commit.h

   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
   9 struct commit_list {
  10         struct commit *item;
  11         struct commit_list *next;
  12 };
  13
  14 struct commit {
  15         struct object object;
  16         void *util;
  17         unsigned int indegree;
  18         unsigned long date;
  19         struct commit_list *parents;
  20         struct tree *tree;
  21         char *buffer;
  22 };
  23
  24 extern int save_commit_buffer;
  25 extern const char *commit_type;
  26
  27 /* While we can decorate any object with a name, it's only used for commits.. */
  28 extern struct decoration name_decoration;
  29 struct name_decoration {
  30         struct name_decoration *next;
  31         char name[1];
  32 };
  33
  34 struct commit *lookup_commit(const unsigned char *sha1);
  35 struct commit *lookup_commit_reference(const unsigned char *sha1);
  36 struct commit *lookup_commit_reference_gently(const unsigned char *sha1,
  37                                               int quiet);
  38
  39 int parse_commit_buffer(struct commit *item, void *buffer, unsigned long size);
  40
  41 int parse_commit(struct commit *item);
  42
  43 /* Find beginning and length of commit subject. */
  44 int find_commit_subject(const char *commit_buffer, const char **subject);
  45
  46 struct commit_list * commit_list_insert(struct commit *item, struct commit_list **list_p);
  47 unsigned commit_list_count(const struct commit_list *l);
  48 struct commit_list * insert_by_date(struct commit *item, struct commit_list **list);
  49
  50 void free_commit_list(struct commit_list *list);
  51
  52 void sort_by_date(struct commit_list **list);
  53
  54 /* Commit formats */
  55 enum cmit_fmt {
  56         CMIT_FMT_RAW,
  57         CMIT_FMT_MEDIUM,
  58         CMIT_FMT_DEFAULT = CMIT_FMT_MEDIUM,
  59         CMIT_FMT_SHORT,
  60         CMIT_FMT_FULL,
  61         CMIT_FMT_FULLER,
  62         CMIT_FMT_ONELINE,
  63         CMIT_FMT_EMAIL,
  64         CMIT_FMT_USERFORMAT,
  65
  66         CMIT_FMT_UNSPECIFIED,
  67 };
  68
  69 struct pretty_print_context
  70 {
  71         int abbrev;
  72         const char *subject;
  73         const char *after_subject;
  74         enum date_mode date_mode;
  75         int need_8bit_cte;
  76         int show_notes;
  77         struct reflog_walk_info *reflog_info;
  78 };
  79
  80 struct userformat_want {
  81         unsigned notes:1;
  82 };
  83
  84 extern int has_non_ascii(const char *text);
  85 struct rev_info; /* in revision.h, it circularly uses enum cmit_fmt */
  86 extern char *reencode_commit_message(const struct commit *commit,
  87                                      const char **encoding_p);
  88 extern void get_commit_format(const char *arg, struct rev_info *);
  89 extern void userformat_find_requirements(const char *fmt, struct userformat_want *w);
  90 extern void format_commit_message(const struct commit *commit,
  91                                   const char *format, struct strbuf *sb,
  92                                   const struct pretty_print_context *context);
  93 extern void pretty_print_commit(enum cmit_fmt fmt, const struct commit *commit,
  94                                 struct strbuf *sb,
  95                                 const struct pretty_print_context *context);
  96 void pp_user_info(const char *what, enum cmit_fmt fmt, struct strbuf *sb,
  97                    const char *line, enum date_mode dmode,
  98                    const char *encoding);
  99 void pp_title_line(enum cmit_fmt fmt,
 100                    const char **msg_p,
 101                    struct strbuf *sb,
 102                    const char *subject,
 103                    const char *after_subject,
 104                    const char *encoding,
 105                    int need_8bit_cte);
 106 void pp_remainder(enum cmit_fmt fmt,
 107                   const char **msg_p,
 108                   struct strbuf *sb,
 109                   int indent);
 110
 111
 112 /** Removes the first commit from a list sorted by date, and adds all
 113  * of its parents.
 114  **/
 115 struct commit *pop_most_recent_commit(struct commit_list **list,
 116                                       unsigned int mark);
 117
 118 struct commit *pop_commit(struct commit_list **stack);
 119
 120 void clear_commit_marks(struct commit *commit, unsigned int mark);
 121
 122 /*
 123  * Performs an in-place topological sort of list supplied.
 124  *
 125  *   invariant of resulting list is:
 126  *      a reachable from b => ord(b) < ord(a)
 127  *   in addition, when lifo == 0, commits on parallel tracks are
 128  *   sorted in the dates order.
 129  */
 130 void sort_in_topological_order(struct commit_list ** list, int lifo);
 131
 132 struct commit_graft {
 133         unsigned char sha1[20];
 134         int nr_parent; /* < 0 if shallow commit */
 135         unsigned char parent[FLEX_ARRAY][20]; /* more */
 136 };
 137
 138 struct commit_graft *read_graft_line(char *buf, int len);
 139 int register_commit_graft(struct commit_graft *, int);
 140 struct commit_graft *lookup_commit_graft(const unsigned char *sha1);
 141
 142 const unsigned char *lookup_replace_object(const unsigned char *sha1);
 143
 144 extern struct commit_list *get_merge_bases(struct commit *rev1, struct commit *rev2, int cleanup);
 145 extern struct commit_list *get_merge_bases_many(struct commit *one, int n, struct commit **twos, int cleanup);
 146 extern struct commit_list *get_octopus_merge_bases(struct commit_list *in);
 147
 148 extern int register_shallow(const unsigned char *sha1);
 149 extern int unregister_shallow(const unsigned char *sha1);
 150 extern int write_shallow_commits(struct strbuf *out, int use_pack_protocol);
 151 extern int is_repository_shallow(void);
 152 extern struct commit_list *get_shallow_commits(struct object_array *heads,
 153                 int depth, int shallow_flag, int not_shallow_flag);
 154
 155 int is_descendant_of(struct commit *, struct commit_list *);
 156 int in_merge_bases(struct commit *, struct commit **, int);
 157
 158 extern int interactive_add(int argc, const char **argv, const char *prefix);
 159 extern int run_add_interactive(const char *revision, const char *patch_mode,
 160                                const char **pathspec);
 161
 162 static inline int single_parent(struct commit *commit)
 163 {
 164         return commit->parents && !commit->parents->next;
 165 }
 166
 167 struct commit_list *reduce_heads(struct commit_list *heads);
 168
 169 #endif /* COMMIT_H */