Andrew's git - gitweb.git/blob

   1#ifndef COMMIT_H
   2#define COMMIT_H
   3
   4#include "object.h"
   5#include "tree.h"
   6#include "strbuf.h"
   7#include "decorate.h"
   8
   9struct commit_list {
  10        struct commit *item;
  11        struct commit_list *next;
  12};
  13
  14struct commit {
  15        struct object object;
  16        void *util;
  17        unsigned long date;
  18        struct commit_list *parents;
  19        struct tree *tree;
  20        char *buffer;
  21};
  22
  23extern int save_commit_buffer;
  24extern const char *commit_type;
  25
  26/* While we can decorate any object with a name, it's only used for commits.. */
  27extern struct decoration name_decoration;
  28struct name_decoration {
  29        struct name_decoration *next;
  30        char name[1];
  31};
  32
  33struct commit *lookup_commit(const unsigned char *sha1);
  34struct commit *lookup_commit_reference(const unsigned char *sha1);
  35struct commit *lookup_commit_reference_gently(const unsigned char *sha1,
  36                                              int quiet);
  37
  38int parse_commit_buffer(struct commit *item, void *buffer, unsigned long size);
  39
  40int parse_commit(struct commit *item);
  41
  42struct commit_list * commit_list_insert(struct commit *item, struct commit_list **list_p);
  43struct commit_list * insert_by_date(struct commit *item, struct commit_list **list);
  44
  45void free_commit_list(struct commit_list *list);
  46
  47void sort_by_date(struct commit_list **list);
  48
  49/* Commit formats */
  50enum cmit_fmt {
  51        CMIT_FMT_RAW,
  52        CMIT_FMT_MEDIUM,
  53        CMIT_FMT_DEFAULT = CMIT_FMT_MEDIUM,
  54        CMIT_FMT_SHORT,
  55        CMIT_FMT_FULL,
  56        CMIT_FMT_FULLER,
  57        CMIT_FMT_ONELINE,
  58        CMIT_FMT_EMAIL,
  59        CMIT_FMT_USERFORMAT,
  60
  61        CMIT_FMT_UNSPECIFIED,
  62};
  63
  64extern enum cmit_fmt get_commit_format(const char *arg);
  65extern void format_commit_message(const struct commit *commit,
  66                                  const void *format, struct strbuf *sb);
  67extern void pretty_print_commit(enum cmit_fmt fmt, const struct commit*,
  68                                struct strbuf *,
  69                                int abbrev, const char *subject,
  70                                const char *after_subject, enum date_mode);
  71
  72/** Removes the first commit from a list sorted by date, and adds all
  73 * of its parents.
  74 **/
  75struct commit *pop_most_recent_commit(struct commit_list **list,
  76                                      unsigned int mark);
  77
  78struct commit *pop_commit(struct commit_list **stack);
  79
  80void clear_commit_marks(struct commit *commit, unsigned int mark);
  81
  82/*
  83 * Performs an in-place topological sort of list supplied.
  84 *
  85 * Pre-conditions for sort_in_topological_order:
  86 *   all commits in input list and all parents of those
  87 *   commits must have object.util == NULL
  88 *
  89 * Pre-conditions for sort_in_topological_order_fn:
  90 *   all commits in input list and all parents of those
  91 *   commits must have getter(commit) == NULL
  92 *
  93 * Post-conditions:
  94 *   invariant of resulting list is:
  95 *      a reachable from b => ord(b) < ord(a)
  96 *   in addition, when lifo == 0, commits on parallel tracks are
  97 *   sorted in the dates order.
  98 */
  99
 100typedef void (*topo_sort_set_fn_t)(struct commit*, void *data);
 101typedef void* (*topo_sort_get_fn_t)(struct commit*);
 102
 103void topo_sort_default_setter(struct commit *c, void *data);
 104void *topo_sort_default_getter(struct commit *c);
 105
 106void sort_in_topological_order(struct commit_list ** list, int lifo);
 107void sort_in_topological_order_fn(struct commit_list ** list, int lifo,
 108                                  topo_sort_set_fn_t setter,
 109                                  topo_sort_get_fn_t getter);
 110
 111struct commit_graft {
 112        unsigned char sha1[20];
 113        int nr_parent; /* < 0 if shallow commit */
 114        unsigned char parent[FLEX_ARRAY][20]; /* more */
 115};
 116
 117struct commit_graft *read_graft_line(char *buf, int len);
 118int register_commit_graft(struct commit_graft *, int);
 119int read_graft_file(const char *graft_file);
 120
 121extern struct commit_list *get_merge_bases(struct commit *rev1, struct commit *rev2, int cleanup);
 122
 123extern int register_shallow(const unsigned char *sha1);
 124extern int unregister_shallow(const unsigned char *sha1);
 125extern int write_shallow_commits(int fd, int use_pack_protocol);
 126extern int is_repository_shallow(void);
 127extern struct commit_list *get_shallow_commits(struct object_array *heads,
 128                int depth, int shallow_flag, int not_shallow_flag);
 129
 130int in_merge_bases(struct commit *, struct commit **, int);
 131#endif /* COMMIT_H */