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2 * Copyright (C) the libgit2 contributors. All rights reserved.
4 * This file is part of libgit2, distributed under the GNU GPL v2 with
5 * a Linking Exception. For full terms see the included COPYING file.
7 #ifndef INCLUDE_git_commit_h__
8 #define INCLUDE_git_commit_h__
17 * @brief Git commit parsing, formatting routines
18 * @defgroup git_commit Git commit parsing, formatting routines
25 * Lookup a commit object from a repository.
27 * The returned object should be released with `git_commit_free` when no
30 * @param commit pointer to the looked up commit
31 * @param repo the repo to use when locating the commit.
32 * @param id identity of the commit to locate. If the object is
33 * an annotated tag it will be peeled back to the commit.
34 * @return 0 or an error code
36 GIT_EXTERN(int) git_commit_lookup(
37 git_commit
**commit
, git_repository
*repo
, const git_oid
*id
);
40 * Lookup a commit object from a repository, given a prefix of its
41 * identifier (short id).
43 * The returned object should be released with `git_commit_free` when no
46 * @see git_object_lookup_prefix
48 * @param commit pointer to the looked up commit
49 * @param repo the repo to use when locating the commit.
50 * @param id identity of the commit to locate. If the object is
51 * an annotated tag it will be peeled back to the commit.
52 * @param len the length of the short identifier
53 * @return 0 or an error code
55 GIT_EXTERN(int) git_commit_lookup_prefix(
56 git_commit
**commit
, git_repository
*repo
, const git_oid
*id
, size_t len
);
59 * Close an open commit
61 * This is a wrapper around git_object_free()
64 * It *is* necessary to call this method when you stop
65 * using a commit. Failure to do so will cause a memory leak.
67 * @param commit the commit to close
70 GIT_EXTERN(void) git_commit_free(git_commit
*commit
);
73 * Get the id of a commit.
75 * @param commit a previously loaded commit.
76 * @return object identity for the commit.
78 GIT_EXTERN(const git_oid
*) git_commit_id(const git_commit
*commit
);
81 * Get the repository that contains the commit.
83 * @param commit A previously loaded commit.
84 * @return Repository that contains this commit.
86 GIT_EXTERN(git_repository
*) git_commit_owner(const git_commit
*commit
);
89 * Get the encoding for the message of a commit,
90 * as a string representing a standard encoding name.
92 * The encoding may be NULL if the `encoding` header
93 * in the commit is missing; in that case UTF-8 is assumed.
95 * @param commit a previously loaded commit.
96 * @return NULL, or the encoding
98 GIT_EXTERN(const char *) git_commit_message_encoding(const git_commit
*commit
);
101 * Get the full message of a commit.
103 * The returned message will be slightly prettified by removing any
104 * potential leading newlines.
106 * @param commit a previously loaded commit.
107 * @return the message of a commit
109 GIT_EXTERN(const char *) git_commit_message(const git_commit
*commit
);
112 * Get the full raw message of a commit.
114 * @param commit a previously loaded commit.
115 * @return the raw message of a commit
117 GIT_EXTERN(const char *) git_commit_message_raw(const git_commit
*commit
);
120 * Get the commit time (i.e. committer time) of a commit.
122 * @param commit a previously loaded commit.
123 * @return the time of a commit
125 GIT_EXTERN(git_time_t
) git_commit_time(const git_commit
*commit
);
128 * Get the commit timezone offset (i.e. committer's preferred timezone) of a commit.
130 * @param commit a previously loaded commit.
131 * @return positive or negative timezone offset, in minutes from UTC
133 GIT_EXTERN(int) git_commit_time_offset(const git_commit
*commit
);
136 * Get the committer of a commit.
138 * @param commit a previously loaded commit.
139 * @return the committer of a commit
141 GIT_EXTERN(const git_signature
*) git_commit_committer(const git_commit
*commit
);
144 * Get the author of a commit.
146 * @param commit a previously loaded commit.
147 * @return the author of a commit
149 GIT_EXTERN(const git_signature
*) git_commit_author(const git_commit
*commit
);
152 * Get the full raw text of the commit header.
154 * @param commit a previously loaded commit
155 * @return the header text of the commit
157 GIT_EXTERN(const char *) git_commit_raw_header(const git_commit
*commit
);
160 * Get the tree pointed to by a commit.
162 * @param tree_out pointer where to store the tree object
163 * @param commit a previously loaded commit.
164 * @return 0 or an error code
166 GIT_EXTERN(int) git_commit_tree(git_tree
**tree_out
, const git_commit
*commit
);
169 * Get the id of the tree pointed to by a commit. This differs from
170 * `git_commit_tree` in that no attempts are made to fetch an object
173 * @param commit a previously loaded commit.
174 * @return the id of tree pointed to by commit.
176 GIT_EXTERN(const git_oid
*) git_commit_tree_id(const git_commit
*commit
);
179 * Get the number of parents of this commit
181 * @param commit a previously loaded commit.
182 * @return integer of count of parents
184 GIT_EXTERN(unsigned int) git_commit_parentcount(const git_commit
*commit
);
187 * Get the specified parent of the commit.
189 * @param out Pointer where to store the parent commit
190 * @param commit a previously loaded commit.
191 * @param n the position of the parent (from 0 to `parentcount`)
192 * @return 0 or an error code
194 GIT_EXTERN(int) git_commit_parent(
196 const git_commit
*commit
,
200 * Get the oid of a specified parent for a commit. This is different from
201 * `git_commit_parent`, which will attempt to load the parent commit from
204 * @param commit a previously loaded commit.
205 * @param n the position of the parent (from 0 to `parentcount`)
206 * @return the id of the parent, NULL on error.
208 GIT_EXTERN(const git_oid
*) git_commit_parent_id(
209 const git_commit
*commit
,
213 * Get the commit object that is the <n>th generation ancestor
214 * of the named commit object, following only the first parents.
215 * The returned commit has to be freed by the caller.
217 * Passing `0` as the generation number returns another instance of the
218 * base commit itself.
220 * @param ancestor Pointer where to store the ancestor commit
221 * @param commit a previously loaded commit.
222 * @param n the requested generation
223 * @return 0 on success; GIT_ENOTFOUND if no matching ancestor exists
226 GIT_EXTERN(int) git_commit_nth_gen_ancestor(
227 git_commit
**ancestor
,
228 const git_commit
*commit
,
232 * Create new commit in the repository from a list of `git_object` pointers
234 * The message will not be cleaned up automatically. You can do that with
235 * the `git_message_prettify()` function.
237 * @param id Pointer in which to store the OID of the newly created commit
239 * @param repo Repository where to store the commit
241 * @param update_ref If not NULL, name of the reference that
242 * will be updated to point to this commit. If the reference
243 * is not direct, it will be resolved to a direct reference.
244 * Use "HEAD" to update the HEAD of the current branch and
245 * make it point to this commit. If the reference doesn't
246 * exist yet, it will be created.
248 * @param author Signature with author and author time of commit
250 * @param committer Signature with committer and * commit time of commit
252 * @param message_encoding The encoding for the message in the
253 * commit, represented with a standard encoding name.
254 * E.g. "UTF-8". If NULL, no encoding header is written and
257 * @param message Full message for this commit
259 * @param tree An instance of a `git_tree` object that will
260 * be used as the tree for the commit. This tree object must
261 * also be owned by the given `repo`.
263 * @param parent_count Number of parents for this commit
265 * @param parents Array of `parent_count` pointers to `git_commit`
266 * objects that will be used as the parents for this commit. This
267 * array may be NULL if `parent_count` is 0 (root commit). All the
268 * given commits must be owned by the `repo`.
270 * @return 0 or an error code
271 * The created commit will be written to the Object Database and
272 * the given reference will be updated to point to it
274 GIT_EXTERN(int) git_commit_create(
276 git_repository
*repo
,
277 const char *update_ref
,
278 const git_signature
*author
,
279 const git_signature
*committer
,
280 const char *message_encoding
,
282 const git_tree
*tree
,
284 const git_commit
*parents
[]);
287 * Create new commit in the repository using a variable argument list.
289 * The message will be cleaned up from excess whitespace and it will be made
290 * sure that the last line ends with a '\n'.
292 * The parents for the commit are specified as a variable list of pointers
293 * to `const git_commit *`. Note that this is a convenience method which may
294 * not be safe to export for certain languages or compilers
296 * All other parameters remain the same at `git_commit_create()`.
298 * @see git_commit_create
300 GIT_EXTERN(int) git_commit_create_v(
302 git_repository
*repo
,
303 const char *update_ref
,
304 const git_signature
*author
,
305 const git_signature
*committer
,
306 const char *message_encoding
,
308 const git_tree
*tree
,