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[git/git.git] / commit.h
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1#ifndef COMMIT_H
2#define COMMIT_H
3
4#include "object.h"
5#include "tree.h"
6
7struct commit_list {
8 struct commit *item;
9 struct commit_list *next;
10};
11
12struct commit {
13 struct object object;
14 unsigned long date;
15 struct commit_list *parents;
16 struct tree *tree;
bd1e17e2 17 char *buffer;
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18};
19
60ab26de 20extern int save_commit_buffer;
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21extern const char *commit_type;
22
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23struct commit *lookup_commit(const unsigned char *sha1);
24struct commit *lookup_commit_reference(const unsigned char *sha1);
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25struct commit *lookup_commit_reference_gently(const unsigned char *sha1,
26 int quiet);
6eb8ae00 27
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28int parse_commit_buffer(struct commit *item, void *buffer, unsigned long size);
29
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30int parse_commit(struct commit *item);
31
ac5155ef 32struct commit_list * commit_list_insert(struct commit *item, struct commit_list **list_p);
f755494c 33struct commit_list * insert_by_date(struct commit *item, struct commit_list **list);
dd97f850 34
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35void free_commit_list(struct commit_list *list);
36
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37void sort_by_date(struct commit_list **list);
38
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39/* Commit formats */
40enum cmit_fmt {
41 CMIT_FMT_RAW,
42 CMIT_FMT_MEDIUM,
43 CMIT_FMT_DEFAULT = CMIT_FMT_MEDIUM,
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44 CMIT_FMT_SHORT,
45 CMIT_FMT_FULL,
d87449c5 46 CMIT_FMT_ONELINE,
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47};
48
9b66ec04 49extern enum cmit_fmt get_commit_format(const char *arg);
000182ea 50extern unsigned long pretty_print_commit(enum cmit_fmt fmt, const char *msg, unsigned long len, char *buf, unsigned long space);
e3bc7a3b 51
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52/** Removes the first commit from a list sorted by date, and adds all
53 * of its parents.
54 **/
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55struct commit *pop_most_recent_commit(struct commit_list **list,
56 unsigned int mark);
dd97f850 57
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58struct commit *pop_commit(struct commit_list **stack);
59
60int count_parents(struct commit * commit);
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61
62/*
63 * Performs an in-place topological sort of list supplied.
64 *
65 * Pre-conditions:
66 * all commits in input list and all parents of those
67 * commits must have object.util == NULL
68 *
69 * Post-conditions:
70 * invariant of resulting list is:
71 * a reachable from b => ord(b) < ord(a)
72 */
73void sort_in_topological_order(struct commit_list ** list);
6eb8ae00 74#endif /* COMMIT_H */