Andrew's git - gitweb.git/blob

   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        void *util;
  15        unsigned long date;
  16        struct commit_list *parents;
  17        struct tree *tree;
  18        char *buffer;
  19};
  20
  21extern int save_commit_buffer;
  22extern const char *commit_type;
  23
  24struct commit *lookup_commit(const unsigned char *sha1);
  25struct commit *lookup_commit_reference(const unsigned char *sha1);
  26struct commit *lookup_commit_reference_gently(const unsigned char *sha1,
  27                                              int quiet);
  28
  29int parse_commit_buffer(struct commit *item, void *buffer, unsigned long size);
  30
  31int parse_commit(struct commit *item);
  32
  33struct commit_list * commit_list_insert(struct commit *item, struct commit_list **list_p);
  34struct commit_list * insert_by_date(struct commit *item, struct commit_list **list);
  35
  36void free_commit_list(struct commit_list *list);
  37
  38void sort_by_date(struct commit_list **list);
  39
  40/* Commit formats */
  41enum 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
  54extern enum cmit_fmt get_commit_format(const char *arg);
  55extern 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, int relative_date);
  56
  57/** Removes the first commit from a list sorted by date, and adds all
  58 * of its parents.
  59 **/
  60struct commit *pop_most_recent_commit(struct commit_list **list, 
  61                                      unsigned int mark);
  62
  63struct commit *pop_commit(struct commit_list **stack);
  64
  65void clear_commit_marks(struct commit *commit, unsigned int mark);
  66
  67int 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
  87typedef void (*topo_sort_set_fn_t)(struct commit*, void *data);
  88typedef void* (*topo_sort_get_fn_t)(struct commit*);
  89
  90void topo_sort_default_setter(struct commit *c, void *data);
  91void *topo_sort_default_getter(struct commit *c);
  92
  93void sort_in_topological_order(struct commit_list ** list, int lifo);
  94void 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
  98struct commit_graft {
  99        unsigned char sha1[20];
 100        int nr_parent; /* < 0 if shallow commit */
 101        unsigned char parent[FLEX_ARRAY][20]; /* more */
 102};
 103
 104struct commit_graft *read_graft_line(char *buf, int len);
 105int register_commit_graft(struct commit_graft *, int);
 106int read_graft_file(const char *graft_file);
 107
 108extern struct commit_list *get_merge_bases(struct commit *rev1, struct commit *rev2, int cleanup);
 109
 110extern int register_shallow(const unsigned char *sha1);
 111extern int unregister_shallow(const unsigned char *sha1);
 112extern int write_shallow_commits(int fd, int use_pack_protocol);
 113extern int is_repository_shallow(void);
 114extern struct commit_list *get_shallow_commits(struct object_array *heads,
 115                int depth, int shallow_flag, int not_shallow_flag);
 116
 117int in_merge_bases(struct commit *rev1, struct commit *rev2);
 118#endif /* COMMIT_H */