#ifndef INCLUDE_blame_git__
#define INCLUDE_blame_git__
#include "git2.h"
#include "xdiff/xinclude.h"
#include "blame.h"
/*
* One blob in a commit that is being suspected
*/
struct origin {
int refcnt;
struct origin *previous;
git_commit *commit;
git_blob *blob;
char path[];
};
/*
* Each group of lines is described by a blame_entry; it can be split
* as we pass blame to the parents. They form a linked list in the
* scoreboard structure, sorted by the target line number.
*/
struct blame_entry {
struct blame_entry *prev;
struct blame_entry *next;
/* the first line of this group in the final image;
* internally all line numbers are 0 based.
*/
int lno;
/* how many lines this group has */
int num_lines;
/* the commit that introduced this group into the final image */
struct origin *suspect;
/* true if the suspect is truly guilty; false while we have not
* checked if the group came from one of its parents.
*/
char guilty;
/* true if the entry has been scanned for copies in the current parent
*/
char scanned;
/* the line number of the first line of this group in the
* suspect's file; internally all line numbers are 0 based.
*/
int s_lno;
/* how significant this entry is -- cached to avoid
* scanning the lines over and over.
*/
unsigned score;
};
/*
* The current state of the blame assignment.
*/
struct scoreboard {
/* the final commit (i.e. where we started digging from) */
git_commit *final;
const char *path;
/*
* The contents in the final image.
* Used by many functions to obtain contents of the nth line,
* indexed with scoreboard.lineno[blame_entry.lno].
*/
const char *final_buf;
git_off_t final_buf_size;
/* linked list of blames */
struct blame_entry *ent;
/* look-up a line in the final buffer */
int num_lines;
git_blame *blame;
};
int get_origin(struct origin **out, struct scoreboard *sb, git_commit *commit, const char *path);
int make_origin(struct origin **out, git_commit *commit, const char *path);
struct origin *origin_incref(struct origin *o);
void origin_decref(struct origin *o);
void assign_blame(struct scoreboard *sb, uint32_t flags);
void coalesce(struct scoreboard *sb);
#endif
