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#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 const char *commit_type;
struct commit *lookup_commit(const unsigned char *sha1);
struct commit *lookup_commit_reference(const unsigned char *sha1);
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_ONELINE,
};
extern enum cmit_fmt get_commit_format(const char *arg);
extern unsigned long pretty_print_commit(enum cmit_fmt fmt, const char *msg, unsigned long len, char *buf, unsigned long space);
/** 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);
int count_parents(struct commit * commit);
/*
* Performs an in-place topological sort of list supplied.
*
* Pre-conditions:
* all commits in input list and all parents of those
* commits must have object.util == NULL
*
* Post-conditions:
* invariant of resulting list is:
* a reachable from b => ord(b) < ord(a)
*/
void sort_in_topological_order(struct commit_list ** list);
#endif /* COMMIT_H */
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