builtin/check-ignore.c

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