git svn info: tests: let 'init' test run with SVN 1.5
[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, void *context)
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 similar to this incomplete example:
70                  *
71                 if (show_subprojects(base, baselen, pathname)) {
72                         struct child_process ls_tree;
73
74                         ls_tree.dir = base;
75                         ls_tree.argv = ls-tree;
76                         start_command(&ls_tree);
77                 }
78                  *
79                  */
80                 type = commit_type;
81         } else if (S_ISDIR(mode)) {
82                 if (show_recursive(base, baselen, pathname)) {
83                         retval = READ_TREE_RECURSIVE;
84                         if (!(ls_options & LS_SHOW_TREES))
85                                 return retval;
86                 }
87                 type = tree_type;
88         }
89         else if (ls_options & LS_TREE_ONLY)
90                 return 0;
91
92         if (chomp_prefix &&
93             (baselen < chomp_prefix || memcmp(ls_tree_prefix, base, chomp_prefix)))
94                 return 0;
95
96         if (!(ls_options & LS_NAME_ONLY)) {
97                 if (ls_options & LS_SHOW_SIZE) {
98                         if (!strcmp(type, blob_type)) {
99                                 sha1_object_info(sha1, &size);
100                                 printf("%06o %s %s %7lu\t", mode, type,
101                                        abbrev ? find_unique_abbrev(sha1, abbrev)
102                                               : sha1_to_hex(sha1),
103                                        size);
104                         } else
105                                 printf("%06o %s %s %7c\t", mode, type,
106                                        abbrev ? find_unique_abbrev(sha1, abbrev)
107                                               : sha1_to_hex(sha1),
108                                        '-');
109                 } else
110                         printf("%06o %s %s\t", mode, type,
111                                abbrev ? find_unique_abbrev(sha1, abbrev)
112                                       : sha1_to_hex(sha1));
113         }
114         write_name_quotedpfx(base + chomp_prefix, baselen - chomp_prefix,
115                           pathname, stdout, line_termination);
116         return retval;
117 }
118
119 int cmd_ls_tree(int argc, const char **argv, const char *prefix)
120 {
121         unsigned char sha1[20];
122         struct tree *tree;
123
124         git_config(git_default_config, NULL);
125         ls_tree_prefix = prefix;
126         if (prefix && *prefix)
127                 chomp_prefix = strlen(prefix);
128         while (1 < argc && argv[1][0] == '-') {
129                 switch (argv[1][1]) {
130                 case 'z':
131                         line_termination = 0;
132                         break;
133                 case 'r':
134                         ls_options |= LS_RECURSIVE;
135                         break;
136                 case 'd':
137                         ls_options |= LS_TREE_ONLY;
138                         break;
139                 case 't':
140                         ls_options |= LS_SHOW_TREES;
141                         break;
142                 case 'l':
143                         ls_options |= LS_SHOW_SIZE;
144                         break;
145                 case '-':
146                         if (!strcmp(argv[1]+2, "name-only") ||
147                             !strcmp(argv[1]+2, "name-status")) {
148                                 ls_options |= LS_NAME_ONLY;
149                                 break;
150                         }
151                         if (!strcmp(argv[1]+2, "long")) {
152                                 ls_options |= LS_SHOW_SIZE;
153                                 break;
154                         }
155                         if (!strcmp(argv[1]+2, "full-name")) {
156                                 chomp_prefix = 0;
157                                 break;
158                         }
159                         if (!prefixcmp(argv[1]+2, "abbrev=")) {
160                                 abbrev = strtoul(argv[1]+9, NULL, 10);
161                                 if (abbrev && abbrev < MINIMUM_ABBREV)
162                                         abbrev = MINIMUM_ABBREV;
163                                 else if (abbrev > 40)
164                                         abbrev = 40;
165                                 break;
166                         }
167                         if (!strcmp(argv[1]+2, "abbrev")) {
168                                 abbrev = DEFAULT_ABBREV;
169                                 break;
170                         }
171                         /* otherwise fallthru */
172                 default:
173                         usage(ls_tree_usage);
174                 }
175                 argc--; argv++;
176         }
177         /* -d -r should imply -t, but -d by itself should not have to. */
178         if ( (LS_TREE_ONLY|LS_RECURSIVE) ==
179             ((LS_TREE_ONLY|LS_RECURSIVE) & ls_options))
180                 ls_options |= LS_SHOW_TREES;
181
182         if (argc < 2)
183                 usage(ls_tree_usage);
184         if (get_sha1(argv[1], sha1))
185                 die("Not a valid object name %s", argv[1]);
186
187         pathspec = get_pathspec(prefix, argv + 2);
188         tree = parse_tree_indirect(sha1);
189         if (!tree)
190                 die("not a tree object");
191         read_tree_recursive(tree, "", 0, 0, pathspec, show_tree, NULL);
192
193         return 0;
194 }