#ifndef COMMIT_H

#define COMMIT_H

#include "object.h"

#include "tree.h"

#include "strbuf.h"

#include "decorate.h"

struct commit_list {

struct commit *item;

struct commit_list *next;

};

struct commit {

struct object object;

void *util;

unsigned int indegree;

unsigned long date;

struct commit_list *parents;

struct tree *tree;

char *buffer;

};

extern int save_commit_buffer;

extern const char *commit_type;

/* While we can decorate any object with a name, it's only used for commits.. */

extern struct decoration name_decoration;

struct name_decoration {

struct name_decoration *next;

int type;

char name[1];

};

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);

struct commit *lookup_commit_reference_by_name(const char *name);

int parse_commit_buffer(struct commit *item, void *buffer, unsigned long size);

int parse_commit(struct commit *item);

/* Find beginning and length of commit subject. */

int find_commit_subject(const char *commit_buffer, const char **subject);

struct commit_list * commit_list_insert(struct commit *item, struct commit_list **list_p);

unsigned commit_list_count(const struct commit_list *l);

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,

CMIT_FMT_EMAIL,

CMIT_FMT_USERFORMAT,

CMIT_FMT_UNSPECIFIED

};

struct pretty_print_context

{

int abbrev;

const char *subject;

const char *after_subject;

enum date_mode date_mode;

int need_8bit_cte;

int show_notes;

struct reflog_walk_info *reflog_info;

const char *output_encoding;

};

struct userformat_want {

unsigned notes:1;

};

extern int has_non_ascii(const char *text);

struct rev_info; /* in revision.h, it circularly uses enum cmit_fmt */

extern char *logmsg_reencode(const struct commit *commit,

const char *output_encoding);

extern char *reencode_commit_message(const struct commit *commit,

const char **encoding_p);

extern void get_commit_format(const char *arg, struct rev_info *);

extern void userformat_find_requirements(const char *fmt, struct userformat_want *w);

extern void format_commit_message(const struct commit *commit,

const char *format, struct strbuf *sb,

const struct pretty_print_context *context);

extern void pretty_print_commit(enum cmit_fmt fmt, const struct commit *commit,

struct strbuf *sb,

const struct pretty_print_context *context);

void pp_user_info(const char *what, enum cmit_fmt fmt, struct strbuf *sb,

const char *line, enum date_mode dmode,

const char *encoding);

void pp_title_line(enum cmit_fmt fmt,

const char **msg_p,

struct strbuf *sb,

const char *subject,

const char *after_subject,

const char *encoding,

int need_8bit_cte);

void pp_remainder(enum cmit_fmt fmt,

const char **msg_p,

struct strbuf *sb,

int indent);

/** 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);

/*

* Performs an in-place topological sort of list supplied.

*

* 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.

*/

void sort_in_topological_order(struct commit_list ** list, int lifo);

struct commit_graft {

unsigned char sha1[20];

int nr_parent; /* < 0 if shallow commit */

unsigned char parent[FLEX_ARRAY][20]; /* more */

};

struct commit_graft *read_graft_line(char *buf, int len);

int register_commit_graft(struct commit_graft *, int);

struct commit_graft *lookup_commit_graft(const unsigned char *sha1);

const unsigned char *lookup_replace_object(const unsigned char *sha1);

extern struct commit_list *get_merge_bases(struct commit *rev1, struct commit *rev2, int cleanup);

extern struct commit_list *get_merge_bases_many(struct commit *one, int n, struct commit **twos, int cleanup);

extern struct commit_list *get_octopus_merge_bases(struct commit_list *in);

extern int register_shallow(const unsigned char *sha1);

extern int unregister_shallow(const unsigned char *sha1);

extern int write_shallow_commits(struct strbuf *out, int use_pack_protocol);

extern int is_repository_shallow(void);

extern struct commit_list *get_shallow_commits(struct object_array *heads,

int depth, int shallow_flag, int not_shallow_flag);

int is_descendant_of(struct commit *, struct commit_list *);

int in_merge_bases(struct commit *, struct commit **, int);

int contains(struct commit *, const struct commit_list *);

extern int interactive_add(int argc, const char **argv, const char *prefix);

extern int run_add_interactive(const char *revision, const char *patch_mode,

const char **pathspec);

static inline int single_parent(struct commit *commit)

{

return commit->parents && !commit->parents->next;

}

struct commit_list *reduce_heads(struct commit_list *heads);

extern int commit_tree(const char *msg, unsigned char *tree,

struct commit_list *parents, unsigned char *ret,

const char *author);

#endif /* COMMIT_H */