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7
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1 /* vi:set ts=8 sts=4 sw=4:
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2 *
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3 * VIM - Vi IMproved by Bram Moolenaar
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4 *
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5 * Do ":help uganda" in Vim to read copying and usage conditions.
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6 * Do ":help credits" in Vim to see a list of people who contributed.
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7 * See README.txt for an overview of the Vim source code.
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8 */
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9
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10 /* for debugging */
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11 /* #define CHECK(c, s) if (c) EMSG(s) */
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12 #define CHECK(c, s)
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13
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14 /*
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15 * memline.c: Contains the functions for appending, deleting and changing the
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625
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16 * text lines. The memfile functions are used to store the information in
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17 * blocks of memory, backed up by a file. The structure of the information is
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18 * a tree. The root of the tree is a pointer block. The leaves of the tree
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19 * are data blocks. In between may be several layers of pointer blocks,
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20 * forming branches.
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7
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21 *
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22 * Three types of blocks are used:
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23 * - Block nr 0 contains information for recovery
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24 * - Pointer blocks contain list of pointers to other blocks.
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25 * - Data blocks contain the actual text.
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26 *
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27 * Block nr 0 contains the block0 structure (see below).
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28 *
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29 * Block nr 1 is the first pointer block. It is the root of the tree.
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30 * Other pointer blocks are branches.
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31 *
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32 * If a line is too big to fit in a single page, the block containing that
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33 * line is made big enough to hold the line. It may span several pages.
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34 * Otherwise all blocks are one page.
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35 *
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36 * A data block that was filled when starting to edit a file and was not
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37 * changed since then, can have a negative block number. This means that it
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38 * has not yet been assigned a place in the file. When recovering, the lines
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39 * in this data block can be read from the original file. When the block is
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40 * changed (lines appended/deleted/changed) or when it is flushed it gets a
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41 * positive number. Use mf_trans_del() to get the new number, before calling
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42 * mf_get().
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43 */
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44
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1668
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45 #if defined(MSDOS) || defined(WIN16) || defined(WIN32) || defined(_WIN64)
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1624
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46 # include "vimio.h" /* for mch_open(), must be before vim.h */
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7
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47 #endif
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48
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49 #include "vim.h"
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50
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51 #ifndef UNIX /* it's in os_unix.h for Unix */
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52 # include <time.h>
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53 #endif
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54
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1030
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55 #if defined(SASC) || defined(__amigaos4__)
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7
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56 # include <proto/dos.h> /* for Open() and Close() */
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57 #endif
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58
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1030
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59 #ifdef HAVE_ERRNO_H
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60 # include <errno.h>
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61 #endif
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62
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7
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63 typedef struct block0 ZERO_BL; /* contents of the first block */
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64 typedef struct pointer_block PTR_BL; /* contents of a pointer block */
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65 typedef struct data_block DATA_BL; /* contents of a data block */
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66 typedef struct pointer_entry PTR_EN; /* block/line-count pair */
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67
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68 #define DATA_ID (('d' << 8) + 'a') /* data block id */
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69 #define PTR_ID (('p' << 8) + 't') /* pointer block id */
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70 #define BLOCK0_ID0 'b' /* block 0 id 0 */
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71 #define BLOCK0_ID1 '0' /* block 0 id 1 */
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72
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73 /*
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74 * pointer to a block, used in a pointer block
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75 */
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76 struct pointer_entry
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77 {
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78 blocknr_T pe_bnum; /* block number */
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79 linenr_T pe_line_count; /* number of lines in this branch */
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80 linenr_T pe_old_lnum; /* lnum for this block (for recovery) */
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81 int pe_page_count; /* number of pages in block pe_bnum */
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82 };
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83
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84 /*
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85 * A pointer block contains a list of branches in the tree.
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86 */
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87 struct pointer_block
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88 {
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89 short_u pb_id; /* ID for pointer block: PTR_ID */
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90 short_u pb_count; /* number of pointer in this block */
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91 short_u pb_count_max; /* maximum value for pb_count */
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92 PTR_EN pb_pointer[1]; /* list of pointers to blocks (actually longer)
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93 * followed by empty space until end of page */
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94 };
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95
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96 /*
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97 * A data block is a leaf in the tree.
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98 *
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99 * The text of the lines is at the end of the block. The text of the first line
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100 * in the block is put at the end, the text of the second line in front of it,
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101 * etc. Thus the order of the lines is the opposite of the line number.
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102 */
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103 struct data_block
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104 {
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105 short_u db_id; /* ID for data block: DATA_ID */
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106 unsigned db_free; /* free space available */
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107 unsigned db_txt_start; /* byte where text starts */
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108 unsigned db_txt_end; /* byte just after data block */
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109 linenr_T db_line_count; /* number of lines in this block */
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110 unsigned db_index[1]; /* index for start of line (actually bigger)
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111 * followed by empty space upto db_txt_start
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112 * followed by the text in the lines until
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113 * end of page */
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114 };
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115
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116 /*
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117 * The low bits of db_index hold the actual index. The topmost bit is
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118 * used for the global command to be able to mark a line.
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119 * This method is not clean, but otherwise there would be at least one extra
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120 * byte used for each line.
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121 * The mark has to be in this place to keep it with the correct line when other
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122 * lines are inserted or deleted.
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123 */
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124 #define DB_MARKED ((unsigned)1 << ((sizeof(unsigned) * 8) - 1))
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125 #define DB_INDEX_MASK (~DB_MARKED)
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126
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127 #define INDEX_SIZE (sizeof(unsigned)) /* size of one db_index entry */
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128 #define HEADER_SIZE (sizeof(DATA_BL) - INDEX_SIZE) /* size of data block header */
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129
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39
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130 #define B0_FNAME_SIZE_ORG 900 /* what it was in older versions */
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131 #define B0_FNAME_SIZE 898
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132 #define B0_UNAME_SIZE 40
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133 #define B0_HNAME_SIZE 40
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7
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134 /*
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135 * Restrict the numbers to 32 bits, otherwise most compilers will complain.
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136 * This won't detect a 64 bit machine that only swaps a byte in the top 32
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137 * bits, but that is crazy anyway.
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138 */
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139 #define B0_MAGIC_LONG 0x30313233L
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140 #define B0_MAGIC_INT 0x20212223L
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141 #define B0_MAGIC_SHORT 0x10111213L
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142 #define B0_MAGIC_CHAR 0x55
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143
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144 /*
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145 * Block zero holds all info about the swap file.
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146 *
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147 * NOTE: DEFINITION OF BLOCK 0 SHOULD NOT CHANGE! It would make all existing
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148 * swap files unusable!
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149 *
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150 * If size of block0 changes anyway, adjust MIN_SWAP_PAGE_SIZE in vim.h!!
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151 *
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1228
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152 * This block is built up of single bytes, to make it portable across
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7
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153 * different machines. b0_magic_* is used to check the byte order and size of
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154 * variables, because the rest of the swap file is not portable.
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155 */
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156 struct block0
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157 {
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158 char_u b0_id[2]; /* id for block 0: BLOCK0_ID0 and BLOCK0_ID1 */
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159 char_u b0_version[10]; /* Vim version string */
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160 char_u b0_page_size[4];/* number of bytes per page */
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161 char_u b0_mtime[4]; /* last modification time of file */
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162 char_u b0_ino[4]; /* inode of b0_fname */
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163 char_u b0_pid[4]; /* process id of creator (or 0) */
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164 char_u b0_uname[B0_UNAME_SIZE]; /* name of user (uid if no name) */
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165 char_u b0_hname[B0_HNAME_SIZE]; /* host name (if it has a name) */
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39
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166 char_u b0_fname[B0_FNAME_SIZE_ORG]; /* name of file being edited */
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7
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167 long b0_magic_long; /* check for byte order of long */
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168 int b0_magic_int; /* check for byte order of int */
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169 short b0_magic_short; /* check for byte order of short */
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170 char_u b0_magic_char; /* check for last char */
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171 };
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39
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172
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173 /*
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625
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174 * Note: b0_dirty and b0_flags are put at the end of the file name. For very
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39
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175 * long file names in older versions of Vim they are invalid.
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176 * The 'fileencoding' comes before b0_flags, with a NUL in front. But only
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177 * when there is room, for very long file names it's omitted.
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178 */
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179 #define B0_DIRTY 0x55
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180 #define b0_dirty b0_fname[B0_FNAME_SIZE_ORG-1]
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181
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182 /*
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183 * The b0_flags field is new in Vim 7.0.
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184 */
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185 #define b0_flags b0_fname[B0_FNAME_SIZE_ORG-2]
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186
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187 /* The lowest two bits contain the fileformat. Zero means it's not set
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188 * (compatible with Vim 6.x), otherwise it's EOL_UNIX + 1, EOL_DOS + 1 or
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189 * EOL_MAC + 1. */
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190 #define B0_FF_MASK 3
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191
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192 /* Swap file is in directory of edited file. Used to find the file from
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193 * different mount points. */
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194 #define B0_SAME_DIR 4
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195
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196 /* The 'fileencoding' is at the end of b0_fname[], with a NUL in front of it.
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197 * When empty there is only the NUL. */
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198 #define B0_HAS_FENC 8
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7
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199
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200 #define STACK_INCR 5 /* nr of entries added to ml_stack at a time */
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201
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202 /*
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203 * The line number where the first mark may be is remembered.
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204 * If it is 0 there are no marks at all.
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205 * (always used for the current buffer only, no buffer change possible while
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206 * executing a global command).
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207 */
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208 static linenr_T lowest_marked = 0;
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209
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210 /*
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211 * arguments for ml_find_line()
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212 */
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213 #define ML_DELETE 0x11 /* delete line */
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214 #define ML_INSERT 0x12 /* insert line */
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215 #define ML_FIND 0x13 /* just find the line */
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216 #define ML_FLUSH 0x02 /* flush locked block */
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217 #define ML_SIMPLE(x) (x & 0x10) /* DEL, INS or FIND */
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218
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944
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219 static void ml_upd_block0 __ARGS((buf_T *buf, int set_fname));
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7
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220 static void set_b0_fname __ARGS((ZERO_BL *, buf_T *buf));
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39
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221 static void set_b0_dir_flag __ARGS((ZERO_BL *b0p, buf_T *buf));
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222 #ifdef FEAT_MBYTE
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223 static void add_b0_fenc __ARGS((ZERO_BL *b0p, buf_T *buf));
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224 #endif
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7
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225 static time_t swapfile_info __ARGS((char_u *));
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226 static int recov_file_names __ARGS((char_u **, char_u *, int prepend_dot));
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227 static int ml_append_int __ARGS((buf_T *, linenr_T, char_u *, colnr_T, int, int));
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228 static int ml_delete_int __ARGS((buf_T *, linenr_T, int));
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229 static char_u *findswapname __ARGS((buf_T *, char_u **, char_u *));
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230 static void ml_flush_line __ARGS((buf_T *));
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231 static bhdr_T *ml_new_data __ARGS((memfile_T *, int, int));
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232 static bhdr_T *ml_new_ptr __ARGS((memfile_T *));
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233 static bhdr_T *ml_find_line __ARGS((buf_T *, linenr_T, int));
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234 static int ml_add_stack __ARGS((buf_T *));
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235 static void ml_lineadd __ARGS((buf_T *, int));
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236 static int b0_magic_wrong __ARGS((ZERO_BL *));
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237 #ifdef CHECK_INODE
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238 static int fnamecmp_ino __ARGS((char_u *, char_u *, long));
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239 #endif
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240 static void long_to_char __ARGS((long, char_u *));
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241 static long char_to_long __ARGS((char_u *));
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242 #if defined(UNIX) || defined(WIN3264)
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243 static char_u *make_percent_swname __ARGS((char_u *dir, char_u *name));
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244 #endif
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245 #ifdef FEAT_BYTEOFF
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246 static void ml_updatechunk __ARGS((buf_T *buf, long line, long len, int updtype));
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247 #endif
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248
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249 /*
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625
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250 * Open a new memline for "buf".
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7
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251 *
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625
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252 * Return FAIL for failure, OK otherwise.
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7
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253 */
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254 int
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625
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255 ml_open(buf)
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256 buf_T *buf;
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7
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257 {
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258 memfile_T *mfp;
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259 bhdr_T *hp = NULL;
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260 ZERO_BL *b0p;
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261 PTR_BL *pp;
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262 DATA_BL *dp;
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263
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625
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264 /*
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265 * init fields in memline struct
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266 */
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267 buf->b_ml.ml_stack_size = 0; /* no stack yet */
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268 buf->b_ml.ml_stack = NULL; /* no stack yet */
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269 buf->b_ml.ml_stack_top = 0; /* nothing in the stack */
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270 buf->b_ml.ml_locked = NULL; /* no cached block */
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271 buf->b_ml.ml_line_lnum = 0; /* no cached line */
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7
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272 #ifdef FEAT_BYTEOFF
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625
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273 buf->b_ml.ml_chunksize = NULL;
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7
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274 #endif
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275
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625
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276 /*
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277 * When 'updatecount' is non-zero swap file may be opened later.
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278 */
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279 if (p_uc && buf->b_p_swf)
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280 buf->b_may_swap = TRUE;
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7
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281 else
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625
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282 buf->b_may_swap = FALSE;
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283
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284 /*
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285 * Open the memfile. No swap file is created yet.
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286 */
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7
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287 mfp = mf_open(NULL, 0);
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288 if (mfp == NULL)
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289 goto error;
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290
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625
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291 buf->b_ml.ml_mfp = mfp;
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292 buf->b_ml.ml_flags = ML_EMPTY;
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293 buf->b_ml.ml_line_count = 1;
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13
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294 #ifdef FEAT_LINEBREAK
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295 curwin->w_nrwidth_line_count = 0;
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296 #endif
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7
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297
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298 #if defined(MSDOS) && !defined(DJGPP)
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299 /* for 16 bit MS-DOS create a swapfile now, because we run out of
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300 * memory very quickly */
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301 if (p_uc != 0)
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625
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302 ml_open_file(buf);
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7
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303 #endif
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304
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305 /*
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306 * fill block0 struct and write page 0
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307 */
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308 if ((hp = mf_new(mfp, FALSE, 1)) == NULL)
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309 goto error;
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310 if (hp->bh_bnum != 0)
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311 {
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312 EMSG(_("E298: Didn't get block nr 0?"));
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313 goto error;
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314 }
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315 b0p = (ZERO_BL *)(hp->bh_data);
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316
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317 b0p->b0_id[0] = BLOCK0_ID0;
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318 b0p->b0_id[1] = BLOCK0_ID1;
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319 b0p->b0_magic_long = (long)B0_MAGIC_LONG;
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320 b0p->b0_magic_int = (int)B0_MAGIC_INT;
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321 b0p->b0_magic_short = (short)B0_MAGIC_SHORT;
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322 b0p->b0_magic_char = B0_MAGIC_CHAR;
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323 STRNCPY(b0p->b0_version, "VIM ", 4);
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324 STRNCPY(b0p->b0_version + 4, Version, 6);
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325 long_to_char((long)mfp->mf_page_size, b0p->b0_page_size);
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625
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326
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800
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327 #ifdef FEAT_SPELL
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328 if (!buf->b_spell)
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329 #endif
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625
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330 {
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331 b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0;
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332 b0p->b0_flags = get_fileformat(buf) + 1;
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333 set_b0_fname(b0p, buf);
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334 (void)get_user_name(b0p->b0_uname, B0_UNAME_SIZE);
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335 b0p->b0_uname[B0_UNAME_SIZE - 1] = NUL;
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336 mch_get_host_name(b0p->b0_hname, B0_HNAME_SIZE);
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337 b0p->b0_hname[B0_HNAME_SIZE - 1] = NUL;
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338 long_to_char(mch_get_pid(), b0p->b0_pid);
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339 }
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7
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340
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341 /*
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342 * Always sync block number 0 to disk, so we can check the file name in
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625
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343 * the swap file in findswapname(). Don't do this for help files though
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344 * and spell buffer though.
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7
|
345 * Only works when there's a swapfile, otherwise it's done when the file
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346 * is created.
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347 */
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348 mf_put(mfp, hp, TRUE, FALSE);
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625
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349 if (!buf->b_help && !B_SPELL(buf))
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7
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350 (void)mf_sync(mfp, 0);
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351
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625
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352 /*
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353 * Fill in root pointer block and write page 1.
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|
354 */
|
|
7
|
355 if ((hp = ml_new_ptr(mfp)) == NULL)
|
|
|
356 goto error;
|
|
|
357 if (hp->bh_bnum != 1)
|
|
|
358 {
|
|
|
359 EMSG(_("E298: Didn't get block nr 1?"));
|
|
|
360 goto error;
|
|
|
361 }
|
|
|
362 pp = (PTR_BL *)(hp->bh_data);
|
|
|
363 pp->pb_count = 1;
|
|
|
364 pp->pb_pointer[0].pe_bnum = 2;
|
|
|
365 pp->pb_pointer[0].pe_page_count = 1;
|
|
|
366 pp->pb_pointer[0].pe_old_lnum = 1;
|
|
|
367 pp->pb_pointer[0].pe_line_count = 1; /* line count after insertion */
|
|
|
368 mf_put(mfp, hp, TRUE, FALSE);
|
|
|
369
|
|
625
|
370 /*
|
|
|
371 * Allocate first data block and create an empty line 1.
|
|
|
372 */
|
|
7
|
373 if ((hp = ml_new_data(mfp, FALSE, 1)) == NULL)
|
|
|
374 goto error;
|
|
|
375 if (hp->bh_bnum != 2)
|
|
|
376 {
|
|
|
377 EMSG(_("E298: Didn't get block nr 2?"));
|
|
|
378 goto error;
|
|
|
379 }
|
|
|
380
|
|
|
381 dp = (DATA_BL *)(hp->bh_data);
|
|
|
382 dp->db_index[0] = --dp->db_txt_start; /* at end of block */
|
|
|
383 dp->db_free -= 1 + INDEX_SIZE;
|
|
|
384 dp->db_line_count = 1;
|
|
|
385 *((char_u *)dp + dp->db_txt_start) = NUL; /* emtpy line */
|
|
|
386
|
|
|
387 return OK;
|
|
|
388
|
|
|
389 error:
|
|
|
390 if (mfp != NULL)
|
|
|
391 {
|
|
|
392 if (hp)
|
|
|
393 mf_put(mfp, hp, FALSE, FALSE);
|
|
|
394 mf_close(mfp, TRUE); /* will also free(mfp->mf_fname) */
|
|
|
395 }
|
|
625
|
396 buf->b_ml.ml_mfp = NULL;
|
|
7
|
397 return FAIL;
|
|
|
398 }
|
|
|
399
|
|
|
400 /*
|
|
|
401 * ml_setname() is called when the file name of "buf" has been changed.
|
|
|
402 * It may rename the swap file.
|
|
|
403 */
|
|
|
404 void
|
|
|
405 ml_setname(buf)
|
|
|
406 buf_T *buf;
|
|
|
407 {
|
|
|
408 int success = FALSE;
|
|
|
409 memfile_T *mfp;
|
|
|
410 char_u *fname;
|
|
|
411 char_u *dirp;
|
|
|
412 #if defined(MSDOS) || defined(MSWIN)
|
|
|
413 char_u *p;
|
|
|
414 #endif
|
|
|
415
|
|
|
416 mfp = buf->b_ml.ml_mfp;
|
|
|
417 if (mfp->mf_fd < 0) /* there is no swap file yet */
|
|
|
418 {
|
|
|
419 /*
|
|
|
420 * When 'updatecount' is 0 and 'noswapfile' there is no swap file.
|
|
|
421 * For help files we will make a swap file now.
|
|
|
422 */
|
|
|
423 if (p_uc != 0)
|
|
|
424 ml_open_file(buf); /* create a swap file */
|
|
|
425 return;
|
|
|
426 }
|
|
|
427
|
|
|
428 /*
|
|
|
429 * Try all directories in the 'directory' option.
|
|
|
430 */
|
|
|
431 dirp = p_dir;
|
|
|
432 for (;;)
|
|
|
433 {
|
|
|
434 if (*dirp == NUL) /* tried all directories, fail */
|
|
|
435 break;
|
|
43
|
436 fname = findswapname(buf, &dirp, mfp->mf_fname);
|
|
|
437 /* alloc's fname */
|
|
7
|
438 if (fname == NULL) /* no file name found for this dir */
|
|
|
439 continue;
|
|
|
440
|
|
|
441 #if defined(MSDOS) || defined(MSWIN)
|
|
|
442 /*
|
|
|
443 * Set full pathname for swap file now, because a ":!cd dir" may
|
|
|
444 * change directory without us knowing it.
|
|
|
445 */
|
|
|
446 p = FullName_save(fname, FALSE);
|
|
|
447 vim_free(fname);
|
|
|
448 fname = p;
|
|
|
449 if (fname == NULL)
|
|
|
450 continue;
|
|
|
451 #endif
|
|
|
452 /* if the file name is the same we don't have to do anything */
|
|
|
453 if (fnamecmp(fname, mfp->mf_fname) == 0)
|
|
|
454 {
|
|
|
455 vim_free(fname);
|
|
|
456 success = TRUE;
|
|
|
457 break;
|
|
|
458 }
|
|
|
459 /* need to close the swap file before renaming */
|
|
|
460 if (mfp->mf_fd >= 0)
|
|
|
461 {
|
|
|
462 close(mfp->mf_fd);
|
|
|
463 mfp->mf_fd = -1;
|
|
|
464 }
|
|
|
465
|
|
|
466 /* try to rename the swap file */
|
|
|
467 if (vim_rename(mfp->mf_fname, fname) == 0)
|
|
|
468 {
|
|
|
469 success = TRUE;
|
|
|
470 vim_free(mfp->mf_fname);
|
|
|
471 mfp->mf_fname = fname;
|
|
|
472 vim_free(mfp->mf_ffname);
|
|
|
473 #if defined(MSDOS) || defined(MSWIN)
|
|
|
474 mfp->mf_ffname = NULL; /* mf_fname is full pathname already */
|
|
|
475 #else
|
|
|
476 mf_set_ffname(mfp);
|
|
|
477 #endif
|
|
39
|
478 ml_upd_block0(buf, FALSE);
|
|
7
|
479 break;
|
|
|
480 }
|
|
|
481 vim_free(fname); /* this fname didn't work, try another */
|
|
|
482 }
|
|
|
483
|
|
|
484 if (mfp->mf_fd == -1) /* need to (re)open the swap file */
|
|
|
485 {
|
|
|
486 mfp->mf_fd = mch_open((char *)mfp->mf_fname, O_RDWR | O_EXTRA, 0);
|
|
|
487 if (mfp->mf_fd < 0)
|
|
|
488 {
|
|
|
489 /* could not (re)open the swap file, what can we do???? */
|
|
|
490 EMSG(_("E301: Oops, lost the swap file!!!"));
|
|
|
491 return;
|
|
|
492 }
|
|
|
493 }
|
|
|
494 if (!success)
|
|
|
495 EMSG(_("E302: Could not rename swap file"));
|
|
|
496 }
|
|
|
497
|
|
|
498 /*
|
|
|
499 * Open a file for the memfile for all buffers that are not readonly or have
|
|
|
500 * been modified.
|
|
|
501 * Used when 'updatecount' changes from zero to non-zero.
|
|
|
502 */
|
|
|
503 void
|
|
|
504 ml_open_files()
|
|
|
505 {
|
|
|
506 buf_T *buf;
|
|
|
507
|
|
|
508 for (buf = firstbuf; buf != NULL; buf = buf->b_next)
|
|
|
509 if (!buf->b_p_ro || buf->b_changed)
|
|
|
510 ml_open_file(buf);
|
|
|
511 }
|
|
|
512
|
|
|
513 /*
|
|
|
514 * Open a swap file for an existing memfile, if there is no swap file yet.
|
|
|
515 * If we are unable to find a file name, mf_fname will be NULL
|
|
|
516 * and the memfile will be in memory only (no recovery possible).
|
|
|
517 */
|
|
|
518 void
|
|
|
519 ml_open_file(buf)
|
|
|
520 buf_T *buf;
|
|
|
521 {
|
|
|
522 memfile_T *mfp;
|
|
|
523 char_u *fname;
|
|
|
524 char_u *dirp;
|
|
|
525
|
|
|
526 mfp = buf->b_ml.ml_mfp;
|
|
|
527 if (mfp == NULL || mfp->mf_fd >= 0 || !buf->b_p_swf)
|
|
|
528 return; /* nothing to do */
|
|
|
529
|
|
748
|
530 #ifdef FEAT_SPELL
|
|
625
|
531 /* For a spell buffer use a temp file name. */
|
|
|
532 if (buf->b_spell)
|
|
|
533 {
|
|
|
534 fname = vim_tempname('s');
|
|
|
535 if (fname != NULL)
|
|
|
536 (void)mf_open_file(mfp, fname); /* consumes fname! */
|
|
|
537 buf->b_may_swap = FALSE;
|
|
|
538 return;
|
|
|
539 }
|
|
|
540 #endif
|
|
|
541
|
|
7
|
542 /*
|
|
|
543 * Try all directories in 'directory' option.
|
|
|
544 */
|
|
|
545 dirp = p_dir;
|
|
|
546 for (;;)
|
|
|
547 {
|
|
|
548 if (*dirp == NUL)
|
|
|
549 break;
|
|
|
550 /* There is a small chance that between chosing the swap file name and
|
|
|
551 * creating it, another Vim creates the file. In that case the
|
|
|
552 * creation will fail and we will use another directory. */
|
|
43
|
553 fname = findswapname(buf, &dirp, NULL); /* allocates fname */
|
|
7
|
554 if (fname == NULL)
|
|
|
555 continue;
|
|
|
556 if (mf_open_file(mfp, fname) == OK) /* consumes fname! */
|
|
|
557 {
|
|
|
558 #if defined(MSDOS) || defined(MSWIN) || defined(RISCOS)
|
|
|
559 /*
|
|
|
560 * set full pathname for swap file now, because a ":!cd dir" may
|
|
|
561 * change directory without us knowing it.
|
|
|
562 */
|
|
|
563 mf_fullname(mfp);
|
|
|
564 #endif
|
|
39
|
565 ml_upd_block0(buf, FALSE);
|
|
|
566
|
|
7
|
567 /* Flush block zero, so others can read it */
|
|
|
568 if (mf_sync(mfp, MFS_ZERO) == OK)
|
|
630
|
569 {
|
|
|
570 /* Mark all blocks that should be in the swapfile as dirty.
|
|
|
571 * Needed for when the 'swapfile' option was reset, so that
|
|
|
572 * the swap file was deleted, and then on again. */
|
|
|
573 mf_set_dirty(mfp);
|
|
7
|
574 break;
|
|
630
|
575 }
|
|
7
|
576 /* Writing block 0 failed: close the file and try another dir */
|
|
|
577 mf_close_file(buf, FALSE);
|
|
|
578 }
|
|
|
579 }
|
|
|
580
|
|
|
581 if (mfp->mf_fname == NULL) /* Failed! */
|
|
|
582 {
|
|
|
583 need_wait_return = TRUE; /* call wait_return later */
|
|
|
584 ++no_wait_return;
|
|
|
585 (void)EMSG2(_("E303: Unable to open swap file for \"%s\", recovery impossible"),
|
|
|
586 buf_spname(buf) != NULL
|
|
|
587 ? (char_u *)buf_spname(buf)
|
|
|
588 : buf->b_fname);
|
|
|
589 --no_wait_return;
|
|
|
590 }
|
|
|
591
|
|
|
592 /* don't try to open a swap file again */
|
|
|
593 buf->b_may_swap = FALSE;
|
|
|
594 }
|
|
|
595
|
|
|
596 /*
|
|
|
597 * If still need to create a swap file, and starting to edit a not-readonly
|
|
|
598 * file, or reading into an existing buffer, create a swap file now.
|
|
|
599 */
|
|
|
600 void
|
|
|
601 check_need_swap(newfile)
|
|
|
602 int newfile; /* reading file into new buffer */
|
|
|
603 {
|
|
|
604 if (curbuf->b_may_swap && (!curbuf->b_p_ro || !newfile))
|
|
|
605 ml_open_file(curbuf);
|
|
|
606 }
|
|
|
607
|
|
|
608 /*
|
|
|
609 * Close memline for buffer 'buf'.
|
|
|
610 * If 'del_file' is TRUE, delete the swap file
|
|
|
611 */
|
|
|
612 void
|
|
|
613 ml_close(buf, del_file)
|
|
|
614 buf_T *buf;
|
|
|
615 int del_file;
|
|
|
616 {
|
|
|
617 if (buf->b_ml.ml_mfp == NULL) /* not open */
|
|
|
618 return;
|
|
|
619 mf_close(buf->b_ml.ml_mfp, del_file); /* close the .swp file */
|
|
|
620 if (buf->b_ml.ml_line_lnum != 0 && (buf->b_ml.ml_flags & ML_LINE_DIRTY))
|
|
|
621 vim_free(buf->b_ml.ml_line_ptr);
|
|
|
622 vim_free(buf->b_ml.ml_stack);
|
|
|
623 #ifdef FEAT_BYTEOFF
|
|
|
624 vim_free(buf->b_ml.ml_chunksize);
|
|
|
625 buf->b_ml.ml_chunksize = NULL;
|
|
|
626 #endif
|
|
|
627 buf->b_ml.ml_mfp = NULL;
|
|
|
628
|
|
|
629 /* Reset the "recovered" flag, give the ATTENTION prompt the next time
|
|
|
630 * this buffer is loaded. */
|
|
|
631 buf->b_flags &= ~BF_RECOVERED;
|
|
|
632 }
|
|
|
633
|
|
|
634 /*
|
|
|
635 * Close all existing memlines and memfiles.
|
|
|
636 * Only used when exiting.
|
|
|
637 * When 'del_file' is TRUE, delete the memfiles.
|
|
165
|
638 * But don't delete files that were ":preserve"d when we are POSIX compatible.
|
|
7
|
639 */
|
|
|
640 void
|
|
|
641 ml_close_all(del_file)
|
|
|
642 int del_file;
|
|
|
643 {
|
|
|
644 buf_T *buf;
|
|
|
645
|
|
|
646 for (buf = firstbuf; buf != NULL; buf = buf->b_next)
|
|
165
|
647 ml_close(buf, del_file && ((buf->b_flags & BF_PRESERVED) == 0
|
|
|
648 || vim_strchr(p_cpo, CPO_PRESERVE) == NULL));
|
|
7
|
649 #ifdef TEMPDIRNAMES
|
|
|
650 vim_deltempdir(); /* delete created temp directory */
|
|
|
651 #endif
|
|
|
652 }
|
|
|
653
|
|
|
654 /*
|
|
|
655 * Close all memfiles for not modified buffers.
|
|
|
656 * Only use just before exiting!
|
|
|
657 */
|
|
|
658 void
|
|
|
659 ml_close_notmod()
|
|
|
660 {
|
|
|
661 buf_T *buf;
|
|
|
662
|
|
|
663 for (buf = firstbuf; buf != NULL; buf = buf->b_next)
|
|
|
664 if (!bufIsChanged(buf))
|
|
|
665 ml_close(buf, TRUE); /* close all not-modified buffers */
|
|
|
666 }
|
|
|
667
|
|
|
668 /*
|
|
|
669 * Update the timestamp in the .swp file.
|
|
|
670 * Used when the file has been written.
|
|
|
671 */
|
|
|
672 void
|
|
|
673 ml_timestamp(buf)
|
|
|
674 buf_T *buf;
|
|
|
675 {
|
|
39
|
676 ml_upd_block0(buf, TRUE);
|
|
|
677 }
|
|
|
678
|
|
|
679 /*
|
|
|
680 * Update the timestamp or the B0_SAME_DIR flag of the .swp file.
|
|
|
681 */
|
|
|
682 static void
|
|
944
|
683 ml_upd_block0(buf, set_fname)
|
|
39
|
684 buf_T *buf;
|
|
944
|
685 int set_fname;
|
|
39
|
686 {
|
|
7
|
687 memfile_T *mfp;
|
|
|
688 bhdr_T *hp;
|
|
|
689 ZERO_BL *b0p;
|
|
|
690
|
|
|
691 mfp = buf->b_ml.ml_mfp;
|
|
|
692 if (mfp == NULL || (hp = mf_get(mfp, (blocknr_T)0, 1)) == NULL)
|
|
|
693 return;
|
|
|
694 b0p = (ZERO_BL *)(hp->bh_data);
|
|
|
695 if (b0p->b0_id[0] != BLOCK0_ID0 || b0p->b0_id[1] != BLOCK0_ID1)
|
|
39
|
696 EMSG(_("E304: ml_upd_block0(): Didn't get block 0??"));
|
|
7
|
697 else
|
|
39
|
698 {
|
|
944
|
699 if (set_fname)
|
|
39
|
700 set_b0_fname(b0p, buf);
|
|
|
701 else
|
|
|
702 set_b0_dir_flag(b0p, buf);
|
|
|
703 }
|
|
7
|
704 mf_put(mfp, hp, TRUE, FALSE);
|
|
|
705 }
|
|
|
706
|
|
|
707 /*
|
|
|
708 * Write file name and timestamp into block 0 of a swap file.
|
|
|
709 * Also set buf->b_mtime.
|
|
|
710 * Don't use NameBuff[]!!!
|
|
|
711 */
|
|
|
712 static void
|
|
|
713 set_b0_fname(b0p, buf)
|
|
|
714 ZERO_BL *b0p;
|
|
|
715 buf_T *buf;
|
|
|
716 {
|
|
|
717 struct stat st;
|
|
|
718
|
|
|
719 if (buf->b_ffname == NULL)
|
|
|
720 b0p->b0_fname[0] = NUL;
|
|
|
721 else
|
|
|
722 {
|
|
|
723 #if defined(MSDOS) || defined(MSWIN) || defined(AMIGA) || defined(RISCOS)
|
|
39
|
724 /* Systems that cannot translate "~user" back into a path: copy the
|
|
|
725 * file name unmodified. Do use slashes instead of backslashes for
|
|
|
726 * portability. */
|
|
419
|
727 vim_strncpy(b0p->b0_fname, buf->b_ffname, B0_FNAME_SIZE - 1);
|
|
39
|
728 # ifdef BACKSLASH_IN_FILENAME
|
|
|
729 forward_slash(b0p->b0_fname);
|
|
|
730 # endif
|
|
7
|
731 #else
|
|
|
732 size_t flen, ulen;
|
|
|
733 char_u uname[B0_UNAME_SIZE];
|
|
|
734
|
|
|
735 /*
|
|
|
736 * For a file under the home directory of the current user, we try to
|
|
|
737 * replace the home directory path with "~user". This helps when
|
|
|
738 * editing the same file on different machines over a network.
|
|
|
739 * First replace home dir path with "~/" with home_replace().
|
|
|
740 * Then insert the user name to get "~user/".
|
|
|
741 */
|
|
|
742 home_replace(NULL, buf->b_ffname, b0p->b0_fname, B0_FNAME_SIZE, TRUE);
|
|
|
743 if (b0p->b0_fname[0] == '~')
|
|
|
744 {
|
|
|
745 flen = STRLEN(b0p->b0_fname);
|
|
|
746 /* If there is no user name or it is too long, don't use "~/" */
|
|
|
747 if (get_user_name(uname, B0_UNAME_SIZE) == FAIL
|
|
|
748 || (ulen = STRLEN(uname)) + flen > B0_FNAME_SIZE - 1)
|
|
419
|
749 vim_strncpy(b0p->b0_fname, buf->b_ffname, B0_FNAME_SIZE - 1);
|
|
7
|
750 else
|
|
|
751 {
|
|
|
752 mch_memmove(b0p->b0_fname + ulen + 1, b0p->b0_fname + 1, flen);
|
|
|
753 mch_memmove(b0p->b0_fname + 1, uname, ulen);
|
|
|
754 }
|
|
|
755 }
|
|
|
756 #endif
|
|
|
757 if (mch_stat((char *)buf->b_ffname, &st) >= 0)
|
|
|
758 {
|
|
|
759 long_to_char((long)st.st_mtime, b0p->b0_mtime);
|
|
|
760 #ifdef CHECK_INODE
|
|
|
761 long_to_char((long)st.st_ino, b0p->b0_ino);
|
|
|
762 #endif
|
|
|
763 buf_store_time(buf, &st, buf->b_ffname);
|
|
|
764 buf->b_mtime_read = buf->b_mtime;
|
|
|
765 }
|
|
|
766 else
|
|
|
767 {
|
|
|
768 long_to_char(0L, b0p->b0_mtime);
|
|
|
769 #ifdef CHECK_INODE
|
|
|
770 long_to_char(0L, b0p->b0_ino);
|
|
|
771 #endif
|
|
|
772 buf->b_mtime = 0;
|
|
|
773 buf->b_mtime_read = 0;
|
|
|
774 buf->b_orig_size = 0;
|
|
|
775 buf->b_orig_mode = 0;
|
|
|
776 }
|
|
|
777 }
|
|
39
|
778
|
|
|
779 #ifdef FEAT_MBYTE
|
|
|
780 /* Also add the 'fileencoding' if there is room. */
|
|
|
781 add_b0_fenc(b0p, curbuf);
|
|
|
782 #endif
|
|
7
|
783 }
|
|
|
784
|
|
|
785 /*
|
|
39
|
786 * Update the B0_SAME_DIR flag of the swap file. It's set if the file and the
|
|
|
787 * swapfile for "buf" are in the same directory.
|
|
|
788 * This is fail safe: if we are not sure the directories are equal the flag is
|
|
|
789 * not set.
|
|
|
790 */
|
|
|
791 static void
|
|
|
792 set_b0_dir_flag(b0p, buf)
|
|
|
793 ZERO_BL *b0p;
|
|
|
794 buf_T *buf;
|
|
|
795 {
|
|
|
796 if (same_directory(buf->b_ml.ml_mfp->mf_fname, buf->b_ffname))
|
|
|
797 b0p->b0_flags |= B0_SAME_DIR;
|
|
|
798 else
|
|
|
799 b0p->b0_flags &= ~B0_SAME_DIR;
|
|
|
800 }
|
|
|
801
|
|
|
802 #ifdef FEAT_MBYTE
|
|
|
803 /*
|
|
|
804 * When there is room, add the 'fileencoding' to block zero.
|
|
|
805 */
|
|
|
806 static void
|
|
|
807 add_b0_fenc(b0p, buf)
|
|
|
808 ZERO_BL *b0p;
|
|
|
809 buf_T *buf;
|
|
|
810 {
|
|
|
811 int n;
|
|
|
812
|
|
835
|
813 n = (int)STRLEN(buf->b_p_fenc);
|
|
39
|
814 if (STRLEN(b0p->b0_fname) + n + 1 > B0_FNAME_SIZE)
|
|
|
815 b0p->b0_flags &= ~B0_HAS_FENC;
|
|
|
816 else
|
|
|
817 {
|
|
|
818 mch_memmove((char *)b0p->b0_fname + B0_FNAME_SIZE - n,
|
|
|
819 (char *)buf->b_p_fenc, (size_t)n);
|
|
|
820 *(b0p->b0_fname + B0_FNAME_SIZE - n - 1) = NUL;
|
|
|
821 b0p->b0_flags |= B0_HAS_FENC;
|
|
|
822 }
|
|
|
823 }
|
|
|
824 #endif
|
|
|
825
|
|
|
826
|
|
|
827 /*
|
|
7
|
828 * try to recover curbuf from the .swp file
|
|
|
829 */
|
|
|
830 void
|
|
|
831 ml_recover()
|
|
|
832 {
|
|
|
833 buf_T *buf = NULL;
|
|
|
834 memfile_T *mfp = NULL;
|
|
|
835 char_u *fname;
|
|
|
836 bhdr_T *hp = NULL;
|
|
|
837 ZERO_BL *b0p;
|
|
39
|
838 int b0_ff;
|
|
|
839 char_u *b0_fenc = NULL;
|
|
7
|
840 PTR_BL *pp;
|
|
|
841 DATA_BL *dp;
|
|
|
842 infoptr_T *ip;
|
|
|
843 blocknr_T bnum;
|
|
|
844 int page_count;
|
|
|
845 struct stat org_stat, swp_stat;
|
|
|
846 int len;
|
|
|
847 int directly;
|
|
|
848 linenr_T lnum;
|
|
|
849 char_u *p;
|
|
|
850 int i;
|
|
|
851 long error;
|
|
|
852 int cannot_open;
|
|
|
853 linenr_T line_count;
|
|
|
854 int has_error;
|
|
|
855 int idx;
|
|
|
856 int top;
|
|
|
857 int txt_start;
|
|
|
858 off_t size;
|
|
|
859 int called_from_main;
|
|
|
860 int serious_error = TRUE;
|
|
|
861 long mtime;
|
|
|
862 int attr;
|
|
|
863
|
|
|
864 recoverymode = TRUE;
|
|
|
865 called_from_main = (curbuf->b_ml.ml_mfp == NULL);
|
|
|
866 attr = hl_attr(HLF_E);
|
|
|
867 /*
|
|
|
868 * If the file name ends in ".sw?" we use it directly.
|
|
|
869 * Otherwise a search is done to find the swap file(s).
|
|
|
870 */
|
|
|
871 fname = curbuf->b_fname;
|
|
|
872 if (fname == NULL) /* When there is no file name */
|
|
|
873 fname = (char_u *)"";
|
|
|
874 len = (int)STRLEN(fname);
|
|
|
875 if (len >= 4 &&
|
|
|
876 #if defined(VMS) || defined(RISCOS)
|
|
|
877 STRNICMP(fname + len - 4, "_sw" , 3)
|
|
|
878 #else
|
|
|
879 STRNICMP(fname + len - 4, ".sw" , 3)
|
|
|
880 #endif
|
|
|
881 == 0)
|
|
|
882 {
|
|
|
883 directly = TRUE;
|
|
|
884 fname = vim_strsave(fname); /* make a copy for mf_open() */
|
|
|
885 }
|
|
|
886 else
|
|
|
887 {
|
|
|
888 directly = FALSE;
|
|
|
889
|
|
|
890 /* count the number of matching swap files */
|
|
|
891 len = recover_names(&fname, FALSE, 0);
|
|
|
892 if (len == 0) /* no swap files found */
|
|
|
893 {
|
|
|
894 EMSG2(_("E305: No swap file found for %s"), fname);
|
|
|
895 goto theend;
|
|
|
896 }
|
|
|
897 if (len == 1) /* one swap file found, use it */
|
|
|
898 i = 1;
|
|
|
899 else /* several swap files found, choose */
|
|
|
900 {
|
|
|
901 /* list the names of the swap files */
|
|
|
902 (void)recover_names(&fname, TRUE, 0);
|
|
|
903 msg_putchar('\n');
|
|
|
904 MSG_PUTS(_("Enter number of swap file to use (0 to quit): "));
|
|
374
|
905 i = get_number(FALSE, NULL);
|
|
7
|
906 if (i < 1 || i > len)
|
|
|
907 goto theend;
|
|
|
908 }
|
|
|
909 /* get the swap file name that will be used */
|
|
|
910 (void)recover_names(&fname, FALSE, i);
|
|
|
911 }
|
|
|
912 if (fname == NULL)
|
|
|
913 goto theend; /* out of memory */
|
|
|
914
|
|
|
915 /* When called from main() still need to initialize storage structure */
|
|
625
|
916 if (called_from_main && ml_open(curbuf) == FAIL)
|
|
7
|
917 getout(1);
|
|
|
918
|
|
|
919 /*
|
|
|
920 * allocate a buffer structure (only the memline in it is really used)
|
|
|
921 */
|
|
|
922 buf = (buf_T *)alloc((unsigned)sizeof(buf_T));
|
|
|
923 if (buf == NULL)
|
|
|
924 {
|
|
|
925 vim_free(fname);
|
|
|
926 goto theend;
|
|
|
927 }
|
|
|
928
|
|
|
929 /*
|
|
|
930 * init fields in memline struct
|
|
|
931 */
|
|
|
932 buf->b_ml.ml_stack_size = 0; /* no stack yet */
|
|
|
933 buf->b_ml.ml_stack = NULL; /* no stack yet */
|
|
|
934 buf->b_ml.ml_stack_top = 0; /* nothing in the stack */
|
|
|
935 buf->b_ml.ml_line_lnum = 0; /* no cached line */
|
|
|
936 buf->b_ml.ml_locked = NULL; /* no locked block */
|
|
|
937 buf->b_ml.ml_flags = 0;
|
|
|
938
|
|
|
939 /*
|
|
|
940 * open the memfile from the old swap file
|
|
|
941 */
|
|
|
942 p = vim_strsave(fname); /* save fname for the message
|
|
|
943 (mf_open() may free fname) */
|
|
|
944 mfp = mf_open(fname, O_RDONLY); /* consumes fname! */
|
|
|
945 if (mfp == NULL || mfp->mf_fd < 0)
|
|
|
946 {
|
|
|
947 if (p != NULL)
|
|
|
948 {
|
|
|
949 EMSG2(_("E306: Cannot open %s"), p);
|
|
|
950 vim_free(p);
|
|
|
951 }
|
|
|
952 goto theend;
|
|
|
953 }
|
|
|
954 vim_free(p);
|
|
|
955 buf->b_ml.ml_mfp = mfp;
|
|
|
956
|
|
|
957 /*
|
|
|
958 * The page size set in mf_open() might be different from the page size
|
|
|
959 * used in the swap file, we must get it from block 0. But to read block
|
|
|
960 * 0 we need a page size. Use the minimal size for block 0 here, it will
|
|
|
961 * be set to the real value below.
|
|
|
962 */
|
|
|
963 mfp->mf_page_size = MIN_SWAP_PAGE_SIZE;
|
|
|
964
|
|
|
965 /*
|
|
|
966 * try to read block 0
|
|
|
967 */
|
|
|
968 if ((hp = mf_get(mfp, (blocknr_T)0, 1)) == NULL)
|
|
|
969 {
|
|
|
970 msg_start();
|
|
|
971 MSG_PUTS_ATTR(_("Unable to read block 0 from "), attr | MSG_HIST);
|
|
|
972 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST);
|
|
|
973 MSG_PUTS_ATTR(
|
|
|
974 _("\nMaybe no changes were made or Vim did not update the swap file."),
|
|
|
975 attr | MSG_HIST);
|
|
|
976 msg_end();
|
|
|
977 goto theend;
|
|
|
978 }
|
|
|
979 b0p = (ZERO_BL *)(hp->bh_data);
|
|
|
980 if (STRNCMP(b0p->b0_version, "VIM 3.0", 7) == 0)
|
|
|
981 {
|
|
|
982 msg_start();
|
|
|
983 msg_outtrans_attr(mfp->mf_fname, MSG_HIST);
|
|
|
984 MSG_PUTS_ATTR(_(" cannot be used with this version of Vim.\n"),
|
|
|
985 MSG_HIST);
|
|
|
986 MSG_PUTS_ATTR(_("Use Vim version 3.0.\n"), MSG_HIST);
|
|
|
987 msg_end();
|
|
|
988 goto theend;
|
|
|
989 }
|
|
|
990 if (b0p->b0_id[0] != BLOCK0_ID0 || b0p->b0_id[1] != BLOCK0_ID1)
|
|
|
991 {
|
|
|
992 EMSG2(_("E307: %s does not look like a Vim swap file"), mfp->mf_fname);
|
|
|
993 goto theend;
|
|
|
994 }
|
|
|
995 if (b0_magic_wrong(b0p))
|
|
|
996 {
|
|
|
997 msg_start();
|
|
|
998 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST);
|
|
|
999 #if defined(MSDOS) || defined(MSWIN)
|
|
|
1000 if (STRNCMP(b0p->b0_hname, "PC ", 3) == 0)
|
|
|
1001 MSG_PUTS_ATTR(_(" cannot be used with this version of Vim.\n"),
|
|
|
1002 attr | MSG_HIST);
|
|
|
1003 else
|
|
|
1004 #endif
|
|
|
1005 MSG_PUTS_ATTR(_(" cannot be used on this computer.\n"),
|
|
|
1006 attr | MSG_HIST);
|
|
|
1007 MSG_PUTS_ATTR(_("The file was created on "), attr | MSG_HIST);
|
|
|
1008 /* avoid going past the end of a currupted hostname */
|
|
|
1009 b0p->b0_fname[0] = NUL;
|
|
|
1010 MSG_PUTS_ATTR(b0p->b0_hname, attr | MSG_HIST);
|
|
|
1011 MSG_PUTS_ATTR(_(",\nor the file has been damaged."), attr | MSG_HIST);
|
|
|
1012 msg_end();
|
|
|
1013 goto theend;
|
|
|
1014 }
|
|
1105
|
1015
|
|
7
|
1016 /*
|
|
|
1017 * If we guessed the wrong page size, we have to recalculate the
|
|
|
1018 * highest block number in the file.
|
|
|
1019 */
|
|
|
1020 if (mfp->mf_page_size != (unsigned)char_to_long(b0p->b0_page_size))
|
|
|
1021 {
|
|
1105
|
1022 unsigned previous_page_size = mfp->mf_page_size;
|
|
|
1023
|
|
7
|
1024 mf_new_page_size(mfp, (unsigned)char_to_long(b0p->b0_page_size));
|
|
1105
|
1025 if (mfp->mf_page_size < previous_page_size)
|
|
|
1026 {
|
|
|
1027 msg_start();
|
|
|
1028 msg_outtrans_attr(mfp->mf_fname, attr | MSG_HIST);
|
|
|
1029 MSG_PUTS_ATTR(_(" has been damaged (page size is smaller than minimum value).\n"),
|
|
|
1030 attr | MSG_HIST);
|
|
|
1031 msg_end();
|
|
|
1032 goto theend;
|
|
|
1033 }
|
|
7
|
1034 if ((size = lseek(mfp->mf_fd, (off_t)0L, SEEK_END)) <= 0)
|
|
|
1035 mfp->mf_blocknr_max = 0; /* no file or empty file */
|
|
|
1036 else
|
|
|
1037 mfp->mf_blocknr_max = (blocknr_T)(size / mfp->mf_page_size);
|
|
|
1038 mfp->mf_infile_count = mfp->mf_blocknr_max;
|
|
1105
|
1039
|
|
|
1040 /* need to reallocate the memory used to store the data */
|
|
|
1041 p = alloc(mfp->mf_page_size);
|
|
|
1042 if (p == NULL)
|
|
|
1043 goto theend;
|
|
|
1044 mch_memmove(p, hp->bh_data, previous_page_size);
|
|
|
1045 vim_free(hp->bh_data);
|
|
|
1046 hp->bh_data = p;
|
|
|
1047 b0p = (ZERO_BL *)(hp->bh_data);
|
|
7
|
1048 }
|
|
|
1049
|
|
|
1050 /*
|
|
|
1051 * If .swp file name given directly, use name from swap file for buffer.
|
|
|
1052 */
|
|
|
1053 if (directly)
|
|
|
1054 {
|
|
|
1055 expand_env(b0p->b0_fname, NameBuff, MAXPATHL);
|
|
|
1056 if (setfname(curbuf, NameBuff, NULL, TRUE) == FAIL)
|
|
|
1057 goto theend;
|
|
|
1058 }
|
|
|
1059
|
|
|
1060 home_replace(NULL, mfp->mf_fname, NameBuff, MAXPATHL, TRUE);
|
|
274
|
1061 smsg((char_u *)_("Using swap file \"%s\""), NameBuff);
|
|
7
|
1062
|
|
|
1063 if (buf_spname(curbuf) != NULL)
|
|
|
1064 STRCPY(NameBuff, buf_spname(curbuf));
|
|
|
1065 else
|
|
|
1066 home_replace(NULL, curbuf->b_ffname, NameBuff, MAXPATHL, TRUE);
|
|
274
|
1067 smsg((char_u *)_("Original file \"%s\""), NameBuff);
|
|
7
|
1068 msg_putchar('\n');
|
|
|
1069
|
|
|
1070 /*
|
|
|
1071 * check date of swap file and original file
|
|
|
1072 */
|
|
|
1073 mtime = char_to_long(b0p->b0_mtime);
|
|
|
1074 if (curbuf->b_ffname != NULL
|
|
|
1075 && mch_stat((char *)curbuf->b_ffname, &org_stat) != -1
|
|
|
1076 && ((mch_stat((char *)mfp->mf_fname, &swp_stat) != -1
|
|
|
1077 && org_stat.st_mtime > swp_stat.st_mtime)
|
|
|
1078 || org_stat.st_mtime != mtime))
|
|
|
1079 {
|
|
|
1080 EMSG(_("E308: Warning: Original file may have been changed"));
|
|
|
1081 }
|
|
|
1082 out_flush();
|
|
39
|
1083
|
|
|
1084 /* Get the 'fileformat' and 'fileencoding' from block zero. */
|
|
|
1085 b0_ff = (b0p->b0_flags & B0_FF_MASK);
|
|
|
1086 if (b0p->b0_flags & B0_HAS_FENC)
|
|
|
1087 {
|
|
|
1088 for (p = b0p->b0_fname + B0_FNAME_SIZE;
|
|
|
1089 p > b0p->b0_fname && p[-1] != NUL; --p)
|
|
|
1090 ;
|
|
835
|
1091 b0_fenc = vim_strnsave(p, (int)(b0p->b0_fname + B0_FNAME_SIZE - p));
|
|
39
|
1092 }
|
|
|
1093
|
|
7
|
1094 mf_put(mfp, hp, FALSE, FALSE); /* release block 0 */
|
|
|
1095 hp = NULL;
|
|
|
1096
|
|
|
1097 /*
|
|
|
1098 * Now that we are sure that the file is going to be recovered, clear the
|
|
|
1099 * contents of the current buffer.
|
|
|
1100 */
|
|
|
1101 while (!(curbuf->b_ml.ml_flags & ML_EMPTY))
|
|
|
1102 ml_delete((linenr_T)1, FALSE);
|
|
|
1103
|
|
|
1104 /*
|
|
|
1105 * Try reading the original file to obtain the values of 'fileformat',
|
|
|
1106 * 'fileencoding', etc. Ignore errors. The text itself is not used.
|
|
|
1107 */
|
|
|
1108 if (curbuf->b_ffname != NULL)
|
|
|
1109 {
|
|
|
1110 (void)readfile(curbuf->b_ffname, NULL, (linenr_T)0,
|
|
|
1111 (linenr_T)0, (linenr_T)MAXLNUM, NULL, READ_NEW);
|
|
|
1112 while (!(curbuf->b_ml.ml_flags & ML_EMPTY))
|
|
|
1113 ml_delete((linenr_T)1, FALSE);
|
|
|
1114 }
|
|
|
1115
|
|
39
|
1116 /* Use the 'fileformat' and 'fileencoding' as stored in the swap file. */
|
|
|
1117 if (b0_ff != 0)
|
|
|
1118 set_fileformat(b0_ff - 1, OPT_LOCAL);
|
|
|
1119 if (b0_fenc != NULL)
|
|
|
1120 {
|
|
|
1121 set_option_value((char_u *)"fenc", 0L, b0_fenc, OPT_LOCAL);
|
|
|
1122 vim_free(b0_fenc);
|
|
|
1123 }
|
|
|
1124 unchanged(curbuf, TRUE);
|
|
|
1125
|
|
7
|
1126 bnum = 1; /* start with block 1 */
|
|
|
1127 page_count = 1; /* which is 1 page */
|
|
|
1128 lnum = 0; /* append after line 0 in curbuf */
|
|
|
1129 line_count = 0;
|
|
|
1130 idx = 0; /* start with first index in block 1 */
|
|
|
1131 error = 0;
|
|
|
1132 buf->b_ml.ml_stack_top = 0;
|
|
|
1133 buf->b_ml.ml_stack = NULL;
|
|
|
1134 buf->b_ml.ml_stack_size = 0; /* no stack yet */
|
|
|
1135
|
|
|
1136 if (curbuf->b_ffname == NULL)
|
|
|
1137 cannot_open = TRUE;
|
|
|
1138 else
|
|
|
1139 cannot_open = FALSE;
|
|
|
1140
|
|
|
1141 serious_error = FALSE;
|
|
|
1142 for ( ; !got_int; line_breakcheck())
|
|
|
1143 {
|
|
|
1144 if (hp != NULL)
|
|
|
1145 mf_put(mfp, hp, FALSE, FALSE); /* release previous block */
|
|
|
1146
|
|
|
1147 /*
|
|
|
1148 * get block
|
|
|
1149 */
|
|
|
1150 if ((hp = mf_get(mfp, (blocknr_T)bnum, page_count)) == NULL)
|
|
|
1151 {
|
|
|
1152 if (bnum == 1)
|
|
|
1153 {
|
|
|
1154 EMSG2(_("E309: Unable to read block 1 from %s"), mfp->mf_fname);
|
|
|
1155 goto theend;
|
|
|
1156 }
|
|
|
1157 ++error;
|
|
|
1158 ml_append(lnum++, (char_u *)_("???MANY LINES MISSING"),
|
|
|
1159 (colnr_T)0, TRUE);
|
|
|
1160 }
|
|
|
1161 else /* there is a block */
|
|
|
1162 {
|
|
|
1163 pp = (PTR_BL *)(hp->bh_data);
|
|
|
1164 if (pp->pb_id == PTR_ID) /* it is a pointer block */
|
|
|
1165 {
|
|
|
1166 /* check line count when using pointer block first time */
|
|
|
1167 if (idx == 0 && line_count != 0)
|
|
|
1168 {
|
|
|
1169 for (i = 0; i < (int)pp->pb_count; ++i)
|
|
|
1170 line_count -= pp->pb_pointer[i].pe_line_count;
|
|
|
1171 if (line_count != 0)
|
|
|
1172 {
|
|
|
1173 ++error;
|
|
|
1174 ml_append(lnum++, (char_u *)_("???LINE COUNT WRONG"),
|
|
|
1175 (colnr_T)0, TRUE);
|
|
|
1176 }
|
|
|
1177 }
|
|
|
1178
|
|
|
1179 if (pp->pb_count == 0)
|
|
|
1180 {
|
|
|
1181 ml_append(lnum++, (char_u *)_("???EMPTY BLOCK"),
|
|
|
1182 (colnr_T)0, TRUE);
|
|
|
1183 ++error;
|
|
|
1184 }
|
|
|
1185 else if (idx < (int)pp->pb_count) /* go a block deeper */
|
|
|
1186 {
|
|
|
1187 if (pp->pb_pointer[idx].pe_bnum < 0)
|
|
|
1188 {
|
|
|
1189 /*
|
|
|
1190 * Data block with negative block number.
|
|
|
1191 * Try to read lines from the original file.
|
|
|
1192 * This is slow, but it works.
|
|
|
1193 */
|
|
|
1194 if (!cannot_open)
|
|
|
1195 {
|
|
|
1196 line_count = pp->pb_pointer[idx].pe_line_count;
|
|
|
1197 if (readfile(curbuf->b_ffname, NULL, lnum,
|
|
|
1198 pp->pb_pointer[idx].pe_old_lnum - 1,
|
|
|
1199 line_count, NULL, 0) == FAIL)
|
|
|
1200 cannot_open = TRUE;
|
|
|
1201 else
|
|
|
1202 lnum += line_count;
|
|
|
1203 }
|
|
|
1204 if (cannot_open)
|
|
|
1205 {
|
|
|
1206 ++error;
|
|
|
1207 ml_append(lnum++, (char_u *)_("???LINES MISSING"),
|
|
|
1208 (colnr_T)0, TRUE);
|
|
|
1209 }
|
|
|
1210 ++idx; /* get same block again for next index */
|
|
|
1211 continue;
|
|
|
1212 }
|
|
|
1213
|
|
|
1214 /*
|
|
|
1215 * going one block deeper in the tree
|
|
|
1216 */
|
|
|
1217 if ((top = ml_add_stack(buf)) < 0) /* new entry in stack */
|
|
|
1218 {
|
|
|
1219 ++error;
|
|
|
1220 break; /* out of memory */
|
|
|
1221 }
|
|
|
1222 ip = &(buf->b_ml.ml_stack[top]);
|
|
|
1223 ip->ip_bnum = bnum;
|
|
|
1224 ip->ip_index = idx;
|
|
|
1225
|
|
|
1226 bnum = pp->pb_pointer[idx].pe_bnum;
|
|
|
1227 line_count = pp->pb_pointer[idx].pe_line_count;
|
|
|
1228 page_count = pp->pb_pointer[idx].pe_page_count;
|
|
|
1229 continue;
|
|
|
1230 }
|
|
|
1231 }
|
|
|
1232 else /* not a pointer block */
|
|
|
1233 {
|
|
|
1234 dp = (DATA_BL *)(hp->bh_data);
|
|
|
1235 if (dp->db_id != DATA_ID) /* block id wrong */
|
|
|
1236 {
|
|
|
1237 if (bnum == 1)
|
|
|
1238 {
|
|
|
1239 EMSG2(_("E310: Block 1 ID wrong (%s not a .swp file?)"),
|
|
|
1240 mfp->mf_fname);
|
|
|
1241 goto theend;
|
|
|
1242 }
|
|
|
1243 ++error;
|
|
|
1244 ml_append(lnum++, (char_u *)_("???BLOCK MISSING"),
|
|
|
1245 (colnr_T)0, TRUE);
|
|
|
1246 }
|
|
|
1247 else
|
|
|
1248 {
|
|
|
1249 /*
|
|
|
1250 * it is a data block
|
|
|
1251 * Append all the lines in this block
|
|
|
1252 */
|
|
|
1253 has_error = FALSE;
|
|
|
1254 /*
|
|
|
1255 * check length of block
|
|
|
1256 * if wrong, use length in pointer block
|
|
|
1257 */
|
|
|
1258 if (page_count * mfp->mf_page_size != dp->db_txt_end)
|
|
|
1259 {
|
|
|
1260 ml_append(lnum++, (char_u *)_("??? from here until ???END lines may be messed up"),
|
|
|
1261 (colnr_T)0, TRUE);
|
|
|
1262 ++error;
|
|
|
1263 has_error = TRUE;
|
|
|
1264 dp->db_txt_end = page_count * mfp->mf_page_size;
|
|
|
1265 }
|
|
|
1266
|
|
|
1267 /* make sure there is a NUL at the end of the block */
|
|
|
1268 *((char_u *)dp + dp->db_txt_end - 1) = NUL;
|
|
|
1269
|
|
|
1270 /*
|
|
|
1271 * check number of lines in block
|
|
|
1272 * if wrong, use count in data block
|
|
|
1273 */
|
|
|
1274 if (line_count != dp->db_line_count)
|
|
|
1275 {
|
|
|
1276 ml_append(lnum++, (char_u *)_("??? from here until ???END lines may have been inserted/deleted"),
|
|
|
1277 (colnr_T)0, TRUE);
|
|
|
1278 ++error;
|
|
|
1279 has_error = TRUE;
|
|
|
1280 }
|
|
|
1281
|
|
|
1282 for (i = 0; i < dp->db_line_count; ++i)
|
|
|
1283 {
|
|
|
1284 txt_start = (dp->db_index[i] & DB_INDEX_MASK);
|
|
|
1285 if (txt_start <= HEADER_SIZE
|
|
|
1286 || txt_start >= (int)dp->db_txt_end)
|
|
|
1287 {
|
|
|
1288 p = (char_u *)"???";
|
|
|
1289 ++error;
|
|
|
1290 }
|
|
|
1291 else
|
|
|
1292 p = (char_u *)dp + txt_start;
|
|
|
1293 ml_append(lnum++, p, (colnr_T)0, TRUE);
|
|
|
1294 }
|
|
|
1295 if (has_error)
|
|
|
1296 ml_append(lnum++, (char_u *)_("???END"), (colnr_T)0, TRUE);
|
|
|
1297 }
|
|
|
1298 }
|
|
|
1299 }
|
|
|
1300
|
|
|
1301 if (buf->b_ml.ml_stack_top == 0) /* finished */
|
|
|
1302 break;
|
|
|
1303
|
|
|
1304 /*
|
|
|
1305 * go one block up in the tree
|
|
|
1306 */
|
|
|
1307 ip = &(buf->b_ml.ml_stack[--(buf->b_ml.ml_stack_top)]);
|
|
|
1308 bnum = ip->ip_bnum;
|
|
|
1309 idx = ip->ip_index + 1; /* go to next index */
|
|
|
1310 page_count = 1;
|
|
|
1311 }
|
|
|
1312
|
|
|
1313 /*
|
|
|
1314 * The dummy line from the empty buffer will now be after the last line in
|
|
|
1315 * the buffer. Delete it.
|
|
|
1316 */
|
|
|
1317 ml_delete(curbuf->b_ml.ml_line_count, FALSE);
|
|
|
1318 curbuf->b_flags |= BF_RECOVERED;
|
|
|
1319
|
|
|
1320 recoverymode = FALSE;
|
|
|
1321 if (got_int)
|
|
|
1322 EMSG(_("E311: Recovery Interrupted"));
|
|
|
1323 else if (error)
|
|
|
1324 {
|
|
|
1325 ++no_wait_return;
|
|
|
1326 MSG(">>>>>>>>>>>>>");
|
|
|
1327 EMSG(_("E312: Errors detected while recovering; look for lines starting with ???"));
|
|
|
1328 --no_wait_return;
|
|
|
1329 MSG(_("See \":help E312\" for more information."));
|
|
|
1330 MSG(">>>>>>>>>>>>>");
|
|
|
1331 }
|
|
|
1332 else
|
|
|
1333 {
|
|
|
1334 MSG(_("Recovery completed. You should check if everything is OK."));
|
|
|
1335 MSG_PUTS(_("\n(You might want to write out this file under another name\n"));
|
|
|
1336 MSG_PUTS(_("and run diff with the original file to check for changes)\n"));
|
|
|
1337 MSG_PUTS(_("Delete the .swp file afterwards.\n\n"));
|
|
|
1338 cmdline_row = msg_row;
|
|
|
1339 }
|
|
|
1340 redraw_curbuf_later(NOT_VALID);
|
|
|
1341
|
|
|
1342 theend:
|
|
|
1343 recoverymode = FALSE;
|
|
|
1344 if (mfp != NULL)
|
|
|
1345 {
|
|
|
1346 if (hp != NULL)
|
|
|
1347 mf_put(mfp, hp, FALSE, FALSE);
|
|
|
1348 mf_close(mfp, FALSE); /* will also vim_free(mfp->mf_fname) */
|
|
|
1349 }
|
|
1053
|
1350 if (buf != NULL)
|
|
|
1351 {
|
|
|
1352 vim_free(buf->b_ml.ml_stack);
|
|
|
1353 vim_free(buf);
|
|
|
1354 }
|
|
7
|
1355 if (serious_error && called_from_main)
|
|
|
1356 ml_close(curbuf, TRUE);
|
|
|
1357 #ifdef FEAT_AUTOCMD
|
|
|
1358 else
|
|
|
1359 {
|
|
|
1360 apply_autocmds(EVENT_BUFREADPOST, NULL, curbuf->b_fname, FALSE, curbuf);
|
|
|
1361 apply_autocmds(EVENT_BUFWINENTER, NULL, curbuf->b_fname, FALSE, curbuf);
|
|
|
1362 }
|
|
|
1363 #endif
|
|
|
1364 return;
|
|
|
1365 }
|
|
|
1366
|
|
|
1367 /*
|
|
|
1368 * Find the names of swap files in current directory and the directory given
|
|
|
1369 * with the 'directory' option.
|
|
|
1370 *
|
|
|
1371 * Used to:
|
|
|
1372 * - list the swap files for "vim -r"
|
|
|
1373 * - count the number of swap files when recovering
|
|
|
1374 * - list the swap files when recovering
|
|
|
1375 * - find the name of the n'th swap file when recovering
|
|
|
1376 */
|
|
|
1377 int
|
|
|
1378 recover_names(fname, list, nr)
|
|
|
1379 char_u **fname; /* base for swap file name */
|
|
|
1380 int list; /* when TRUE, list the swap file names */
|
|
|
1381 int nr; /* when non-zero, return nr'th swap file name */
|
|
|
1382 {
|
|
|
1383 int num_names;
|
|
|
1384 char_u *(names[6]);
|
|
|
1385 char_u *tail;
|
|
|
1386 char_u *p;
|
|
|
1387 int num_files;
|
|
|
1388 int file_count = 0;
|
|
|
1389 char_u **files;
|
|
|
1390 int i;
|
|
|
1391 char_u *dirp;
|
|
|
1392 char_u *dir_name;
|
|
|
1393
|
|
|
1394 if (list)
|
|
|
1395 {
|
|
|
1396 /* use msg() to start the scrolling properly */
|
|
|
1397 msg((char_u *)_("Swap files found:"));
|
|
|
1398 msg_putchar('\n');
|
|
|
1399 }
|
|
|
1400
|
|
|
1401 /*
|
|
|
1402 * Do the loop for every directory in 'directory'.
|
|
|
1403 * First allocate some memory to put the directory name in.
|
|
|
1404 */
|
|
|
1405 dir_name = alloc((unsigned)STRLEN(p_dir) + 1);
|
|
|
1406 dirp = p_dir;
|
|
|
1407 while (dir_name != NULL && *dirp)
|
|
|
1408 {
|
|
|
1409 /*
|
|
|
1410 * Isolate a directory name from *dirp and put it in dir_name (we know
|
|
|
1411 * it is large enough, so use 31000 for length).
|
|
|
1412 * Advance dirp to next directory name.
|
|
|
1413 */
|
|
|
1414 (void)copy_option_part(&dirp, dir_name, 31000, ",");
|
|
|
1415
|
|
|
1416 if (dir_name[0] == '.' && dir_name[1] == NUL) /* check current dir */
|
|
|
1417 {
|
|
|
1418 if (fname == NULL || *fname == NULL)
|
|
|
1419 {
|
|
|
1420 #ifdef VMS
|
|
|
1421 names[0] = vim_strsave((char_u *)"*_sw%");
|
|
|
1422 #else
|
|
|
1423 # ifdef RISCOS
|
|
|
1424 names[0] = vim_strsave((char_u *)"*_sw#");
|
|
|
1425 # else
|
|
|
1426 names[0] = vim_strsave((char_u *)"*.sw?");
|
|
|
1427 # endif
|
|
|
1428 #endif
|
|
1005
|
1429 #if defined(UNIX) || defined(WIN3264)
|
|
|
1430 /* For Unix names starting with a dot are special. MS-Windows
|
|
|
1431 * supports this too, on some file systems. */
|
|
7
|
1432 names[1] = vim_strsave((char_u *)".*.sw?");
|
|
|
1433 names[2] = vim_strsave((char_u *)".sw?");
|
|
|
1434 num_names = 3;
|
|
|
1435 #else
|
|
|
1436 # ifdef VMS
|
|
|
1437 names[1] = vim_strsave((char_u *)".*_sw%");
|
|
|
1438 num_names = 2;
|
|
|
1439 # else
|
|
|
1440 num_names = 1;
|
|
|
1441 # endif
|
|
|
1442 #endif
|
|
|
1443 }
|
|
|
1444 else
|
|
|
1445 num_names = recov_file_names(names, *fname, TRUE);
|
|
|
1446 }
|
|
|
1447 else /* check directory dir_name */
|
|
|
1448 {
|
|
|
1449 if (fname == NULL || *fname == NULL)
|
|
|
1450 {
|
|
|
1451 #ifdef VMS
|
|
|
1452 names[0] = concat_fnames(dir_name, (char_u *)"*_sw%", TRUE);
|
|
|
1453 #else
|
|
|
1454 # ifdef RISCOS
|
|
|
1455 names[0] = concat_fnames(dir_name, (char_u *)"*_sw#", TRUE);
|
|
|
1456 # else
|
|
|
1457 names[0] = concat_fnames(dir_name, (char_u *)"*.sw?", TRUE);
|
|
|
1458 # endif
|
|
|
1459 #endif
|
|
1005
|
1460 #if defined(UNIX) || defined(WIN3264)
|
|
|
1461 /* For Unix names starting with a dot are special. MS-Windows
|
|
|
1462 * supports this too, on some file systems. */
|
|
7
|
1463 names[1] = concat_fnames(dir_name, (char_u *)".*.sw?", TRUE);
|
|
|
1464 names[2] = concat_fnames(dir_name, (char_u *)".sw?", TRUE);
|
|
|
1465 num_names = 3;
|
|
|
1466 #else
|
|
|
1467 # ifdef VMS
|
|
|
1468 names[1] = concat_fnames(dir_name, (char_u *)".*_sw%", TRUE);
|
|
|
1469 num_names = 2;
|
|
|
1470 # else
|
|
|
1471 num_names = 1;
|
|
|
1472 # endif
|
|
|
1473 #endif
|
|
|
1474 }
|
|
|
1475 else
|
|
|
1476 {
|
|
|
1477 #if defined(UNIX) || defined(WIN3264)
|
|
|
1478 p = dir_name + STRLEN(dir_name);
|
|
39
|
1479 if (after_pathsep(dir_name, p) && p[-1] == p[-2])
|
|
7
|
1480 {
|
|
|
1481 /* Ends with '//', Use Full path for swap name */
|
|
|
1482 tail = make_percent_swname(dir_name, *fname);
|
|
|
1483 }
|
|
|
1484 else
|
|
|
1485 #endif
|
|
|
1486 {
|
|
|
1487 tail = gettail(*fname);
|
|
|
1488 tail = concat_fnames(dir_name, tail, TRUE);
|
|
|
1489 }
|
|
|
1490 if (tail == NULL)
|
|
|
1491 num_names = 0;
|
|
|
1492 else
|
|
|
1493 {
|
|
|
1494 num_names = recov_file_names(names, tail, FALSE);
|
|
|
1495 vim_free(tail);
|
|
|
1496 }
|
|
|
1497 }
|
|
|
1498 }
|
|
|
1499
|
|
|
1500 /* check for out-of-memory */
|
|
|
1501 for (i = 0; i < num_names; ++i)
|
|
|
1502 {
|
|
|
1503 if (names[i] == NULL)
|
|
|
1504 {
|
|
|
1505 for (i = 0; i < num_names; ++i)
|
|
|
1506 vim_free(names[i]);
|
|
|
1507 num_names = 0;
|
|
|
1508 }
|
|
|
1509 }
|
|
|
1510 if (num_names == 0)
|
|
|
1511 num_files = 0;
|
|
|
1512 else if (expand_wildcards(num_names, names, &num_files, &files,
|
|
|
1513 EW_KEEPALL|EW_FILE|EW_SILENT) == FAIL)
|
|
|
1514 num_files = 0;
|
|
|
1515
|
|
|
1516 /*
|
|
|
1517 * When no swap file found, wildcard expansion might have failed (e.g.
|
|
|
1518 * not able to execute the shell).
|
|
|
1519 * Try finding a swap file by simply adding ".swp" to the file name.
|
|
|
1520 */
|
|
|
1521 if (*dirp == NUL && file_count + num_files == 0
|
|
|
1522 && fname != NULL && *fname != NULL)
|
|
|
1523 {
|
|
|
1524 struct stat st;
|
|
|
1525 char_u *swapname;
|
|
|
1526
|
|
|
1527 #if defined(VMS) || defined(RISCOS)
|
|
|
1528 swapname = modname(*fname, (char_u *)"_swp", FALSE);
|
|
|
1529 #else
|
|
|
1530 swapname = modname(*fname, (char_u *)".swp", TRUE);
|
|
|
1531 #endif
|
|
|
1532 if (swapname != NULL)
|
|
|
1533 {
|
|
|
1534 if (mch_stat((char *)swapname, &st) != -1) /* It exists! */
|
|
|
1535 {
|
|
|
1536 files = (char_u **)alloc((unsigned)sizeof(char_u *));
|
|
|
1537 if (files != NULL)
|
|
|
1538 {
|
|
|
1539 files[0] = swapname;
|
|
|
1540 swapname = NULL;
|
|
|
1541 num_files = 1;
|
|
|
1542 }
|
|
|
1543 }
|
|
|
1544 vim_free(swapname);
|
|
|
1545 }
|
|
|
1546 }
|
|
|
1547
|
|
|
1548 /*
|
|
|
1549 * remove swapfile name of the current buffer, it must be ignored
|
|
|
1550 */
|
|
|
1551 if (curbuf->b_ml.ml_mfp != NULL
|
|
|
1552 && (p = curbuf->b_ml.ml_mfp->mf_fname) != NULL)
|
|
|
1553 {
|
|
|
1554 for (i = 0; i < num_files; ++i)
|
|
|
1555 if (fullpathcmp(p, files[i], TRUE) & FPC_SAME)
|
|
|
1556 {
|
|
|
1557 vim_free(files[i]);
|
|
|
1558 --num_files;
|
|
|
1559 for ( ; i < num_files; ++i)
|
|
|
1560 files[i] = files[i + 1];
|
|
|
1561 }
|
|
|
1562 }
|
|
838
|
1563 if (nr > 0)
|
|
7
|
1564 {
|
|
|
1565 file_count += num_files;
|
|
|
1566 if (nr <= file_count)
|
|
|
1567 {
|
|
|
1568 *fname = vim_strsave(files[nr - 1 + num_files - file_count]);
|
|
|
1569 dirp = (char_u *)""; /* stop searching */
|
|
|
1570 }
|
|
|
1571 }
|
|
|
1572 else if (list)
|
|
|
1573 {
|
|
|
1574 if (dir_name[0] == '.' && dir_name[1] == NUL)
|
|
|
1575 {
|
|
|
1576 if (fname == NULL || *fname == NULL)
|
|
|
1577 MSG_PUTS(_(" In current directory:\n"));
|
|
|
1578 else
|
|
|
1579 MSG_PUTS(_(" Using specified name:\n"));
|
|
|
1580 }
|
|
|
1581 else
|
|
|
1582 {
|
|
|
1583 MSG_PUTS(_(" In directory "));
|
|
|
1584 msg_home_replace(dir_name);
|
|
|
1585 MSG_PUTS(":\n");
|
|
|
1586 }
|
|
|
1587
|
|
|
1588 if (num_files)
|
|
|
1589 {
|
|
|
1590 for (i = 0; i < num_files; ++i)
|
|
|
1591 {
|
|
|
1592 /* print the swap file name */
|
|
|
1593 msg_outnum((long)++file_count);
|
|
|
1594 MSG_PUTS(". ");
|
|
|
1595 msg_puts(gettail(files[i]));
|
|
|
1596 msg_putchar('\n');
|
|
|
1597 (void)swapfile_info(files[i]);
|
|
|
1598 }
|
|
|
1599 }
|
|
|
1600 else
|
|
|
1601 MSG_PUTS(_(" -- none --\n"));
|
|
|
1602 out_flush();
|
|
|
1603 }
|
|
|
1604 else
|
|
|
1605 file_count += num_files;
|
|
|
1606
|
|
|
1607 for (i = 0; i < num_names; ++i)
|
|
|
1608 vim_free(names[i]);
|
|
838
|
1609 if (num_files > 0)
|
|
|
1610 FreeWild(num_files, files);
|
|
7
|
1611 }
|
|
|
1612 vim_free(dir_name);
|
|
|
1613 return file_count;
|
|
|
1614 }
|
|
|
1615
|
|
|
1616 #if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */
|
|
|
1617 /*
|
|
|
1618 * Append the full path to name with path separators made into percent
|
|
|
1619 * signs, to dir. An unnamed buffer is handled as "" (<currentdir>/"")
|
|
|
1620 */
|
|
|
1621 static char_u *
|
|
|
1622 make_percent_swname(dir, name)
|
|
|
1623 char_u *dir;
|
|
|
1624 char_u *name;
|
|
|
1625 {
|
|
39
|
1626 char_u *d, *s, *f;
|
|
7
|
1627
|
|
|
1628 f = fix_fname(name != NULL ? name : (char_u *) "");
|
|
|
1629 d = NULL;
|
|
|
1630 if (f != NULL)
|
|
|
1631 {
|
|
|
1632 s = alloc((unsigned)(STRLEN(f) + 1));
|
|
|
1633 if (s != NULL)
|
|
|
1634 {
|
|
39
|
1635 STRCPY(s, f);
|
|
|
1636 for (d = s; *d != NUL; mb_ptr_adv(d))
|
|
|
1637 if (vim_ispathsep(*d))
|
|
|
1638 *d = '%';
|
|
7
|
1639 d = concat_fnames(dir, s, TRUE);
|
|
|
1640 vim_free(s);
|
|
|
1641 }
|
|
|
1642 vim_free(f);
|
|
|
1643 }
|
|
|
1644 return d;
|
|
|
1645 }
|
|
|
1646 #endif
|
|
|
1647
|
|
|
1648 #if (defined(UNIX) || defined(__EMX__) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG))
|
|
|
1649 static int process_still_running;
|
|
|
1650 #endif
|
|
|
1651
|
|
|
1652 /*
|
|
580
|
1653 * Give information about an existing swap file.
|
|
7
|
1654 * Returns timestamp (0 when unknown).
|
|
|
1655 */
|
|
|
1656 static time_t
|
|
|
1657 swapfile_info(fname)
|
|
|
1658 char_u *fname;
|
|
|
1659 {
|
|
|
1660 struct stat st;
|
|
|
1661 int fd;
|
|
|
1662 struct block0 b0;
|
|
|
1663 time_t x = (time_t)0;
|
|
1001
|
1664 char *p;
|
|
7
|
1665 #ifdef UNIX
|
|
|
1666 char_u uname[B0_UNAME_SIZE];
|
|
|
1667 #endif
|
|
|
1668
|
|
|
1669 /* print the swap file date */
|
|
|
1670 if (mch_stat((char *)fname, &st) != -1)
|
|
|
1671 {
|
|
|
1672 #ifdef UNIX
|
|
|
1673 /* print name of owner of the file */
|
|
|
1674 if (mch_get_uname(st.st_uid, uname, B0_UNAME_SIZE) == OK)
|
|
|
1675 {
|
|
|
1676 MSG_PUTS(_(" owned by: "));
|
|
|
1677 msg_outtrans(uname);
|
|
|
1678 MSG_PUTS(_(" dated: "));
|
|
|
1679 }
|
|
|
1680 else
|
|
|
1681 #endif
|
|
|
1682 MSG_PUTS(_(" dated: "));
|
|
|
1683 x = st.st_mtime; /* Manx C can't do &st.st_mtime */
|
|
1001
|
1684 p = ctime(&x); /* includes '\n' */
|
|
|
1685 if (p == NULL)
|
|
|
1686 MSG_PUTS("(invalid)\n");
|
|
|
1687 else
|
|
|
1688 MSG_PUTS(p);
|
|
7
|
1689 }
|
|
|
1690
|
|
|
1691 /*
|
|
|
1692 * print the original file name
|
|
|
1693 */
|
|
|
1694 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0);
|
|
|
1695 if (fd >= 0)
|
|
|
1696 {
|
|
|
1697 if (read(fd, (char *)&b0, sizeof(b0)) == sizeof(b0))
|
|
|
1698 {
|
|
|
1699 if (STRNCMP(b0.b0_version, "VIM 3.0", 7) == 0)
|
|
|
1700 {
|
|
|
1701 MSG_PUTS(_(" [from Vim version 3.0]"));
|
|
|
1702 }
|
|
|
1703 else if (b0.b0_id[0] != BLOCK0_ID0 || b0.b0_id[1] != BLOCK0_ID1)
|
|
|
1704 {
|
|
|
1705 MSG_PUTS(_(" [does not look like a Vim swap file]"));
|
|
|
1706 }
|
|
|
1707 else
|
|
|
1708 {
|
|
|
1709 MSG_PUTS(_(" file name: "));
|
|
|
1710 if (b0.b0_fname[0] == NUL)
|
|
9
|
1711 MSG_PUTS(_("[No Name]"));
|
|
7
|
1712 else
|
|
|
1713 msg_outtrans(b0.b0_fname);
|
|
|
1714
|
|
|
1715 MSG_PUTS(_("\n modified: "));
|
|
|
1716 MSG_PUTS(b0.b0_dirty ? _("YES") : _("no"));
|
|
|
1717
|
|
|
1718 if (*(b0.b0_uname) != NUL)
|
|
|
1719 {
|
|
|
1720 MSG_PUTS(_("\n user name: "));
|
|
|
1721 msg_outtrans(b0.b0_uname);
|
|
|
1722 }
|
|
|
1723
|
|
|
1724 if (*(b0.b0_hname) != NUL)
|
|
|
1725 {
|
|
|
1726 if (*(b0.b0_uname) != NUL)
|
|
|
1727 MSG_PUTS(_(" host name: "));
|
|
|
1728 else
|
|
|
1729 MSG_PUTS(_("\n host name: "));
|
|
|
1730 msg_outtrans(b0.b0_hname);
|
|
|
1731 }
|
|
|
1732
|
|
|
1733 if (char_to_long(b0.b0_pid) != 0L)
|
|
|
1734 {
|
|
|
1735 MSG_PUTS(_("\n process ID: "));
|
|
|
1736 msg_outnum(char_to_long(b0.b0_pid));
|
|
|
1737 #if defined(UNIX) || defined(__EMX__)
|
|
|
1738 /* EMX kill() not working correctly, it seems */
|
|
|
1739 if (kill((pid_t)char_to_long(b0.b0_pid), 0) == 0)
|
|
|
1740 {
|
|
|
1741 MSG_PUTS(_(" (still running)"));
|
|
|
1742 # if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
|
|
|
1743 process_still_running = TRUE;
|
|
|
1744 # endif
|
|
|
1745 }
|
|
|
1746 #endif
|
|
|
1747 }
|
|
|
1748
|
|
|
1749 if (b0_magic_wrong(&b0))
|
|
|
1750 {
|
|
|
1751 #if defined(MSDOS) || defined(MSWIN)
|
|
|
1752 if (STRNCMP(b0.b0_hname, "PC ", 3) == 0)
|
|
|
1753 MSG_PUTS(_("\n [not usable with this version of Vim]"));
|
|
|
1754 else
|
|
|
1755 #endif
|
|
|
1756 MSG_PUTS(_("\n [not usable on this computer]"));
|
|
|
1757 }
|
|
|
1758 }
|
|
|
1759 }
|
|
|
1760 else
|
|
|
1761 MSG_PUTS(_(" [cannot be read]"));
|
|
|
1762 close(fd);
|
|
|
1763 }
|
|
|
1764 else
|
|
|
1765 MSG_PUTS(_(" [cannot be opened]"));
|
|
|
1766 msg_putchar('\n');
|
|
|
1767
|
|
|
1768 return x;
|
|
|
1769 }
|
|
|
1770
|
|
|
1771 static int
|
|
|
1772 recov_file_names(names, path, prepend_dot)
|
|
|
1773 char_u **names;
|
|
|
1774 char_u *path;
|
|
|
1775 int prepend_dot;
|
|
|
1776 {
|
|
|
1777 int num_names;
|
|
|
1778
|
|
|
1779 #ifdef SHORT_FNAME
|
|
|
1780 /*
|
|
|
1781 * (MS-DOS) always short names
|
|
|
1782 */
|
|
|
1783 names[0] = modname(path, (char_u *)".sw?", FALSE);
|
|
|
1784 num_names = 1;
|
|
|
1785 #else /* !SHORT_FNAME */
|
|
|
1786 /*
|
|
|
1787 * (Win32 and Win64) never short names, but do prepend a dot.
|
|
|
1788 * (Not MS-DOS or Win32 or Win64) maybe short name, maybe not: Try both.
|
|
|
1789 * Only use the short name if it is different.
|
|
|
1790 */
|
|
|
1791 char_u *p;
|
|
|
1792 int i;
|
|
|
1793 # ifndef WIN3264
|
|
|
1794 int shortname = curbuf->b_shortname;
|
|
|
1795
|
|
|
1796 curbuf->b_shortname = FALSE;
|
|
|
1797 # endif
|
|
|
1798
|
|
|
1799 num_names = 0;
|
|
|
1800
|
|
|
1801 /*
|
|
|
1802 * May also add the file name with a dot prepended, for swap file in same
|
|
|
1803 * dir as original file.
|
|
|
1804 */
|
|
|
1805 if (prepend_dot)
|
|
|
1806 {
|
|
|
1807 names[num_names] = modname(path, (char_u *)".sw?", TRUE);
|
|
|
1808 if (names[num_names] == NULL)
|
|
|
1809 goto end;
|
|
|
1810 ++num_names;
|
|
|
1811 }
|
|
|
1812
|
|
|
1813 /*
|
|
|
1814 * Form the normal swap file name pattern by appending ".sw?".
|
|
|
1815 */
|
|
|
1816 #ifdef VMS
|
|
|
1817 names[num_names] = concat_fnames(path, (char_u *)"_sw%", FALSE);
|
|
|
1818 #else
|
|
|
1819 # ifdef RISCOS
|
|
|
1820 names[num_names] = concat_fnames(path, (char_u *)"_sw#", FALSE);
|
|
|
1821 # else
|
|
|
1822 names[num_names] = concat_fnames(path, (char_u *)".sw?", FALSE);
|
|
|
1823 # endif
|
|
|
1824 #endif
|
|
|
1825 if (names[num_names] == NULL)
|
|
|
1826 goto end;
|
|
|
1827 if (num_names >= 1) /* check if we have the same name twice */
|
|
|
1828 {
|
|
|
1829 p = names[num_names - 1];
|
|
|
1830 i = (int)STRLEN(names[num_names - 1]) - (int)STRLEN(names[num_names]);
|
|
|
1831 if (i > 0)
|
|
|
1832 p += i; /* file name has been expanded to full path */
|
|
|
1833
|
|
|
1834 if (STRCMP(p, names[num_names]) != 0)
|
|
|
1835 ++num_names;
|
|
|
1836 else
|
|
|
1837 vim_free(names[num_names]);
|
|
|
1838 }
|
|
|
1839 else
|
|
|
1840 ++num_names;
|
|
|
1841
|
|
|
1842 # ifndef WIN3264
|
|
|
1843 /*
|
|
|
1844 * Also try with 'shortname' set, in case the file is on a DOS filesystem.
|
|
|
1845 */
|
|
|
1846 curbuf->b_shortname = TRUE;
|
|
|
1847 #ifdef VMS
|
|
|
1848 names[num_names] = modname(path, (char_u *)"_sw%", FALSE);
|
|
|
1849 #else
|
|
|
1850 # ifdef RISCOS
|
|
|
1851 names[num_names] = modname(path, (char_u *)"_sw#", FALSE);
|
|
|
1852 # else
|
|
|
1853 names[num_names] = modname(path, (char_u *)".sw?", FALSE);
|
|
|
1854 # endif
|
|
|
1855 #endif
|
|
|
1856 if (names[num_names] == NULL)
|
|
|
1857 goto end;
|
|
|
1858
|
|
|
1859 /*
|
|
|
1860 * Remove the one from 'shortname', if it's the same as with 'noshortname'.
|
|
|
1861 */
|
|
|
1862 p = names[num_names];
|
|
|
1863 i = STRLEN(names[num_names]) - STRLEN(names[num_names - 1]);
|
|
|
1864 if (i > 0)
|
|
|
1865 p += i; /* file name has been expanded to full path */
|
|
|
1866 if (STRCMP(names[num_names - 1], p) == 0)
|
|
|
1867 vim_free(names[num_names]);
|
|
|
1868 else
|
|
|
1869 ++num_names;
|
|
|
1870 # endif
|
|
|
1871
|
|
|
1872 end:
|
|
|
1873 # ifndef WIN3264
|
|
|
1874 curbuf->b_shortname = shortname;
|
|
|
1875 # endif
|
|
|
1876
|
|
|
1877 #endif /* !SHORT_FNAME */
|
|
|
1878
|
|
|
1879 return num_names;
|
|
|
1880 }
|
|
|
1881
|
|
|
1882 /*
|
|
|
1883 * sync all memlines
|
|
|
1884 *
|
|
|
1885 * If 'check_file' is TRUE, check if original file exists and was not changed.
|
|
|
1886 * If 'check_char' is TRUE, stop syncing when character becomes available, but
|
|
|
1887 * always sync at least one block.
|
|
|
1888 */
|
|
|
1889 void
|
|
|
1890 ml_sync_all(check_file, check_char)
|
|
|
1891 int check_file;
|
|
|
1892 int check_char;
|
|
|
1893 {
|
|
|
1894 buf_T *buf;
|
|
|
1895 struct stat st;
|
|
|
1896
|
|
|
1897 for (buf = firstbuf; buf != NULL; buf = buf->b_next)
|
|
|
1898 {
|
|
|
1899 if (buf->b_ml.ml_mfp == NULL || buf->b_ml.ml_mfp->mf_fname == NULL)
|
|
|
1900 continue; /* no file */
|
|
|
1901
|
|
|
1902 ml_flush_line(buf); /* flush buffered line */
|
|
|
1903 /* flush locked block */
|
|
|
1904 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH);
|
|
|
1905 if (bufIsChanged(buf) && check_file && mf_need_trans(buf->b_ml.ml_mfp)
|
|
|
1906 && buf->b_ffname != NULL)
|
|
|
1907 {
|
|
|
1908 /*
|
|
|
1909 * If the original file does not exist anymore or has been changed
|
|
|
1910 * call ml_preserve() to get rid of all negative numbered blocks.
|
|
|
1911 */
|
|
|
1912 if (mch_stat((char *)buf->b_ffname, &st) == -1
|
|
|
1913 || st.st_mtime != buf->b_mtime_read
|
|
|
1914 || (size_t)st.st_size != buf->b_orig_size)
|
|
|
1915 {
|
|
|
1916 ml_preserve(buf, FALSE);
|
|
|
1917 did_check_timestamps = FALSE;
|
|
|
1918 need_check_timestamps = TRUE; /* give message later */
|
|
|
1919 }
|
|
|
1920 }
|
|
|
1921 if (buf->b_ml.ml_mfp->mf_dirty)
|
|
|
1922 {
|
|
|
1923 (void)mf_sync(buf->b_ml.ml_mfp, (check_char ? MFS_STOP : 0)
|
|
|
1924 | (bufIsChanged(buf) ? MFS_FLUSH : 0));
|
|
|
1925 if (check_char && ui_char_avail()) /* character available now */
|
|
|
1926 break;
|
|
|
1927 }
|
|
|
1928 }
|
|
|
1929 }
|
|
|
1930
|
|
|
1931 /*
|
|
|
1932 * sync one buffer, including negative blocks
|
|
|
1933 *
|
|
|
1934 * after this all the blocks are in the swap file
|
|
|
1935 *
|
|
|
1936 * Used for the :preserve command and when the original file has been
|
|
|
1937 * changed or deleted.
|
|
|
1938 *
|
|
|
1939 * when message is TRUE the success of preserving is reported
|
|
|
1940 */
|
|
|
1941 void
|
|
|
1942 ml_preserve(buf, message)
|
|
|
1943 buf_T *buf;
|
|
|
1944 int message;
|
|
|
1945 {
|
|
|
1946 bhdr_T *hp;
|
|
|
1947 linenr_T lnum;
|
|
|
1948 memfile_T *mfp = buf->b_ml.ml_mfp;
|
|
|
1949 int status;
|
|
|
1950 int got_int_save = got_int;
|
|
|
1951
|
|
|
1952 if (mfp == NULL || mfp->mf_fname == NULL)
|
|
|
1953 {
|
|
|
1954 if (message)
|
|
|
1955 EMSG(_("E313: Cannot preserve, there is no swap file"));
|
|
|
1956 return;
|
|
|
1957 }
|
|
|
1958
|
|
|
1959 /* We only want to stop when interrupted here, not when interrupted
|
|
|
1960 * before. */
|
|
|
1961 got_int = FALSE;
|
|
|
1962
|
|
|
1963 ml_flush_line(buf); /* flush buffered line */
|
|
|
1964 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */
|
|
|
1965 status = mf_sync(mfp, MFS_ALL | MFS_FLUSH);
|
|
|
1966
|
|
|
1967 /* stack is invalid after mf_sync(.., MFS_ALL) */
|
|
|
1968 buf->b_ml.ml_stack_top = 0;
|
|
|
1969
|
|
|
1970 /*
|
|
|
1971 * Some of the data blocks may have been changed from negative to
|
|
|
1972 * positive block number. In that case the pointer blocks need to be
|
|
|
1973 * updated.
|
|
|
1974 *
|
|
|
1975 * We don't know in which pointer block the references are, so we visit
|
|
|
1976 * all data blocks until there are no more translations to be done (or
|
|
|
1977 * we hit the end of the file, which can only happen in case a write fails,
|
|
|
1978 * e.g. when file system if full).
|
|
|
1979 * ml_find_line() does the work by translating the negative block numbers
|
|
|
1980 * when getting the first line of each data block.
|
|
|
1981 */
|
|
|
1982 if (mf_need_trans(mfp) && !got_int)
|
|
|
1983 {
|
|
|
1984 lnum = 1;
|
|
|
1985 while (mf_need_trans(mfp) && lnum <= buf->b_ml.ml_line_count)
|
|
|
1986 {
|
|
|
1987 hp = ml_find_line(buf, lnum, ML_FIND);
|
|
|
1988 if (hp == NULL)
|
|
|
1989 {
|
|
|
1990 status = FAIL;
|
|
|
1991 goto theend;
|
|
|
1992 }
|
|
|
1993 CHECK(buf->b_ml.ml_locked_low != lnum, "low != lnum");
|
|
|
1994 lnum = buf->b_ml.ml_locked_high + 1;
|
|
|
1995 }
|
|
|
1996 (void)ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush locked block */
|
|
|
1997 /* sync the updated pointer blocks */
|
|
|
1998 if (mf_sync(mfp, MFS_ALL | MFS_FLUSH) == FAIL)
|
|
|
1999 status = FAIL;
|
|
|
2000 buf->b_ml.ml_stack_top = 0; /* stack is invalid now */
|
|
|
2001 }
|
|
|
2002 theend:
|
|
|
2003 got_int |= got_int_save;
|
|
|
2004
|
|
|
2005 if (message)
|
|
|
2006 {
|
|
|
2007 if (status == OK)
|
|
|
2008 MSG(_("File preserved"));
|
|
|
2009 else
|
|
|
2010 EMSG(_("E314: Preserve failed"));
|
|
|
2011 }
|
|
|
2012 }
|
|
|
2013
|
|
|
2014 /*
|
|
|
2015 * NOTE: The pointer returned by the ml_get_*() functions only remains valid
|
|
|
2016 * until the next call!
|
|
|
2017 * line1 = ml_get(1);
|
|
|
2018 * line2 = ml_get(2); // line1 is now invalid!
|
|
|
2019 * Make a copy of the line if necessary.
|
|
|
2020 */
|
|
|
2021 /*
|
|
|
2022 * get a pointer to a (read-only copy of a) line
|
|
|
2023 *
|
|
|
2024 * On failure an error message is given and IObuff is returned (to avoid
|
|
|
2025 * having to check for error everywhere).
|
|
|
2026 */
|
|
|
2027 char_u *
|
|
|
2028 ml_get(lnum)
|
|
|
2029 linenr_T lnum;
|
|
|
2030 {
|
|
|
2031 return ml_get_buf(curbuf, lnum, FALSE);
|
|
|
2032 }
|
|
|
2033
|
|
|
2034 /*
|
|
|
2035 * ml_get_pos: get pointer to position 'pos'
|
|
|
2036 */
|
|
|
2037 char_u *
|
|
|
2038 ml_get_pos(pos)
|
|
|
2039 pos_T *pos;
|
|
|
2040 {
|
|
|
2041 return (ml_get_buf(curbuf, pos->lnum, FALSE) + pos->col);
|
|
|
2042 }
|
|
|
2043
|
|
|
2044 /*
|
|
|
2045 * ml_get_curline: get pointer to cursor line.
|
|
|
2046 */
|
|
|
2047 char_u *
|
|
|
2048 ml_get_curline()
|
|
|
2049 {
|
|
|
2050 return ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE);
|
|
|
2051 }
|
|
|
2052
|
|
|
2053 /*
|
|
|
2054 * ml_get_cursor: get pointer to cursor position
|
|
|
2055 */
|
|
|
2056 char_u *
|
|
|
2057 ml_get_cursor()
|
|
|
2058 {
|
|
|
2059 return (ml_get_buf(curbuf, curwin->w_cursor.lnum, FALSE) +
|
|
|
2060 curwin->w_cursor.col);
|
|
|
2061 }
|
|
|
2062
|
|
|
2063 /*
|
|
|
2064 * get a pointer to a line in a specific buffer
|
|
|
2065 *
|
|
|
2066 * "will_change": if TRUE mark the buffer dirty (chars in the line will be
|
|
|
2067 * changed)
|
|
|
2068 */
|
|
|
2069 char_u *
|
|
|
2070 ml_get_buf(buf, lnum, will_change)
|
|
|
2071 buf_T *buf;
|
|
|
2072 linenr_T lnum;
|
|
|
2073 int will_change; /* line will be changed */
|
|
|
2074 {
|
|
1068
|
2075 bhdr_T *hp;
|
|
|
2076 DATA_BL *dp;
|
|
|
2077 char_u *ptr;
|
|
|
2078 static int recursive = 0;
|
|
7
|
2079
|
|
|
2080 if (lnum > buf->b_ml.ml_line_count) /* invalid line number */
|
|
|
2081 {
|
|
1068
|
2082 if (recursive == 0)
|
|
|
2083 {
|
|
|
2084 /* Avoid giving this message for a recursive call, may happen when
|
|
|
2085 * the GUI redraws part of the text. */
|
|
|
2086 ++recursive;
|
|
|
2087 EMSGN(_("E315: ml_get: invalid lnum: %ld"), lnum);
|
|
|
2088 --recursive;
|
|
|
2089 }
|
|
7
|
2090 errorret:
|
|
|
2091 STRCPY(IObuff, "???");
|
|
|
2092 return IObuff;
|
|
|
2093 }
|
|
|
2094 if (lnum <= 0) /* pretend line 0 is line 1 */
|
|
|
2095 lnum = 1;
|
|
|
2096
|
|
|
2097 if (buf->b_ml.ml_mfp == NULL) /* there are no lines */
|
|
|
2098 return (char_u *)"";
|
|
|
2099
|
|
|
2100 /*
|
|
|
2101 * See if it is the same line as requested last time.
|
|
|
2102 * Otherwise may need to flush last used line.
|
|
1066
|
2103 * Don't use the last used line when 'swapfile' is reset, need to load all
|
|
|
2104 * blocks.
|
|
7
|
2105 */
|
|
1066
|
2106 if (buf->b_ml.ml_line_lnum != lnum || mf_dont_release)
|
|
7
|
2107 {
|
|
|
2108 ml_flush_line(buf);
|
|
|
2109
|
|
|
2110 /*
|
|
|
2111 * Find the data block containing the line.
|
|
|
2112 * This also fills the stack with the blocks from the root to the data
|
|
|
2113 * block and releases any locked block.
|
|
|
2114 */
|
|
|
2115 if ((hp = ml_find_line(buf, lnum, ML_FIND)) == NULL)
|
|
|
2116 {
|
|
1068
|
2117 if (recursive == 0)
|
|
|
2118 {
|
|
|
2119 /* Avoid giving this message for a recursive call, may happen
|
|
|
2120 * when the GUI redraws part of the text. */
|
|
|
2121 ++recursive;
|
|
|
2122 EMSGN(_("E316: ml_get: cannot find line %ld"), lnum);
|
|
|
2123 --recursive;
|
|
|
2124 }
|
|
7
|
2125 goto errorret;
|
|
|
2126 }
|
|
|
2127
|
|
|
2128 dp = (DATA_BL *)(hp->bh_data);
|
|
|
2129
|
|
|
2130 ptr = (char_u *)dp + ((dp->db_index[lnum - buf->b_ml.ml_locked_low]) & DB_INDEX_MASK);
|
|
|
2131 buf->b_ml.ml_line_ptr = ptr;
|
|
|
2132 buf->b_ml.ml_line_lnum = lnum;
|
|
|
2133 buf->b_ml.ml_flags &= ~ML_LINE_DIRTY;
|
|
|
2134 }
|
|
|
2135 if (will_change)
|
|
|
2136 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS);
|
|
|
2137
|
|
|
2138 return buf->b_ml.ml_line_ptr;
|
|
|
2139 }
|
|
|
2140
|
|
|
2141 /*
|
|
|
2142 * Check if a line that was just obtained by a call to ml_get
|
|
|
2143 * is in allocated memory.
|
|
|
2144 */
|
|
|
2145 int
|
|
|
2146 ml_line_alloced()
|
|
|
2147 {
|
|
|
2148 return (curbuf->b_ml.ml_flags & ML_LINE_DIRTY);
|
|
|
2149 }
|
|
|
2150
|
|
|
2151 /*
|
|
|
2152 * Append a line after lnum (may be 0 to insert a line in front of the file).
|
|
|
2153 * "line" does not need to be allocated, but can't be another line in a
|
|
|
2154 * buffer, unlocking may make it invalid.
|
|
|
2155 *
|
|
|
2156 * newfile: TRUE when starting to edit a new file, meaning that pe_old_lnum
|
|
|
2157 * will be set for recovery
|
|
|
2158 * Check: The caller of this function should probably also call
|
|
|
2159 * appended_lines().
|
|
|
2160 *
|
|
|
2161 * return FAIL for failure, OK otherwise
|
|
|
2162 */
|
|
|
2163 int
|
|
|
2164 ml_append(lnum, line, len, newfile)
|
|
|
2165 linenr_T lnum; /* append after this line (can be 0) */
|
|
|
2166 char_u *line; /* text of the new line */
|
|
|
2167 colnr_T len; /* length of new line, including NUL, or 0 */
|
|
|
2168 int newfile; /* flag, see above */
|
|
|
2169 {
|
|
|
2170 /* When starting up, we might still need to create the memfile */
|
|
|
2171 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL) == FAIL)
|
|
|
2172 return FAIL;
|
|
|
2173
|
|
|
2174 if (curbuf->b_ml.ml_line_lnum != 0)
|
|
|
2175 ml_flush_line(curbuf);
|
|
|
2176 return ml_append_int(curbuf, lnum, line, len, newfile, FALSE);
|
|
|
2177 }
|
|
|
2178
|
|
748
|
2179 #if defined(FEAT_SPELL) || defined(PROTO)
|
|
625
|
2180 /*
|
|
|
2181 * Like ml_append() but for an arbitrary buffer. The buffer must already have
|
|
|
2182 * a memline.
|
|
|
2183 */
|
|
|
2184 int
|
|
|
2185 ml_append_buf(buf, lnum, line, len, newfile)
|
|
|
2186 buf_T *buf;
|
|
|
2187 linenr_T lnum; /* append after this line (can be 0) */
|
|
|
2188 char_u *line; /* text of the new line */
|
|
|
2189 colnr_T len; /* length of new line, including NUL, or 0 */
|
|
|
2190 int newfile; /* flag, see above */
|
|
|
2191 {
|
|
|
2192 if (buf->b_ml.ml_mfp == NULL)
|
|
|
2193 return FAIL;
|
|
|
2194
|
|
|
2195 if (buf->b_ml.ml_line_lnum != 0)
|
|
|
2196 ml_flush_line(buf);
|
|
|
2197 return ml_append_int(buf, lnum, line, len, newfile, FALSE);
|
|
|
2198 }
|
|
|
2199 #endif
|
|
|
2200
|
|
7
|
2201 static int
|
|
|
2202 ml_append_int(buf, lnum, line, len, newfile, mark)
|
|
|
2203 buf_T *buf;
|
|
|
2204 linenr_T lnum; /* append after this line (can be 0) */
|
|
|
2205 char_u *line; /* text of the new line */
|
|
|
2206 colnr_T len; /* length of line, including NUL, or 0 */
|
|
|
2207 int newfile; /* flag, see above */
|
|
|
2208 int mark; /* mark the new line */
|
|
|
2209 {
|
|
|
2210 int i;
|
|
|
2211 int line_count; /* number of indexes in current block */
|
|
|
2212 int offset;
|
|
|
2213 int from, to;
|
|
|
2214 int space_needed; /* space needed for new line */
|
|
|
2215 int page_size;
|
|
|
2216 int page_count;
|
|
|
2217 int db_idx; /* index for lnum in data block */
|
|
|
2218 bhdr_T *hp;
|
|
|
2219 memfile_T *mfp;
|
|
|
2220 DATA_BL *dp;
|
|
|
2221 PTR_BL *pp;
|
|
|
2222 infoptr_T *ip;
|
|
|
2223
|
|
|
2224 /* lnum out of range */
|
|
|
2225 if (lnum > buf->b_ml.ml_line_count || buf->b_ml.ml_mfp == NULL)
|
|
|
2226 return FAIL;
|
|
|
2227
|
|
|
2228 if (lowest_marked && lowest_marked > lnum)
|
|
|
2229 lowest_marked = lnum + 1;
|
|
|
2230
|
|
|
2231 if (len == 0)
|
|
|
2232 len = (colnr_T)STRLEN(line) + 1; /* space needed for the text */
|
|
|
2233 space_needed = len + INDEX_SIZE; /* space needed for text + index */
|
|
|
2234
|
|
|
2235 mfp = buf->b_ml.ml_mfp;
|
|
|
2236 page_size = mfp->mf_page_size;
|
|
|
2237
|
|
|
2238 /*
|
|
|
2239 * find the data block containing the previous line
|
|
|
2240 * This also fills the stack with the blocks from the root to the data block
|
|
|
2241 * This also releases any locked block.
|
|
|
2242 */
|
|
|
2243 if ((hp = ml_find_line(buf, lnum == 0 ? (linenr_T)1 : lnum,
|
|
|
2244 ML_INSERT)) == NULL)
|
|
|
2245 return FAIL;
|
|
|
2246
|
|
|
2247 buf->b_ml.ml_flags &= ~ML_EMPTY;
|
|
|
2248
|
|
|
2249 if (lnum == 0) /* got line one instead, correct db_idx */
|
|
|
2250 db_idx = -1; /* careful, it is negative! */
|
|
|
2251 else
|
|
|
2252 db_idx = lnum - buf->b_ml.ml_locked_low;
|
|
|
2253 /* get line count before the insertion */
|
|
|
2254 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low;
|
|
|
2255
|
|
|
2256 dp = (DATA_BL *)(hp->bh_data);
|
|
|
2257
|
|
|
2258 /*
|
|
|
2259 * If
|
|
|
2260 * - there is not enough room in the current block
|
|
|
2261 * - appending to the last line in the block
|
|
|
2262 * - not appending to the last line in the file
|
|
|
2263 * insert in front of the next block.
|
|
|
2264 */
|
|
|
2265 if ((int)dp->db_free < space_needed && db_idx == line_count - 1
|
|
|
2266 && lnum < buf->b_ml.ml_line_count)
|
|
|
2267 {
|
|
|
2268 /*
|
|
|
2269 * Now that the line is not going to be inserted in the block that we
|
|
|
2270 * expected, the line count has to be adjusted in the pointer blocks
|
|
|
2271 * by using ml_locked_lineadd.
|
|
|
2272 */
|
|
|
2273 --(buf->b_ml.ml_locked_lineadd);
|
|
|
2274 --(buf->b_ml.ml_locked_high);
|
|
|
2275 if ((hp = ml_find_line(buf, lnum + 1, ML_INSERT)) == NULL)
|
|
|
2276 return FAIL;
|
|
|
2277
|
|
|
2278 db_idx = -1; /* careful, it is negative! */
|
|
|
2279 /* get line count before the insertion */
|
|
|
2280 line_count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low;
|
|
|
2281 CHECK(buf->b_ml.ml_locked_low != lnum + 1, "locked_low != lnum + 1");
|
|
|
2282
|
|
|
2283 dp = (DATA_BL *)(hp->bh_data);
|
|
|
2284 }
|
|
|
2285
|
|
|
2286 ++buf->b_ml.ml_line_count;
|
|
|
2287
|
|
|
2288 if ((int)dp->db_free >= space_needed) /* enough room in data block */
|
|
|
2289 {
|
|
|
2290 /*
|
|
|
2291 * Insert new line in existing data block, or in data block allocated above.
|
|
|
2292 */
|
|
|
2293 dp->db_txt_start -= len;
|
|
|
2294 dp->db_free -= space_needed;
|
|
|
2295 ++(dp->db_line_count);
|
|
|
2296
|
|
|
2297 /*
|
|
|
2298 * move the text of the lines that follow to the front
|
|
|
2299 * adjust the indexes of the lines that follow
|
|
|
2300 */
|
|
|
2301 if (line_count > db_idx + 1) /* if there are following lines */
|
|
|
2302 {
|
|
|
2303 /*
|
|
|
2304 * Offset is the start of the previous line.
|
|
|
2305 * This will become the character just after the new line.
|
|
|
2306 */
|
|
|
2307 if (db_idx < 0)
|
|
|
2308 offset = dp->db_txt_end;
|
|
|
2309 else
|
|
|
2310 offset = ((dp->db_index[db_idx]) & DB_INDEX_MASK);
|
|
|
2311 mch_memmove((char *)dp + dp->db_txt_start,
|
|
|
2312 (char *)dp + dp->db_txt_start + len,
|
|
|
2313 (size_t)(offset - (dp->db_txt_start + len)));
|
|
|
2314 for (i = line_count - 1; i > db_idx; --i)
|
|
|
2315 dp->db_index[i + 1] = dp->db_index[i] - len;
|
|
|
2316 dp->db_index[db_idx + 1] = offset - len;
|
|
|
2317 }
|
|
|
2318 else /* add line at the end */
|
|
|
2319 dp->db_index[db_idx + 1] = dp->db_txt_start;
|
|
|
2320
|
|
|
2321 /*
|
|
|
2322 * copy the text into the block
|
|
|
2323 */
|
|
|
2324 mch_memmove((char *)dp + dp->db_index[db_idx + 1], line, (size_t)len);
|
|
|
2325 if (mark)
|
|
|
2326 dp->db_index[db_idx + 1] |= DB_MARKED;
|
|
|
2327
|
|
|
2328 /*
|
|
|
2329 * Mark the block dirty.
|
|
|
2330 */
|
|
|
2331 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY;
|
|
|
2332 if (!newfile)
|
|
|
2333 buf->b_ml.ml_flags |= ML_LOCKED_POS;
|
|
|
2334 }
|
|
|
2335 else /* not enough space in data block */
|
|
|
2336 {
|
|
|
2337 /*
|
|
|
2338 * If there is not enough room we have to create a new data block and copy some
|
|
|
2339 * lines into it.
|
|
|
2340 * Then we have to insert an entry in the pointer block.
|
|
|
2341 * If this pointer block also is full, we go up another block, and so on, up
|
|
|
2342 * to the root if necessary.
|
|
|
2343 * The line counts in the pointer blocks have already been adjusted by
|
|
|
2344 * ml_find_line().
|
|
|
2345 */
|
|
|
2346 long line_count_left, line_count_right;
|
|
|
2347 int page_count_left, page_count_right;
|
|
|
2348 bhdr_T *hp_left;
|
|
|
2349 bhdr_T *hp_right;
|
|
|
2350 bhdr_T *hp_new;
|
|
|
2351 int lines_moved;
|
|
|
2352 int data_moved = 0; /* init to shut up gcc */
|
|
|
2353 int total_moved = 0; /* init to shut up gcc */
|
|
|
2354 DATA_BL *dp_right, *dp_left;
|
|
|
2355 int stack_idx;
|
|
|
2356 int in_left;
|
|
|
2357 int lineadd;
|
|
|
2358 blocknr_T bnum_left, bnum_right;
|
|
|
2359 linenr_T lnum_left, lnum_right;
|
|
|
2360 int pb_idx;
|
|
|
2361 PTR_BL *pp_new;
|
|
|
2362
|
|
|
2363 /*
|
|
|
2364 * We are going to allocate a new data block. Depending on the
|
|
|
2365 * situation it will be put to the left or right of the existing
|
|
|
2366 * block. If possible we put the new line in the left block and move
|
|
|
2367 * the lines after it to the right block. Otherwise the new line is
|
|
|
2368 * also put in the right block. This method is more efficient when
|
|
|
2369 * inserting a lot of lines at one place.
|
|
|
2370 */
|
|
|
2371 if (db_idx < 0) /* left block is new, right block is existing */
|
|
|
2372 {
|
|
|
2373 lines_moved = 0;
|
|
|
2374 in_left = TRUE;
|
|
|
2375 /* space_needed does not change */
|
|
|
2376 }
|
|
|
2377 else /* left block is existing, right block is new */
|
|
|
2378 {
|
|
|
2379 lines_moved = line_count - db_idx - 1;
|
|
|
2380 if (lines_moved == 0)
|
|
|
2381 in_left = FALSE; /* put new line in right block */
|
|
|
2382 /* space_needed does not change */
|
|
|
2383 else
|
|
|
2384 {
|
|
|
2385 data_moved = ((dp->db_index[db_idx]) & DB_INDEX_MASK) -
|
|
|
2386 dp->db_txt_start;
|
|
|
2387 total_moved = data_moved + lines_moved * INDEX_SIZE;
|
|
|
2388 if ((int)dp->db_free + total_moved >= space_needed)
|
|
|
2389 {
|
|
|
2390 in_left = TRUE; /* put new line in left block */
|
|
|
2391 space_needed = total_moved;
|
|
|
2392 }
|
|
|
2393 else
|
|
|
2394 {
|
|
|
2395 in_left = FALSE; /* put new line in right block */
|
|
|
2396 space_needed += total_moved;
|
|
|
2397 }
|
|
|
2398 }
|
|
|
2399 }
|
|
|
2400
|
|
|
2401 page_count = ((space_needed + HEADER_SIZE) + page_size - 1) / page_size;
|
|
|
2402 if ((hp_new = ml_new_data(mfp, newfile, page_count)) == NULL)
|
|
|
2403 {
|
|
|
2404 /* correct line counts in pointer blocks */
|
|
|
2405 --(buf->b_ml.ml_locked_lineadd);
|
|
|
2406 --(buf->b_ml.ml_locked_high);
|
|
|
2407 return FAIL;
|
|
|
2408 }
|
|
|
2409 if (db_idx < 0) /* left block is new */
|
|
|
2410 {
|
|
|
2411 hp_left = hp_new;
|
|
|
2412 hp_right = hp;
|
|
|
2413 line_count_left = 0;
|
|
|
2414 line_count_right = line_count;
|
|
|
2415 }
|
|
|
2416 else /* right block is new */
|
|
|
2417 {
|
|
|
2418 hp_left = hp;
|
|
|
2419 hp_right = hp_new;
|
|
|
2420 line_count_left = line_count;
|
|
|
2421 line_count_right = 0;
|
|
|
2422 }
|
|
|
2423 dp_right = (DATA_BL *)(hp_right->bh_data);
|
|
|
2424 dp_left = (DATA_BL *)(hp_left->bh_data);
|
|
|
2425 bnum_left = hp_left->bh_bnum;
|
|
|
2426 bnum_right = hp_right->bh_bnum;
|
|
|
2427 page_count_left = hp_left->bh_page_count;
|
|
|
2428 page_count_right = hp_right->bh_page_count;
|
|
|
2429
|
|
|
2430 /*
|
|
|
2431 * May move the new line into the right/new block.
|
|
|
2432 */
|
|
|
2433 if (!in_left)
|
|
|
2434 {
|
|
|
2435 dp_right->db_txt_start -= len;
|
|
|
2436 dp_right->db_free -= len + INDEX_SIZE;
|
|
|
2437 dp_right->db_index[0] = dp_right->db_txt_start;
|
|
|
2438 if (mark)
|
|
|
2439 dp_right->db_index[0] |= DB_MARKED;
|
|
|
2440
|
|
|
2441 mch_memmove((char *)dp_right + dp_right->db_txt_start,
|
|
|
2442 line, (size_t)len);
|
|
|
2443 ++line_count_right;
|
|
|
2444 }
|
|
|
2445 /*
|
|
|
2446 * may move lines from the left/old block to the right/new one.
|
|
|
2447 */
|
|
|
2448 if (lines_moved)
|
|
|
2449 {
|
|
|
2450 /*
|
|
|
2451 */
|
|
|
2452 dp_right->db_txt_start -= data_moved;
|
|
|
2453 dp_right->db_free -= total_moved;
|
|
|
2454 mch_memmove((char *)dp_right + dp_right->db_txt_start,
|
|
|
2455 (char *)dp_left + dp_left->db_txt_start,
|
|
|
2456 (size_t)data_moved);
|
|
|
2457 offset = dp_right->db_txt_start - dp_left->db_txt_start;
|
|
|
2458 dp_left->db_txt_start += data_moved;
|
|
|
2459 dp_left->db_free += total_moved;
|
|
|
2460
|
|
|
2461 /*
|
|
|
2462 * update indexes in the new block
|
|
|
2463 */
|
|
|
2464 for (to = line_count_right, from = db_idx + 1;
|
|
|
2465 from < line_count_left; ++from, ++to)
|
|
|
2466 dp_right->db_index[to] = dp->db_index[from] + offset;
|
|
|
2467 line_count_right += lines_moved;
|
|
|
2468 line_count_left -= lines_moved;
|
|
|
2469 }
|
|
|
2470
|
|
|
2471 /*
|
|
|
2472 * May move the new line into the left (old or new) block.
|
|
|
2473 */
|
|
|
2474 if (in_left)
|
|
|
2475 {
|
|
|
2476 dp_left->db_txt_start -= len;
|
|
|
2477 dp_left->db_free -= len + INDEX_SIZE;
|
|
|
2478 dp_left->db_index[line_count_left] = dp_left->db_txt_start;
|
|
|
2479 if (mark)
|
|
|
2480 dp_left->db_index[line_count_left] |= DB_MARKED;
|
|
|
2481 mch_memmove((char *)dp_left + dp_left->db_txt_start,
|
|
|
2482 line, (size_t)len);
|
|
|
2483 ++line_count_left;
|
|
|
2484 }
|
|
|
2485
|
|
|
2486 if (db_idx < 0) /* left block is new */
|
|
|
2487 {
|
|
|
2488 lnum_left = lnum + 1;
|
|
|
2489 lnum_right = 0;
|
|
|
2490 }
|
|
|
2491 else /* right block is new */
|
|
|
2492 {
|
|
|
2493 lnum_left = 0;
|
|
|
2494 if (in_left)
|
|
|
2495 lnum_right = lnum + 2;
|
|
|
2496 else
|
|
|
2497 lnum_right = lnum + 1;
|
|
|
2498 }
|
|
|
2499 dp_left->db_line_count = line_count_left;
|
|
|
2500 dp_right->db_line_count = line_count_right;
|
|
|
2501
|
|
|
2502 /*
|
|
|
2503 * release the two data blocks
|
|
|
2504 * The new one (hp_new) already has a correct blocknumber.
|
|
|
2505 * The old one (hp, in ml_locked) gets a positive blocknumber if
|
|
|
2506 * we changed it and we are not editing a new file.
|
|
|
2507 */
|
|
|
2508 if (lines_moved || in_left)
|
|
|
2509 buf->b_ml.ml_flags |= ML_LOCKED_DIRTY;
|
|
|
2510 if (!newfile && db_idx >= 0 && in_left)
|
|
|
2511 buf->b_ml.ml_flags |= ML_LOCKED_POS;
|
|
|
2512 mf_put(mfp, hp_new, TRUE, FALSE);
|
|
|
2513
|
|
|
2514 /*
|
|
|
2515 * flush the old data block
|
|
|
2516 * set ml_locked_lineadd to 0, because the updating of the
|
|
|
2517 * pointer blocks is done below
|
|
|
2518 */
|
|
|
2519 lineadd = buf->b_ml.ml_locked_lineadd;
|
|
|
2520 buf->b_ml.ml_locked_lineadd = 0;
|
|
|
2521 ml_find_line(buf, (linenr_T)0, ML_FLUSH); /* flush data block */
|
|
|
2522
|
|
|
2523 /*
|
|
|
2524 * update pointer blocks for the new data block
|
|
|
2525 */
|
|
|
2526 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0;
|
|
|
2527 --stack_idx)
|
|
|
2528 {
|
|
|
2529 ip = &(buf->b_ml.ml_stack[stack_idx]);
|
|
|
2530 pb_idx = ip->ip_index;
|
|
|
2531 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL)
|
|
|
2532 return FAIL;
|
|
|
2533 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */
|
|
|
2534 if (pp->pb_id != PTR_ID)
|
|
|
2535 {
|
|
|
2536 EMSG(_("E317: pointer block id wrong 3"));
|
|
|
2537 mf_put(mfp, hp, FALSE, FALSE);
|
|
|
2538 return FAIL;
|
|
|
2539 }
|
|
|
2540 /*
|
|
|
2541 * TODO: If the pointer block is full and we are adding at the end
|
|
|
2542 * try to insert in front of the next block
|
|
|
2543 */
|
|
|
2544 /* block not full, add one entry */
|
|
|
2545 if (pp->pb_count < pp->pb_count_max)
|
|
|
2546 {
|
|
|
2547 if (pb_idx + 1 < (int)pp->pb_count)
|
|
|
2548 mch_memmove(&pp->pb_pointer[pb_idx + 2],
|
|
|
2549 &pp->pb_pointer[pb_idx + 1],
|
|
|
2550 (size_t)(pp->pb_count - pb_idx - 1) * sizeof(PTR_EN));
|
|
|
2551 ++pp->pb_count;
|
|
|
2552 pp->pb_pointer[pb_idx].pe_line_count = line_count_left;
|
|
|
2553 pp->pb_pointer[pb_idx].pe_bnum = bnum_left;
|
|
|
2554 pp->pb_pointer[pb_idx].pe_page_count = page_count_left;
|
|
|
2555 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right;
|
|
|
2556 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right;
|
|
|
2557 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right;
|
|
|
2558
|
|
|
2559 if (lnum_left != 0)
|
|
|
2560 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left;
|
|
|
2561 if (lnum_right != 0)
|
|
|
2562 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right;
|
|
|
2563
|
|
|
2564 mf_put(mfp, hp, TRUE, FALSE);
|
|
|
2565 buf->b_ml.ml_stack_top = stack_idx + 1; /* truncate stack */
|
|
|
2566
|
|
|
2567 if (lineadd)
|
|
|
2568 {
|
|
|
2569 --(buf->b_ml.ml_stack_top);
|
|
1167
|
2570 /* fix line count for rest of blocks in the stack */
|
|
7
|
2571 ml_lineadd(buf, lineadd);
|
|
|
2572 /* fix stack itself */
|
|
|
2573 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high +=
|
|
|
2574 lineadd;
|
|
|
2575 ++(buf->b_ml.ml_stack_top);
|
|
|
2576 }
|
|
|
2577
|
|
|
2578 /*
|
|
|
2579 * We are finished, break the loop here.
|
|
|
2580 */
|
|
|
2581 break;
|
|
|
2582 }
|
|
|
2583 else /* pointer block full */
|
|
|
2584 {
|
|
|
2585 /*
|
|
|
2586 * split the pointer block
|
|
|
2587 * allocate a new pointer block
|
|
|
2588 * move some of the pointer into the new block
|
|
|
2589 * prepare for updating the parent block
|
|
|
2590 */
|
|
|
2591 for (;;) /* do this twice when splitting block 1 */
|
|
|
2592 {
|
|
|
2593 hp_new = ml_new_ptr(mfp);
|
|
|
2594 if (hp_new == NULL) /* TODO: try to fix tree */
|
|
|
2595 return FAIL;
|
|
|
2596 pp_new = (PTR_BL *)(hp_new->bh_data);
|
|
|
2597
|
|
|
2598 if (hp->bh_bnum != 1)
|
|
|
2599 break;
|
|
|
2600
|
|
|
2601 /*
|
|
|
2602 * if block 1 becomes full the tree is given an extra level
|
|
|
2603 * The pointers from block 1 are moved into the new block.
|
|
|
2604 * block 1 is updated to point to the new block
|
|
|
2605 * then continue to split the new block
|
|
|
2606 */
|
|
|
2607 mch_memmove(pp_new, pp, (size_t)page_size);
|
|
|
2608 pp->pb_count = 1;
|
|
|
2609 pp->pb_pointer[0].pe_bnum = hp_new->bh_bnum;
|
|
|
2610 pp->pb_pointer[0].pe_line_count = buf->b_ml.ml_line_count;
|
|
|
2611 pp->pb_pointer[0].pe_old_lnum = 1;
|
|
|
2612 pp->pb_pointer[0].pe_page_count = 1;
|
|
|
2613 mf_put(mfp, hp, TRUE, FALSE); /* release block 1 */
|
|
|
2614 hp = hp_new; /* new block is to be split */
|
|
|
2615 pp = pp_new;
|
|
|
2616 CHECK(stack_idx != 0, _("stack_idx should be 0"));
|
|
|
2617 ip->ip_index = 0;
|
|
|
2618 ++stack_idx; /* do block 1 again later */
|
|
|
2619 }
|
|
|
2620 /*
|
|
|
2621 * move the pointers after the current one to the new block
|
|
|
2622 * If there are none, the new entry will be in the new block.
|
|
|
2623 */
|
|
|
2624 total_moved = pp->pb_count - pb_idx - 1;
|
|
|
2625 if (total_moved)
|
|
|
2626 {
|
|
|
2627 mch_memmove(&pp_new->pb_pointer[0],
|
|
|
2628 &pp->pb_pointer[pb_idx + 1],
|
|
|
2629 (size_t)(total_moved) * sizeof(PTR_EN));
|
|
|
2630 pp_new->pb_count = total_moved;
|
|
|
2631 pp->pb_count -= total_moved - 1;
|
|
|
2632 pp->pb_pointer[pb_idx + 1].pe_bnum = bnum_right;
|
|
|
2633 pp->pb_pointer[pb_idx + 1].pe_line_count = line_count_right;
|
|
|
2634 pp->pb_pointer[pb_idx + 1].pe_page_count = page_count_right;
|
|
|
2635 if (lnum_right)
|
|
|
2636 pp->pb_pointer[pb_idx + 1].pe_old_lnum = lnum_right;
|
|
|
2637 }
|
|
|
2638 else
|
|
|
2639 {
|
|
|
2640 pp_new->pb_count = 1;
|
|
|
2641 pp_new->pb_pointer[0].pe_bnum = bnum_right;
|
|
|
2642 pp_new->pb_pointer[0].pe_line_count = line_count_right;
|
|
|
2643 pp_new->pb_pointer[0].pe_page_count = page_count_right;
|
|
|
2644 pp_new->pb_pointer[0].pe_old_lnum = lnum_right;
|
|
|
2645 }
|
|
|
2646 pp->pb_pointer[pb_idx].pe_bnum = bnum_left;
|
|
|
2647 pp->pb_pointer[pb_idx].pe_line_count = line_count_left;
|
|
|
2648 pp->pb_pointer[pb_idx].pe_page_count = page_count_left;
|
|
|
2649 if (lnum_left)
|
|
|
2650 pp->pb_pointer[pb_idx].pe_old_lnum = lnum_left;
|
|
|
2651 lnum_left = 0;
|
|
|
2652 lnum_right = 0;
|
|
|
2653
|
|
|
2654 /*
|
|
|
2655 * recompute line counts
|
|
|
2656 */
|
|
|
2657 line_count_right = 0;
|
|
|
2658 for (i = 0; i < (int)pp_new->pb_count; ++i)
|
|
|
2659 line_count_right += pp_new->pb_pointer[i].pe_line_count;
|
|
|
2660 line_count_left = 0;
|
|
|
2661 for (i = 0; i < (int)pp->pb_count; ++i)
|
|
|
2662 line_count_left += pp->pb_pointer[i].pe_line_count;
|
|
|
2663
|
|
|
2664 bnum_left = hp->bh_bnum;
|
|
|
2665 bnum_right = hp_new->bh_bnum;
|
|
|
2666 page_count_left = 1;
|
|
|
2667 page_count_right = 1;
|
|
|
2668 mf_put(mfp, hp, TRUE, FALSE);
|
|
|
2669 mf_put(mfp, hp_new, TRUE, FALSE);
|
|
|
2670 }
|
|
|
2671 }
|
|
|
2672
|
|
|
2673 /*
|
|
|
2674 * Safety check: fallen out of for loop?
|
|
|
2675 */
|
|
|
2676 if (stack_idx < 0)
|
|
|
2677 {
|
|
|
2678 EMSG(_("E318: Updated too many blocks?"));
|
|
|
2679 buf->b_ml.ml_stack_top = 0; /* invalidate stack */
|
|
|
2680 }
|
|
|
2681 }
|
|
|
2682
|
|
|
2683 #ifdef FEAT_BYTEOFF
|
|
|
2684 /* The line was inserted below 'lnum' */
|
|
|
2685 ml_updatechunk(buf, lnum + 1, (long)len, ML_CHNK_ADDLINE);
|
|
|
2686 #endif
|
|
|
2687 #ifdef FEAT_NETBEANS_INTG
|
|
|
2688 if (usingNetbeans)
|
|
|
2689 {
|
|
|
2690 if (STRLEN(line) > 0)
|
|
835
|
2691 netbeans_inserted(buf, lnum+1, (colnr_T)0, line, (int)STRLEN(line));
|
|
34
|
2692 netbeans_inserted(buf, lnum+1, (colnr_T)STRLEN(line),
|
|
7
|
2693 (char_u *)"\n", 1);
|
|
|
2694 }
|
|
|
2695 #endif
|
|
|
2696 return OK;
|
|
|
2697 }
|
|
|
2698
|
|
|
2699 /*
|
|
625
|
2700 * Replace line lnum, with buffering, in current buffer.
|
|
7
|
2701 *
|
|
720
|
2702 * If "copy" is TRUE, make a copy of the line, otherwise the line has been
|
|
7
|
2703 * copied to allocated memory already.
|
|
|
2704 *
|
|
|
2705 * Check: The caller of this function should probably also call
|
|
|
2706 * changed_lines(), unless update_screen(NOT_VALID) is used.
|
|
|
2707 *
|
|
|
2708 * return FAIL for failure, OK otherwise
|
|
|
2709 */
|
|
|
2710 int
|
|
|
2711 ml_replace(lnum, line, copy)
|
|
|
2712 linenr_T lnum;
|
|
|
2713 char_u *line;
|
|
|
2714 int copy;
|
|
|
2715 {
|
|
|
2716 if (line == NULL) /* just checking... */
|
|
|
2717 return FAIL;
|
|
|
2718
|
|
|
2719 /* When starting up, we might still need to create the memfile */
|
|
|
2720 if (curbuf->b_ml.ml_mfp == NULL && open_buffer(FALSE, NULL) == FAIL)
|
|
|
2721 return FAIL;
|
|
|
2722
|
|
|
2723 if (copy && (line = vim_strsave(line)) == NULL) /* allocate memory */
|
|
|
2724 return FAIL;
|
|
|
2725 #ifdef FEAT_NETBEANS_INTG
|
|
|
2726 if (usingNetbeans)
|
|
|
2727 {
|
|
|
2728 netbeans_removed(curbuf, lnum, 0, (long)STRLEN(ml_get(lnum)));
|
|
835
|
2729 netbeans_inserted(curbuf, lnum, 0, line, (int)STRLEN(line));
|
|
7
|
2730 }
|
|
|
2731 #endif
|
|
|
2732 if (curbuf->b_ml.ml_line_lnum != lnum) /* other line buffered */
|
|
|
2733 ml_flush_line(curbuf); /* flush it */
|
|
|
2734 else if (curbuf->b_ml.ml_flags & ML_LINE_DIRTY) /* same line allocated */
|
|
|
2735 vim_free(curbuf->b_ml.ml_line_ptr); /* free it */
|
|
|
2736 curbuf->b_ml.ml_line_ptr = line;
|
|
|
2737 curbuf->b_ml.ml_line_lnum = lnum;
|
|
|
2738 curbuf->b_ml.ml_flags = (curbuf->b_ml.ml_flags | ML_LINE_DIRTY) & ~ML_EMPTY;
|
|
|
2739
|
|
|
2740 return OK;
|
|
|
2741 }
|
|
|
2742
|
|
|
2743 /*
|
|
625
|
2744 * Delete line 'lnum' in the current buffer.
|
|
7
|
2745 *
|
|
|
2746 * Check: The caller of this function should probably also call
|
|
|
2747 * deleted_lines() after this.
|
|
|
2748 *
|
|
|
2749 * return FAIL for failure, OK otherwise
|
|
|
2750 */
|
|
|
2751 int
|
|
|
2752 ml_delete(lnum, message)
|
|
|
2753 linenr_T lnum;
|
|
|
2754 int message;
|
|
|
2755 {
|
|
|
2756 ml_flush_line(curbuf);
|
|
|
2757 return ml_delete_int(curbuf, lnum, message);
|
|
|
2758 }
|
|
|
2759
|
|
|
2760 static int
|
|
|
2761 ml_delete_int(buf, lnum, message)
|
|
|
2762 buf_T *buf;
|
|
|
2763 linenr_T lnum;
|
|
|
2764 int message;
|
|
|
2765 {
|
|
|
2766 bhdr_T *hp;
|
|
|
2767 memfile_T *mfp;
|
|
|
2768 DATA_BL *dp;
|
|
|
2769 PTR_BL *pp;
|
|
|
2770 infoptr_T *ip;
|
|
|
2771 int count; /* number of entries in block */
|
|
|
2772 int idx;
|
|
|
2773 int stack_idx;
|
|
|
2774 int text_start;
|
|
|
2775 int line_start;
|
|
|
2776 long line_size;
|
|
|
2777 int i;
|
|
|
2778
|
|
|
2779 if (lnum < 1 || lnum > buf->b_ml.ml_line_count)
|
|
|
2780 return FAIL;
|
|
|
2781
|
|
|
2782 if (lowest_marked && lowest_marked > lnum)
|
|
|
2783 lowest_marked--;
|
|
|
2784
|
|
|
2785 /*
|
|
|
2786 * If the file becomes empty the last line is replaced by an empty line.
|
|
|
2787 */
|
|
|
2788 if (buf->b_ml.ml_line_count == 1) /* file becomes empty */
|
|
|
2789 {
|
|
|
2790 if (message
|
|
|
2791 #ifdef FEAT_NETBEANS_INTG
|
|
|
2792 && !netbeansSuppressNoLines
|
|
|
2793 #endif
|
|
|
2794 )
|
|
680
|
2795 set_keep_msg((char_u *)_(no_lines_msg), 0);
|
|
|
2796
|
|
7
|
2797 /* FEAT_BYTEOFF already handled in there, dont worry 'bout it below */
|
|
|
2798 i = ml_replace((linenr_T)1, (char_u *)"", TRUE);
|
|
|
2799 buf->b_ml.ml_flags |= ML_EMPTY;
|
|
|
2800
|
|
|
2801 return i;
|
|
|
2802 }
|
|
|
2803
|
|
|
2804 /*
|
|
|
2805 * find the data block containing the line
|
|
|
2806 * This also fills the stack with the blocks from the root to the data block
|
|
|
2807 * This also releases any locked block.
|
|
|
2808 */
|
|
|
2809 mfp = buf->b_ml.ml_mfp;
|
|
|
2810 if (mfp == NULL)
|
|
|
2811 return FAIL;
|
|
|
2812
|
|
|
2813 if ((hp = ml_find_line(buf, lnum, ML_DELETE)) == NULL)
|
|
|
2814 return FAIL;
|
|
|
2815
|
|
|
2816 dp = (DATA_BL *)(hp->bh_data);
|
|
|
2817 /* compute line count before the delete */
|
|
|
2818 count = (long)(buf->b_ml.ml_locked_high)
|
|
|
2819 - (long)(buf->b_ml.ml_locked_low) + 2;
|
|
|
2820 idx = lnum - buf->b_ml.ml_locked_low;
|
|
|
2821
|
|
|
2822 --buf->b_ml.ml_line_count;
|
|
|
2823
|
|
|
2824 line_start = ((dp->db_index[idx]) & DB_INDEX_MASK);
|
|
|
2825 if (idx == 0) /* first line in block, text at the end */
|
|
|
2826 line_size = dp->db_txt_end - line_start;
|
|
|
2827 else
|
|
|
2828 line_size = ((dp->db_index[idx - 1]) & DB_INDEX_MASK) - line_start;
|
|
|
2829
|
|
|
2830 #ifdef FEAT_NETBEANS_INTG
|
|
|
2831 if (usingNetbeans)
|
|
34
|
2832 netbeans_removed(buf, lnum, 0, (long)line_size);
|
|
7
|
2833 #endif
|
|
|
2834
|
|
|
2835 /*
|
|
|
2836 * special case: If there is only one line in the data block it becomes empty.
|
|
|
2837 * Then we have to remove the entry, pointing to this data block, from the
|
|
|
2838 * pointer block. If this pointer block also becomes empty, we go up another
|
|
|
2839 * block, and so on, up to the root if necessary.
|
|
|
2840 * The line counts in the pointer blocks have already been adjusted by
|
|
|
2841 * ml_find_line().
|
|
|
2842 */
|
|
|
2843 if (count == 1)
|
|
|
2844 {
|
|
|
2845 mf_free(mfp, hp); /* free the data block */
|
|
|
2846 buf->b_ml.ml_locked = NULL;
|
|
|
2847
|
|
|
2848 for (stack_idx = buf->b_ml.ml_stack_top - 1; stack_idx >= 0; --stack_idx)
|
|
|
2849 {
|
|
|
2850 buf->b_ml.ml_stack_top = 0; /* stack is invalid when failing */
|
|
|
2851 ip = &(buf->b_ml.ml_stack[stack_idx]);
|
|
|
2852 idx = ip->ip_index;
|
|
|
2853 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL)
|
|
|
2854 return FAIL;
|
|
|
2855 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */
|
|
|
2856 if (pp->pb_id != PTR_ID)
|
|
|
2857 {
|
|
|
2858 EMSG(_("E317: pointer block id wrong 4"));
|
|
|
2859 mf_put(mfp, hp, FALSE, FALSE);
|
|
|
2860 return FAIL;
|
|
|
2861 }
|
|
|
2862 count = --(pp->pb_count);
|
|
|
2863 if (count == 0) /* the pointer block becomes empty! */
|
|
|
2864 mf_free(mfp, hp);
|
|
|
2865 else
|
|
|
2866 {
|
|
|
2867 if (count != idx) /* move entries after the deleted one */
|
|
|
2868 mch_memmove(&pp->pb_pointer[idx], &pp->pb_pointer[idx + 1],
|
|
|
2869 (size_t)(count - idx) * sizeof(PTR_EN));
|
|
|
2870 mf_put(mfp, hp, TRUE, FALSE);
|
|
|
2871
|
|
|
2872 buf->b_ml.ml_stack_top = stack_idx; /* truncate stack */
|
|
1167
|
2873 /* fix line count for rest of blocks in the stack */
|
|
|
2874 if (buf->b_ml.ml_locked_lineadd != 0)
|
|
7
|
2875 {
|
|
|
2876 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd);
|
|
|
2877 buf->b_ml.ml_stack[buf->b_ml.ml_stack_top].ip_high +=
|
|
1167
|
2878 buf->b_ml.ml_locked_lineadd;
|
|
7
|
2879 }
|
|
|
2880 ++(buf->b_ml.ml_stack_top);
|
|
|
2881
|
|
|
2882 break;
|
|
|
2883 }
|
|
|
2884 }
|
|
|
2885 CHECK(stack_idx < 0, _("deleted block 1?"));
|
|
|
2886 }
|
|
|
2887 else
|
|
|
2888 {
|
|
|
2889 /*
|
|
|
2890 * delete the text by moving the next lines forwards
|
|
|
2891 */
|
|
|
2892 text_start = dp->db_txt_start;
|
|
|
2893 mch_memmove((char *)dp + text_start + line_size,
|
|
|
2894 (char *)dp + text_start, (size_t)(line_start - text_start));
|
|
|
2895
|
|
|
2896 /*
|
|
|
2897 * delete the index by moving the next indexes backwards
|
|
|
2898 * Adjust the indexes for the text movement.
|
|
|
2899 */
|
|
|
2900 for (i = idx; i < count - 1; ++i)
|
|
|
2901 dp->db_index[i] = dp->db_index[i + 1] + line_size;
|
|
|
2902
|
|
|
2903 dp->db_free += line_size + INDEX_SIZE;
|
|
|
2904 dp->db_txt_start += line_size;
|
|
|
2905 --(dp->db_line_count);
|
|
|
2906
|
|
|
2907 /*
|
|
|
2908 * mark the block dirty and make sure it is in the file (for recovery)
|
|
|
2909 */
|
|
|
2910 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS);
|
|
|
2911 }
|
|
|
2912
|
|
|
2913 #ifdef FEAT_BYTEOFF
|
|
|
2914 ml_updatechunk(buf, lnum, line_size, ML_CHNK_DELLINE);
|
|
|
2915 #endif
|
|
|
2916 return OK;
|
|
|
2917 }
|
|
|
2918
|
|
|
2919 /*
|
|
|
2920 * set the B_MARKED flag for line 'lnum'
|
|
|
2921 */
|
|
|
2922 void
|
|
|
2923 ml_setmarked(lnum)
|
|
|
2924 linenr_T lnum;
|
|
|
2925 {
|
|
|
2926 bhdr_T *hp;
|
|
|
2927 DATA_BL *dp;
|
|
|
2928 /* invalid line number */
|
|
|
2929 if (lnum < 1 || lnum > curbuf->b_ml.ml_line_count
|
|
|
2930 || curbuf->b_ml.ml_mfp == NULL)
|
|
|
2931 return; /* give error message? */
|
|
|
2932
|
|
|
2933 if (lowest_marked == 0 || lowest_marked > lnum)
|
|
|
2934 lowest_marked = lnum;
|
|
|
2935
|
|
|
2936 /*
|
|
|
2937 * find the data block containing the line
|
|
|
2938 * This also fills the stack with the blocks from the root to the data block
|
|
|
2939 * This also releases any locked block.
|
|
|
2940 */
|
|
|
2941 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL)
|
|
|
2942 return; /* give error message? */
|
|
|
2943
|
|
|
2944 dp = (DATA_BL *)(hp->bh_data);
|
|
|
2945 dp->db_index[lnum - curbuf->b_ml.ml_locked_low] |= DB_MARKED;
|
|
|
2946 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY;
|
|
|
2947 }
|
|
|
2948
|
|
|
2949 /*
|
|
|
2950 * find the first line with its B_MARKED flag set
|
|
|
2951 */
|
|
|
2952 linenr_T
|
|
|
2953 ml_firstmarked()
|
|
|
2954 {
|
|
|
2955 bhdr_T *hp;
|
|
|
2956 DATA_BL *dp;
|
|
|
2957 linenr_T lnum;
|
|
|
2958 int i;
|
|
|
2959
|
|
|
2960 if (curbuf->b_ml.ml_mfp == NULL)
|
|
|
2961 return (linenr_T) 0;
|
|
|
2962
|
|
|
2963 /*
|
|
|
2964 * The search starts with lowest_marked line. This is the last line where
|
|
|
2965 * a mark was found, adjusted by inserting/deleting lines.
|
|
|
2966 */
|
|
|
2967 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; )
|
|
|
2968 {
|
|
|
2969 /*
|
|
|
2970 * Find the data block containing the line.
|
|
|
2971 * This also fills the stack with the blocks from the root to the data
|
|
|
2972 * block This also releases any locked block.
|
|
|
2973 */
|
|
|
2974 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL)
|
|
|
2975 return (linenr_T)0; /* give error message? */
|
|
|
2976
|
|
|
2977 dp = (DATA_BL *)(hp->bh_data);
|
|
|
2978
|
|
|
2979 for (i = lnum - curbuf->b_ml.ml_locked_low;
|
|
|
2980 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum)
|
|
|
2981 if ((dp->db_index[i]) & DB_MARKED)
|
|
|
2982 {
|
|
|
2983 (dp->db_index[i]) &= DB_INDEX_MASK;
|
|
|
2984 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY;
|
|
|
2985 lowest_marked = lnum + 1;
|
|
|
2986 return lnum;
|
|
|
2987 }
|
|
|
2988 }
|
|
|
2989
|
|
|
2990 return (linenr_T) 0;
|
|
|
2991 }
|
|
|
2992
|
|
|
2993 #if 0 /* not used */
|
|
|
2994 /*
|
|
|
2995 * return TRUE if line 'lnum' has a mark
|
|
|
2996 */
|
|
|
2997 int
|
|
|
2998 ml_has_mark(lnum)
|
|
|
2999 linenr_T lnum;
|
|
|
3000 {
|
|
|
3001 bhdr_T *hp;
|
|
|
3002 DATA_BL *dp;
|
|
|
3003
|
|
|
3004 if (curbuf->b_ml.ml_mfp == NULL
|
|
|
3005 || (hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL)
|
|
|
3006 return FALSE;
|
|
|
3007
|
|
|
3008 dp = (DATA_BL *)(hp->bh_data);
|
|
|
3009 return (int)((dp->db_index[lnum - curbuf->b_ml.ml_locked_low]) & DB_MARKED);
|
|
|
3010 }
|
|
|
3011 #endif
|
|
|
3012
|
|
|
3013 /*
|
|
|
3014 * clear all DB_MARKED flags
|
|
|
3015 */
|
|
|
3016 void
|
|
|
3017 ml_clearmarked()
|
|
|
3018 {
|
|
|
3019 bhdr_T *hp;
|
|
|
3020 DATA_BL *dp;
|
|
|
3021 linenr_T lnum;
|
|
|
3022 int i;
|
|
|
3023
|
|
|
3024 if (curbuf->b_ml.ml_mfp == NULL) /* nothing to do */
|
|
|
3025 return;
|
|
|
3026
|
|
|
3027 /*
|
|
|
3028 * The search starts with line lowest_marked.
|
|
|
3029 */
|
|
|
3030 for (lnum = lowest_marked; lnum <= curbuf->b_ml.ml_line_count; )
|
|
|
3031 {
|
|
|
3032 /*
|
|
|
3033 * Find the data block containing the line.
|
|
|
3034 * This also fills the stack with the blocks from the root to the data
|
|
|
3035 * block and releases any locked block.
|
|
|
3036 */
|
|
|
3037 if ((hp = ml_find_line(curbuf, lnum, ML_FIND)) == NULL)
|
|
|
3038 return; /* give error message? */
|
|
|
3039
|
|
|
3040 dp = (DATA_BL *)(hp->bh_data);
|
|
|
3041
|
|
|
3042 for (i = lnum - curbuf->b_ml.ml_locked_low;
|
|
|
3043 lnum <= curbuf->b_ml.ml_locked_high; ++i, ++lnum)
|
|
|
3044 if ((dp->db_index[i]) & DB_MARKED)
|
|
|
3045 {
|
|
|
3046 (dp->db_index[i]) &= DB_INDEX_MASK;
|
|
|
3047 curbuf->b_ml.ml_flags |= ML_LOCKED_DIRTY;
|
|
|
3048 }
|
|
|
3049 }
|
|
|
3050
|
|
|
3051 lowest_marked = 0;
|
|
|
3052 return;
|
|
|
3053 }
|
|
|
3054
|
|
|
3055 /*
|
|
|
3056 * flush ml_line if necessary
|
|
|
3057 */
|
|
|
3058 static void
|
|
|
3059 ml_flush_line(buf)
|
|
|
3060 buf_T *buf;
|
|
|
3061 {
|
|
|
3062 bhdr_T *hp;
|
|
|
3063 DATA_BL *dp;
|
|
|
3064 linenr_T lnum;
|
|
|
3065 char_u *new_line;
|
|
|
3066 char_u *old_line;
|
|
|
3067 colnr_T new_len;
|
|
|
3068 int old_len;
|
|
|
3069 int extra;
|
|
|
3070 int idx;
|
|
|
3071 int start;
|
|
|
3072 int count;
|
|
|
3073 int i;
|
|
|
3074
|
|
|
3075 if (buf->b_ml.ml_line_lnum == 0 || buf->b_ml.ml_mfp == NULL)
|
|
|
3076 return; /* nothing to do */
|
|
|
3077
|
|
|
3078 if (buf->b_ml.ml_flags & ML_LINE_DIRTY)
|
|
|
3079 {
|
|
|
3080 lnum = buf->b_ml.ml_line_lnum;
|
|
|
3081 new_line = buf->b_ml.ml_line_ptr;
|
|
|
3082
|
|
|
3083 hp = ml_find_line(buf, lnum, ML_FIND);
|
|
|
3084 if (hp == NULL)
|
|
|
3085 EMSGN(_("E320: Cannot find line %ld"), lnum);
|
|
|
3086 else
|
|
|
3087 {
|
|
|
3088 dp = (DATA_BL *)(hp->bh_data);
|
|
|
3089 idx = lnum - buf->b_ml.ml_locked_low;
|
|
|
3090 start = ((dp->db_index[idx]) & DB_INDEX_MASK);
|
|
|
3091 old_line = (char_u *)dp + start;
|
|
|
3092 if (idx == 0) /* line is last in block */
|
|
|
3093 old_len = dp->db_txt_end - start;
|
|
|
3094 else /* text of previous line follows */
|
|
|
3095 old_len = (dp->db_index[idx - 1] & DB_INDEX_MASK) - start;
|
|
|
3096 new_len = (colnr_T)STRLEN(new_line) + 1;
|
|
|
3097 extra = new_len - old_len; /* negative if lines gets smaller */
|
|
|
3098
|
|
|
3099 /*
|
|
|
3100 * if new line fits in data block, replace directly
|
|
|
3101 */
|
|
|
3102 if ((int)dp->db_free >= extra)
|
|
|
3103 {
|
|
|
3104 /* if the length changes and there are following lines */
|
|
|
3105 count = buf->b_ml.ml_locked_high - buf->b_ml.ml_locked_low + 1;
|
|
|
3106 if (extra != 0 && idx < count - 1)
|
|
|
3107 {
|
|
|
3108 /* move text of following lines */
|
|
|
3109 mch_memmove((char *)dp + dp->db_txt_start - extra,
|
|
|
3110 (char *)dp + dp->db_txt_start,
|
|
|
3111 (size_t)(start - dp->db_txt_start));
|
|
|
3112
|
|
|
3113 /* adjust pointers of this and following lines */
|
|
|
3114 for (i = idx + 1; i < count; ++i)
|
|
|
3115 dp->db_index[i] -= extra;
|
|
|
3116 }
|
|
|
3117 dp->db_index[idx] -= extra;
|
|
|
3118
|
|
|
3119 /* adjust free space */
|
|
|
3120 dp->db_free -= extra;
|
|
|
3121 dp->db_txt_start -= extra;
|
|
|
3122
|
|
|
3123 /* copy new line into the data block */
|
|
|
3124 mch_memmove(old_line - extra, new_line, (size_t)new_len);
|
|
|
3125 buf->b_ml.ml_flags |= (ML_LOCKED_DIRTY | ML_LOCKED_POS);
|
|
|
3126 #ifdef FEAT_BYTEOFF
|
|
|
3127 /* The else case is already covered by the insert and delete */
|
|
|
3128 ml_updatechunk(buf, lnum, (long)extra, ML_CHNK_UPDLINE);
|
|
|
3129 #endif
|
|
|
3130 }
|
|
|
3131 else
|
|
|
3132 {
|
|
|
3133 /*
|
|
|
3134 * Cannot do it in one data block: Delete and append.
|
|
|
3135 * Append first, because ml_delete_int() cannot delete the
|
|
|
3136 * last line in a buffer, which causes trouble for a buffer
|
|
|
3137 * that has only one line.
|
|
|
3138 * Don't forget to copy the mark!
|
|
|
3139 */
|
|
|
3140 /* How about handling errors??? */
|
|
|
3141 (void)ml_append_int(buf, lnum, new_line, new_len, FALSE,
|
|
|
3142 (dp->db_index[idx] & DB_MARKED));
|
|
|
3143 (void)ml_delete_int(buf, lnum, FALSE);
|
|
|
3144 }
|
|
|
3145 }
|
|
|
3146 vim_free(new_line);
|
|
|
3147 }
|
|
|
3148
|
|
|
3149 buf->b_ml.ml_line_lnum = 0;
|
|
|
3150 }
|
|
|
3151
|
|
|
3152 /*
|
|
|
3153 * create a new, empty, data block
|
|
|
3154 */
|
|
|
3155 static bhdr_T *
|
|
|
3156 ml_new_data(mfp, negative, page_count)
|
|
|
3157 memfile_T *mfp;
|
|
|
3158 int negative;
|
|
|
3159 int page_count;
|
|
|
3160 {
|
|
|
3161 bhdr_T *hp;
|
|
|
3162 DATA_BL *dp;
|
|
|
3163
|
|
|
3164 if ((hp = mf_new(mfp, negative, page_count)) == NULL)
|
|
|
3165 return NULL;
|
|
|
3166
|
|
|
3167 dp = (DATA_BL *)(hp->bh_data);
|
|
|
3168 dp->db_id = DATA_ID;
|
|
|
3169 dp->db_txt_start = dp->db_txt_end = page_count * mfp->mf_page_size;
|
|
|
3170 dp->db_free = dp->db_txt_start - HEADER_SIZE;
|
|
|
3171 dp->db_line_count = 0;
|
|
|
3172
|
|
|
3173 return hp;
|
|
|
3174 }
|
|
|
3175
|
|
|
3176 /*
|
|
|
3177 * create a new, empty, pointer block
|
|
|
3178 */
|
|
|
3179 static bhdr_T *
|
|
|
3180 ml_new_ptr(mfp)
|
|
|
3181 memfile_T *mfp;
|
|
|
3182 {
|
|
|
3183 bhdr_T *hp;
|
|
|
3184 PTR_BL *pp;
|
|
|
3185
|
|
|
3186 if ((hp = mf_new(mfp, FALSE, 1)) == NULL)
|
|
|
3187 return NULL;
|
|
|
3188
|
|
|
3189 pp = (PTR_BL *)(hp->bh_data);
|
|
|
3190 pp->pb_id = PTR_ID;
|
|
|
3191 pp->pb_count = 0;
|
|
|
3192 pp->pb_count_max = (short_u)((mfp->mf_page_size - sizeof(PTR_BL)) / sizeof(PTR_EN) + 1);
|
|
|
3193
|
|
|
3194 return hp;
|
|
|
3195 }
|
|
|
3196
|
|
|
3197 /*
|
|
|
3198 * lookup line 'lnum' in a memline
|
|
|
3199 *
|
|
|
3200 * action: if ML_DELETE or ML_INSERT the line count is updated while searching
|
|
|
3201 * if ML_FLUSH only flush a locked block
|
|
|
3202 * if ML_FIND just find the line
|
|
|
3203 *
|
|
|
3204 * If the block was found it is locked and put in ml_locked.
|
|
|
3205 * The stack is updated to lead to the locked block. The ip_high field in
|
|
|
3206 * the stack is updated to reflect the last line in the block AFTER the
|
|
|
3207 * insert or delete, also if the pointer block has not been updated yet. But
|
|
1167
|
3208 * if ml_locked != NULL ml_locked_lineadd must be added to ip_high.
|
|
7
|
3209 *
|
|
|
3210 * return: NULL for failure, pointer to block header otherwise
|
|
|
3211 */
|
|
|
3212 static bhdr_T *
|
|
|
3213 ml_find_line(buf, lnum, action)
|
|
|
3214 buf_T *buf;
|
|
|
3215 linenr_T lnum;
|
|
|
3216 int action;
|
|
|
3217 {
|
|
|
3218 DATA_BL *dp;
|
|
|
3219 PTR_BL *pp;
|
|
|
3220 infoptr_T *ip;
|
|
|
3221 bhdr_T *hp;
|
|
|
3222 memfile_T *mfp;
|
|
|
3223 linenr_T t;
|
|
|
3224 blocknr_T bnum, bnum2;
|
|
|
3225 int dirty;
|
|
|
3226 linenr_T low, high;
|
|
|
3227 int top;
|
|
|
3228 int page_count;
|
|
|
3229 int idx;
|
|
|
3230
|
|
|
3231 mfp = buf->b_ml.ml_mfp;
|
|
|
3232
|
|
|
3233 /*
|
|
|
3234 * If there is a locked block check if the wanted line is in it.
|
|
|
3235 * If not, flush and release the locked block.
|
|
|
3236 * Don't do this for ML_INSERT_SAME, because the stack need to be updated.
|
|
|
3237 * Don't do this for ML_FLUSH, because we want to flush the locked block.
|
|
1066
|
3238 * Don't do this when 'swapfile' is reset, we want to load all the blocks.
|
|
7
|
3239 */
|
|
|
3240 if (buf->b_ml.ml_locked)
|
|
|
3241 {
|
|
1066
|
3242 if (ML_SIMPLE(action)
|
|
|
3243 && buf->b_ml.ml_locked_low <= lnum
|
|
|
3244 && buf->b_ml.ml_locked_high >= lnum
|
|
|
3245 && !mf_dont_release)
|
|
7
|
3246 {
|
|
1066
|
3247 /* remember to update pointer blocks and stack later */
|
|
7
|
3248 if (action == ML_INSERT)
|
|
|
3249 {
|
|
|
3250 ++(buf->b_ml.ml_locked_lineadd);
|
|
|
3251 ++(buf->b_ml.ml_locked_high);
|
|
|
3252 }
|
|
|
3253 else if (action == ML_DELETE)
|
|
|
3254 {
|
|
|
3255 --(buf->b_ml.ml_locked_lineadd);
|
|
|
3256 --(buf->b_ml.ml_locked_high);
|
|
|
3257 }
|
|
|
3258 return (buf->b_ml.ml_locked);
|
|
|
3259 }
|
|
|
3260
|
|
|
3261 mf_put(mfp, buf->b_ml.ml_locked, buf->b_ml.ml_flags & ML_LOCKED_DIRTY,
|
|
|
3262 buf->b_ml.ml_flags & ML_LOCKED_POS);
|
|
|
3263 buf->b_ml.ml_locked = NULL;
|
|
|
3264
|
|
1167
|
3265 /*
|
|
|
3266 * If lines have been added or deleted in the locked block, need to
|
|
|
3267 * update the line count in pointer blocks.
|
|
|
3268 */
|
|
|
3269 if (buf->b_ml.ml_locked_lineadd != 0)
|
|
7
|
3270 ml_lineadd(buf, buf->b_ml.ml_locked_lineadd);
|
|
|
3271 }
|
|
|
3272
|
|
|
3273 if (action == ML_FLUSH) /* nothing else to do */
|
|
|
3274 return NULL;
|
|
|
3275
|
|
|
3276 bnum = 1; /* start at the root of the tree */
|
|
|
3277 page_count = 1;
|
|
|
3278 low = 1;
|
|
|
3279 high = buf->b_ml.ml_line_count;
|
|
|
3280
|
|
|
3281 if (action == ML_FIND) /* first try stack entries */
|
|
|
3282 {
|
|
|
3283 for (top = buf->b_ml.ml_stack_top - 1; top >= 0; --top)
|
|
|
3284 {
|
|
|
3285 ip = &(buf->b_ml.ml_stack[top]);
|
|
|
3286 if (ip->ip_low <= lnum && ip->ip_high >= lnum)
|
|
|
3287 {
|
|
|
3288 bnum = ip->ip_bnum;
|
|
|
3289 low = ip->ip_low;
|
|
|
3290 high = ip->ip_high;
|
|
|
3291 buf->b_ml.ml_stack_top = top; /* truncate stack at prev entry */
|
|
|
3292 break;
|
|
|
3293 }
|
|
|
3294 }
|
|
|
3295 if (top < 0)
|
|
|
3296 buf->b_ml.ml_stack_top = 0; /* not found, start at the root */
|
|
|
3297 }
|
|
|
3298 else /* ML_DELETE or ML_INSERT */
|
|
|
3299 buf->b_ml.ml_stack_top = 0; /* start at the root */
|
|
|
3300
|
|
|
3301 /*
|
|
|
3302 * search downwards in the tree until a data block is found
|
|
|
3303 */
|
|
|
3304 for (;;)
|
|
|
3305 {
|
|
|
3306 if ((hp = mf_get(mfp, bnum, page_count)) == NULL)
|
|
|
3307 goto error_noblock;
|
|
|
3308
|
|
|
3309 /*
|
|
|
3310 * update high for insert/delete
|
|
|
3311 */
|
|
|
3312 if (action == ML_INSERT)
|
|
|
3313 ++high;
|
|
|
3314 else if (action == ML_DELETE)
|
|
|
3315 --high;
|
|
|
3316
|
|
|
3317 dp = (DATA_BL *)(hp->bh_data);
|
|
|
3318 if (dp->db_id == DATA_ID) /* data block */
|
|
|
3319 {
|
|
|
3320 buf->b_ml.ml_locked = hp;
|
|
|
3321 buf->b_ml.ml_locked_low = low;
|
|
|
3322 buf->b_ml.ml_locked_high = high;
|
|
|
3323 buf->b_ml.ml_locked_lineadd = 0;
|
|
|
3324 buf->b_ml.ml_flags &= ~(ML_LOCKED_DIRTY | ML_LOCKED_POS);
|
|
|
3325 return hp;
|
|
|
3326 }
|
|
|
3327
|
|
|
3328 pp = (PTR_BL *)(dp); /* must be pointer block */
|
|
|
3329 if (pp->pb_id != PTR_ID)
|
|
|
3330 {
|
|
|
3331 EMSG(_("E317: pointer block id wrong"));
|
|
|
3332 goto error_block;
|
|
|
3333 }
|
|
|
3334
|
|
|
3335 if ((top = ml_add_stack(buf)) < 0) /* add new entry to stack */
|
|
|
3336 goto error_block;
|
|
|
3337 ip = &(buf->b_ml.ml_stack[top]);
|
|
|
3338 ip->ip_bnum = bnum;
|
|
|
3339 ip->ip_low = low;
|
|
|
3340 ip->ip_high = high;
|
|
|
3341 ip->ip_index = -1; /* index not known yet */
|
|
|
3342
|
|
|
3343 dirty = FALSE;
|
|
|
3344 for (idx = 0; idx < (int)pp->pb_count; ++idx)
|
|
|
3345 {
|
|
|
3346 t = pp->pb_pointer[idx].pe_line_count;
|
|
|
3347 CHECK(t == 0, _("pe_line_count is zero"));
|
|
|
3348 if ((low += t) > lnum)
|
|
|
3349 {
|
|
|
3350 ip->ip_index = idx;
|
|
|
3351 bnum = pp->pb_pointer[idx].pe_bnum;
|
|
|
3352 page_count = pp->pb_pointer[idx].pe_page_count;
|
|
|
3353 high = low - 1;
|
|
|
3354 low -= t;
|
|
|
3355
|
|
|
3356 /*
|
|
|
3357 * a negative block number may have been changed
|
|
|
3358 */
|
|
|
3359 if (bnum < 0)
|
|
|
3360 {
|
|
|
3361 bnum2 = mf_trans_del(mfp, bnum);
|
|
|
3362 if (bnum != bnum2)
|
|
|
3363 {
|
|
|
3364 bnum = bnum2;
|
|
|
3365 pp->pb_pointer[idx].pe_bnum = bnum;
|
|
|
3366 dirty = TRUE;
|
|
|
3367 }
|
|
|
3368 }
|
|
|
3369
|
|
|
3370 break;
|
|
|
3371 }
|
|
|
3372 }
|
|
|
3373 if (idx >= (int)pp->pb_count) /* past the end: something wrong! */
|
|
|
3374 {
|
|
|
3375 if (lnum > buf->b_ml.ml_line_count)
|
|
|
3376 EMSGN(_("E322: line number out of range: %ld past the end"),
|
|
|
3377 lnum - buf->b_ml.ml_line_count);
|
|
|
3378
|
|
|
3379 else
|
|
|
3380 EMSGN(_("E323: line count wrong in block %ld"), bnum);
|
|
|
3381 goto error_block;
|
|
|
3382 }
|
|
|
3383 if (action == ML_DELETE)
|
|
|
3384 {
|
|
|
3385 pp->pb_pointer[idx].pe_line_count--;
|
|
|
3386 dirty = TRUE;
|
|
|
3387 }
|
|
|
3388 else if (action == ML_INSERT)
|
|
|
3389 {
|
|
|
3390 pp->pb_pointer[idx].pe_line_count++;
|
|
|
3391 dirty = TRUE;
|
|
|
3392 }
|
|
|
3393 mf_put(mfp, hp, dirty, FALSE);
|
|
|
3394 }
|
|
|
3395
|
|
|
3396 error_block:
|
|
|
3397 mf_put(mfp, hp, FALSE, FALSE);
|
|
|
3398 error_noblock:
|
|
|
3399 /*
|
|
|
3400 * If action is ML_DELETE or ML_INSERT we have to correct the tree for
|
|
|
3401 * the incremented/decremented line counts, because there won't be a line
|
|
|
3402 * inserted/deleted after all.
|
|
|
3403 */
|
|
|
3404 if (action == ML_DELETE)
|
|
|
3405 ml_lineadd(buf, 1);
|
|
|
3406 else if (action == ML_INSERT)
|
|
|
3407 ml_lineadd(buf, -1);
|
|
|
3408 buf->b_ml.ml_stack_top = 0;
|
|
|
3409 return NULL;
|
|
|
3410 }
|
|
|
3411
|
|
|
3412 /*
|
|
|
3413 * add an entry to the info pointer stack
|
|
|
3414 *
|
|
|
3415 * return -1 for failure, number of the new entry otherwise
|
|
|
3416 */
|
|
|
3417 static int
|
|
|
3418 ml_add_stack(buf)
|
|
|
3419 buf_T *buf;
|
|
|
3420 {
|
|
|
3421 int top;
|
|
|
3422 infoptr_T *newstack;
|
|
|
3423
|
|
|
3424 top = buf->b_ml.ml_stack_top;
|
|
|
3425
|
|
|
3426 /* may have to increase the stack size */
|
|
|
3427 if (top == buf->b_ml.ml_stack_size)
|
|
|
3428 {
|
|
|
3429 CHECK(top > 0, _("Stack size increases")); /* more than 5 levels??? */
|
|
|
3430
|
|
|
3431 newstack = (infoptr_T *)alloc((unsigned)sizeof(infoptr_T) *
|
|
|
3432 (buf->b_ml.ml_stack_size + STACK_INCR));
|
|
|
3433 if (newstack == NULL)
|
|
|
3434 return -1;
|
|
1624
|
3435 mch_memmove(newstack, buf->b_ml.ml_stack,
|
|
|
3436 (size_t)top * sizeof(infoptr_T));
|
|
7
|
3437 vim_free(buf->b_ml.ml_stack);
|
|
|
3438 buf->b_ml.ml_stack = newstack;
|
|
|
3439 buf->b_ml.ml_stack_size += STACK_INCR;
|
|
|
3440 }
|
|
|
3441
|
|
|
3442 buf->b_ml.ml_stack_top++;
|
|
|
3443 return top;
|
|
|
3444 }
|
|
|
3445
|
|
|
3446 /*
|
|
|
3447 * Update the pointer blocks on the stack for inserted/deleted lines.
|
|
|
3448 * The stack itself is also updated.
|
|
|
3449 *
|
|
|
3450 * When a insert/delete line action fails, the line is not inserted/deleted,
|
|
|
3451 * but the pointer blocks have already been updated. That is fixed here by
|
|
|
3452 * walking through the stack.
|
|
|
3453 *
|
|
|
3454 * Count is the number of lines added, negative if lines have been deleted.
|
|
|
3455 */
|
|
|
3456 static void
|
|
|
3457 ml_lineadd(buf, count)
|
|
|
3458 buf_T *buf;
|
|
|
3459 int count;
|
|
|
3460 {
|
|
|
3461 int idx;
|
|
|
3462 infoptr_T *ip;
|
|
|
3463 PTR_BL *pp;
|
|
|
3464 memfile_T *mfp = buf->b_ml.ml_mfp;
|
|
|
3465 bhdr_T *hp;
|
|
|
3466
|
|
|
3467 for (idx = buf->b_ml.ml_stack_top - 1; idx >= 0; --idx)
|
|
|
3468 {
|
|
|
3469 ip = &(buf->b_ml.ml_stack[idx]);
|
|
|
3470 if ((hp = mf_get(mfp, ip->ip_bnum, 1)) == NULL)
|
|
|
3471 break;
|
|
|
3472 pp = (PTR_BL *)(hp->bh_data); /* must be pointer block */
|
|
|
3473 if (pp->pb_id != PTR_ID)
|
|
|
3474 {
|
|
|
3475 mf_put(mfp, hp, FALSE, FALSE);
|
|
|
3476 EMSG(_("E317: pointer block id wrong 2"));
|
|
|
3477 break;
|
|
|
3478 }
|
|
|
3479 pp->pb_pointer[ip->ip_index].pe_line_count += count;
|
|
|
3480 ip->ip_high += count;
|
|
|
3481 mf_put(mfp, hp, TRUE, FALSE);
|
|
|
3482 }
|
|
|
3483 }
|
|
|
3484
|
|
594
|
3485 #ifdef HAVE_READLINK
|
|
|
3486 static int resolve_symlink __ARGS((char_u *fname, char_u *buf));
|
|
|
3487
|
|
|
3488 /*
|
|
|
3489 * Resolve a symlink in the last component of a file name.
|
|
|
3490 * Note that f_resolve() does it for every part of the path, we don't do that
|
|
|
3491 * here.
|
|
|
3492 * If it worked returns OK and the resolved link in "buf[MAXPATHL]".
|
|
|
3493 * Otherwise returns FAIL.
|
|
|
3494 */
|
|
|
3495 static int
|
|
|
3496 resolve_symlink(fname, buf)
|
|
|
3497 char_u *fname;
|
|
|
3498 char_u *buf;
|
|
|
3499 {
|
|
|
3500 char_u tmp[MAXPATHL];
|
|
|
3501 int ret;
|
|
|
3502 int depth = 0;
|
|
|
3503
|
|
|
3504 if (fname == NULL)
|
|
|
3505 return FAIL;
|
|
|
3506
|
|
|
3507 /* Put the result so far in tmp[], starting with the original name. */
|
|
|
3508 vim_strncpy(tmp, fname, MAXPATHL - 1);
|
|
|
3509
|
|
|
3510 for (;;)
|
|
|
3511 {
|
|
|
3512 /* Limit symlink depth to 100, catch recursive loops. */
|
|
|
3513 if (++depth == 100)
|
|
|
3514 {
|
|
|
3515 EMSG2(_("E773: Symlink loop for \"%s\""), fname);
|
|
|
3516 return FAIL;
|
|
|
3517 }
|
|
|
3518
|
|
|
3519 ret = readlink((char *)tmp, (char *)buf, MAXPATHL - 1);
|
|
|
3520 if (ret <= 0)
|
|
|
3521 {
|
|
619
|
3522 if (errno == EINVAL || errno == ENOENT)
|
|
594
|
3523 {
|
|
619
|
3524 /* Found non-symlink or not existing file, stop here.
|
|
|
3525 * When at the first level use the unmodifed name, skip the
|
|
594
|
3526 * call to vim_FullName(). */
|
|
|
3527 if (depth == 1)
|
|
|
3528 return FAIL;
|
|
|
3529
|
|
|
3530 /* Use the resolved name in tmp[]. */
|
|
|
3531 break;
|
|
|
3532 }
|
|
|
3533
|
|
|
3534 /* There must be some error reading links, use original name. */
|
|
|
3535 return FAIL;
|
|
|
3536 }
|
|
|
3537 buf[ret] = NUL;
|
|
|
3538
|
|
|
3539 /*
|
|
|
3540 * Check whether the symlink is relative or absolute.
|
|
|
3541 * If it's relative, build a new path based on the directory
|
|
|
3542 * portion of the filename (if any) and the path the symlink
|
|
|
3543 * points to.
|
|
|
3544 */
|
|
|
3545 if (mch_isFullName(buf))
|
|
|
3546 STRCPY(tmp, buf);
|
|
|
3547 else
|
|
|
3548 {
|
|
|
3549 char_u *tail;
|
|
|
3550
|
|
|
3551 tail = gettail(tmp);
|
|
|
3552 if (STRLEN(tail) + STRLEN(buf) >= MAXPATHL)
|
|
|
3553 return FAIL;
|
|
|
3554 STRCPY(tail, buf);
|
|
|
3555 }
|
|
|
3556 }
|
|
|
3557
|
|
|
3558 /*
|
|
|
3559 * Try to resolve the full name of the file so that the swapfile name will
|
|
|
3560 * be consistent even when opening a relative symlink from different
|
|
|
3561 * working directories.
|
|
|
3562 */
|
|
|
3563 return vim_FullName(tmp, buf, MAXPATHL, TRUE);
|
|
|
3564 }
|
|
|
3565 #endif
|
|
|
3566
|
|
7
|
3567 /*
|
|
460
|
3568 * Make swap file name out of the file name and a directory name.
|
|
|
3569 * Returns pointer to allocated memory or NULL.
|
|
7
|
3570 */
|
|
460
|
3571 /*ARGSUSED*/
|
|
|
3572 char_u *
|
|
|
3573 makeswapname(fname, ffname, buf, dir_name)
|
|
|
3574 char_u *fname;
|
|
|
3575 char_u *ffname;
|
|
7
|
3576 buf_T *buf;
|
|
|
3577 char_u *dir_name;
|
|
|
3578 {
|
|
|
3579 char_u *r, *s;
|
|
594
|
3580 #ifdef HAVE_READLINK
|
|
|
3581 char_u fname_buf[MAXPATHL];
|
|
|
3582 char_u *fname_res;
|
|
|
3583 #endif
|
|
7
|
3584
|
|
|
3585 #if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */
|
|
|
3586 s = dir_name + STRLEN(dir_name);
|
|
39
|
3587 if (after_pathsep(dir_name, s) && s[-1] == s[-2])
|
|
7
|
3588 { /* Ends with '//', Use Full path */
|
|
|
3589 r = NULL;
|
|
460
|
3590 if ((s = make_percent_swname(dir_name, fname)) != NULL)
|
|
7
|
3591 {
|
|
|
3592 r = modname(s, (char_u *)".swp", FALSE);
|
|
|
3593 vim_free(s);
|
|
|
3594 }
|
|
|
3595 return r;
|
|
|
3596 }
|
|
|
3597 #endif
|
|
|
3598
|
|
594
|
3599 #ifdef HAVE_READLINK
|
|
|
3600 /* Expand symlink in the file name, so that we put the swap file with the
|
|
|
3601 * actual file instead of with the symlink. */
|
|
|
3602 if (resolve_symlink(fname, fname_buf) == OK)
|
|
|
3603 fname_res = fname_buf;
|
|
|
3604 else
|
|
|
3605 fname_res = fname;
|
|
|
3606 #endif
|
|
|
3607
|
|
7
|
3608 r = buf_modname(
|
|
|
3609 #ifdef SHORT_FNAME
|
|
|
3610 TRUE,
|
|
|
3611 #else
|
|
|
3612 (buf->b_p_sn || buf->b_shortname),
|
|
|
3613 #endif
|
|
1082
|
3614 #ifdef RISCOS
|
|
|
3615 /* Avoid problems if fname has special chars, eg <Wimp$Scrap> */
|
|
460
|
3616 ffname,
|
|
7
|
3617 #else
|
|
594
|
3618 # ifdef HAVE_READLINK
|
|
|
3619 fname_res,
|
|
|
3620 # else
|
|
460
|
3621 fname,
|
|
594
|
3622 # endif
|
|
7
|
3623 #endif
|
|
|
3624 (char_u *)
|
|
|
3625 #if defined(VMS) || defined(RISCOS)
|
|
|
3626 "_swp",
|
|
|
3627 #else
|
|
|
3628 ".swp",
|
|
|
3629 #endif
|
|
|
3630 #ifdef SHORT_FNAME /* always 8.3 file name */
|
|
|
3631 FALSE
|
|
|
3632 #else
|
|
|
3633 /* Prepend a '.' to the swap file name for the current directory. */
|
|
|
3634 dir_name[0] == '.' && dir_name[1] == NUL
|
|
|
3635 #endif
|
|
|
3636 );
|
|
|
3637 if (r == NULL) /* out of memory */
|
|
|
3638 return NULL;
|
|
|
3639
|
|
|
3640 s = get_file_in_dir(r, dir_name);
|
|
|
3641 vim_free(r);
|
|
|
3642 return s;
|
|
|
3643 }
|
|
|
3644
|
|
|
3645 /*
|
|
|
3646 * Get file name to use for swap file or backup file.
|
|
|
3647 * Use the name of the edited file "fname" and an entry in the 'dir' or 'bdir'
|
|
|
3648 * option "dname".
|
|
|
3649 * - If "dname" is ".", return "fname" (swap file in dir of file).
|
|
|
3650 * - If "dname" starts with "./", insert "dname" in "fname" (swap file
|
|
|
3651 * relative to dir of file).
|
|
|
3652 * - Otherwise, prepend "dname" to the tail of "fname" (swap file in specific
|
|
|
3653 * dir).
|
|
|
3654 *
|
|
|
3655 * The return value is an allocated string and can be NULL.
|
|
|
3656 */
|
|
|
3657 char_u *
|
|
|
3658 get_file_in_dir(fname, dname)
|
|
|
3659 char_u *fname;
|
|
|
3660 char_u *dname; /* don't use "dirname", it is a global for Alpha */
|
|
|
3661 {
|
|
|
3662 char_u *t;
|
|
|
3663 char_u *tail;
|
|
|
3664 char_u *retval;
|
|
|
3665 int save_char;
|
|
|
3666
|
|
|
3667 tail = gettail(fname);
|
|
|
3668
|
|
|
3669 if (dname[0] == '.' && dname[1] == NUL)
|
|
|
3670 retval = vim_strsave(fname);
|
|
|
3671 else if (dname[0] == '.' && vim_ispathsep(dname[1]))
|
|
|
3672 {
|
|
|
3673 if (tail == fname) /* no path before file name */
|
|
|
3674 retval = concat_fnames(dname + 2, tail, TRUE);
|
|
|
3675 else
|
|
|
3676 {
|
|
|
3677 save_char = *tail;
|
|
|
3678 *tail = NUL;
|
|
|
3679 t = concat_fnames(fname, dname + 2, TRUE);
|
|
|
3680 *tail = save_char;
|
|
|
3681 if (t == NULL) /* out of memory */
|
|
|
3682 retval = NULL;
|
|
|
3683 else
|
|
|
3684 {
|
|
|
3685 retval = concat_fnames(t, tail, TRUE);
|
|
|
3686 vim_free(t);
|
|
|
3687 }
|
|
|
3688 }
|
|
|
3689 }
|
|
|
3690 else
|
|
|
3691 retval = concat_fnames(dname, tail, TRUE);
|
|
|
3692
|
|
|
3693 return retval;
|
|
|
3694 }
|
|
|
3695
|
|
580
|
3696 static void attention_message __ARGS((buf_T *buf, char_u *fname));
|
|
|
3697
|
|
|
3698 /*
|
|
|
3699 * Print the ATTENTION message: info about an existing swap file.
|
|
|
3700 */
|
|
|
3701 static void
|
|
|
3702 attention_message(buf, fname)
|
|
|
3703 buf_T *buf; /* buffer being edited */
|
|
|
3704 char_u *fname; /* swap file name */
|
|
|
3705 {
|
|
|
3706 struct stat st;
|
|
|
3707 time_t x, sx;
|
|
1001
|
3708 char *p;
|
|
580
|
3709
|
|
|
3710 ++no_wait_return;
|
|
|
3711 (void)EMSG(_("E325: ATTENTION"));
|
|
|
3712 MSG_PUTS(_("\nFound a swap file by the name \""));
|
|
|
3713 msg_home_replace(fname);
|
|
|
3714 MSG_PUTS("\"\n");
|
|
|
3715 sx = swapfile_info(fname);
|
|
|
3716 MSG_PUTS(_("While opening file \""));
|
|
|
3717 msg_outtrans(buf->b_fname);
|
|
|
3718 MSG_PUTS("\"\n");
|
|
|
3719 if (mch_stat((char *)buf->b_fname, &st) != -1)
|
|
|
3720 {
|
|
|
3721 MSG_PUTS(_(" dated: "));
|
|
|
3722 x = st.st_mtime; /* Manx C can't do &st.st_mtime */
|
|
1001
|
3723 p = ctime(&x); /* includes '\n' */
|
|
|
3724 if (p == NULL)
|
|
|
3725 MSG_PUTS("(invalid)\n");
|
|
|
3726 else
|
|
|
3727 MSG_PUTS(p);
|
|
580
|
3728 if (sx != 0 && x > sx)
|
|
|
3729 MSG_PUTS(_(" NEWER than swap file!\n"));
|
|
|
3730 }
|
|
|
3731 /* Some of these messages are long to allow translation to
|
|
|
3732 * other languages. */
|
|
|
3733 MSG_PUTS(_("\n(1) Another program may be editing the same file.\n If this is the case, be careful not to end up with two\n different instances of the same file when making changes.\n"));
|
|
|
3734 MSG_PUTS(_(" Quit, or continue with caution.\n"));
|
|
|
3735 MSG_PUTS(_("\n(2) An edit session for this file crashed.\n"));
|
|
|
3736 MSG_PUTS(_(" If this is the case, use \":recover\" or \"vim -r "));
|
|
|
3737 msg_outtrans(buf->b_fname);
|
|
|
3738 MSG_PUTS(_("\"\n to recover the changes (see \":help recovery\").\n"));
|
|
|
3739 MSG_PUTS(_(" If you did this already, delete the swap file \""));
|
|
|
3740 msg_outtrans(fname);
|
|
|
3741 MSG_PUTS(_("\"\n to avoid this message.\n"));
|
|
|
3742 cmdline_row = msg_row;
|
|
|
3743 --no_wait_return;
|
|
|
3744 }
|
|
|
3745
|
|
|
3746 #ifdef FEAT_AUTOCMD
|
|
|
3747 static int do_swapexists __ARGS((buf_T *buf, char_u *fname));
|
|
|
3748
|
|
|
3749 /*
|
|
|
3750 * Trigger the SwapExists autocommands.
|
|
|
3751 * Returns a value for equivalent to do_dialog() (see below):
|
|
|
3752 * 0: still need to ask for a choice
|
|
|
3753 * 1: open read-only
|
|
|
3754 * 2: edit anyway
|
|
|
3755 * 3: recover
|
|
|
3756 * 4: delete it
|
|
|
3757 * 5: quit
|
|
|
3758 * 6: abort
|
|
|
3759 */
|
|
|
3760 static int
|
|
|
3761 do_swapexists(buf, fname)
|
|
|
3762 buf_T *buf;
|
|
|
3763 char_u *fname;
|
|
|
3764 {
|
|
|
3765 set_vim_var_string(VV_SWAPNAME, fname, -1);
|
|
|
3766 set_vim_var_string(VV_SWAPCHOICE, NULL, -1);
|
|
|
3767
|
|
|
3768 /* Trigger SwapExists autocommands with <afile> set to the file being
|
|
|
3769 * edited. */
|
|
|
3770 apply_autocmds(EVENT_SWAPEXISTS, buf->b_fname, NULL, FALSE, NULL);
|
|
|
3771
|
|
|
3772 set_vim_var_string(VV_SWAPNAME, NULL, -1);
|
|
|
3773
|
|
|
3774 switch (*get_vim_var_str(VV_SWAPCHOICE))
|
|
|
3775 {
|
|
|
3776 case 'o': return 1;
|
|
|
3777 case 'e': return 2;
|
|
|
3778 case 'r': return 3;
|
|
|
3779 case 'd': return 4;
|
|
|
3780 case 'q': return 5;
|
|
|
3781 case 'a': return 6;
|
|
|
3782 }
|
|
|
3783
|
|
|
3784 return 0;
|
|
|
3785 }
|
|
|
3786 #endif
|
|
|
3787
|
|
7
|
3788 /*
|
|
|
3789 * Find out what name to use for the swap file for buffer 'buf'.
|
|
|
3790 *
|
|
|
3791 * Several names are tried to find one that does not exist
|
|
460
|
3792 * Returns the name in allocated memory or NULL.
|
|
7
|
3793 *
|
|
|
3794 * Note: If BASENAMELEN is not correct, you will get error messages for
|
|
|
3795 * not being able to open the swapfile
|
|
|
3796 */
|
|
|
3797 static char_u *
|
|
|
3798 findswapname(buf, dirp, old_fname)
|
|
|
3799 buf_T *buf;
|
|
|
3800 char_u **dirp; /* pointer to list of directories */
|
|
|
3801 char_u *old_fname; /* don't give warning for this file name */
|
|
|
3802 {
|
|
|
3803 char_u *fname;
|
|
|
3804 int n;
|
|
|
3805 char_u *dir_name;
|
|
|
3806 #ifdef AMIGA
|
|
|
3807 BPTR fh;
|
|
|
3808 #endif
|
|
|
3809 #ifndef SHORT_FNAME
|
|
|
3810 int r;
|
|
|
3811 #endif
|
|
|
3812
|
|
|
3813 #if !defined(SHORT_FNAME) \
|
|
|
3814 && ((!defined(UNIX) && !defined(OS2)) || defined(ARCHIE))
|
|
|
3815 # define CREATE_DUMMY_FILE
|
|
|
3816 FILE *dummyfd = NULL;
|
|
|
3817
|
|
|
3818 /*
|
|
|
3819 * If we start editing a new file, e.g. "test.doc", which resides on an MSDOS
|
|
|
3820 * compatible filesystem, it is possible that the file "test.doc.swp" which we
|
|
|
3821 * create will be exactly the same file. To avoid this problem we temporarily
|
|
|
3822 * create "test.doc".
|
|
|
3823 * Don't do this when the check below for a 8.3 file name is used.
|
|
|
3824 */
|
|
|
3825 if (!(buf->b_p_sn || buf->b_shortname) && buf->b_fname != NULL
|
|
|
3826 && mch_getperm(buf->b_fname) < 0)
|
|
|
3827 dummyfd = mch_fopen((char *)buf->b_fname, "w");
|
|
|
3828 #endif
|
|
|
3829
|
|
|
3830 /*
|
|
|
3831 * Isolate a directory name from *dirp and put it in dir_name.
|
|
|
3832 * First allocate some memory to put the directory name in.
|
|
|
3833 */
|
|
|
3834 dir_name = alloc((unsigned)STRLEN(*dirp) + 1);
|
|
|
3835 if (dir_name != NULL)
|
|
|
3836 (void)copy_option_part(dirp, dir_name, 31000, ",");
|
|
|
3837
|
|
|
3838 /*
|
|
|
3839 * we try different names until we find one that does not exist yet
|
|
|
3840 */
|
|
|
3841 if (dir_name == NULL) /* out of memory */
|
|
|
3842 fname = NULL;
|
|
|
3843 else
|
|
460
|
3844 fname = makeswapname(buf->b_fname, buf->b_ffname, buf, dir_name);
|
|
7
|
3845
|
|
|
3846 for (;;)
|
|
|
3847 {
|
|
|
3848 if (fname == NULL) /* must be out of memory */
|
|
|
3849 break;
|
|
|
3850 if ((n = (int)STRLEN(fname)) == 0) /* safety check */
|
|
|
3851 {
|
|
|
3852 vim_free(fname);
|
|
|
3853 fname = NULL;
|
|
|
3854 break;
|
|
|
3855 }
|
|
|
3856 #if (defined(UNIX) || defined(OS2)) && !defined(ARCHIE) && !defined(SHORT_FNAME)
|
|
|
3857 /*
|
|
|
3858 * Some systems have a MS-DOS compatible filesystem that use 8.3 character
|
|
|
3859 * file names. If this is the first try and the swap file name does not fit in
|
|
|
3860 * 8.3, detect if this is the case, set shortname and try again.
|
|
|
3861 */
|
|
|
3862 if (fname[n - 2] == 'w' && fname[n - 1] == 'p'
|
|
|
3863 && !(buf->b_p_sn || buf->b_shortname))
|
|
|
3864 {
|
|
|
3865 char_u *tail;
|
|
|
3866 char_u *fname2;
|
|
|
3867 struct stat s1, s2;
|
|
|
3868 int f1, f2;
|
|
|
3869 int created1 = FALSE, created2 = FALSE;
|
|
|
3870 int same = FALSE;
|
|
|
3871
|
|
|
3872 /*
|
|
|
3873 * Check if swapfile name does not fit in 8.3:
|
|
|
3874 * It either contains two dots, is longer than 8 chars, or starts
|
|
|
3875 * with a dot.
|
|
|
3876 */
|
|
|
3877 tail = gettail(buf->b_fname);
|
|
|
3878 if ( vim_strchr(tail, '.') != NULL
|
|
|
3879 || STRLEN(tail) > (size_t)8
|
|
|
3880 || *gettail(fname) == '.')
|
|
|
3881 {
|
|
|
3882 fname2 = alloc(n + 2);
|
|
|
3883 if (fname2 != NULL)
|
|
|
3884 {
|
|
|
3885 STRCPY(fname2, fname);
|
|
|
3886 /* if fname == "xx.xx.swp", fname2 = "xx.xx.swx"
|
|
|
3887 * if fname == ".xx.swp", fname2 = ".xx.swpx"
|
|
|
3888 * if fname == "123456789.swp", fname2 = "12345678x.swp"
|
|
|
3889 */
|
|
|
3890 if (vim_strchr(tail, '.') != NULL)
|
|
|
3891 fname2[n - 1] = 'x';
|
|
|
3892 else if (*gettail(fname) == '.')
|
|
|
3893 {
|
|
|
3894 fname2[n] = 'x';
|
|
|
3895 fname2[n + 1] = NUL;
|
|
|
3896 }
|
|
|
3897 else
|
|
|
3898 fname2[n - 5] += 1;
|
|
|
3899 /*
|
|
|
3900 * may need to create the files to be able to use mch_stat()
|
|
|
3901 */
|
|
|
3902 f1 = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0);
|
|
|
3903 if (f1 < 0)
|
|
|
3904 {
|
|
|
3905 f1 = mch_open_rw((char *)fname,
|
|
|
3906 O_RDWR|O_CREAT|O_EXCL|O_EXTRA);
|
|
|
3907 #if defined(OS2)
|
|
|
3908 if (f1 < 0 && errno == ENOENT)
|
|
|
3909 same = TRUE;
|
|
|
3910 #endif
|
|
|
3911 created1 = TRUE;
|
|
|
3912 }
|
|
|
3913 if (f1 >= 0)
|
|
|
3914 {
|
|
|
3915 f2 = mch_open((char *)fname2, O_RDONLY | O_EXTRA, 0);
|
|
|
3916 if (f2 < 0)
|
|
|
3917 {
|
|
|
3918 f2 = mch_open_rw((char *)fname2,
|
|
|
3919 O_RDWR|O_CREAT|O_EXCL|O_EXTRA);
|
|
|
3920 created2 = TRUE;
|
|
|
3921 }
|
|
|
3922 if (f2 >= 0)
|
|
|
3923 {
|
|
|
3924 /*
|
|
|
3925 * Both files exist now. If mch_stat() returns the
|
|
|
3926 * same device and inode they are the same file.
|
|
|
3927 */
|
|
|
3928 if (mch_fstat(f1, &s1) != -1
|
|
|
3929 && mch_fstat(f2, &s2) != -1
|
|
|
3930 && s1.st_dev == s2.st_dev
|
|
|
3931 && s1.st_ino == s2.st_ino)
|
|
|
3932 same = TRUE;
|
|
|
3933 close(f2);
|
|
|
3934 if (created2)
|
|
|
3935 mch_remove(fname2);
|
|
|
3936 }
|
|
|
3937 close(f1);
|
|
|
3938 if (created1)
|
|
|
3939 mch_remove(fname);
|
|
|
3940 }
|
|
|
3941 vim_free(fname2);
|
|
|
3942 if (same)
|
|
|
3943 {
|
|
|
3944 buf->b_shortname = TRUE;
|
|
|
3945 vim_free(fname);
|
|
460
|
3946 fname = makeswapname(buf->b_fname, buf->b_ffname,
|
|
|
3947 buf, dir_name);
|
|
7
|
3948 continue; /* try again with b_shortname set */
|
|
|
3949 }
|
|
|
3950 }
|
|
|
3951 }
|
|
|
3952 }
|
|
|
3953 #endif
|
|
|
3954 /*
|
|
|
3955 * check if the swapfile already exists
|
|
|
3956 */
|
|
|
3957 if (mch_getperm(fname) < 0) /* it does not exist */
|
|
|
3958 {
|
|
|
3959 #ifdef HAVE_LSTAT
|
|
|
3960 struct stat sb;
|
|
|
3961
|
|
|
3962 /*
|
|
|
3963 * Extra security check: When a swap file is a symbolic link, this
|
|
|
3964 * is most likely a symlink attack.
|
|
|
3965 */
|
|
|
3966 if (mch_lstat((char *)fname, &sb) < 0)
|
|
|
3967 #else
|
|
|
3968 # ifdef AMIGA
|
|
|
3969 fh = Open((UBYTE *)fname, (long)MODE_NEWFILE);
|
|
|
3970 /*
|
|
|
3971 * on the Amiga mch_getperm() will return -1 when the file exists
|
|
|
3972 * but is being used by another program. This happens if you edit
|
|
|
3973 * a file twice.
|
|
|
3974 */
|
|
|
3975 if (fh != (BPTR)NULL) /* can open file, OK */
|
|
|
3976 {
|
|
|
3977 Close(fh);
|
|
|
3978 mch_remove(fname);
|
|
|
3979 break;
|
|
|
3980 }
|
|
|
3981 if (IoErr() != ERROR_OBJECT_IN_USE
|
|
|
3982 && IoErr() != ERROR_OBJECT_EXISTS)
|
|
|
3983 # endif
|
|
|
3984 #endif
|
|
|
3985 break;
|
|
|
3986 }
|
|
|
3987
|
|
|
3988 /*
|
|
|
3989 * A file name equal to old_fname is OK to use.
|
|
|
3990 */
|
|
|
3991 if (old_fname != NULL && fnamecmp(fname, old_fname) == 0)
|
|
|
3992 break;
|
|
|
3993
|
|
|
3994 /*
|
|
|
3995 * get here when file already exists
|
|
|
3996 */
|
|
|
3997 if (fname[n - 2] == 'w' && fname[n - 1] == 'p') /* first try */
|
|
|
3998 {
|
|
|
3999 #ifndef SHORT_FNAME
|
|
|
4000 /*
|
|
|
4001 * on MS-DOS compatible filesystems (e.g. messydos) file.doc.swp
|
|
|
4002 * and file.doc are the same file. To guess if this problem is
|
|
|
4003 * present try if file.doc.swx exists. If it does, we set
|
|
|
4004 * buf->b_shortname and try file_doc.swp (dots replaced by
|
|
|
4005 * underscores for this file), and try again. If it doesn't we
|
|
|
4006 * assume that "file.doc.swp" already exists.
|
|
|
4007 */
|
|
|
4008 if (!(buf->b_p_sn || buf->b_shortname)) /* not tried yet */
|
|
|
4009 {
|
|
|
4010 fname[n - 1] = 'x';
|
|
|
4011 r = mch_getperm(fname); /* try "file.swx" */
|
|
|
4012 fname[n - 1] = 'p';
|
|
|
4013 if (r >= 0) /* "file.swx" seems to exist */
|
|
|
4014 {
|
|
|
4015 buf->b_shortname = TRUE;
|
|
|
4016 vim_free(fname);
|
|
460
|
4017 fname = makeswapname(buf->b_fname, buf->b_ffname,
|
|
|
4018 buf, dir_name);
|
|
7
|
4019 continue; /* try again with '.' replaced with '_' */
|
|
|
4020 }
|
|
|
4021 }
|
|
|
4022 #endif
|
|
|
4023 /*
|
|
|
4024 * If we get here the ".swp" file really exists.
|
|
|
4025 * Give an error message, unless recovering, no file name, we are
|
|
|
4026 * viewing a help file or when the path of the file is different
|
|
|
4027 * (happens when all .swp files are in one directory).
|
|
|
4028 */
|
|
43
|
4029 if (!recoverymode && buf->b_fname != NULL
|
|
|
4030 && !buf->b_help && !(buf->b_flags & BF_DUMMY))
|
|
7
|
4031 {
|
|
|
4032 int fd;
|
|
|
4033 struct block0 b0;
|
|
|
4034 int differ = FALSE;
|
|
|
4035
|
|
|
4036 /*
|
|
|
4037 * Try to read block 0 from the swap file to get the original
|
|
|
4038 * file name (and inode number).
|
|
|
4039 */
|
|
|
4040 fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0);
|
|
|
4041 if (fd >= 0)
|
|
|
4042 {
|
|
|
4043 if (read(fd, (char *)&b0, sizeof(b0)) == sizeof(b0))
|
|
|
4044 {
|
|
|
4045 /*
|
|
39
|
4046 * If the swapfile has the same directory as the
|
|
|
4047 * buffer don't compare the directory names, they can
|
|
|
4048 * have a different mountpoint.
|
|
7
|
4049 */
|
|
39
|
4050 if (b0.b0_flags & B0_SAME_DIR)
|
|
|
4051 {
|
|
|
4052 if (fnamecmp(gettail(buf->b_ffname),
|
|
|
4053 gettail(b0.b0_fname)) != 0
|
|
|
4054 || !same_directory(fname, buf->b_ffname))
|
|
594
|
4055 {
|
|
|
4056 #ifdef CHECK_INODE
|
|
|
4057 /* Symlinks may point to the same file even
|
|
|
4058 * when the name differs, need to check the
|
|
|
4059 * inode too. */
|
|
|
4060 expand_env(b0.b0_fname, NameBuff, MAXPATHL);
|
|
|
4061 if (fnamecmp_ino(buf->b_ffname, NameBuff,
|
|
|
4062 char_to_long(b0.b0_ino)))
|
|
|
4063 #endif
|
|
|
4064 differ = TRUE;
|
|
|
4065 }
|
|
39
|
4066 }
|
|
|
4067 else
|
|
|
4068 {
|
|
|
4069 /*
|
|
|
4070 * The name in the swap file may be
|
|
|
4071 * "~user/path/file". Expand it first.
|
|
|
4072 */
|
|
|
4073 expand_env(b0.b0_fname, NameBuff, MAXPATHL);
|
|
7
|
4074 #ifdef CHECK_INODE
|
|
39
|
4075 if (fnamecmp_ino(buf->b_ffname, NameBuff,
|
|
594
|
4076 char_to_long(b0.b0_ino)))
|
|
39
|
4077 differ = TRUE;
|
|
7
|
4078 #else
|
|
39
|
4079 if (fnamecmp(NameBuff, buf->b_ffname) != 0)
|
|
|
4080 differ = TRUE;
|
|
7
|
4081 #endif
|
|
39
|
4082 }
|
|
7
|
4083 }
|
|
|
4084 close(fd);
|
|
|
4085 }
|
|
|
4086 #ifdef RISCOS
|
|
|
4087 else
|
|
|
4088 /* Can't open swap file, though it does exist.
|
|
|
4089 * Assume that the user is editing two files with
|
|
|
4090 * the same name in different directories. No error.
|
|
|
4091 */
|
|
|
4092 differ = TRUE;
|
|
|
4093 #endif
|
|
|
4094
|
|
|
4095 /* give the ATTENTION message when there is an old swap file
|
|
|
4096 * for the current file, and the buffer was not recovered. */
|
|
|
4097 if (differ == FALSE && !(curbuf->b_flags & BF_RECOVERED)
|
|
|
4098 && vim_strchr(p_shm, SHM_ATTENTION) == NULL)
|
|
|
4099 {
|
|
580
|
4100 #if defined(HAS_SWAP_EXISTS_ACTION)
|
|
|
4101 int choice = 0;
|
|
|
4102 #endif
|
|
7
|
4103 #ifdef CREATE_DUMMY_FILE
|
|
|
4104 int did_use_dummy = FALSE;
|
|
|
4105
|
|
|
4106 /* Avoid getting a warning for the file being created
|
|
|
4107 * outside of Vim, it was created at the start of this
|
|
|
4108 * function. Delete the file now, because Vim might exit
|
|
|
4109 * here if the window is closed. */
|
|
|
4110 if (dummyfd != NULL)
|
|
|
4111 {
|
|
|
4112 fclose(dummyfd);
|
|
|
4113 dummyfd = NULL;
|
|
|
4114 mch_remove(buf->b_fname);
|
|
|
4115 did_use_dummy = TRUE;
|
|
|
4116 }
|
|
|
4117 #endif
|
|
|
4118
|
|
|
4119 #if (defined(UNIX) || defined(__EMX__) || defined(VMS)) && (defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG))
|
|
|
4120 process_still_running = FALSE;
|
|
|
4121 #endif
|
|
580
|
4122 #ifdef FEAT_AUTOCMD
|
|
|
4123 /*
|
|
|
4124 * If there is an SwapExists autocommand and we can handle
|
|
|
4125 * the response, trigger it. It may return 0 to ask the
|
|
|
4126 * user anyway.
|
|
|
4127 */
|
|
|
4128 if (swap_exists_action != SEA_NONE
|
|
|
4129 && has_autocmd(EVENT_SWAPEXISTS, buf->b_fname, buf))
|
|
|
4130 choice = do_swapexists(buf, fname);
|
|
|
4131
|
|
|
4132 if (choice == 0)
|
|
|
4133 #endif
|
|
7
|
4134 {
|
|
580
|
4135 #ifdef FEAT_GUI
|
|
|
4136 /* If we are supposed to start the GUI but it wasn't
|
|
|
4137 * completely started yet, start it now. This makes
|
|
|
4138 * the messages displayed in the Vim window when
|
|
|
4139 * loading a session from the .gvimrc file. */
|
|
|
4140 if (gui.starting && !gui.in_use)
|
|
|
4141 gui_start();
|
|
|
4142 #endif
|
|
|
4143 /* Show info about the existing swap file. */
|
|
|
4144 attention_message(buf, fname);
|
|
|
4145
|
|
|
4146 /* We don't want a 'q' typed at the more-prompt
|
|
|
4147 * interrupt loading a file. */
|
|
|
4148 got_int = FALSE;
|
|
7
|
4149 }
|
|
|
4150
|
|
|
4151 #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
|
|
580
|
4152 if (swap_exists_action != SEA_NONE && choice == 0)
|
|
7
|
4153 {
|
|
|
4154 char_u *name;
|
|
|
4155
|
|
|
4156 name = alloc((unsigned)(STRLEN(fname)
|
|
|
4157 + STRLEN(_("Swap file \""))
|
|
|
4158 + STRLEN(_("\" already exists!")) + 5));
|
|
|
4159 if (name != NULL)
|
|
|
4160 {
|
|
|
4161 STRCPY(name, _("Swap file \""));
|
|
|
4162 home_replace(NULL, fname, name + STRLEN(name),
|
|
|
4163 1000, TRUE);
|
|
|
4164 STRCAT(name, _("\" already exists!"));
|
|
|
4165 }
|
|
580
|
4166 choice = do_dialog(VIM_WARNING,
|
|
7
|
4167 (char_u *)_("VIM - ATTENTION"),
|
|
|
4168 name == NULL
|
|
|
4169 ? (char_u *)_("Swap file already exists!")
|
|
|
4170 : name,
|
|
|
4171 # if defined(UNIX) || defined(__EMX__) || defined(VMS)
|
|
|
4172 process_still_running
|
|
|
4173 ? (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Quit\n&Abort") :
|
|
|
4174 # endif
|
|
580
|
4175 (char_u *)_("&Open Read-Only\n&Edit anyway\n&Recover\n&Delete it\n&Quit\n&Abort"), 1, NULL);
|
|
|
4176
|
|
|
4177 # if defined(UNIX) || defined(__EMX__) || defined(VMS)
|
|
|
4178 if (process_still_running && choice >= 4)
|
|
|
4179 choice++; /* Skip missing "Delete it" button */
|
|
|
4180 # endif
|
|
|
4181 vim_free(name);
|
|
|
4182
|
|
|
4183 /* pretend screen didn't scroll, need redraw anyway */
|
|
|
4184 msg_scrolled = 0;
|
|
|
4185 redraw_all_later(NOT_VALID);
|
|
|
4186 }
|
|
|
4187 #endif
|
|
|
4188
|
|
|
4189 #if defined(HAS_SWAP_EXISTS_ACTION)
|
|
|
4190 if (choice > 0)
|
|
|
4191 {
|
|
|
4192 switch (choice)
|
|
7
|
4193 {
|
|
|
4194 case 1:
|
|
|
4195 buf->b_p_ro = TRUE;
|
|
|
4196 break;
|
|
|
4197 case 2:
|
|
|
4198 break;
|
|
|
4199 case 3:
|
|
|
4200 swap_exists_action = SEA_RECOVER;
|
|
|
4201 break;
|
|
|
4202 case 4:
|
|
580
|
4203 mch_remove(fname);
|
|
|
4204 break;
|
|
|
4205 case 5:
|
|
7
|
4206 swap_exists_action = SEA_QUIT;
|
|
|
4207 break;
|
|
580
|
4208 case 6:
|
|
7
|
4209 swap_exists_action = SEA_QUIT;
|
|
|
4210 got_int = TRUE;
|
|
|
4211 break;
|
|
|
4212 }
|
|
|
4213
|
|
|
4214 /* If the file was deleted this fname can be used. */
|
|
|
4215 if (mch_getperm(fname) < 0)
|
|
|
4216 break;
|
|
|
4217 }
|
|
|
4218 else
|
|
|
4219 #endif
|
|
|
4220 {
|
|
|
4221 MSG_PUTS("\n");
|
|
625
|
4222 if (msg_silent == 0)
|
|
|
4223 /* call wait_return() later */
|
|
|
4224 need_wait_return = TRUE;
|
|
7
|
4225 }
|
|
|
4226
|
|
|
4227 #ifdef CREATE_DUMMY_FILE
|
|
|
4228 /* Going to try another name, need the dummy file again. */
|
|
|
4229 if (did_use_dummy)
|
|
|
4230 dummyfd = mch_fopen((char *)buf->b_fname, "w");
|
|
|
4231 #endif
|
|
|
4232 }
|
|
|
4233 }
|
|
|
4234 }
|
|
|
4235
|
|
|
4236 /*
|
|
|
4237 * Change the ".swp" extension to find another file that can be used.
|
|
|
4238 * First decrement the last char: ".swo", ".swn", etc.
|
|
|
4239 * If that still isn't enough decrement the last but one char: ".svz"
|
|
9
|
4240 * Can happen when editing many "No Name" buffers.
|
|
7
|
4241 */
|
|
|
4242 if (fname[n - 1] == 'a') /* ".s?a" */
|
|
|
4243 {
|
|
|
4244 if (fname[n - 2] == 'a') /* ".saa": tried enough, give up */
|
|
|
4245 {
|
|
|
4246 EMSG(_("E326: Too many swap files found"));
|
|
|
4247 vim_free(fname);
|
|
|
4248 fname = NULL;
|
|
|
4249 break;
|
|
|
4250 }
|
|
|
4251 --fname[n - 2]; /* ".svz", ".suz", etc. */
|
|
|
4252 fname[n - 1] = 'z' + 1;
|
|
|
4253 }
|
|
|
4254 --fname[n - 1]; /* ".swo", ".swn", etc. */
|
|
|
4255 }
|
|
|
4256
|
|
|
4257 vim_free(dir_name);
|
|
|
4258 #ifdef CREATE_DUMMY_FILE
|
|
|
4259 if (dummyfd != NULL) /* file has been created temporarily */
|
|
|
4260 {
|
|
|
4261 fclose(dummyfd);
|
|
|
4262 mch_remove(buf->b_fname);
|
|
|
4263 }
|
|
|
4264 #endif
|
|
|
4265 return fname;
|
|
|
4266 }
|
|
|
4267
|
|
|
4268 static int
|
|
|
4269 b0_magic_wrong(b0p)
|
|
|
4270 ZERO_BL *b0p;
|
|
|
4271 {
|
|
|
4272 return (b0p->b0_magic_long != (long)B0_MAGIC_LONG
|
|
|
4273 || b0p->b0_magic_int != (int)B0_MAGIC_INT
|
|
|
4274 || b0p->b0_magic_short != (short)B0_MAGIC_SHORT
|
|
|
4275 || b0p->b0_magic_char != B0_MAGIC_CHAR);
|
|
|
4276 }
|
|
|
4277
|
|
|
4278 #ifdef CHECK_INODE
|
|
|
4279 /*
|
|
|
4280 * Compare current file name with file name from swap file.
|
|
|
4281 * Try to use inode numbers when possible.
|
|
|
4282 * Return non-zero when files are different.
|
|
|
4283 *
|
|
|
4284 * When comparing file names a few things have to be taken into consideration:
|
|
|
4285 * - When working over a network the full path of a file depends on the host.
|
|
|
4286 * We check the inode number if possible. It is not 100% reliable though,
|
|
|
4287 * because the device number cannot be used over a network.
|
|
|
4288 * - When a file does not exist yet (editing a new file) there is no inode
|
|
|
4289 * number.
|
|
|
4290 * - The file name in a swap file may not be valid on the current host. The
|
|
|
4291 * "~user" form is used whenever possible to avoid this.
|
|
|
4292 *
|
|
|
4293 * This is getting complicated, let's make a table:
|
|
|
4294 *
|
|
|
4295 * ino_c ino_s fname_c fname_s differ =
|
|
|
4296 *
|
|
|
4297 * both files exist -> compare inode numbers:
|
|
|
4298 * != 0 != 0 X X ino_c != ino_s
|
|
|
4299 *
|
|
|
4300 * inode number(s) unknown, file names available -> compare file names
|
|
|
4301 * == 0 X OK OK fname_c != fname_s
|
|
|
4302 * X == 0 OK OK fname_c != fname_s
|
|
|
4303 *
|
|
|
4304 * current file doesn't exist, file for swap file exist, file name(s) not
|
|
|
4305 * available -> probably different
|
|
|
4306 * == 0 != 0 FAIL X TRUE
|
|
|
4307 * == 0 != 0 X FAIL TRUE
|
|
|
4308 *
|
|
|
4309 * current file exists, inode for swap unknown, file name(s) not
|
|
|
4310 * available -> probably different
|
|
|
4311 * != 0 == 0 FAIL X TRUE
|
|
|
4312 * != 0 == 0 X FAIL TRUE
|
|
|
4313 *
|
|
|
4314 * current file doesn't exist, inode for swap unknown, one file name not
|
|
|
4315 * available -> probably different
|
|
|
4316 * == 0 == 0 FAIL OK TRUE
|
|
|
4317 * == 0 == 0 OK FAIL TRUE
|
|
|
4318 *
|
|
|
4319 * current file doesn't exist, inode for swap unknown, both file names not
|
|
|
4320 * available -> probably same file
|
|
|
4321 * == 0 == 0 FAIL FAIL FALSE
|
|
|
4322 *
|
|
|
4323 * Note that when the ino_t is 64 bits, only the last 32 will be used. This
|
|
|
4324 * can't be changed without making the block 0 incompatible with 32 bit
|
|
|
4325 * versions.
|
|
|
4326 */
|
|
|
4327
|
|
|
4328 static int
|
|
|
4329 fnamecmp_ino(fname_c, fname_s, ino_block0)
|
|
|
4330 char_u *fname_c; /* current file name */
|
|
|
4331 char_u *fname_s; /* file name from swap file */
|
|
|
4332 long ino_block0;
|
|
|
4333 {
|
|
|
4334 struct stat st;
|
|
|
4335 ino_t ino_c = 0; /* ino of current file */
|
|
|
4336 ino_t ino_s; /* ino of file from swap file */
|
|
|
4337 char_u buf_c[MAXPATHL]; /* full path of fname_c */
|
|
|
4338 char_u buf_s[MAXPATHL]; /* full path of fname_s */
|
|
|
4339 int retval_c; /* flag: buf_c valid */
|
|
|
4340 int retval_s; /* flag: buf_s valid */
|
|
|
4341
|
|
|
4342 if (mch_stat((char *)fname_c, &st) == 0)
|
|
|
4343 ino_c = (ino_t)st.st_ino;
|
|
|
4344
|
|
|
4345 /*
|
|
|
4346 * First we try to get the inode from the file name, because the inode in
|
|
|
4347 * the swap file may be outdated. If that fails (e.g. this path is not
|
|
|
4348 * valid on this machine), use the inode from block 0.
|
|
|
4349 */
|
|
|
4350 if (mch_stat((char *)fname_s, &st) == 0)
|
|
|
4351 ino_s = (ino_t)st.st_ino;
|
|
|
4352 else
|
|
|
4353 ino_s = (ino_t)ino_block0;
|
|
|
4354
|
|
|
4355 if (ino_c && ino_s)
|
|
|
4356 return (ino_c != ino_s);
|
|
|
4357
|
|
|
4358 /*
|
|
|
4359 * One of the inode numbers is unknown, try a forced vim_FullName() and
|
|
|
4360 * compare the file names.
|
|
|
4361 */
|
|
|
4362 retval_c = vim_FullName(fname_c, buf_c, MAXPATHL, TRUE);
|
|
|
4363 retval_s = vim_FullName(fname_s, buf_s, MAXPATHL, TRUE);
|
|
|
4364 if (retval_c == OK && retval_s == OK)
|
|
|
4365 return (STRCMP(buf_c, buf_s) != 0);
|
|
|
4366
|
|
|
4367 /*
|
|
|
4368 * Can't compare inodes or file names, guess that the files are different,
|
|
|
4369 * unless both appear not to exist at all.
|
|
|
4370 */
|
|
|
4371 if (ino_s == 0 && ino_c == 0 && retval_c == FAIL && retval_s == FAIL)
|
|
|
4372 return FALSE;
|
|
|
4373 return TRUE;
|
|
|
4374 }
|
|
|
4375 #endif /* CHECK_INODE */
|
|
|
4376
|
|
|
4377 /*
|
|
|
4378 * Move a long integer into a four byte character array.
|
|
|
4379 * Used for machine independency in block zero.
|
|
|
4380 */
|
|
|
4381 static void
|
|
|
4382 long_to_char(n, s)
|
|
|
4383 long n;
|
|
|
4384 char_u *s;
|
|
|
4385 {
|
|
|
4386 s[0] = (char_u)(n & 0xff);
|
|
|
4387 n = (unsigned)n >> 8;
|
|
|
4388 s[1] = (char_u)(n & 0xff);
|
|
|
4389 n = (unsigned)n >> 8;
|
|
|
4390 s[2] = (char_u)(n & 0xff);
|
|
|
4391 n = (unsigned)n >> 8;
|
|
|
4392 s[3] = (char_u)(n & 0xff);
|
|
|
4393 }
|
|
|
4394
|
|
|
4395 static long
|
|
|
4396 char_to_long(s)
|
|
|
4397 char_u *s;
|
|
|
4398 {
|
|
|
4399 long retval;
|
|
|
4400
|
|
|
4401 retval = s[3];
|
|
|
4402 retval <<= 8;
|
|
|
4403 retval |= s[2];
|
|
|
4404 retval <<= 8;
|
|
|
4405 retval |= s[1];
|
|
|
4406 retval <<= 8;
|
|
|
4407 retval |= s[0];
|
|
|
4408
|
|
|
4409 return retval;
|
|
|
4410 }
|
|
|
4411
|
|
39
|
4412 /*
|
|
|
4413 * Set the flags in the first block of the swap file:
|
|
|
4414 * - file is modified or not: buf->b_changed
|
|
|
4415 * - 'fileformat'
|
|
|
4416 * - 'fileencoding'
|
|
|
4417 */
|
|
7
|
4418 void
|
|
39
|
4419 ml_setflags(buf)
|
|
7
|
4420 buf_T *buf;
|
|
|
4421 {
|
|
|
4422 bhdr_T *hp;
|
|
|
4423 ZERO_BL *b0p;
|
|
|
4424
|
|
|
4425 if (!buf->b_ml.ml_mfp)
|
|
|
4426 return;
|
|
|
4427 for (hp = buf->b_ml.ml_mfp->mf_used_last; hp != NULL; hp = hp->bh_prev)
|
|
|
4428 {
|
|
|
4429 if (hp->bh_bnum == 0)
|
|
|
4430 {
|
|
|
4431 b0p = (ZERO_BL *)(hp->bh_data);
|
|
39
|
4432 b0p->b0_dirty = buf->b_changed ? B0_DIRTY : 0;
|
|
|
4433 b0p->b0_flags = (b0p->b0_flags & ~B0_FF_MASK)
|
|
|
4434 | (get_fileformat(buf) + 1);
|
|
|
4435 #ifdef FEAT_MBYTE
|
|
|
4436 add_b0_fenc(b0p, buf);
|
|
|
4437 #endif
|
|
7
|
4438 hp->bh_flags |= BH_DIRTY;
|
|
|
4439 mf_sync(buf->b_ml.ml_mfp, MFS_ZERO);
|
|
|
4440 break;
|
|
|
4441 }
|
|
|
4442 }
|
|
|
4443 }
|
|
|
4444
|
|
|
4445 #if defined(FEAT_BYTEOFF) || defined(PROTO)
|
|
|
4446
|
|
|
4447 #define MLCS_MAXL 800 /* max no of lines in chunk */
|
|
|
4448 #define MLCS_MINL 400 /* should be half of MLCS_MAXL */
|
|
|
4449
|
|
|
4450 /*
|
|
|
4451 * Keep information for finding byte offset of a line, updtytpe may be one of:
|
|
|
4452 * ML_CHNK_ADDLINE: Add len to parent chunk, possibly splitting it
|
|
|
4453 * Careful: ML_CHNK_ADDLINE may cause ml_find_line() to be called.
|
|
|
4454 * ML_CHNK_DELLINE: Subtract len from parent chunk, possibly deleting it
|
|
|
4455 * ML_CHNK_UPDLINE: Add len to parent chunk, as a signed entity.
|
|
|
4456 */
|
|
|
4457 static void
|
|
|
4458 ml_updatechunk(buf, line, len, updtype)
|
|
|
4459 buf_T *buf;
|
|
|
4460 linenr_T line;
|
|
|
4461 long len;
|
|
|
4462 int updtype;
|
|
|
4463 {
|
|
|
4464 static buf_T *ml_upd_lastbuf = NULL;
|
|
|
4465 static linenr_T ml_upd_lastline;
|
|
|
4466 static linenr_T ml_upd_lastcurline;
|
|
|
4467 static int ml_upd_lastcurix;
|
|
|
4468
|
|
|
4469 linenr_T curline = ml_upd_lastcurline;
|
|
|
4470 int curix = ml_upd_lastcurix;
|
|
|
4471 long size;
|
|
|
4472 chunksize_T *curchnk;
|
|
|
4473 int rest;
|
|
|
4474 bhdr_T *hp;
|
|
|
4475 DATA_BL *dp;
|
|
|
4476
|
|
|
4477 if (buf->b_ml.ml_usedchunks == -1 || len == 0)
|
|
|
4478 return;
|
|
|
4479 if (buf->b_ml.ml_chunksize == NULL)
|
|
|
4480 {
|
|
|
4481 buf->b_ml.ml_chunksize = (chunksize_T *)
|
|
|
4482 alloc((unsigned)sizeof(chunksize_T) * 100);
|
|
|
4483 if (buf->b_ml.ml_chunksize == NULL)
|
|
|
4484 {
|
|
|
4485 buf->b_ml.ml_usedchunks = -1;
|
|
|
4486 return;
|
|
|
4487 }
|
|
|
4488 buf->b_ml.ml_numchunks = 100;
|
|
|
4489 buf->b_ml.ml_usedchunks = 1;
|
|
|
4490 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1;
|
|
|
4491 buf->b_ml.ml_chunksize[0].mlcs_totalsize = 1;
|
|
|
4492 }
|
|
|
4493
|
|
|
4494 if (updtype == ML_CHNK_UPDLINE && buf->b_ml.ml_line_count == 1)
|
|
|
4495 {
|
|
|
4496 /*
|
|
|
4497 * First line in empty buffer from ml_flush_line() -- reset
|
|
|
4498 */
|
|
|
4499 buf->b_ml.ml_usedchunks = 1;
|
|
|
4500 buf->b_ml.ml_chunksize[0].mlcs_numlines = 1;
|
|
|
4501 buf->b_ml.ml_chunksize[0].mlcs_totalsize =
|
|
|
4502 (long)STRLEN(buf->b_ml.ml_line_ptr) + 1;
|
|
|
4503 return;
|
|
|
4504 }
|
|
|
4505
|
|
|
4506 /*
|
|
|
4507 * Find chunk that our line belongs to, curline will be at start of the
|
|
|
4508 * chunk.
|
|
|
4509 */
|
|
|
4510 if (buf != ml_upd_lastbuf || line != ml_upd_lastline + 1
|
|
|
4511 || updtype != ML_CHNK_ADDLINE)
|
|
|
4512 {
|
|
|
4513 for (curline = 1, curix = 0;
|
|
|
4514 curix < buf->b_ml.ml_usedchunks - 1
|
|
|
4515 && line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines;
|
|
|
4516 curix++)
|
|
|
4517 {
|
|
|
4518 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines;
|
|
|
4519 }
|
|
|
4520 }
|
|
|
4521 else if (line >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines
|
|
|
4522 && curix < buf->b_ml.ml_usedchunks - 1)
|
|
|
4523 {
|
|
|
4524 /* Adjust cached curix & curline */
|
|
|
4525 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines;
|
|
|
4526 curix++;
|
|
|
4527 }
|
|
|
4528 curchnk = buf->b_ml.ml_chunksize + curix;
|
|
|
4529
|
|
|
4530 if (updtype == ML_CHNK_DELLINE)
|
|
1030
|
4531 len = -len;
|
|
7
|
4532 curchnk->mlcs_totalsize += len;
|
|
|
4533 if (updtype == ML_CHNK_ADDLINE)
|
|
|
4534 {
|
|
|
4535 curchnk->mlcs_numlines++;
|
|
|
4536
|
|
|
4537 /* May resize here so we don't have to do it in both cases below */
|
|
|
4538 if (buf->b_ml.ml_usedchunks + 1 >= buf->b_ml.ml_numchunks)
|
|
|
4539 {
|
|
|
4540 buf->b_ml.ml_numchunks = buf->b_ml.ml_numchunks * 3 / 2;
|
|
|
4541 buf->b_ml.ml_chunksize = (chunksize_T *)
|
|
|
4542 vim_realloc(buf->b_ml.ml_chunksize,
|
|
|
4543 sizeof(chunksize_T) * buf->b_ml.ml_numchunks);
|
|
|
4544 if (buf->b_ml.ml_chunksize == NULL)
|
|
|
4545 {
|
|
|
4546 /* Hmmmm, Give up on offset for this buffer */
|
|
|
4547 buf->b_ml.ml_usedchunks = -1;
|
|
|
4548 return;
|
|
|
4549 }
|
|
|
4550 }
|
|
|
4551
|
|
|
4552 if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MAXL)
|
|
|
4553 {
|
|
|
4554 int count; /* number of entries in block */
|
|
|
4555 int idx;
|
|
|
4556 int text_end;
|
|
|
4557 int linecnt;
|
|
|
4558
|
|
|
4559 mch_memmove(buf->b_ml.ml_chunksize + curix + 1,
|
|
|
4560 buf->b_ml.ml_chunksize + curix,
|
|
|
4561 (buf->b_ml.ml_usedchunks - curix) *
|
|
|
4562 sizeof(chunksize_T));
|
|
|
4563 /* Compute length of first half of lines in the splitted chunk */
|
|
|
4564 size = 0;
|
|
|
4565 linecnt = 0;
|
|
|
4566 while (curline < buf->b_ml.ml_line_count
|
|
|
4567 && linecnt < MLCS_MINL)
|
|
|
4568 {
|
|
|
4569 if ((hp = ml_find_line(buf, curline, ML_FIND)) == NULL)
|
|
|
4570 {
|
|
|
4571 buf->b_ml.ml_usedchunks = -1;
|
|
|
4572 return;
|
|
|
4573 }
|
|
|
4574 dp = (DATA_BL *)(hp->bh_data);
|
|
|
4575 count = (long)(buf->b_ml.ml_locked_high) -
|
|
|
4576 (long)(buf->b_ml.ml_locked_low) + 1;
|
|
|
4577 idx = curline - buf->b_ml.ml_locked_low;
|
|
|
4578 curline = buf->b_ml.ml_locked_high + 1;
|
|
|
4579 if (idx == 0)/* first line in block, text at the end */
|
|
|
4580 text_end = dp->db_txt_end;
|
|
|
4581 else
|
|
|
4582 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK);
|
|
|
4583 /* Compute index of last line to use in this MEMLINE */
|
|
|
4584 rest = count - idx;
|
|
|
4585 if (linecnt + rest > MLCS_MINL)
|
|
|
4586 {
|
|
|
4587 idx += MLCS_MINL - linecnt - 1;
|
|
|
4588 linecnt = MLCS_MINL;
|
|
|
4589 }
|
|
|
4590 else
|
|
|
4591 {
|
|
|
4592 idx = count - 1;
|
|
|
4593 linecnt += rest;
|
|
|
4594 }
|
|
|
4595 size += text_end - ((dp->db_index[idx]) & DB_INDEX_MASK);
|
|
|
4596 }
|
|
|
4597 buf->b_ml.ml_chunksize[curix].mlcs_numlines = linecnt;
|
|
|
4598 buf->b_ml.ml_chunksize[curix + 1].mlcs_numlines -= linecnt;
|
|
|
4599 buf->b_ml.ml_chunksize[curix].mlcs_totalsize = size;
|
|
|
4600 buf->b_ml.ml_chunksize[curix + 1].mlcs_totalsize -= size;
|
|
|
4601 buf->b_ml.ml_usedchunks++;
|
|
|
4602 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */
|
|
|
4603 return;
|
|
|
4604 }
|
|
|
4605 else if (buf->b_ml.ml_chunksize[curix].mlcs_numlines >= MLCS_MINL
|
|
|
4606 && curix == buf->b_ml.ml_usedchunks - 1
|
|
|
4607 && buf->b_ml.ml_line_count - line <= 1)
|
|
|
4608 {
|
|
|
4609 /*
|
|
|
4610 * We are in the last chunk and it is cheap to crate a new one
|
|
|
4611 * after this. Do it now to avoid the loop above later on
|
|
|
4612 */
|
|
|
4613 curchnk = buf->b_ml.ml_chunksize + curix + 1;
|
|
|
4614 buf->b_ml.ml_usedchunks++;
|
|
|
4615 if (line == buf->b_ml.ml_line_count)
|
|
|
4616 {
|
|
|
4617 curchnk->mlcs_numlines = 0;
|
|
|
4618 curchnk->mlcs_totalsize = 0;
|
|
|
4619 }
|
|
|
4620 else
|
|
|
4621 {
|
|
|
4622 /*
|
|
|
4623 * Line is just prior to last, move count for last
|
|
|
4624 * This is the common case when loading a new file
|
|
|
4625 */
|
|
|
4626 hp = ml_find_line(buf, buf->b_ml.ml_line_count, ML_FIND);
|
|
|
4627 if (hp == NULL)
|
|
|
4628 {
|
|
|
4629 buf->b_ml.ml_usedchunks = -1;
|
|
|
4630 return;
|
|
|
4631 }
|
|
|
4632 dp = (DATA_BL *)(hp->bh_data);
|
|
|
4633 if (dp->db_line_count == 1)
|
|
|
4634 rest = dp->db_txt_end - dp->db_txt_start;
|
|
|
4635 else
|
|
|
4636 rest =
|
|
|
4637 ((dp->db_index[dp->db_line_count - 2]) & DB_INDEX_MASK)
|
|
|
4638 - dp->db_txt_start;
|
|
|
4639 curchnk->mlcs_totalsize = rest;
|
|
|
4640 curchnk->mlcs_numlines = 1;
|
|
|
4641 curchnk[-1].mlcs_totalsize -= rest;
|
|
|
4642 curchnk[-1].mlcs_numlines -= 1;
|
|
|
4643 }
|
|
|
4644 }
|
|
|
4645 }
|
|
|
4646 else if (updtype == ML_CHNK_DELLINE)
|
|
|
4647 {
|
|
|
4648 curchnk->mlcs_numlines--;
|
|
|
4649 ml_upd_lastbuf = NULL; /* Force recalc of curix & curline */
|
|
|
4650 if (curix < (buf->b_ml.ml_usedchunks - 1)
|
|
|
4651 && (curchnk->mlcs_numlines + curchnk[1].mlcs_numlines)
|
|
|
4652 <= MLCS_MINL)
|
|
|
4653 {
|
|
|
4654 curix++;
|
|
|
4655 curchnk = buf->b_ml.ml_chunksize + curix;
|
|
|
4656 }
|
|
|
4657 else if (curix == 0 && curchnk->mlcs_numlines <= 0)
|
|
|
4658 {
|
|
|
4659 buf->b_ml.ml_usedchunks--;
|
|
|
4660 mch_memmove(buf->b_ml.ml_chunksize, buf->b_ml.ml_chunksize + 1,
|
|
|
4661 buf->b_ml.ml_usedchunks * sizeof(chunksize_T));
|
|
|
4662 return;
|
|
|
4663 }
|
|
|
4664 else if (curix == 0 || (curchnk->mlcs_numlines > 10
|
|
|
4665 && (curchnk->mlcs_numlines + curchnk[-1].mlcs_numlines)
|
|
|
4666 > MLCS_MINL))
|
|
|
4667 {
|
|
|
4668 return;
|
|
|
4669 }
|
|
|
4670
|
|
|
4671 /* Collapse chunks */
|
|
|
4672 curchnk[-1].mlcs_numlines += curchnk->mlcs_numlines;
|
|
|
4673 curchnk[-1].mlcs_totalsize += curchnk->mlcs_totalsize;
|
|
|
4674 buf->b_ml.ml_usedchunks--;
|
|
|
4675 if (curix < buf->b_ml.ml_usedchunks)
|
|
|
4676 {
|
|
|
4677 mch_memmove(buf->b_ml.ml_chunksize + curix,
|
|
|
4678 buf->b_ml.ml_chunksize + curix + 1,
|
|
|
4679 (buf->b_ml.ml_usedchunks - curix) *
|
|
|
4680 sizeof(chunksize_T));
|
|
|
4681 }
|
|
|
4682 return;
|
|
|
4683 }
|
|
|
4684 ml_upd_lastbuf = buf;
|
|
|
4685 ml_upd_lastline = line;
|
|
|
4686 ml_upd_lastcurline = curline;
|
|
|
4687 ml_upd_lastcurix = curix;
|
|
|
4688 }
|
|
|
4689
|
|
|
4690 /*
|
|
|
4691 * Find offset for line or line with offset.
|
|
169
|
4692 * Find line with offset if "lnum" is 0; return remaining offset in offp
|
|
|
4693 * Find offset of line if "lnum" > 0
|
|
7
|
4694 * return -1 if information is not available
|
|
|
4695 */
|
|
|
4696 long
|
|
169
|
4697 ml_find_line_or_offset(buf, lnum, offp)
|
|
7
|
4698 buf_T *buf;
|
|
169
|
4699 linenr_T lnum;
|
|
7
|
4700 long *offp;
|
|
|
4701 {
|
|
|
4702 linenr_T curline;
|
|
|
4703 int curix;
|
|
|
4704 long size;
|
|
|
4705 bhdr_T *hp;
|
|
|
4706 DATA_BL *dp;
|
|
|
4707 int count; /* number of entries in block */
|
|
|
4708 int idx;
|
|
|
4709 int start_idx;
|
|
|
4710 int text_end;
|
|
|
4711 long offset;
|
|
|
4712 int len;
|
|
|
4713 int ffdos = (get_fileformat(buf) == EOL_DOS);
|
|
|
4714 int extra = 0;
|
|
|
4715
|
|
169
|
4716 /* take care of cached line first */
|
|
|
4717 ml_flush_line(curbuf);
|
|
|
4718
|
|
7
|
4719 if (buf->b_ml.ml_usedchunks == -1
|
|
|
4720 || buf->b_ml.ml_chunksize == NULL
|
|
169
|
4721 || lnum < 0)
|
|
7
|
4722 return -1;
|
|
|
4723
|
|
|
4724 if (offp == NULL)
|
|
|
4725 offset = 0;
|
|
|
4726 else
|
|
|
4727 offset = *offp;
|
|
169
|
4728 if (lnum == 0 && offset <= 0)
|
|
7
|
4729 return 1; /* Not a "find offset" and offset 0 _must_ be in line 1 */
|
|
|
4730 /*
|
|
|
4731 * Find the last chunk before the one containing our line. Last chunk is
|
|
|
4732 * special because it will never qualify
|
|
|
4733 */
|
|
|
4734 curline = 1;
|
|
|
4735 curix = size = 0;
|
|
|
4736 while (curix < buf->b_ml.ml_usedchunks - 1
|
|
169
|
4737 && ((lnum != 0
|
|
|
4738 && lnum >= curline + buf->b_ml.ml_chunksize[curix].mlcs_numlines)
|
|
7
|
4739 || (offset != 0
|
|
|
4740 && offset > size + buf->b_ml.ml_chunksize[curix].mlcs_totalsize
|
|
|
4741 + ffdos * buf->b_ml.ml_chunksize[curix].mlcs_numlines)))
|
|
|
4742 {
|
|
|
4743 curline += buf->b_ml.ml_chunksize[curix].mlcs_numlines;
|
|
|
4744 size += buf->b_ml.ml_chunksize[curix].mlcs_totalsize;
|
|
|
4745 if (offset && ffdos)
|
|
|
4746 size += buf->b_ml.ml_chunksize[curix].mlcs_numlines;
|
|
|
4747 curix++;
|
|
|
4748 }
|
|
|
4749
|
|
169
|
4750 while ((lnum != 0 && curline < lnum) || (offset != 0 && size < offset))
|
|
7
|
4751 {
|
|
|
4752 if (curline > buf->b_ml.ml_line_count
|
|
|
4753 || (hp = ml_find_line(buf, curline, ML_FIND)) == NULL)
|
|
|
4754 return -1;
|
|
|
4755 dp = (DATA_BL *)(hp->bh_data);
|
|
|
4756 count = (long)(buf->b_ml.ml_locked_high) -
|
|
|
4757 (long)(buf->b_ml.ml_locked_low) + 1;
|
|
|
4758 start_idx = idx = curline - buf->b_ml.ml_locked_low;
|
|
|
4759 if (idx == 0)/* first line in block, text at the end */
|
|
|
4760 text_end = dp->db_txt_end;
|
|
|
4761 else
|
|
|
4762 text_end = ((dp->db_index[idx - 1]) & DB_INDEX_MASK);
|
|
|
4763 /* Compute index of last line to use in this MEMLINE */
|
|
169
|
4764 if (lnum != 0)
|
|
7
|
4765 {
|
|
169
|
4766 if (curline + (count - idx) >= lnum)
|
|
|
4767 idx += lnum - curline - 1;
|
|
7
|
4768 else
|
|
|
4769 idx = count - 1;
|
|
|
4770 }
|
|
|
4771 else
|
|
|
4772 {
|
|
|
4773 extra = 0;
|
|
|
4774 while (offset >= size
|
|
|
4775 + text_end - (int)((dp->db_index[idx]) & DB_INDEX_MASK)
|
|
|
4776 + ffdos)
|
|
|
4777 {
|
|
|
4778 if (ffdos)
|
|
|
4779 size++;
|
|
|
4780 if (idx == count - 1)
|
|
|
4781 {
|
|
|
4782 extra = 1;
|
|
|
4783 break;
|
|
|
4784 }
|
|
|
4785 idx++;
|
|
|
4786 }
|
|
|
4787 }
|
|
|
4788 len = text_end - ((dp->db_index[idx]) & DB_INDEX_MASK);
|
|
|
4789 size += len;
|
|
|
4790 if (offset != 0 && size >= offset)
|
|
|
4791 {
|
|
|
4792 if (size + ffdos == offset)
|
|
|
4793 *offp = 0;
|
|
|
4794 else if (idx == start_idx)
|
|
|
4795 *offp = offset - size + len;
|
|
|
4796 else
|
|
|
4797 *offp = offset - size + len
|
|
|
4798 - (text_end - ((dp->db_index[idx - 1]) & DB_INDEX_MASK));
|
|
|
4799 curline += idx - start_idx + extra;
|
|
|
4800 if (curline > buf->b_ml.ml_line_count)
|
|
|
4801 return -1; /* exactly one byte beyond the end */
|
|
|
4802 return curline;
|
|
|
4803 }
|
|
|
4804 curline = buf->b_ml.ml_locked_high + 1;
|
|
|
4805 }
|
|
|
4806
|
|
169
|
4807 if (lnum != 0)
|
|
20
|
4808 {
|
|
|
4809 /* Count extra CR characters. */
|
|
|
4810 if (ffdos)
|
|
169
|
4811 size += lnum - 1;
|
|
20
|
4812
|
|
|
4813 /* Don't count the last line break if 'bin' and 'noeol'. */
|
|
|
4814 if (buf->b_p_bin && !buf->b_p_eol)
|
|
|
4815 size -= ffdos + 1;
|
|
|
4816 }
|
|
|
4817
|
|
7
|
4818 return size;
|
|
|
4819 }
|
|
|
4820
|
|
|
4821 /*
|
|
|
4822 * Goto byte in buffer with offset 'cnt'.
|
|
|
4823 */
|
|
|
4824 void
|
|
|
4825 goto_byte(cnt)
|
|
|
4826 long cnt;
|
|
|
4827 {
|
|
|
4828 long boff = cnt;
|
|
|
4829 linenr_T lnum;
|
|
|
4830
|
|
|
4831 ml_flush_line(curbuf); /* cached line may be dirty */
|
|
|
4832 setpcmark();
|
|
|
4833 if (boff)
|
|
|
4834 --boff;
|
|
|
4835 lnum = ml_find_line_or_offset(curbuf, (linenr_T)0, &boff);
|
|
|
4836 if (lnum < 1) /* past the end */
|
|
|
4837 {
|
|
|
4838 curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
|
|
|
4839 curwin->w_curswant = MAXCOL;
|
|
|
4840 coladvance((colnr_T)MAXCOL);
|
|
|
4841 }
|
|
|
4842 else
|
|
|
4843 {
|
|
|
4844 curwin->w_cursor.lnum = lnum;
|
|
|
4845 curwin->w_cursor.col = (colnr_T)boff;
|
|
572
|
4846 # ifdef FEAT_VIRTUALEDIT
|
|
|
4847 curwin->w_cursor.coladd = 0;
|
|
|
4848 # endif
|
|
7
|
4849 curwin->w_set_curswant = TRUE;
|
|
|
4850 }
|
|
|
4851 check_cursor();
|
|
|
4852
|
|
|
4853 # ifdef FEAT_MBYTE
|
|
|
4854 /* Make sure the cursor is on the first byte of a multi-byte char. */
|
|
|
4855 if (has_mbyte)
|
|
|
4856 mb_adjust_cursor();
|
|
|
4857 # endif
|
|
|
4858 }
|
|
|
4859 #endif
|
