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, 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 = STRING_LIST_INIT_NODUP;
  48         const char *qname;
  49         char *seen = NULL;
  50         struct option options[] = {
  51                 OPT__QUIET(&quiet, "do not print names of files removed"),
  52                 OPT__DRY_RUN(&show_only, "dry run"),
  53                 OPT__FORCE(&force, "force"),
  54                 OPT_BOOLEAN('d', NULL, &remove_directories,
  55                                 "remove whole directories"),
  56                 { OPTION_CALLBACK, 'e', "exclude", &exclude_list, "pattern",
  57                   "add <pattern> to ignore rules", 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                 if (config_set)
  82                         die(_("clean.requireForce set to true and neither -n nor -f given; "
  83                                   "refusing to clean"));
  84                 else
  85                         die(_("clean.requireForce defaults to true and neither -n nor -f given; "
  86                                   "refusing to clean"));
  87         }
  88
  89         if (force > 1)
  90                 rm_flags = 0;
  91
  92         dir.flags |= DIR_SHOW_OTHER_DIRECTORIES;
  93
  94         if (read_cache() < 0)
  95                 die(_("index file corrupt"));
  96
  97         if (!ignored)
  98                 setup_standard_excludes(&dir);
  99
 100         add_exclude_list(&dir, EXC_CMDL, "--exclude option");
 101         for (i = 0; i < exclude_list.nr; i++)
 102                 add_exclude(exclude_list.items[i].string, "", 0,
 103                             &dir.exclude_list_group[EXC_CMDL].el[0], -(i+1));
 104
 105         pathspec = get_pathspec(prefix, argv);
 106
 107         fill_directory(&dir, pathspec);
 108
 109         if (pathspec)
 110                 seen = xmalloc(argc > 0 ? argc : 1);
 111
 112         for (i = 0; i < dir.nr; i++) {
 113                 struct dir_entry *ent = dir.entries[i];
 114                 int len, pos;
 115                 int matches = 0;
 116                 struct cache_entry *ce;
 117                 struct stat st;
 118
 119                 /*
 120                  * Remove the '/' at the end that directory
 121                  * walking adds for directory entries.
 122                  */
 123                 len = ent->len;
 124                 if (len && ent->name[len-1] == '/')
 125                         len--;
 126                 pos = cache_name_pos(ent->name, len);
 127                 if (0 <= pos)
 128                         continue;       /* exact match */
 129                 pos = -pos - 1;
 130                 if (pos < active_nr) {
 131                         ce = active_cache[pos];
 132                         if (ce_namelen(ce) == len &&
 133                             !memcmp(ce->name, ent->name, len))
 134                                 continue; /* Yup, this one exists unmerged */
 135                 }
 136
 137                 /*
 138                  * we might have removed this as part of earlier
 139                  * recursive directory removal, so lstat() here could
 140                  * fail with ENOENT.
 141                  */
 142                 if (lstat(ent->name, &st))
 143                         continue;
 144
 145                 if (pathspec) {
 146                         memset(seen, 0, argc > 0 ? argc : 1);
 147                         matches = match_pathspec(pathspec, ent->name, len,
 148                                                  0, seen);
 149                 }
 150
 151                 if (S_ISDIR(st.st_mode)) {
 152                         strbuf_addstr(&directory, ent->name);
 153                         qname = quote_path_relative(directory.buf, directory.len, &buf, prefix);
 154                         if (show_only && (remove_directories ||
 155                             (matches == MATCHED_EXACTLY))) {
 156                                 printf(_("Would remove %s\n"), qname);
 157                         } else if (remove_directories ||
 158                                    (matches == MATCHED_EXACTLY)) {
 159                                 if (!quiet)
 160                                         printf(_("Removing %s\n"), qname);
 161                                 if (remove_dir_recursively(&directory,
 162                                                            rm_flags) != 0) {
 163                                         warning(_("failed to remove %s"), qname);
 164                                         errors++;
 165                                 }
 166                         } else if (show_only) {
 167                                 printf(_("Would not remove %s\n"), qname);
 168                         } else {
 169                                 printf(_("Not removing %s\n"), qname);
 170                         }
 171                         strbuf_reset(&directory);
 172                 } else {
 173                         if (pathspec && !matches)
 174                                 continue;
 175                         qname = quote_path_relative(ent->name, -1, &buf, prefix);
 176                         if (show_only) {
 177                                 printf(_("Would remove %s\n"), qname);
 178                                 continue;
 179                         } else if (!quiet) {
 180                                 printf(_("Removing %s\n"), qname);
 181                         }
 182                         if (unlink(ent->name) != 0) {
 183                                 warning(_("failed to remove %s"), qname);
 184                                 errors++;
 185                         }
 186                 }
 187         }
 188         free(seen);
 189
 190         strbuf_release(&directory);
 191         string_list_clear(&exclude_list, 0);
 192         return (errors != 0);
 193 }