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blame: move origin-related methods to libgit 

Signed-off-by: Jeff Smith <whydoubt@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff Smith 2017-05-24 00:15:33 -05:00 committed by Junio C Hamano
parent dc076ae5d9
commit f5dd754c36
4 changed files with 78 additions and 72 deletions
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1
Makefile
View File

@ -718,6 +718,7 @@ LIB_OBJS += argv-array.o
LIB_OBJS += attr.o
LIB_OBJS += base85.o
LIB_OBJS += bisect.o
LIB_OBJS += blame.o
LIB_OBJS += blob.o
LIB_OBJS += branch.o
LIB_OBJS += bulk-checkin.o

62
blame.c Normal file
View File

@ -0,0 +1,62 @@
#include "blame.h"
void blame_origin_decref(struct blame_origin *o)
{
if (o && --o->refcnt <= 0) {
struct blame_origin *p, *l = NULL;
if (o->previous)
blame_origin_decref(o->previous);
free(o->file.ptr);
/* Should be present exactly once in commit chain */
for (p = o->commit->util; p; l = p, p = p->next) {
if (p == o) {
if (l)
l->next = p->next;
else
o->commit->util = p->next;
free(o);
return;
}
}
die("internal error in blame_origin_decref");
}
}
/*
* Given a commit and a path in it, create a new origin structure.
* The callers that add blame to the scoreboard should use
* get_origin() to obtain shared, refcounted copy instead of calling
* this function directly.
*/
struct blame_origin *make_origin(struct commit *commit, const char *path)
{
struct blame_origin *o;
FLEX_ALLOC_STR(o, path, path);
o->commit = commit;
o->refcnt = 1;
o->next = commit->util;
commit->util = o;
return o;
}
/*
* Locate an existing origin or create a new one.
* This moves the origin to front position in the commit util list.
*/
struct blame_origin *get_origin(struct commit *commit, const char *path)
{
struct blame_origin *o, *l;
for (o = commit->util, l = NULL; o; l = o, o = o->next) {
if (!strcmp(o->path, path)) {
/* bump to front */
if (l) {
l->next = o->next;
o->next = commit->util;
commit->util = o;
}
return blame_origin_incref(o);
}
}
return make_origin(commit, path);
}

15
blame.h
View File

@ -140,4 +140,19 @@ struct blame_scoreboard {
void *found_guilty_entry_data;
};
/*
* Origin is refcounted and usually we keep the blob contents to be
* reused.
*/
static inline struct blame_origin *blame_origin_incref(struct blame_origin *o)
{
if (o)
o->refcnt++;
return o;
}
extern void blame_origin_decref(struct blame_origin *o);
extern struct blame_origin *make_origin(struct commit *commit, const char *path);
extern struct blame_origin *get_origin(struct commit *commit, const char *path);
#endif /* BLAME_H */

72
builtin/blame.c
View File

@ -124,39 +124,6 @@ static void fill_origin_blob(struct diff_options *opt,
*file = o->file;
}
/*
* Origin is refcounted and usually we keep the blob contents to be
* reused.
*/
static inline struct blame_origin *blame_origin_incref(struct blame_origin *o)
{
if (o)
o->refcnt++;
return o;
}
static void blame_origin_decref(struct blame_origin *o)
{
if (o && --o->refcnt <= 0) {
struct blame_origin *p, *l = NULL;
if (o->previous)
blame_origin_decref(o->previous);
free(o->file.ptr);
/* Should be present exactly once in commit chain */
for (p = o->commit->util; p; l = p, p = p->next) {
if (p == o) {
if (l)
l->next = p->next;
else
o->commit->util = p->next;
free(o);
return;
}
}
die("internal error in blame_origin_decref");
}
}
static void drop_origin_blob(struct blame_origin *o)
{
if (o->file.ptr) {
@ -315,45 +282,6 @@ static void queue_blames(struct blame_scoreboard *sb, struct blame_origin *porig
}
}
/*
* Given a commit and a path in it, create a new origin structure.
* The callers that add blame to the scoreboard should use
* get_origin() to obtain shared, refcounted copy instead of calling
* this function directly.
*/
static struct blame_origin *make_origin(struct commit *commit, const char *path)
{
struct blame_origin *o;
FLEX_ALLOC_STR(o, path, path);
o->commit = commit;
o->refcnt = 1;
o->next = commit->util;
commit->util = o;
return o;
}
/*
* Locate an existing origin or create a new one.
* This moves the origin to front position in the commit util list.
*/
static struct blame_origin *get_origin(struct commit *commit, const char *path)
{
struct blame_origin *o, *l;
for (o = commit->util, l = NULL; o; l = o, o = o->next) {
if (!strcmp(o->path, path)) {
/* bump to front */
if (l) {
l->next = o->next;
o->next = commit->util;
commit->util = o;
}
return blame_origin_incref(o);
}
}
return make_origin(commit, path);
}
/*
* Fill the blob_sha1 field of an origin if it hasn't, so that later
* call to fill_origin_blob() can use it to locate the data. blob_sha1