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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 {
|
|
193
|
797 /* We don't want $DIFF_OPTIONS to get in the way. */
|
|
|
798 if (getenv("DIFF_OPTIONS"))
|
|
|
799 vim_setenv((char_u *)"DIFF_OPTIONS", (char_u *)"");
|
|
|
800
|
|
7
|
801 /* Build the diff command and execute it. Always use -a, binary
|
|
|
802 * differences are of no use. Ignore errors, diff returns
|
|
|
803 * non-zero when differences have been found. */
|
|
|
804 sprintf((char *)cmd, "diff %s%s%s%s%s %s",
|
|
|
805 diff_a_works == FALSE ? "" : "-a ",
|
|
|
806 #if defined(MSWIN) || defined(MSDOS)
|
|
|
807 diff_bin_works == TRUE ? "--binary " : "",
|
|
|
808 #else
|
|
|
809 "",
|
|
|
810 #endif
|
|
|
811 (diff_flags & DIFF_IWHITE) ? "-b " : "",
|
|
|
812 (diff_flags & DIFF_ICASE) ? "-i " : "",
|
|
|
813 tmp_orig, tmp_new);
|
|
|
814 append_redir(cmd, p_srr, tmp_diff);
|
|
|
815 (void)call_shell(cmd, SHELL_FILTER|SHELL_SILENT|SHELL_DOOUT);
|
|
|
816 vim_free(cmd);
|
|
|
817 }
|
|
|
818 }
|
|
|
819 }
|
|
|
820
|
|
|
821 /*
|
|
|
822 * Create a new version of a file from the current buffer and a diff file.
|
|
|
823 * The buffer is written to a file, also for unmodified buffers (the file
|
|
|
824 * could have been produced by autocommands, e.g. the netrw plugin).
|
|
|
825 */
|
|
|
826 void
|
|
|
827 ex_diffpatch(eap)
|
|
|
828 exarg_T *eap;
|
|
|
829 {
|
|
|
830 char_u *tmp_orig; /* name of original temp file */
|
|
|
831 char_u *tmp_new; /* name of patched temp file */
|
|
|
832 char_u *buf = NULL;
|
|
|
833 win_T *old_curwin = curwin;
|
|
|
834 char_u *newname = NULL; /* name of patched file buffer */
|
|
|
835 #ifdef UNIX
|
|
|
836 char_u dirbuf[MAXPATHL];
|
|
|
837 char_u *fullname = NULL;
|
|
|
838 #endif
|
|
|
839 #ifdef FEAT_BROWSE
|
|
|
840 char_u *browseFile = NULL;
|
|
|
841 int browse_flag = cmdmod.browse;
|
|
|
842 #endif
|
|
|
843
|
|
|
844 #ifdef FEAT_BROWSE
|
|
|
845 if (cmdmod.browse)
|
|
|
846 {
|
|
28
|
847 browseFile = do_browse(0, (char_u *)_("Patch file"),
|
|
7
|
848 eap->arg, NULL, NULL, BROWSE_FILTER_ALL_FILES, NULL);
|
|
|
849 if (browseFile == NULL)
|
|
|
850 return; /* operation cancelled */
|
|
|
851 eap->arg = browseFile;
|
|
|
852 cmdmod.browse = FALSE; /* don't let do_ecmd() browse again */
|
|
|
853 }
|
|
|
854 #endif
|
|
|
855
|
|
|
856 /* We need two temp file names. */
|
|
|
857 tmp_orig = vim_tempname('o');
|
|
|
858 tmp_new = vim_tempname('n');
|
|
|
859 if (tmp_orig == NULL || tmp_new == NULL)
|
|
|
860 goto theend;
|
|
|
861
|
|
|
862 /* Write the current buffer to "tmp_orig". */
|
|
|
863 if (buf_write(curbuf, tmp_orig, NULL,
|
|
|
864 (linenr_T)1, curbuf->b_ml.ml_line_count,
|
|
|
865 NULL, FALSE, FALSE, FALSE, TRUE) == FAIL)
|
|
|
866 goto theend;
|
|
|
867
|
|
|
868 #ifdef UNIX
|
|
|
869 /* Get the absolute path of the patchfile, changing directory below. */
|
|
|
870 fullname = FullName_save(eap->arg, FALSE);
|
|
|
871 #endif
|
|
|
872 buf = alloc((unsigned)(STRLEN(tmp_orig) + (
|
|
|
873 # ifdef UNIX
|
|
|
874 fullname != NULL ? STRLEN(fullname) :
|
|
|
875 # endif
|
|
|
876 STRLEN(eap->arg)) + STRLEN(tmp_new) + 16));
|
|
|
877 if (buf == NULL)
|
|
|
878 goto theend;
|
|
|
879
|
|
|
880 #ifdef UNIX
|
|
|
881 /* Temporaraly chdir to /tmp, to avoid patching files in the current
|
|
|
882 * directory when the patch file contains more than one patch. When we
|
|
|
883 * have our own temp dir use that instead, it will be cleaned up when we
|
|
|
884 * exit (any .rej files created). Don't change directory if we can't
|
|
|
885 * return to the current. */
|
|
|
886 if (mch_dirname(dirbuf, MAXPATHL) != OK || mch_chdir((char *)dirbuf) != 0)
|
|
|
887 dirbuf[0] = NUL;
|
|
|
888 else
|
|
|
889 {
|
|
|
890 # ifdef TEMPDIRNAMES
|
|
|
891 if (vim_tempdir != NULL)
|
|
|
892 mch_chdir((char *)vim_tempdir);
|
|
|
893 else
|
|
|
894 # endif
|
|
|
895 mch_chdir("/tmp");
|
|
|
896 shorten_fnames(TRUE);
|
|
|
897 }
|
|
|
898 #endif
|
|
|
899
|
|
|
900 #ifdef FEAT_EVAL
|
|
|
901 if (*p_pex != NUL)
|
|
|
902 /* Use 'patchexpr' to generate the new file. */
|
|
|
903 eval_patch(tmp_orig,
|
|
|
904 # ifdef UNIX
|
|
|
905 fullname != NULL ? fullname :
|
|
|
906 # endif
|
|
|
907 eap->arg, tmp_new);
|
|
|
908 else
|
|
|
909 #endif
|
|
|
910 {
|
|
|
911 /* Build the patch command and execute it. Ignore errors. Switch to
|
|
|
912 * cooked mode to allow the user to respond to prompts. */
|
|
|
913 sprintf((char *)buf, "patch -o %s %s < \"%s\"", tmp_new, tmp_orig,
|
|
|
914 # ifdef UNIX
|
|
|
915 fullname != NULL ? fullname :
|
|
|
916 # endif
|
|
|
917 eap->arg);
|
|
|
918 (void)call_shell(buf, SHELL_FILTER | SHELL_COOKED);
|
|
|
919 }
|
|
|
920
|
|
|
921 #ifdef UNIX
|
|
|
922 if (dirbuf[0] != NUL)
|
|
|
923 {
|
|
|
924 if (mch_chdir((char *)dirbuf) != 0)
|
|
|
925 EMSG(_(e_prev_dir));
|
|
|
926 shorten_fnames(TRUE);
|
|
|
927 }
|
|
|
928 #endif
|
|
|
929
|
|
|
930 /* patch probably has written over the screen */
|
|
|
931 redraw_later(CLEAR);
|
|
|
932
|
|
|
933 /* Delete any .orig or .rej file created. */
|
|
|
934 STRCPY(buf, tmp_new);
|
|
|
935 STRCAT(buf, ".orig");
|
|
|
936 mch_remove(buf);
|
|
|
937 STRCPY(buf, tmp_new);
|
|
|
938 STRCAT(buf, ".rej");
|
|
|
939 mch_remove(buf);
|
|
|
940
|
|
|
941 if (curbuf->b_fname != NULL)
|
|
|
942 {
|
|
|
943 newname = vim_strnsave(curbuf->b_fname,
|
|
|
944 (int)(STRLEN(curbuf->b_fname) + 4));
|
|
|
945 if (newname != NULL)
|
|
|
946 STRCAT(newname, ".new");
|
|
|
947 }
|
|
|
948
|
|
|
949 #ifdef FEAT_GUI
|
|
|
950 need_mouse_correct = TRUE;
|
|
|
951 #endif
|
|
|
952 if (win_split(0, 0) != FAIL)
|
|
|
953 {
|
|
|
954 /* Pretend it was a ":split fname" command */
|
|
|
955 eap->cmdidx = CMD_split;
|
|
|
956 eap->arg = tmp_new;
|
|
|
957 do_exedit(eap, old_curwin);
|
|
|
958
|
|
|
959 if (curwin != old_curwin) /* split must have worked */
|
|
|
960 {
|
|
|
961 /* Set 'diff', 'scrollbind' on and 'wrap' off. */
|
|
|
962 diff_win_options(curwin, TRUE);
|
|
|
963 diff_win_options(old_curwin, TRUE);
|
|
|
964
|
|
|
965 if (newname != NULL)
|
|
|
966 {
|
|
|
967 /* do a ":file filename.new" on the patched buffer */
|
|
|
968 eap->arg = newname;
|
|
|
969 ex_file(eap);
|
|
|
970
|
|
|
971 #ifdef FEAT_AUTOCMD
|
|
|
972 /* Do filetype detection with the new name. */
|
|
|
973 do_cmdline_cmd((char_u *)":doau filetypedetect BufRead");
|
|
|
974 #endif
|
|
|
975 }
|
|
|
976 }
|
|
|
977 }
|
|
|
978
|
|
|
979 theend:
|
|
|
980 if (tmp_orig != NULL)
|
|
|
981 mch_remove(tmp_orig);
|
|
|
982 vim_free(tmp_orig);
|
|
|
983 if (tmp_new != NULL)
|
|
|
984 mch_remove(tmp_new);
|
|
|
985 vim_free(tmp_new);
|
|
|
986 vim_free(newname);
|
|
|
987 vim_free(buf);
|
|
|
988 #ifdef UNIX
|
|
|
989 vim_free(fullname);
|
|
|
990 #endif
|
|
|
991 #ifdef FEAT_BROWSE
|
|
|
992 vim_free(browseFile);
|
|
|
993 cmdmod.browse = browse_flag;
|
|
|
994 #endif
|
|
|
995 }
|
|
|
996
|
|
|
997 /*
|
|
|
998 * Split the window and edit another file, setting options to show the diffs.
|
|
|
999 */
|
|
|
1000 void
|
|
|
1001 ex_diffsplit(eap)
|
|
|
1002 exarg_T *eap;
|
|
|
1003 {
|
|
|
1004 win_T *old_curwin = curwin;
|
|
|
1005
|
|
|
1006 #ifdef FEAT_GUI
|
|
|
1007 need_mouse_correct = TRUE;
|
|
|
1008 #endif
|
|
|
1009 if (win_split(0, 0) != FAIL)
|
|
|
1010 {
|
|
|
1011 /* Pretend it was a ":split fname" command */
|
|
|
1012 eap->cmdidx = CMD_split;
|
|
|
1013 do_exedit(eap, old_curwin);
|
|
|
1014
|
|
|
1015 if (curwin != old_curwin) /* split must have worked */
|
|
|
1016 {
|
|
|
1017 /* Set 'diff', 'scrollbind' on and 'wrap' off. */
|
|
|
1018 diff_win_options(curwin, TRUE);
|
|
|
1019 diff_win_options(old_curwin, TRUE);
|
|
|
1020 }
|
|
|
1021 }
|
|
|
1022 }
|
|
|
1023
|
|
|
1024 /*
|
|
|
1025 * Set options to show difs for the current window.
|
|
|
1026 */
|
|
|
1027 /*ARGSUSED*/
|
|
|
1028 void
|
|
|
1029 ex_diffthis(eap)
|
|
|
1030 exarg_T *eap;
|
|
|
1031 {
|
|
|
1032 /* Set 'diff', 'scrollbind' on and 'wrap' off. */
|
|
|
1033 diff_win_options(curwin, TRUE);
|
|
|
1034 }
|
|
|
1035
|
|
|
1036 /*
|
|
|
1037 * Set options in window "wp" for diff mode.
|
|
|
1038 */
|
|
|
1039 void
|
|
|
1040 diff_win_options(wp, addbuf)
|
|
|
1041 win_T *wp;
|
|
|
1042 int addbuf; /* Add buffer to diff. */
|
|
|
1043 {
|
|
|
1044 wp->w_p_diff = TRUE;
|
|
|
1045 wp->w_p_scb = TRUE;
|
|
|
1046 wp->w_p_wrap = FALSE;
|
|
|
1047 # ifdef FEAT_FOLDING
|
|
|
1048 {
|
|
|
1049 win_T *old_curwin = curwin;
|
|
|
1050
|
|
|
1051 curwin = wp;
|
|
|
1052 curbuf = curwin->w_buffer;
|
|
|
1053 set_string_option_direct((char_u *)"fdm", -1, (char_u *)"diff",
|
|
|
1054 OPT_LOCAL|OPT_FREE);
|
|
|
1055 curwin = old_curwin;
|
|
|
1056 curbuf = curwin->w_buffer;
|
|
|
1057 wp->w_p_fdc = 2;
|
|
|
1058 wp->w_p_fen = TRUE;
|
|
|
1059 wp->w_p_fdl = 0;
|
|
|
1060 foldUpdateAll(wp);
|
|
16
|
1061 /* make sure topline is not halfway a fold */
|
|
|
1062 changed_window_setting_win(wp);
|
|
7
|
1063 }
|
|
|
1064 # endif
|
|
|
1065 #ifdef FEAT_SCROLLBIND
|
|
|
1066 if (vim_strchr(p_sbo, 'h') == NULL)
|
|
|
1067 do_cmdline_cmd((char_u *)"set sbo+=hor");
|
|
|
1068 #endif
|
|
|
1069
|
|
|
1070 if (addbuf)
|
|
|
1071 diff_buf_add(wp->w_buffer);
|
|
|
1072 redraw_win_later(wp, NOT_VALID);
|
|
|
1073 }
|
|
|
1074
|
|
|
1075 /*
|
|
16
|
1076 * Set options not to show diffs. For the current window or all windows.
|
|
|
1077 */
|
|
|
1078 void
|
|
|
1079 ex_diffoff(eap)
|
|
|
1080 exarg_T *eap;
|
|
|
1081 {
|
|
|
1082 win_T *wp;
|
|
|
1083 win_T *old_curwin = curwin;
|
|
|
1084 #ifdef FEAT_SCROLLBIND
|
|
|
1085 int diffwin = FALSE;
|
|
|
1086 #endif
|
|
|
1087
|
|
|
1088 for (wp = firstwin; wp != NULL; wp = wp->w_next)
|
|
|
1089 {
|
|
|
1090 if (wp == curwin || eap->forceit)
|
|
|
1091 {
|
|
|
1092 /* Set 'diff', 'scrollbind' off and 'wrap' on. */
|
|
|
1093 wp->w_p_diff = FALSE;
|
|
|
1094 wp->w_p_scb = FALSE;
|
|
|
1095 wp->w_p_wrap = TRUE;
|
|
|
1096 #ifdef FEAT_FOLDING
|
|
|
1097 curwin = wp;
|
|
|
1098 curbuf = curwin->w_buffer;
|
|
|
1099 set_string_option_direct((char_u *)"fdm", -1,
|
|
|
1100 (char_u *)"manual", OPT_LOCAL|OPT_FREE);
|
|
|
1101 curwin = old_curwin;
|
|
|
1102 curbuf = curwin->w_buffer;
|
|
|
1103 wp->w_p_fdc = 0;
|
|
|
1104 wp->w_p_fen = FALSE;
|
|
|
1105 wp->w_p_fdl = 0;
|
|
|
1106 foldUpdateAll(wp);
|
|
|
1107 /* make sure topline is not halfway a fold */
|
|
|
1108 changed_window_setting_win(wp);
|
|
|
1109 #endif
|
|
|
1110 diff_buf_adjust(wp);
|
|
|
1111 }
|
|
|
1112 #ifdef FEAT_SCROLLBIND
|
|
|
1113 diffwin |= wp->w_p_diff;
|
|
|
1114 #endif
|
|
|
1115 }
|
|
|
1116
|
|
|
1117 #ifdef FEAT_SCROLLBIND
|
|
|
1118 /* Remove "hor" from from 'scrollopt' if there are no diff windows left. */
|
|
|
1119 if (!diffwin && vim_strchr(p_sbo, 'h') != NULL)
|
|
|
1120 do_cmdline_cmd((char_u *)"set sbo-=hor");
|
|
|
1121 #endif
|
|
|
1122 }
|
|
|
1123
|
|
|
1124 /*
|
|
7
|
1125 * Read the diff output and add each entry to the diff list.
|
|
|
1126 */
|
|
|
1127 static void
|
|
|
1128 diff_read(idx_orig, idx_new, fname)
|
|
|
1129 int idx_orig; /* idx of original file */
|
|
|
1130 int idx_new; /* idx of new file */
|
|
|
1131 char_u *fname; /* name of diff output file */
|
|
|
1132 {
|
|
|
1133 FILE *fd;
|
|
|
1134 diff_T *dprev = NULL;
|
|
|
1135 diff_T *dp = first_diff;
|
|
|
1136 diff_T *dn, *dpl;
|
|
|
1137 long f1, l1, f2, l2;
|
|
|
1138 char_u linebuf[LBUFLEN]; /* only need to hold the diff line */
|
|
|
1139 int difftype;
|
|
|
1140 char_u *p;
|
|
|
1141 long off;
|
|
|
1142 int i;
|
|
|
1143 linenr_T lnum_orig, lnum_new;
|
|
|
1144 long count_orig, count_new;
|
|
|
1145 int notset = TRUE; /* block "*dp" not set yet */
|
|
|
1146
|
|
|
1147 fd = fopen((char *)fname, "r");
|
|
|
1148 if (fd == NULL)
|
|
|
1149 {
|
|
|
1150 EMSG(_("E98: Cannot read diff output"));
|
|
|
1151 return;
|
|
|
1152 }
|
|
|
1153
|
|
|
1154 for (;;)
|
|
|
1155 {
|
|
|
1156 if (tag_fgets(linebuf, LBUFLEN, fd))
|
|
|
1157 break; /* end of file */
|
|
|
1158 if (!isdigit(*linebuf))
|
|
|
1159 continue; /* not the start of a diff block */
|
|
|
1160
|
|
|
1161 /* This line must be one of three formats:
|
|
|
1162 * {first}[,{last}]c{first}[,{last}]
|
|
|
1163 * {first}a{first}[,{last}]
|
|
|
1164 * {first}[,{last}]d{first}
|
|
|
1165 */
|
|
|
1166 p = linebuf;
|
|
|
1167 f1 = getdigits(&p);
|
|
|
1168 if (*p == ',')
|
|
|
1169 {
|
|
|
1170 ++p;
|
|
|
1171 l1 = getdigits(&p);
|
|
|
1172 }
|
|
|
1173 else
|
|
|
1174 l1 = f1;
|
|
|
1175 if (*p != 'a' && *p != 'c' && *p != 'd')
|
|
|
1176 continue; /* invalid diff format */
|
|
|
1177 difftype = *p++;
|
|
|
1178 f2 = getdigits(&p);
|
|
|
1179 if (*p == ',')
|
|
|
1180 {
|
|
|
1181 ++p;
|
|
|
1182 l2 = getdigits(&p);
|
|
|
1183 }
|
|
|
1184 else
|
|
|
1185 l2 = f2;
|
|
|
1186 if (l1 < f1 || l2 < f2)
|
|
|
1187 continue; /* invalid line range */
|
|
|
1188
|
|
|
1189 if (difftype == 'a')
|
|
|
1190 {
|
|
|
1191 lnum_orig = f1 + 1;
|
|
|
1192 count_orig = 0;
|
|
|
1193 }
|
|
|
1194 else
|
|
|
1195 {
|
|
|
1196 lnum_orig = f1;
|
|
|
1197 count_orig = l1 - f1 + 1;
|
|
|
1198 }
|
|
|
1199 if (difftype == 'd')
|
|
|
1200 {
|
|
|
1201 lnum_new = f2 + 1;
|
|
|
1202 count_new = 0;
|
|
|
1203 }
|
|
|
1204 else
|
|
|
1205 {
|
|
|
1206 lnum_new = f2;
|
|
|
1207 count_new = l2 - f2 + 1;
|
|
|
1208 }
|
|
|
1209
|
|
|
1210 /* Go over blocks before the change, for which orig and new are equal.
|
|
|
1211 * Copy blocks from orig to new. */
|
|
|
1212 while (dp != NULL
|
|
|
1213 && lnum_orig > dp->df_lnum[idx_orig] + dp->df_count[idx_orig])
|
|
|
1214 {
|
|
|
1215 if (notset)
|
|
|
1216 diff_copy_entry(dprev, dp, idx_orig, idx_new);
|
|
|
1217 dprev = dp;
|
|
|
1218 dp = dp->df_next;
|
|
|
1219 notset = TRUE;
|
|
|
1220 }
|
|
|
1221
|
|
|
1222 if (dp != NULL
|
|
|
1223 && lnum_orig <= dp->df_lnum[idx_orig] + dp->df_count[idx_orig]
|
|
|
1224 && lnum_orig + count_orig >= dp->df_lnum[idx_orig])
|
|
|
1225 {
|
|
|
1226 /* New block overlaps with existing block(s).
|
|
|
1227 * First find last block that overlaps. */
|
|
|
1228 for (dpl = dp; dpl->df_next != NULL; dpl = dpl->df_next)
|
|
|
1229 if (lnum_orig + count_orig < dpl->df_next->df_lnum[idx_orig])
|
|
|
1230 break;
|
|
|
1231
|
|
|
1232 /* If the newly found block starts before the old one, set the
|
|
|
1233 * start back a number of lines. */
|
|
|
1234 off = dp->df_lnum[idx_orig] - lnum_orig;
|
|
|
1235 if (off > 0)
|
|
|
1236 {
|
|
|
1237 for (i = idx_orig; i < idx_new; ++i)
|
|
|
1238 if (diffbuf[i] != NULL)
|
|
|
1239 dp->df_lnum[i] -= off;
|
|
|
1240 dp->df_lnum[idx_new] = lnum_new;
|
|
|
1241 dp->df_count[idx_new] = count_new;
|
|
|
1242 }
|
|
|
1243 else if (notset)
|
|
|
1244 {
|
|
|
1245 /* new block inside existing one, adjust new block */
|
|
|
1246 dp->df_lnum[idx_new] = lnum_new + off;
|
|
|
1247 dp->df_count[idx_new] = count_new - off;
|
|
|
1248 }
|
|
|
1249 else
|
|
|
1250 /* second overlap of new block with existing block */
|
|
|
1251 dp->df_count[idx_new] += count_new - count_orig;
|
|
|
1252
|
|
|
1253 /* Adjust the size of the block to include all the lines to the
|
|
|
1254 * end of the existing block or the new diff, whatever ends last. */
|
|
|
1255 off = (lnum_orig + count_orig)
|
|
|
1256 - (dpl->df_lnum[idx_orig] + dpl->df_count[idx_orig]);
|
|
|
1257 if (off < 0)
|
|
|
1258 {
|
|
|
1259 /* new change ends in existing block, adjust the end if not
|
|
|
1260 * done already */
|
|
|
1261 if (notset)
|
|
|
1262 dp->df_count[idx_new] += -off;
|
|
|
1263 off = 0;
|
|
|
1264 }
|
|
|
1265 for (i = idx_orig; i < idx_new + !notset; ++i)
|
|
|
1266 if (diffbuf[i] != NULL)
|
|
|
1267 dp->df_count[i] = dpl->df_lnum[i] + dpl->df_count[i]
|
|
|
1268 - dp->df_lnum[i] + off;
|
|
|
1269
|
|
|
1270 /* Delete the diff blocks that have been merged into one. */
|
|
|
1271 dn = dp->df_next;
|
|
|
1272 dp->df_next = dpl->df_next;
|
|
|
1273 while (dn != dp->df_next)
|
|
|
1274 {
|
|
|
1275 dpl = dn->df_next;
|
|
|
1276 vim_free(dn);
|
|
|
1277 dn = dpl;
|
|
|
1278 }
|
|
|
1279 }
|
|
|
1280 else
|
|
|
1281 {
|
|
|
1282 /* Allocate a new diffblock. */
|
|
|
1283 dp = diff_alloc_new(dprev, dp);
|
|
|
1284 if (dp == NULL)
|
|
|
1285 return;
|
|
|
1286
|
|
|
1287 dp->df_lnum[idx_orig] = lnum_orig;
|
|
|
1288 dp->df_count[idx_orig] = count_orig;
|
|
|
1289 dp->df_lnum[idx_new] = lnum_new;
|
|
|
1290 dp->df_count[idx_new] = count_new;
|
|
|
1291
|
|
|
1292 /* Set values for other buffers, these must be equal to the
|
|
|
1293 * original buffer, otherwise there would have been a change
|
|
|
1294 * already. */
|
|
|
1295 for (i = idx_orig + 1; i < idx_new; ++i)
|
|
|
1296 if (diffbuf[i] != NULL)
|
|
|
1297 diff_copy_entry(dprev, dp, idx_orig, i);
|
|
|
1298 }
|
|
|
1299 notset = FALSE; /* "*dp" has been set */
|
|
|
1300 }
|
|
|
1301
|
|
|
1302 /* for remaining diff blocks orig and new are equal */
|
|
|
1303 while (dp != NULL)
|
|
|
1304 {
|
|
|
1305 if (notset)
|
|
|
1306 diff_copy_entry(dprev, dp, idx_orig, idx_new);
|
|
|
1307 dprev = dp;
|
|
|
1308 dp = dp->df_next;
|
|
|
1309 notset = TRUE;
|
|
|
1310 }
|
|
|
1311
|
|
|
1312 fclose(fd);
|
|
|
1313 }
|
|
|
1314
|
|
|
1315 /*
|
|
|
1316 * Copy an entry at "dp" from "idx_orig" to "idx_new".
|
|
|
1317 */
|
|
|
1318 static void
|
|
|
1319 diff_copy_entry(dprev, dp, idx_orig, idx_new)
|
|
|
1320 diff_T *dprev;
|
|
|
1321 diff_T *dp;
|
|
|
1322 int idx_orig;
|
|
|
1323 int idx_new;
|
|
|
1324 {
|
|
|
1325 long off;
|
|
|
1326
|
|
|
1327 if (dprev == NULL)
|
|
|
1328 off = 0;
|
|
|
1329 else
|
|
|
1330 off = (dprev->df_lnum[idx_orig] + dprev->df_count[idx_orig])
|
|
|
1331 - (dprev->df_lnum[idx_new] + dprev->df_count[idx_new]);
|
|
|
1332 dp->df_lnum[idx_new] = dp->df_lnum[idx_orig] - off;
|
|
|
1333 dp->df_count[idx_new] = dp->df_count[idx_orig];
|
|
|
1334 }
|
|
|
1335
|
|
|
1336 /*
|
|
|
1337 * Clear the list of diffblocks.
|
|
|
1338 */
|
|
|
1339 static void
|
|
|
1340 diff_clear()
|
|
|
1341 {
|
|
|
1342 diff_T *p, *next_p;
|
|
|
1343
|
|
|
1344 for (p = first_diff; p != NULL; p = next_p)
|
|
|
1345 {
|
|
|
1346 next_p = p->df_next;
|
|
|
1347 vim_free(p);
|
|
|
1348 }
|
|
|
1349 first_diff = NULL;
|
|
|
1350 }
|
|
|
1351
|
|
|
1352 /*
|
|
|
1353 * Check diff status for line "lnum" in buffer "buf":
|
|
|
1354 * Returns 0 for nothing special
|
|
|
1355 * Returns -1 for a line that should be highlighted as changed.
|
|
|
1356 * Returns -2 for a line that should be highlighted as added/deleted.
|
|
|
1357 * Returns > 0 for inserting that many filler lines above it (never happens
|
|
|
1358 * when 'diffopt' doesn't contain "filler").
|
|
|
1359 * This should only be used for windows where 'diff' is set.
|
|
|
1360 */
|
|
|
1361 int
|
|
|
1362 diff_check(wp, lnum)
|
|
|
1363 win_T *wp;
|
|
|
1364 linenr_T lnum;
|
|
|
1365 {
|
|
|
1366 int idx; /* index in diffbuf[] for this buffer */
|
|
|
1367 diff_T *dp;
|
|
|
1368 int maxcount;
|
|
|
1369 int i;
|
|
|
1370 buf_T *buf = wp->w_buffer;
|
|
|
1371 int cmp;
|
|
|
1372
|
|
|
1373 if (diff_invalid)
|
|
|
1374 ex_diffupdate(NULL); /* update after a big change */
|
|
|
1375
|
|
|
1376 if (first_diff == NULL || !wp->w_p_diff) /* no diffs at all */
|
|
|
1377 return 0;
|
|
|
1378
|
|
|
1379 /* safety check: "lnum" must be a buffer line */
|
|
|
1380 if (lnum < 1 || lnum > buf->b_ml.ml_line_count + 1)
|
|
|
1381 return 0;
|
|
|
1382
|
|
|
1383 idx = diff_buf_idx(buf);
|
|
|
1384 if (idx == DB_COUNT)
|
|
|
1385 return 0; /* no diffs for buffer "buf" */
|
|
|
1386
|
|
|
1387 #ifdef FEAT_FOLDING
|
|
|
1388 /* A closed fold never has filler lines. */
|
|
|
1389 if (hasFoldingWin(wp, lnum, NULL, NULL, TRUE, NULL))
|
|
|
1390 return 0;
|
|
|
1391 #endif
|
|
|
1392
|
|
|
1393 /* search for a change that includes "lnum" in the list of diffblocks. */
|
|
|
1394 for (dp = first_diff; dp != NULL; dp = dp->df_next)
|
|
|
1395 if (lnum <= dp->df_lnum[idx] + dp->df_count[idx])
|
|
|
1396 break;
|
|
|
1397 if (dp == NULL || lnum < dp->df_lnum[idx])
|
|
|
1398 return 0;
|
|
|
1399
|
|
|
1400 if (lnum < dp->df_lnum[idx] + dp->df_count[idx])
|
|
|
1401 {
|
|
|
1402 int zero = FALSE;
|
|
|
1403
|
|
|
1404 /* Changed or inserted line. If the other buffers have a count of
|
|
|
1405 * zero, the lines were inserted. If the other buffers have the same
|
|
|
1406 * count, check if the lines are identical. */
|
|
|
1407 cmp = FALSE;
|
|
|
1408 for (i = 0; i < DB_COUNT; ++i)
|
|
|
1409 if (i != idx && diffbuf[i] != NULL)
|
|
|
1410 {
|
|
|
1411 if (dp->df_count[i] == 0)
|
|
|
1412 zero = TRUE;
|
|
|
1413 else
|
|
|
1414 {
|
|
|
1415 if (dp->df_count[i] != dp->df_count[idx])
|
|
|
1416 return -1; /* nr of lines changed. */
|
|
|
1417 cmp = TRUE;
|
|
|
1418 }
|
|
|
1419 }
|
|
|
1420 if (cmp)
|
|
|
1421 {
|
|
|
1422 /* Compare all lines. If they are equal the lines were inserted
|
|
|
1423 * in some buffers, deleted in others, but not changed. */
|
|
|
1424 for (i = 0; i < DB_COUNT; ++i)
|
|
|
1425 if (i != idx && diffbuf[i] != NULL && dp->df_count[i] != 0)
|
|
|
1426 if (!diff_equal_entry(dp, idx, i))
|
|
|
1427 return -1;
|
|
|
1428 }
|
|
|
1429 /* If there is no buffer with zero lines then there is no difference
|
|
|
1430 * any longer. Happens when making a change (or undo) that removes
|
|
|
1431 * the difference. Can't remove the entry here, we might be halfway
|
|
|
1432 * updating the window. Just report the text as unchanged. Other
|
|
|
1433 * windows might still show the change though. */
|
|
|
1434 if (zero == FALSE)
|
|
|
1435 return 0;
|
|
|
1436 return -2;
|
|
|
1437 }
|
|
|
1438
|
|
|
1439 /* If 'diffopt' doesn't contain "filler", return 0. */
|
|
|
1440 if (!(diff_flags & DIFF_FILLER))
|
|
|
1441 return 0;
|
|
|
1442
|
|
|
1443 /* Insert filler lines above the line just below the change. Will return
|
|
|
1444 * 0 when this buf had the max count. */
|
|
|
1445 maxcount = 0;
|
|
|
1446 for (i = 0; i < DB_COUNT; ++i)
|
|
|
1447 if (diffbuf[i] != NULL && dp->df_count[i] > maxcount)
|
|
|
1448 maxcount = dp->df_count[i];
|
|
|
1449 return maxcount - dp->df_count[idx];
|
|
|
1450 }
|
|
|
1451
|
|
|
1452 /*
|
|
|
1453 * Compare two entries in diff "*dp" and return TRUE if they are equal.
|
|
|
1454 */
|
|
|
1455 static int
|
|
|
1456 diff_equal_entry(dp, idx1, idx2)
|
|
|
1457 diff_T *dp;
|
|
|
1458 int idx1;
|
|
|
1459 int idx2;
|
|
|
1460 {
|
|
|
1461 int i;
|
|
|
1462 char_u *line;
|
|
|
1463 int cmp;
|
|
|
1464
|
|
|
1465 if (dp->df_count[idx1] != dp->df_count[idx2])
|
|
|
1466 return FALSE;
|
|
|
1467 if (diff_check_sanity(dp) == FAIL)
|
|
|
1468 return FALSE;
|
|
|
1469 for (i = 0; i < dp->df_count[idx1]; ++i)
|
|
|
1470 {
|
|
|
1471 line = vim_strsave(ml_get_buf(diffbuf[idx1],
|
|
|
1472 dp->df_lnum[idx1] + i, FALSE));
|
|
|
1473 if (line == NULL)
|
|
|
1474 return FALSE;
|
|
|
1475 cmp = diff_cmp(line, ml_get_buf(diffbuf[idx2],
|
|
|
1476 dp->df_lnum[idx2] + i, FALSE));
|
|
|
1477 vim_free(line);
|
|
|
1478 if (cmp != 0)
|
|
|
1479 return FALSE;
|
|
|
1480 }
|
|
|
1481 return TRUE;
|
|
|
1482 }
|
|
|
1483
|
|
|
1484 /*
|
|
|
1485 * Compare strings "s1" and "s2" according to 'diffopt'.
|
|
|
1486 * Return non-zero when they are different.
|
|
|
1487 */
|
|
|
1488 static int
|
|
|
1489 diff_cmp(s1, s2)
|
|
|
1490 char_u *s1;
|
|
|
1491 char_u *s2;
|
|
|
1492 {
|
|
|
1493 char_u *p1, *p2;
|
|
|
1494 #ifdef FEAT_MBYTE
|
|
|
1495 int l;
|
|
|
1496 #endif
|
|
|
1497
|
|
|
1498 if ((diff_flags & (DIFF_ICASE | DIFF_IWHITE)) == 0)
|
|
|
1499 return STRCMP(s1, s2);
|
|
|
1500 if ((diff_flags & DIFF_ICASE) && !(diff_flags & DIFF_IWHITE))
|
|
|
1501 return MB_STRICMP(s1, s2);
|
|
|
1502
|
|
|
1503 /* Ignore white space changes and possibly ignore case. */
|
|
|
1504 p1 = s1;
|
|
|
1505 p2 = s2;
|
|
|
1506 while (*p1 != NUL && *p2 != NUL)
|
|
|
1507 {
|
|
|
1508 if (vim_iswhite(*p1) && vim_iswhite(*p2))
|
|
|
1509 {
|
|
|
1510 p1 = skipwhite(p1);
|
|
|
1511 p2 = skipwhite(p2);
|
|
|
1512 }
|
|
|
1513 else
|
|
|
1514 {
|
|
|
1515 #ifdef FEAT_MBYTE
|
|
|
1516 l = (*mb_ptr2len_check)(p1);
|
|
|
1517 if (l != (*mb_ptr2len_check)(p2))
|
|
|
1518 break;
|
|
|
1519 if (l > 1)
|
|
|
1520 {
|
|
|
1521 if (STRNCMP(p1, p2, l) != 0
|
|
|
1522 && (!enc_utf8
|
|
|
1523 || !(diff_flags & DIFF_ICASE)
|
|
|
1524 || utf_fold(utf_ptr2char(p1))
|
|
|
1525 != utf_fold(utf_ptr2char(p2))))
|
|
|
1526 break;
|
|
|
1527 p1 += l;
|
|
|
1528 p2 += l;
|
|
|
1529 }
|
|
|
1530 else
|
|
|
1531 #endif
|
|
|
1532 {
|
|
|
1533 if (*p1 != *p2 && (!(diff_flags & DIFF_ICASE)
|
|
|
1534 || TOLOWER_LOC(*p1) != TOLOWER_LOC(*p2)))
|
|
|
1535 break;
|
|
|
1536 ++p1;
|
|
|
1537 ++p2;
|
|
|
1538 }
|
|
|
1539 }
|
|
|
1540 }
|
|
|
1541
|
|
|
1542 /* Ignore trailing white space. */
|
|
|
1543 p1 = skipwhite(p1);
|
|
|
1544 p2 = skipwhite(p2);
|
|
|
1545 if (*p1 != NUL || *p2 != NUL)
|
|
|
1546 return 1;
|
|
|
1547 return 0;
|
|
|
1548 }
|
|
|
1549
|
|
|
1550 /*
|
|
|
1551 * Return the number of filler lines above "lnum".
|
|
|
1552 */
|
|
|
1553 int
|
|
|
1554 diff_check_fill(wp, lnum)
|
|
|
1555 win_T *wp;
|
|
|
1556 linenr_T lnum;
|
|
|
1557 {
|
|
|
1558 int n;
|
|
|
1559
|
|
|
1560 /* be quick when there are no filler lines */
|
|
|
1561 if (!(diff_flags & DIFF_FILLER))
|
|
|
1562 return 0;
|
|
|
1563 n = diff_check(wp, lnum);
|
|
|
1564 if (n <= 0)
|
|
|
1565 return 0;
|
|
|
1566 return n;
|
|
|
1567 }
|
|
|
1568
|
|
|
1569 /*
|
|
|
1570 * Set the topline of "towin" to match the position in "fromwin", so that they
|
|
|
1571 * show the same diff'ed lines.
|
|
|
1572 */
|
|
|
1573 void
|
|
|
1574 diff_set_topline(fromwin, towin)
|
|
|
1575 win_T *fromwin;
|
|
|
1576 win_T *towin;
|
|
|
1577 {
|
|
|
1578 buf_T *buf = fromwin->w_buffer;
|
|
|
1579 linenr_T lnum = fromwin->w_topline;
|
|
|
1580 int idx;
|
|
|
1581 diff_T *dp;
|
|
|
1582 int i;
|
|
|
1583
|
|
|
1584 idx = diff_buf_idx(buf);
|
|
|
1585 if (idx == DB_COUNT)
|
|
|
1586 return; /* safety check */
|
|
|
1587
|
|
|
1588 if (diff_invalid)
|
|
|
1589 ex_diffupdate(NULL); /* update after a big change */
|
|
|
1590
|
|
|
1591 towin->w_topfill = 0;
|
|
|
1592
|
|
|
1593 /* search for a change that includes "lnum" in the list of diffblocks. */
|
|
|
1594 for (dp = first_diff; dp != NULL; dp = dp->df_next)
|
|
|
1595 if (lnum <= dp->df_lnum[idx] + dp->df_count[idx])
|
|
|
1596 break;
|
|
|
1597 if (dp == NULL)
|
|
|
1598 {
|
|
|
1599 /* After last change, compute topline relative to end of file; no
|
|
|
1600 * filler lines. */
|
|
|
1601 towin->w_topline = towin->w_buffer->b_ml.ml_line_count
|
|
|
1602 - (buf->b_ml.ml_line_count - lnum);
|
|
|
1603 }
|
|
|
1604 else
|
|
|
1605 {
|
|
|
1606 /* Find index for "towin". */
|
|
|
1607 i = diff_buf_idx(towin->w_buffer);
|
|
|
1608 if (i == DB_COUNT)
|
|
|
1609 return; /* safety check */
|
|
|
1610
|
|
|
1611 towin->w_topline = lnum + (dp->df_lnum[i] - dp->df_lnum[idx]);
|
|
|
1612 if (lnum >= dp->df_lnum[idx])
|
|
|
1613 {
|
|
|
1614 /* Inside a change: compute filler lines. */
|
|
|
1615 if (dp->df_count[i] == dp->df_count[idx])
|
|
|
1616 towin->w_topfill = fromwin->w_topfill;
|
|
|
1617 else if (dp->df_count[i] > dp->df_count[idx])
|
|
|
1618 {
|
|
|
1619 if (lnum == dp->df_lnum[idx] + dp->df_count[idx])
|
|
|
1620 towin->w_topline = dp->df_lnum[i] + dp->df_count[i]
|
|
|
1621 - fromwin->w_topfill;
|
|
|
1622 }
|
|
|
1623 else
|
|
|
1624 {
|
|
|
1625 if (towin->w_topline >= dp->df_lnum[i] + dp->df_count[i])
|
|
|
1626 {
|
|
|
1627 if (diff_flags & DIFF_FILLER)
|
|
|
1628 towin->w_topfill = dp->df_lnum[idx]
|
|
|
1629 + dp->df_count[idx] - lnum;
|
|
|
1630 towin->w_topline = dp->df_lnum[i] + dp->df_count[i];
|
|
|
1631 }
|
|
|
1632 }
|
|
|
1633 }
|
|
|
1634 }
|
|
|
1635
|
|
|
1636 /* safety check (if diff info gets outdated strange things may happen) */
|
|
|
1637 towin->w_botfill = FALSE;
|
|
|
1638 if (towin->w_topline > towin->w_buffer->b_ml.ml_line_count)
|
|
|
1639 {
|
|
|
1640 towin->w_topline = towin->w_buffer->b_ml.ml_line_count;
|
|
|
1641 towin->w_botfill = TRUE;
|
|
|
1642 }
|
|
|
1643 if (towin->w_topline < 1)
|
|
|
1644 {
|
|
|
1645 towin->w_topline = 1;
|
|
|
1646 towin->w_topfill = 0;
|
|
|
1647 }
|
|
|
1648
|
|
|
1649 /* When w_topline changes need to recompute w_botline and cursor position */
|
|
|
1650 invalidate_botline_win(towin);
|
|
|
1651 changed_line_abv_curs_win(towin);
|
|
|
1652
|
|
|
1653 check_topfill(towin, FALSE);
|
|
|
1654 #ifdef FEAT_FOLDING
|
|
|
1655 (void)hasFoldingWin(towin, towin->w_topline, &towin->w_topline,
|
|
|
1656 NULL, TRUE, NULL);
|
|
|
1657 #endif
|
|
|
1658 }
|
|
|
1659
|
|
|
1660 /*
|
|
|
1661 * This is called when 'diffopt' is changed.
|
|
|
1662 */
|
|
|
1663 int
|
|
|
1664 diffopt_changed()
|
|
|
1665 {
|
|
|
1666 char_u *p;
|
|
|
1667 int diff_context_new = 6;
|
|
|
1668 int diff_flags_new = 0;
|
|
|
1669
|
|
|
1670 p = p_dip;
|
|
|
1671 while (*p != NUL)
|
|
|
1672 {
|
|
|
1673 if (STRNCMP(p, "filler", 6) == 0)
|
|
|
1674 {
|
|
|
1675 p += 6;
|
|
|
1676 diff_flags_new |= DIFF_FILLER;
|
|
|
1677 }
|
|
|
1678 else if (STRNCMP(p, "context:", 8) == 0 && VIM_ISDIGIT(p[8]))
|
|
|
1679 {
|
|
|
1680 p += 8;
|
|
|
1681 diff_context_new = getdigits(&p);
|
|
|
1682 }
|
|
|
1683 else if (STRNCMP(p, "icase", 5) == 0)
|
|
|
1684 {
|
|
|
1685 p += 5;
|
|
|
1686 diff_flags_new |= DIFF_ICASE;
|
|
|
1687 }
|
|
|
1688 else if (STRNCMP(p, "iwhite", 6) == 0)
|
|
|
1689 {
|
|
|
1690 p += 6;
|
|
|
1691 diff_flags_new |= DIFF_IWHITE;
|
|
|
1692 }
|
|
|
1693 if (*p != ',' && *p != NUL)
|
|
|
1694 return FAIL;
|
|
|
1695 if (*p == ',')
|
|
|
1696 ++p;
|
|
|
1697 }
|
|
|
1698
|
|
|
1699 /* If "icase" or "iwhite" was added or removed, need to update the diff. */
|
|
|
1700 if (diff_flags != diff_flags_new)
|
|
|
1701 diff_invalid = TRUE;
|
|
|
1702
|
|
|
1703 diff_flags = diff_flags_new;
|
|
|
1704 diff_context = diff_context_new;
|
|
|
1705
|
|
|
1706 diff_redraw(TRUE);
|
|
|
1707
|
|
|
1708 /* recompute the scroll binding with the new option value, may
|
|
|
1709 * remove or add filler lines */
|
|
|
1710 check_scrollbind((linenr_T)0, 0L);
|
|
|
1711
|
|
|
1712 return OK;
|
|
|
1713 }
|
|
|
1714
|
|
|
1715 /*
|
|
|
1716 * Find the difference within a changed line.
|
|
|
1717 * Returns TRUE if the line was added, no other buffer has it.
|
|
|
1718 */
|
|
|
1719 int
|
|
|
1720 diff_find_change(wp, lnum, startp, endp)
|
|
|
1721 win_T *wp;
|
|
|
1722 linenr_T lnum;
|
|
|
1723 int *startp; /* first char of the change */
|
|
|
1724 int *endp; /* last char of the change */
|
|
|
1725 {
|
|
|
1726 char_u *line_org;
|
|
|
1727 char_u *line_new;
|
|
|
1728 int i;
|
|
|
1729 int si, ei_org, ei_new;
|
|
|
1730 diff_T *dp;
|
|
|
1731 int idx;
|
|
|
1732 int off;
|
|
|
1733 int added = TRUE;
|
|
|
1734
|
|
|
1735 /* Make a copy of the line, the next ml_get() will invalidate it. */
|
|
|
1736 line_org = vim_strsave(ml_get_buf(wp->w_buffer, lnum, FALSE));
|
|
|
1737 if (line_org == NULL)
|
|
|
1738 return FALSE;
|
|
|
1739
|
|
|
1740 idx = diff_buf_idx(wp->w_buffer);
|
|
|
1741 if (idx == DB_COUNT) /* cannot happen */
|
|
|
1742 return FALSE;
|
|
|
1743
|
|
|
1744 /* search for a change that includes "lnum" in the list of diffblocks. */
|
|
|
1745 for (dp = first_diff; dp != NULL; dp = dp->df_next)
|
|
|
1746 if (lnum <= dp->df_lnum[idx] + dp->df_count[idx])
|
|
|
1747 break;
|
|
|
1748 if (dp == NULL || diff_check_sanity(dp) == FAIL)
|
|
|
1749 return FALSE;
|
|
|
1750
|
|
|
1751 off = lnum - dp->df_lnum[idx];
|
|
|
1752
|
|
|
1753 for (i = 0; i < DB_COUNT; ++i)
|
|
|
1754 if (diffbuf[i] != NULL && i != idx)
|
|
|
1755 {
|
|
|
1756 /* Skip lines that are not in the other change (filler lines). */
|
|
|
1757 if (off >= dp->df_count[i])
|
|
|
1758 continue;
|
|
|
1759 added = FALSE;
|
|
|
1760 line_new = ml_get_buf(diffbuf[i], dp->df_lnum[i] + off, FALSE);
|
|
|
1761
|
|
|
1762 /* Search for start of difference */
|
|
|
1763 for (si = 0; line_org[si] != NUL && line_org[si] == line_new[si]; )
|
|
|
1764 ++si;
|
|
|
1765 #ifdef FEAT_MBYTE
|
|
|
1766 if (has_mbyte)
|
|
|
1767 {
|
|
|
1768 /* Move back to first byte of character in both lines (may
|
|
|
1769 * have "nn^" in line_org and "n^ in line_new). */
|
|
|
1770 si -= (*mb_head_off)(line_org, line_org + si);
|
|
|
1771 si -= (*mb_head_off)(line_new, line_new + si);
|
|
|
1772 }
|
|
|
1773 #endif
|
|
|
1774 if (*startp > si)
|
|
|
1775 *startp = si;
|
|
|
1776
|
|
|
1777 /* Search for end of difference, if any. */
|
|
|
1778 if (line_org[si] != NUL || line_new[si] != NUL)
|
|
|
1779 {
|
|
|
1780 ei_org = (int)STRLEN(line_org);
|
|
|
1781 ei_new = (int)STRLEN(line_new);
|
|
|
1782 while (ei_org >= *startp && ei_new >= *startp
|
|
|
1783 && ei_org >= 0 && ei_new >= 0
|
|
|
1784 && line_org[ei_org] == line_new[ei_new])
|
|
|
1785 {
|
|
|
1786 --ei_org;
|
|
|
1787 --ei_new;
|
|
|
1788 }
|
|
|
1789 if (*endp < ei_org)
|
|
|
1790 *endp = ei_org;
|
|
|
1791 }
|
|
|
1792 }
|
|
|
1793
|
|
|
1794 vim_free(line_org);
|
|
|
1795 return added;
|
|
|
1796 }
|
|
|
1797
|
|
|
1798 #if defined(FEAT_FOLDING) || defined(PROTO)
|
|
|
1799 /*
|
|
|
1800 * Return TRUE if line "lnum" is not close to a diff block, this line should
|
|
|
1801 * be in a fold.
|
|
|
1802 * Return FALSE if there are no diff blocks at all in this window.
|
|
|
1803 */
|
|
|
1804 int
|
|
|
1805 diff_infold(wp, lnum)
|
|
|
1806 win_T *wp;
|
|
|
1807 linenr_T lnum;
|
|
|
1808 {
|
|
|
1809 int i;
|
|
|
1810 int idx = -1;
|
|
|
1811 int other = FALSE;
|
|
|
1812 diff_T *dp;
|
|
|
1813
|
|
|
1814 /* Return if 'diff' isn't set. */
|
|
|
1815 if (!wp->w_p_diff)
|
|
|
1816 return FALSE;
|
|
|
1817
|
|
|
1818 for (i = 0; i < DB_COUNT; ++i)
|
|
|
1819 {
|
|
|
1820 if (diffbuf[i] == wp->w_buffer)
|
|
|
1821 idx = i;
|
|
|
1822 else if (diffbuf[i] != NULL)
|
|
|
1823 other = TRUE;
|
|
|
1824 }
|
|
|
1825
|
|
|
1826 /* return here if there are no diffs in the window */
|
|
|
1827 if (idx == -1 || !other)
|
|
|
1828 return FALSE;
|
|
|
1829
|
|
|
1830 if (diff_invalid)
|
|
|
1831 ex_diffupdate(NULL); /* update after a big change */
|
|
|
1832
|
|
|
1833 /* Return if there are no diff blocks. All lines will be folded. */
|
|
|
1834 if (first_diff == NULL)
|
|
|
1835 return TRUE;
|
|
|
1836
|
|
|
1837 for (dp = first_diff; dp != NULL; dp = dp->df_next)
|
|
|
1838 {
|
|
|
1839 /* If this change is below the line there can't be any further match. */
|
|
|
1840 if (dp->df_lnum[idx] - diff_context > lnum)
|
|
|
1841 break;
|
|
|
1842 /* If this change ends before the line we have a match. */
|
|
|
1843 if (dp->df_lnum[idx] + dp->df_count[idx] + diff_context > lnum)
|
|
|
1844 return FALSE;
|
|
|
1845 }
|
|
|
1846 return TRUE;
|
|
|
1847 }
|
|
|
1848 #endif
|
|
|
1849
|
|
|
1850 /*
|
|
|
1851 * "dp" and "do" commands.
|
|
|
1852 */
|
|
|
1853 void
|
|
|
1854 nv_diffgetput(put)
|
|
|
1855 int put;
|
|
|
1856 {
|
|
|
1857 exarg_T ea;
|
|
|
1858
|
|
|
1859 ea.arg = (char_u *)"";
|
|
|
1860 if (put)
|
|
|
1861 ea.cmdidx = CMD_diffput;
|
|
|
1862 else
|
|
|
1863 ea.cmdidx = CMD_diffget;
|
|
|
1864 ea.addr_count = 0;
|
|
|
1865 ea.line1 = curwin->w_cursor.lnum;
|
|
|
1866 ea.line2 = curwin->w_cursor.lnum;
|
|
|
1867 ex_diffgetput(&ea);
|
|
|
1868 }
|
|
|
1869
|
|
|
1870 /*
|
|
|
1871 * ":diffget"
|
|
|
1872 * ":diffput"
|
|
|
1873 */
|
|
|
1874 void
|
|
|
1875 ex_diffgetput(eap)
|
|
|
1876 exarg_T *eap;
|
|
|
1877 {
|
|
|
1878 linenr_T lnum;
|
|
|
1879 int count;
|
|
|
1880 linenr_T off = 0;
|
|
|
1881 diff_T *dp;
|
|
|
1882 diff_T *dprev;
|
|
|
1883 diff_T *dfree;
|
|
|
1884 int idx_cur;
|
|
|
1885 int idx_other;
|
|
|
1886 int idx_from;
|
|
|
1887 int idx_to;
|
|
|
1888 int i;
|
|
|
1889 int added;
|
|
|
1890 char_u *p;
|
|
|
1891 aco_save_T aco;
|
|
|
1892 buf_T *buf;
|
|
|
1893 int start_skip, end_skip;
|
|
|
1894 int new_count;
|
|
|
1895
|
|
|
1896 /* Find the current buffer in the list of diff buffers. */
|
|
|
1897 idx_cur = diff_buf_idx(curbuf);
|
|
|
1898 if (idx_cur == DB_COUNT)
|
|
|
1899 {
|
|
|
1900 EMSG(_("E99: Current buffer is not in diff mode"));
|
|
|
1901 return;
|
|
|
1902 }
|
|
|
1903
|
|
|
1904 if (*eap->arg == NUL)
|
|
|
1905 {
|
|
|
1906 /* No argument: Find the other buffer in the list of diff buffers. */
|
|
|
1907 for (idx_other = 0; idx_other < DB_COUNT; ++idx_other)
|
|
|
1908 if (diffbuf[idx_other] != curbuf && diffbuf[idx_other] != NULL)
|
|
|
1909 break;
|
|
|
1910 if (idx_other == DB_COUNT)
|
|
|
1911 {
|
|
|
1912 EMSG(_("E100: No other buffer in diff mode"));
|
|
|
1913 return;
|
|
|
1914 }
|
|
|
1915
|
|
|
1916 /* Check that there isn't a third buffer in the list */
|
|
|
1917 for (i = idx_other + 1; i < DB_COUNT; ++i)
|
|
|
1918 if (diffbuf[i] != curbuf && diffbuf[i] != NULL)
|
|
|
1919 {
|
|
|
1920 EMSG(_("E101: More than two buffers in diff mode, don't know which one to use"));
|
|
|
1921 return;
|
|
|
1922 }
|
|
|
1923 }
|
|
|
1924 else
|
|
|
1925 {
|
|
|
1926 /* Buffer number or pattern given. Ignore trailing white space. */
|
|
|
1927 p = eap->arg + STRLEN(eap->arg);
|
|
|
1928 while (p > eap->arg && vim_iswhite(p[-1]))
|
|
|
1929 --p;
|
|
|
1930 for (i = 0; vim_isdigit(eap->arg[i]) && eap->arg + i < p; ++i)
|
|
|
1931 ;
|
|
|
1932 if (eap->arg + i == p) /* digits only */
|
|
|
1933 i = atol((char *)eap->arg);
|
|
|
1934 else
|
|
|
1935 {
|
|
|
1936 i = buflist_findpat(eap->arg, p, FALSE, TRUE);
|
|
|
1937 if (i < 0)
|
|
|
1938 return; /* error message already given */
|
|
|
1939 }
|
|
|
1940 buf = buflist_findnr(i);
|
|
|
1941 if (buf == NULL)
|
|
|
1942 {
|
|
|
1943 EMSG2(_("E102: Can't find buffer \"%s\""), eap->arg);
|
|
|
1944 return;
|
|
|
1945 }
|
|
|
1946 idx_other = diff_buf_idx(buf);
|
|
|
1947 if (idx_other == DB_COUNT)
|
|
|
1948 {
|
|
|
1949 EMSG2(_("E103: Buffer \"%s\" is not in diff mode"), eap->arg);
|
|
|
1950 return;
|
|
|
1951 }
|
|
|
1952 }
|
|
|
1953
|
|
|
1954 diff_busy = TRUE;
|
|
|
1955
|
|
|
1956 /* When no range given include the line above or below the cursor. */
|
|
|
1957 if (eap->addr_count == 0)
|
|
|
1958 {
|
|
|
1959 /* Make it possible that ":diffget" on the last line gets line below
|
|
|
1960 * the cursor line when there is no difference above the cursor. */
|
|
|
1961 if (eap->cmdidx == CMD_diffget
|
|
|
1962 && eap->line1 == curbuf->b_ml.ml_line_count
|
|
|
1963 && diff_check(curwin, eap->line1) == 0
|
|
|
1964 && (eap->line1 == 1 || diff_check(curwin, eap->line1 - 1) == 0))
|
|
|
1965 ++eap->line2;
|
|
|
1966 else if (eap->line1 > 0)
|
|
|
1967 --eap->line1;
|
|
|
1968 }
|
|
|
1969
|
|
|
1970 if (eap->cmdidx == CMD_diffget)
|
|
|
1971 {
|
|
|
1972 idx_from = idx_other;
|
|
|
1973 idx_to = idx_cur;
|
|
|
1974 }
|
|
|
1975 else
|
|
|
1976 {
|
|
|
1977 idx_from = idx_cur;
|
|
|
1978 idx_to = idx_other;
|
|
|
1979 /* Need to make the other buffer the current buffer to be able to make
|
|
|
1980 * changes in it. */
|
|
|
1981 /* set curwin/curbuf to buf and save a few things */
|
|
|
1982 aucmd_prepbuf(&aco, diffbuf[idx_other]);
|
|
|
1983 }
|
|
|
1984
|
|
|
1985 dprev = NULL;
|
|
|
1986 for (dp = first_diff; dp != NULL; )
|
|
|
1987 {
|
|
|
1988 if (dp->df_lnum[idx_cur] > eap->line2 + off)
|
|
|
1989 break; /* past the range that was specified */
|
|
|
1990
|
|
|
1991 dfree = NULL;
|
|
|
1992 lnum = dp->df_lnum[idx_to];
|
|
|
1993 count = dp->df_count[idx_to];
|
|
|
1994 if (dp->df_lnum[idx_cur] + dp->df_count[idx_cur] > eap->line1 + off
|
|
|
1995 && u_save(lnum - 1, lnum + count) != FAIL)
|
|
|
1996 {
|
|
|
1997 /* Inside the specified range and saving for undo worked. */
|
|
|
1998 start_skip = 0;
|
|
|
1999 end_skip = 0;
|
|
|
2000 if (eap->addr_count > 0)
|
|
|
2001 {
|
|
|
2002 /* A range was specified: check if lines need to be skipped. */
|
|
|
2003 start_skip = eap->line1 + off - dp->df_lnum[idx_cur];
|
|
|
2004 if (start_skip > 0)
|
|
|
2005 {
|
|
|
2006 /* range starts below start of current diff block */
|
|
|
2007 if (start_skip > count)
|
|
|
2008 {
|
|
|
2009 lnum += count;
|
|
|
2010 count = 0;
|
|
|
2011 }
|
|
|
2012 else
|
|
|
2013 {
|
|
|
2014 count -= start_skip;
|
|
|
2015 lnum += start_skip;
|
|
|
2016 }
|
|
|
2017 }
|
|
|
2018 else
|
|
|
2019 start_skip = 0;
|
|
|
2020
|
|
|
2021 end_skip = dp->df_lnum[idx_cur] + dp->df_count[idx_cur] - 1
|
|
|
2022 - (eap->line2 + off);
|
|
|
2023 if (end_skip > 0)
|
|
|
2024 {
|
|
|
2025 /* range ends above end of current/from diff block */
|
|
|
2026 if (idx_cur == idx_from) /* :diffput */
|
|
|
2027 {
|
|
|
2028 i = dp->df_count[idx_cur] - start_skip - end_skip;
|
|
|
2029 if (count > i)
|
|
|
2030 count = i;
|
|
|
2031 }
|
|
|
2032 else /* :diffget */
|
|
|
2033 {
|
|
|
2034 count -= end_skip;
|
|
|
2035 end_skip = dp->df_count[idx_from] - start_skip - count;
|
|
|
2036 if (end_skip < 0)
|
|
|
2037 end_skip = 0;
|
|
|
2038 }
|
|
|
2039 }
|
|
|
2040 else
|
|
|
2041 end_skip = 0;
|
|
|
2042 }
|
|
|
2043
|
|
|
2044 added = 0;
|
|
|
2045 for (i = 0; i < count; ++i)
|
|
|
2046 {
|
|
|
2047 ml_delete(lnum, FALSE);
|
|
|
2048 --added;
|
|
|
2049 }
|
|
|
2050 for (i = 0; i < dp->df_count[idx_from] - start_skip - end_skip; ++i)
|
|
|
2051 {
|
|
|
2052 linenr_T nr;
|
|
|
2053
|
|
|
2054 nr = dp->df_lnum[idx_from] + start_skip + i;
|
|
|
2055 if (nr > diffbuf[idx_from]->b_ml.ml_line_count)
|
|
|
2056 break;
|
|
|
2057 p = vim_strsave(ml_get_buf(diffbuf[idx_from], nr, FALSE));
|
|
|
2058 if (p != NULL)
|
|
|
2059 {
|
|
|
2060 ml_append(lnum + i - 1, p, 0, FALSE);
|
|
|
2061 vim_free(p);
|
|
|
2062 ++added;
|
|
|
2063 }
|
|
|
2064 }
|
|
|
2065 new_count = dp->df_count[idx_to] + added;
|
|
|
2066 dp->df_count[idx_to] = new_count;
|
|
|
2067
|
|
|
2068 if (start_skip == 0 && end_skip == 0)
|
|
|
2069 {
|
|
|
2070 /* Check if there are any other buffers and if the diff is
|
|
|
2071 * equal in them. */
|
|
|
2072 for (i = 0; i < DB_COUNT; ++i)
|
|
|
2073 if (diffbuf[i] != NULL && i != idx_from && i != idx_to
|
|
|
2074 && !diff_equal_entry(dp, idx_from, i))
|
|
|
2075 break;
|
|
|
2076 if (i == DB_COUNT)
|
|
|
2077 {
|
|
|
2078 /* delete the diff entry, the buffers are now equal here */
|
|
|
2079 dfree = dp;
|
|
|
2080 dp = dp->df_next;
|
|
|
2081 if (dprev == NULL)
|
|
|
2082 first_diff = dp;
|
|
|
2083 else
|
|
|
2084 dprev->df_next = dp;
|
|
|
2085 }
|
|
|
2086 }
|
|
|
2087
|
|
|
2088 /* Adjust marks. This will change the following entries! */
|
|
|
2089 if (added != 0)
|
|
|
2090 {
|
|
|
2091 mark_adjust(lnum, lnum + count - 1, (long)MAXLNUM, (long)added);
|
|
|
2092 if (curwin->w_cursor.lnum >= lnum)
|
|
|
2093 {
|
|
|
2094 /* Adjust the cursor position if it's in/after the changed
|
|
|
2095 * lines. */
|
|
|
2096 if (curwin->w_cursor.lnum >= lnum + count)
|
|
|
2097 curwin->w_cursor.lnum += added;
|
|
|
2098 else if (added < 0)
|
|
|
2099 curwin->w_cursor.lnum = lnum;
|
|
|
2100 }
|
|
|
2101 }
|
|
|
2102 changed_lines(lnum, 0, lnum + count, (long)added);
|
|
|
2103
|
|
|
2104 if (dfree != NULL)
|
|
|
2105 {
|
|
|
2106 /* Diff is deleted, update folds in other windows. */
|
|
|
2107 #ifdef FEAT_FOLDING
|
|
|
2108 diff_fold_update(dfree, idx_to);
|
|
|
2109 #endif
|
|
|
2110 vim_free(dfree);
|
|
|
2111 }
|
|
|
2112 else
|
|
|
2113 /* mark_adjust() may have changed the count in a wrong way */
|
|
|
2114 dp->df_count[idx_to] = new_count;
|
|
|
2115
|
|
|
2116 /* When changing the current buffer, keep track of line numbers */
|
|
|
2117 if (idx_cur == idx_to)
|
|
|
2118 off += added;
|
|
|
2119 }
|
|
|
2120
|
|
|
2121 /* If before the range or not deleted, go to next diff. */
|
|
|
2122 if (dfree == NULL)
|
|
|
2123 {
|
|
|
2124 dprev = dp;
|
|
|
2125 dp = dp->df_next;
|
|
|
2126 }
|
|
|
2127 }
|
|
|
2128
|
|
|
2129 /* restore curwin/curbuf and a few other things */
|
|
|
2130 if (idx_other == idx_to)
|
|
|
2131 {
|
|
|
2132 /* Syncing undo only works for the current buffer, but we change
|
|
|
2133 * another buffer. Sync undo if the command was typed. This isn't
|
|
|
2134 * 100% right when ":diffput" is used in a function or mapping. */
|
|
|
2135 if (KeyTyped)
|
|
|
2136 u_sync();
|
|
|
2137 aucmd_restbuf(&aco);
|
|
|
2138 }
|
|
|
2139
|
|
|
2140 diff_busy = FALSE;
|
|
|
2141
|
|
|
2142 /* Check that the cursor is on a valid character and update it's position.
|
|
|
2143 * When there were filler lines the topline has become invalid. */
|
|
|
2144 check_cursor();
|
|
|
2145 changed_line_abv_curs();
|
|
|
2146
|
|
|
2147 /* Also need to redraw the other buffers. */
|
|
|
2148 diff_redraw(FALSE);
|
|
|
2149 }
|
|
|
2150
|
|
|
2151 #ifdef FEAT_FOLDING
|
|
|
2152 /*
|
|
|
2153 * Update folds for all diff buffers for entry "dp".
|
|
|
2154 * Skip buffer with index "skip_idx".
|
|
|
2155 * When there are no diffs, all folds are removed.
|
|
|
2156 */
|
|
|
2157 static void
|
|
|
2158 diff_fold_update(dp, skip_idx)
|
|
|
2159 diff_T *dp;
|
|
|
2160 int skip_idx;
|
|
|
2161 {
|
|
|
2162 int i;
|
|
|
2163 win_T *wp;
|
|
|
2164
|
|
|
2165 for (wp = firstwin; wp != NULL; wp = wp->w_next)
|
|
|
2166 for (i = 0; i < DB_COUNT; ++i)
|
|
|
2167 if (diffbuf[i] == wp->w_buffer && i != skip_idx)
|
|
|
2168 foldUpdate(wp, dp->df_lnum[i],
|
|
|
2169 dp->df_lnum[i] + dp->df_count[i]);
|
|
|
2170 }
|
|
|
2171 #endif
|
|
|
2172
|
|
|
2173 /*
|
|
|
2174 * Return TRUE if buffer "buf" is in diff-mode.
|
|
|
2175 */
|
|
|
2176 int
|
|
|
2177 diff_mode_buf(buf)
|
|
|
2178 buf_T *buf;
|
|
|
2179 {
|
|
|
2180 return diff_buf_idx(buf) != DB_COUNT;
|
|
|
2181 }
|
|
|
2182
|
|
|
2183 /*
|
|
|
2184 * Move "count" times in direction "dir" to the next diff block.
|
|
|
2185 * Return FAIL if there isn't such a diff block.
|
|
|
2186 */
|
|
|
2187 int
|
|
|
2188 diff_move_to(dir, count)
|
|
|
2189 int dir;
|
|
|
2190 long count;
|
|
|
2191 {
|
|
|
2192 int idx;
|
|
|
2193 linenr_T lnum = curwin->w_cursor.lnum;
|
|
|
2194 diff_T *dp;
|
|
|
2195
|
|
|
2196 idx = diff_buf_idx(curbuf);
|
|
|
2197 if (idx == DB_COUNT || first_diff == NULL)
|
|
|
2198 return FAIL;
|
|
|
2199
|
|
|
2200 if (diff_invalid)
|
|
|
2201 ex_diffupdate(NULL); /* update after a big change */
|
|
|
2202
|
|
|
2203 if (first_diff == NULL) /* no diffs today */
|
|
|
2204 return FAIL;
|
|
|
2205
|
|
|
2206 while (--count >= 0)
|
|
|
2207 {
|
|
|
2208 /* Check if already before first diff. */
|
|
|
2209 if (dir == BACKWARD && lnum <= first_diff->df_lnum[idx])
|
|
|
2210 break;
|
|
|
2211
|
|
|
2212 for (dp = first_diff; ; dp = dp->df_next)
|
|
|
2213 {
|
|
|
2214 if (dp == NULL)
|
|
|
2215 break;
|
|
|
2216 if ((dir == FORWARD && lnum < dp->df_lnum[idx])
|
|
|
2217 || (dir == BACKWARD
|
|
|
2218 && (dp->df_next == NULL
|
|
|
2219 || lnum <= dp->df_next->df_lnum[idx])))
|
|
|
2220 {
|
|
|
2221 lnum = dp->df_lnum[idx];
|
|
|
2222 break;
|
|
|
2223 }
|
|
|
2224 }
|
|
|
2225 }
|
|
|
2226
|
|
|
2227 /* don't end up past the end of the file */
|
|
|
2228 if (lnum > curbuf->b_ml.ml_line_count)
|
|
|
2229 lnum = curbuf->b_ml.ml_line_count;
|
|
|
2230
|
|
|
2231 /* When the cursor didn't move at all we fail. */
|
|
|
2232 if (lnum == curwin->w_cursor.lnum)
|
|
|
2233 return FAIL;
|
|
|
2234
|
|
|
2235 setpcmark();
|
|
|
2236 curwin->w_cursor.lnum = lnum;
|
|
|
2237 curwin->w_cursor.col = 0;
|
|
|
2238
|
|
|
2239 return OK;
|
|
|
2240 }
|
|
|
2241
|
|
|
2242 #if defined(FEAT_FOLDING) || defined(PROTO)
|
|
|
2243 /*
|
|
|
2244 * For line "lnum" in the current window find the equivalent lnum in window
|
|
|
2245 * "wp", compensating for inserted/deleted lines.
|
|
|
2246 */
|
|
|
2247 linenr_T
|
|
|
2248 diff_lnum_win(lnum, wp)
|
|
|
2249 linenr_T lnum;
|
|
|
2250 win_T *wp;
|
|
|
2251 {
|
|
|
2252 diff_T *dp;
|
|
|
2253 int idx;
|
|
|
2254 int i;
|
|
|
2255 linenr_T n;
|
|
|
2256
|
|
|
2257 idx = diff_buf_idx(curbuf);
|
|
|
2258 if (idx == DB_COUNT) /* safety check */
|
|
|
2259 return (linenr_T)0;
|
|
|
2260
|
|
|
2261 if (diff_invalid)
|
|
|
2262 ex_diffupdate(NULL); /* update after a big change */
|
|
|
2263
|
|
|
2264 /* search for a change that includes "lnum" in the list of diffblocks. */
|
|
|
2265 for (dp = first_diff; dp != NULL; dp = dp->df_next)
|
|
|
2266 if (lnum <= dp->df_lnum[idx] + dp->df_count[idx])
|
|
|
2267 break;
|
|
|
2268
|
|
|
2269 /* When after the last change, compute relative to the last line number. */
|
|
|
2270 if (dp == NULL)
|
|
|
2271 return wp->w_buffer->b_ml.ml_line_count
|
|
|
2272 - (curbuf->b_ml.ml_line_count - lnum);
|
|
|
2273
|
|
|
2274 /* Find index for "wp". */
|
|
|
2275 i = diff_buf_idx(wp->w_buffer);
|
|
|
2276 if (i == DB_COUNT) /* safety check */
|
|
|
2277 return (linenr_T)0;
|
|
|
2278
|
|
|
2279 n = lnum + (dp->df_lnum[i] - dp->df_lnum[idx]);
|
|
|
2280 if (n > dp->df_lnum[i] + dp->df_count[i])
|
|
|
2281 n = dp->df_lnum[i] + dp->df_count[i];
|
|
|
2282 return n;
|
|
|
2283 }
|
|
|
2284 #endif
|
|
|
2285
|
|
|
2286 #endif /* FEAT_DIFF */
|
