Merge branch 'gl/web'
[git/git.git] / commit.h
1 #ifndef COMMIT_H
2 #define COMMIT_H
3
4 #include "object.h"
5 #include "tree.h"
6
7 struct commit_list {
8 struct commit *item;
9 struct commit_list *next;
10 };
11
12 struct commit {
13 struct object object;
14 void *util;
15 unsigned long date;
16 struct commit_list *parents;
17 struct tree *tree;
18 char *buffer;
19 };
20
21 extern int save_commit_buffer;
22 extern const char *commit_type;
23
24 struct commit *lookup_commit(const unsigned char *sha1);
25 struct commit *lookup_commit_reference(const unsigned char *sha1);
26 struct commit *lookup_commit_reference_gently(const unsigned char *sha1,
27 int quiet);
28
29 int parse_commit_buffer(struct commit *item, void *buffer, unsigned long size);
30
31 int parse_commit(struct commit *item);
32
33 struct commit_list * commit_list_insert(struct commit *item, struct commit_list **list_p);
34 struct commit_list * insert_by_date(struct commit *item, struct commit_list **list);
35
36 void free_commit_list(struct commit_list *list);
37
38 void sort_by_date(struct commit_list **list);
39
40 /* Commit formats */
41 enum cmit_fmt {
42 CMIT_FMT_RAW,
43 CMIT_FMT_MEDIUM,
44 CMIT_FMT_DEFAULT = CMIT_FMT_MEDIUM,
45 CMIT_FMT_SHORT,
46 CMIT_FMT_FULL,
47 CMIT_FMT_FULLER,
48 CMIT_FMT_ONELINE,
49 CMIT_FMT_EMAIL,
50
51 CMIT_FMT_UNSPECIFIED,
52 };
53
54 extern enum cmit_fmt get_commit_format(const char *arg);
55 extern unsigned long pretty_print_commit(enum cmit_fmt fmt, const struct commit *, unsigned long len, char *buf, unsigned long space, int abbrev, const char *subject, const char *after_subject);
56
57 /** Removes the first commit from a list sorted by date, and adds all
58 * of its parents.
59 **/
60 struct commit *pop_most_recent_commit(struct commit_list **list,
61 unsigned int mark);
62
63 struct commit *pop_commit(struct commit_list **stack);
64
65 void clear_commit_marks(struct commit *commit, unsigned int mark);
66
67 int count_parents(struct commit * commit);
68
69 /*
70 * Performs an in-place topological sort of list supplied.
71 *
72 * Pre-conditions for sort_in_topological_order:
73 * all commits in input list and all parents of those
74 * commits must have object.util == NULL
75 *
76 * Pre-conditions for sort_in_topological_order_fn:
77 * all commits in input list and all parents of those
78 * commits must have getter(commit) == NULL
79 *
80 * Post-conditions:
81 * invariant of resulting list is:
82 * a reachable from b => ord(b) < ord(a)
83 * in addition, when lifo == 0, commits on parallel tracks are
84 * sorted in the dates order.
85 */
86
87 typedef void (*topo_sort_set_fn_t)(struct commit*, void *data);
88 typedef void* (*topo_sort_get_fn_t)(struct commit*);
89
90 void topo_sort_default_setter(struct commit *c, void *data);
91 void *topo_sort_default_getter(struct commit *c);
92
93 void sort_in_topological_order(struct commit_list ** list, int lifo);
94 void sort_in_topological_order_fn(struct commit_list ** list, int lifo,
95 topo_sort_set_fn_t setter,
96 topo_sort_get_fn_t getter);
97
98 struct commit_graft {
99 unsigned char sha1[20];
100 int nr_parent;
101 unsigned char parent[FLEX_ARRAY][20]; /* more */
102 };
103
104 struct commit_graft *read_graft_line(char *buf, int len);
105 int register_commit_graft(struct commit_graft *, int);
106 int read_graft_file(const char *graft_file);
107
108 extern struct commit_list *get_merge_bases(struct commit *rev1, struct commit *rev2, int cleanup);
109
110 #endif /* COMMIT_H */