| #ifndef COMMIT_H |
| #define COMMIT_H |
| |
| #include "object.h" |
| #include "tree.h" |
| #include "strbuf.h" |
| #include "decorate.h" |
| #include "gpg-interface.h" |
| #include "string-list.h" |
| #include "pretty.h" |
| |
| #define COMMIT_NOT_FROM_GRAPH 0xFFFFFFFF |
| #define GENERATION_NUMBER_INFINITY 0xFFFFFFFF |
| #define GENERATION_NUMBER_MAX 0x3FFFFFFF |
| #define GENERATION_NUMBER_ZERO 0 |
| |
| struct commit_list { |
| struct commit *item; |
| struct commit_list *next; |
| }; |
| |
| /* |
| * The size of this struct matters in full repo walk operations like |
| * 'git clone' or 'git gc'. Consider using commit-slab to attach data |
| * to a commit instead of adding new fields here. |
| */ |
| struct commit { |
| struct object object; |
| timestamp_t date; |
| struct commit_list *parents; |
| |
| /* |
| * If the commit is loaded from the commit-graph file, then this |
| * member may be NULL. Only access it through get_commit_tree() |
| * or get_commit_tree_oid(). |
| */ |
| struct tree *maybe_tree; |
| uint32_t graph_pos; |
| uint32_t generation; |
| unsigned int index; |
| }; |
| |
| extern int save_commit_buffer; |
| extern const char *commit_type; |
| |
| /* While we can decorate any object with a name, it's only used for commits.. */ |
| struct name_decoration { |
| struct name_decoration *next; |
| int type; |
| char name[FLEX_ARRAY]; |
| }; |
| |
| enum decoration_type { |
| DECORATION_NONE = 0, |
| DECORATION_REF_LOCAL, |
| DECORATION_REF_REMOTE, |
| DECORATION_REF_TAG, |
| DECORATION_REF_STASH, |
| DECORATION_REF_HEAD, |
| DECORATION_GRAFTED, |
| }; |
| |
| void add_name_decoration(enum decoration_type type, const char *name, struct object *obj); |
| const struct name_decoration *get_name_decoration(const struct object *obj); |
| |
| struct commit *lookup_commit(struct repository *r, const struct object_id *oid); |
| struct commit *lookup_commit_reference(struct repository *r, |
| const struct object_id *oid); |
| struct commit *lookup_commit_reference_gently(struct repository *r, |
| const struct object_id *oid, |
| int quiet); |
| struct commit *lookup_commit_reference_by_name(const char *name); |
| |
| /* |
| * Look up object named by "oid", dereference tag as necessary, |
| * get a commit and return it. If "oid" does not dereference to |
| * a commit, use ref_name to report an error and die. |
| */ |
| struct commit *lookup_commit_or_die(const struct object_id *oid, const char *ref_name); |
| |
| int parse_commit_buffer(struct repository *r, struct commit *item, const void *buffer, unsigned long size, int check_graph); |
| int parse_commit_internal(struct commit *item, int quiet_on_missing, int use_commit_graph); |
| int parse_commit_gently(struct commit *item, int quiet_on_missing); |
| static inline int parse_commit(struct commit *item) |
| { |
| return parse_commit_gently(item, 0); |
| } |
| void parse_commit_or_die(struct commit *item); |
| |
| struct buffer_slab; |
| struct buffer_slab *allocate_commit_buffer_slab(void); |
| void free_commit_buffer_slab(struct buffer_slab *bs); |
| |
| /* |
| * Associate an object buffer with the commit. The ownership of the |
| * memory is handed over to the commit, and must be free()-able. |
| */ |
| void set_commit_buffer(struct repository *r, struct commit *, void *buffer, unsigned long size); |
| |
| /* |
| * Get any cached object buffer associated with the commit. Returns NULL |
| * if none. The resulting memory should not be freed. |
| */ |
| const void *get_cached_commit_buffer(struct repository *, const struct commit *, unsigned long *size); |
| |
| /* |
| * Get the commit's object contents, either from cache or by reading the object |
| * from disk. The resulting memory should not be modified, and must be given |
| * to unuse_commit_buffer when the caller is done. |
| */ |
| const void *get_commit_buffer(const struct commit *, unsigned long *size); |
| |
| /* |
| * Tell the commit subsytem that we are done with a particular commit buffer. |
| * The commit and buffer should be the input and return value, respectively, |
| * from an earlier call to get_commit_buffer. The buffer may or may not be |
| * freed by this call; callers should not access the memory afterwards. |
| */ |
| void unuse_commit_buffer(const struct commit *, const void *buffer); |
| |
| /* |
| * Free any cached object buffer associated with the commit. |
| */ |
| void free_commit_buffer(struct commit *); |
| |
| struct tree *get_commit_tree(const struct commit *); |
| struct object_id *get_commit_tree_oid(const struct commit *); |
| |
| /* |
| * Release memory related to a commit, including the parent list and |
| * any cached object buffer. |
| */ |
| void release_commit_memory(struct commit *c); |
| |
| /* |
| * Disassociate any cached object buffer from the commit, but do not free it. |
| * The buffer (or NULL, if none) is returned. |
| */ |
| const void *detach_commit_buffer(struct commit *, unsigned long *sizep); |
| |
| /* Find beginning and length of commit subject. */ |
| int find_commit_subject(const char *commit_buffer, const char **subject); |
| |
| struct commit_list *commit_list_insert(struct commit *item, |
| struct commit_list **list); |
| struct commit_list **commit_list_append(struct commit *commit, |
| struct commit_list **next); |
| unsigned commit_list_count(const struct commit_list *l); |
| struct commit_list *commit_list_insert_by_date(struct commit *item, |
| struct commit_list **list); |
| void commit_list_sort_by_date(struct commit_list **list); |
| |
| /* Shallow copy of the input list */ |
| struct commit_list *copy_commit_list(struct commit_list *list); |
| |
| void free_commit_list(struct commit_list *list); |
| |
| struct rev_info; /* in revision.h, it circularly uses enum cmit_fmt */ |
| |
| extern int has_non_ascii(const char *text); |
| extern const char *logmsg_reencode(const struct commit *commit, |
| char **commit_encoding, |
| const char *output_encoding); |
| extern const char *skip_blank_lines(const char *msg); |
| |
| /** Removes the first commit from a list sorted by date, and adds all |
| * of its parents. |
| **/ |
| struct commit *pop_most_recent_commit(struct commit_list **list, |
| unsigned int mark); |
| |
| struct commit *pop_commit(struct commit_list **stack); |
| |
| void clear_commit_marks(struct commit *commit, unsigned int mark); |
| void clear_commit_marks_many(int nr, struct commit **commit, unsigned int mark); |
| |
| |
| enum rev_sort_order { |
| REV_SORT_IN_GRAPH_ORDER = 0, |
| REV_SORT_BY_COMMIT_DATE, |
| REV_SORT_BY_AUTHOR_DATE |
| }; |
| |
| /* |
| * Performs an in-place topological sort of list supplied. |
| * |
| * invariant of resulting list is: |
| * a reachable from b => ord(b) < ord(a) |
| * sort_order further specifies: |
| * REV_SORT_IN_GRAPH_ORDER: try to show a commit on a single-parent |
| * chain together. |
| * REV_SORT_BY_COMMIT_DATE: show eligible commits in committer-date order. |
| */ |
| void sort_in_topological_order(struct commit_list **, enum rev_sort_order); |
| |
| struct commit_graft { |
| struct object_id oid; |
| int nr_parent; /* < 0 if shallow commit */ |
| struct object_id parent[FLEX_ARRAY]; /* more */ |
| }; |
| typedef int (*each_commit_graft_fn)(const struct commit_graft *, void *); |
| |
| struct commit_graft *read_graft_line(struct strbuf *line); |
| int register_commit_graft(struct repository *r, struct commit_graft *, int); |
| struct commit_graft *lookup_commit_graft(struct repository *r, const struct object_id *oid); |
| |
| extern struct commit_list *get_merge_bases(struct commit *rev1, struct commit *rev2); |
| extern struct commit_list *get_merge_bases_many(struct commit *one, int n, struct commit **twos); |
| extern struct commit_list *get_octopus_merge_bases(struct commit_list *in); |
| |
| /* To be used only when object flags after this call no longer matter */ |
| extern struct commit_list *get_merge_bases_many_dirty(struct commit *one, int n, struct commit **twos); |
| |
| /* largest positive number a signed 32-bit integer can contain */ |
| #define INFINITE_DEPTH 0x7fffffff |
| |
| struct oid_array; |
| struct ref; |
| extern int register_shallow(struct repository *r, const struct object_id *oid); |
| extern int unregister_shallow(const struct object_id *oid); |
| extern int for_each_commit_graft(each_commit_graft_fn, void *); |
| extern int is_repository_shallow(struct repository *r); |
| extern struct commit_list *get_shallow_commits(struct object_array *heads, |
| int depth, int shallow_flag, int not_shallow_flag); |
| extern struct commit_list *get_shallow_commits_by_rev_list( |
| int ac, const char **av, int shallow_flag, int not_shallow_flag); |
| extern void set_alternate_shallow_file(struct repository *r, const char *path, int override); |
| extern int write_shallow_commits(struct strbuf *out, int use_pack_protocol, |
| const struct oid_array *extra); |
| extern void setup_alternate_shallow(struct lock_file *shallow_lock, |
| const char **alternate_shallow_file, |
| const struct oid_array *extra); |
| extern const char *setup_temporary_shallow(const struct oid_array *extra); |
| extern void advertise_shallow_grafts(int); |
| |
| struct shallow_info { |
| struct oid_array *shallow; |
| int *ours, nr_ours; |
| int *theirs, nr_theirs; |
| struct oid_array *ref; |
| |
| /* for receive-pack */ |
| uint32_t **used_shallow; |
| int *need_reachability_test; |
| int *reachable; |
| int *shallow_ref; |
| struct commit **commits; |
| int nr_commits; |
| }; |
| |
| extern void prepare_shallow_info(struct shallow_info *, struct oid_array *); |
| extern void clear_shallow_info(struct shallow_info *); |
| extern void remove_nonexistent_theirs_shallow(struct shallow_info *); |
| extern void assign_shallow_commits_to_refs(struct shallow_info *info, |
| uint32_t **used, |
| int *ref_status); |
| extern int delayed_reachability_test(struct shallow_info *si, int c); |
| extern void prune_shallow(int show_only); |
| extern struct trace_key trace_shallow; |
| |
| int is_descendant_of(struct commit *, struct commit_list *); |
| int in_merge_bases(struct commit *, struct commit *); |
| int in_merge_bases_many(struct commit *, int, struct commit **); |
| |
| extern int interactive_add(int argc, const char **argv, const char *prefix, int patch); |
| extern int run_add_interactive(const char *revision, const char *patch_mode, |
| const struct pathspec *pathspec); |
| |
| /* |
| * Takes a list of commits and returns a new list where those |
| * have been removed that can be reached from other commits in |
| * the list. It is useful for, e.g., reducing the commits |
| * randomly thrown at the git-merge command and removing |
| * redundant commits that the user shouldn't have given to it. |
| * |
| * This function destroys the STALE bit of the commit objects' |
| * flags. |
| */ |
| extern struct commit_list *reduce_heads(struct commit_list *heads); |
| |
| /* |
| * Like `reduce_heads()`, except it replaces the list. Use this |
| * instead of `foo = reduce_heads(foo);` to avoid memory leaks. |
| */ |
| extern void reduce_heads_replace(struct commit_list **heads); |
| |
| struct commit_extra_header { |
| struct commit_extra_header *next; |
| char *key; |
| char *value; |
| size_t len; |
| }; |
| |
| extern void append_merge_tag_headers(struct commit_list *parents, |
| struct commit_extra_header ***tail); |
| |
| extern int commit_tree(const char *msg, size_t msg_len, |
| const struct object_id *tree, |
| struct commit_list *parents, struct object_id *ret, |
| const char *author, const char *sign_commit); |
| |
| extern int commit_tree_extended(const char *msg, size_t msg_len, |
| const struct object_id *tree, |
| struct commit_list *parents, |
| struct object_id *ret, const char *author, |
| const char *sign_commit, |
| struct commit_extra_header *); |
| |
| extern struct commit_extra_header *read_commit_extra_headers(struct commit *, const char **); |
| |
| extern void free_commit_extra_headers(struct commit_extra_header *extra); |
| |
| /* |
| * Search the commit object contents given by "msg" for the header "key". |
| * Returns a pointer to the start of the header contents, or NULL. The length |
| * of the header, up to the first newline, is returned via out_len. |
| * |
| * Note that some headers (like mergetag) may be multi-line. It is the caller's |
| * responsibility to parse further in this case! |
| */ |
| extern const char *find_commit_header(const char *msg, const char *key, |
| size_t *out_len); |
| |
| /* Find the end of the log message, the right place for a new trailer. */ |
| extern int ignore_non_trailer(const char *buf, size_t len); |
| |
| typedef int (*each_mergetag_fn)(struct commit *commit, struct commit_extra_header *extra, |
| void *cb_data); |
| |
| extern int for_each_mergetag(each_mergetag_fn fn, struct commit *commit, void *data); |
| |
| struct merge_remote_desc { |
| struct object *obj; /* the named object, could be a tag */ |
| char name[FLEX_ARRAY]; |
| }; |
| extern struct merge_remote_desc *merge_remote_util(struct commit *); |
| extern void set_merge_remote_desc(struct commit *commit, |
| const char *name, struct object *obj); |
| |
| /* |
| * Given "name" from the command line to merge, find the commit object |
| * and return it, while storing merge_remote_desc in its ->util field, |
| * to allow callers to tell if we are told to merge a tag. |
| */ |
| struct commit *get_merge_parent(const char *name); |
| |
| extern int parse_signed_commit(const struct commit *commit, |
| struct strbuf *message, struct strbuf *signature); |
| extern int remove_signature(struct strbuf *buf); |
| |
| /* |
| * Check the signature of the given commit. The result of the check is stored |
| * in sig->check_result, 'G' for a good signature, 'U' for a good signature |
| * from an untrusted signer, 'B' for a bad signature and 'N' for no signature |
| * at all. This may allocate memory for sig->gpg_output, sig->gpg_status, |
| * sig->signer and sig->key. |
| */ |
| extern int check_commit_signature(const struct commit *commit, struct signature_check *sigc); |
| |
| int compare_commits_by_commit_date(const void *a_, const void *b_, void *unused); |
| int compare_commits_by_gen_then_commit_date(const void *a_, const void *b_, void *unused); |
| |
| LAST_ARG_MUST_BE_NULL |
| extern int run_commit_hook(int editor_is_used, const char *index_file, const char *name, ...); |
| |
| #endif /* COMMIT_H */ |