builtin/check-ignore.c

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