git/commit.h
Fredrik Kuivinen 6b6dcfc297 Make it possible to not clobber object.util in sort_in_topological_order (take 2)
Signed-off-by: Fredrik Kuivinen <freku045@student.liu.se>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-03-10 22:11:14 -08:00

94 lines
2.7 KiB
C

#ifndef COMMIT_H
#define COMMIT_H
#include "object.h"
#include "tree.h"
struct commit_list {
struct commit *item;
struct commit_list *next;
};
struct commit {
struct object object;
unsigned long date;
struct commit_list *parents;
struct tree *tree;
char *buffer;
};
extern int save_commit_buffer;
extern const char *commit_type;
struct commit *lookup_commit(const unsigned char *sha1);
struct commit *lookup_commit_reference(const unsigned char *sha1);
struct commit *lookup_commit_reference_gently(const unsigned char *sha1,
int quiet);
int parse_commit_buffer(struct commit *item, void *buffer, unsigned long size);
int parse_commit(struct commit *item);
struct commit_list * commit_list_insert(struct commit *item, struct commit_list **list_p);
struct commit_list * insert_by_date(struct commit *item, struct commit_list **list);
void free_commit_list(struct commit_list *list);
void sort_by_date(struct commit_list **list);
/* Commit formats */
enum cmit_fmt {
CMIT_FMT_RAW,
CMIT_FMT_MEDIUM,
CMIT_FMT_DEFAULT = CMIT_FMT_MEDIUM,
CMIT_FMT_SHORT,
CMIT_FMT_FULL,
CMIT_FMT_FULLER,
CMIT_FMT_ONELINE,
};
extern enum cmit_fmt get_commit_format(const char *arg);
extern unsigned long pretty_print_commit(enum cmit_fmt fmt, const struct commit *, unsigned long len, char *buf, unsigned long space, int abbrev);
/** Removes the first commit from a list sorted by date, and adds all
* of its parents.
**/
struct commit *pop_most_recent_commit(struct commit_list **list,
unsigned int mark);
struct commit *pop_commit(struct commit_list **stack);
void clear_commit_marks(struct commit *commit, unsigned int mark);
int count_parents(struct commit * commit);
/*
* Performs an in-place topological sort of list supplied.
*
* Pre-conditions for sort_in_topological_order:
* all commits in input list and all parents of those
* commits must have object.util == NULL
*
* Pre-conditions for sort_in_topological_order_fn:
* all commits in input list and all parents of those
* commits must have getter(commit) == NULL
*
* Post-conditions:
* invariant of resulting list is:
* a reachable from b => ord(b) < ord(a)
* in addition, when lifo == 0, commits on parallel tracks are
* sorted in the dates order.
*/
typedef void (*topo_sort_set_fn_t)(struct commit*, void *data);
typedef void* (*topo_sort_get_fn_t)(struct commit*);
void topo_sort_default_setter(struct commit *c, void *data);
void *topo_sort_default_getter(struct commit *c);
void sort_in_topological_order(struct commit_list ** list, int lifo);
void sort_in_topological_order_fn(struct commit_list ** list, int lifo,
topo_sort_set_fn_t setter,
topo_sort_get_fn_t getter);
#endif /* COMMIT_H */