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        CMIT_FMT_USERFORMAT,
  51
  52        CMIT_FMT_UNSPECIFIED,
  53};
  54
  55extern enum cmit_fmt get_commit_format(const char *arg);
  56extern 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);
  57
  58/** Removes the first commit from a list sorted by date, and adds all
  59 * of its parents.
  60 **/
  61struct commit *pop_most_recent_commit(struct commit_list **list, 
  62                                      unsigned int mark);
  63
  64struct commit *pop_commit(struct commit_list **stack);
  65
  66void clear_commit_marks(struct commit *commit, unsigned int mark);
  67
  68int count_parents(struct commit * commit);
  69
  70/*
  71 * Performs an in-place topological sort of list supplied.
  72 *
  73 * Pre-conditions for sort_in_topological_order:
  74 *   all commits in input list and all parents of those
  75 *   commits must have object.util == NULL
  76 *
  77 * Pre-conditions for sort_in_topological_order_fn:
  78 *   all commits in input list and all parents of those
  79 *   commits must have getter(commit) == NULL
  80 *
  81 * Post-conditions:
  82 *   invariant of resulting list is:
  83 *      a reachable from b => ord(b) < ord(a)
  84 *   in addition, when lifo == 0, commits on parallel tracks are
  85 *   sorted in the dates order.
  86 */
  87
  88typedef void (*topo_sort_set_fn_t)(struct commit*, void *data);
  89typedef void* (*topo_sort_get_fn_t)(struct commit*);
  90
  91void topo_sort_default_setter(struct commit *c, void *data);
  92void *topo_sort_default_getter(struct commit *c);
  93
  94void sort_in_topological_order(struct commit_list ** list, int lifo);
  95void sort_in_topological_order_fn(struct commit_list ** list, int lifo,
  96                                  topo_sort_set_fn_t setter,
  97                                  topo_sort_get_fn_t getter);
  98
  99struct commit_graft {
 100        unsigned char sha1[20];
 101        int nr_parent; /* < 0 if shallow commit */
 102        unsigned char parent[FLEX_ARRAY][20]; /* more */
 103};
 104
 105struct commit_graft *read_graft_line(char *buf, int len);
 106int register_commit_graft(struct commit_graft *, int);
 107int read_graft_file(const char *graft_file);
 108
 109extern struct commit_list *get_merge_bases(struct commit *rev1, struct commit *rev2, int cleanup);
 110
 111extern int register_shallow(const unsigned char *sha1);
 112extern int unregister_shallow(const unsigned char *sha1);
 113extern int write_shallow_commits(int fd, int use_pack_protocol);
 114extern int is_repository_shallow(void);
 115extern struct commit_list *get_shallow_commits(struct object_array *heads,
 116                int depth, int shallow_flag, int not_shallow_flag);
 117
 118int in_merge_bases(struct commit *, struct commit **, int);
 119#endif /* COMMIT_H */