builtin/check-ignore.c

   1 #include "builtin.h"
   2 #include "config.h"
   3 #include "dir.h"
   4 #include "gettext.h"
   5 #include "quote.h"
   6 #include "pathspec.h"
   7 #include "parse-options.h"
   8 #include "repository.h"
   9 #include "submodule.h"
  10 #include "write-or-die.h"
  11
  12 static int quiet, verbose, stdin_paths, show_non_matching, no_index;
  13 static const char * const check_ignore_usage[] = {
  14 "git check-ignore [<options>] <pathname>...",
  15 "git check-ignore [<options>] --stdin",
  16 NULL
  17 };
  18
  19 static int nul_term_line;
  20
  21 static const struct option check_ignore_options[] = {
  22         OPT__QUIET(&quiet, N_("suppress progress reporting")),
  23         OPT__VERBOSE(&verbose, N_("be verbose")),
  24         OPT_GROUP(""),
  25         OPT_BOOL(0, "stdin", &stdin_paths,
  26                  N_("read file names from stdin")),
  27         OPT_BOOL('z', NULL, &nul_term_line,
  28                  N_("terminate input and output records by a NUL character")),
  29         OPT_BOOL('n', "non-matching", &show_non_matching,
  30                  N_("show non-matching input paths")),
  31         OPT_BOOL(0, "no-index", &no_index,
  32                  N_("ignore index when checking")),
  33         OPT_END()
  34 };
  35
  36 static void output_pattern(const char *path, struct path_pattern *pattern)
  37 {
  38         char *bang  = (pattern && pattern->flags & PATTERN_FLAG_NEGATIVE)  ? "!" : "";
  39         char *slash = (pattern && pattern->flags & PATTERN_FLAG_MUSTBEDIR) ? "/" : "";
  40         if (!nul_term_line) {
  41                 if (!verbose) {
  42                         write_name_quoted(path, stdout, '\n');
  43                 } else {
  44                         if (pattern) {
  45                                 quote_c_style(pattern->pl->src, NULL, stdout, 0);
  46                                 printf(":%d:%s%s%s\t",
  47                                        pattern->srcpos,
  48                                        bang, pattern->pattern, slash);
  49                         }
  50                         else {
  51                                 printf("::\t");
  52                         }
  53                         quote_c_style(path, NULL, stdout, 0);
  54                         fputc('\n', stdout);
  55                 }
  56         } else {
  57                 if (!verbose) {
  58                         printf("%s%c", path, '\0');
  59                 } else {
  60                         if (pattern)
  61                                 printf("%s%c%d%c%s%s%s%c%s%c",
  62                                        pattern->pl->src, '\0',
  63                                        pattern->srcpos, '\0',
  64                                        bang, pattern->pattern, slash, '\0',
  65                                        path, '\0');
  66                         else
  67                                 printf("%c%c%c%s%c", '\0', '\0', '\0', path, '\0');
  68                 }
  69         }
  70 }
  71
  72 static int check_ignore(struct dir_struct *dir,
  73                         const char *prefix, int argc, const char **argv)
  74 {
  75         const char *full_path;
  76         char *seen;
  77         int num_ignored = 0, i;
  78         struct path_pattern *pattern;
  79         struct pathspec pathspec;
  80
  81         if (!argc) {
  82                 if (!quiet)
  83                         fprintf(stderr, "no pathspec given.\n");
  84                 return 0;
  85         }
  86
  87         /*
  88          * check-ignore just needs paths. Magic beyond :/ is really
  89          * irrelevant.
  90          */
  91         parse_pathspec(&pathspec,
  92                        PATHSPEC_ALL_MAGIC & ~PATHSPEC_FROMTOP,
  93                        PATHSPEC_SYMLINK_LEADING_PATH |
  94                        PATHSPEC_KEEP_ORDER,
  95                        prefix, argv);
  96
  97         die_path_inside_submodule(the_repository->index, &pathspec);
  98
  99         /*
 100          * look for pathspecs matching entries in the index, since these
 101          * should not be ignored, in order to be consistent with
 102          * 'git status', 'git add' etc.
 103          */
 104         seen = find_pathspecs_matching_against_index(&pathspec, the_repository->index,
 105                                                      PS_HEED_SKIP_WORKTREE);
 106         for (i = 0; i < pathspec.nr; i++) {
 107                 full_path = pathspec.items[i].match;
 108                 pattern = NULL;
 109                 if (!seen[i]) {
 110                         int dtype = DT_UNKNOWN;
 111                         pattern = last_matching_pattern(dir, the_repository->index,
 112                                                         full_path, &dtype);
 113                         if (!verbose && pattern &&
 114                             pattern->flags & PATTERN_FLAG_NEGATIVE)
 115                                 pattern = NULL;
 116                 }
 117                 if (!quiet && (pattern || show_non_matching))
 118                         output_pattern(pathspec.items[i].original, pattern);
 119                 if (pattern)
 120                         num_ignored++;
 121         }
 122         free(seen);
 123         clear_pathspec(&pathspec);
 124
 125         return num_ignored;
 126 }
 127
 128 static int check_ignore_stdin_paths(struct dir_struct *dir, const char *prefix)
 129 {
 130         struct strbuf buf = STRBUF_INIT;
 131         struct strbuf unquoted = STRBUF_INIT;
 132         char *pathspec[2] = { NULL, NULL };
 133         strbuf_getline_fn getline_fn;
 134         int num_ignored = 0;
 135
 136         getline_fn = nul_term_line ? strbuf_getline_nul : strbuf_getline_lf;
 137         while (getline_fn(&buf, stdin) != EOF) {
 138                 if (!nul_term_line && buf.buf[0] == '"') {
 139                         strbuf_reset(&unquoted);
 140                         if (unquote_c_style(&unquoted, buf.buf, NULL))
 141                                 die("line is badly quoted");
 142                         strbuf_swap(&buf, &unquoted);
 143                 }
 144                 pathspec[0] = buf.buf;
 145                 num_ignored += check_ignore(dir, prefix,
 146                                             1, (const char **)pathspec);
 147                 maybe_flush_or_die(stdout, "check-ignore to stdout");
 148         }
 149         strbuf_release(&buf);
 150         strbuf_release(&unquoted);
 151         return num_ignored;
 152 }
 153
 154 int cmd_check_ignore(int argc, const char **argv, const char *prefix)
 155 {
 156         int num_ignored;
 157         struct dir_struct dir = DIR_INIT;
 158
 159         git_config(git_default_config, NULL);
 160
 161         argc = parse_options(argc, argv, prefix, check_ignore_options,
 162                              check_ignore_usage, 0);
 163
 164         if (stdin_paths) {
 165                 if (argc > 0)
 166                         die(_("cannot specify pathnames with --stdin"));
 167         } else {
 168                 if (nul_term_line)
 169                         die(_("-z only makes sense with --stdin"));
 170                 if (argc == 0)
 171                         die(_("no path specified"));
 172         }
 173         if (quiet) {
 174                 if (argc > 1)
 175                         die(_("--quiet is only valid with a single pathname"));
 176                 if (verbose)
 177                         die(_("cannot have both --quiet and --verbose"));
 178         }
 179         if (show_non_matching && !verbose)
 180                 die(_("--non-matching is only valid with --verbose"));
 181
 182         /* read_cache() is only necessary so we can watch out for submodules. */
 183         if (!no_index && repo_read_index(the_repository) < 0)
 184                 die(_("index file corrupt"));
 185
 186         setup_standard_excludes(&dir);
 187
 188         if (stdin_paths) {
 189                 num_ignored = check_ignore_stdin_paths(&dir, prefix);
 190         } else {
 191                 num_ignored = check_ignore(&dir, prefix, argc, argv);
 192                 maybe_flush_or_die(stdout, "ignore to stdout");
 193         }
 194
 195         dir_clear(&dir);
 196
 197         return !num_ignored;
 198 }