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