1/* ui-blob.c: show blob content
 2 *
 3 * Copyright (C) 2008 Lars Hjemli
 4 *
 5 * Licensed under GNU General Public License v2
 6 *   (see COPYING for full license text)
 7 */
 8
 9#include "cgit.h"
10#include "html.h"
11#include "ui-shared.h"
12
13static char *match_path;
14static unsigned char *matched_sha1;
15
16static int walk_tree(const unsigned char *sha1, const char *base,int baselen, const char *pathname, unsigned mode, int stage) {
17	if(strncmp(base,match_path,baselen)
18		|| strcmp(match_path+baselen,pathname) )
19		return READ_TREE_RECURSIVE;
20	memmove(matched_sha1,sha1,20);
21	return 0;
22}
23
24void cgit_print_blob(const char *hex, char *path, const char *head)
25{
26
27	unsigned char sha1[20];
28	enum object_type type;
29	unsigned char *buf;
30	unsigned long size;
31	struct commit *commit;
32	const char *paths[] = {path, NULL};
33
34	if (hex) {
35		if (get_sha1_hex(hex, sha1)){
36			cgit_print_error(fmt("Bad hex value: %s", hex));
37			return;
38		}
39	} else {
40		if (get_sha1(head,sha1)) {
41			cgit_print_error(fmt("Bad ref: %s", head));
42			return;
43		}
44	}
45
46	type = sha1_object_info(sha1, &size);
47
48	if((!hex) && type == OBJ_COMMIT && path) {
49		commit = lookup_commit_reference(sha1);
50		match_path = path;
51		matched_sha1 = sha1;
52		read_tree_recursive(commit->tree, NULL, 0, 0, paths, walk_tree);
53		type = sha1_object_info(sha1,&size);
54	}
55
56	if (type == OBJ_BAD) {
57		cgit_print_error(fmt("Bad object name: %s", hex));
58		return;
59	}
60
61	buf = read_sha1_file(sha1, &type, &size);
62	if (!buf) {
63		cgit_print_error(fmt("Error reading object %s", hex));
64		return;
65	}
66
67	buf[size] = '\0';
68	ctx.page.mimetype = ctx.qry.mimetype;
69	ctx.page.filename = path;
70	cgit_print_http_headers(&ctx);
71	write(htmlfd, buf, size);
72}