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 int save_commit_buffer;
  21 extern const char *commit_type;
  22
  23 struct commit *lookup_commit(const unsigned char *sha1);
  24 struct commit *lookup_commit_reference(const unsigned char *sha1);
  25 struct commit *lookup_commit_reference_gently(const unsigned char *sha1,
  26                                               int quiet);
  27
  28 int parse_commit_buffer(struct commit *item, void *buffer, unsigned long size);
  29
  30 int parse_commit(struct commit *item);
  31
  32 struct commit_list * commit_list_insert(struct commit *item, struct commit_list **list_p);
  33 struct commit_list * insert_by_date(struct commit *item, struct commit_list **list);
  34
  35 void free_commit_list(struct commit_list *list);
  36
  37 void sort_by_date(struct commit_list **list);
  38
  39 /* Commit formats */
  40 enum cmit_fmt {
  41         CMIT_FMT_RAW,
  42         CMIT_FMT_MEDIUM,
  43         CMIT_FMT_DEFAULT = CMIT_FMT_MEDIUM,
  44         CMIT_FMT_SHORT,
  45         CMIT_FMT_FULL,
  46         CMIT_FMT_FULLER,
  47         CMIT_FMT_ONELINE,
  48 };
  49
  50 extern enum cmit_fmt get_commit_format(const char *arg);
  51 extern unsigned long pretty_print_commit(enum cmit_fmt fmt, const struct commit *, unsigned long len, char *buf, unsigned long space, int abbrev);
  52
  53 /** Removes the first commit from a list sorted by date, and adds all
  54  * of its parents.
  55  **/
  56 struct commit *pop_most_recent_commit(struct commit_list **list,
  57                                       unsigned int mark);
  58
  59 struct commit *pop_commit(struct commit_list **stack);
  60
  61 void clear_commit_marks(struct commit *commit, unsigned int mark);
  62
  63 int count_parents(struct commit * commit);
  64
  65 /*
  66  * Performs an in-place topological sort of list supplied.
  67  *
  68  * Pre-conditions for sort_in_topological_order:
  69  *   all commits in input list and all parents of those
  70  *   commits must have object.util == NULL
  71  *
  72  * Pre-conditions for sort_in_topological_order_fn:
  73  *   all commits in input list and all parents of those
  74  *   commits must have getter(commit) == NULL
  75  *
  76  * Post-conditions:
  77  *   invariant of resulting list is:
  78  *      a reachable from b => ord(b) < ord(a)
  79  *   in addition, when lifo == 0, commits on parallel tracks are
  80  *   sorted in the dates order.
  81  */
  82
  83 typedef void (*topo_sort_set_fn_t)(struct commit*, void *data);
  84 typedef void* (*topo_sort_get_fn_t)(struct commit*);
  85
  86 void topo_sort_default_setter(struct commit *c, void *data);
  87 void *topo_sort_default_getter(struct commit *c);
  88
  89 void sort_in_topological_order(struct commit_list ** list, int lifo);
  90 void sort_in_topological_order_fn(struct commit_list ** list, int lifo,
  91                                   topo_sort_set_fn_t setter,
  92                                   topo_sort_get_fn_t getter);
  93 #endif /* COMMIT_H */