diff --color-words: bit of clean-up
[git] / builtin-clean.c
1 /*
2  * "git clean" builtin command
3  *
4  * Copyright (C) 2007 Shawn Bohrer
5  *
6  * Based on git-clean.sh by Pavel Roskin
7  */
8
9 #include "builtin.h"
10 #include "cache.h"
11 #include "dir.h"
12 #include "parse-options.h"
13 #include "quote.h"
14
15 static int force = -1; /* unset */
16
17 static const char *const builtin_clean_usage[] = {
18         "git clean [-d] [-f] [-n] [-q] [-x | -X] [--] <paths>...",
19         NULL
20 };
21
22 static int git_clean_config(const char *var, const char *value, void *cb)
23 {
24         if (!strcmp(var, "clean.requireforce"))
25                 force = !git_config_bool(var, value);
26         return git_default_config(var, value, cb);
27 }
28
29 int cmd_clean(int argc, const char **argv, const char *prefix)
30 {
31         int i;
32         int show_only = 0, remove_directories = 0, quiet = 0, ignored = 0;
33         int ignored_only = 0, baselen = 0, config_set = 0, errors = 0;
34         int rm_flags = REMOVE_DIR_KEEP_NESTED_GIT;
35         struct strbuf directory = STRBUF_INIT;
36         struct dir_struct dir;
37         static const char **pathspec;
38         struct strbuf buf = STRBUF_INIT;
39         const char *qname;
40         char *seen = NULL;
41         struct option options[] = {
42                 OPT__QUIET(&quiet),
43                 OPT__DRY_RUN(&show_only),
44                 OPT_BOOLEAN('f', "force", &force, "force"),
45                 OPT_BOOLEAN('d', NULL, &remove_directories,
46                                 "remove whole directories"),
47                 OPT_BOOLEAN('x', NULL, &ignored, "remove ignored files, too"),
48                 OPT_BOOLEAN('X', NULL, &ignored_only,
49                                 "remove only ignored files"),
50                 OPT_END()
51         };
52
53         git_config(git_clean_config, NULL);
54         if (force < 0)
55                 force = 0;
56         else
57                 config_set = 1;
58
59         argc = parse_options(argc, argv, prefix, options, builtin_clean_usage,
60                              0);
61
62         memset(&dir, 0, sizeof(dir));
63         if (ignored_only)
64                 dir.flags |= DIR_SHOW_IGNORED;
65
66         if (ignored && ignored_only)
67                 die("-x and -X cannot be used together");
68
69         if (!show_only && !force)
70                 die("clean.requireForce%s set and -n or -f not given; "
71                     "refusing to clean", config_set ? "" : " not");
72
73         if (force > 1)
74                 rm_flags = 0;
75
76         dir.flags |= DIR_SHOW_OTHER_DIRECTORIES;
77
78         if (!ignored)
79                 setup_standard_excludes(&dir);
80
81         pathspec = get_pathspec(prefix, argv);
82         read_cache();
83
84         fill_directory(&dir, pathspec);
85
86         if (pathspec)
87                 seen = xmalloc(argc > 0 ? argc : 1);
88
89         for (i = 0; i < dir.nr; i++) {
90                 struct dir_entry *ent = dir.entries[i];
91                 int len, pos;
92                 int matches = 0;
93                 struct cache_entry *ce;
94                 struct stat st;
95
96                 /*
97                  * Remove the '/' at the end that directory
98                  * walking adds for directory entries.
99                  */
100                 len = ent->len;
101                 if (len && ent->name[len-1] == '/')
102                         len--;
103                 pos = cache_name_pos(ent->name, len);
104                 if (0 <= pos)
105                         continue;       /* exact match */
106                 pos = -pos - 1;
107                 if (pos < active_nr) {
108                         ce = active_cache[pos];
109                         if (ce_namelen(ce) == len &&
110                             !memcmp(ce->name, ent->name, len))
111                                 continue; /* Yup, this one exists unmerged */
112                 }
113
114                 /*
115                  * we might have removed this as part of earlier
116                  * recursive directory removal, so lstat() here could
117                  * fail with ENOENT.
118                  */
119                 if (lstat(ent->name, &st))
120                         continue;
121
122                 if (pathspec) {
123                         memset(seen, 0, argc > 0 ? argc : 1);
124                         matches = match_pathspec(pathspec, ent->name, len,
125                                                  baselen, seen);
126                 }
127
128                 if (S_ISDIR(st.st_mode)) {
129                         strbuf_addstr(&directory, ent->name);
130                         qname = quote_path_relative(directory.buf, directory.len, &buf, prefix);
131                         if (show_only && (remove_directories ||
132                             (matches == MATCHED_EXACTLY))) {
133                                 printf("Would remove %s\n", qname);
134                         } else if (remove_directories ||
135                                    (matches == MATCHED_EXACTLY)) {
136                                 if (!quiet)
137                                         printf("Removing %s\n", qname);
138                                 if (remove_dir_recursively(&directory,
139                                                            rm_flags) != 0) {
140                                         warning("failed to remove '%s'", qname);
141                                         errors++;
142                                 }
143                         } else if (show_only) {
144                                 printf("Would not remove %s\n", qname);
145                         } else {
146                                 printf("Not removing %s\n", qname);
147                         }
148                         strbuf_reset(&directory);
149                 } else {
150                         if (pathspec && !matches)
151                                 continue;
152                         qname = quote_path_relative(ent->name, -1, &buf, prefix);
153                         if (show_only) {
154                                 printf("Would remove %s\n", qname);
155                                 continue;
156                         } else if (!quiet) {
157                                 printf("Removing %s\n", qname);
158                         }
159                         if (unlink(ent->name) != 0) {
160                                 warning("failed to remove '%s'", qname);
161                                 errors++;
162                         }
163                 }
164         }
165         free(seen);
166
167         strbuf_release(&directory);
168         return (errors != 0);
169 }