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[PATCH] Parse tags for absent objects

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Handle parsing a tag for a non-present object. This adds a function to lookup
an object with lookup_* for * in a string, so that it can get the right storage
based on the "type" line in the tag.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Daniel Barkalow 2005-06-21 20:35:10 -04:00 committed by Linus Torvalds
parent 9661c25640
commit 89e4202f98
3 changed files with 27 additions and 4 deletions
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16
object.c
View file

@ -98,6 +98,22 @@ void mark_reachable(struct object *obj, unsigned int mask)
}
}
struct object *lookup_object_type(const unsigned char *sha1, const char *type)
{
if (!strcmp(type, blob_type)) {
return &lookup_blob(sha1)->object;
} else if (!strcmp(type, tree_type)) {
return &lookup_tree(sha1)->object;
} else if (!strcmp(type, commit_type)) {
return &lookup_commit(sha1)->object;
} else if (!strcmp(type, tag_type)) {
return &lookup_tag(sha1)->object;
} else {
error("Unknown type %s", type);
return NULL;
}
}
struct object *parse_object(const unsigned char *sha1)
{
unsigned long mapsize;

4
object.h
View file

@ -21,8 +21,12 @@ struct object {
extern int nr_objs;
extern struct object **objs;
/** Internal only **/
struct object *lookup_object(const unsigned char *sha1);
/** Returns the object, having looked it up as being the given type. **/
struct object *lookup_object_type(const unsigned char *sha1, const char *type);
void created_object(const unsigned char *sha1, struct object *obj);
/** Returns the object, having parsed it to find out what it is. **/

11
tag.c
View file

@ -28,6 +28,7 @@ int parse_tag_buffer(struct tag *item, void *data, unsigned long size)
int typelen, taglen;
unsigned char object[20];
const char *type_line, *tag_line, *sig_line;
char type[20];
if (item->object.parsed)
return 0;
@ -38,10 +39,6 @@ int parse_tag_buffer(struct tag *item, void *data, unsigned long size)
if (memcmp("object ", data, 7) || get_sha1_hex(data + 7, object))
return -1;
item->tagged = parse_object(object);
if (item->tagged)
add_ref(&item->object, item->tagged);
type_line = data + 48;
if (memcmp("\ntype ", type_line-1, 6))
return -1;
@ -58,11 +55,17 @@ int parse_tag_buffer(struct tag *item, void *data, unsigned long size)
typelen = tag_line - type_line - strlen("type \n");
if (typelen >= 20)
return -1;
memcpy(type, type_line + 5, typelen);
type[typelen] = '\0';
taglen = sig_line - tag_line - strlen("tag \n");
item->tag = xmalloc(taglen + 1);
memcpy(item->tag, tag_line + 4, taglen);
item->tag[taglen] = '\0';
item->tagged = lookup_object_type(object, type);
if (item->tagged)
add_ref(&item->object, item->tagged);
return 0;
}