builtin/check-ignore.c

   1 #define USE_THE_INDEX_VARIABLE
   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                                                      PS_HEED_SKIP_WORKTREE);
 105         for (i = 0; i < pathspec.nr; i++) {
 106                 full_path = pathspec.items[i].match;
 107                 pattern = NULL;
 108                 if (!seen[i]) {
 109                         int dtype = DT_UNKNOWN;
 110                         pattern = last_matching_pattern(dir, &the_index,
 111                                                         full_path, &dtype);
 112                         if (!verbose && pattern &&
 113                             pattern->flags & PATTERN_FLAG_NEGATIVE)
 114                                 pattern = NULL;
 115                 }
 116                 if (!quiet && (pattern || show_non_matching))
 117                         output_pattern(pathspec.items[i].original, pattern);
 118                 if (pattern)
 119                         num_ignored++;
 120         }
 121         free(seen);
 122         clear_pathspec(&pathspec);
 123
 124         return num_ignored;
 125 }
 126
 127 static int check_ignore_stdin_paths(struct dir_struct *dir, const char *prefix)
 128 {
 129         struct strbuf buf = STRBUF_INIT;
 130         struct strbuf unquoted = STRBUF_INIT;
 131         char *pathspec[2] = { NULL, NULL };
 132         strbuf_getline_fn getline_fn;
 133         int num_ignored = 0;
 134
 135         getline_fn = nul_term_line ? strbuf_getline_nul : strbuf_getline_lf;
 136         while (getline_fn(&buf, stdin) != EOF) {
 137                 if (!nul_term_line && buf.buf[0] == '"') {
 138                         strbuf_reset(&unquoted);
 139                         if (unquote_c_style(&unquoted, buf.buf, NULL))
 140                                 die("line is badly quoted");
 141                         strbuf_swap(&buf, &unquoted);
 142                 }
 143                 pathspec[0] = buf.buf;
 144                 num_ignored += check_ignore(dir, prefix,
 145                                             1, (const char **)pathspec);
 146                 maybe_flush_or_die(stdout, "check-ignore to stdout");
 147         }
 148         strbuf_release(&buf);
 149         strbuf_release(&unquoted);
 150         return num_ignored;
 151 }
 152
 153 int cmd_check_ignore(int argc, const char **argv, const char *prefix)
 154 {
 155         int num_ignored;
 156         struct dir_struct dir = DIR_INIT;
 157
 158         git_config(git_default_config, NULL);
 159
 160         argc = parse_options(argc, argv, prefix, check_ignore_options,
 161                              check_ignore_usage, 0);
 162
 163         if (stdin_paths) {
 164                 if (argc > 0)
 165                         die(_("cannot specify pathnames with --stdin"));
 166         } else {
 167                 if (nul_term_line)
 168                         die(_("-z only makes sense with --stdin"));
 169                 if (argc == 0)
 170                         die(_("no path specified"));
 171         }
 172         if (quiet) {
 173                 if (argc > 1)
 174                         die(_("--quiet is only valid with a single pathname"));
 175                 if (verbose)
 176                         die(_("cannot have both --quiet and --verbose"));
 177         }
 178         if (show_non_matching && !verbose)
 179                 die(_("--non-matching is only valid with --verbose"));
 180
 181         /* read_cache() is only necessary so we can watch out for submodules. */
 182         if (!no_index && repo_read_index(the_repository) < 0)
 183                 die(_("index file corrupt"));
 184
 185         setup_standard_excludes(&dir);
 186
 187         if (stdin_paths) {
 188                 num_ignored = check_ignore_stdin_paths(&dir, prefix);
 189         } else {
 190                 num_ignored = check_ignore(&dir, prefix, argc, argv);
 191                 maybe_flush_or_die(stdout, "ignore to stdout");
 192         }
 193
 194         dir_clear(&dir);
 195
 196         return !num_ignored;
 197 }