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         char *seen = NULL;
  38         struct option options[] = {
  39                 OPT__QUIET(&quiet),
  40                 OPT__DRY_RUN(&show_only),
  41                 OPT_BOOLEAN('f', NULL, &force, "force"),
  42                 OPT_BOOLEAN('d', NULL, &remove_directories,
  43                                 "remove whole directories"),
  44                 OPT_BOOLEAN('x', NULL, &ignored, "remove ignored files, too"),
  45                 OPT_BOOLEAN('X', NULL, &ignored_only,
  46                                 "remove only ignored files"),
  47                 OPT_END()
  48         };
  49
  50         git_config(git_clean_config);
  51         if (force < 0)
  52                 force = 0;
  53         else
  54                 config_set = 1;
  55
  56         argc = parse_options(argc, argv, options, builtin_clean_usage, 0);
  57
  58         memset(&dir, 0, sizeof(dir));
  59         if (ignored_only)
  60                 dir.show_ignored = 1;
  61
  62         if (ignored && ignored_only)
  63                 die("-x and -X cannot be used together");
  64
  65         if (!show_only && !force)
  66                 die("clean.requireForce%s set and -n or -f not given; "
  67                     "refusing to clean", config_set ? "" : " not");
  68
  69         dir.show_other_directories = 1;
  70
  71         if (!ignored)
  72                 setup_standard_excludes(&dir);
  73
  74         pathspec = get_pathspec(prefix, argv);
  75         read_cache();
  76
  77         /*
  78          * Calculate common prefix for the pathspec, and
  79          * use that to optimize the directory walk
  80          */
  81         baselen = common_prefix(pathspec);
  82         path = ".";
  83         base = "";
  84         if (baselen)
  85                 path = base = xmemdupz(*pathspec, baselen);
  86         read_directory(&dir, path, base, baselen, pathspec);
  87         strbuf_init(&directory, 0);
  88
  89         if (pathspec)
  90                 seen = xmalloc(argc);
  91
  92         for (i = 0; i < dir.nr; i++) {
  93                 struct dir_entry *ent = dir.entries[i];
  94                 int len, pos, matches;
  95                 struct cache_entry *ce;
  96                 struct stat st;
  97
  98                 /*
  99                  * Remove the '/' at the end that directory
 100                  * walking adds for directory entries.
 101                  */
 102                 len = ent->len;
 103                 if (len && ent->name[len-1] == '/')
 104                         len--;
 105                 pos = cache_name_pos(ent->name, len);
 106                 if (0 <= pos)
 107                         continue;       /* exact match */
 108                 pos = -pos - 1;
 109                 if (pos < active_nr) {
 110                         ce = active_cache[pos];
 111                         if (ce_namelen(ce) == len &&
 112                             !memcmp(ce->name, ent->name, len))
 113                                 continue; /* Yup, this one exists unmerged */
 114                 }
 115
 116                 /*
 117                  * we might have removed this as part of earlier
 118                  * recursive directory removal, so lstat() here could
 119                  * fail with ENOENT.
 120                  */
 121                 if (lstat(ent->name, &st))
 122                         continue;
 123
 124                 if (pathspec) {
 125                         memset(seen, 0, argc);
 126                         matches = match_pathspec(pathspec, ent->name, ent->len,
 127                                                  baselen, seen);
 128                 } else {
 129                         matches = 0;
 130                 }
 131
 132                 if (S_ISDIR(st.st_mode)) {
 133                         strbuf_addstr(&directory, ent->name);
 134                         if (show_only && (remove_directories || matches)) {
 135                                 printf("Would remove %s\n", directory.buf);
 136                         } else if (quiet && (remove_directories || matches)) {
 137                                 remove_dir_recursively(&directory, 0);
 138                         } else if (remove_directories || matches) {
 139                                 printf("Removing %s\n", directory.buf);
 140                                 remove_dir_recursively(&directory, 0);
 141                         } else if (show_only) {
 142                                 printf("Would not remove %s\n", directory.buf);
 143                         } else {
 144                                 printf("Not removing %s\n", directory.buf);
 145                         }
 146                         strbuf_reset(&directory);
 147                 } else {
 148                         if (pathspec && !matches)
 149                                 continue;
 150                         if (show_only) {
 151                                 printf("Would remove %s\n", ent->name);
 152                                 continue;
 153                         } else if (!quiet) {
 154                                 printf("Removing %s\n", ent->name);
 155                         }
 156                         unlink(ent->name);
 157                 }
 158         }
 159         free(seen);
 160
 161         strbuf_release(&directory);
 162         return 0;
 163 }