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chromium / external / github.com / git / git / refs/tags/v1.6.4 / . / blob.c
blob: bd7d078e1ae5fe4ce0a16fda62a2c1743237941b [file] [log] [blame]
Daniel Barkalow175785e2005-04-18 18:39:48[diff] [blame]1#include "cache.h"
Junio C Hamano8f1d2e62006-01-07 09:33:54[diff] [blame]2#include "blob.h"
Daniel Barkalow175785e2005-04-18 18:39:48[diff] [blame]3
4const char *blob_type = "blob";
5
Jason McMullan5d6ccf52005-06-03 15:05:39[diff] [blame]6struct blob *lookup_blob(const unsigned char *sha1)
Daniel Barkalow175785e2005-04-18 18:39:48[diff] [blame]7{
8 struct object *obj = lookup_object(sha1);
Linus Torvalds100c5f32007-04-17 05:11:43[diff] [blame]9 if (!obj)
10 return create_object(sha1, OBJ_BLOB, alloc_blob_node());
Nicolas Pitred1af0022005-05-20 20:59:17[diff] [blame]11 if (!obj->type)
Linus Torvalds19746322006-07-12 03:45:31[diff] [blame]12 obj->type = OBJ_BLOB;
13 if (obj->type != OBJ_BLOB) {
Linus Torvalds885a86a2006-06-14 23:45:13[diff] [blame]14 error("Object %s is a %s, not a blob",
15 sha1_to_hex(sha1), typename(obj->type));
Daniel Barkalow175785e2005-04-18 18:39:48[diff] [blame]16 return NULL;
17 }
18 return (struct blob *) obj;
19}
Daniel Barkalowa510bfa2005-04-28 14:46:33[diff] [blame]20
Nicolas Pitrebd2c39f2005-05-06 17:48:34[diff] [blame]21int parse_blob_buffer(struct blob *item, void *buffer, unsigned long size)
22{
23 item->object.parsed = 1;
24 return 0;
25}
26
Daniel Barkalowa510bfa2005-04-28 14:46:33[diff] [blame]27int parse_blob(struct blob *item)
28{
Nicolas Pitre21666f12007-02-26 19:55:59[diff] [blame]29 enum object_type type;
Daniel Barkalowa510bfa2005-04-28 14:46:33[diff] [blame]30 void *buffer;
31 unsigned long size;
Nicolas Pitrebd2c39f2005-05-06 17:48:34[diff] [blame]32 int ret;
33
Daniel Barkalowa510bfa2005-04-28 14:46:33[diff] [blame]34 if (item->object.parsed)
35 return 0;
Nicolas Pitre21666f12007-02-26 19:55:59[diff] [blame]36 buffer = read_sha1_file(item->object.sha1, &type, &size);
Daniel Barkalowa510bfa2005-04-28 14:46:33[diff] [blame]37 if (!buffer)
38 return error("Could not read %s",
39 sha1_to_hex(item->object.sha1));
Nicolas Pitre21666f12007-02-26 19:55:59[diff] [blame]40 if (type != OBJ_BLOB)
Daniel Barkalowa510bfa2005-04-28 14:46:33[diff] [blame]41 return error("Object %s not a blob",
42 sha1_to_hex(item->object.sha1));
Nicolas Pitrebd2c39f2005-05-06 17:48:34[diff] [blame]43 ret = parse_blob_buffer(item, buffer, size);
44 free(buffer);
45 return ret;
Daniel Barkalowa510bfa2005-04-28 14:46:33[diff] [blame]46}