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         CMIT_FMT_EMAIL,
  49
  50         CMIT_FMT_UNSPECIFIED,
  51 };
  52
  53 extern enum cmit_fmt get_commit_format(const char *arg);
  54 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);
  55
  56 /** Removes the first commit from a list sorted by date, and adds all
  57  * of its parents.
  58  **/
  59 struct commit *pop_most_recent_commit(struct commit_list **list,
  60                                       unsigned int mark);
  61
  62 struct commit *pop_commit(struct commit_list **stack);
  63
  64 void clear_commit_marks(struct commit *commit, unsigned int mark);
  65
  66 int count_parents(struct commit * commit);
  67
  68 /*
  69  * Performs an in-place topological sort of list supplied.
  70  *
  71  * Pre-conditions for sort_in_topological_order:
  72  *   all commits in input list and all parents of those
  73  *   commits must have object.util == NULL
  74  *
  75  * Pre-conditions for sort_in_topological_order_fn:
  76  *   all commits in input list and all parents of those
  77  *   commits must have getter(commit) == NULL
  78  *
  79  * Post-conditions:
  80  *   invariant of resulting list is:
  81  *      a reachable from b => ord(b) < ord(a)
  82  *   in addition, when lifo == 0, commits on parallel tracks are
  83  *   sorted in the dates order.
  84  */
  85
  86 typedef void (*topo_sort_set_fn_t)(struct commit*, void *data);
  87 typedef void* (*topo_sort_get_fn_t)(struct commit*);
  88
  89 void topo_sort_default_setter(struct commit *c, void *data);
  90 void *topo_sort_default_getter(struct commit *c);
  91
  92 void sort_in_topological_order(struct commit_list ** list, int lifo);
  93 void sort_in_topological_order_fn(struct commit_list ** list, int lifo,
  94                                   topo_sort_set_fn_t setter,
  95                                   topo_sort_get_fn_t getter);
  96
  97 struct commit_graft {
  98         unsigned char sha1[20];
  99         int nr_parent;
 100         unsigned char parent[FLEX_ARRAY][20]; /* more */
 101 };
 102
 103 struct commit_graft *read_graft_line(char *buf, int len);
 104 int register_commit_graft(struct commit_graft *, int);
 105 int read_graft_file(const char *graft_file);
 106
 107 #endif /* COMMIT_H */