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
  14 static int force = -1; /* unset */
  15
  16 static const char *const builtin_clean_usage[] = {
  17         "git-clean [-d] [-f] [-n] [-q] [-x | -X] [--] <paths>...",
  18         NULL
  19 };
  20
  21 static int git_clean_config(const char *var, const char *value)
  22 {
  23         if (!strcmp(var, "clean.requireforce"))
  24                 force = !git_config_bool(var, value);
  25         return git_default_config(var, value);
  26 }
  27
  28 int cmd_clean(int argc, const char **argv, const char *prefix)
  29 {
  30         int i;
  31         int show_only = 0, remove_directories = 0, quiet = 0, ignored = 0;
  32         int ignored_only = 0, baselen = 0, config_set = 0;
  33         struct strbuf directory;
  34         struct dir_struct dir;
  35         const char *path, *base;
  36         static const char **pathspec;
  37         int prefix_offset = 0;
  38         char *seen = NULL;
  39         struct option options[] = {
  40                 OPT__QUIET(&quiet),
  41                 OPT__DRY_RUN(&show_only),
  42                 OPT_BOOLEAN('f', NULL, &force, "force"),
  43                 OPT_BOOLEAN('d', NULL, &remove_directories,
  44                                 "remove whole directories"),
  45                 OPT_BOOLEAN('x', NULL, &ignored, "remove ignored files, too"),
  46                 OPT_BOOLEAN('X', NULL, &ignored_only,
  47                                 "remove only ignored files"),
  48                 OPT_END()
  49         };
  50
  51         git_config(git_clean_config);
  52         if (force < 0)
  53                 force = 0;
  54         else
  55                 config_set = 1;
  56
  57         argc = parse_options(argc, argv, options, builtin_clean_usage, 0);
  58
  59         memset(&dir, 0, sizeof(dir));
  60         if (ignored_only)
  61                 dir.show_ignored = 1;
  62
  63         if (ignored && ignored_only)
  64                 die("-x and -X cannot be used together");
  65
  66         if (!show_only && !force)
  67                 die("clean.requireForce%s set and -n or -f not given; "
  68                     "refusing to clean", config_set ? "" : " not");
  69
  70         dir.show_other_directories = 1;
  71
  72         if (!ignored)
  73                 setup_standard_excludes(&dir);
  74
  75         if (prefix)
  76                 prefix_offset = strlen(prefix);
  77         pathspec = get_pathspec(prefix, argv);
  78         read_cache();
  79
  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);
  90         strbuf_init(&directory, 0);
  91
  92         if (pathspec)
  93                 seen = xmalloc(argc > 0 ? argc : 1);
  94
  95         for (i = 0; i < dir.nr; i++) {
  96                 struct dir_entry *ent = dir.entries[i];
  97                 int len, pos, matches;
  98                 struct cache_entry *ce;
  99                 struct stat st;
 100
 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                 }
 118
 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;
 126
 127                 if (pathspec) {
 128                         memset(seen, 0, argc > 0 ? argc : 1);
 129                         matches = match_pathspec(pathspec, ent->name, ent->len,
 130                                                  baselen, seen);
 131                 } else {
 132                         matches = 0;
 133                 }
 134
 135                 if (S_ISDIR(st.st_mode)) {
 136                         strbuf_addstr(&directory, ent->name);
 137                         if (show_only && (remove_directories || matches)) {
 138                                 printf("Would remove %s\n",
 139                                        directory.buf + prefix_offset);
 140                         } else if (quiet && (remove_directories || matches)) {
 141                                 remove_dir_recursively(&directory, 0);
 142                         } else if (remove_directories || matches) {
 143                                 printf("Removing %s\n",
 144                                        directory.buf + prefix_offset);
 145                                 remove_dir_recursively(&directory, 0);
 146                         } else if (show_only) {
 147                                 printf("Would not remove %s\n",
 148                                        directory.buf + prefix_offset);
 149                         } else {
 150                                 printf("Not removing %s\n",
 151                                        directory.buf + prefix_offset);
 152                         }
 153                         strbuf_reset(&directory);
 154                 } else {
 155                         if (pathspec && !matches)
 156                                 continue;
 157                         if (show_only) {
 158                                 printf("Would remove %s\n",
 159                                        ent->name + prefix_offset);
 160                                 continue;
 161                         } else if (!quiet) {
 162                                 printf("Removing %s\n",
 163                                        ent->name + prefix_offset);
 164                         }
 165                         unlink(ent->name);
 166                 }
 167         }
 168         free(seen);
 169
 170         strbuf_release(&directory);
 171         return 0;
 172 }