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