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         CMIT_FMT_USERFORMAT,
  51
  52         CMIT_FMT_UNSPECIFIED,
  53 };
  54
  55 extern enum cmit_fmt get_commit_format(const char *arg);
  56 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);
  57
  58 /** Removes the first commit from a list sorted by date, and adds all
  59  * of its parents.
  60  **/
  61 struct commit *pop_most_recent_commit(struct commit_list **list,
  62                                       unsigned int mark);
  63
  64 struct commit *pop_commit(struct commit_list **stack);
  65
  66 void clear_commit_marks(struct commit *commit, unsigned int mark);
  67
  68 int 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
  88 typedef void (*topo_sort_set_fn_t)(struct commit*, void *data);
  89 typedef void* (*topo_sort_get_fn_t)(struct commit*);
  90
  91 void topo_sort_default_setter(struct commit *c, void *data);
  92 void *topo_sort_default_getter(struct commit *c);
  93
  94 void sort_in_topological_order(struct commit_list ** list, int lifo);
  95 void 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
  99 struct 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
 105 struct commit_graft *read_graft_line(char *buf, int len);
 106 int register_commit_graft(struct commit_graft *, int);
 107 int read_graft_file(const char *graft_file);
 108
 109 extern struct commit_list *get_merge_bases(struct commit *rev1, struct commit *rev2, int cleanup);
 110
 111 extern int register_shallow(const unsigned char *sha1);
 112 extern int unregister_shallow(const unsigned char *sha1);
 113 extern int write_shallow_commits(int fd, int use_pack_protocol);
 114 extern int is_repository_shallow(void);
 115 extern struct commit_list *get_shallow_commits(struct object_array *heads,
 116                 int depth, int shallow_flag, int not_shallow_flag);
 117
 118 int in_merge_bases(struct commit *, struct commit **, int);
 119 #endif /* COMMIT_H */