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 "string-list.h"
  14 #include "quote.h"
  15
  16 static int force = -1; /* unset */
  17
  18 static const char *const builtin_clean_usage[] = {
  19         "git clean [-d] [-f] [-n] [-q] [-e <pattern>] [-x | -X] [--] <paths>...",
  20         NULL
  21 };
  22
  23 static int git_clean_config(const char *var, const char *value, void *cb)
  24 {
  25         if (!strcmp(var, "clean.requireforce"))
  26                 force = !git_config_bool(var, value);
  27         return git_default_config(var, value, cb);
  28 }
  29
  30 static int exclude_cb(const struct option *opt, const char *arg, int unset)
  31 {
  32         struct string_list *exclude_list = opt->value;
  33         string_list_append(exclude_list, arg);
  34         return 0;
  35 }
  36
  37 int cmd_clean(int argc, const char **argv, const char *prefix)
  38 {
  39         int i;
  40         int show_only = 0, remove_directories = 0, quiet = 0, ignored = 0;
  41         int ignored_only = 0, baselen = 0, config_set = 0, errors = 0;
  42         int rm_flags = REMOVE_DIR_KEEP_NESTED_GIT;
  43         struct strbuf directory = STRBUF_INIT;
  44         struct dir_struct dir;
  45         static const char **pathspec;
  46         struct strbuf buf = STRBUF_INIT;
  47         struct string_list exclude_list = { NULL, 0, 0, 0 };
  48         const char *qname;
  49         char *seen = NULL;
  50         struct option options[] = {
  51                 OPT__QUIET(&quiet),
  52                 OPT__DRY_RUN(&show_only),
  53                 OPT_BOOLEAN('f', "force", &force, "force"),
  54                 OPT_BOOLEAN('d', NULL, &remove_directories,
  55                                 "remove whole directories"),
  56                 { OPTION_CALLBACK, 'e', "exclude", &exclude_list, "pattern",
  57                   "exclude <pattern>", PARSE_OPT_NONEG, exclude_cb },
  58                 OPT_BOOLEAN('x', NULL, &ignored, "remove ignored files, too"),
  59                 OPT_BOOLEAN('X', NULL, &ignored_only,
  60                                 "remove only ignored files"),
  61                 OPT_END()
  62         };
  63
  64         git_config(git_clean_config, NULL);
  65         if (force < 0)
  66                 force = 0;
  67         else
  68                 config_set = 1;
  69
  70         argc = parse_options(argc, argv, prefix, options, builtin_clean_usage,
  71                              0);
  72
  73         memset(&dir, 0, sizeof(dir));
  74         if (ignored_only)
  75                 dir.flags |= DIR_SHOW_IGNORED;
  76
  77         if (ignored && ignored_only)
  78                 die("-x and -X cannot be used together");
  79
  80         if (!show_only && !force)
  81                 die("clean.requireForce %s to true and neither -n nor -f given; "
  82                     "refusing to clean", config_set ? "set" : "defaults");
  83
  84         if (force > 1)
  85                 rm_flags = 0;
  86
  87         dir.flags |= DIR_SHOW_OTHER_DIRECTORIES;
  88
  89         if (read_cache() < 0)
  90                 die("index file corrupt");
  91
  92         if (!ignored)
  93                 setup_standard_excludes(&dir);
  94
  95         for (i = 0; i < exclude_list.nr; i++)
  96                 add_exclude(exclude_list.items[i].string, "", 0, dir.exclude_list);
  97
  98         pathspec = get_pathspec(prefix, argv);
  99
 100         fill_directory(&dir, pathspec);
 101
 102         if (pathspec)
 103                 seen = xmalloc(argc > 0 ? argc : 1);
 104
 105         for (i = 0; i < dir.nr; i++) {
 106                 struct dir_entry *ent = dir.entries[i];
 107                 int len, pos;
 108                 int matches = 0;
 109                 struct cache_entry *ce;
 110                 struct stat st;
 111
 112                 /*
 113                  * Remove the '/' at the end that directory
 114                  * walking adds for directory entries.
 115                  */
 116                 len = ent->len;
 117                 if (len && ent->name[len-1] == '/')
 118                         len--;
 119                 pos = cache_name_pos(ent->name, len);
 120                 if (0 <= pos)
 121                         continue;       /* exact match */
 122                 pos = -pos - 1;
 123                 if (pos < active_nr) {
 124                         ce = active_cache[pos];
 125                         if (ce_namelen(ce) == len &&
 126                             !memcmp(ce->name, ent->name, len))
 127                                 continue; /* Yup, this one exists unmerged */
 128                 }
 129
 130                 /*
 131                  * we might have removed this as part of earlier
 132                  * recursive directory removal, so lstat() here could
 133                  * fail with ENOENT.
 134                  */
 135                 if (lstat(ent->name, &st))
 136                         continue;
 137
 138                 if (pathspec) {
 139                         memset(seen, 0, argc > 0 ? argc : 1);
 140                         matches = match_pathspec(pathspec, ent->name, len,
 141                                                  baselen, seen);
 142                 }
 143
 144                 if (S_ISDIR(st.st_mode)) {
 145                         strbuf_addstr(&directory, ent->name);
 146                         qname = quote_path_relative(directory.buf, directory.len, &buf, prefix);
 147                         if (show_only && (remove_directories ||
 148                             (matches == MATCHED_EXACTLY))) {
 149                                 printf("Would remove %s\n", qname);
 150                         } else if (remove_directories ||
 151                                    (matches == MATCHED_EXACTLY)) {
 152                                 if (!quiet)
 153                                         printf("Removing %s\n", qname);
 154                                 if (remove_dir_recursively(&directory,
 155                                                            rm_flags) != 0) {
 156                                         warning("failed to remove '%s'", qname);
 157                                         errors++;
 158                                 }
 159                         } else if (show_only) {
 160                                 printf("Would not remove %s\n", qname);
 161                         } else {
 162                                 printf("Not removing %s\n", qname);
 163                         }
 164                         strbuf_reset(&directory);
 165                 } else {
 166                         if (pathspec && !matches)
 167                                 continue;
 168                         qname = quote_path_relative(ent->name, -1, &buf, prefix);
 169                         if (show_only) {
 170                                 printf("Would remove %s\n", qname);
 171                                 continue;
 172                         } else if (!quiet) {
 173                                 printf("Removing %s\n", qname);
 174                         }
 175                         if (unlink(ent->name) != 0) {
 176                                 warning("failed to remove '%s'", qname);
 177                                 errors++;
 178                         }
 179                 }
 180         }
 181         free(seen);
 182
 183         strbuf_release(&directory);
 184         string_list_clear(&exclude_list, 0);
 185         return (errors != 0);
 186 }