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Commit | Line | Data |
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be3cfa85 JH |
1 | /* |
2 | * Copyright (C) 2005 Junio C Hamano | |
3 | */ | |
86436c28 JH |
4 | #ifndef DIFF_H |
5 | #define DIFF_H | |
6 | ||
64acde94 | 7 | #include "pathspec.h" |
15af58c1 | 8 | #include "oidset.h" |
a64215b6 | 9 | #include "strbuf.h" |
50f9a858 | 10 | |
13c4d7eb HW |
11 | /** |
12 | * The diff API is for programs that compare two sets of files (e.g. two trees, | |
13 | * one tree and the index) and present the found difference in various ways. | |
14 | * The calling program is responsible for feeding the API pairs of files, one | |
15 | * from the "old" set and the corresponding one from "new" set, that are | |
16 | * different. | |
17 | * The library called through this API is called diffcore, and is responsible | |
18 | * for two things. | |
19 | * | |
20 | * - finding total rewrites (`-B`), renames (`-M`) and copies (`-C`), and | |
21 | * changes that touch a string (`-S`), as specified by the caller. | |
22 | * | |
23 | * - outputting the differences in various formats, as specified by the caller. | |
24 | * | |
25 | * Calling sequence | |
26 | * ---------------- | |
27 | * | |
28 | * - Prepare `struct diff_options` to record the set of diff options, and then | |
29 | * call `repo_diff_setup()` to initialize this structure. This sets up the | |
30 | * vanilla default. | |
31 | * | |
32 | * - Fill in the options structure to specify desired output format, rename | |
33 | * detection, etc. `diff_opt_parse()` can be used to parse options given | |
34 | * from the command line in a way consistent with existing git-diff family | |
35 | * of programs. | |
36 | * | |
37 | * - Call `diff_setup_done()`; this inspects the options set up so far for | |
38 | * internal consistency and make necessary tweaking to it (e.g. if textual | |
39 | * patch output was asked, recursive behaviour is turned on); the callback | |
40 | * set_default in diff_options can be used to tweak this more. | |
41 | * | |
42 | * - As you find different pairs of files, call `diff_change()` to feed | |
43 | * modified files, `diff_addremove()` to feed created or deleted files, or | |
44 | * `diff_unmerge()` to feed a file whose state is 'unmerged' to the API. | |
45 | * These are thin wrappers to a lower-level `diff_queue()` function that is | |
46 | * flexible enough to record any of these kinds of changes. | |
47 | * | |
48 | * - Once you finish feeding the pairs of files, call `diffcore_std()`. | |
49 | * This will tell the diffcore library to go ahead and do its work. | |
50 | * | |
e900d494 ÆAB |
51 | * - Calling `diff_flush()` will produce the output, it will call |
52 | * `diff_free()` to free any resources, e.g. those allocated in | |
53 | * `diff_opt_parse()`. | |
54 | * | |
55 | * - Set `.no_free = 1` before calling `diff_flush()` to defer the | |
56 | * freeing of allocated memory in diff_options. This is useful when | |
57 | * `diff_flush()` is being called in a loop, rather than as a | |
58 | * one-off. When setting `.no_free = 1` you must ensure that | |
59 | * `diff_free()` is called at the end, either by flipping the flag | |
60 | * before the last `diff_flush()` call, or by flipping it before | |
61 | * calling `diff_free()` yourself. | |
13c4d7eb HW |
62 | */ |
63 | ||
4a1b13a3 NTND |
64 | struct combine_diff_path; |
65 | struct commit; | |
66 | struct diff_filespec; | |
ac1b3d12 | 67 | struct diff_options; |
04245581 | 68 | struct diff_queue_struct; |
910650d2 | 69 | struct oid_array; |
4a288478 | 70 | struct option; |
b78ea5fc | 71 | struct repository; |
4a1b13a3 | 72 | struct rev_info; |
4a1b13a3 | 73 | struct userdiff_driver; |
72441af7 KS |
74 | |
75 | typedef int (*pathchange_fn_t)(struct diff_options *options, | |
76 | struct combine_diff_path *path); | |
ac1b3d12 LT |
77 | |
78 | typedef void (*change_fn_t)(struct diff_options *options, | |
79 | unsigned old_mode, unsigned new_mode, | |
94a0097a BW |
80 | const struct object_id *old_oid, |
81 | const struct object_id *new_oid, | |
82 | int old_oid_valid, int new_oid_valid, | |
e3d42c47 JL |
83 | const char *fullpath, |
84 | unsigned old_dirty_submodule, unsigned new_dirty_submodule); | |
ac1b3d12 LT |
85 | |
86 | typedef void (*add_remove_fn_t)(struct diff_options *options, | |
87 | int addremove, unsigned mode, | |
c26022ea BW |
88 | const struct object_id *oid, |
89 | int oid_valid, | |
e3d42c47 | 90 | const char *fullpath, unsigned dirty_submodule); |
ac1b3d12 | 91 | |
04245581 JK |
92 | typedef void (*diff_format_fn_t)(struct diff_queue_struct *q, |
93 | struct diff_options *options, void *data); | |
94 | ||
a3c158d4 BY |
95 | typedef struct strbuf *(*diff_prefix_fn_t)(struct diff_options *opt, void *data); |
96 | ||
c6744349 TH |
97 | #define DIFF_FORMAT_RAW 0x0001 |
98 | #define DIFF_FORMAT_DIFFSTAT 0x0002 | |
74e2abe5 JH |
99 | #define DIFF_FORMAT_NUMSTAT 0x0004 |
100 | #define DIFF_FORMAT_SUMMARY 0x0008 | |
101 | #define DIFF_FORMAT_PATCH 0x0010 | |
ebd124c6 | 102 | #define DIFF_FORMAT_SHORTSTAT 0x0020 |
7df7c019 | 103 | #define DIFF_FORMAT_DIRSTAT 0x0040 |
c6744349 TH |
104 | |
105 | /* These override all above */ | |
74e2abe5 JH |
106 | #define DIFF_FORMAT_NAME 0x0100 |
107 | #define DIFF_FORMAT_NAME_STATUS 0x0200 | |
108 | #define DIFF_FORMAT_CHECKDIFF 0x0400 | |
c6744349 TH |
109 | |
110 | /* Same as output_format = 0 but we know that -s flag was given | |
111 | * and we should not give default value to output_format. | |
112 | */ | |
74e2abe5 | 113 | #define DIFF_FORMAT_NO_OUTPUT 0x0800 |
c6744349 | 114 | |
74e2abe5 | 115 | #define DIFF_FORMAT_CALLBACK 0x1000 |
04245581 | 116 | |
02f2f56b BW |
117 | #define DIFF_FLAGS_INIT { 0 } |
118 | struct diff_flags { | |
13c4d7eb HW |
119 | |
120 | /** | |
121 | * Tells if tree traversal done by tree-diff should recursively descend | |
122 | * into a tree object pair that are different in preimage and postimage set. | |
123 | */ | |
2b393ef3 NTND |
124 | unsigned recursive; |
125 | unsigned tree_in_recursive; | |
13c4d7eb HW |
126 | |
127 | /* Affects the way how a file that is seemingly binary is treated. */ | |
2b393ef3 NTND |
128 | unsigned binary; |
129 | unsigned text; | |
13c4d7eb HW |
130 | |
131 | /** | |
132 | * Tells the patch output format not to use abbreviated object names on the | |
133 | * "index" lines. | |
134 | */ | |
2b393ef3 | 135 | unsigned full_index; |
13c4d7eb HW |
136 | |
137 | /* Affects if diff-files shows removed files. */ | |
2b393ef3 | 138 | unsigned silent_on_remove; |
13c4d7eb HW |
139 | |
140 | /** | |
141 | * Tells the diffcore library that the caller is feeding unchanged | |
142 | * filepairs to allow copies from unmodified files be detected. | |
143 | */ | |
2b393ef3 | 144 | unsigned find_copies_harder; |
13c4d7eb | 145 | |
2b393ef3 NTND |
146 | unsigned follow_renames; |
147 | unsigned rename_empty; | |
13c4d7eb HW |
148 | |
149 | /* Internal; used for optimization to see if there is any change. */ | |
2b393ef3 | 150 | unsigned has_changes; |
13c4d7eb | 151 | |
2b393ef3 | 152 | unsigned quick; |
13c4d7eb HW |
153 | |
154 | /** | |
155 | * Tells diff-files that the input is not tracked files but files in random | |
156 | * locations on the filesystem. | |
157 | */ | |
2b393ef3 | 158 | unsigned no_index; |
13c4d7eb HW |
159 | |
160 | /** | |
161 | * Tells output routine that it is Ok to call user specified patch output | |
162 | * routine. Plumbing disables this to ensure stable output. | |
163 | */ | |
2b393ef3 | 164 | unsigned allow_external; |
13c4d7eb HW |
165 | |
166 | /** | |
167 | * For communication between the calling program and the options parser; | |
168 | * tell the calling program to signal the presence of difference using | |
169 | * program exit code. | |
170 | */ | |
2b393ef3 | 171 | unsigned exit_with_status; |
13c4d7eb HW |
172 | |
173 | /** | |
174 | * Tells the library that the calling program is feeding the filepairs | |
175 | * reversed; `one` is two, and `two` is one. | |
176 | */ | |
2b393ef3 | 177 | unsigned reverse_diff; |
13c4d7eb | 178 | |
2b393ef3 NTND |
179 | unsigned check_failed; |
180 | unsigned relative_name; | |
181 | unsigned ignore_submodules; | |
182 | unsigned dirstat_cumulative; | |
183 | unsigned dirstat_by_file; | |
184 | unsigned allow_textconv; | |
185 | unsigned textconv_set_via_cmdline; | |
186 | unsigned diff_from_contents; | |
187 | unsigned dirty_submodules; | |
188 | unsigned ignore_untracked_in_submodules; | |
8ef93124 | 189 | unsigned ignore_submodule_set; |
2b393ef3 NTND |
190 | unsigned ignore_dirty_submodules; |
191 | unsigned override_submodule_config; | |
192 | unsigned dirstat_by_line; | |
193 | unsigned funccontext; | |
194 | unsigned default_follow_renames; | |
195 | unsigned stat_with_summary; | |
196 | unsigned suppress_diff_headers; | |
197 | unsigned dual_color_diffed_diffs; | |
430be36e | 198 | unsigned suppress_hunk_header_line_count; |
02f2f56b BW |
199 | }; |
200 | ||
201 | static inline void diff_flags_or(struct diff_flags *a, | |
202 | const struct diff_flags *b) | |
203 | { | |
204 | char *tmp_a = (char *)a; | |
205 | const char *tmp_b = (const char *)b; | |
206 | int i; | |
207 | ||
208 | for (i = 0; i < sizeof(struct diff_flags); i++) | |
209 | tmp_a[i] |= tmp_b[i]; | |
210 | } | |
211 | ||
628d5c2b KC |
212 | #define DIFF_XDL_TST(opts, flag) ((opts)->xdl_opts & XDF_##flag) |
213 | #define DIFF_XDL_SET(opts, flag) ((opts)->xdl_opts |= XDF_##flag) | |
214 | #define DIFF_XDL_CLR(opts, flag) ((opts)->xdl_opts &= ~XDF_##flag) | |
8f67f8ae | 215 | |
307ab20b JH |
216 | #define DIFF_WITH_ALG(opts, flag) (((opts)->xdl_opts & ~XDF_DIFF_ALGORITHM_MASK) | XDF_##flag) |
217 | ||
882749a0 TR |
218 | enum diff_words_type { |
219 | DIFF_WORDS_NONE = 0, | |
220 | DIFF_WORDS_PORCELAIN, | |
221 | DIFF_WORDS_PLAIN, | |
222 | DIFF_WORDS_COLOR | |
223 | }; | |
224 | ||
61cfbc05 JK |
225 | enum diff_submodule_format { |
226 | DIFF_SUBMODULE_SHORT = 0, | |
fd47ae6a JK |
227 | DIFF_SUBMODULE_LOG, |
228 | DIFF_SUBMODULE_INLINE_DIFF | |
61cfbc05 JK |
229 | }; |
230 | ||
13c4d7eb HW |
231 | /** |
232 | * the set of options the calling program wants to affect the operation of | |
233 | * diffcore library with. | |
234 | */ | |
6b5ee137 | 235 | struct diff_options { |
6b5ee137 | 236 | const char *orderfile; |
13c4d7eb | 237 | |
1eb4136a JH |
238 | /* |
239 | * "--rotate-to=<file>" would start showing at <file> and when | |
240 | * the output reaches the end, wrap around by default. | |
241 | * Setting skip_instead_of_rotate to true stops the output at the | |
242 | * end, effectively discarding the earlier part of the output | |
243 | * before <file>'s diff (this is used to implement the | |
244 | * "--skip-to=<file>" option). | |
245 | * | |
246 | * When rotate_to_strict is set, it is an error if there is no | |
247 | * <file> in the diff. Otherwise, the output starts at the | |
248 | * path that is the same as, or first path that sorts after, | |
249 | * <file>. Because it is unreasonable to require the exact | |
250 | * match for "git log -p --rotate-to=<file>" (i.e. not all | |
251 | * commit would touch that single <file>), "git log" sets it | |
252 | * to false. "git diff" sets it to true to detect an error | |
253 | * in the command line option. | |
254 | */ | |
255 | const char *rotate_to; | |
256 | int skip_instead_of_rotate; | |
257 | int rotate_to_strict; | |
258 | ||
13c4d7eb HW |
259 | /** |
260 | * A constant string (can and typically does contain newlines to look for | |
261 | * a block of text, not just a single line) to filter out the filepairs | |
262 | * that do not change the number of strings contained in its preimage and | |
263 | * postimage of the diff_queue. | |
264 | */ | |
6b5ee137 | 265 | const char *pickaxe; |
a47fcbe6 | 266 | unsigned pickaxe_opts; |
13c4d7eb | 267 | |
296d4a94 MK |
268 | /* -I<regex> */ |
269 | regex_t **ignore_regex; | |
270 | size_t ignore_regex_nr, ignore_regex_alloc; | |
271 | ||
2f3f8b21 | 272 | const char *single_follow; |
eab9a40b | 273 | const char *a_prefix, *b_prefix; |
660e113c JK |
274 | const char *line_prefix; |
275 | size_t line_prefix_length; | |
13c4d7eb HW |
276 | |
277 | /** | |
278 | * collection of boolean options that affects the operation, but some do | |
279 | * not have anything to do with the diffcore library. | |
280 | */ | |
02f2f56b | 281 | struct diff_flags flags; |
1ecc1cbd JH |
282 | |
283 | /* diff-filter bits */ | |
75408ca9 | 284 | unsigned int filter, filter_not; |
1ecc1cbd | 285 | |
f1c96261 | 286 | int use_color; |
13c4d7eb HW |
287 | |
288 | /* Number of context lines to generate in patch output. */ | |
ee1e5412 | 289 | int context; |
13c4d7eb | 290 | |
6d0e674a | 291 | int interhunkcontext; |
13c4d7eb HW |
292 | |
293 | /* Affects the way detection logic for complete rewrites, renames and | |
294 | * copies. | |
295 | */ | |
6b5ee137 JH |
296 | int break_opt; |
297 | int detect_rename; | |
13c4d7eb | 298 | |
467ddc14 | 299 | int irreversible_delete; |
fb13227e | 300 | int skip_stat_unmatch; |
6b5ee137 | 301 | int line_termination; |
13c4d7eb HW |
302 | |
303 | /* The output format used when `diff_flush()` is run. */ | |
6b5ee137 | 304 | int output_format; |
13c4d7eb | 305 | |
13c4d7eb HW |
306 | /* Affects the way detection logic for complete rewrites, renames and |
307 | * copies. | |
308 | */ | |
6b5ee137 | 309 | int rename_score; |
8082d8d3 | 310 | int rename_limit; |
13c4d7eb | 311 | |
bf0ab10f | 312 | int needed_rename_limit; |
f31027c9 | 313 | int degraded_cc_to_c; |
3ac942d4 | 314 | int show_rename_progress; |
712d2c7d | 315 | int dirstat_permille; |
6b5ee137 | 316 | int setup; |
13c4d7eb HW |
317 | |
318 | /* Number of hexdigits to abbreviate raw format output to. */ | |
47dd0d59 | 319 | int abbrev; |
13c4d7eb | 320 | |
e3696980 DS |
321 | /* If non-zero, then stop computing after this many changes. */ |
322 | int max_changes; | |
e3696980 | 323 | |
425a28e0 | 324 | int ita_invisible_in_index; |
b8767f79 | 325 | /* white-space error highlighting */ |
091f8e28 SB |
326 | #define WSEH_NEW (1<<12) |
327 | #define WSEH_CONTEXT (1<<13) | |
328 | #define WSEH_OLD (1<<14) | |
b8767f79 | 329 | unsigned ws_error_highlight; |
cd676a51 JH |
330 | const char *prefix; |
331 | int prefix_length; | |
698ce6f8 | 332 | const char *stat_sep; |
7f125ff9 | 333 | int xdl_opts; |
a4cf900e | 334 | int ignore_driver_algorithm; |
ac1b3d12 | 335 | |
2477ab2e JT |
336 | /* see Documentation/diff-options.txt */ |
337 | char **anchors; | |
338 | size_t anchors_nr, anchors_alloc; | |
339 | ||
a2540023 JH |
340 | int stat_width; |
341 | int stat_name_width; | |
969fe57b | 342 | int stat_graph_width; |
808e1db2 | 343 | int stat_count; |
2b6a5417 | 344 | const char *word_regex; |
882749a0 | 345 | enum diff_words_type word_diff; |
61cfbc05 | 346 | enum diff_submodule_format submodule_format; |
a2540023 | 347 | |
15af58c1 SB |
348 | struct oidset *objfind; |
349 | ||
34a5e1a2 JS |
350 | /* this is set by diffcore for DIFF_FORMAT_PATCH */ |
351 | int found_changes; | |
352 | ||
44c48a90 JH |
353 | /* to support internal diff recursion by --follow hack*/ |
354 | int found_follow; | |
355 | ||
13c4d7eb | 356 | /* Callback which allows tweaking the options in diff_setup_done(). */ |
6c374008 JH |
357 | void (*set_default)(struct diff_options *); |
358 | ||
c0c77734 DB |
359 | FILE *file; |
360 | int close_file; | |
361 | ||
7648b79e SB |
362 | #define OUTPUT_INDICATOR_NEW 0 |
363 | #define OUTPUT_INDICATOR_OLD 1 | |
364 | #define OUTPUT_INDICATOR_CONTEXT 2 | |
365 | char output_indicators[3]; | |
366 | ||
66f13625 | 367 | struct pathspec pathspec; |
72441af7 | 368 | pathchange_fn_t pathchange; |
ac1b3d12 LT |
369 | change_fn_t change; |
370 | add_remove_fn_t add_remove; | |
a937b37e | 371 | void *change_fn_data; |
04245581 JK |
372 | diff_format_fn_t format_callback; |
373 | void *format_callback_data; | |
a3c158d4 BY |
374 | diff_prefix_fn_t output_prefix; |
375 | void *output_prefix_data; | |
ee7fb0b1 ZK |
376 | |
377 | int diff_path_counter; | |
e6e045f8 SB |
378 | |
379 | struct emitted_diff_symbols *emitted_symbols; | |
2e2d5ac1 SB |
380 | enum { |
381 | COLOR_MOVED_NO = 0, | |
176841f0 | 382 | COLOR_MOVED_PLAIN = 1, |
51da15eb SB |
383 | COLOR_MOVED_BLOCKS = 2, |
384 | COLOR_MOVED_ZEBRA = 3, | |
385 | COLOR_MOVED_ZEBRA_DIM = 4, | |
2e2d5ac1 SB |
386 | } color_moved; |
387 | #define COLOR_MOVED_DEFAULT COLOR_MOVED_ZEBRA | |
f0b8fb6e | 388 | #define COLOR_MOVED_MIN_ALNUM_COUNT 20 |
ca1f4ae4 SB |
389 | |
390 | /* XDF_WHITESPACE_FLAGS regarding block detection are set at 2, 3, 4 */ | |
391 | #define COLOR_MOVED_WS_ALLOW_INDENTATION_CHANGE (1<<5) | |
d173e799 SB |
392 | #define COLOR_MOVED_WS_ERROR (1<<0) |
393 | unsigned color_moved_ws_handling; | |
b78ea5fc NTND |
394 | |
395 | struct repository *repo; | |
95433eee | 396 | struct strmap *additional_path_headers; |
e900d494 ÆAB |
397 | |
398 | int no_free; | |
6b5ee137 JH |
399 | }; |
400 | ||
cdb5330a NTND |
401 | unsigned diff_filter_bit(char status); |
402 | ||
f3597138 SB |
403 | void diff_emit_submodule_del(struct diff_options *o, const char *line); |
404 | void diff_emit_submodule_add(struct diff_options *o, const char *line); | |
405 | void diff_emit_submodule_untracked(struct diff_options *o, const char *path); | |
406 | void diff_emit_submodule_modified(struct diff_options *o, const char *path); | |
407 | void diff_emit_submodule_header(struct diff_options *o, const char *header); | |
408 | void diff_emit_submodule_error(struct diff_options *o, const char *err); | |
409 | void diff_emit_submodule_pipethrough(struct diff_options *o, | |
410 | const char *line, int len); | |
411 | ||
e4cb659e DF |
412 | struct diffstat_t { |
413 | int nr; | |
414 | int alloc; | |
415 | struct diffstat_file { | |
416 | char *from_name; | |
417 | char *name; | |
418 | char *print_name; | |
419 | const char *comments; | |
420 | unsigned is_unmerged:1; | |
421 | unsigned is_binary:1; | |
422 | unsigned is_renamed:1; | |
423 | unsigned is_interesting:1; | |
424 | uintmax_t added, deleted; | |
425 | } **files; | |
426 | }; | |
427 | ||
ce436973 JK |
428 | enum color_diff { |
429 | DIFF_RESET = 0, | |
8dbf3eb6 | 430 | DIFF_CONTEXT = 1, |
ce436973 JK |
431 | DIFF_METAINFO = 2, |
432 | DIFF_FRAGINFO = 3, | |
433 | DIFF_FILE_OLD = 4, | |
434 | DIFF_FILE_NEW = 5, | |
435 | DIFF_COMMIT = 6, | |
448c3ef1 | 436 | DIFF_WHITESPACE = 7, |
2e2d5ac1 SB |
437 | DIFF_FUNCINFO = 8, |
438 | DIFF_FILE_OLD_MOVED = 9, | |
439 | DIFF_FILE_OLD_MOVED_ALT = 10, | |
86b452e2 SB |
440 | DIFF_FILE_OLD_MOVED_DIM = 11, |
441 | DIFF_FILE_OLD_MOVED_ALT_DIM = 12, | |
442 | DIFF_FILE_NEW_MOVED = 13, | |
443 | DIFF_FILE_NEW_MOVED_ALT = 14, | |
444 | DIFF_FILE_NEW_MOVED_DIM = 15, | |
a7be92ac JS |
445 | DIFF_FILE_NEW_MOVED_ALT_DIM = 16, |
446 | DIFF_CONTEXT_DIM = 17, | |
447 | DIFF_FILE_OLD_DIM = 18, | |
448 | DIFF_FILE_NEW_DIM = 19, | |
449 | DIFF_CONTEXT_BOLD = 20, | |
450 | DIFF_FILE_OLD_BOLD = 21, | |
451 | DIFF_FILE_NEW_BOLD = 22, | |
ce436973 | 452 | }; |
13c4d7eb | 453 | |
ce436973 | 454 | const char *diff_get_color(int diff_use_color, enum color_diff ix); |
8f67f8ae | 455 | #define diff_get_color_opt(o, ix) \ |
f1c96261 | 456 | diff_get_color((o)->use_color, ix) |
8f67f8ae | 457 | |
ce436973 | 458 | |
f1922234 JK |
459 | const char *diff_line_prefix(struct diff_options *); |
460 | ||
461 | ||
698ce6f8 JS |
462 | extern const char mime_boundary_leader[]; |
463 | ||
f758a7f8 | 464 | struct combine_diff_path *diff_tree_paths( |
fda94b41 BW |
465 | struct combine_diff_path *p, const struct object_id *oid, |
466 | const struct object_id **parents_oid, int nparent, | |
72441af7 | 467 | struct strbuf *base, struct diff_options *opt); |
0ee3cb88 SG |
468 | void diff_tree_oid(const struct object_id *old_oid, |
469 | const struct object_id *new_oid, | |
470 | const char *base, struct diff_options *opt); | |
471 | void diff_root_tree_oid(const struct object_id *new_oid, const char *base, | |
472 | struct diff_options *opt); | |
ac1b3d12 | 473 | |
ea726d02 JH |
474 | struct combine_diff_path { |
475 | struct combine_diff_path *next; | |
ea726d02 | 476 | char *path; |
2454c962 | 477 | unsigned int mode; |
1ff57c13 | 478 | struct object_id oid; |
2454c962 | 479 | struct combine_diff_parent { |
d416df88 | 480 | char status; |
2454c962 | 481 | unsigned int mode; |
1ff57c13 | 482 | struct object_id oid; |
d76ce4f7 | 483 | struct strbuf path; |
2454c962 | 484 | } parent[FLEX_ARRAY]; |
ea726d02 | 485 | }; |
2454c962 | 486 | #define combine_diff_path_size(n, l) \ |
5b442c4f JK |
487 | st_add4(sizeof(struct combine_diff_path), (l), 1, \ |
488 | st_mult(sizeof(struct combine_diff_parent), (n))) | |
ea726d02 | 489 | |
f758a7f8 | 490 | void show_combined_diff(struct combine_diff_path *elem, int num_parent, |
d01141de | 491 | struct rev_info *); |
ea726d02 | 492 | |
d01141de | 493 | void diff_tree_combined(const struct object_id *oid, const struct oid_array *parents, struct rev_info *rev); |
0fe7c1de | 494 | |
d01141de | 495 | void diff_tree_combined_merge(const struct commit *commit, struct rev_info *rev); |
af3feefa | 496 | |
a5a818ee | 497 | void diff_set_mnemonic_prefix(struct diff_options *options, const char *a, const char *b); |
6799aadf JK |
498 | void diff_set_noprefix(struct diff_options *options); |
499 | void diff_set_default_prefix(struct diff_options *options); | |
a5a818ee | 500 | |
f758a7f8 | 501 | int diff_can_quit_early(struct diff_options *); |
28b9264d | 502 | |
f758a7f8 NTND |
503 | void diff_addremove(struct diff_options *, |
504 | int addremove, | |
505 | unsigned mode, | |
506 | const struct object_id *oid, | |
507 | int oid_valid, | |
508 | const char *fullpath, unsigned dirty_submodule); | |
77eb2720 | 509 | |
f758a7f8 NTND |
510 | void diff_change(struct diff_options *, |
511 | unsigned mode1, unsigned mode2, | |
512 | const struct object_id *old_oid, | |
513 | const struct object_id *new_oid, | |
514 | int old_oid_valid, int new_oid_valid, | |
515 | const char *fullpath, | |
516 | unsigned dirty_submodule1, unsigned dirty_submodule2); | |
77eb2720 | 517 | |
f758a7f8 | 518 | struct diff_filepair *diff_unmerge(struct diff_options *, const char *path); |
77eb2720 | 519 | |
e4cb659e DF |
520 | void compute_diffstat(struct diff_options *options, struct diffstat_t *diffstat, |
521 | struct diff_queue_struct *q); | |
522 | void free_diffstat_info(struct diffstat_t *diffstat); | |
523 | ||
19feebc8 | 524 | #define DIFF_SETUP_REVERSE 1 |
f0c6b2a2 | 525 | #define DIFF_SETUP_USE_SIZE_CACHE 4 |
ce240675 | 526 | |
dea007fb | 527 | /* |
b0d12fc9 | 528 | * Poor man's alternative to parse-option, to allow both stuck form |
dea007fb MM |
529 | * (--option=value) and separate form (--option value). |
530 | */ | |
f758a7f8 NTND |
531 | int parse_long_opt(const char *opt, const char **argv, |
532 | const char **optarg); | |
533 | ||
534 | int git_diff_basic_config(const char *var, const char *value, void *cb); | |
535 | int git_diff_heuristic_config(const char *var, const char *value, void *cb); | |
536 | void init_diff_ui_defaults(void); | |
537 | int git_diff_ui_config(const char *var, const char *value, void *cb); | |
e6757652 | 538 | void repo_diff_setup(struct repository *, struct diff_options *); |
c5630c48 | 539 | struct option *add_diff_options(const struct option *, struct diff_options *); |
f758a7f8 NTND |
540 | int diff_opt_parse(struct diff_options *, const char **, int, const char *); |
541 | void diff_setup_done(struct diff_options *); | |
542 | int git_config_rename(const char *var, const char *value); | |
86436c28 | 543 | |
6b14d7fa JH |
544 | #define DIFF_DETECT_RENAME 1 |
545 | #define DIFF_DETECT_COPY 2 | |
546 | ||
367cec1c | 547 | #define DIFF_PICKAXE_ALL 1 |
d01d8c67 | 548 | #define DIFF_PICKAXE_REGEX 2 |
f345b0a0 | 549 | |
f506b8e8 JH |
550 | #define DIFF_PICKAXE_KIND_S 4 /* traditional plumbing counter */ |
551 | #define DIFF_PICKAXE_KIND_G 8 /* grep in the patch */ | |
15af58c1 | 552 | #define DIFF_PICKAXE_KIND_OBJFIND 16 /* specific object IDs */ |
f506b8e8 | 553 | |
15af58c1 SB |
554 | #define DIFF_PICKAXE_KINDS_MASK (DIFF_PICKAXE_KIND_S | \ |
555 | DIFF_PICKAXE_KIND_G | \ | |
556 | DIFF_PICKAXE_KIND_OBJFIND) | |
188e9e28 ÆAB |
557 | #define DIFF_PICKAXE_KINDS_G_REGEX_MASK (DIFF_PICKAXE_KIND_G | \ |
558 | DIFF_PICKAXE_REGEX) | |
d26ec880 ÆAB |
559 | #define DIFF_PICKAXE_KINDS_ALL_OBJFIND_MASK (DIFF_PICKAXE_ALL | \ |
560 | DIFF_PICKAXE_KIND_OBJFIND) | |
cf63051a | 561 | |
c1ddc461 | 562 | #define DIFF_PICKAXE_IGNORE_CASE 32 |
f506b8e8 | 563 | |
f758a7f8 | 564 | void diffcore_std(struct diff_options *); |
784c0dae | 565 | void diffcore_fix_diff_index(void); |
f2ce9fde | 566 | |
dda2d79a JH |
567 | #define COMMON_DIFF_OPTIONS_HELP \ |
568 | "\ncommon diff options:\n" \ | |
8082d8d3 JH |
569 | " -z output diff-raw with lines terminated with NUL.\n" \ |
570 | " -p output patch format.\n" \ | |
571 | " -u synonym for -p.\n" \ | |
5c91da25 PB |
572 | " --patch-with-raw\n" \ |
573 | " output both a patch and the diff-raw format.\n" \ | |
d75f7952 | 574 | " --stat show diffstat instead of patch.\n" \ |
74e2abe5 | 575 | " --numstat show numeric diffstat instead of patch.\n" \ |
29353273 JS |
576 | " --patch-with-stat\n" \ |
577 | " output a patch and prepend its diffstat.\n" \ | |
8082d8d3 | 578 | " --name-only show only names of changed files.\n" \ |
946f5f7c | 579 | " --name-status show names and status of changed files.\n" \ |
47dd0d59 | 580 | " --full-index show full object name on index lines.\n" \ |
913419fc | 581 | " --abbrev=<n> abbreviate object names in diff-tree header and diff-raw.\n" \ |
8082d8d3 JH |
582 | " -R swap input file pairs.\n" \ |
583 | " -B detect complete rewrites.\n" \ | |
584 | " -M detect renames.\n" \ | |
585 | " -C detect copies.\n" \ | |
dda2d79a | 586 | " --find-copies-harder\n" \ |
8082d8d3 JH |
587 | " try unchanged files as candidate for copy detection.\n" \ |
588 | " -l<n> limit rename attempts up to <n> paths.\n" \ | |
589 | " -O<file> reorder diffs according to the <file>.\n" \ | |
590 | " -S<string> find filepair whose only one side contains the string.\n" \ | |
dda2d79a | 591 | " --pickaxe-all\n" \ |
ca49920f SF |
592 | " show all files diff when -S is used and hit is found.\n" \ |
593 | " -a --text treat all files as text.\n" | |
dda2d79a | 594 | |
95433eee | 595 | int diff_queue_is_empty(struct diff_options *o); |
f758a7f8 | 596 | void diff_flush(struct diff_options*); |
e900d494 | 597 | void diff_free(struct diff_options*); |
f758a7f8 | 598 | void diff_warn_rename_limit(const char *varname, int needed, int degraded_cc); |
86436c28 | 599 | |
e7baa4f4 | 600 | /* diff-raw status letters */ |
ca8c9156 | 601 | #define DIFF_STATUS_ADDED 'A' |
e7baa4f4 JH |
602 | #define DIFF_STATUS_COPIED 'C' |
603 | #define DIFF_STATUS_DELETED 'D' | |
604 | #define DIFF_STATUS_MODIFIED 'M' | |
605 | #define DIFF_STATUS_RENAMED 'R' | |
606 | #define DIFF_STATUS_TYPE_CHANGED 'T' | |
607 | #define DIFF_STATUS_UNKNOWN 'X' | |
608 | #define DIFF_STATUS_UNMERGED 'U' | |
609 | ||
610 | /* these are not diff-raw status letters proper, but used by | |
611 | * diffcore-filter insn to specify additional restrictions. | |
612 | */ | |
0b34379a | 613 | #define DIFF_STATUS_FILTER_AON '*' |
e7baa4f4 JH |
614 | #define DIFF_STATUS_FILTER_BROKEN 'B' |
615 | ||
d5e3b01e | 616 | /* |
c7c33f50 | 617 | * This is different from repo_find_unique_abbrev() in that |
d5e3b01e JK |
618 | * it stuffs the result with dots for alignment. |
619 | */ | |
f758a7f8 | 620 | const char *diff_aligned_abbrev(const struct object_id *sha1, int); |
47dd0d59 | 621 | |
177a8302 DL |
622 | void diff_get_merge_base(const struct rev_info *revs, struct object_id *mb); |
623 | ||
4bd5b7da JH |
624 | /* do not report anything on removed paths */ |
625 | #define DIFF_SILENT_ON_REMOVED 01 | |
fb63d7f8 JH |
626 | /* report racily-clean paths as modified */ |
627 | #define DIFF_RACY_IS_MODIFIED 02 | |
f758a7f8 | 628 | int run_diff_files(struct rev_info *revs, unsigned int option); |
4c3fe82e DL |
629 | |
630 | #define DIFF_INDEX_CACHED 01 | |
0f5a1d44 | 631 | #define DIFF_INDEX_MERGE_BASE 02 |
4c3fe82e | 632 | int run_diff_index(struct rev_info *revs, unsigned int option); |
e09ad6e1 | 633 | |
f758a7f8 | 634 | int do_diff_cache(const struct object_id *, struct diff_options *); |
51276c18 | 635 | int diff_flush_patch_id(struct diff_options *, struct object_id *, int); |
36261e42 | 636 | void flush_one_hunk(struct object_id *result, git_hash_ctx *ctx); |
fcb3d0ad | 637 | |
f758a7f8 | 638 | int diff_result_code(struct diff_options *, int); |
da31b358 | 639 | |
dcd6a8c0 | 640 | int diff_no_index(struct rev_info *, |
16bb3d71 | 641 | int implicit_no_index, int, const char **); |
0569e9b8 | 642 | |
ffc00a48 NTND |
643 | int index_differs_from(struct repository *r, const char *def, |
644 | const struct diff_flags *flags, | |
f758a7f8 | 645 | int ita_invisible_in_index); |
75f3ff2e | 646 | |
72a72390 ES |
647 | /* |
648 | * Emit an interdiff of two object ID's to 'diff_options.file' optionally | |
649 | * indented by 'indent' spaces. | |
650 | */ | |
651 | void show_interdiff(const struct object_id *, const struct object_id *, | |
652 | int indent, struct diff_options *); | |
cdffbdc2 | 653 | |
a64e6a44 JK |
654 | /* |
655 | * Fill the contents of the filespec "df", respecting any textconv defined by | |
656 | * its userdiff driver. The "driver" parameter must come from a | |
657 | * previous call to get_textconv(), and therefore should either be NULL or have | |
658 | * textconv enabled. | |
659 | * | |
660 | * Note that the memory ownership of the resulting buffer depends on whether | |
661 | * the driver field is NULL. If it is, then the memory belongs to the filespec | |
662 | * struct. If it is non-NULL, then "outbuf" points to a newly allocated buffer | |
663 | * that should be freed by the caller. | |
664 | */ | |
6afaf807 NTND |
665 | size_t fill_textconv(struct repository *r, |
666 | struct userdiff_driver *driver, | |
f758a7f8 NTND |
667 | struct diff_filespec *df, |
668 | char **outbuf); | |
a788d7d5 | 669 | |
a64e6a44 JK |
670 | /* |
671 | * Look up the userdiff driver for the given filespec, and return it if | |
672 | * and only if it has textconv enabled (otherwise return NULL). The result | |
673 | * can be passed to fill_textconv(). | |
674 | */ | |
bd7ad45b | 675 | struct userdiff_driver *get_textconv(struct repository *r, |
acd00ea0 | 676 | struct diff_filespec *one); |
a788d7d5 | 677 | |
3a35cb2e JS |
678 | /* |
679 | * Prepare diff_filespec and convert it using diff textconv API | |
680 | * if the textconv driver exists. | |
681 | * Return 1 if the conversion succeeds, 0 otherwise. | |
682 | */ | |
6afaf807 NTND |
683 | int textconv_object(struct repository *repo, |
684 | const char *path, | |
685 | unsigned mode, | |
686 | const struct object_id *oid, int oid_valid, | |
687 | char **buf, unsigned long *buf_size); | |
3a35cb2e | 688 | |
f758a7f8 | 689 | int parse_rename_score(const char **cp_p); |
10ae7526 | 690 | |
f758a7f8 | 691 | long parse_algorithm_value(const char *value); |
07924d4d | 692 | |
f758a7f8 NTND |
693 | void print_stat_summary(FILE *fp, int files, |
694 | int insertions, int deletions); | |
695 | void setup_diff_pager(struct diff_options *); | |
7f814632 | 696 | |
86436c28 | 697 | #endif /* DIFF_H */ |