59acf74c58cff87842734664050204ff6130447b
   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
   8static int quiet, verbose, stdin_paths, show_non_matching;
   9static const char * const check_ignore_usage[] = {
  10"git check-ignore [options] pathname...",
  11"git check-ignore [options] --stdin < <list-of-paths>",
  12NULL
  13};
  14
  15static int null_term_line;
  16
  17static const struct option check_ignore_options[] = {
  18        OPT__QUIET(&quiet, N_("suppress progress reporting")),
  19        OPT__VERBOSE(&verbose, N_("be verbose")),
  20        OPT_GROUP(""),
  21        OPT_BOOLEAN(0, "stdin", &stdin_paths,
  22                    N_("read file names from stdin")),
  23        OPT_BOOLEAN('z', NULL, &null_term_line,
  24                    N_("input paths are terminated by a null character")),
  25        OPT_BOOLEAN('n', "non-matching", &show_non_matching,
  26                    N_("show non-matching input paths")),
  27        OPT_END()
  28};
  29
  30static void output_exclude(const char *path, struct exclude *exclude)
  31{
  32        char *bang  = (exclude && exclude->flags & EXC_FLAG_NEGATIVE)  ? "!" : "";
  33        char *slash = (exclude && exclude->flags & EXC_FLAG_MUSTBEDIR) ? "/" : "";
  34        if (!null_term_line) {
  35                if (!verbose) {
  36                        write_name_quoted(path, stdout, '\n');
  37                } else {
  38                        if (exclude) {
  39                                quote_c_style(exclude->el->src, NULL, stdout, 0);
  40                                printf(":%d:%s%s%s\t",
  41                                       exclude->srcpos,
  42                                       bang, exclude->pattern, slash);
  43                        }
  44                        else {
  45                                printf("::\t");
  46                        }
  47                        quote_c_style(path, NULL, stdout, 0);
  48                        fputc('\n', stdout);
  49                }
  50        } else {
  51                if (!verbose) {
  52                        printf("%s%c", path, '\0');
  53                } else {
  54                        if (exclude)
  55                                printf("%s%c%d%c%s%s%s%c%s%c",
  56                                       exclude->el->src, '\0',
  57                                       exclude->srcpos, '\0',
  58                                       bang, exclude->pattern, slash, '\0',
  59                                       path, '\0');
  60                        else
  61                                printf("%c%c%c%s%c", '\0', '\0', '\0', path, '\0');
  62                }
  63        }
  64}
  65
  66static int check_ignore(const char *prefix, const char **pathspec)
  67{
  68        struct dir_struct dir;
  69        const char *path, *full_path;
  70        char *seen;
  71        int num_ignored = 0, dtype = DT_UNKNOWN, i;
  72        struct path_exclude_check check;
  73        struct exclude *exclude;
  74
  75        /* read_cache() is only necessary so we can watch out for submodules. */
  76        if (read_cache() < 0)
  77                die(_("index file corrupt"));
  78
  79        memset(&dir, 0, sizeof(dir));
  80        dir.flags |= DIR_COLLECT_IGNORED;
  81        setup_standard_excludes(&dir);
  82
  83        if (!pathspec || !*pathspec) {
  84                if (!quiet)
  85                        fprintf(stderr, "no pathspec given.\n");
  86                return 0;
  87        }
  88
  89        path_exclude_check_init(&check, &dir);
  90        /*
  91         * look for pathspecs matching entries in the index, since these
  92         * should not be ignored, in order to be consistent with
  93         * 'git status', 'git add' etc.
  94         */
  95        seen = find_pathspecs_matching_against_index(pathspec);
  96        for (i = 0; pathspec[i]; i++) {
  97                path = pathspec[i];
  98                full_path = prefix_path(prefix, prefix
  99                                        ? strlen(prefix) : 0, path);
 100                full_path = check_path_for_gitlink(full_path);
 101                die_if_path_beyond_symlink(full_path, prefix);
 102                exclude = NULL;
 103                if (!seen[i]) {
 104                        exclude = last_exclude_matching_path(&check, full_path,
 105                                                             -1, &dtype);
 106                }
 107                if (!quiet && (exclude || show_non_matching))
 108                        output_exclude(path, exclude);
 109                if (exclude)
 110                        num_ignored++;
 111        }
 112        free(seen);
 113        clear_directory(&dir);
 114        path_exclude_check_clear(&check);
 115
 116        return num_ignored;
 117}
 118
 119static int check_ignore_stdin_paths(const char *prefix)
 120{
 121        struct strbuf buf, nbuf;
 122        char **pathspec = NULL;
 123        size_t nr = 0, alloc = 0;
 124        int line_termination = null_term_line ? 0 : '\n';
 125        int num_ignored;
 126
 127        strbuf_init(&buf, 0);
 128        strbuf_init(&nbuf, 0);
 129        while (strbuf_getline(&buf, stdin, line_termination) != EOF) {
 130                if (line_termination && buf.buf[0] == '"') {
 131                        strbuf_reset(&nbuf);
 132                        if (unquote_c_style(&nbuf, buf.buf, NULL))
 133                                die("line is badly quoted");
 134                        strbuf_swap(&buf, &nbuf);
 135                }
 136                ALLOC_GROW(pathspec, nr + 1, alloc);
 137                pathspec[nr] = xcalloc(strlen(buf.buf) + 1, sizeof(*buf.buf));
 138                strcpy(pathspec[nr++], buf.buf);
 139        }
 140        ALLOC_GROW(pathspec, nr + 1, alloc);
 141        pathspec[nr] = NULL;
 142        num_ignored = check_ignore(prefix, (const char **)pathspec);
 143        maybe_flush_or_die(stdout, "attribute to stdout");
 144        strbuf_release(&buf);
 145        strbuf_release(&nbuf);
 146        free(pathspec);
 147        return num_ignored;
 148}
 149
 150int cmd_check_ignore(int argc, const char **argv, const char *prefix)
 151{
 152        int num_ignored;
 153
 154        git_config(git_default_config, NULL);
 155
 156        argc = parse_options(argc, argv, prefix, check_ignore_options,
 157                             check_ignore_usage, 0);
 158
 159        if (stdin_paths) {
 160                if (argc > 0)
 161                        die(_("cannot specify pathnames with --stdin"));
 162        } else {
 163                if (null_term_line)
 164                        die(_("-z only makes sense with --stdin"));
 165                if (argc == 0)
 166                        die(_("no path specified"));
 167        }
 168        if (quiet) {
 169                if (argc > 1)
 170                        die(_("--quiet is only valid with a single pathname"));
 171                if (verbose)
 172                        die(_("cannot have both --quiet and --verbose"));
 173        }
 174        if (show_non_matching && !verbose)
 175                die(_("--non-matching is only valid with --verbose"));
 176
 177        if (stdin_paths) {
 178                num_ignored = check_ignore_stdin_paths(prefix);
 179        } else {
 180                num_ignored = check_ignore(prefix, argv);
 181                maybe_flush_or_die(stdout, "ignore to stdout");
 182        }
 183
 184        return !num_ignored;
 185}