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 0;
  26 }
  27
  28 int cmd_clean(int argc, const char **argv, const char *prefix)
  29 {
  30         int j;
  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         struct option options[] = {
  38                 OPT__QUIET(&quiet),
  39                 OPT__DRY_RUN(&show_only),
  40                 OPT_BOOLEAN('f', NULL, &force, "force"),
  41                 OPT_BOOLEAN('d', NULL, &remove_directories,
  42                                 "remove whole directories"),
  43                 OPT_BOOLEAN('x', NULL, &ignored, "remove ignored files, too"),
  44                 OPT_BOOLEAN('X', NULL, &ignored_only,
  45                                 "remove only ignored files"),
  46                 OPT_END()
  47         };
  48
  49         git_config(git_clean_config);
  50         if (force < 0)
  51                 force = 0;
  52         else
  53                 config_set = 1;
  54
  55         argc = parse_options(argc, argv, options, builtin_clean_usage, 0);
  56
  57         memset(&dir, 0, sizeof(dir));
  58         if (ignored_only) {
  59                 dir.show_ignored =1;
  60                 dir.exclude_per_dir = ".gitignore";
  61         }
  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                 dir.exclude_per_dir = ".gitignore";
  74                 if (!access(git_path("info/exclude"), F_OK)) {
  75                         char *exclude_path = git_path("info/exclude");
  76                         add_excludes_from_file(&dir, exclude_path);
  77                 }
  78         }
  79
  80         pathspec = get_pathspec(prefix, argv);
  81         read_cache();
  82
  83         /*
  84          * Calculate common prefix for the pathspec, and
  85          * use that to optimize the directory walk
  86          */
  87         baselen = common_prefix(pathspec);
  88         path = ".";
  89         base = "";
  90         if (baselen)
  91                 path = base = xmemdupz(*pathspec, baselen);
  92         read_directory(&dir, path, base, baselen, pathspec);
  93         strbuf_init(&directory, 0);
  94
  95         for (j = 0; j < dir.nr; ++j) {
  96                 struct dir_entry *ent = dir.entries[j];
  97                 int len, pos, specs;
  98                 struct cache_entry *ce;
  99                 struct stat st;
 100                 char *seen;
 101
 102                 /*
 103                  * Remove the '/' at the end that directory
 104                  * walking adds for directory entries.
 105                  */
 106                 len = ent->len;
 107                 if (len && ent->name[len-1] == '/')
 108                         len--;
 109                 pos = cache_name_pos(ent->name, len);
 110                 if (0 <= pos)
 111                         continue;       /* exact match */
 112                 pos = -pos - 1;
 113                 if (pos < active_nr) {
 114                         ce = active_cache[pos];
 115                         if (ce_namelen(ce) == len &&
 116                             !memcmp(ce->name, ent->name, len))
 117                                 continue; /* Yup, this one exists unmerged */
 118                 }
 119
 120                 if (!lstat(ent->name, &st) && (S_ISDIR(st.st_mode))) {
 121                         int matched_path = 0;
 122                         strbuf_addstr(&directory, ent->name);
 123                         if (pathspec) {
 124                                 for (specs =0; pathspec[specs]; ++specs)
 125                                         /* nothing */;
 126                                 seen = xcalloc(specs, 1);
 127                                 /* Check if directory was explictly passed as
 128                                  * pathspec.  If so we want to remove it */
 129                                 if (match_pathspec(pathspec, ent->name, ent->len,
 130                                                    baselen, seen))
 131                                         matched_path = 1;
 132                                 free(seen);
 133                         }
 134                         if (show_only && (remove_directories || matched_path)) {
 135                                 printf("Would remove %s\n", directory.buf);
 136                         } else if (quiet && (remove_directories || matched_path)) {
 137                                 remove_dir_recursively(&directory, 0);
 138                         } else if (remove_directories || matched_path) {
 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 (show_only) {
 149                                 printf("Would remove %s\n", ent->name);
 150                                 continue;
 151                         } else if (!quiet) {
 152                                 printf("Removing %s\n", ent->name);
 153                         }
 154                         unlink(ent->name);
 155                 }
 156         }
 157
 158         strbuf_release(&directory);
 159         return 0;
 160 }