1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
|
#ifndef REVISION_H
#define REVISION_H
#include "commit.h"
#include "parse-options.h"
#include "grep.h"
#include "notes.h"
#include "pretty.h"
#include "diff.h"
#include "commit-slab-decl.h"
/**
* The revision walking API offers functions to build a list of revisions
* and then iterate over that list.
*
* Calling sequence
* ----------------
*
* The walking API has a given calling sequence: first you need to initialize
* a rev_info structure, then add revisions to control what kind of revision
* list do you want to get, finally you can iterate over the revision list.
*
*/
/* Remember to update object flag allocation in object.h */
#define SEEN (1u<<0)
#define UNINTERESTING (1u<<1)
#define TREESAME (1u<<2)
#define SHOWN (1u<<3)
#define TMP_MARK (1u<<4) /* for isolated cases; clean after use */
#define BOUNDARY (1u<<5)
#define CHILD_SHOWN (1u<<6)
#define ADDED (1u<<7) /* Parents already parsed and added? */
#define SYMMETRIC_LEFT (1u<<8)
#define PATCHSAME (1u<<9)
#define BOTTOM (1u<<10)
/* WARNING: This is also used as REACHABLE in commit-graph.c. */
#define PULL_MERGE (1u<<15)
/*
* Indicates object was reached by traversal. i.e. not given by user on
* command-line or stdin.
* NEEDSWORK: NOT_USER_GIVEN doesn't apply to commits because we only support
* filtering trees and blobs, but it may be useful to support filtering commits
* in the future.
*/
#define NOT_USER_GIVEN (1u<<25)
#define TRACK_LINEAR (1u<<26)
#define ALL_REV_FLAGS (((1u<<11)-1) | NOT_USER_GIVEN | TRACK_LINEAR | PULL_MERGE)
#define TOPO_WALK_EXPLORED (1u<<27)
#define TOPO_WALK_INDEGREE (1u<<28)
#define DECORATE_SHORT_REFS 1
#define DECORATE_FULL_REFS 2
struct log_info;
struct repository;
struct rev_info;
struct string_list;
struct saved_parents;
define_shared_commit_slab(revision_sources, char *);
struct rev_cmdline_info {
unsigned int nr;
unsigned int alloc;
struct rev_cmdline_entry {
struct object *item;
const char *name;
enum {
REV_CMD_REF,
REV_CMD_PARENTS_ONLY,
REV_CMD_LEFT,
REV_CMD_RIGHT,
REV_CMD_MERGE_BASE,
REV_CMD_REV
} whence;
unsigned flags;
} *rev;
};
#define REVISION_WALK_WALK 0
#define REVISION_WALK_NO_WALK_SORTED 1
#define REVISION_WALK_NO_WALK_UNSORTED 2
struct oidset;
struct topo_walk_info;
struct rev_info {
/* Starting list */
struct commit_list *commits;
struct object_array pending;
struct repository *repo;
/* Parents of shown commits */
struct object_array boundary_commits;
/* The end-points specified by the end user */
struct rev_cmdline_info cmdline;
/* excluding from --branches, --refs, etc. expansion */
struct string_list *ref_excludes;
/* Basic information */
const char *prefix;
const char *def;
struct pathspec prune_data;
/*
* Whether the arguments parsed by setup_revisions() included any
* "input" revisions that might still have yielded an empty pending
* list (e.g., patterns like "--all" or "--glob").
*/
int rev_input_given;
/*
* Whether we read from stdin due to the --stdin option.
*/
int read_from_stdin;
/* topo-sort */
enum rev_sort_order sort_order;
unsigned int early_output;
unsigned int ignore_missing:1,
ignore_missing_links:1;
/* Traversal flags */
unsigned int dense:1,
prune:1,
no_walk:2,
remove_empty_trees:1,
simplify_history:1,
show_pulls:1,
topo_order:1,
simplify_merges:1,
simplify_by_decoration:1,
single_worktree:1,
tag_objects:1,
tree_objects:1,
blob_objects:1,
verify_objects:1,
edge_hint:1,
edge_hint_aggressive:1,
limited:1,
unpacked:1,
boundary:2,
count:1,
left_right:1,
left_only:1,
right_only:1,
rewrite_parents:1,
print_parents:1,
show_decorations:1,
reverse:1,
reverse_output_stage:1,
cherry_pick:1,
cherry_mark:1,
bisect:1,
ancestry_path:1,
first_parent_only:1,
line_level_traverse:1,
tree_blobs_in_commit_order:1,
/*
* Blobs are shown without regard for their existence.
* But not so for trees: unless exclude_promisor_objects
* is set and the tree in question is a promisor object;
* OR ignore_missing_links is set, the revision walker
* dies with a "bad tree object HASH" message when
* encountering a missing tree. For callers that can
* handle missing trees and want them to be filterable
* and showable, set this to true. The revision walker
* will filter and show such a missing tree as usual,
* but will not attempt to recurse into this tree
* object.
*/
do_not_die_on_missing_tree:1,
/* for internal use only */
exclude_promisor_objects:1;
/* Diff flags */
unsigned int diff:1,
full_diff:1,
show_root_diff:1,
no_commit_id:1,
verbose_header:1,
ignore_merges:1,
combine_merges:1,
combined_all_paths:1,
dense_combined_merges:1,
always_show_header:1;
/* Format info */
int show_notes;
unsigned int shown_one:1,
shown_dashes:1,
show_merge:1,
show_notes_given:1,
show_signature:1,
pretty_given:1,
abbrev_commit:1,
abbrev_commit_given:1,
zero_commit:1,
use_terminator:1,
missing_newline:1,
date_mode_explicit:1,
preserve_subject:1;
unsigned int disable_stdin:1;
/* --show-linear-break */
unsigned int track_linear:1,
track_first_time:1,
linear:1;
struct date_mode date_mode;
int expand_tabs_in_log; /* unset if negative */
int expand_tabs_in_log_default;
unsigned int abbrev;
enum cmit_fmt commit_format;
struct log_info *loginfo;
int nr, total;
const char *mime_boundary;
const char *patch_suffix;
int numbered_files;
int reroll_count;
char *message_id;
struct ident_split from_ident;
struct string_list *ref_message_ids;
int add_signoff;
const char *extra_headers;
const char *log_reencode;
const char *subject_prefix;
int no_inline;
int show_log_size;
struct string_list *mailmap;
/* Filter by commit log message */
struct grep_opt grep_filter;
/* Negate the match of grep_filter */
int invert_grep;
/* Display history graph */
struct git_graph *graph;
/* special limits */
int skip_count;
int max_count;
timestamp_t max_age;
timestamp_t min_age;
int min_parents;
int max_parents;
int (*include_check)(struct commit *, void *);
void *include_check_data;
/* diff info for patches and for paths limiting */
struct diff_options diffopt;
struct diff_options pruning;
struct reflog_walk_info *reflog_info;
struct decoration children;
struct decoration merge_simplification;
struct decoration treesame;
/* notes-specific options: which refs to show */
struct display_notes_opt notes_opt;
/* interdiff */
const struct object_id *idiff_oid1;
const struct object_id *idiff_oid2;
const char *idiff_title;
/* range-diff */
const char *rdiff1;
const char *rdiff2;
int creation_factor;
const char *rdiff_title;
/* commit counts */
int count_left;
int count_right;
int count_same;
/* line level range that we are chasing */
struct decoration line_log_data;
/* copies of the parent lists, for --full-diff display */
struct saved_parents *saved_parents_slab;
struct commit_list *previous_parents;
const char *break_bar;
struct revision_sources *sources;
struct topo_walk_info *topo_walk_info;
};
int ref_excluded(struct string_list *, const char *path);
void clear_ref_exclusion(struct string_list **);
void add_ref_exclusion(struct string_list **, const char *exclude);
#define REV_TREE_SAME 0
#define REV_TREE_NEW 1 /* Only new files */
#define REV_TREE_OLD 2 /* Only files removed */
#define REV_TREE_DIFFERENT 3 /* Mixed changes */
/* revision.c */
typedef void (*show_early_output_fn_t)(struct rev_info *, struct commit_list *);
extern volatile show_early_output_fn_t show_early_output;
struct setup_revision_opt {
const char *def;
void (*tweak)(struct rev_info *, struct setup_revision_opt *);
const char *submodule; /* TODO: drop this and use rev_info->repo */
unsigned int assume_dashdash:1,
allow_exclude_promisor_objects:1;
unsigned revarg_opt;
};
#ifndef NO_THE_REPOSITORY_COMPATIBILITY_MACROS
#define init_revisions(revs, prefix) repo_init_revisions(the_repository, revs, prefix)
#endif
/**
* Initialize a rev_info structure with default values. The third parameter may
* be NULL or can be prefix path, and then the `.prefix` variable will be set
* to it. This is typically the first function you want to call when you want
* to deal with a revision list. After calling this function, you are free to
* customize options, like set `.ignore_merges` to 0 if you don't want to
* ignore merges, and so on.
*/
void repo_init_revisions(struct repository *r,
struct rev_info *revs,
const char *prefix);
/**
* Parse revision information, filling in the `rev_info` structure, and
* removing the used arguments from the argument list. Returns the number
* of arguments left that weren't recognized, which are also moved to the
* head of the argument list. The last parameter is used in case no
* parameter given by the first two arguments.
*/
int setup_revisions(int argc, const char **argv, struct rev_info *revs,
struct setup_revision_opt *);
void parse_revision_opt(struct rev_info *revs, struct parse_opt_ctx_t *ctx,
const struct option *options,
const char * const usagestr[]);
#define REVARG_CANNOT_BE_FILENAME 01
#define REVARG_COMMITTISH 02
int handle_revision_arg(const char *arg, struct rev_info *revs,
int flags, unsigned revarg_opt);
/**
* Reset the flags used by the revision walking api. You can use this to do
* multiple sequential revision walks.
*/
void reset_revision_walk(void);
/**
* Prepares the rev_info structure for a walk. You should check if it returns
* any error (non-zero return code) and if it does not, you can start using
* get_revision() to do the iteration.
*/
int prepare_revision_walk(struct rev_info *revs);
/**
* Takes a pointer to a `rev_info` structure and iterates over it, returning a
* `struct commit *` each time you call it. The end of the revision list is
* indicated by returning a NULL pointer.
*/
struct commit *get_revision(struct rev_info *revs);
const char *get_revision_mark(const struct rev_info *revs,
const struct commit *commit);
void put_revision_mark(const struct rev_info *revs,
const struct commit *commit);
void mark_parents_uninteresting(struct commit *commit);
void mark_tree_uninteresting(struct repository *r, struct tree *tree);
void mark_trees_uninteresting_sparse(struct repository *r, struct oidset *trees);
void show_object_with_name(FILE *, struct object *, const char *);
/**
* This function can be used if you want to add commit objects as revision
* information. You can use the `UNINTERESTING` object flag to indicate if
* you want to include or exclude the given commit (and commits reachable
* from the given commit) from the revision list.
*
* NOTE: If you have the commits as a string list then you probably want to
* use setup_revisions(), instead of parsing each string and using this
* function.
*/
void add_pending_object(struct rev_info *revs,
struct object *obj, const char *name);
void add_pending_oid(struct rev_info *revs,
const char *name, const struct object_id *oid,
unsigned int flags);
void add_head_to_pending(struct rev_info *);
void add_reflogs_to_pending(struct rev_info *, unsigned int flags);
void add_index_objects_to_pending(struct rev_info *, unsigned int flags);
enum commit_action {
commit_ignore,
commit_show,
commit_error
};
enum commit_action get_commit_action(struct rev_info *revs,
struct commit *commit);
enum commit_action simplify_commit(struct rev_info *revs,
struct commit *commit);
enum rewrite_result {
rewrite_one_ok,
rewrite_one_noparents,
rewrite_one_error
};
typedef enum rewrite_result (*rewrite_parent_fn_t)(struct rev_info *revs, struct commit **pp);
int rewrite_parents(struct rev_info *revs,
struct commit *commit,
rewrite_parent_fn_t rewrite_parent);
/*
* The log machinery saves the original parent list so that
* get_saved_parents() can later tell what the real parents of the
* commits are, when commit->parents has been modified by history
* simpification.
*
* get_saved_parents() will transparently return commit->parents if
* history simplification is off.
*/
struct commit_list *get_saved_parents(struct rev_info *revs, const struct commit *commit);
#endif
|