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
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_git_revwalk_h__
#define INCLUDE_git_revwalk_h__
#include "common.h"
#include "types.h"
#include "oid.h"
/**
* @file git2/revwalk.h
* @brief Git revision traversal routines
* @defgroup git_revwalk Git revision traversal routines
* @ingroup Git
* @{
*/
GIT_BEGIN_DECL
/**
* Sort the repository contents in no particular ordering;
* this sorting is arbitrary, implementation-specific
* and subject to change at any time.
* This is the default sorting for new walkers.
*/
#define GIT_SORT_NONE (0)
/**
* Sort the repository contents in topological order
* (parents before children); this sorting mode
* can be combined with time sorting.
*/
#define GIT_SORT_TOPOLOGICAL (1 << 0)
/**
* Sort the repository contents by commit time;
* this sorting mode can be combined with
* topological sorting.
*/
#define GIT_SORT_TIME (1 << 1)
/**
* Iterate through the repository contents in reverse
* order; this sorting mode can be combined with
* any of the above.
*/
#define GIT_SORT_REVERSE (1 << 2)
/**
* Allocate a new revision walker to iterate through a repo.
*
* This revision walker uses a custom memory pool and an internal
* commit cache, so it is relatively expensive to allocate.
*
* For maximum performance, this revision walker should be
* reused for different walks.
*
* This revision walker is *not* thread safe: it may only be
* used to walk a repository on a single thread; however,
* it is possible to have several revision walkers in
* several different threads walking the same repository.
*
* @param out pointer to the new revision walker
* @param repo the repo to walk through
* @return 0 or an error code
*/
GIT_EXTERN(int) git_revwalk_new(git_revwalk **out, git_repository *repo);
/**
* Reset the revision walker for reuse.
*
* This will clear all the pushed and hidden commits, and
* leave the walker in a blank state (just like at
* creation) ready to receive new commit pushes and
* start a new walk.
*
* The revision walk is automatically reset when a walk
* is over.
*
* @param walker handle to reset.
*/
GIT_EXTERN(void) git_revwalk_reset(git_revwalk *walker);
/**
* Mark a commit to start traversal from.
*
* The given OID must belong to a commit on the walked
* repository.
*
* The given commit will be used as one of the roots
* when starting the revision walk. At least one commit
* must be pushed onto the walker before a walk can
* be started.
*
* @param walk the walker being used for the traversal.
* @param id the oid of the commit to start from.
* @return 0 or an error code
*/
GIT_EXTERN(int) git_revwalk_push(git_revwalk *walk, const git_oid *id);
/**
* Push matching references
*
* The OIDs pointed to by the references that match the given glob
* pattern will be pushed to the revision walker.
*
* A leading 'refs/' is implied if not present as well as a trailing
* '/ *' if the glob lacks '?', '*' or '['.
*
* @param walk the walker being used for the traversal
* @param glob the glob pattern references should match
* @return 0 or an error code
*/
GIT_EXTERN(int) git_revwalk_push_glob(git_revwalk *walk, const char *glob);
/**
* Push the repository's HEAD
*
* @param walk the walker being used for the traversal
* @return 0 or an error code
*/
GIT_EXTERN(int) git_revwalk_push_head(git_revwalk *walk);
/**
* Mark a commit (and its ancestors) uninteresting for the output.
*
* The given OID must belong to a commit on the walked
* repository.
*
* The resolved commit and all its parents will be hidden from the
* output on the revision walk.
*
* @param walk the walker being used for the traversal.
* @param commit_id the oid of commit that will be ignored during the traversal
* @return 0 or an error code
*/
GIT_EXTERN(int) git_revwalk_hide(git_revwalk *walk, const git_oid *commit_id);
/**
* Hide matching references.
*
* The OIDs pointed to by the references that match the given glob
* pattern and their ancestors will be hidden from the output on the
* revision walk.
*
* A leading 'refs/' is implied if not present as well as a trailing
* '/ *' if the glob lacks '?', '*' or '['.
*
* @param walk the walker being used for the traversal
* @param glob the glob pattern references should match
* @return 0 or an error code
*/
GIT_EXTERN(int) git_revwalk_hide_glob(git_revwalk *walk, const char *glob);
/**
* Hide the repository's HEAD
*
* @param walk the walker being used for the traversal
* @return 0 or an error code
*/
GIT_EXTERN(int) git_revwalk_hide_head(git_revwalk *walk);
/**
* Push the OID pointed to by a reference
*
* The reference must point to a commit.
*
* @param walk the walker being used for the traversal
* @param refname the reference to push
* @return 0 or an error code
*/
GIT_EXTERN(int) git_revwalk_push_ref(git_revwalk *walk, const char *refname);
/**
* Hide the OID pointed to by a reference
*
* The reference must point to a commit.
*
* @param walk the walker being used for the traversal
* @param refname the reference to hide
* @return 0 or an error code
*/
GIT_EXTERN(int) git_revwalk_hide_ref(git_revwalk *walk, const char *refname);
/**
* Get the next commit from the revision walk.
*
* The initial call to this method is *not* blocking when
* iterating through a repo with a time-sorting mode.
*
* Iterating with Topological or inverted modes makes the initial
* call blocking to preprocess the commit list, but this block should be
* mostly unnoticeable on most repositories (topological preprocessing
* times at 0.3s on the git.git repo).
*
* The revision walker is reset when the walk is over.
*
* @param out Pointer where to store the oid of the next commit
* @param walk the walker to pop the commit from.
* @return 0 if the next commit was found;
* GIT_ITEROVER if there are no commits left to iterate
*/
GIT_EXTERN(int) git_revwalk_next(git_oid *out, git_revwalk *walk);
/**
* Change the sorting mode when iterating through the
* repository's contents.
*
* Changing the sorting mode resets the walker.
*
* @param walk the walker being used for the traversal.
* @param sort_mode combination of GIT_SORT_XXX flags
*/
GIT_EXTERN(void) git_revwalk_sorting(git_revwalk *walk, unsigned int sort_mode);
/**
* Push and hide the respective endpoints of the given range.
*
* The range should be of the form
* <commit>..<commit>
* where each <commit> is in the form accepted by 'git_revparse_single'.
* The left-hand commit will be hidden and the right-hand commit pushed.
*
* @param walk the walker being used for the traversal
* @param range the range
* @return 0 or an error code
*
*/
GIT_EXTERN(int) git_revwalk_push_range(git_revwalk *walk, const char *range);
/**
* Free a revision walker previously allocated.
*
* @param walk traversal handle to close. If NULL nothing occurs.
*/
GIT_EXTERN(void) git_revwalk_free(git_revwalk *walk);
/**
* Return the repository on which this walker
* is operating.
*
* @param walk the revision walker
* @return the repository being walked
*/
GIT_EXTERN(git_repository *) git_revwalk_repository(git_revwalk *walk);
/** @} */
GIT_END_DECL
#endif
|
