Code

Introduce an unlink(2) wrapper which gives warning if unlink failed
[git.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  */
9 #include "builtin.h"
10 #include "cache.h"
11 #include "dir.h"
12 #include "parse-options.h"
13 #include "quote.h"
15 static int force = -1; /* unset */
17 static const char *const builtin_clean_usage[] = {
18         "git clean [-d] [-f] [-n] [-q] [-x | -X] [--] <paths>...",
19         NULL
20 };
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 }
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         struct strbuf directory = STRBUF_INIT;
35         struct dir_struct dir;
36         const char *path, *base;
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', NULL, &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         };
53         git_config(git_clean_config, NULL);
54         if (force < 0)
55                 force = 0;
56         else
57                 config_set = 1;
59         argc = parse_options(argc, argv, options, builtin_clean_usage, 0);
61         memset(&dir, 0, sizeof(dir));
62         if (ignored_only)
63                 dir.flags |= DIR_SHOW_IGNORED;
65         if (ignored && ignored_only)
66                 die("-x and -X cannot be used together");
68         if (!show_only && !force)
69                 die("clean.requireForce%s set and -n or -f not given; "
70                     "refusing to clean", config_set ? "" : " not");
72         dir.flags |= DIR_SHOW_OTHER_DIRECTORIES;
74         if (!ignored)
75                 setup_standard_excludes(&dir);
77         pathspec = get_pathspec(prefix, argv);
78         read_cache();
80         /*
81          * Calculate common prefix for the pathspec, and
82          * use that to optimize the directory walk
83          */
84         baselen = common_prefix(pathspec);
85         path = ".";
86         base = "";
87         if (baselen)
88                 path = base = xmemdupz(*pathspec, baselen);
89         read_directory(&dir, path, base, baselen, pathspec);
91         if (pathspec)
92                 seen = xmalloc(argc > 0 ? argc : 1);
94         for (i = 0; i < dir.nr; i++) {
95                 struct dir_entry *ent = dir.entries[i];
96                 int len, pos;
97                 int matches = 0;
98                 struct cache_entry *ce;
99                 struct stat st;
101                 /*
102                  * Remove the '/' at the end that directory
103                  * walking adds for directory entries.
104                  */
105                 len = ent->len;
106                 if (len && ent->name[len-1] == '/')
107                         len--;
108                 pos = cache_name_pos(ent->name, len);
109                 if (0 <= pos)
110                         continue;       /* exact match */
111                 pos = -pos - 1;
112                 if (pos < active_nr) {
113                         ce = active_cache[pos];
114                         if (ce_namelen(ce) == len &&
115                             !memcmp(ce->name, ent->name, len))
116                                 continue; /* Yup, this one exists unmerged */
117                 }
119                 /*
120                  * we might have removed this as part of earlier
121                  * recursive directory removal, so lstat() here could
122                  * fail with ENOENT.
123                  */
124                 if (lstat(ent->name, &st))
125                         continue;
127                 if (pathspec) {
128                         memset(seen, 0, argc > 0 ? argc : 1);
129                         matches = match_pathspec(pathspec, ent->name, len,
130                                                  baselen, seen);
131                 }
133                 if (S_ISDIR(st.st_mode)) {
134                         strbuf_addstr(&directory, ent->name);
135                         qname = quote_path_relative(directory.buf, directory.len, &buf, prefix);
136                         if (show_only && (remove_directories ||
137                             (matches == MATCHED_EXACTLY))) {
138                                 printf("Would remove %s\n", qname);
139                         } else if (remove_directories ||
140                                    (matches == MATCHED_EXACTLY)) {
141                                 if (!quiet)
142                                         printf("Removing %s\n", qname);
143                                 if (remove_dir_recursively(&directory, 0) != 0) {
144                                         warning("failed to remove '%s'", qname);
145                                         errors++;
146                                 }
147                         } else if (show_only) {
148                                 printf("Would not remove %s\n", qname);
149                         } else {
150                                 printf("Not removing %s\n", qname);
151                         }
152                         strbuf_reset(&directory);
153                 } else {
154                         if (pathspec && !matches)
155                                 continue;
156                         qname = quote_path_relative(ent->name, -1, &buf, prefix);
157                         if (show_only) {
158                                 printf("Would remove %s\n", qname);
159                                 continue;
160                         } else if (!quiet) {
161                                 printf("Removing %s\n", qname);
162                         }
163                         if (unlink(ent->name) != 0) {
164                                 warning("failed to remove '%s'", qname);
165                                 errors++;
166                         }
167                 }
168         }
169         free(seen);
171         strbuf_release(&directory);
172         return (errors != 0);