8 #include "gpg-interface.h"
9 #include "string-list.h"
11 #include "commit-slab.h"
13 #define COMMIT_NOT_FROM_GRAPH 0xFFFFFFFF
14 #define GENERATION_NUMBER_INFINITY 0xFFFFFFFF
15 #define GENERATION_NUMBER_MAX 0x3FFFFFFF
16 #define GENERATION_NUMBER_ZERO 0
20 struct commit_list
*next
;
24 * The size of this struct matters in full repo walk operations like
25 * 'git clone' or 'git gc'. Consider using commit-slab to attach data
26 * to a commit instead of adding new fields here.
31 struct commit_list
*parents
;
34 * If the commit is loaded from the commit-graph file, then this
35 * member may be NULL. Only access it through repo_get_commit_tree()
36 * or get_commit_tree_oid().
38 struct tree
*maybe_tree
;
42 extern int save_commit_buffer
;
43 extern const char *commit_type
;
45 /* While we can decorate any object with a name, it's only used for commits.. */
46 struct name_decoration
{
47 struct name_decoration
*next
;
49 char name
[FLEX_ARRAY
];
52 enum decoration_type
{
55 DECORATION_REF_REMOTE
,
62 void add_name_decoration(enum decoration_type type
, const char *name
, struct object
*obj
);
63 const struct name_decoration
*get_name_decoration(const struct object
*obj
);
65 struct commit
*lookup_commit(struct repository
*r
, const struct object_id
*oid
);
66 struct commit
*lookup_commit_reference(struct repository
*r
,
67 const struct object_id
*oid
);
68 struct commit
*lookup_commit_reference_gently(struct repository
*r
,
69 const struct object_id
*oid
,
71 struct commit
*lookup_commit_reference_by_name(const char *name
);
74 * Look up object named by "oid", dereference tag as necessary,
75 * get a commit and return it. If "oid" does not dereference to
76 * a commit, use ref_name to report an error and die.
78 struct commit
*lookup_commit_or_die(const struct object_id
*oid
, const char *ref_name
);
80 int parse_commit_buffer(struct repository
*r
, struct commit
*item
, const void *buffer
, unsigned long size
, int check_graph
);
81 int repo_parse_commit_internal(struct repository
*r
, struct commit
*item
,
82 int quiet_on_missing
, int use_commit_graph
);
83 int repo_parse_commit_gently(struct repository
*r
,
85 int quiet_on_missing
);
86 static inline int repo_parse_commit(struct repository
*r
, struct commit
*item
)
88 return repo_parse_commit_gently(r
, item
, 0);
91 static inline int parse_commit_no_graph(struct commit
*commit
)
93 return repo_parse_commit_internal(the_repository
, commit
, 0, 0);
96 #ifndef NO_THE_REPOSITORY_COMPATIBILITY_MACROS
97 #define parse_commit_internal(item, quiet, use) repo_parse_commit_internal(the_repository, item, quiet, use)
98 #define parse_commit(item) repo_parse_commit(the_repository, item)
101 void parse_commit_or_die(struct commit
*item
);
104 struct buffer_slab
*allocate_commit_buffer_slab(void);
105 void free_commit_buffer_slab(struct buffer_slab
*bs
);
108 * Associate an object buffer with the commit. The ownership of the
109 * memory is handed over to the commit, and must be free()-able.
111 void set_commit_buffer(struct repository
*r
, struct commit
*, void *buffer
, unsigned long size
);
114 * Get any cached object buffer associated with the commit. Returns NULL
115 * if none. The resulting memory should not be freed.
117 const void *get_cached_commit_buffer(struct repository
*, const struct commit
*, unsigned long *size
);
120 * Get the commit's object contents, either from cache or by reading the object
121 * from disk. The resulting memory should not be modified, and must be given
122 * to unuse_commit_buffer when the caller is done.
124 const void *repo_get_commit_buffer(struct repository
*r
,
125 const struct commit
*,
126 unsigned long *size
);
127 #ifndef NO_THE_REPOSITORY_COMPATIBILITY_MACROS
128 #define get_commit_buffer(c, s) repo_get_commit_buffer(the_repository, c, s)
132 * Tell the commit subsystem that we are done with a particular commit buffer.
133 * The commit and buffer should be the input and return value, respectively,
134 * from an earlier call to get_commit_buffer. The buffer may or may not be
135 * freed by this call; callers should not access the memory afterwards.
137 void repo_unuse_commit_buffer(struct repository
*r
,
138 const struct commit
*,
140 #ifndef NO_THE_REPOSITORY_COMPATIBILITY_MACROS
141 #define unuse_commit_buffer(c, b) repo_unuse_commit_buffer(the_repository, c, b)
145 * Free any cached object buffer associated with the commit.
147 void free_commit_buffer(struct parsed_object_pool
*pool
, struct commit
*);
149 struct tree
*repo_get_commit_tree(struct repository
*, const struct commit
*);
150 #define get_commit_tree(c) repo_get_commit_tree(the_repository, c)
151 struct object_id
*get_commit_tree_oid(const struct commit
*);
154 * Release memory related to a commit, including the parent list and
155 * any cached object buffer.
157 void release_commit_memory(struct parsed_object_pool
*pool
, struct commit
*c
);
160 * Disassociate any cached object buffer from the commit, but do not free it.
161 * The buffer (or NULL, if none) is returned.
163 const void *detach_commit_buffer(struct commit
*, unsigned long *sizep
);
165 /* Find beginning and length of commit subject. */
166 int find_commit_subject(const char *commit_buffer
, const char **subject
);
168 struct commit_list
*commit_list_insert(struct commit
*item
,
169 struct commit_list
**list
);
170 int commit_list_contains(struct commit
*item
,
171 struct commit_list
*list
);
172 struct commit_list
**commit_list_append(struct commit
*commit
,
173 struct commit_list
**next
);
174 unsigned commit_list_count(const struct commit_list
*l
);
175 struct commit_list
*commit_list_insert_by_date(struct commit
*item
,
176 struct commit_list
**list
);
177 void commit_list_sort_by_date(struct commit_list
**list
);
179 /* Shallow copy of the input list */
180 struct commit_list
*copy_commit_list(struct commit_list
*list
);
182 /* Modify list in-place to reverse it, returning new head; list will be tail */
183 struct commit_list
*reverse_commit_list(struct commit_list
*list
);
185 void free_commit_list(struct commit_list
*list
);
187 struct rev_info
; /* in revision.h, it circularly uses enum cmit_fmt */
189 int has_non_ascii(const char *text
);
190 const char *logmsg_reencode(const struct commit
*commit
,
191 char **commit_encoding
,
192 const char *output_encoding
);
193 const char *repo_logmsg_reencode(struct repository
*r
,
194 const struct commit
*commit
,
195 char **commit_encoding
,
196 const char *output_encoding
);
197 #ifndef NO_THE_REPOSITORY_COMPATIBILITY_MACROS
198 #define logmsg_reencode(c, enc, out) repo_logmsg_reencode(the_repository, c, enc, out)
201 const char *skip_blank_lines(const char *msg
);
203 /** Removes the first commit from a list sorted by date, and adds all
206 struct commit
*pop_most_recent_commit(struct commit_list
**list
,
209 struct commit
*pop_commit(struct commit_list
**stack
);
211 void clear_commit_marks(struct commit
*commit
, unsigned int mark
);
212 void clear_commit_marks_many(int nr
, struct commit
**commit
, unsigned int mark
);
215 enum rev_sort_order
{
216 REV_SORT_IN_GRAPH_ORDER
= 0,
217 REV_SORT_BY_COMMIT_DATE
,
218 REV_SORT_BY_AUTHOR_DATE
222 * Performs an in-place topological sort of list supplied.
224 * invariant of resulting list is:
225 * a reachable from b => ord(b) < ord(a)
226 * sort_order further specifies:
227 * REV_SORT_IN_GRAPH_ORDER: try to show a commit on a single-parent
229 * REV_SORT_BY_COMMIT_DATE: show eligible commits in committer-date order.
231 void sort_in_topological_order(struct commit_list
**, enum rev_sort_order
);
233 struct commit_graft
{
234 struct object_id oid
;
235 int nr_parent
; /* < 0 if shallow commit */
236 struct object_id parent
[FLEX_ARRAY
]; /* more */
238 typedef int (*each_commit_graft_fn
)(const struct commit_graft
*, void *);
240 struct commit_graft
*read_graft_line(struct strbuf
*line
);
241 /* commit_graft_pos returns an index into r->parsed_objects->grafts. */
242 int commit_graft_pos(struct repository
*r
, const unsigned char *sha1
);
243 int register_commit_graft(struct repository
*r
, struct commit_graft
*, int);
244 void prepare_commit_graft(struct repository
*r
);
245 struct commit_graft
*lookup_commit_graft(struct repository
*r
, const struct object_id
*oid
);
247 struct commit
*get_fork_point(const char *refname
, struct commit
*commit
);
249 /* largest positive number a signed 32-bit integer can contain */
250 #define INFINITE_DEPTH 0x7fffffff
254 int for_each_commit_graft(each_commit_graft_fn
, void *);
256 int interactive_add(const char **argv
, const char *prefix
, int patch
);
257 int run_add_interactive(const char *revision
, const char *patch_mode
,
258 const struct pathspec
*pathspec
);
260 struct commit_extra_header
{
261 struct commit_extra_header
*next
;
267 void append_merge_tag_headers(struct commit_list
*parents
,
268 struct commit_extra_header
***tail
);
270 int commit_tree(const char *msg
, size_t msg_len
,
271 const struct object_id
*tree
,
272 struct commit_list
*parents
, struct object_id
*ret
,
273 const char *author
, const char *sign_commit
);
275 int commit_tree_extended(const char *msg
, size_t msg_len
,
276 const struct object_id
*tree
,
277 struct commit_list
*parents
, struct object_id
*ret
,
278 const char *author
, const char *committer
,
279 const char *sign_commit
, struct commit_extra_header
*);
281 struct commit_extra_header
*read_commit_extra_headers(struct commit
*, const char **);
283 void free_commit_extra_headers(struct commit_extra_header
*extra
);
286 * Search the commit object contents given by "msg" for the header "key".
287 * Returns a pointer to the start of the header contents, or NULL. The length
288 * of the header, up to the first newline, is returned via out_len.
290 * Note that some headers (like mergetag) may be multi-line. It is the caller's
291 * responsibility to parse further in this case!
293 const char *find_commit_header(const char *msg
, const char *key
,
296 /* Find the end of the log message, the right place for a new trailer. */
297 size_t ignore_non_trailer(const char *buf
, size_t len
);
299 typedef int (*each_mergetag_fn
)(struct commit
*commit
, struct commit_extra_header
*extra
,
302 int for_each_mergetag(each_mergetag_fn fn
, struct commit
*commit
, void *data
);
304 struct merge_remote_desc
{
305 struct object
*obj
; /* the named object, could be a tag */
306 char name
[FLEX_ARRAY
];
308 struct merge_remote_desc
*merge_remote_util(struct commit
*);
309 void set_merge_remote_desc(struct commit
*commit
,
310 const char *name
, struct object
*obj
);
313 * Given "name" from the command line to merge, find the commit object
314 * and return it, while storing merge_remote_desc in its ->util field,
315 * to allow callers to tell if we are told to merge a tag.
317 struct commit
*get_merge_parent(const char *name
);
319 int parse_signed_commit(const struct commit
*commit
,
320 struct strbuf
*message
, struct strbuf
*signature
,
321 const struct git_hash_algo
*algop
);
322 int remove_signature(struct strbuf
*buf
);
325 * Check the signature of the given commit. The result of the check is stored
326 * in sig->check_result, 'G' for a good signature, 'U' for a good signature
327 * from an untrusted signer, 'B' for a bad signature and 'N' for no signature
328 * at all. This may allocate memory for sig->gpg_output, sig->gpg_status,
329 * sig->signer and sig->key.
331 int check_commit_signature(const struct commit
*commit
, struct signature_check
*sigc
);
333 /* record author-date for each commit object */
334 struct author_date_slab
;
335 void record_author_date(struct author_date_slab
*author_date
,
336 struct commit
*commit
);
338 int compare_commits_by_author_date(const void *a_
, const void *b_
, void *unused
);
341 * Verify a single commit with check_commit_signature() and die() if it is not
342 * a good signature. This isn't really suitable for general use, but is a
343 * helper to implement consistent logic for pull/merge --verify-signatures.
345 * The check_trust parameter is meant for backward-compatibility. The GPG
346 * interface verifies key trust with a default trust level that is below the
347 * default trust level for merge operations. Its value should be non-zero if
348 * the user hasn't set a minimum trust level explicitly in their configuration.
350 * If the user has set a minimum trust level, then that value should be obeyed
351 * and check_trust should be zero, even if the configured trust level is below
352 * the default trust level for merges.
354 void verify_merge_signature(struct commit
*commit
, int verbose
,
357 int compare_commits_by_commit_date(const void *a_
, const void *b_
, void *unused
);
358 int compare_commits_by_gen_then_commit_date(const void *a_
, const void *b_
, void *unused
);
360 LAST_ARG_MUST_BE_NULL
361 int run_commit_hook(int editor_is_used
, const char *index_file
, const char *name
, ...);
363 /* Sign a commit or tag buffer, storing the result in a header. */
364 int sign_with_header(struct strbuf
*buf
, const char *keyid
);
365 /* Parse the signature out of a header. */
366 int parse_buffer_signed_by_header(const char *buffer
,
368 struct strbuf
*payload
,
369 struct strbuf
*signature
,
370 const struct git_hash_algo
*algop
);
372 #endif /* COMMIT_H */