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, int relative_date);
  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; /* < 0 if shallow commit */
 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 extern int register_shallow(const unsigned char *sha1);
 111 extern int unregister_shallow(const unsigned char *sha1);
 112 extern int write_shallow_commits(int fd, int use_pack_protocol);
 113 extern int is_repository_shallow();
 114 extern struct commit_list *get_shallow_commits(struct object_array *heads,
 115                 int depth, int shallow_flag, int not_shallow_flag);
 116
 117 int in_merge_bases(struct commit *rev1, struct commit *rev2);
 118 #endif /* COMMIT_H */