summaryrefslogtreecommitdiff
path: root/ls-tree.c
blob: dae377d99585d4e6a176f85f0101d8ae29668f2f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
/*
 * GIT - The information manager from hell
 *
 * Copyright (C) Linus Torvalds, 2005
 */
#include "cache.h"
#include "blob.h"
#include "tree.h"
#include "quote.h"
 
static int line_termination = '\n';
#define LS_RECURSIVE 1
#define LS_TREE_ONLY 2
#define LS_SHOW_TREES 4
#define LS_NAME_ONLY 8
static int ls_options = 0;
const char **pathspec;
 
static const char ls_tree_usage[] =
	"git-ls-tree [-d] [-r] [-t] [-z] [--name-only] [--name-status] <tree-ish> [path...]";
 
static int show_recursive(const char *base, int baselen, const char *pathname)
{
	const char **s;
 
	if (ls_options & LS_RECURSIVE)
		return 1;
 
	s = pathspec;
	if (!s)
		return 0;
 
	for (;;) {
		const char *spec = *s++;
		int len, speclen;
 
		if (!spec)
			return 0;
		if (strncmp(base, spec, baselen))
			continue;
		len = strlen(pathname);
		spec += baselen;
		speclen = strlen(spec);
		if (speclen <= len)
			continue;
		if (memcmp(pathname, spec, len))
			continue;
		return 1;
	}
}
 
static int show_tree(unsigned char *sha1, const char *base, int baselen, const char *pathname, unsigned mode, int stage)
{
	int retval = 0;
	const char *type = "blob";
 
	if (S_ISDIR(mode)) {
		if (show_recursive(base, baselen, pathname)) {
			retval = READ_TREE_RECURSIVE;
			if (!(ls_options & LS_SHOW_TREES))
				return retval;
		}
		type = "tree";
	}
	else if (ls_options & LS_TREE_ONLY)
		return 0;
 
	if (!(ls_options & LS_NAME_ONLY))
		printf("%06o %s %s\t", mode, type, sha1_to_hex(sha1));
	write_name_quoted(base, baselen, pathname, line_termination, stdout);
	putchar(line_termination);
	return retval;
}
 
int main(int argc, const char **argv)
{
	const char *prefix;
	unsigned char sha1[20];
	char *buf;
	unsigned long size;
 
	prefix = setup_git_directory();
	while (1 < argc && argv[1][0] == '-') {
		switch (argv[1][1]) {
		case 'z':
			line_termination = 0;
			break;
		case 'r':
			ls_options |= LS_RECURSIVE;
			break;
		case 'd':
			ls_options |= LS_TREE_ONLY;
			break;
		case 't':
			ls_options |= LS_SHOW_TREES;
			break;
		case '-':
			if (!strcmp(argv[1]+2, "name-only") ||
			    !strcmp(argv[1]+2, "name-status")) {
				ls_options |= LS_NAME_ONLY;
				break;
			}
			/* otherwise fallthru */
		default:
			usage(ls_tree_usage);
		}
		argc--; argv++;
	}
	/* -d -r should imply -t, but -d by itself should not have to. */
	if ( (LS_TREE_ONLY|LS_RECURSIVE) ==
	    ((LS_TREE_ONLY|LS_RECURSIVE) & ls_options))
		ls_options |= LS_SHOW_TREES;
 
	if (argc < 2)
		usage(ls_tree_usage);
	if (get_sha1(argv[1], sha1) < 0)
		usage(ls_tree_usage);
 
	pathspec = get_pathspec(prefix, argv + 2);
	buf = read_object_with_reference(sha1, "tree", &size, NULL);
	if (!buf)
		die("not a tree object");
	read_tree_recursive(buf, size, "", 0, 0, pathspec, show_tree);
 
	return 0;
}