8 #include "gpg-interface.h"
9 #include "string-list.h"
14 struct commit_list *next;
22 struct commit_list *parents;
26 extern int save_commit_buffer;
27 extern const char *commit_type;
29 /* While we can decorate any object with a name, it's only used for commits.. */
30 struct name_decoration {
31 struct name_decoration *next;
33 char name[FLEX_ARRAY];
36 enum decoration_type {
39 DECORATION_REF_REMOTE,
46 void add_name_decoration(enum decoration_type type, const char *name, struct object *obj);
47 const struct name_decoration *get_name_decoration(const struct object *obj);
49 struct commit *lookup_commit(const struct object_id *oid);
50 struct commit *lookup_commit_reference(const struct object_id *oid);
51 struct commit *lookup_commit_reference_gently(const struct object_id *oid,
53 struct commit *lookup_commit_reference_by_name(const char *name);
56 * Look up object named by "oid", dereference tag as necessary,
57 * get a commit and return it. If "oid" does not dereference to
58 * a commit, use ref_name to report an error and die.
60 struct commit *lookup_commit_or_die(const struct object_id *oid, const char *ref_name);
62 int parse_commit_buffer(struct commit *item, const void *buffer, unsigned long size);
63 int parse_commit_gently(struct commit *item, int quiet_on_missing);
64 static inline int parse_commit(struct commit *item)
66 return parse_commit_gently(item, 0);
68 void parse_commit_or_die(struct commit *item);
71 * Associate an object buffer with the commit. The ownership of the
72 * memory is handed over to the commit, and must be free()-able.
74 void set_commit_buffer(struct commit *, void *buffer, unsigned long size);
77 * Get any cached object buffer associated with the commit. Returns NULL
78 * if none. The resulting memory should not be freed.
80 const void *get_cached_commit_buffer(const struct commit *, unsigned long *size);
83 * Get the commit's object contents, either from cache or by reading the object
84 * from disk. The resulting memory should not be modified, and must be given
85 * to unuse_commit_buffer when the caller is done.
87 const void *get_commit_buffer(const struct commit *, unsigned long *size);
90 * Tell the commit subsytem that we are done with a particular commit buffer.
91 * The commit and buffer should be the input and return value, respectively,
92 * from an earlier call to get_commit_buffer. The buffer may or may not be
93 * freed by this call; callers should not access the memory afterwards.
95 void unuse_commit_buffer(const struct commit *, const void *buffer);
98 * Free any cached object buffer associated with the commit.
100 void free_commit_buffer(struct commit *);
103 * Release memory related to a commit, including the parent list and
104 * any cached object buffer.
106 void release_commit_memory(struct commit *c);
109 * Disassociate any cached object buffer from the commit, but do not free it.
110 * The buffer (or NULL, if none) is returned.
112 const void *detach_commit_buffer(struct commit *, unsigned long *sizep);
114 /* Find beginning and length of commit subject. */
115 int find_commit_subject(const char *commit_buffer, const char **subject);
117 struct commit_list *commit_list_insert(struct commit *item,
118 struct commit_list **list);
119 struct commit_list **commit_list_append(struct commit *commit,
120 struct commit_list **next);
121 unsigned commit_list_count(const struct commit_list *l);
122 struct commit_list *commit_list_insert_by_date(struct commit *item,
123 struct commit_list **list);
124 void commit_list_sort_by_date(struct commit_list **list);
126 /* Shallow copy of the input list */
127 struct commit_list *copy_commit_list(struct commit_list *list);
129 void free_commit_list(struct commit_list *list);
131 struct rev_info; /* in revision.h, it circularly uses enum cmit_fmt */
133 extern int has_non_ascii(const char *text);
134 extern const char *logmsg_reencode(const struct commit *commit,
135 char **commit_encoding,
136 const char *output_encoding);
137 extern const char *skip_blank_lines(const char *msg);
139 /** Removes the first commit from a list sorted by date, and adds all
142 struct commit *pop_most_recent_commit(struct commit_list **list,
145 struct commit *pop_commit(struct commit_list **stack);
147 void clear_commit_marks(struct commit *commit, unsigned int mark);
148 void clear_commit_marks_many(int nr, struct commit **commit, unsigned int mark);
151 enum rev_sort_order {
152 REV_SORT_IN_GRAPH_ORDER = 0,
153 REV_SORT_BY_COMMIT_DATE,
154 REV_SORT_BY_AUTHOR_DATE
158 * Performs an in-place topological sort of list supplied.
160 * invariant of resulting list is:
161 * a reachable from b => ord(b) < ord(a)
162 * sort_order further specifies:
163 * REV_SORT_IN_GRAPH_ORDER: try to show a commit on a single-parent
165 * REV_SORT_BY_COMMIT_DATE: show eligible commits in committer-date order.
167 void sort_in_topological_order(struct commit_list **, enum rev_sort_order);
169 struct commit_graft {
170 struct object_id oid;
171 int nr_parent; /* < 0 if shallow commit */
172 struct object_id parent[FLEX_ARRAY]; /* more */
174 typedef int (*each_commit_graft_fn)(const struct commit_graft *, void *);
176 struct commit_graft *read_graft_line(struct strbuf *line);
177 #define register_commit_graft(r, g, i) register_commit_graft_##r(g, i)
178 int register_commit_graft_the_repository(struct commit_graft *, int);
179 #define lookup_commit_graft(r, o) lookup_commit_graft_##r(o)
180 struct commit_graft *lookup_commit_graft_the_repository(const struct object_id *oid);
182 extern struct commit_list *get_merge_bases(struct commit *rev1, struct commit *rev2);
183 extern struct commit_list *get_merge_bases_many(struct commit *one, int n, struct commit **twos);
184 extern struct commit_list *get_octopus_merge_bases(struct commit_list *in);
186 /* To be used only when object flags after this call no longer matter */
187 extern struct commit_list *get_merge_bases_many_dirty(struct commit *one, int n, struct commit **twos);
189 /* largest positive number a signed 32-bit integer can contain */
190 #define INFINITE_DEPTH 0x7fffffff
194 extern int register_shallow(const struct object_id *oid);
195 extern int unregister_shallow(const struct object_id *oid);
196 extern int for_each_commit_graft(each_commit_graft_fn, void *);
197 extern int is_repository_shallow(void);
198 extern struct commit_list *get_shallow_commits(struct object_array *heads,
199 int depth, int shallow_flag, int not_shallow_flag);
200 extern struct commit_list *get_shallow_commits_by_rev_list(
201 int ac, const char **av, int shallow_flag, int not_shallow_flag);
202 extern void set_alternate_shallow_file(const char *path, int override);
203 extern int write_shallow_commits(struct strbuf *out, int use_pack_protocol,
204 const struct oid_array *extra);
205 extern void setup_alternate_shallow(struct lock_file *shallow_lock,
206 const char **alternate_shallow_file,
207 const struct oid_array *extra);
208 extern const char *setup_temporary_shallow(const struct oid_array *extra);
209 extern void advertise_shallow_grafts(int);
211 struct shallow_info {
212 struct oid_array *shallow;
214 int *theirs, nr_theirs;
215 struct oid_array *ref;
217 /* for receive-pack */
218 uint32_t **used_shallow;
219 int *need_reachability_test;
222 struct commit **commits;
226 extern void prepare_shallow_info(struct shallow_info *, struct oid_array *);
227 extern void clear_shallow_info(struct shallow_info *);
228 extern void remove_nonexistent_theirs_shallow(struct shallow_info *);
229 extern void assign_shallow_commits_to_refs(struct shallow_info *info,
232 extern int delayed_reachability_test(struct shallow_info *si, int c);
233 extern void prune_shallow(int show_only);
234 extern struct trace_key trace_shallow;
236 int is_descendant_of(struct commit *, struct commit_list *);
237 int in_merge_bases(struct commit *, struct commit *);
238 int in_merge_bases_many(struct commit *, int, struct commit **);
240 extern int interactive_add(int argc, const char **argv, const char *prefix, int patch);
241 extern int run_add_interactive(const char *revision, const char *patch_mode,
242 const struct pathspec *pathspec);
245 * Takes a list of commits and returns a new list where those
246 * have been removed that can be reached from other commits in
247 * the list. It is useful for, e.g., reducing the commits
248 * randomly thrown at the git-merge command and removing
249 * redundant commits that the user shouldn't have given to it.
251 * This function destroys the STALE bit of the commit objects'
254 extern struct commit_list *reduce_heads(struct commit_list *heads);
257 * Like `reduce_heads()`, except it replaces the list. Use this
258 * instead of `foo = reduce_heads(foo);` to avoid memory leaks.
260 extern void reduce_heads_replace(struct commit_list **heads);
262 struct commit_extra_header {
263 struct commit_extra_header *next;
269 extern void append_merge_tag_headers(struct commit_list *parents,
270 struct commit_extra_header ***tail);
272 extern int commit_tree(const char *msg, size_t msg_len,
273 const struct object_id *tree,
274 struct commit_list *parents, struct object_id *ret,
275 const char *author, const char *sign_commit);
277 extern int commit_tree_extended(const char *msg, size_t msg_len,
278 const struct object_id *tree,
279 struct commit_list *parents,
280 struct object_id *ret, const char *author,
281 const char *sign_commit,
282 struct commit_extra_header *);
284 extern struct commit_extra_header *read_commit_extra_headers(struct commit *, const char **);
286 extern void free_commit_extra_headers(struct commit_extra_header *extra);
289 * Search the commit object contents given by "msg" for the header "key".
290 * Returns a pointer to the start of the header contents, or NULL. The length
291 * of the header, up to the first newline, is returned via out_len.
293 * Note that some headers (like mergetag) may be multi-line. It is the caller's
294 * responsibility to parse further in this case!
296 extern const char *find_commit_header(const char *msg, const char *key,
299 /* Find the end of the log message, the right place for a new trailer. */
300 extern int ignore_non_trailer(const char *buf, size_t len);
302 typedef void (*each_mergetag_fn)(struct commit *commit, struct commit_extra_header *extra,
305 extern void for_each_mergetag(each_mergetag_fn fn, struct commit *commit, void *data);
307 struct merge_remote_desc {
308 struct object *obj; /* the named object, could be a tag */
309 char name[FLEX_ARRAY];
311 #define merge_remote_util(commit) ((struct merge_remote_desc *)((commit)->util))
312 extern void set_merge_remote_desc(struct commit *commit,
313 const char *name, struct object *obj);
316 * Given "name" from the command line to merge, find the commit object
317 * and return it, while storing merge_remote_desc in its ->util field,
318 * to allow callers to tell if we are told to merge a tag.
320 struct commit *get_merge_parent(const char *name);
322 extern int parse_signed_commit(const struct commit *commit,
323 struct strbuf *message, struct strbuf *signature);
324 extern int remove_signature(struct strbuf *buf);
327 * Check the signature of the given commit. The result of the check is stored
328 * in sig->check_result, 'G' for a good signature, 'U' for a good signature
329 * from an untrusted signer, 'B' for a bad signature and 'N' for no signature
330 * at all. This may allocate memory for sig->gpg_output, sig->gpg_status,
331 * sig->signer and sig->key.
333 extern int check_commit_signature(const struct commit *commit, struct signature_check *sigc);
335 int compare_commits_by_commit_date(const void *a_, const void *b_, void *unused);
337 LAST_ARG_MUST_BE_NULL
338 extern int run_commit_hook(int editor_is_used, const char *index_file, const char *name, ...);
340 #endif /* COMMIT_H */