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Implement some of the basic git_odb open and close API

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Far from being complete, but its a good start.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
This commit is contained in:
Shawn O. Pearce 2008-11-03 18:39:37 -08:00
parent 2dbdb824f0
commit 1699efc421
2 changed files with 61 additions and 8 deletions
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9
include/git/odb.h
View File

@ -54,9 +54,8 @@ GIT_EXTERN(int) git_odb_open(git_odb **out, const char *objects_dir);
/**
* Close an open object database.
* @param db database pointer to close. If NULL no action is taken.
* The pointer is set to NULL when the close is completed.
*/
GIT_EXTERN(void) git_odb_close(git_odb **db);
GIT_EXTERN(void) git_odb_close(git_odb *db);
/** Basic type (loose or packed) of any Git object. */
typedef enum {
@ -129,7 +128,11 @@ GIT_EXTERN(int) git_odb__read_loose(git_sobj *out, git_odb *db, const git_oid *i
*
* @param obj object descriptor to free.
*/
GIT_EXTERN(void) git_sobj_close(git_sobj *obj);
GIT_INLINE(void) git_sobj_close(git_sobj *obj)
{
free(obj->data);
obj->data = NULL;
}
/** @} */
GIT_END_DECL

60
src/odb.c
View File

@ -27,21 +27,71 @@
struct git_odb {
/** Path to the "objects" directory. */
const char *path;
char *path;
/** Alternate databases to search. */
git_odb **alternates;
/** Number of alternates available. */
unsigned n_alternates;
};
static int open_alternates(git_odb *db)
{
unsigned n = 0;
db->alternates = malloc(sizeof(*db->alternates) * (n + 1));
if (!db->alternates)
return GIT_ERROR;
db->alternates[n] = NULL;
return GIT_SUCCESS;
}
int git_odb_open(git_odb **out, const char *objects_dir)
{
git_odb *db = malloc(sizeof(*db));
if (!db)
return GIT_ERROR;
db->path = strdup(objects_dir);
if (!db->path) {
free(db);
return GIT_ERROR;
}
db->alternates = NULL;
*out = db;
return GIT_SUCCESS;
}
void git_odb_close(git_odb *db)
{
if (!db)
return;
if (db->alternates) {
git_odb **alt;
for (alt = db->alternates; *alt; alt++)
git_odb_close(*alt);
free(db->alternates);
}
free(db->path);
free(db);
}
int git_odb_read(
git_sobj *out,
git_odb *db,
const git_oid *id)
{
attempt:
if (!git_odb__read_packed(out, db, id))
return GIT_SUCCESS;
return git_odb__read_loose(out, db, id);
if (!git_odb__read_loose(out, db, id))
return GIT_SUCCESS;
if (!db->alternates && !open_alternates(db))
goto attempt;
out->data = NULL;
return GIT_ENOTFOUND;
}