f4a75ddbc3fecb9c1690a94d39ce230e82fefd8d
[git/git.git] / builtin-ls-tree.c
1 /*
2 * GIT - The information manager from hell
3 *
4 * Copyright (C) Linus Torvalds, 2005
5 */
6 #include "cache.h"
7 #include "blob.h"
8 #include "tree.h"
9 #include "commit.h"
10 #include "quote.h"
11 #include "builtin.h"
12
13 static int line_termination = '\n';
14 #define LS_RECURSIVE 1
15 #define LS_TREE_ONLY 2
16 #define LS_SHOW_TREES 4
17 #define LS_NAME_ONLY 8
18 #define LS_SHOW_SIZE 16
19 static int abbrev;
20 static int ls_options;
21 static const char **pathspec;
22 static int chomp_prefix;
23 static const char *ls_tree_prefix;
24
25 static const char ls_tree_usage[] =
26 "git-ls-tree [-d] [-r] [-t] [-l] [-z] [--name-only] [--name-status] [--full-name] [--abbrev[=<n>]] <tree-ish> [path...]";
27
28 static int show_recursive(const char *base, int baselen, const char *pathname)
29 {
30 const char **s;
31
32 if (ls_options & LS_RECURSIVE)
33 return 1;
34
35 s = pathspec;
36 if (!s)
37 return 0;
38
39 for (;;) {
40 const char *spec = *s++;
41 int len, speclen;
42
43 if (!spec)
44 return 0;
45 if (strncmp(base, spec, baselen))
46 continue;
47 len = strlen(pathname);
48 spec += baselen;
49 speclen = strlen(spec);
50 if (speclen <= len)
51 continue;
52 if (memcmp(pathname, spec, len))
53 continue;
54 return 1;
55 }
56 }
57
58 static int show_tree(const unsigned char *sha1, const char *base, int baselen,
59 const char *pathname, unsigned mode, int stage)
60 {
61 int retval = 0;
62 const char *type = blob_type;
63 unsigned long size;
64
65 if (S_ISGITLINK(mode)) {
66 /*
67 * Maybe we want to have some recursive version here?
68 *
69 * Something like:
70 *
71 if (show_subprojects(base, baselen, pathname)) {
72 if (fork()) {
73 chdir(base);
74 exec ls-tree;
75 }
76 waitpid();
77 }
78 *
79 * ..or similar..
80 */
81 type = commit_type;
82 } else if (S_ISDIR(mode)) {
83 if (show_recursive(base, baselen, pathname)) {
84 retval = READ_TREE_RECURSIVE;
85 if (!(ls_options & LS_SHOW_TREES))
86 return retval;
87 }
88 type = tree_type;
89 }
90 else if (ls_options & LS_TREE_ONLY)
91 return 0;
92
93 if (chomp_prefix &&
94 (baselen < chomp_prefix || memcmp(ls_tree_prefix, base, chomp_prefix)))
95 return 0;
96
97 if (!(ls_options & LS_NAME_ONLY)) {
98 if (ls_options & LS_SHOW_SIZE) {
99 if (!strcmp(type, blob_type)) {
100 sha1_object_info(sha1, &size);
101 printf("%06o %s %s %7lu\t", mode, type,
102 abbrev ? find_unique_abbrev(sha1, abbrev)
103 : sha1_to_hex(sha1),
104 size);
105 } else
106 printf("%06o %s %s %7c\t", mode, type,
107 abbrev ? find_unique_abbrev(sha1, abbrev)
108 : sha1_to_hex(sha1),
109 '-');
110 } else
111 printf("%06o %s %s\t", mode, type,
112 abbrev ? find_unique_abbrev(sha1, abbrev)
113 : sha1_to_hex(sha1));
114 }
115 write_name_quotedpfx(base + chomp_prefix, baselen - chomp_prefix,
116 pathname, stdout, line_termination);
117 return retval;
118 }
119
120 int cmd_ls_tree(int argc, const char **argv, const char *prefix)
121 {
122 unsigned char sha1[20];
123 struct tree *tree;
124
125 git_config(git_default_config, NULL);
126 ls_tree_prefix = prefix;
127 if (prefix && *prefix)
128 chomp_prefix = strlen(prefix);
129 while (1 < argc && argv[1][0] == '-') {
130 switch (argv[1][1]) {
131 case 'z':
132 line_termination = 0;
133 break;
134 case 'r':
135 ls_options |= LS_RECURSIVE;
136 break;
137 case 'd':
138 ls_options |= LS_TREE_ONLY;
139 break;
140 case 't':
141 ls_options |= LS_SHOW_TREES;
142 break;
143 case 'l':
144 ls_options |= LS_SHOW_SIZE;
145 break;
146 case '-':
147 if (!strcmp(argv[1]+2, "name-only") ||
148 !strcmp(argv[1]+2, "name-status")) {
149 ls_options |= LS_NAME_ONLY;
150 break;
151 }
152 if (!strcmp(argv[1]+2, "long")) {
153 ls_options |= LS_SHOW_SIZE;
154 break;
155 }
156 if (!strcmp(argv[1]+2, "full-name")) {
157 chomp_prefix = 0;
158 break;
159 }
160 if (!prefixcmp(argv[1]+2, "abbrev=")) {
161 abbrev = strtoul(argv[1]+9, NULL, 10);
162 if (abbrev && abbrev < MINIMUM_ABBREV)
163 abbrev = MINIMUM_ABBREV;
164 else if (abbrev > 40)
165 abbrev = 40;
166 break;
167 }
168 if (!strcmp(argv[1]+2, "abbrev")) {
169 abbrev = DEFAULT_ABBREV;
170 break;
171 }
172 /* otherwise fallthru */
173 default:
174 usage(ls_tree_usage);
175 }
176 argc--; argv++;
177 }
178 /* -d -r should imply -t, but -d by itself should not have to. */
179 if ( (LS_TREE_ONLY|LS_RECURSIVE) ==
180 ((LS_TREE_ONLY|LS_RECURSIVE) & ls_options))
181 ls_options |= LS_SHOW_TREES;
182
183 if (argc < 2)
184 usage(ls_tree_usage);
185 if (get_sha1(argv[1], sha1))
186 die("Not a valid object name %s", argv[1]);
187
188 pathspec = get_pathspec(prefix, argv + 2);
189 tree = parse_tree_indirect(sha1);
190 if (!tree)
191 die("not a tree object");
192 read_tree_recursive(tree, "", 0, 0, pathspec, show_tree);
193
194 return 0;
195 }