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7
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1 /* vim: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 /*
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11 * diff.c: code for diff'ing two or three buffers.
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12 */
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13
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14 #include "vim.h"
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15
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16 #if defined(FEAT_DIFF) || defined(PROTO)
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17
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18 #define DB_COUNT 4 /* up to four buffers can be diff'ed */
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19
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20 /*
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21 * Each diffblock defines where a block of lines starts in each of the buffers
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22 * and how many lines it occupies in that buffer. When the lines are missing
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23 * in the buffer the df_count[] is zero. This is all counted in
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24 * buffer lines.
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25 * There is always at least one unchanged line in between the diffs.
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26 * Otherwise it would have been included in the diff above or below it.
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27 * df_lnum[] + df_count[] is the lnum below the change. When in one buffer
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28 * lines have been inserted, in the other buffer df_lnum[] is the line below
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29 * the insertion and df_count[] is zero. When appending lines at the end of
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30 * the buffer, df_lnum[] is one beyond the end!
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31 * This is using a linked list, because the number of differences is expected
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32 * to be reasonable small. The list is sorted on lnum.
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33 */
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34 typedef struct diffblock diff_T;
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35 struct diffblock
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36 {
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37 diff_T *df_next;
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38 linenr_T df_lnum[DB_COUNT]; /* line number in buffer */
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39 linenr_T df_count[DB_COUNT]; /* nr of inserted/changed lines */
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40 };
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41
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42 static diff_T *first_diff = NULL;
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43
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44 static buf_T *(diffbuf[DB_COUNT]);
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45
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46 static int diff_invalid = TRUE; /* list of diffs is outdated */
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47
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48 static int diff_busy = FALSE; /* ex_diffgetput() is busy */
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49
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50 /* flags obtained from the 'diffopt' option */
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51 #define DIFF_FILLER 1 /* display filler lines */
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52 #define DIFF_ICASE 2 /* ignore case */
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53 #define DIFF_IWHITE 4 /* ignore change in white space */
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54 static int diff_flags = DIFF_FILLER;
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55
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56 #define LBUFLEN 50 /* length of line in diff file */
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57
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58 static int diff_a_works = MAYBE; /* TRUE when "diff -a" works, FALSE when it
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59 doesn't work, MAYBE when not checked yet */
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60 #if defined(MSWIN) || defined(MSDOS)
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61 static int diff_bin_works = MAYBE; /* TRUE when "diff --binary" works, FALSE
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62 when it doesn't work, MAYBE when not
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63 checked yet */
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64 #endif
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65
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66 static int diff_buf_idx __ARGS((buf_T *buf));
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67 static void diff_check_unchanged __ARGS((diff_T *dp));
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68 static int diff_check_sanity __ARGS((diff_T *dp));
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69 static void diff_redraw __ARGS((int dofold));
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70 static int diff_write __ARGS((buf_T *buf, char_u *fname));
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71 static void diff_file __ARGS((char_u *tmp_orig, char_u *tmp_new, char_u *tmp_diff));
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72 static void diff_clear __ARGS((void));
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73 static int diff_equal_entry __ARGS((diff_T *dp, int idx1, int idx2));
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74 static int diff_cmp __ARGS((char_u *s1, char_u *s2));
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75 #ifdef FEAT_FOLDING
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76 static void diff_fold_update __ARGS((diff_T *dp, int skip_idx));
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77 #endif
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78 static void diff_read __ARGS((int idx_orig, int idx_new, char_u *fname));
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79 static void diff_copy_entry __ARGS((diff_T *dprev, diff_T *dp, int idx_orig, int idx_new));
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80 static diff_T *diff_alloc_new __ARGS((diff_T *dprev, diff_T *dp));
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81
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82 #ifndef USE_CR
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83 # define tag_fgets vim_fgets
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84 #endif
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85
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86 /*
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87 * Call this when a new buffer is being edited in the current window. curbuf
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88 * must already have been set.
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89 * Marks the current buffer as being part of the diff and requireing updating.
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90 * This must be done before any autocmd, because a command the uses info
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91 * about the screen contents.
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92 */
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93 void
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94 diff_new_buffer()
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95 {
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96 if (curwin->w_p_diff)
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97 diff_buf_add(curbuf);
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98 }
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99
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100 /*
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101 * Called when deleting or unloading a buffer: No longer make a diff with it.
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102 * Also called when 'diff' is reset in the last window showing a diff for a
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103 * buffer.
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104 */
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105 void
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106 diff_buf_delete(buf)
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107 buf_T *buf;
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108 {
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109 int i;
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110
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111 i = diff_buf_idx(buf);
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112 if (i != DB_COUNT)
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113 {
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114 diffbuf[i] = NULL;
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115 diff_invalid = TRUE;
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116 }
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117 }
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118
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119 /*
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16
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120 * Check if the current buffer should be added to or removed from the list of
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121 * diff buffers.
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122 */
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123 void
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124 diff_buf_adjust(win)
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125 win_T *win;
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126 {
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127 win_T *wp;
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128
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129 if (!win->w_p_diff)
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130 {
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131 /* When there is no window showing a diff for this buffer, remove
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132 * it from the diffs. */
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133 for (wp = firstwin; wp != NULL; wp = wp->w_next)
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134 if (wp->w_buffer == win->w_buffer && wp->w_p_diff)
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135 break;
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136 if (wp == NULL)
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137 diff_buf_delete(win->w_buffer);
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138 }
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139 else
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140 diff_buf_add(win->w_buffer);
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141 }
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142
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143 /*
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7
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144 * Add a buffer to make diffs for.
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145 */
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146 void
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147 diff_buf_add(buf)
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148 buf_T *buf;
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149 {
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150 int i;
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151
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152 if (diff_buf_idx(buf) != DB_COUNT)
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153 return; /* It's already there. */
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154
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155 for (i = 0; i < DB_COUNT; ++i)
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156 if (diffbuf[i] == NULL)
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157 {
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158 diffbuf[i] = buf;
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159 diff_invalid = TRUE;
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160 return;
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161 }
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162
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163 EMSGN(_("E96: Can not diff more than %ld buffers"), DB_COUNT);
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164 }
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165
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166 /*
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167 * Find buffer "buf" in the list of diff buffers.
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168 * Return its index or DB_COUNT if not found.
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169 */
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170 static int
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171 diff_buf_idx(buf)
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172 buf_T *buf;
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173 {
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174 int idx;
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175
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176 for (idx = 0; idx < DB_COUNT; ++idx)
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177 if (diffbuf[idx] == buf)
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178 break;
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179 return idx;
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180 }
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181
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182 /*
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183 * Mark the diff info as invalid, it will be updated when info is requested.
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184 */
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185 void
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186 diff_invalidate()
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187 {
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188 if (curwin->w_p_diff)
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189 {
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190 diff_invalid = TRUE;
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191 diff_redraw(TRUE);
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192 }
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193 }
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194
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195 /*
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196 * Called by mark_adjust(): update line numbers.
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197 * This attempts to update the changes as much as possible:
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198 * When inserting/deleting lines outside of existing change blocks, create a
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199 * new change block and update the line numbers in following blocks.
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200 * When inserting/deleting lines in existing change blocks, update them.
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201 */
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202 void
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203 diff_mark_adjust(line1, line2, amount, amount_after)
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204 linenr_T line1;
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205 linenr_T line2;
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206 long amount;
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207 long amount_after;
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208 {
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209 diff_T *dp;
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210 diff_T *dprev;
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211 diff_T *dnext;
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212 int idx;
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213 int i;
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214 int inserted, deleted;
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215 int n, off;
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216 linenr_T last;
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217 linenr_T lnum_deleted = line1; /* lnum of remaining deletion */
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218 int check_unchanged;
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219
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220 /* Find the index for the current buffer. */
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221 idx = diff_buf_idx(curbuf);
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222 if (idx == DB_COUNT)
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223 return; /* This buffer doesn't have diffs. */
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224
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225 if (line2 == MAXLNUM)
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226 {
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227 /* mark_adjust(99, MAXLNUM, 9, 0): insert lines */
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228 inserted = amount;
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229 deleted = 0;
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230 }
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231 else if (amount_after > 0)
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232 {
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233 /* mark_adjust(99, 98, MAXLNUM, 9): a change that inserts lines*/
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234 inserted = amount_after;
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235 deleted = 0;
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236 }
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237 else
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238 {
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239 /* mark_adjust(98, 99, MAXLNUM, -2): delete lines */
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240 inserted = 0;
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241 deleted = -amount_after;
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242 }
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243
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244 dprev = NULL;
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245 dp = first_diff;
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246 for (;;)
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247 {
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248 /* If the change is after the previous diff block and before the next
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249 * diff block, thus not touching an existing change, create a new diff
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250 * block. Don't do this when ex_diffgetput() is busy. */
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251 if ((dp == NULL || dp->df_lnum[idx] - 1 > line2
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252 || (line2 == MAXLNUM && dp->df_lnum[idx] > line1))
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253 && (dprev == NULL
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254 || dprev->df_lnum[idx] + dprev->df_count[idx] < line1)
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255 && !diff_busy)
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256 {
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257 dnext = diff_alloc_new(dprev, dp);
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258 if (dnext == NULL)
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259 return;
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260
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261 dnext->df_lnum[idx] = line1;
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262 dnext->df_count[idx] = inserted;
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263 for (i = 0; i < DB_COUNT; ++i)
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264 if (diffbuf[i] != NULL && i != idx)
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265 {
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266 if (dprev == NULL)
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267 dnext->df_lnum[i] = line1;
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268 else
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269 dnext->df_lnum[i] = line1
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270 + (dprev->df_lnum[i] + dprev->df_count[i])
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271 - (dprev->df_lnum[idx] + dprev->df_count[idx]);
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272 dnext->df_count[i] = deleted;
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273 }
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274 }
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275
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276 /* if at end of the list, quit */
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277 if (dp == NULL)
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278 break;
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279
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280 /*
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281 * Check for these situations:
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282 * 1 2 3
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283 * 1 2 3
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284 * line1 2 3 4 5
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285 * 2 3 4 5
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286 * 2 3 4 5
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287 * line2 2 3 4 5
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288 * 3 5 6
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289 * 3 5 6
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290 */
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291 /* compute last line of this change */
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292 last = dp->df_lnum[idx] + dp->df_count[idx] - 1;
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293
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294 /* 1. change completely above line1: nothing to do */
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295 if (last >= line1 - 1)
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296 {
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297 /* 6. change below line2: only adjust for amount_after; also when
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298 * "deleted" became zero when deleted all lines between two diffs */
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299 if (dp->df_lnum[idx] - (deleted + inserted != 0) > line2)
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300 {
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301 if (amount_after == 0)
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302 break; /* nothing left to change */
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303 dp->df_lnum[idx] += amount_after;
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304 }
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305 else
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306 {
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307 check_unchanged = FALSE;
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308
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309 /* 2. 3. 4. 5.: inserted/deleted lines touching this diff. */
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310 if (deleted > 0)
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311 {
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312 if (dp->df_lnum[idx] >= line1)
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313 {
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314 off = dp->df_lnum[idx] - lnum_deleted;
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315 if (last <= line2)
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316 {
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317 /* 4. delete all lines of diff */
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318 if (dp->df_next != NULL
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319 && dp->df_next->df_lnum[idx] - 1 <= line2)
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320 {
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321 /* delete continues in next diff, only do
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322 * lines until that one */
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323 n = dp->df_next->df_lnum[idx] - lnum_deleted;
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324 deleted -= n;
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325 n -= dp->df_count[idx];
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326 lnum_deleted = dp->df_next->df_lnum[idx];
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327 }
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328 else
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329 n = deleted - dp->df_count[idx];
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330 dp->df_count[idx] = 0;
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331 }
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332 else
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333 {
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334 /* 5. delete lines at or just before top of diff */
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335 n = off;
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336 dp->df_count[idx] -= line2 - dp->df_lnum[idx] + 1;
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337 check_unchanged = TRUE;
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338 }
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339 dp->df_lnum[idx] = line1;
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340 }
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341 else
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342 {
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343 off = 0;
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344 if (last < line2)
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345 {
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346 /* 2. delete at end of of diff */
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347 dp->df_count[idx] -= last - lnum_deleted + 1;
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348 if (dp->df_next != NULL
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349 && dp->df_next->df_lnum[idx] - 1 <= line2)
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350 {
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351 /* delete continues in next diff, only do
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352 * lines until that one */
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353 n = dp->df_next->df_lnum[idx] - 1 - last;
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354 deleted -= dp->df_next->df_lnum[idx]
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355 - lnum_deleted;
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356 lnum_deleted = dp->df_next->df_lnum[idx];
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357 }
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358 else
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359 n = line2 - last;
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360 check_unchanged = TRUE;
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361 }
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362 else
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363 {
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364 /* 3. delete lines inside the diff */
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365 n = 0;
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366 dp->df_count[idx] -= deleted;
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367 }
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368 }
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369
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370 for (i = 0; i < DB_COUNT; ++i)
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371 if (diffbuf[i] != NULL && i != idx)
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372 {
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373 dp->df_lnum[i] -= off;
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374 dp->df_count[i] += n;
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375 }
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376 }
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377 else
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378 {
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379 if (dp->df_lnum[idx] <= line1)
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380 {
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381 /* inserted lines somewhere in this diff */
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382 dp->df_count[idx] += inserted;
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383 check_unchanged = TRUE;
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384 }
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385 else
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386 /* inserted lines somewhere above this diff */
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387 dp->df_lnum[idx] += inserted;
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388 }
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389
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390 if (check_unchanged)
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391 /* Check if inserted lines are equal, may reduce the
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392 * size of the diff. TODO: also check for equal lines
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393 * in the middle and perhaps split the block. */
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394 diff_check_unchanged(dp);
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395 }
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396 }
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397
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398 /* check if this block touches the previous one, may merge them. */
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399 if (dprev != NULL && dprev->df_lnum[idx] + dprev->df_count[idx]
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400 == dp->df_lnum[idx])
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401 {
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402 for (i = 0; i < DB_COUNT; ++i)
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403 if (diffbuf[i] != NULL)
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404 dprev->df_count[i] += dp->df_count[i];
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405 dprev->df_next = dp->df_next;
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406 vim_free(dp);
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407 dp = dprev->df_next;
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408 }
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409 else
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410 {
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411 /* Advance to next entry. */
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412 dprev = dp;
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413 dp = dp->df_next;
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414 }
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415 }
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416
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417 dprev = NULL;
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|
418 dp = first_diff;
|
|
|
419 while (dp != NULL)
|
|
|
420 {
|
|
|
421 /* All counts are zero, remove this entry. */
|
|
|
422 for (i = 0; i < DB_COUNT; ++i)
|
|
|
423 if (diffbuf[i] != NULL && dp->df_count[i] != 0)
|
|
|
424 break;
|
|
|
425 if (i == DB_COUNT)
|
|
|
426 {
|
|
|
427 dnext = dp->df_next;
|
|
|
428 vim_free(dp);
|
|
|
429 dp = dnext;
|
|
|
430 if (dprev == NULL)
|
|
|
431 first_diff = dnext;
|
|
|
432 else
|
|
|
433 dprev->df_next = dnext;
|
|
|
434 }
|
|
|
435 else
|
|
|
436 {
|
|
|
437 /* Advance to next entry. */
|
|
|
438 dprev = dp;
|
|
|
439 dp = dp->df_next;
|
|
|
440 }
|
|
|
441
|
|
|
442 }
|
|
|
443 diff_redraw(TRUE);
|
|
|
444
|
|
|
445 /* Recompute the scroll binding, may remove or add filler lines (e.g.,
|
|
|
446 * when adding lines above w_topline). */
|
|
|
447 check_scrollbind((linenr_T)0, 0L);
|
|
|
448 }
|
|
|
449
|
|
|
450 /*
|
|
|
451 * Allocate a new diff block and link it between "dprev" and "dp".
|
|
|
452 */
|
|
|
453 static diff_T *
|
|
|
454 diff_alloc_new(dprev, dp)
|
|
|
455 diff_T *dprev;
|
|
|
456 diff_T *dp;
|
|
|
457 {
|
|
|
458 diff_T *dnew;
|
|
|
459
|
|
|
460 dnew = (diff_T *)alloc((unsigned)sizeof(diff_T));
|
|
|
461 if (dnew != NULL)
|
|
|
462 {
|
|
|
463 dnew->df_next = dp;
|
|
|
464 if (dprev == NULL)
|
|
|
465 first_diff = dnew;
|
|
|
466 else
|
|
|
467 dprev->df_next = dnew;
|
|
|
468 }
|
|
|
469 return dnew;
|
|
|
470 }
|
|
|
471
|
|
|
472 /*
|
|
|
473 * Check if the diff block "dp" can be made smaller for lines at the start and
|
|
|
474 * end that are equal. Called after inserting lines.
|
|
|
475 * This may result in a change where all buffers have zero lines, the caller
|
|
|
476 * must take care of removing it.
|
|
|
477 */
|
|
|
478 static void
|
|
|
479 diff_check_unchanged(dp)
|
|
|
480 diff_T *dp;
|
|
|
481 {
|
|
|
482 int i_org;
|
|
|
483 int i_new;
|
|
|
484 int off_org, off_new;
|
|
|
485 char_u *line_org;
|
|
|
486 int dir = FORWARD;
|
|
|
487
|
|
|
488 /* Find the first buffers, use it as the original, compare the other
|
|
|
489 * buffer lines against this one. */
|
|
|
490 for (i_org = 0; i_org < DB_COUNT; ++i_org)
|
|
|
491 if (diffbuf[i_org] != NULL)
|
|
|
492 break;
|
|
|
493 if (i_org == DB_COUNT) /* safety check */
|
|
|
494 return;
|
|
|
495
|
|
|
496 if (diff_check_sanity(dp) == FAIL)
|
|
|
497 return;
|
|
|
498
|
|
|
499 /* First check lines at the top, then at the bottom. */
|
|
|
500 off_org = 0;
|
|
|
501 off_new = 0;
|
|
|
502 for (;;)
|
|
|
503 {
|
|
|
504 /* Repeat until a line is found which is different or the number of
|
|
|
505 * lines has become zero. */
|
|
|
506 while (dp->df_count[i_org] > 0)
|
|
|
507 {
|
|
|
508 /* Copy the line, the next ml_get() will invalidate it. */
|
|
|
509 if (dir == BACKWARD)
|
|
|
510 off_org = dp->df_count[i_org] - 1;
|
|
|
511 line_org = vim_strsave(ml_get_buf(diffbuf[i_org],
|
|
|
512 dp->df_lnum[i_org] + off_org, FALSE));
|
|
|
513 if (line_org == NULL)
|
|
|
514 return;
|
|
|
515 for (i_new = i_org + 1; i_new < DB_COUNT; ++i_new)
|
|
|
516 {
|
|
|
517 if (diffbuf[i_new] == NULL)
|
|
|
518 continue;
|
|
|
519 if (dir == BACKWARD)
|
|
|
520 off_new = dp->df_count[i_new] - 1;
|
|
|
521 /* if other buffer doesn't have this line, it was inserted */
|
|
|
522 if (off_new < 0 || off_new >= dp->df_count[i_new])
|
|
|
523 break;
|
|
|
524 if (diff_cmp(line_org, ml_get_buf(diffbuf[i_new],
|
|
|
525 dp->df_lnum[i_new] + off_new, FALSE)) != 0)
|
|
|
526 break;
|
|
|
527 }
|
|
|
528 vim_free(line_org);
|
|
|
529
|
|
|
530 /* Stop when a line isn't equal in all diff buffers. */
|
|
|
531 if (i_new != DB_COUNT)
|
|
|
532 break;
|
|
|
533
|
|
|
534 /* Line matched in all buffers, remove it from the diff. */
|
|
|
535 for (i_new = i_org; i_new < DB_COUNT; ++i_new)
|
|
|
536 if (diffbuf[i_new] != NULL)
|
|
|
537 {
|
|
|
538 if (dir == FORWARD)
|
|
|
539 ++dp->df_lnum[i_new];
|
|
|
540 --dp->df_count[i_new];
|
|
|
541 }
|
|
|
542 }
|
|
|
543 if (dir == BACKWARD)
|
|
|
544 break;
|
|
|
545 dir = BACKWARD;
|
|
|
546 }
|
|
|
547 }
|
|
|
548
|
|
|
549 /*
|
|
|
550 * Check if a diff block doesn't contain invalid line numbers.
|
|
|
551 * This can happen when the diff program returns invalid results.
|
|
|
552 */
|
|
|
553 static int
|
|
|
554 diff_check_sanity(dp)
|
|
|
555 diff_T *dp;
|
|
|
556 {
|
|
|
557 int i;
|
|
|
558
|
|
|
559 for (i = 0; i < DB_COUNT; ++i)
|
|
|
560 if (diffbuf[i] != NULL)
|
|
|
561 if (dp->df_lnum[i] + dp->df_count[i] - 1
|
|
|
562 > diffbuf[i]->b_ml.ml_line_count)
|
|
|
563 return FAIL;
|
|
|
564 return OK;
|
|
|
565 }
|
|
|
566
|
|
|
567 /*
|
|
|
568 * Mark all diff buffers for redraw.
|
|
|
569 */
|
|
|
570 static void
|
|
|
571 diff_redraw(dofold)
|
|
|
572 int dofold; /* also recompute the folds */
|
|
|
573 {
|
|
|
574 win_T *wp;
|
|
|
575 int n;
|
|
|
576
|
|
|
577 for (wp = firstwin; wp != NULL; wp = wp->w_next)
|
|
|
578 if (wp->w_p_diff)
|
|
|
579 {
|
|
|
580 redraw_win_later(wp, NOT_VALID);
|
|
|
581 #ifdef FEAT_FOLDING
|
|
|
582 if (dofold && foldmethodIsDiff(wp))
|
|
|
583 foldUpdateAll(wp);
|
|
|
584 #endif
|
|
|
585 /* A change may have made filler lines invalid, need to take care
|
|
|
586 * of that for other windows. */
|
|
|
587 if (wp != curwin && wp->w_topfill > 0)
|
|
|
588 {
|
|
|
589 n = diff_check(wp, wp->w_topline);
|
|
|
590 if (wp->w_topfill > n)
|
|
|
591 wp->w_topfill = (n < 0 ? 0 : n);
|
|
|
592 }
|
|
|
593 }
|
|
|
594 }
|
|
|
595
|
|
|
596 /*
|
|
|
597 * Write buffer "buf" to file "name".
|
|
|
598 * Always use 'fileformat' set to "unix".
|
|
|
599 * Return FAIL for failure
|
|
|
600 */
|
|
|
601 static int
|
|
|
602 diff_write(buf, fname)
|
|
|
603 buf_T *buf;
|
|
|
604 char_u *fname;
|
|
|
605 {
|
|
|
606 int r;
|
|
|
607 char_u *save_ff;
|
|
|
608
|
|
|
609 save_ff = buf->b_p_ff;
|
|
|
610 buf->b_p_ff = vim_strsave((char_u *)FF_UNIX);
|
|
|
611 r = buf_write(buf, fname, NULL, (linenr_T)1, buf->b_ml.ml_line_count,
|
|
|
612 NULL, FALSE, FALSE, FALSE, TRUE);
|
|
|
613 free_string_option(buf->b_p_ff);
|
|
|
614 buf->b_p_ff = save_ff;
|
|
|
615 return r;
|
|
|
616 }
|
|
|
617
|
|
|
618 /*
|
|
|
619 * Completely update the diffs for the buffers involved.
|
|
|
620 * This uses the ordinary "diff" command.
|
|
|
621 * The buffers are written to a file, also for unmodified buffers (the file
|
|
|
622 * could have been produced by autocommands, e.g. the netrw plugin).
|
|
|
623 */
|
|
|
624 /*ARGSUSED*/
|
|
|
625 void
|
|
|
626 ex_diffupdate(eap)
|
|
|
627 exarg_T *eap;
|
|
|
628 {
|
|
|
629 buf_T *buf;
|
|
|
630 int idx_orig;
|
|
|
631 int idx_new;
|
|
|
632 char_u *tmp_orig;
|
|
|
633 char_u *tmp_new;
|
|
|
634 char_u *tmp_diff;
|
|
|
635 FILE *fd;
|
|
|
636 int ok;
|
|
|
637
|
|
|
638 /* Delete all diffblocks. */
|
|
|
639 diff_clear();
|
|
|
640 diff_invalid = FALSE;
|
|
|
641
|
|
|
642 /* Use the first buffer as the original text. */
|
|
|
643 for (idx_orig = 0; idx_orig < DB_COUNT; ++idx_orig)
|
|
|
644 if (diffbuf[idx_orig] != NULL)
|
|
|
645 break;
|
|
|
646 if (idx_orig == DB_COUNT)
|
|
|
647 return;
|
|
|
648
|
|
|
649 /* Only need to do something when there is another buffer. */
|
|
|
650 for (idx_new = idx_orig + 1; idx_new < DB_COUNT; ++idx_new)
|
|
|
651 if (diffbuf[idx_new] != NULL)
|
|
|
652 break;
|
|
|
653 if (idx_new == DB_COUNT)
|
|
|
654 return;
|
|
|
655
|
|
|
656 /* We need three temp file names. */
|
|
|
657 tmp_orig = vim_tempname('o');
|
|
|
658 tmp_new = vim_tempname('n');
|
|
|
659 tmp_diff = vim_tempname('d');
|
|
|
660 if (tmp_orig == NULL || tmp_new == NULL || tmp_diff == NULL)
|
|
|
661 goto theend;
|
|
|
662
|
|
|
663 /*
|
|
|
664 * Do a quick test if "diff" really works. Otherwise it looks like there
|
|
|
665 * are no differences. Can't use the return value, it's non-zero when
|
|
|
666 * there are differences.
|
|
|
667 * May try twice, first with "-a" and then without.
|
|
|
668 */
|
|
|
669 for (;;)
|
|
|
670 {
|
|
|
671 ok = FALSE;
|
|
|
672 fd = fopen((char *)tmp_orig, "w");
|
|
|
673 if (fd != NULL)
|
|
|
674 {
|
|
|
675 fwrite("line1\n", (size_t)6, (size_t)1, fd);
|
|
|
676 fclose(fd);
|
|
|
677 fd = fopen((char *)tmp_new, "w");
|
|
|
678 if (fd != NULL)
|
|
|
679 {
|
|
|
680 fwrite("line2\n", (size_t)6, (size_t)1, fd);
|
|
|
681 fclose(fd);
|
|
|
682 diff_file(tmp_orig, tmp_new, tmp_diff);
|
|
|
683 fd = fopen((char *)tmp_diff, "r");
|
|
|
684 if (fd != NULL)
|
|
|
685 {
|
|
|
686 char_u linebuf[LBUFLEN];
|
|
|
687
|
|
|
688 for (;;)
|
|
|
689 {
|
|
|
690 /* There must be a line that contains "1c1". */
|
|
|
691 if (tag_fgets(linebuf, LBUFLEN, fd))
|
|
|
692 break;
|
|
|
693 if (STRNCMP(linebuf, "1c1", 3) == 0)
|
|
|
694 ok = TRUE;
|
|
|
695 }
|
|
|
696 fclose(fd);
|
|
|
697 }
|
|
|
698 mch_remove(tmp_diff);
|
|
|
699 mch_remove(tmp_new);
|
|
|
700 }
|
|
|
701 mch_remove(tmp_orig);
|
|
|
702 }
|
|
|
703
|
|
|
704 #ifdef FEAT_EVAL
|
|
|
705 /* When using 'diffexpr' break here. */
|
|
|
706 if (*p_dex != NUL)
|
|
|
707 break;
|
|
|
708 #endif
|
|
|
709
|
|
|
710 #if defined(MSWIN) || defined(MSDOS)
|
|
|
711 /* If the "-a" argument works, also check if "--binary" works. */
|
|
|
712 if (ok && diff_a_works == MAYBE && diff_bin_works == MAYBE)
|
|
|
713 {
|
|
|
714 diff_a_works = TRUE;
|
|
|
715 diff_bin_works = TRUE;
|
|
|
716 continue;
|
|
|
717 }
|
|
|
718 if (!ok && diff_a_works == TRUE && diff_bin_works == TRUE)
|
|
|
719 {
|
|
|
720 /* Tried --binary, but it failed. "-a" works though. */
|
|
|
721 diff_bin_works = FALSE;
|
|
|
722 ok = TRUE;
|
|
|
723 }
|
|
|
724 #endif
|
|
|
725
|
|
|
726 /* If we checked if "-a" works already, break here. */
|
|
|
727 if (diff_a_works != MAYBE)
|
|
|
728 break;
|
|
|
729 diff_a_works = ok;
|
|
|
730
|
|
|
731 /* If "-a" works break here, otherwise retry without "-a". */
|
|
|
732 if (ok)
|
|
|
733 break;
|
|
|
734 }
|
|
|
735 if (!ok)
|
|
|
736 {
|
|
|
737 EMSG(_("E97: Cannot create diffs"));
|
|
|
738 diff_a_works = MAYBE;
|
|
|
739 #if defined(MSWIN) || defined(MSDOS)
|
|
|
740 diff_bin_works = MAYBE;
|
|
|
741 #endif
|
|
|
742 goto theend;
|
|
|
743 }
|
|
|
744
|
|
|
745 /* Write the first buffer to a tempfile. */
|
|
|
746 buf = diffbuf[idx_orig];
|
|
|
747 if (diff_write(buf, tmp_orig) == FAIL)
|
|
|
748 goto theend;
|
|
|
749
|
|
|
750 /* Make a difference between the first buffer and every other. */
|
|
|
751 for (idx_new = idx_orig + 1; idx_new < DB_COUNT; ++idx_new)
|
|
|
752 {
|
|
|
753 buf = diffbuf[idx_new];
|
|
|
754 if (buf == NULL)
|
|
|
755 continue;
|
|
|
756 if (diff_write(buf, tmp_new) == FAIL)
|
|
|
757 continue;
|
|
|
758 diff_file(tmp_orig, tmp_new, tmp_diff);
|
|
|
759
|
|
|
760 /* Read the diff output and add each entry to the diff list. */
|
|
|
761 diff_read(idx_orig, idx_new, tmp_diff);
|
|
|
762 mch_remove(tmp_diff);
|
|
|
763 mch_remove(tmp_new);
|
|
|
764 }
|
|
|
765 mch_remove(tmp_orig);
|
|
|
766
|
|
|
767 diff_redraw(TRUE);
|
|
|
768
|
|
|
769 theend:
|
|
|
770 vim_free(tmp_orig);
|
|
|
771 vim_free(tmp_new);
|
|
|
772 vim_free(tmp_diff);
|
|
|
773 }
|
|
|
774
|
|
|
775 /*
|
|
|
776 * Make a diff between files "tmp_orig" and "tmp_new", results in "tmp_diff".
|
|
|
777 */
|
|
|
778 static void
|
|
|
779 diff_file(tmp_orig, tmp_new, tmp_diff)
|
|
|
780 char_u *tmp_orig;
|
|
|
781 char_u *tmp_new;
|
|
|
782 char_u *tmp_diff;
|
|
|
783 {
|
|
|
784 char_u *cmd;
|
|
|
785
|
|
|
786 #ifdef FEAT_EVAL
|
|
|
787 if (*p_dex != NUL)
|
|
|
788 /* Use 'diffexpr' to generate the diff file. */
|
|
|
789 eval_diff(tmp_orig, tmp_new, tmp_diff);
|
|
|
790 else
|
|
|
791 #endif
|
|
|
792 {
|
|
|
793 cmd = alloc((unsigned)(STRLEN(tmp_orig) + STRLEN(tmp_new)
|
|
|
794 + STRLEN(tmp_diff) + STRLEN(p_srr) + 27));
|
|
|
795 if (cmd != NULL)
|
|
|
796 {
|
|
|
797 /* Build the diff command and execute it. Always use -a, binary
|
|
|
798 * differences are of no use. Ignore errors, diff returns
|
|
|
799 * non-zero when differences have been found. */
|
|
|
800 sprintf((char *)cmd, "diff %s%s%s%s%s %s",
|
|
|
801 diff_a_works == FALSE ? "" : "-a ",
|
|
|
802 #if defined(MSWIN) || defined(MSDOS)
|
|
|
803 diff_bin_works == TRUE ? "--binary " : "",
|
|
|
804 #else
|
|
|
805 "",
|
|
|
806 #endif
|
|
|
807 (diff_flags & DIFF_IWHITE) ? "-b " : "",
|
|
|
808 (diff_flags & DIFF_ICASE) ? "-i " : "",
|
|
|
809 tmp_orig, tmp_new);
|
|
|
810 append_redir(cmd, p_srr, tmp_diff);
|
|
|
811 (void)call_shell(cmd, SHELL_FILTER|SHELL_SILENT|SHELL_DOOUT);
|
|
|
812 vim_free(cmd);
|
|
|
813 }
|
|
|
814 }
|
|
|
815 }
|
|
|
816
|
|
|
817 /*
|
|
|
818 * Create a new version of a file from the current buffer and a diff file.
|
|
|
819 * The buffer is written to a file, also for unmodified buffers (the file
|
|
|
820 * could have been produced by autocommands, e.g. the netrw plugin).
|
|
|
821 */
|
|
|
822 void
|
|
|
823 ex_diffpatch(eap)
|
|
|
824 exarg_T *eap;
|
|
|
825 {
|
|
|
826 char_u *tmp_orig; /* name of original temp file */
|
|
|
827 char_u *tmp_new; /* name of patched temp file */
|
|
|
828 char_u *buf = NULL;
|
|
|
829 win_T *old_curwin = curwin;
|
|
|
830 char_u *newname = NULL; /* name of patched file buffer */
|
|
|
831 #ifdef UNIX
|
|
|
832 char_u dirbuf[MAXPATHL];
|
|
|
833 char_u *fullname = NULL;
|
|
|
834 #endif
|
|
|
835 #ifdef FEAT_BROWSE
|
|
|
836 char_u *browseFile = NULL;
|
|
|
837 int browse_flag = cmdmod.browse;
|
|
|
838 #endif
|
|
|
839
|
|
|
840 #ifdef FEAT_BROWSE
|
|
|
841 if (cmdmod.browse)
|
|
|
842 {
|
|
|
843 browseFile = do_browse(FALSE, (char_u *)_("Patch file"),
|
|
|
844 eap->arg, NULL, NULL, BROWSE_FILTER_ALL_FILES, NULL);
|
|
|
845 if (browseFile == NULL)
|
|
|
846 return; /* operation cancelled */
|
|
|
847 eap->arg = browseFile;
|
|
|
848 cmdmod.browse = FALSE; /* don't let do_ecmd() browse again */
|
|
|
849 }
|
|
|
850 #endif
|
|
|
851
|
|
|
852 /* We need two temp file names. */
|
|
|
853 tmp_orig = vim_tempname('o');
|
|
|
854 tmp_new = vim_tempname('n');
|
|
|
855 if (tmp_orig == NULL || tmp_new == NULL)
|
|
|
856 goto theend;
|
|
|
857
|
|
|
858 /* Write the current buffer to "tmp_orig". */
|
|
|
859 if (buf_write(curbuf, tmp_orig, NULL,
|
|
|
860 (linenr_T)1, curbuf->b_ml.ml_line_count,
|
|
|
861 NULL, FALSE, FALSE, FALSE, TRUE) == FAIL)
|
|
|
862 goto theend;
|
|
|
863
|
|
|
864 #ifdef UNIX
|
|
|
865 /* Get the absolute path of the patchfile, changing directory below. */
|
|
|
866 fullname = FullName_save(eap->arg, FALSE);
|
|
|
867 #endif
|
|
|
868 buf = alloc((unsigned)(STRLEN(tmp_orig) + (
|
|
|
869 # ifdef UNIX
|
|
|
870 fullname != NULL ? STRLEN(fullname) :
|
|
|
871 # endif
|
|
|
872 STRLEN(eap->arg)) + STRLEN(tmp_new) + 16));
|
|
|
873 if (buf == NULL)
|
|
|
874 goto theend;
|
|
|
875
|
|
|
876 #ifdef UNIX
|
|
|
877 /* Temporaraly chdir to /tmp, to avoid patching files in the current
|
|
|
878 * directory when the patch file contains more than one patch. When we
|
|
|
879 * have our own temp dir use that instead, it will be cleaned up when we
|
|
|
880 * exit (any .rej files created). Don't change directory if we can't
|
|
|
881 * return to the current. */
|
|
|
882 if (mch_dirname(dirbuf, MAXPATHL) != OK || mch_chdir((char *)dirbuf) != 0)
|
|
|
883 dirbuf[0] = NUL;
|
|
|
884 else
|
|
|
885 {
|
|
|
886 # ifdef TEMPDIRNAMES
|
|
|
887 if (vim_tempdir != NULL)
|
|
|
888 mch_chdir((char *)vim_tempdir);
|
|
|
889 else
|
|
|
890 # endif
|
|
|
891 mch_chdir("/tmp");
|
|
|
892 shorten_fnames(TRUE);
|
|
|
893 }
|
|
|
894 #endif
|
|
|
895
|
|
|
896 #ifdef FEAT_EVAL
|
|
|
897 if (*p_pex != NUL)
|
|
|
898 /* Use 'patchexpr' to generate the new file. */
|
|
|
899 eval_patch(tmp_orig,
|
|
|
900 # ifdef UNIX
|
|
|
901 fullname != NULL ? fullname :
|
|
|
902 # endif
|
|
|
903 eap->arg, tmp_new);
|
|
|
904 else
|
|
|
905 #endif
|
|
|
906 {
|
|
|
907 /* Build the patch command and execute it. Ignore errors. Switch to
|
|
|
908 * cooked mode to allow the user to respond to prompts. */
|
|
|
909 sprintf((char *)buf, "patch -o %s %s < \"%s\"", tmp_new, tmp_orig,
|
|
|
910 # ifdef UNIX
|
|
|
911 fullname != NULL ? fullname :
|
|
|
912 # endif
|
|
|
913 eap->arg);
|
|
|
914 (void)call_shell(buf, SHELL_FILTER | SHELL_COOKED);
|
|
|
915 }
|
|
|
916
|
|
|
917 #ifdef UNIX
|
|
|
918 if (dirbuf[0] != NUL)
|
|
|
919 {
|
|
|
920 if (mch_chdir((char *)dirbuf) != 0)
|
|
|
921 EMSG(_(e_prev_dir));
|
|
|
922 shorten_fnames(TRUE);
|
|
|
923 }
|
|
|
924 #endif
|
|
|
925
|
|
|
926 /* patch probably has written over the screen */
|
|
|
927 redraw_later(CLEAR);
|
|
|
928
|
|
|
929 /* Delete any .orig or .rej file created. */
|
|
|
930 STRCPY(buf, tmp_new);
|
|
|
931 STRCAT(buf, ".orig");
|
|
|
932 mch_remove(buf);
|
|
|
933 STRCPY(buf, tmp_new);
|
|
|
934 STRCAT(buf, ".rej");
|
|
|
935 mch_remove(buf);
|
|
|
936
|
|
|
937 if (curbuf->b_fname != NULL)
|
|
|
938 {
|
|
|
939 newname = vim_strnsave(curbuf->b_fname,
|
|
|
940 (int)(STRLEN(curbuf->b_fname) + 4));
|
|
|
941 if (newname != NULL)
|
|
|
942 STRCAT(newname, ".new");
|
|
|
943 }
|
|
|
944
|
|
|
945 #ifdef FEAT_GUI
|
|
|
946 need_mouse_correct = TRUE;
|
|
|
947 #endif
|
|
|
948 if (win_split(0, 0) != FAIL)
|
|
|
949 {
|
|
|
950 /* Pretend it was a ":split fname" command */
|
|
|
951 eap->cmdidx = CMD_split;
|
|
|
952 eap->arg = tmp_new;
|
|
|
953 do_exedit(eap, old_curwin);
|
|
|
954
|
|
|
955 if (curwin != old_curwin) /* split must have worked */
|
|
|
956 {
|
|
|
957 /* Set 'diff', 'scrollbind' on and 'wrap' off. */
|
|
|
958 diff_win_options(curwin, TRUE);
|
|
|
959 diff_win_options(old_curwin, TRUE);
|
|
|
960
|
|
|
961 if (newname != NULL)
|
|
|
962 {
|
|
|
963 /* do a ":file filename.new" on the patched buffer */
|
|
|
964 eap->arg = newname;
|
|
|
965 ex_file(eap);
|
|
|
966
|
|
|
967 #ifdef FEAT_AUTOCMD
|
|
|
968 /* Do filetype detection with the new name. */
|
|
|
969 do_cmdline_cmd((char_u *)":doau filetypedetect BufRead");
|
|
|
970 #endif
|
|
|
971 }
|
|
|
972 }
|
|
|
973 }
|
|
|
974
|
|
|
975 theend:
|
|
|
976 if (tmp_orig != NULL)
|
|
|
977 mch_remove(tmp_orig);
|
|
|
978 vim_free(tmp_orig);
|
|
|
979 if (tmp_new != NULL)
|
|
|
980 mch_remove(tmp_new);
|
|
|
981 vim_free(tmp_new);
|
|
|
982 vim_free(newname);
|
|
|
983 vim_free(buf);
|
|
|
984 #ifdef UNIX
|
|
|
985 vim_free(fullname);
|
|
|
986 #endif
|
|
|
987 #ifdef FEAT_BROWSE
|
|
|
988 vim_free(browseFile);
|
|
|
989 cmdmod.browse = browse_flag;
|
|
|
990 #endif
|
|
|
991 }
|
|
|
992
|
|
|
993 /*
|
|
|
994 * Split the window and edit another file, setting options to show the diffs.
|
|
|
995 */
|
|
|
996 void
|
|
|
997 ex_diffsplit(eap)
|
|
|
998 exarg_T *eap;
|
|
|
999 {
|
|
|
1000 win_T *old_curwin = curwin;
|
|
|
1001
|
|
|
1002 #ifdef FEAT_GUI
|
|
|
1003 need_mouse_correct = TRUE;
|
|
|
1004 #endif
|
|
|
1005 if (win_split(0, 0) != FAIL)
|
|
|
1006 {
|
|
|
1007 /* Pretend it was a ":split fname" command */
|
|
|
1008 eap->cmdidx = CMD_split;
|
|
|
1009 do_exedit(eap, old_curwin);
|
|
|
1010
|
|
|
1011 if (curwin != old_curwin) /* split must have worked */
|
|
|
1012 {
|
|
|
1013 /* Set 'diff', 'scrollbind' on and 'wrap' off. */
|
|
|
1014 diff_win_options(curwin, TRUE);
|
|
|
1015 diff_win_options(old_curwin, TRUE);
|
|
|
1016 }
|
|
|
1017 }
|
|
|
1018 }
|
|
|
1019
|
|
|
1020 /*
|
|
|
1021 * Set options to show difs for the current window.
|
|
|
1022 */
|
|
|
1023 /*ARGSUSED*/
|
|
|
1024 void
|
|
|
1025 ex_diffthis(eap)
|
|
|
1026 exarg_T *eap;
|
|
|
1027 {
|
|
|
1028 /* Set 'diff', 'scrollbind' on and 'wrap' off. */
|
|
|
1029 diff_win_options(curwin, TRUE);
|
|
|
1030 }
|
|
|
1031
|
|
|
1032 /*
|
|
|
1033 * Set options in window "wp" for diff mode.
|
|
|
1034 */
|
|
|
1035 void
|
|
|
1036 diff_win_options(wp, addbuf)
|
|
|
1037 win_T *wp;
|
|
|
1038 int addbuf; /* Add buffer to diff. */
|
|
|
1039 {
|
|
|
1040 wp->w_p_diff = TRUE;
|
|
|
1041 wp->w_p_scb = TRUE;
|
|
|
1042 wp->w_p_wrap = FALSE;
|
|
|
1043 # ifdef FEAT_FOLDING
|
|
|
1044 {
|
|
|
1045 win_T *old_curwin = curwin;
|
|
|
1046
|
|
|
1047 curwin = wp;
|
|
|
1048 curbuf = curwin->w_buffer;
|
|
|
1049 set_string_option_direct((char_u *)"fdm", -1, (char_u *)"diff",
|
|
|
1050 OPT_LOCAL|OPT_FREE);
|
|
|
1051 curwin = old_curwin;
|
|
|
1052 curbuf = curwin->w_buffer;
|
|
|
1053 wp->w_p_fdc = 2;
|
|
|
1054 wp->w_p_fen = TRUE;
|
|
|
1055 wp->w_p_fdl = 0;
|
|
|
1056 foldUpdateAll(wp);
|
|
16
|
1057 /* make sure topline is not halfway a fold */
|
|
|
1058 changed_window_setting_win(wp);
|
|
7
|
1059 }
|
|
|
1060 # endif
|
|
|
1061 #ifdef FEAT_SCROLLBIND
|
|
|
1062 if (vim_strchr(p_sbo, 'h') == NULL)
|
|
|
1063 do_cmdline_cmd((char_u *)"set sbo+=hor");
|
|
|
1064 #endif
|
|
|
1065
|
|
|
1066 if (addbuf)
|
|
|
1067 diff_buf_add(wp->w_buffer);
|
|
|
1068 redraw_win_later(wp, NOT_VALID);
|
|
|
1069 }
|
|
|
1070
|
|
|
1071 /*
|
|
16
|
1072 * Set options not to show diffs. For the current window or all windows.
|
|
|
1073 */
|
|
|
1074 void
|
|
|
1075 ex_diffoff(eap)
|
|
|
1076 exarg_T *eap;
|
|
|
1077 {
|
|
|
1078 win_T *wp;
|
|
|
1079 win_T *old_curwin = curwin;
|
|
|
1080 #ifdef FEAT_SCROLLBIND
|
|
|
1081 int diffwin = FALSE;
|
|
|
1082 #endif
|
|
|
1083
|
|
|
1084 for (wp = firstwin; wp != NULL; wp = wp->w_next)
|
|
|
1085 {
|
|
|
1086 if (wp == curwin || eap->forceit)
|
|
|
1087 {
|
|
|
1088 /* Set 'diff', 'scrollbind' off and 'wrap' on. */
|
|
|
1089 wp->w_p_diff = FALSE;
|
|
|
1090 wp->w_p_scb = FALSE;
|
|
|
1091 wp->w_p_wrap = TRUE;
|
|
|
1092 #ifdef FEAT_FOLDING
|
|
|
1093 curwin = wp;
|
|
|
1094 curbuf = curwin->w_buffer;
|
|
|
1095 set_string_option_direct((char_u *)"fdm", -1,
|
|
|
1096 (char_u *)"manual", OPT_LOCAL|OPT_FREE);
|
|
|
1097 curwin = old_curwin;
|
|
|
1098 curbuf = curwin->w_buffer;
|
|
|
1099 wp->w_p_fdc = 0;
|
|
|
1100 wp->w_p_fen = FALSE;
|
|
|
1101 wp->w_p_fdl = 0;
|
|
|
1102 foldUpdateAll(wp);
|
|
|
1103 /* make sure topline is not halfway a fold */
|
|
|
1104 changed_window_setting_win(wp);
|
|
|
1105 #endif
|
|
|
1106 diff_buf_adjust(wp);
|
|
|
1107 }
|
|
|
1108 #ifdef FEAT_SCROLLBIND
|
|
|
1109 diffwin |= wp->w_p_diff;
|
|
|
1110 #endif
|
|
|
1111 }
|
|
|
1112
|
|
|
1113 #ifdef FEAT_SCROLLBIND
|
|
|
1114 /* Remove "hor" from from 'scrollopt' if there are no diff windows left. */
|
|
|
1115 if (!diffwin && vim_strchr(p_sbo, 'h') != NULL)
|
|
|
1116 do_cmdline_cmd((char_u *)"set sbo-=hor");
|
|
|
1117 #endif
|
|
|
1118 }
|
|
|
1119
|
|
|
1120 /*
|
|
7
|
1121 * Read the diff output and add each entry to the diff list.
|
|
|
1122 */
|
|
|
1123 static void
|
|
|
1124 diff_read(idx_orig, idx_new, fname)
|
|
|
1125 int idx_orig; /* idx of original file */
|
|
|
1126 int idx_new; /* idx of new file */
|
|
|
1127 char_u *fname; /* name of diff output file */
|
|
|
1128 {
|
|
|
1129 FILE *fd;
|
|
|
1130 diff_T *dprev = NULL;
|
|
|
1131 diff_T *dp = first_diff;
|
|
|
1132 diff_T *dn, *dpl;
|
|
|
1133 long f1, l1, f2, l2;
|
|
|
1134 char_u linebuf[LBUFLEN]; /* only need to hold the diff line */
|
|
|
1135 int difftype;
|
|
|
1136 char_u *p;
|
|
|
1137 long off;
|
|
|
1138 int i;
|
|
|
1139 linenr_T lnum_orig, lnum_new;
|
|
|
1140 long count_orig, count_new;
|
|
|
1141 int notset = TRUE; /* block "*dp" not set yet */
|
|
|
1142
|
|
|
1143 fd = fopen((char *)fname, "r");
|
|
|
1144 if (fd == NULL)
|
|
|
1145 {
|
|
|
1146 EMSG(_("E98: Cannot read diff output"));
|
|
|
1147 return;
|
|
|
1148 }
|
|
|
1149
|
|
|
1150 for (;;)
|
|
|
1151 {
|
|
|
1152 if (tag_fgets(linebuf, LBUFLEN, fd))
|
|
|
1153 break; /* end of file */
|
|
|
1154 if (!isdigit(*linebuf))
|
|
|
1155 continue; /* not the start of a diff block */
|
|
|
1156
|
|
|
1157 /* This line must be one of three formats:
|
|
|
1158 * {first}[,{last}]c{first}[,{last}]
|
|
|
1159 * {first}a{first}[,{last}]
|
|
|
1160 * {first}[,{last}]d{first}
|
|
|
1161 */
|
|
|
1162 p = linebuf;
|
|
|
1163 f1 = getdigits(&p);
|
|
|
1164 if (*p == ',')
|
|
|
1165 {
|
|
|
1166 ++p;
|
|
|
1167 l1 = getdigits(&p);
|
|
|
1168 }
|
|
|
1169 else
|
|
|
1170 l1 = f1;
|
|
|
1171 if (*p != 'a' && *p != 'c' && *p != 'd')
|
|
|
1172 continue; /* invalid diff format */
|
|
|
1173 difftype = *p++;
|
|
|
1174 f2 = getdigits(&p);
|
|
|
1175 if (*p == ',')
|
|
|
1176 {
|
|
|
1177 ++p;
|
|
|
1178 l2 = getdigits(&p);
|
|
|
1179 }
|
|
|
1180 else
|
|
|
1181 l2 = f2;
|
|
|
1182 if (l1 < f1 || l2 < f2)
|
|
|
1183 continue; /* invalid line range */
|
|
|
1184
|
|
|
1185 if (difftype == 'a')
|
|
|
1186 {
|
|
|
1187 lnum_orig = f1 + 1;
|
|
|
1188 count_orig = 0;
|
|
|
1189 }
|
|
|
1190 else
|
|
|
1191 {
|
|
|
1192 lnum_orig = f1;
|
|
|
1193 count_orig = l1 - f1 + 1;
|
|
|
1194 }
|
|
|
1195 if (difftype == 'd')
|
|
|
1196 {
|
|
|
1197 lnum_new = f2 + 1;
|
|
|
1198 count_new = 0;
|
|
|
1199 }
|
|
|
1200 else
|
|
|
1201 {
|
|
|
1202 lnum_new = f2;
|
|
|
1203 count_new = l2 - f2 + 1;
|
|
|
1204 }
|
|
|
1205
|
|
|
1206 /* Go over blocks before the change, for which orig and new are equal.
|
|
|
1207 * Copy blocks from orig to new. */
|
|
|
1208 while (dp != NULL
|
|
|
1209 && lnum_orig > dp->df_lnum[idx_orig] + dp->df_count[idx_orig])
|
|
|
1210 {
|
|
|
1211 if (notset)
|
|
|
1212 diff_copy_entry(dprev, dp, idx_orig, idx_new);
|
|
|
1213 dprev = dp;
|
|
|
1214 dp = dp->df_next;
|
|
|
1215 notset = TRUE;
|
|
|
1216 }
|
|
|
1217
|
|
|
1218 if (dp != NULL
|
|
|
1219 && lnum_orig <= dp->df_lnum[idx_orig] + dp->df_count[idx_orig]
|
|
|
1220 && lnum_orig + count_orig >= dp->df_lnum[idx_orig])
|
|
|
1221 {
|
|
|
1222 /* New block overlaps with existing block(s).
|
|
|
1223 * First find last block that overlaps. */
|
|
|
1224 for (dpl = dp; dpl->df_next != NULL; dpl = dpl->df_next)
|
|
|
1225 if (lnum_orig + count_orig < dpl->df_next->df_lnum[idx_orig])
|
|
|
1226 break;
|
|
|
1227
|
|
|
1228 /* If the newly found block starts before the old one, set the
|
|
|
1229 * start back a number of lines. */
|
|
|
1230 off = dp->df_lnum[idx_orig] - lnum_orig;
|
|
|
1231 if (off > 0)
|
|
|
1232 {
|
|
|
1233 for (i = idx_orig; i < idx_new; ++i)
|
|
|
1234 if (diffbuf[i] != NULL)
|
|
|
1235 dp->df_lnum[i] -= off;
|
|
|
1236 dp->df_lnum[idx_new] = lnum_new;
|
|
|
1237 dp->df_count[idx_new] = count_new;
|
|
|
1238 }
|
|
|
1239 else if (notset)
|
|
|
1240 {
|
|
|
1241 /* new block inside existing one, adjust new block */
|
|
|
1242 dp->df_lnum[idx_new] = lnum_new + off;
|
|
|
1243 dp->df_count[idx_new] = count_new - off;
|
|
|
1244 }
|
|
|
1245 else
|
|
|
1246 /* second overlap of new block with existing block */
|
|
|
1247 dp->df_count[idx_new] += count_new - count_orig;
|
|
|
1248
|
|
|
1249 /* Adjust the size of the block to include all the lines to the
|
|
|
1250 * end of the existing block or the new diff, whatever ends last. */
|
|
|
1251 off = (lnum_orig + count_orig)
|
|
|
1252 - (dpl->df_lnum[idx_orig] + dpl->df_count[idx_orig]);
|
|
|
1253 if (off < 0)
|
|
|
1254 {
|
|
|
1255 /* new change ends in existing block, adjust the end if not
|
|
|
1256 * done already */
|
|
|
1257 if (notset)
|
|
|
1258 dp->df_count[idx_new] += -off;
|
|
|
1259 off = 0;
|
|
|
1260 }
|
|
|
1261 for (i = idx_orig; i < idx_new + !notset; ++i)
|
|
|
1262 if (diffbuf[i] != NULL)
|
|
|
1263 dp->df_count[i] = dpl->df_lnum[i] + dpl->df_count[i]
|
|
|
1264 - dp->df_lnum[i] + off;
|
|
|
1265
|
|
|
1266 /* Delete the diff blocks that have been merged into one. */
|
|
|
1267 dn = dp->df_next;
|
|
|
1268 dp->df_next = dpl->df_next;
|
|
|
1269 while (dn != dp->df_next)
|
|
|
1270 {
|
|
|
1271 dpl = dn->df_next;
|
|
|
1272 vim_free(dn);
|
|
|
1273 dn = dpl;
|
|
|
1274 }
|
|
|
1275 }
|
|
|
1276 else
|
|
|
1277 {
|
|
|
1278 /* Allocate a new diffblock. */
|
|
|
1279 dp = diff_alloc_new(dprev, dp);
|
|
|
1280 if (dp == NULL)
|
|
|
1281 return;
|
|
|
1282
|
|
|
1283 dp->df_lnum[idx_orig] = lnum_orig;
|
|
|
1284 dp->df_count[idx_orig] = count_orig;
|
|
|
1285 dp->df_lnum[idx_new] = lnum_new;
|
|
|
1286 dp->df_count[idx_new] = count_new;
|
|
|
1287
|
|
|
1288 /* Set values for other buffers, these must be equal to the
|
|
|
1289 * original buffer, otherwise there would have been a change
|
|
|
1290 * already. */
|
|
|
1291 for (i = idx_orig + 1; i < idx_new; ++i)
|
|
|
1292 if (diffbuf[i] != NULL)
|
|
|
1293 diff_copy_entry(dprev, dp, idx_orig, i);
|
|
|
1294 }
|
|
|
1295 notset = FALSE; /* "*dp" has been set */
|
|
|
1296 }
|
|
|
1297
|
|
|
1298 /* for remaining diff blocks orig and new are equal */
|
|
|
1299 while (dp != NULL)
|
|
|
1300 {
|
|
|
1301 if (notset)
|
|
|
1302 diff_copy_entry(dprev, dp, idx_orig, idx_new);
|
|
|
1303 dprev = dp;
|
|
|
1304 dp = dp->df_next;
|
|
|
1305 notset = TRUE;
|
|
|
1306 }
|
|
|
1307
|
|
|
1308 fclose(fd);
|
|
|
1309 }
|
|
|
1310
|
|
|
1311 /*
|
|
|
1312 * Copy an entry at "dp" from "idx_orig" to "idx_new".
|
|
|
1313 */
|
|
|
1314 static void
|
|
|
1315 diff_copy_entry(dprev, dp, idx_orig, idx_new)
|
|
|
1316 diff_T *dprev;
|
|
|
1317 diff_T *dp;
|
|
|
1318 int idx_orig;
|
|
|
1319 int idx_new;
|
|
|
1320 {
|
|
|
1321 long off;
|
|
|
1322
|
|
|
1323 if (dprev == NULL)
|
|
|
1324 off = 0;
|
|
|
1325 else
|
|
|
1326 off = (dprev->df_lnum[idx_orig] + dprev->df_count[idx_orig])
|
|
|
1327 - (dprev->df_lnum[idx_new] + dprev->df_count[idx_new]);
|
|
|
1328 dp->df_lnum[idx_new] = dp->df_lnum[idx_orig] - off;
|
|
|
1329 dp->df_count[idx_new] = dp->df_count[idx_orig];
|
|
|
1330 }
|
|
|
1331
|
|
|
1332 /*
|
|
|
1333 * Clear the list of diffblocks.
|
|
|
1334 */
|
|
|
1335 static void
|
|
|
1336 diff_clear()
|
|
|
1337 {
|
|
|
1338 diff_T *p, *next_p;
|
|
|
1339
|
|
|
1340 for (p = first_diff; p != NULL; p = next_p)
|
|
|
1341 {
|
|
|
1342 next_p = p->df_next;
|
|
|
1343 vim_free(p);
|
|
|
1344 }
|
|
|
1345 first_diff = NULL;
|
|
|
1346 }
|
|
|
1347
|
|
|
1348 /*
|
|
|
1349 * Check diff status for line "lnum" in buffer "buf":
|
|
|
1350 * Returns 0 for nothing special
|
|
|
1351 * Returns -1 for a line that should be highlighted as changed.
|
|
|
1352 * Returns -2 for a line that should be highlighted as added/deleted.
|
|
|
1353 * Returns > 0 for inserting that many filler lines above it (never happens
|
|
|
1354 * when 'diffopt' doesn't contain "filler").
|
|
|
1355 * This should only be used for windows where 'diff' is set.
|
|
|
1356 */
|
|
|
1357 int
|
|
|
1358 diff_check(wp, lnum)
|
|
|
1359 win_T *wp;
|
|
|
1360 linenr_T lnum;
|
|
|
1361 {
|
|
|
1362 int idx; /* index in diffbuf[] for this buffer */
|
|
|
1363 diff_T *dp;
|
|
|
1364 int maxcount;
|
|
|
1365 int i;
|
|
|
1366 buf_T *buf = wp->w_buffer;
|
|
|
1367 int cmp;
|
|
|
1368
|
|
|
1369 if (diff_invalid)
|
|
|
1370 ex_diffupdate(NULL); /* update after a big change */
|
|
|
1371
|
|
|
1372 if (first_diff == NULL || !wp->w_p_diff) /* no diffs at all */
|
|
|
1373 return 0;
|
|
|
1374
|
|
|
1375 /* safety check: "lnum" must be a buffer line */
|
|
|
1376 if (lnum < 1 || lnum > buf->b_ml.ml_line_count + 1)
|
|
|
1377 return 0;
|
|
|
1378
|
|
|
1379 idx = diff_buf_idx(buf);
|
|
|
1380 if (idx == DB_COUNT)
|
|
|
1381 return 0; /* no diffs for buffer "buf" */
|
|
|
1382
|
|
|
1383 #ifdef FEAT_FOLDING
|
|
|
1384 /* A closed fold never has filler lines. */
|
|
|
1385 if (hasFoldingWin(wp, lnum, NULL, NULL, TRUE, NULL))
|
|
|
1386 return 0;
|
|
|
1387 #endif
|
|
|
1388
|
|
|
1389 /* search for a change that includes "lnum" in the list of diffblocks. */
|
|
|
1390 for (dp = first_diff; dp != NULL; dp = dp->df_next)
|
|
|
1391 if (lnum <= dp->df_lnum[idx] + dp->df_count[idx])
|
|
|
1392 break;
|
|
|
1393 if (dp == NULL || lnum < dp->df_lnum[idx])
|
|
|
1394 return 0;
|
|
|
1395
|
|
|
1396 if (lnum < dp->df_lnum[idx] + dp->df_count[idx])
|
|
|
1397 {
|
|
|
1398 int zero = FALSE;
|
|
|
1399
|
|
|
1400 /* Changed or inserted line. If the other buffers have a count of
|
|
|
1401 * zero, the lines were inserted. If the other buffers have the same
|
|
|
1402 * count, check if the lines are identical. */
|
|
|
1403 cmp = FALSE;
|
|
|
1404 for (i = 0; i < DB_COUNT; ++i)
|
|
|
1405 if (i != idx && diffbuf[i] != NULL)
|
|
|
1406 {
|
|
|
1407 if (dp->df_count[i] == 0)
|
|
|
1408 zero = TRUE;
|
|
|
1409 else
|
|
|
1410 {
|
|
|
1411 if (dp->df_count[i] != dp->df_count[idx])
|
|
|
1412 return -1; /* nr of lines changed. */
|
|
|
1413 cmp = TRUE;
|
|
|
1414 }
|
|
|
1415 }
|
|
|
1416 if (cmp)
|
|
|
1417 {
|
|
|
1418 /* Compare all lines. If they are equal the lines were inserted
|
|
|
1419 * in some buffers, deleted in others, but not changed. */
|
|
|
1420 for (i = 0; i < DB_COUNT; ++i)
|
|
|
1421 if (i != idx && diffbuf[i] != NULL && dp->df_count[i] != 0)
|
|
|
1422 if (!diff_equal_entry(dp, idx, i))
|
|
|
1423 return -1;
|
|
|
1424 }
|
|
|
1425 /* If there is no buffer with zero lines then there is no difference
|
|
|
1426 * any longer. Happens when making a change (or undo) that removes
|
|
|
1427 * the difference. Can't remove the entry here, we might be halfway
|
|
|
1428 * updating the window. Just report the text as unchanged. Other
|
|
|
1429 * windows might still show the change though. */
|
|
|
1430 if (zero == FALSE)
|
|
|
1431 return 0;
|
|
|
1432 return -2;
|
|
|
1433 }
|
|
|
1434
|
|
|
1435 /* If 'diffopt' doesn't contain "filler", return 0. */
|
|
|
1436 if (!(diff_flags & DIFF_FILLER))
|
|
|
1437 return 0;
|
|
|
1438
|
|
|
1439 /* Insert filler lines above the line just below the change. Will return
|
|
|
1440 * 0 when this buf had the max count. */
|
|
|
1441 maxcount = 0;
|
|
|
1442 for (i = 0; i < DB_COUNT; ++i)
|
|
|
1443 if (diffbuf[i] != NULL && dp->df_count[i] > maxcount)
|
|
|
1444 maxcount = dp->df_count[i];
|
|
|
1445 return maxcount - dp->df_count[idx];
|
|
|
1446 }
|
|
|
1447
|
|
|
1448 /*
|
|
|
1449 * Compare two entries in diff "*dp" and return TRUE if they are equal.
|
|
|
1450 */
|
|
|
1451 static int
|
|
|
1452 diff_equal_entry(dp, idx1, idx2)
|
|
|
1453 diff_T *dp;
|
|
|
1454 int idx1;
|
|
|
1455 int idx2;
|
|
|
1456 {
|
|
|
1457 int i;
|
|
|
1458 char_u *line;
|
|
|
1459 int cmp;
|
|
|
1460
|
|
|
1461 if (dp->df_count[idx1] != dp->df_count[idx2])
|
|
|
1462 return FALSE;
|
|
|
1463 if (diff_check_sanity(dp) == FAIL)
|
|
|
1464 return FALSE;
|
|
|
1465 for (i = 0; i < dp->df_count[idx1]; ++i)
|
|
|
1466 {
|
|
|
1467 line = vim_strsave(ml_get_buf(diffbuf[idx1],
|
|
|
1468 dp->df_lnum[idx1] + i, FALSE));
|
|
|
1469 if (line == NULL)
|
|
|
1470 return FALSE;
|
|
|
1471 cmp = diff_cmp(line, ml_get_buf(diffbuf[idx2],
|
|
|
1472 dp->df_lnum[idx2] + i, FALSE));
|
|
|
1473 vim_free(line);
|
|
|
1474 if (cmp != 0)
|
|
|
1475 return FALSE;
|
|
|
1476 }
|
|
|
1477 return TRUE;
|
|
|
1478 }
|
|
|
1479
|
|
|
1480 /*
|
|
|
1481 * Compare strings "s1" and "s2" according to 'diffopt'.
|
|
|
1482 * Return non-zero when they are different.
|
|
|
1483 */
|
|
|
1484 static int
|
|
|
1485 diff_cmp(s1, s2)
|
|
|
1486 char_u *s1;
|
|
|
1487 char_u *s2;
|
|
|
1488 {
|
|
|
1489 char_u *p1, *p2;
|
|
|
1490 #ifdef FEAT_MBYTE
|
|
|
1491 int l;
|
|
|
1492 #endif
|
|
|
1493
|
|
|
1494 if ((diff_flags & (DIFF_ICASE | DIFF_IWHITE)) == 0)
|
|
|
1495 return STRCMP(s1, s2);
|
|
|
1496 if ((diff_flags & DIFF_ICASE) && !(diff_flags & DIFF_IWHITE))
|
|
|
1497 return MB_STRICMP(s1, s2);
|
|
|
1498
|
|
|
1499 /* Ignore white space changes and possibly ignore case. */
|
|
|
1500 p1 = s1;
|
|
|
1501 p2 = s2;
|
|
|
1502 while (*p1 != NUL && *p2 != NUL)
|
|
|
1503 {
|
|
|
1504 if (vim_iswhite(*p1) && vim_iswhite(*p2))
|
|
|
1505 {
|
|
|
1506 p1 = skipwhite(p1);
|
|
|
1507 p2 = skipwhite(p2);
|
|
|
1508 }
|
|
|
1509 else
|
|
|
1510 {
|
|
|
1511 #ifdef FEAT_MBYTE
|
|
|
1512 l = (*mb_ptr2len_check)(p1);
|
|
|
1513 if (l != (*mb_ptr2len_check)(p2))
|
|
|
1514 break;
|
|
|
1515 if (l > 1)
|
|
|
1516 {
|
|
|
1517 if (STRNCMP(p1, p2, l) != 0
|
|
|
1518 && (!enc_utf8
|
|
|
1519 || !(diff_flags & DIFF_ICASE)
|
|
|
1520 || utf_fold(utf_ptr2char(p1))
|
|
|
1521 != utf_fold(utf_ptr2char(p2))))
|
|
|
1522 break;
|
|
|
1523 p1 += l;
|
|
|
1524 p2 += l;
|
|
|
1525 }
|
|
|
1526 else
|
|
|
1527 #endif
|
|
|
1528 {
|
|
|
1529 if (*p1 != *p2 && (!(diff_flags & DIFF_ICASE)
|
|
|
1530 || TOLOWER_LOC(*p1) != TOLOWER_LOC(*p2)))
|
|
|
1531 break;
|
|
|
1532 ++p1;
|
|
|
1533 ++p2;
|
|
|
1534 }
|
|
|
1535 }
|
|
|
1536 }
|
|
|
1537
|
|
|
1538 /* Ignore trailing white space. */
|
|
|
1539 p1 = skipwhite(p1);
|
|
|
1540 p2 = skipwhite(p2);
|
|
|
1541 if (*p1 != NUL || *p2 != NUL)
|
|
|
1542 return 1;
|
|
|
1543 return 0;
|
|
|
1544 }
|
|
|
1545
|
|
|
1546 /*
|
|
|
1547 * Return the number of filler lines above "lnum".
|
|
|
1548 */
|
|
|
1549 int
|
|
|
1550 diff_check_fill(wp, lnum)
|
|
|
1551 win_T *wp;
|
|
|
1552 linenr_T lnum;
|
|
|
1553 {
|
|
|
1554 int n;
|
|
|
1555
|
|
|
1556 /* be quick when there are no filler lines */
|
|
|
1557 if (!(diff_flags & DIFF_FILLER))
|
|
|
1558 return 0;
|
|
|
1559 n = diff_check(wp, lnum);
|
|
|
1560 if (n <= 0)
|
|
|
1561 return 0;
|
|
|
1562 return n;
|
|
|
1563 }
|
|
|
1564
|
|
|
1565 /*
|
|
|
1566 * Set the topline of "towin" to match the position in "fromwin", so that they
|
|
|
1567 * show the same diff'ed lines.
|
|
|
1568 */
|
|
|
1569 void
|
|
|
1570 diff_set_topline(fromwin, towin)
|
|
|
1571 win_T *fromwin;
|
|
|
1572 win_T *towin;
|
|
|
1573 {
|
|
|
1574 buf_T *buf = fromwin->w_buffer;
|
|
|
1575 linenr_T lnum = fromwin->w_topline;
|
|
|
1576 int idx;
|
|
|
1577 diff_T *dp;
|
|
|
1578 int i;
|
|
|
1579
|
|
|
1580 idx = diff_buf_idx(buf);
|
|
|
1581 if (idx == DB_COUNT)
|
|
|
1582 return; /* safety check */
|
|
|
1583
|
|
|
1584 if (diff_invalid)
|
|
|
1585 ex_diffupdate(NULL); /* update after a big change */
|
|
|
1586
|
|
|
1587 towin->w_topfill = 0;
|
|
|
1588
|
|
|
1589 /* search for a change that includes "lnum" in the list of diffblocks. */
|
|
|
1590 for (dp = first_diff; dp != NULL; dp = dp->df_next)
|
|
|
1591 if (lnum <= dp->df_lnum[idx] + dp->df_count[idx])
|
|
|
1592 break;
|
|
|
1593 if (dp == NULL)
|
|
|
1594 {
|
|
|
1595 /* After last change, compute topline relative to end of file; no
|
|
|
1596 * filler lines. */
|
|
|
1597 towin->w_topline = towin->w_buffer->b_ml.ml_line_count
|
|
|
1598 - (buf->b_ml.ml_line_count - lnum);
|
|
|
1599 }
|
|
|
1600 else
|
|
|
1601 {
|
|
|
1602 /* Find index for "towin". */
|
|
|
1603 i = diff_buf_idx(towin->w_buffer);
|
|
|
1604 if (i == DB_COUNT)
|
|
|
1605 return; /* safety check */
|
|
|
1606
|
|
|
1607 towin->w_topline = lnum + (dp->df_lnum[i] - dp->df_lnum[idx]);
|
|
|
1608 if (lnum >= dp->df_lnum[idx])
|
|
|
1609 {
|
|
|
1610 /* Inside a change: compute filler lines. */
|
|
|
1611 if (dp->df_count[i] == dp->df_count[idx])
|
|
|
1612 towin->w_topfill = fromwin->w_topfill;
|
|
|
1613 else if (dp->df_count[i] > dp->df_count[idx])
|
|
|
1614 {
|
|
|
1615 if (lnum == dp->df_lnum[idx] + dp->df_count[idx])
|
|
|
1616 towin->w_topline = dp->df_lnum[i] + dp->df_count[i]
|
|
|
1617 - fromwin->w_topfill;
|
|
|
1618 }
|
|
|
1619 else
|
|
|
1620 {
|
|
|
1621 if (towin->w_topline >= dp->df_lnum[i] + dp->df_count[i])
|
|
|
1622 {
|
|
|
1623 if (diff_flags & DIFF_FILLER)
|
|
|
1624 towin->w_topfill = dp->df_lnum[idx]
|
|
|
1625 + dp->df_count[idx] - lnum;
|
|
|
1626 towin->w_topline = dp->df_lnum[i] + dp->df_count[i];
|
|
|
1627 }
|
|
|
1628 }
|
|
|
1629 }
|
|
|
1630 }
|
|
|
1631
|
|
|
1632 /* safety check (if diff info gets outdated strange things may happen) */
|
|
|
1633 towin->w_botfill = FALSE;
|
|
|
1634 if (towin->w_topline > towin->w_buffer->b_ml.ml_line_count)
|
|
|
1635 {
|
|
|
1636 towin->w_topline = towin->w_buffer->b_ml.ml_line_count;
|
|
|
1637 towin->w_botfill = TRUE;
|
|
|
1638 }
|
|
|
1639 if (towin->w_topline < 1)
|
|
|
1640 {
|
|
|
1641 towin->w_topline = 1;
|
|
|
1642 towin->w_topfill = 0;
|
|
|
1643 }
|
|
|
1644
|
|
|
1645 /* When w_topline changes need to recompute w_botline and cursor position */
|
|
|
1646 invalidate_botline_win(towin);
|
|
|
1647 changed_line_abv_curs_win(towin);
|
|
|
1648
|
|
|
1649 check_topfill(towin, FALSE);
|
|
|
1650 #ifdef FEAT_FOLDING
|
|
|
1651 (void)hasFoldingWin(towin, towin->w_topline, &towin->w_topline,
|
|
|
1652 NULL, TRUE, NULL);
|
|
|
1653 #endif
|
|
|
1654 }
|
|
|
1655
|
|
|
1656 /*
|
|
|
1657 * This is called when 'diffopt' is changed.
|
|
|
1658 */
|
|
|
1659 int
|
|
|
1660 diffopt_changed()
|
|
|
1661 {
|
|
|
1662 char_u *p;
|
|
|
1663 int diff_context_new = 6;
|
|
|
1664 int diff_flags_new = 0;
|
|
|
1665
|
|
|
1666 p = p_dip;
|
|
|
1667 while (*p != NUL)
|
|
|
1668 {
|
|
|
1669 if (STRNCMP(p, "filler", 6) == 0)
|
|
|
1670 {
|
|
|
1671 p += 6;
|
|
|
1672 diff_flags_new |= DIFF_FILLER;
|
|
|
1673 }
|
|
|
1674 else if (STRNCMP(p, "context:", 8) == 0 && VIM_ISDIGIT(p[8]))
|
|
|
1675 {
|
|
|
1676 p += 8;
|
|
|
1677 diff_context_new = getdigits(&p);
|
|
|
1678 }
|
|
|
1679 else if (STRNCMP(p, "icase", 5) == 0)
|
|
|
1680 {
|
|
|
1681 p += 5;
|
|
|
1682 diff_flags_new |= DIFF_ICASE;
|
|
|
1683 }
|
|
|
1684 else if (STRNCMP(p, "iwhite", 6) == 0)
|
|
|
1685 {
|
|
|
1686 p += 6;
|
|
|
1687 diff_flags_new |= DIFF_IWHITE;
|
|
|
1688 }
|
|
|
1689 if (*p != ',' && *p != NUL)
|
|
|
1690 return FAIL;
|
|
|
1691 if (*p == ',')
|
|
|
1692 ++p;
|
|
|
1693 }
|
|
|
1694
|
|
|
1695 /* If "icase" or "iwhite" was added or removed, need to update the diff. */
|
|
|
1696 if (diff_flags != diff_flags_new)
|
|
|
1697 diff_invalid = TRUE;
|
|
|
1698
|
|
|
1699 diff_flags = diff_flags_new;
|
|
|
1700 diff_context = diff_context_new;
|
|
|
1701
|
|
|
1702 diff_redraw(TRUE);
|
|
|
1703
|
|
|
1704 /* recompute the scroll binding with the new option value, may
|
|
|
1705 * remove or add filler lines */
|
|
|
1706 check_scrollbind((linenr_T)0, 0L);
|
|
|
1707
|
|
|
1708 return OK;
|
|
|
1709 }
|
|
|
1710
|
|
|
1711 /*
|
|
|
1712 * Find the difference within a changed line.
|
|
|
1713 * Returns TRUE if the line was added, no other buffer has it.
|
|
|
1714 */
|
|
|
1715 int
|
|
|
1716 diff_find_change(wp, lnum, startp, endp)
|
|
|
1717 win_T *wp;
|
|
|
1718 linenr_T lnum;
|
|
|
1719 int *startp; /* first char of the change */
|
|
|
1720 int *endp; /* last char of the change */
|
|
|
1721 {
|
|
|
1722 char_u *line_org;
|
|
|
1723 char_u *line_new;
|
|
|
1724 int i;
|
|
|
1725 int si, ei_org, ei_new;
|
|
|
1726 diff_T *dp;
|
|
|
1727 int idx;
|
|
|
1728 int off;
|
|
|
1729 int added = TRUE;
|
|
|
1730
|
|
|
1731 /* Make a copy of the line, the next ml_get() will invalidate it. */
|
|
|
1732 line_org = vim_strsave(ml_get_buf(wp->w_buffer, lnum, FALSE));
|
|
|
1733 if (line_org == NULL)
|
|
|
1734 return FALSE;
|
|
|
1735
|
|
|
1736 idx = diff_buf_idx(wp->w_buffer);
|
|
|
1737 if (idx == DB_COUNT) /* cannot happen */
|
|
|
1738 return FALSE;
|
|
|
1739
|
|
|
1740 /* search for a change that includes "lnum" in the list of diffblocks. */
|
|
|
1741 for (dp = first_diff; dp != NULL; dp = dp->df_next)
|
|
|
1742 if (lnum <= dp->df_lnum[idx] + dp->df_count[idx])
|
|
|
1743 break;
|
|
|
1744 if (dp == NULL || diff_check_sanity(dp) == FAIL)
|
|
|
1745 return FALSE;
|
|
|
1746
|
|
|
1747 off = lnum - dp->df_lnum[idx];
|
|
|
1748
|
|
|
1749 for (i = 0; i < DB_COUNT; ++i)
|
|
|
1750 if (diffbuf[i] != NULL && i != idx)
|
|
|
1751 {
|
|
|
1752 /* Skip lines that are not in the other change (filler lines). */
|
|
|
1753 if (off >= dp->df_count[i])
|
|
|
1754 continue;
|
|
|
1755 added = FALSE;
|
|
|
1756 line_new = ml_get_buf(diffbuf[i], dp->df_lnum[i] + off, FALSE);
|
|
|
1757
|
|
|
1758 /* Search for start of difference */
|
|
|
1759 for (si = 0; line_org[si] != NUL && line_org[si] == line_new[si]; )
|
|
|
1760 ++si;
|
|
|
1761 #ifdef FEAT_MBYTE
|
|
|
1762 if (has_mbyte)
|
|
|
1763 {
|
|
|
1764 /* Move back to first byte of character in both lines (may
|
|
|
1765 * have "nn^" in line_org and "n^ in line_new). */
|
|
|
1766 si -= (*mb_head_off)(line_org, line_org + si);
|
|
|
1767 si -= (*mb_head_off)(line_new, line_new + si);
|
|
|
1768 }
|
|
|
1769 #endif
|
|
|
1770 if (*startp > si)
|
|
|
1771 *startp = si;
|
|
|
1772
|
|
|
1773 /* Search for end of difference, if any. */
|
|
|
1774 if (line_org[si] != NUL || line_new[si] != NUL)
|
|
|
1775 {
|
|
|
1776 ei_org = (int)STRLEN(line_org);
|
|
|
1777 ei_new = (int)STRLEN(line_new);
|
|
|
1778 while (ei_org >= *startp && ei_new >= *startp
|
|
|
1779 && ei_org >= 0 && ei_new >= 0
|
|
|
1780 && line_org[ei_org] == line_new[ei_new])
|
|
|
1781 {
|
|
|
1782 --ei_org;
|
|
|
1783 --ei_new;
|
|
|
1784 }
|
|
|
1785 if (*endp < ei_org)
|
|
|
1786 *endp = ei_org;
|
|
|
1787 }
|
|
|
1788 }
|
|
|
1789
|
|
|
1790 vim_free(line_org);
|
|
|
1791 return added;
|
|
|
1792 }
|
|
|
1793
|
|
|
1794 #if defined(FEAT_FOLDING) || defined(PROTO)
|
|
|
1795 /*
|
|
|
1796 * Return TRUE if line "lnum" is not close to a diff block, this line should
|
|
|
1797 * be in a fold.
|
|
|
1798 * Return FALSE if there are no diff blocks at all in this window.
|
|
|
1799 */
|
|
|
1800 int
|
|
|
1801 diff_infold(wp, lnum)
|
|
|
1802 win_T *wp;
|
|
|
1803 linenr_T lnum;
|
|
|
1804 {
|
|
|
1805 int i;
|
|
|
1806 int idx = -1;
|
|
|
1807 int other = FALSE;
|
|
|
1808 diff_T *dp;
|
|
|
1809
|
|
|
1810 /* Return if 'diff' isn't set. */
|
|
|
1811 if (!wp->w_p_diff)
|
|
|
1812 return FALSE;
|
|
|
1813
|
|
|
1814 for (i = 0; i < DB_COUNT; ++i)
|
|
|
1815 {
|
|
|
1816 if (diffbuf[i] == wp->w_buffer)
|
|
|
1817 idx = i;
|
|
|
1818 else if (diffbuf[i] != NULL)
|
|
|
1819 other = TRUE;
|
|
|
1820 }
|
|
|
1821
|
|
|
1822 /* return here if there are no diffs in the window */
|
|
|
1823 if (idx == -1 || !other)
|
|
|
1824 return FALSE;
|
|
|
1825
|
|
|
1826 if (diff_invalid)
|
|
|
1827 ex_diffupdate(NULL); /* update after a big change */
|
|
|
1828
|
|
|
1829 /* Return if there are no diff blocks. All lines will be folded. */
|
|
|
1830 if (first_diff == NULL)
|
|
|
1831 return TRUE;
|
|
|
1832
|
|
|
1833 for (dp = first_diff; dp != NULL; dp = dp->df_next)
|
|
|
1834 {
|
|
|
1835 /* If this change is below the line there can't be any further match. */
|
|
|
1836 if (dp->df_lnum[idx] - diff_context > lnum)
|
|
|
1837 break;
|
|
|
1838 /* If this change ends before the line we have a match. */
|
|
|
1839 if (dp->df_lnum[idx] + dp->df_count[idx] + diff_context > lnum)
|
|
|
1840 return FALSE;
|
|
|
1841 }
|
|
|
1842 return TRUE;
|
|
|
1843 }
|
|
|
1844 #endif
|
|
|
1845
|
|
|
1846 /*
|
|
|
1847 * "dp" and "do" commands.
|
|
|
1848 */
|
|
|
1849 void
|
|
|
1850 nv_diffgetput(put)
|
|
|
1851 int put;
|
|
|
1852 {
|
|
|
1853 exarg_T ea;
|
|
|
1854
|
|
|
1855 ea.arg = (char_u *)"";
|
|
|
1856 if (put)
|
|
|
1857 ea.cmdidx = CMD_diffput;
|
|
|
1858 else
|
|
|
1859 ea.cmdidx = CMD_diffget;
|
|
|
1860 ea.addr_count = 0;
|
|
|
1861 ea.line1 = curwin->w_cursor.lnum;
|
|
|
1862 ea.line2 = curwin->w_cursor.lnum;
|
|
|
1863 ex_diffgetput(&ea);
|
|
|
1864 }
|
|
|
1865
|
|
|
1866 /*
|
|
|
1867 * ":diffget"
|
|
|
1868 * ":diffput"
|
|
|
1869 */
|
|
|
1870 void
|
|
|
1871 ex_diffgetput(eap)
|
|
|
1872 exarg_T *eap;
|
|
|
1873 {
|
|
|
1874 linenr_T lnum;
|
|
|
1875 int count;
|
|
|
1876 linenr_T off = 0;
|
|
|
1877 diff_T *dp;
|
|
|
1878 diff_T *dprev;
|
|
|
1879 diff_T *dfree;
|
|
|
1880 int idx_cur;
|
|
|
1881 int idx_other;
|
|
|
1882 int idx_from;
|
|
|
1883 int idx_to;
|
|
|
1884 int i;
|
|
|
1885 int added;
|
|
|
1886 char_u *p;
|
|
|
1887 aco_save_T aco;
|
|
|
1888 buf_T *buf;
|
|
|
1889 int start_skip, end_skip;
|
|
|
1890 int new_count;
|
|
|
1891
|
|
|
1892 /* Find the current buffer in the list of diff buffers. */
|
|
|
1893 idx_cur = diff_buf_idx(curbuf);
|
|
|
1894 if (idx_cur == DB_COUNT)
|
|
|
1895 {
|
|
|
1896 EMSG(_("E99: Current buffer is not in diff mode"));
|
|
|
1897 return;
|
|
|
1898 }
|
|
|
1899
|
|
|
1900 if (*eap->arg == NUL)
|
|
|
1901 {
|
|
|
1902 /* No argument: Find the other buffer in the list of diff buffers. */
|
|
|
1903 for (idx_other = 0; idx_other < DB_COUNT; ++idx_other)
|
|
|
1904 if (diffbuf[idx_other] != curbuf && diffbuf[idx_other] != NULL)
|
|
|
1905 break;
|
|
|
1906 if (idx_other == DB_COUNT)
|
|
|
1907 {
|
|
|
1908 EMSG(_("E100: No other buffer in diff mode"));
|
|
|
1909 return;
|
|
|
1910 }
|
|
|
1911
|
|
|
1912 /* Check that there isn't a third buffer in the list */
|
|
|
1913 for (i = idx_other + 1; i < DB_COUNT; ++i)
|
|
|
1914 if (diffbuf[i] != curbuf && diffbuf[i] != NULL)
|
|
|
1915 {
|
|
|
1916 EMSG(_("E101: More than two buffers in diff mode, don't know which one to use"));
|
|
|
1917 return;
|
|
|
1918 }
|
|
|
1919 }
|
|
|
1920 else
|
|
|
1921 {
|
|
|
1922 /* Buffer number or pattern given. Ignore trailing white space. */
|
|
|
1923 p = eap->arg + STRLEN(eap->arg);
|
|
|
1924 while (p > eap->arg && vim_iswhite(p[-1]))
|
|
|
1925 --p;
|
|
|
1926 for (i = 0; vim_isdigit(eap->arg[i]) && eap->arg + i < p; ++i)
|
|
|
1927 ;
|
|
|
1928 if (eap->arg + i == p) /* digits only */
|
|
|
1929 i = atol((char *)eap->arg);
|
|
|
1930 else
|
|
|
1931 {
|
|
|
1932 i = buflist_findpat(eap->arg, p, FALSE, TRUE);
|
|
|
1933 if (i < 0)
|
|
|
1934 return; /* error message already given */
|
|
|
1935 }
|
|
|
1936 buf = buflist_findnr(i);
|
|
|
1937 if (buf == NULL)
|
|
|
1938 {
|
|
|
1939 EMSG2(_("E102: Can't find buffer \"%s\""), eap->arg);
|
|
|
1940 return;
|
|
|
1941 }
|
|
|
1942 idx_other = diff_buf_idx(buf);
|
|
|
1943 if (idx_other == DB_COUNT)
|
|
|
1944 {
|
|
|
1945 EMSG2(_("E103: Buffer \"%s\" is not in diff mode"), eap->arg);
|
|
|
1946 return;
|
|
|
1947 }
|
|
|
1948 }
|
|
|
1949
|
|
|
1950 diff_busy = TRUE;
|
|
|
1951
|
|
|
1952 /* When no range given include the line above or below the cursor. */
|
|
|
1953 if (eap->addr_count == 0)
|
|
|
1954 {
|
|
|
1955 /* Make it possible that ":diffget" on the last line gets line below
|
|
|
1956 * the cursor line when there is no difference above the cursor. */
|
|
|
1957 if (eap->cmdidx == CMD_diffget
|
|
|
1958 && eap->line1 == curbuf->b_ml.ml_line_count
|
|
|
1959 && diff_check(curwin, eap->line1) == 0
|
|
|
1960 && (eap->line1 == 1 || diff_check(curwin, eap->line1 - 1) == 0))
|
|
|
1961 ++eap->line2;
|
|
|
1962 else if (eap->line1 > 0)
|
|
|
1963 --eap->line1;
|
|
|
1964 }
|
|
|
1965
|
|
|
1966 if (eap->cmdidx == CMD_diffget)
|
|
|
1967 {
|
|
|
1968 idx_from = idx_other;
|
|
|
1969 idx_to = idx_cur;
|
|
|
1970 }
|
|
|
1971 else
|
|
|
1972 {
|
|
|
1973 idx_from = idx_cur;
|
|
|
1974 idx_to = idx_other;
|
|
|
1975 /* Need to make the other buffer the current buffer to be able to make
|
|
|
1976 * changes in it. */
|
|
|
1977 /* set curwin/curbuf to buf and save a few things */
|
|
|
1978 aucmd_prepbuf(&aco, diffbuf[idx_other]);
|
|
|
1979 }
|
|
|
1980
|
|
|
1981 dprev = NULL;
|
|
|
1982 for (dp = first_diff; dp != NULL; )
|
|
|
1983 {
|
|
|
1984 if (dp->df_lnum[idx_cur] > eap->line2 + off)
|
|
|
1985 break; /* past the range that was specified */
|
|
|
1986
|
|
|
1987 dfree = NULL;
|
|
|
1988 lnum = dp->df_lnum[idx_to];
|
|
|
1989 count = dp->df_count[idx_to];
|
|
|
1990 if (dp->df_lnum[idx_cur] + dp->df_count[idx_cur] > eap->line1 + off
|
|
|
1991 && u_save(lnum - 1, lnum + count) != FAIL)
|
|
|
1992 {
|
|
|
1993 /* Inside the specified range and saving for undo worked. */
|
|
|
1994 start_skip = 0;
|
|
|
1995 end_skip = 0;
|
|
|
1996 if (eap->addr_count > 0)
|
|
|
1997 {
|
|
|
1998 /* A range was specified: check if lines need to be skipped. */
|
|
|
1999 start_skip = eap->line1 + off - dp->df_lnum[idx_cur];
|
|
|
2000 if (start_skip > 0)
|
|
|
2001 {
|
|
|
2002 /* range starts below start of current diff block */
|
|
|
2003 if (start_skip > count)
|
|
|
2004 {
|
|
|
2005 lnum += count;
|
|
|
2006 count = 0;
|
|
|
2007 }
|
|
|
2008 else
|
|
|
2009 {
|
|
|
2010 count -= start_skip;
|
|
|
2011 lnum += start_skip;
|
|
|
2012 }
|
|
|
2013 }
|
|
|
2014 else
|
|
|
2015 start_skip = 0;
|
|
|
2016
|
|
|
2017 end_skip = dp->df_lnum[idx_cur] + dp->df_count[idx_cur] - 1
|
|
|
2018 - (eap->line2 + off);
|
|
|
2019 if (end_skip > 0)
|
|
|
2020 {
|
|
|
2021 /* range ends above end of current/from diff block */
|
|
|
2022 if (idx_cur == idx_from) /* :diffput */
|
|
|
2023 {
|
|
|
2024 i = dp->df_count[idx_cur] - start_skip - end_skip;
|
|
|
2025 if (count > i)
|
|
|
2026 count = i;
|
|
|
2027 }
|
|
|
2028 else /* :diffget */
|
|
|
2029 {
|
|
|
2030 count -= end_skip;
|
|
|
2031 end_skip = dp->df_count[idx_from] - start_skip - count;
|
|
|
2032 if (end_skip < 0)
|
|
|
2033 end_skip = 0;
|
|
|
2034 }
|
|
|
2035 }
|
|
|
2036 else
|
|
|
2037 end_skip = 0;
|
|
|
2038 }
|
|
|
2039
|
|
|
2040 added = 0;
|
|
|
2041 for (i = 0; i < count; ++i)
|
|
|
2042 {
|
|
|
2043 ml_delete(lnum, FALSE);
|
|
|
2044 --added;
|
|
|
2045 }
|
|
|
2046 for (i = 0; i < dp->df_count[idx_from] - start_skip - end_skip; ++i)
|
|
|
2047 {
|
|
|
2048 linenr_T nr;
|
|
|
2049
|
|
|
2050 nr = dp->df_lnum[idx_from] + start_skip + i;
|
|
|
2051 if (nr > diffbuf[idx_from]->b_ml.ml_line_count)
|
|
|
2052 break;
|
|
|
2053 p = vim_strsave(ml_get_buf(diffbuf[idx_from], nr, FALSE));
|
|
|
2054 if (p != NULL)
|
|
|
2055 {
|
|
|
2056 ml_append(lnum + i - 1, p, 0, FALSE);
|
|
|
2057 vim_free(p);
|
|
|
2058 ++added;
|
|
|
2059 }
|
|
|
2060 }
|
|
|
2061 new_count = dp->df_count[idx_to] + added;
|
|
|
2062 dp->df_count[idx_to] = new_count;
|
|
|
2063
|
|
|
2064 if (start_skip == 0 && end_skip == 0)
|
|
|
2065 {
|
|
|
2066 /* Check if there are any other buffers and if the diff is
|
|
|
2067 * equal in them. */
|
|
|
2068 for (i = 0; i < DB_COUNT; ++i)
|
|
|
2069 if (diffbuf[i] != NULL && i != idx_from && i != idx_to
|
|
|
2070 && !diff_equal_entry(dp, idx_from, i))
|
|
|
2071 break;
|
|
|
2072 if (i == DB_COUNT)
|
|
|
2073 {
|
|
|
2074 /* delete the diff entry, the buffers are now equal here */
|
|
|
2075 dfree = dp;
|
|
|
2076 dp = dp->df_next;
|
|
|
2077 if (dprev == NULL)
|
|
|
2078 first_diff = dp;
|
|
|
2079 else
|
|
|
2080 dprev->df_next = dp;
|
|
|
2081 }
|
|
|
2082 }
|
|
|
2083
|
|
|
2084 /* Adjust marks. This will change the following entries! */
|
|
|
2085 if (added != 0)
|
|
|
2086 {
|
|
|
2087 mark_adjust(lnum, lnum + count - 1, (long)MAXLNUM, (long)added);
|
|
|
2088 if (curwin->w_cursor.lnum >= lnum)
|
|
|
2089 {
|
|
|
2090 /* Adjust the cursor position if it's in/after the changed
|
|
|
2091 * lines. */
|
|
|
2092 if (curwin->w_cursor.lnum >= lnum + count)
|
|
|
2093 curwin->w_cursor.lnum += added;
|
|
|
2094 else if (added < 0)
|
|
|
2095 curwin->w_cursor.lnum = lnum;
|
|
|
2096 }
|
|
|
2097 }
|
|
|
2098 changed_lines(lnum, 0, lnum + count, (long)added);
|
|
|
2099
|
|
|
2100 if (dfree != NULL)
|
|
|
2101 {
|
|
|
2102 /* Diff is deleted, update folds in other windows. */
|
|
|
2103 #ifdef FEAT_FOLDING
|
|
|
2104 diff_fold_update(dfree, idx_to);
|
|
|
2105 #endif
|
|
|
2106 vim_free(dfree);
|
|
|
2107 }
|
|
|
2108 else
|
|
|
2109 /* mark_adjust() may have changed the count in a wrong way */
|
|
|
2110 dp->df_count[idx_to] = new_count;
|
|
|
2111
|
|
|
2112 /* When changing the current buffer, keep track of line numbers */
|
|
|
2113 if (idx_cur == idx_to)
|
|
|
2114 off += added;
|
|
|
2115 }
|
|
|
2116
|
|
|
2117 /* If before the range or not deleted, go to next diff. */
|
|
|
2118 if (dfree == NULL)
|
|
|
2119 {
|
|
|
2120 dprev = dp;
|
|
|
2121 dp = dp->df_next;
|
|
|
2122 }
|
|
|
2123 }
|
|
|
2124
|
|
|
2125 /* restore curwin/curbuf and a few other things */
|
|
|
2126 if (idx_other == idx_to)
|
|
|
2127 {
|
|
|
2128 /* Syncing undo only works for the current buffer, but we change
|
|
|
2129 * another buffer. Sync undo if the command was typed. This isn't
|
|
|
2130 * 100% right when ":diffput" is used in a function or mapping. */
|
|
|
2131 if (KeyTyped)
|
|
|
2132 u_sync();
|
|
|
2133 aucmd_restbuf(&aco);
|
|
|
2134 }
|
|
|
2135
|
|
|
2136 diff_busy = FALSE;
|
|
|
2137
|
|
|
2138 /* Check that the cursor is on a valid character and update it's position.
|
|
|
2139 * When there were filler lines the topline has become invalid. */
|
|
|
2140 check_cursor();
|
|
|
2141 changed_line_abv_curs();
|
|
|
2142
|
|
|
2143 /* Also need to redraw the other buffers. */
|
|
|
2144 diff_redraw(FALSE);
|
|
|
2145 }
|
|
|
2146
|
|
|
2147 #ifdef FEAT_FOLDING
|
|
|
2148 /*
|
|
|
2149 * Update folds for all diff buffers for entry "dp".
|
|
|
2150 * Skip buffer with index "skip_idx".
|
|
|
2151 * When there are no diffs, all folds are removed.
|
|
|
2152 */
|
|
|
2153 static void
|
|
|
2154 diff_fold_update(dp, skip_idx)
|
|
|
2155 diff_T *dp;
|
|
|
2156 int skip_idx;
|
|
|
2157 {
|
|
|
2158 int i;
|
|
|
2159 win_T *wp;
|
|
|
2160
|
|
|
2161 for (wp = firstwin; wp != NULL; wp = wp->w_next)
|
|
|
2162 for (i = 0; i < DB_COUNT; ++i)
|
|
|
2163 if (diffbuf[i] == wp->w_buffer && i != skip_idx)
|
|
|
2164 foldUpdate(wp, dp->df_lnum[i],
|
|
|
2165 dp->df_lnum[i] + dp->df_count[i]);
|
|
|
2166 }
|
|
|
2167 #endif
|
|
|
2168
|
|
|
2169 /*
|
|
|
2170 * Return TRUE if buffer "buf" is in diff-mode.
|
|
|
2171 */
|
|
|
2172 int
|
|
|
2173 diff_mode_buf(buf)
|
|
|
2174 buf_T *buf;
|
|
|
2175 {
|
|
|
2176 return diff_buf_idx(buf) != DB_COUNT;
|
|
|
2177 }
|
|
|
2178
|
|
|
2179 /*
|
|
|
2180 * Move "count" times in direction "dir" to the next diff block.
|
|
|
2181 * Return FAIL if there isn't such a diff block.
|
|
|
2182 */
|
|
|
2183 int
|
|
|
2184 diff_move_to(dir, count)
|
|
|
2185 int dir;
|
|
|
2186 long count;
|
|
|
2187 {
|
|
|
2188 int idx;
|
|
|
2189 linenr_T lnum = curwin->w_cursor.lnum;
|
|
|
2190 diff_T *dp;
|
|
|
2191
|
|
|
2192 idx = diff_buf_idx(curbuf);
|
|
|
2193 if (idx == DB_COUNT || first_diff == NULL)
|
|
|
2194 return FAIL;
|
|
|
2195
|
|
|
2196 if (diff_invalid)
|
|
|
2197 ex_diffupdate(NULL); /* update after a big change */
|
|
|
2198
|
|
|
2199 if (first_diff == NULL) /* no diffs today */
|
|
|
2200 return FAIL;
|
|
|
2201
|
|
|
2202 while (--count >= 0)
|
|
|
2203 {
|
|
|
2204 /* Check if already before first diff. */
|
|
|
2205 if (dir == BACKWARD && lnum <= first_diff->df_lnum[idx])
|
|
|
2206 break;
|
|
|
2207
|
|
|
2208 for (dp = first_diff; ; dp = dp->df_next)
|
|
|
2209 {
|
|
|
2210 if (dp == NULL)
|
|
|
2211 break;
|
|
|
2212 if ((dir == FORWARD && lnum < dp->df_lnum[idx])
|
|
|
2213 || (dir == BACKWARD
|
|
|
2214 && (dp->df_next == NULL
|
|
|
2215 || lnum <= dp->df_next->df_lnum[idx])))
|
|
|
2216 {
|
|
|
2217 lnum = dp->df_lnum[idx];
|
|
|
2218 break;
|
|
|
2219 }
|
|
|
2220 }
|
|
|
2221 }
|
|
|
2222
|
|
|
2223 /* don't end up past the end of the file */
|
|
|
2224 if (lnum > curbuf->b_ml.ml_line_count)
|
|
|
2225 lnum = curbuf->b_ml.ml_line_count;
|
|
|
2226
|
|
|
2227 /* When the cursor didn't move at all we fail. */
|
|
|
2228 if (lnum == curwin->w_cursor.lnum)
|
|
|
2229 return FAIL;
|
|
|
2230
|
|
|
2231 setpcmark();
|
|
|
2232 curwin->w_cursor.lnum = lnum;
|
|
|
2233 curwin->w_cursor.col = 0;
|
|
|
2234
|
|
|
2235 return OK;
|
|
|
2236 }
|
|
|
2237
|
|
|
2238 #if defined(FEAT_FOLDING) || defined(PROTO)
|
|
|
2239 /*
|
|
|
2240 * For line "lnum" in the current window find the equivalent lnum in window
|
|
|
2241 * "wp", compensating for inserted/deleted lines.
|
|
|
2242 */
|
|
|
2243 linenr_T
|
|
|
2244 diff_lnum_win(lnum, wp)
|
|
|
2245 linenr_T lnum;
|
|
|
2246 win_T *wp;
|
|
|
2247 {
|
|
|
2248 diff_T *dp;
|
|
|
2249 int idx;
|
|
|
2250 int i;
|
|
|
2251 linenr_T n;
|
|
|
2252
|
|
|
2253 idx = diff_buf_idx(curbuf);
|
|
|
2254 if (idx == DB_COUNT) /* safety check */
|
|
|
2255 return (linenr_T)0;
|
|
|
2256
|
|
|
2257 if (diff_invalid)
|
|
|
2258 ex_diffupdate(NULL); /* update after a big change */
|
|
|
2259
|
|
|
2260 /* search for a change that includes "lnum" in the list of diffblocks. */
|
|
|
2261 for (dp = first_diff; dp != NULL; dp = dp->df_next)
|
|
|
2262 if (lnum <= dp->df_lnum[idx] + dp->df_count[idx])
|
|
|
2263 break;
|
|
|
2264
|
|
|
2265 /* When after the last change, compute relative to the last line number. */
|
|
|
2266 if (dp == NULL)
|
|
|
2267 return wp->w_buffer->b_ml.ml_line_count
|
|
|
2268 - (curbuf->b_ml.ml_line_count - lnum);
|
|
|
2269
|
|
|
2270 /* Find index for "wp". */
|
|
|
2271 i = diff_buf_idx(wp->w_buffer);
|
|
|
2272 if (i == DB_COUNT) /* safety check */
|
|
|
2273 return (linenr_T)0;
|
|
|
2274
|
|
|
2275 n = lnum + (dp->df_lnum[i] - dp->df_lnum[idx]);
|
|
|
2276 if (n > dp->df_lnum[i] + dp->df_count[i])
|
|
|
2277 n = dp->df_lnum[i] + dp->df_count[i];
|
|
|
2278 return n;
|
|
|
2279 }
|
|
|
2280 #endif
|
|
|
2281
|
|
|
2282 #endif /* FEAT_DIFF */
|
