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1 | #!/bin/sh | |
2 | # git-mergetool--lib is a library for common merge tool functions | |
3 | diff_mode() { | |
4 | test "$TOOL_MODE" = diff | |
5 | } | |
6 | ||
7 | merge_mode() { | |
8 | test "$TOOL_MODE" = merge | |
9 | } | |
10 | ||
11 | translate_merge_tool_path () { | |
12 | case "$1" in | |
13 | vimdiff|vimdiff2) | |
14 | echo vim | |
15 | ;; | |
16 | gvimdiff|gvimdiff2) | |
17 | echo gvim | |
18 | ;; | |
19 | emerge) | |
20 | echo emacs | |
21 | ;; | |
22 | araxis) | |
23 | echo compare | |
24 | ;; | |
25 | *) | |
26 | echo "$1" | |
27 | ;; | |
28 | esac | |
29 | } | |
30 | ||
31 | check_unchanged () { | |
32 | if test "$MERGED" -nt "$BACKUP"; then | |
33 | status=0 | |
34 | else | |
35 | while true; do | |
36 | echo "$MERGED seems unchanged." | |
37 | printf "Was the merge successful? [y/n] " | |
38 | read answer | |
39 | case "$answer" in | |
40 | y*|Y*) status=0; break ;; | |
41 | n*|N*) status=1; break ;; | |
42 | esac | |
43 | done | |
44 | fi | |
45 | } | |
46 | ||
47 | valid_tool () { | |
48 | case "$1" in | |
49 | kdiff3 | tkdiff | xxdiff | meld | opendiff | \ | |
50 | vimdiff | gvimdiff | vimdiff2 | gvimdiff2 | \ | |
51 | emerge | ecmerge | diffuse | araxis | p4merge) | |
52 | ;; # happy | |
53 | tortoisemerge) | |
54 | if ! merge_mode; then | |
55 | return 1 | |
56 | fi | |
57 | ;; | |
58 | kompare) | |
59 | if ! diff_mode; then | |
60 | return 1 | |
61 | fi | |
62 | ;; | |
63 | *) | |
64 | if test -z "$(get_merge_tool_cmd "$1")"; then | |
65 | return 1 | |
66 | fi | |
67 | ;; | |
68 | esac | |
69 | } | |
70 | ||
71 | get_merge_tool_cmd () { | |
72 | # Prints the custom command for a merge tool | |
73 | if test -n "$1"; then | |
74 | merge_tool="$1" | |
75 | else | |
76 | merge_tool="$(get_merge_tool)" | |
77 | fi | |
78 | if diff_mode; then | |
79 | echo "$(git config difftool.$merge_tool.cmd || | |
80 | git config mergetool.$merge_tool.cmd)" | |
81 | else | |
82 | echo "$(git config mergetool.$merge_tool.cmd)" | |
83 | fi | |
84 | } | |
85 | ||
86 | run_merge_tool () { | |
87 | merge_tool_path="$(get_merge_tool_path "$1")" || exit | |
88 | base_present="$2" | |
89 | status=0 | |
90 | ||
91 | case "$1" in | |
92 | kdiff3) | |
93 | if merge_mode; then | |
94 | if $base_present; then | |
95 | ("$merge_tool_path" --auto \ | |
96 | --L1 "$MERGED (Base)" \ | |
97 | --L2 "$MERGED (Local)" \ | |
98 | --L3 "$MERGED (Remote)" \ | |
99 | -o "$MERGED" \ | |
100 | "$BASE" "$LOCAL" "$REMOTE" \ | |
101 | > /dev/null 2>&1) | |
102 | else | |
103 | ("$merge_tool_path" --auto \ | |
104 | --L1 "$MERGED (Local)" \ | |
105 | --L2 "$MERGED (Remote)" \ | |
106 | -o "$MERGED" \ | |
107 | "$LOCAL" "$REMOTE" \ | |
108 | > /dev/null 2>&1) | |
109 | fi | |
110 | status=$? | |
111 | else | |
112 | ("$merge_tool_path" --auto \ | |
113 | --L1 "$MERGED (A)" \ | |
114 | --L2 "$MERGED (B)" "$LOCAL" "$REMOTE" \ | |
115 | > /dev/null 2>&1) | |
116 | fi | |
117 | ;; | |
118 | kompare) | |
119 | "$merge_tool_path" "$LOCAL" "$REMOTE" | |
120 | ;; | |
121 | tkdiff) | |
122 | if merge_mode; then | |
123 | if $base_present; then | |
124 | "$merge_tool_path" -a "$BASE" \ | |
125 | -o "$MERGED" "$LOCAL" "$REMOTE" | |
126 | else | |
127 | "$merge_tool_path" \ | |
128 | -o "$MERGED" "$LOCAL" "$REMOTE" | |
129 | fi | |
130 | status=$? | |
131 | else | |
132 | "$merge_tool_path" "$LOCAL" "$REMOTE" | |
133 | fi | |
134 | ;; | |
135 | p4merge) | |
136 | if merge_mode; then | |
137 | touch "$BACKUP" | |
138 | if $base_present; then | |
139 | "$merge_tool_path" "$BASE" "$LOCAL" "$REMOTE" "$MERGED" | |
140 | else | |
141 | "$merge_tool_path" "$LOCAL" "$LOCAL" "$REMOTE" "$MERGED" | |
142 | fi | |
143 | check_unchanged | |
144 | else | |
145 | "$merge_tool_path" "$LOCAL" "$REMOTE" | |
146 | fi | |
147 | ;; | |
148 | meld) | |
149 | if merge_mode; then | |
150 | touch "$BACKUP" | |
151 | "$merge_tool_path" "$LOCAL" "$MERGED" "$REMOTE" | |
152 | check_unchanged | |
153 | else | |
154 | "$merge_tool_path" "$LOCAL" "$REMOTE" | |
155 | fi | |
156 | ;; | |
157 | diffuse) | |
158 | if merge_mode; then | |
159 | touch "$BACKUP" | |
160 | if $base_present; then | |
161 | "$merge_tool_path" \ | |
162 | "$LOCAL" "$MERGED" "$REMOTE" \ | |
163 | "$BASE" | cat | |
164 | else | |
165 | "$merge_tool_path" \ | |
166 | "$LOCAL" "$MERGED" "$REMOTE" | cat | |
167 | fi | |
168 | check_unchanged | |
169 | else | |
170 | "$merge_tool_path" "$LOCAL" "$REMOTE" | cat | |
171 | fi | |
172 | ;; | |
173 | vimdiff|gvimdiff) | |
174 | if merge_mode; then | |
175 | touch "$BACKUP" | |
176 | if $base_present; then | |
177 | "$merge_tool_path" -f -d -c "wincmd J" \ | |
178 | "$MERGED" "$LOCAL" "$BASE" "$REMOTE" | |
179 | else | |
180 | "$merge_tool_path" -f -d -c "wincmd l" \ | |
181 | "$LOCAL" "$MERGED" "$REMOTE" | |
182 | fi | |
183 | check_unchanged | |
184 | else | |
185 | "$merge_tool_path" -f -d -c "wincmd l" \ | |
186 | "$LOCAL" "$REMOTE" | |
187 | fi | |
188 | ;; | |
189 | vimdiff2|gvimdiff2) | |
190 | if merge_mode; then | |
191 | touch "$BACKUP" | |
192 | "$merge_tool_path" -f -d -c "wincmd l" \ | |
193 | "$LOCAL" "$MERGED" "$REMOTE" | |
194 | check_unchanged | |
195 | else | |
196 | "$merge_tool_path" -f -d -c "wincmd l" \ | |
197 | "$LOCAL" "$REMOTE" | |
198 | fi | |
199 | ;; | |
200 | xxdiff) | |
201 | if merge_mode; then | |
202 | touch "$BACKUP" | |
203 | if $base_present; then | |
204 | "$merge_tool_path" -X --show-merged-pane \ | |
205 | -R 'Accel.SaveAsMerged: "Ctrl-S"' \ | |
206 | -R 'Accel.Search: "Ctrl+F"' \ | |
207 | -R 'Accel.SearchForward: "Ctrl-G"' \ | |
208 | --merged-file "$MERGED" \ | |
209 | "$LOCAL" "$BASE" "$REMOTE" | |
210 | else | |
211 | "$merge_tool_path" -X $extra \ | |
212 | -R 'Accel.SaveAsMerged: "Ctrl-S"' \ | |
213 | -R 'Accel.Search: "Ctrl+F"' \ | |
214 | -R 'Accel.SearchForward: "Ctrl-G"' \ | |
215 | --merged-file "$MERGED" \ | |
216 | "$LOCAL" "$REMOTE" | |
217 | fi | |
218 | check_unchanged | |
219 | else | |
220 | "$merge_tool_path" \ | |
221 | -R 'Accel.Search: "Ctrl+F"' \ | |
222 | -R 'Accel.SearchForward: "Ctrl-G"' \ | |
223 | "$LOCAL" "$REMOTE" | |
224 | fi | |
225 | ;; | |
226 | opendiff) | |
227 | if merge_mode; then | |
228 | touch "$BACKUP" | |
229 | if $base_present; then | |
230 | "$merge_tool_path" "$LOCAL" "$REMOTE" \ | |
231 | -ancestor "$BASE" \ | |
232 | -merge "$MERGED" | cat | |
233 | else | |
234 | "$merge_tool_path" "$LOCAL" "$REMOTE" \ | |
235 | -merge "$MERGED" | cat | |
236 | fi | |
237 | check_unchanged | |
238 | else | |
239 | "$merge_tool_path" "$LOCAL" "$REMOTE" | cat | |
240 | fi | |
241 | ;; | |
242 | ecmerge) | |
243 | if merge_mode; then | |
244 | touch "$BACKUP" | |
245 | if $base_present; then | |
246 | "$merge_tool_path" "$BASE" "$LOCAL" "$REMOTE" \ | |
247 | --default --mode=merge3 --to="$MERGED" | |
248 | else | |
249 | "$merge_tool_path" "$LOCAL" "$REMOTE" \ | |
250 | --default --mode=merge2 --to="$MERGED" | |
251 | fi | |
252 | check_unchanged | |
253 | else | |
254 | "$merge_tool_path" --default --mode=diff2 \ | |
255 | "$LOCAL" "$REMOTE" | |
256 | fi | |
257 | ;; | |
258 | emerge) | |
259 | if merge_mode; then | |
260 | if $base_present; then | |
261 | "$merge_tool_path" \ | |
262 | -f emerge-files-with-ancestor-command \ | |
263 | "$LOCAL" "$REMOTE" "$BASE" \ | |
264 | "$(basename "$MERGED")" | |
265 | else | |
266 | "$merge_tool_path" \ | |
267 | -f emerge-files-command \ | |
268 | "$LOCAL" "$REMOTE" \ | |
269 | "$(basename "$MERGED")" | |
270 | fi | |
271 | status=$? | |
272 | else | |
273 | "$merge_tool_path" -f emerge-files-command \ | |
274 | "$LOCAL" "$REMOTE" | |
275 | fi | |
276 | ;; | |
277 | tortoisemerge) | |
278 | if $base_present; then | |
279 | touch "$BACKUP" | |
280 | "$merge_tool_path" \ | |
281 | -base:"$BASE" -mine:"$LOCAL" \ | |
282 | -theirs:"$REMOTE" -merged:"$MERGED" | |
283 | check_unchanged | |
284 | else | |
285 | echo "TortoiseMerge cannot be used without a base" 1>&2 | |
286 | status=1 | |
287 | fi | |
288 | ;; | |
289 | araxis) | |
290 | if merge_mode; then | |
291 | touch "$BACKUP" | |
292 | if $base_present; then | |
293 | "$merge_tool_path" -wait -merge -3 -a1 \ | |
294 | "$BASE" "$LOCAL" "$REMOTE" "$MERGED" \ | |
295 | >/dev/null 2>&1 | |
296 | else | |
297 | "$merge_tool_path" -wait -2 \ | |
298 | "$LOCAL" "$REMOTE" "$MERGED" \ | |
299 | >/dev/null 2>&1 | |
300 | fi | |
301 | check_unchanged | |
302 | else | |
303 | "$merge_tool_path" -wait -2 "$LOCAL" "$REMOTE" \ | |
304 | >/dev/null 2>&1 | |
305 | fi | |
306 | ;; | |
307 | *) | |
308 | merge_tool_cmd="$(get_merge_tool_cmd "$1")" | |
309 | if test -z "$merge_tool_cmd"; then | |
310 | if merge_mode; then | |
311 | status=1 | |
312 | fi | |
313 | break | |
314 | fi | |
315 | if merge_mode; then | |
316 | trust_exit_code="$(git config --bool \ | |
317 | mergetool."$1".trustExitCode || echo false)" | |
318 | if test "$trust_exit_code" = "false"; then | |
319 | touch "$BACKUP" | |
320 | ( eval $merge_tool_cmd ) | |
321 | check_unchanged | |
322 | else | |
323 | ( eval $merge_tool_cmd ) | |
324 | status=$? | |
325 | fi | |
326 | else | |
327 | ( eval $merge_tool_cmd ) | |
328 | fi | |
329 | ;; | |
330 | esac | |
331 | return $status | |
332 | } | |
333 | ||
334 | guess_merge_tool () { | |
335 | if merge_mode; then | |
336 | tools="tortoisemerge" | |
337 | else | |
338 | tools="kompare" | |
339 | fi | |
340 | if test -n "$DISPLAY"; then | |
341 | if test -n "$GNOME_DESKTOP_SESSION_ID" ; then | |
342 | tools="meld opendiff kdiff3 tkdiff xxdiff $tools" | |
343 | else | |
344 | tools="opendiff kdiff3 tkdiff xxdiff meld $tools" | |
345 | fi | |
346 | tools="$tools gvimdiff diffuse ecmerge p4merge araxis" | |
347 | fi | |
348 | case "${VISUAL:-$EDITOR}" in | |
349 | *vim*) | |
350 | tools="$tools vimdiff emerge" | |
351 | ;; | |
352 | *) | |
353 | tools="$tools emerge vimdiff" | |
354 | ;; | |
355 | esac | |
356 | echo >&2 "merge tool candidates: $tools" | |
357 | ||
358 | # Loop over each candidate and stop when a valid merge tool is found. | |
359 | for i in $tools | |
360 | do | |
361 | merge_tool_path="$(translate_merge_tool_path "$i")" | |
362 | if type "$merge_tool_path" > /dev/null 2>&1; then | |
363 | echo "$i" | |
364 | return 0 | |
365 | fi | |
366 | done | |
367 | ||
368 | echo >&2 "No known merge resolution program available." | |
369 | return 1 | |
370 | } | |
371 | ||
372 | get_configured_merge_tool () { | |
373 | # Diff mode first tries diff.tool and falls back to merge.tool. | |
374 | # Merge mode only checks merge.tool | |
375 | if diff_mode; then | |
376 | merge_tool=$(git config diff.tool || git config merge.tool) | |
377 | else | |
378 | merge_tool=$(git config merge.tool) | |
379 | fi | |
380 | if test -n "$merge_tool" && ! valid_tool "$merge_tool"; then | |
381 | echo >&2 "git config option $TOOL_MODE.tool set to unknown tool: $merge_tool" | |
382 | echo >&2 "Resetting to default..." | |
383 | return 1 | |
384 | fi | |
385 | echo "$merge_tool" | |
386 | } | |
387 | ||
388 | get_merge_tool_path () { | |
389 | # A merge tool has been set, so verify that it's valid. | |
390 | if test -n "$1"; then | |
391 | merge_tool="$1" | |
392 | else | |
393 | merge_tool="$(get_merge_tool)" | |
394 | fi | |
395 | if ! valid_tool "$merge_tool"; then | |
396 | echo >&2 "Unknown merge tool $merge_tool" | |
397 | exit 1 | |
398 | fi | |
399 | if diff_mode; then | |
400 | merge_tool_path=$(git config difftool."$merge_tool".path || | |
401 | git config mergetool."$merge_tool".path) | |
402 | else | |
403 | merge_tool_path=$(git config mergetool."$merge_tool".path) | |
404 | fi | |
405 | if test -z "$merge_tool_path"; then | |
406 | merge_tool_path="$(translate_merge_tool_path "$merge_tool")" | |
407 | fi | |
408 | if test -z "$(get_merge_tool_cmd "$merge_tool")" && | |
409 | ! type "$merge_tool_path" > /dev/null 2>&1; then | |
410 | echo >&2 "The $TOOL_MODE tool $merge_tool is not available as"\ | |
411 | "'$merge_tool_path'" | |
412 | exit 1 | |
413 | fi | |
414 | echo "$merge_tool_path" | |
415 | } | |
416 | ||
417 | get_merge_tool () { | |
418 | # Check if a merge tool has been configured | |
419 | merge_tool=$(get_configured_merge_tool) | |
420 | # Try to guess an appropriate merge tool if no tool has been set. | |
421 | if test -z "$merge_tool"; then | |
422 | merge_tool="$(guess_merge_tool)" || exit | |
423 | fi | |
424 | echo "$merge_tool" | |
425 | } |