bash: teach 'git reset --patch'
[git/spearce.git] / blob.c
blobbd7d078e1ae5fe4ce0a16fda62a2c1743237941b
1 #include "cache.h"
2 #include "blob.h"
4 const char *blob_type = "blob";
6 struct blob *lookup_blob(const unsigned char *sha1)
8 struct object *obj = lookup_object(sha1);
9 if (!obj)
10 return create_object(sha1, OBJ_BLOB, alloc_blob_node());
11 if (!obj->type)
12 obj->type = OBJ_BLOB;
13 if (obj->type != OBJ_BLOB) {
14 error("Object %s is a %s, not a blob",
15 sha1_to_hex(sha1), typename(obj->type));
16 return NULL;
18 return (struct blob *) obj;
21 int parse_blob_buffer(struct blob *item, void *buffer, unsigned long size)
23 item->object.parsed = 1;
24 return 0;
27 int parse_blob(struct blob *item)
29 enum object_type type;
30 void *buffer;
31 unsigned long size;
32 int ret;
34 if (item->object.parsed)
35 return 0;
36 buffer = read_sha1_file(item->object.sha1, &type, &size);
37 if (!buffer)
38 return error("Could not read %s",
39 sha1_to_hex(item->object.sha1));
40 if (type != OBJ_BLOB)
41 return error("Object %s not a blob",
42 sha1_to_hex(item->object.sha1));
43 ret = parse_blob_buffer(item, buffer, size);
44 free(buffer);
45 return ret;