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1 | /* | |
2 | * Copyright (C) 2005 Junio C Hamano | |
3 | */ | |
4 | #ifndef DIFF_H | |
5 | #define DIFF_H | |
6 | ||
7 | #include "hash-ll.h" | |
8 | #include "pathspec.h" | |
9 | #include "strbuf.h" | |
10 | ||
11 | struct oidset; | |
12 | ||
13 | /** | |
14 | * The diff API is for programs that compare two sets of files (e.g. two trees, | |
15 | * one tree and the index) and present the found difference in various ways. | |
16 | * The calling program is responsible for feeding the API pairs of files, one | |
17 | * from the "old" set and the corresponding one from "new" set, that are | |
18 | * different. | |
19 | * The library called through this API is called diffcore, and is responsible | |
20 | * for two things. | |
21 | * | |
22 | * - finding total rewrites (`-B`), renames (`-M`) and copies (`-C`), and | |
23 | * changes that touch a string (`-S`), as specified by the caller. | |
24 | * | |
25 | * - outputting the differences in various formats, as specified by the caller. | |
26 | * | |
27 | * Calling sequence | |
28 | * ---------------- | |
29 | * | |
30 | * - Prepare `struct diff_options` to record the set of diff options, and then | |
31 | * call `repo_diff_setup()` to initialize this structure. This sets up the | |
32 | * vanilla default. | |
33 | * | |
34 | * - Fill in the options structure to specify desired output format, rename | |
35 | * detection, etc. `diff_opt_parse()` can be used to parse options given | |
36 | * from the command line in a way consistent with existing git-diff family | |
37 | * of programs. | |
38 | * | |
39 | * - Call `diff_setup_done()`; this inspects the options set up so far for | |
40 | * internal consistency and make necessary tweaking to it (e.g. if textual | |
41 | * patch output was asked, recursive behaviour is turned on); the callback | |
42 | * set_default in diff_options can be used to tweak this more. | |
43 | * | |
44 | * - As you find different pairs of files, call `diff_change()` to feed | |
45 | * modified files, `diff_addremove()` to feed created or deleted files, or | |
46 | * `diff_unmerge()` to feed a file whose state is 'unmerged' to the API. | |
47 | * These are thin wrappers to a lower-level `diff_queue()` function that is | |
48 | * flexible enough to record any of these kinds of changes. | |
49 | * | |
50 | * - Once you finish feeding the pairs of files, call `diffcore_std()`. | |
51 | * This will tell the diffcore library to go ahead and do its work. | |
52 | * | |
53 | * - Calling `diff_flush()` will produce the output, it will call | |
54 | * `diff_free()` to free any resources, e.g. those allocated in | |
55 | * `diff_opt_parse()`. | |
56 | * | |
57 | * - Set `.no_free = 1` before calling `diff_flush()` to defer the | |
58 | * freeing of allocated memory in diff_options. This is useful when | |
59 | * `diff_flush()` is being called in a loop, rather than as a | |
60 | * one-off. When setting `.no_free = 1` you must ensure that | |
61 | * `diff_free()` is called at the end, either by flipping the flag | |
62 | * before the last `diff_flush()` call, or by flipping it before | |
63 | * calling `diff_free()` yourself. | |
64 | */ | |
65 | ||
66 | struct combine_diff_path; | |
67 | struct commit; | |
68 | struct diff_filespec; | |
69 | struct diff_options; | |
70 | struct diff_queue_struct; | |
71 | struct oid_array; | |
72 | struct option; | |
73 | struct repository; | |
74 | struct rev_info; | |
75 | struct userdiff_driver; | |
76 | ||
77 | typedef int (*pathchange_fn_t)(struct diff_options *options, | |
78 | struct combine_diff_path *path); | |
79 | ||
80 | typedef void (*change_fn_t)(struct diff_options *options, | |
81 | unsigned old_mode, unsigned new_mode, | |
82 | const struct object_id *old_oid, | |
83 | const struct object_id *new_oid, | |
84 | int old_oid_valid, int new_oid_valid, | |
85 | const char *fullpath, | |
86 | unsigned old_dirty_submodule, unsigned new_dirty_submodule); | |
87 | ||
88 | typedef void (*add_remove_fn_t)(struct diff_options *options, | |
89 | int addremove, unsigned mode, | |
90 | const struct object_id *oid, | |
91 | int oid_valid, | |
92 | const char *fullpath, unsigned dirty_submodule); | |
93 | ||
94 | typedef void (*diff_format_fn_t)(struct diff_queue_struct *q, | |
95 | struct diff_options *options, void *data); | |
96 | ||
97 | typedef struct strbuf *(*diff_prefix_fn_t)(struct diff_options *opt, void *data); | |
98 | ||
99 | #define DIFF_FORMAT_RAW 0x0001 | |
100 | #define DIFF_FORMAT_DIFFSTAT 0x0002 | |
101 | #define DIFF_FORMAT_NUMSTAT 0x0004 | |
102 | #define DIFF_FORMAT_SUMMARY 0x0008 | |
103 | #define DIFF_FORMAT_PATCH 0x0010 | |
104 | #define DIFF_FORMAT_SHORTSTAT 0x0020 | |
105 | #define DIFF_FORMAT_DIRSTAT 0x0040 | |
106 | ||
107 | /* These override all above */ | |
108 | #define DIFF_FORMAT_NAME 0x0100 | |
109 | #define DIFF_FORMAT_NAME_STATUS 0x0200 | |
110 | #define DIFF_FORMAT_CHECKDIFF 0x0400 | |
111 | ||
112 | /* Same as output_format = 0 but we know that -s flag was given | |
113 | * and we should not give default value to output_format. | |
114 | */ | |
115 | #define DIFF_FORMAT_NO_OUTPUT 0x0800 | |
116 | ||
117 | #define DIFF_FORMAT_CALLBACK 0x1000 | |
118 | ||
119 | #define DIFF_FLAGS_INIT { 0 } | |
120 | struct diff_flags { | |
121 | ||
122 | /** | |
123 | * Tells if tree traversal done by tree-diff should recursively descend | |
124 | * into a tree object pair that are different in preimage and postimage set. | |
125 | */ | |
126 | unsigned recursive; | |
127 | unsigned tree_in_recursive; | |
128 | ||
129 | /* Affects the way how a file that is seemingly binary is treated. */ | |
130 | unsigned binary; | |
131 | unsigned text; | |
132 | ||
133 | /** | |
134 | * Tells the patch output format not to use abbreviated object names on the | |
135 | * "index" lines. | |
136 | */ | |
137 | unsigned full_index; | |
138 | ||
139 | /* Affects if diff-files shows removed files. */ | |
140 | unsigned silent_on_remove; | |
141 | ||
142 | /** | |
143 | * Tells the diffcore library that the caller is feeding unchanged | |
144 | * filepairs to allow copies from unmodified files be detected. | |
145 | */ | |
146 | unsigned find_copies_harder; | |
147 | ||
148 | unsigned follow_renames; | |
149 | unsigned rename_empty; | |
150 | ||
151 | /* Internal; used for optimization to see if there is any change. */ | |
152 | unsigned has_changes; | |
153 | ||
154 | unsigned quick; | |
155 | ||
156 | /** | |
157 | * Tells diff-files that the input is not tracked files but files in random | |
158 | * locations on the filesystem. | |
159 | */ | |
160 | unsigned no_index; | |
161 | ||
162 | /** | |
163 | * Tells output routine that it is Ok to call user specified patch output | |
164 | * routine. Plumbing disables this to ensure stable output. | |
165 | */ | |
166 | unsigned allow_external; | |
167 | ||
168 | /** | |
169 | * For communication between the calling program and the options parser; | |
170 | * tell the calling program to signal the presence of difference using | |
171 | * program exit code. | |
172 | */ | |
173 | unsigned exit_with_status; | |
174 | ||
175 | /** | |
176 | * Tells the library that the calling program is feeding the filepairs | |
177 | * reversed; `one` is two, and `two` is one. | |
178 | */ | |
179 | unsigned reverse_diff; | |
180 | ||
181 | unsigned check_failed; | |
182 | unsigned relative_name; | |
183 | unsigned ignore_submodules; | |
184 | unsigned dirstat_cumulative; | |
185 | unsigned dirstat_by_file; | |
186 | unsigned allow_textconv; | |
187 | unsigned textconv_set_via_cmdline; | |
188 | unsigned diff_from_contents; | |
189 | unsigned dirty_submodules; | |
190 | unsigned ignore_untracked_in_submodules; | |
191 | unsigned ignore_submodule_set; | |
192 | unsigned ignore_dirty_submodules; | |
193 | unsigned override_submodule_config; | |
194 | unsigned dirstat_by_line; | |
195 | unsigned funccontext; | |
196 | unsigned default_follow_renames; | |
197 | unsigned stat_with_summary; | |
198 | unsigned suppress_diff_headers; | |
199 | unsigned dual_color_diffed_diffs; | |
200 | unsigned suppress_hunk_header_line_count; | |
201 | }; | |
202 | ||
203 | static inline void diff_flags_or(struct diff_flags *a, | |
204 | const struct diff_flags *b) | |
205 | { | |
206 | char *tmp_a = (char *)a; | |
207 | const char *tmp_b = (const char *)b; | |
208 | int i; | |
209 | ||
210 | for (i = 0; i < sizeof(struct diff_flags); i++) | |
211 | tmp_a[i] |= tmp_b[i]; | |
212 | } | |
213 | ||
214 | #define DIFF_XDL_TST(opts, flag) ((opts)->xdl_opts & XDF_##flag) | |
215 | #define DIFF_XDL_SET(opts, flag) ((opts)->xdl_opts |= XDF_##flag) | |
216 | #define DIFF_XDL_CLR(opts, flag) ((opts)->xdl_opts &= ~XDF_##flag) | |
217 | ||
218 | #define DIFF_WITH_ALG(opts, flag) (((opts)->xdl_opts & ~XDF_DIFF_ALGORITHM_MASK) | XDF_##flag) | |
219 | ||
220 | enum diff_words_type { | |
221 | DIFF_WORDS_NONE = 0, | |
222 | DIFF_WORDS_PORCELAIN, | |
223 | DIFF_WORDS_PLAIN, | |
224 | DIFF_WORDS_COLOR | |
225 | }; | |
226 | ||
227 | enum diff_submodule_format { | |
228 | DIFF_SUBMODULE_SHORT = 0, | |
229 | DIFF_SUBMODULE_LOG, | |
230 | DIFF_SUBMODULE_INLINE_DIFF | |
231 | }; | |
232 | ||
233 | /** | |
234 | * the set of options the calling program wants to affect the operation of | |
235 | * diffcore library with. | |
236 | */ | |
237 | struct diff_options { | |
238 | const char *orderfile; | |
239 | ||
240 | /* | |
241 | * "--rotate-to=<file>" would start showing at <file> and when | |
242 | * the output reaches the end, wrap around by default. | |
243 | * Setting skip_instead_of_rotate to true stops the output at the | |
244 | * end, effectively discarding the earlier part of the output | |
245 | * before <file>'s diff (this is used to implement the | |
246 | * "--skip-to=<file>" option). | |
247 | * | |
248 | * When rotate_to_strict is set, it is an error if there is no | |
249 | * <file> in the diff. Otherwise, the output starts at the | |
250 | * path that is the same as, or first path that sorts after, | |
251 | * <file>. Because it is unreasonable to require the exact | |
252 | * match for "git log -p --rotate-to=<file>" (i.e. not all | |
253 | * commit would touch that single <file>), "git log" sets it | |
254 | * to false. "git diff" sets it to true to detect an error | |
255 | * in the command line option. | |
256 | */ | |
257 | const char *rotate_to; | |
258 | int skip_instead_of_rotate; | |
259 | int rotate_to_strict; | |
260 | ||
261 | /** | |
262 | * A constant string (can and typically does contain newlines to look for | |
263 | * a block of text, not just a single line) to filter out the filepairs | |
264 | * that do not change the number of strings contained in its preimage and | |
265 | * postimage of the diff_queue. | |
266 | */ | |
267 | const char *pickaxe; | |
268 | unsigned pickaxe_opts; | |
269 | ||
270 | /* -I<regex> */ | |
271 | regex_t **ignore_regex; | |
272 | size_t ignore_regex_nr, ignore_regex_alloc; | |
273 | ||
274 | const char *single_follow; | |
275 | const char *a_prefix, *b_prefix; | |
276 | const char *line_prefix; | |
277 | size_t line_prefix_length; | |
278 | ||
279 | /** | |
280 | * collection of boolean options that affects the operation, but some do | |
281 | * not have anything to do with the diffcore library. | |
282 | */ | |
283 | struct diff_flags flags; | |
284 | ||
285 | /* diff-filter bits */ | |
286 | unsigned int filter, filter_not; | |
287 | ||
288 | int use_color; | |
289 | ||
290 | /* Number of context lines to generate in patch output. */ | |
291 | int context; | |
292 | ||
293 | int interhunkcontext; | |
294 | ||
295 | /* Affects the way detection logic for complete rewrites, renames and | |
296 | * copies. | |
297 | */ | |
298 | int break_opt; | |
299 | int detect_rename; | |
300 | ||
301 | int irreversible_delete; | |
302 | int skip_stat_unmatch; | |
303 | int line_termination; | |
304 | ||
305 | /* The output format used when `diff_flush()` is run. */ | |
306 | int output_format; | |
307 | ||
308 | /* Affects the way detection logic for complete rewrites, renames and | |
309 | * copies. | |
310 | */ | |
311 | int rename_score; | |
312 | int rename_limit; | |
313 | ||
314 | int needed_rename_limit; | |
315 | int degraded_cc_to_c; | |
316 | int show_rename_progress; | |
317 | int dirstat_permille; | |
318 | int setup; | |
319 | ||
320 | /* Number of hexdigits to abbreviate raw format output to. */ | |
321 | int abbrev; | |
322 | ||
323 | /* If non-zero, then stop computing after this many changes. */ | |
324 | int max_changes; | |
325 | ||
326 | int ita_invisible_in_index; | |
327 | /* white-space error highlighting */ | |
328 | #define WSEH_NEW (1<<12) | |
329 | #define WSEH_CONTEXT (1<<13) | |
330 | #define WSEH_OLD (1<<14) | |
331 | unsigned ws_error_highlight; | |
332 | const char *prefix; | |
333 | int prefix_length; | |
334 | const char *stat_sep; | |
335 | int xdl_opts; | |
336 | int ignore_driver_algorithm; | |
337 | ||
338 | /* see Documentation/diff-options.txt */ | |
339 | char **anchors; | |
340 | size_t anchors_nr, anchors_alloc; | |
341 | ||
342 | int stat_width; | |
343 | int stat_name_width; | |
344 | int stat_graph_width; | |
345 | int stat_count; | |
346 | const char *word_regex; | |
347 | enum diff_words_type word_diff; | |
348 | enum diff_submodule_format submodule_format; | |
349 | ||
350 | struct oidset *objfind; | |
351 | ||
352 | /* this is set by diffcore for DIFF_FORMAT_PATCH */ | |
353 | int found_changes; | |
354 | ||
355 | /* to support internal diff recursion by --follow hack*/ | |
356 | int found_follow; | |
357 | ||
358 | /* Callback which allows tweaking the options in diff_setup_done(). */ | |
359 | void (*set_default)(struct diff_options *); | |
360 | ||
361 | FILE *file; | |
362 | int close_file; | |
363 | ||
364 | #define OUTPUT_INDICATOR_NEW 0 | |
365 | #define OUTPUT_INDICATOR_OLD 1 | |
366 | #define OUTPUT_INDICATOR_CONTEXT 2 | |
367 | char output_indicators[3]; | |
368 | ||
369 | struct pathspec pathspec; | |
370 | pathchange_fn_t pathchange; | |
371 | change_fn_t change; | |
372 | add_remove_fn_t add_remove; | |
373 | void *change_fn_data; | |
374 | diff_format_fn_t format_callback; | |
375 | void *format_callback_data; | |
376 | diff_prefix_fn_t output_prefix; | |
377 | void *output_prefix_data; | |
378 | ||
379 | int diff_path_counter; | |
380 | ||
381 | struct emitted_diff_symbols *emitted_symbols; | |
382 | enum { | |
383 | COLOR_MOVED_NO = 0, | |
384 | COLOR_MOVED_PLAIN = 1, | |
385 | COLOR_MOVED_BLOCKS = 2, | |
386 | COLOR_MOVED_ZEBRA = 3, | |
387 | COLOR_MOVED_ZEBRA_DIM = 4, | |
388 | } color_moved; | |
389 | #define COLOR_MOVED_DEFAULT COLOR_MOVED_ZEBRA | |
390 | #define COLOR_MOVED_MIN_ALNUM_COUNT 20 | |
391 | ||
392 | /* XDF_WHITESPACE_FLAGS regarding block detection are set at 2, 3, 4 */ | |
393 | #define COLOR_MOVED_WS_ALLOW_INDENTATION_CHANGE (1<<5) | |
394 | #define COLOR_MOVED_WS_ERROR (1<<0) | |
395 | unsigned color_moved_ws_handling; | |
396 | ||
397 | struct repository *repo; | |
398 | struct strmap *additional_path_headers; | |
399 | ||
400 | int no_free; | |
401 | }; | |
402 | ||
403 | unsigned diff_filter_bit(char status); | |
404 | ||
405 | void diff_emit_submodule_del(struct diff_options *o, const char *line); | |
406 | void diff_emit_submodule_add(struct diff_options *o, const char *line); | |
407 | void diff_emit_submodule_untracked(struct diff_options *o, const char *path); | |
408 | void diff_emit_submodule_modified(struct diff_options *o, const char *path); | |
409 | void diff_emit_submodule_header(struct diff_options *o, const char *header); | |
410 | void diff_emit_submodule_error(struct diff_options *o, const char *err); | |
411 | void diff_emit_submodule_pipethrough(struct diff_options *o, | |
412 | const char *line, int len); | |
413 | ||
414 | struct diffstat_t { | |
415 | int nr; | |
416 | int alloc; | |
417 | struct diffstat_file { | |
418 | char *from_name; | |
419 | char *name; | |
420 | char *print_name; | |
421 | const char *comments; | |
422 | unsigned is_unmerged:1; | |
423 | unsigned is_binary:1; | |
424 | unsigned is_renamed:1; | |
425 | unsigned is_interesting:1; | |
426 | uintmax_t added, deleted; | |
427 | } **files; | |
428 | }; | |
429 | ||
430 | enum color_diff { | |
431 | DIFF_RESET = 0, | |
432 | DIFF_CONTEXT = 1, | |
433 | DIFF_METAINFO = 2, | |
434 | DIFF_FRAGINFO = 3, | |
435 | DIFF_FILE_OLD = 4, | |
436 | DIFF_FILE_NEW = 5, | |
437 | DIFF_COMMIT = 6, | |
438 | DIFF_WHITESPACE = 7, | |
439 | DIFF_FUNCINFO = 8, | |
440 | DIFF_FILE_OLD_MOVED = 9, | |
441 | DIFF_FILE_OLD_MOVED_ALT = 10, | |
442 | DIFF_FILE_OLD_MOVED_DIM = 11, | |
443 | DIFF_FILE_OLD_MOVED_ALT_DIM = 12, | |
444 | DIFF_FILE_NEW_MOVED = 13, | |
445 | DIFF_FILE_NEW_MOVED_ALT = 14, | |
446 | DIFF_FILE_NEW_MOVED_DIM = 15, | |
447 | DIFF_FILE_NEW_MOVED_ALT_DIM = 16, | |
448 | DIFF_CONTEXT_DIM = 17, | |
449 | DIFF_FILE_OLD_DIM = 18, | |
450 | DIFF_FILE_NEW_DIM = 19, | |
451 | DIFF_CONTEXT_BOLD = 20, | |
452 | DIFF_FILE_OLD_BOLD = 21, | |
453 | DIFF_FILE_NEW_BOLD = 22, | |
454 | }; | |
455 | ||
456 | const char *diff_get_color(int diff_use_color, enum color_diff ix); | |
457 | #define diff_get_color_opt(o, ix) \ | |
458 | diff_get_color((o)->use_color, ix) | |
459 | ||
460 | ||
461 | const char *diff_line_prefix(struct diff_options *); | |
462 | ||
463 | ||
464 | extern const char mime_boundary_leader[]; | |
465 | ||
466 | struct combine_diff_path *diff_tree_paths( | |
467 | struct combine_diff_path *p, const struct object_id *oid, | |
468 | const struct object_id **parents_oid, int nparent, | |
469 | struct strbuf *base, struct diff_options *opt); | |
470 | void diff_tree_oid(const struct object_id *old_oid, | |
471 | const struct object_id *new_oid, | |
472 | const char *base, struct diff_options *opt); | |
473 | void diff_root_tree_oid(const struct object_id *new_oid, const char *base, | |
474 | struct diff_options *opt); | |
475 | ||
476 | struct combine_diff_path { | |
477 | struct combine_diff_path *next; | |
478 | char *path; | |
479 | unsigned int mode; | |
480 | struct object_id oid; | |
481 | struct combine_diff_parent { | |
482 | char status; | |
483 | unsigned int mode; | |
484 | struct object_id oid; | |
485 | struct strbuf path; | |
486 | } parent[FLEX_ARRAY]; | |
487 | }; | |
488 | #define combine_diff_path_size(n, l) \ | |
489 | st_add4(sizeof(struct combine_diff_path), (l), 1, \ | |
490 | st_mult(sizeof(struct combine_diff_parent), (n))) | |
491 | ||
492 | void show_combined_diff(struct combine_diff_path *elem, int num_parent, | |
493 | struct rev_info *); | |
494 | ||
495 | void diff_tree_combined(const struct object_id *oid, const struct oid_array *parents, struct rev_info *rev); | |
496 | ||
497 | void diff_tree_combined_merge(const struct commit *commit, struct rev_info *rev); | |
498 | ||
499 | void diff_set_mnemonic_prefix(struct diff_options *options, const char *a, const char *b); | |
500 | void diff_set_noprefix(struct diff_options *options); | |
501 | void diff_set_default_prefix(struct diff_options *options); | |
502 | ||
503 | int diff_can_quit_early(struct diff_options *); | |
504 | ||
505 | void diff_addremove(struct diff_options *, | |
506 | int addremove, | |
507 | unsigned mode, | |
508 | const struct object_id *oid, | |
509 | int oid_valid, | |
510 | const char *fullpath, unsigned dirty_submodule); | |
511 | ||
512 | void diff_change(struct diff_options *, | |
513 | unsigned mode1, unsigned mode2, | |
514 | const struct object_id *old_oid, | |
515 | const struct object_id *new_oid, | |
516 | int old_oid_valid, int new_oid_valid, | |
517 | const char *fullpath, | |
518 | unsigned dirty_submodule1, unsigned dirty_submodule2); | |
519 | ||
520 | struct diff_filepair *diff_unmerge(struct diff_options *, const char *path); | |
521 | ||
522 | void compute_diffstat(struct diff_options *options, struct diffstat_t *diffstat, | |
523 | struct diff_queue_struct *q); | |
524 | void free_diffstat_info(struct diffstat_t *diffstat); | |
525 | ||
526 | #define DIFF_SETUP_REVERSE 1 | |
527 | #define DIFF_SETUP_USE_SIZE_CACHE 4 | |
528 | ||
529 | /* | |
530 | * Poor man's alternative to parse-option, to allow both stuck form | |
531 | * (--option=value) and separate form (--option value). | |
532 | */ | |
533 | int parse_long_opt(const char *opt, const char **argv, | |
534 | const char **optarg); | |
535 | ||
536 | struct config_context; | |
537 | int git_diff_basic_config(const char *var, const char *value, | |
538 | const struct config_context *ctx, void *cb); | |
539 | int git_diff_heuristic_config(const char *var, const char *value, void *cb); | |
540 | void init_diff_ui_defaults(void); | |
541 | int git_diff_ui_config(const char *var, const char *value, | |
542 | const struct config_context *ctx, void *cb); | |
543 | void repo_diff_setup(struct repository *, struct diff_options *); | |
544 | struct option *add_diff_options(const struct option *, struct diff_options *); | |
545 | int diff_opt_parse(struct diff_options *, const char **, int, const char *); | |
546 | void diff_setup_done(struct diff_options *); | |
547 | ||
548 | /* | |
549 | * Returns true if the pathspec can work with --follow mode. If die_on_error is | |
550 | * set, die() with a specific error message rather than returning false. | |
551 | */ | |
552 | int diff_check_follow_pathspec(struct pathspec *ps, int die_on_error); | |
553 | ||
554 | int git_config_rename(const char *var, const char *value); | |
555 | ||
556 | #define DIFF_DETECT_RENAME 1 | |
557 | #define DIFF_DETECT_COPY 2 | |
558 | ||
559 | #define DIFF_PICKAXE_ALL 1 | |
560 | #define DIFF_PICKAXE_REGEX 2 | |
561 | ||
562 | #define DIFF_PICKAXE_KIND_S 4 /* traditional plumbing counter */ | |
563 | #define DIFF_PICKAXE_KIND_G 8 /* grep in the patch */ | |
564 | #define DIFF_PICKAXE_KIND_OBJFIND 16 /* specific object IDs */ | |
565 | ||
566 | #define DIFF_PICKAXE_KINDS_MASK (DIFF_PICKAXE_KIND_S | \ | |
567 | DIFF_PICKAXE_KIND_G | \ | |
568 | DIFF_PICKAXE_KIND_OBJFIND) | |
569 | #define DIFF_PICKAXE_KINDS_G_REGEX_MASK (DIFF_PICKAXE_KIND_G | \ | |
570 | DIFF_PICKAXE_REGEX) | |
571 | #define DIFF_PICKAXE_KINDS_ALL_OBJFIND_MASK (DIFF_PICKAXE_ALL | \ | |
572 | DIFF_PICKAXE_KIND_OBJFIND) | |
573 | ||
574 | #define DIFF_PICKAXE_IGNORE_CASE 32 | |
575 | ||
576 | void init_diffstat_widths(struct diff_options *); | |
577 | void diffcore_std(struct diff_options *); | |
578 | void diffcore_fix_diff_index(void); | |
579 | ||
580 | #define COMMON_DIFF_OPTIONS_HELP \ | |
581 | "\ncommon diff options:\n" \ | |
582 | " -z output diff-raw with lines terminated with NUL.\n" \ | |
583 | " -p output patch format.\n" \ | |
584 | " -u synonym for -p.\n" \ | |
585 | " --patch-with-raw\n" \ | |
586 | " output both a patch and the diff-raw format.\n" \ | |
587 | " --stat show diffstat instead of patch.\n" \ | |
588 | " --numstat show numeric diffstat instead of patch.\n" \ | |
589 | " --patch-with-stat\n" \ | |
590 | " output a patch and prepend its diffstat.\n" \ | |
591 | " --name-only show only names of changed files.\n" \ | |
592 | " --name-status show names and status of changed files.\n" \ | |
593 | " --full-index show full object name on index lines.\n" \ | |
594 | " --abbrev=<n> abbreviate object names in diff-tree header and diff-raw.\n" \ | |
595 | " -R swap input file pairs.\n" \ | |
596 | " -B detect complete rewrites.\n" \ | |
597 | " -M detect renames.\n" \ | |
598 | " -C detect copies.\n" \ | |
599 | " --find-copies-harder\n" \ | |
600 | " try unchanged files as candidate for copy detection.\n" \ | |
601 | " -l<n> limit rename attempts up to <n> paths.\n" \ | |
602 | " -O<file> reorder diffs according to the <file>.\n" \ | |
603 | " -S<string> find filepair whose only one side contains the string.\n" \ | |
604 | " --pickaxe-all\n" \ | |
605 | " show all files diff when -S is used and hit is found.\n" \ | |
606 | " -a --text treat all files as text.\n" | |
607 | ||
608 | int diff_queue_is_empty(struct diff_options *o); | |
609 | void diff_flush(struct diff_options*); | |
610 | void diff_free(struct diff_options*); | |
611 | void diff_warn_rename_limit(const char *varname, int needed, int degraded_cc); | |
612 | ||
613 | /* diff-raw status letters */ | |
614 | #define DIFF_STATUS_ADDED 'A' | |
615 | #define DIFF_STATUS_COPIED 'C' | |
616 | #define DIFF_STATUS_DELETED 'D' | |
617 | #define DIFF_STATUS_MODIFIED 'M' | |
618 | #define DIFF_STATUS_RENAMED 'R' | |
619 | #define DIFF_STATUS_TYPE_CHANGED 'T' | |
620 | #define DIFF_STATUS_UNKNOWN 'X' | |
621 | #define DIFF_STATUS_UNMERGED 'U' | |
622 | ||
623 | /* these are not diff-raw status letters proper, but used by | |
624 | * diffcore-filter insn to specify additional restrictions. | |
625 | */ | |
626 | #define DIFF_STATUS_FILTER_AON '*' | |
627 | #define DIFF_STATUS_FILTER_BROKEN 'B' | |
628 | ||
629 | /* | |
630 | * This is different from repo_find_unique_abbrev() in that | |
631 | * it stuffs the result with dots for alignment. | |
632 | */ | |
633 | const char *diff_aligned_abbrev(const struct object_id *sha1, int); | |
634 | ||
635 | void diff_get_merge_base(const struct rev_info *revs, struct object_id *mb); | |
636 | ||
637 | /* do not report anything on removed paths */ | |
638 | #define DIFF_SILENT_ON_REMOVED 01 | |
639 | /* report racily-clean paths as modified */ | |
640 | #define DIFF_RACY_IS_MODIFIED 02 | |
641 | void run_diff_files(struct rev_info *revs, unsigned int option); | |
642 | ||
643 | #define DIFF_INDEX_CACHED 01 | |
644 | #define DIFF_INDEX_MERGE_BASE 02 | |
645 | void run_diff_index(struct rev_info *revs, unsigned int option); | |
646 | ||
647 | int do_diff_cache(const struct object_id *, struct diff_options *); | |
648 | int diff_flush_patch_id(struct diff_options *, struct object_id *, int); | |
649 | void flush_one_hunk(struct object_id *result, git_hash_ctx *ctx); | |
650 | ||
651 | int diff_result_code(struct diff_options *); | |
652 | ||
653 | int diff_no_index(struct rev_info *, | |
654 | int implicit_no_index, int, const char **); | |
655 | ||
656 | int index_differs_from(struct repository *r, const char *def, | |
657 | const struct diff_flags *flags, | |
658 | int ita_invisible_in_index); | |
659 | ||
660 | /* | |
661 | * Emit an interdiff of two object ID's to 'diff_options.file' optionally | |
662 | * indented by 'indent' spaces. | |
663 | */ | |
664 | void show_interdiff(const struct object_id *, const struct object_id *, | |
665 | int indent, struct diff_options *); | |
666 | ||
667 | /* | |
668 | * Fill the contents of the filespec "df", respecting any textconv defined by | |
669 | * its userdiff driver. The "driver" parameter must come from a | |
670 | * previous call to get_textconv(), and therefore should either be NULL or have | |
671 | * textconv enabled. | |
672 | * | |
673 | * Note that the memory ownership of the resulting buffer depends on whether | |
674 | * the driver field is NULL. If it is, then the memory belongs to the filespec | |
675 | * struct. If it is non-NULL, then "outbuf" points to a newly allocated buffer | |
676 | * that should be freed by the caller. | |
677 | */ | |
678 | size_t fill_textconv(struct repository *r, | |
679 | struct userdiff_driver *driver, | |
680 | struct diff_filespec *df, | |
681 | char **outbuf); | |
682 | ||
683 | /* | |
684 | * Look up the userdiff driver for the given filespec, and return it if | |
685 | * and only if it has textconv enabled (otherwise return NULL). The result | |
686 | * can be passed to fill_textconv(). | |
687 | */ | |
688 | struct userdiff_driver *get_textconv(struct repository *r, | |
689 | struct diff_filespec *one); | |
690 | ||
691 | /* | |
692 | * Prepare diff_filespec and convert it using diff textconv API | |
693 | * if the textconv driver exists. | |
694 | * Return 1 if the conversion succeeds, 0 otherwise. | |
695 | */ | |
696 | int textconv_object(struct repository *repo, | |
697 | const char *path, | |
698 | unsigned mode, | |
699 | const struct object_id *oid, int oid_valid, | |
700 | char **buf, unsigned long *buf_size); | |
701 | ||
702 | int parse_rename_score(const char **cp_p); | |
703 | ||
704 | long parse_algorithm_value(const char *value); | |
705 | ||
706 | void print_stat_summary(FILE *fp, int files, | |
707 | int insertions, int deletions); | |
708 | void setup_diff_pager(struct diff_options *); | |
709 | ||
710 | extern int diff_auto_refresh_index; | |
711 | ||
712 | #endif /* DIFF_H */ |