7388346ef2a0beb925d67e4933b3aacb43c3c47e
   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;
   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_END()
  26};
  27
  28static void output_exclude(const char *path, struct exclude *exclude)
  29{
  30        char *bang  = exclude->flags & EXC_FLAG_NEGATIVE  ? "!" : "";
  31        char *slash = exclude->flags & EXC_FLAG_MUSTBEDIR ? "/" : "";
  32        if (!null_term_line) {
  33                if (!verbose) {
  34                        write_name_quoted(path, stdout, '\n');
  35                } else {
  36                        quote_c_style(exclude->el->src, NULL, stdout, 0);
  37                        printf(":%d:%s%s%s\t",
  38                               exclude->srcpos,
  39                               bang, exclude->pattern, slash);
  40                        quote_c_style(path, NULL, stdout, 0);
  41                        fputc('\n', stdout);
  42                }
  43        } else {
  44                if (!verbose) {
  45                        printf("%s%c", path, '\0');
  46                } else {
  47                        printf("%s%c%d%c%s%s%s%c%s%c",
  48                               exclude->el->src, '\0',
  49                               exclude->srcpos, '\0',
  50                               bang, exclude->pattern, slash, '\0',
  51                               path, '\0');
  52                }
  53        }
  54}
  55
  56static int check_ignore(const char *prefix, const char **pathspec)
  57{
  58        struct dir_struct dir;
  59        const char *path, *full_path;
  60        char *seen;
  61        int num_ignored = 0, dtype = DT_UNKNOWN, i;
  62        struct exclude *exclude;
  63
  64        /* read_cache() is only necessary so we can watch out for submodules. */
  65        if (read_cache() < 0)
  66                die(_("index file corrupt"));
  67
  68        memset(&dir, 0, sizeof(dir));
  69        dir.flags |= DIR_COLLECT_IGNORED;
  70        setup_standard_excludes(&dir);
  71
  72        if (!pathspec || !*pathspec) {
  73                if (!quiet)
  74                        fprintf(stderr, "no pathspec given.\n");
  75                return 0;
  76        }
  77
  78        /*
  79         * look for pathspecs matching entries in the index, since these
  80         * should not be ignored, in order to be consistent with
  81         * 'git status', 'git add' etc.
  82         */
  83        seen = find_pathspecs_matching_against_index(pathspec);
  84        for (i = 0; pathspec[i]; i++) {
  85                path = pathspec[i];
  86                full_path = prefix_path(prefix, prefix
  87                                        ? strlen(prefix) : 0, path);
  88                full_path = check_path_for_gitlink(full_path);
  89                die_if_path_beyond_symlink(full_path, prefix);
  90                if (!seen[i]) {
  91                        exclude = last_exclude_matching(&dir, full_path, &dtype);
  92                        if (exclude) {
  93                                if (!quiet)
  94                                        output_exclude(path, exclude);
  95                                num_ignored++;
  96                        }
  97                }
  98        }
  99        free(seen);
 100        clear_directory(&dir);
 101
 102        return num_ignored;
 103}
 104
 105static int check_ignore_stdin_paths(const char *prefix)
 106{
 107        struct strbuf buf, nbuf;
 108        char **pathspec = NULL;
 109        size_t nr = 0, alloc = 0;
 110        int line_termination = null_term_line ? 0 : '\n';
 111        int num_ignored;
 112
 113        strbuf_init(&buf, 0);
 114        strbuf_init(&nbuf, 0);
 115        while (strbuf_getline(&buf, stdin, line_termination) != EOF) {
 116                if (line_termination && buf.buf[0] == '"') {
 117                        strbuf_reset(&nbuf);
 118                        if (unquote_c_style(&nbuf, buf.buf, NULL))
 119                                die("line is badly quoted");
 120                        strbuf_swap(&buf, &nbuf);
 121                }
 122                ALLOC_GROW(pathspec, nr + 1, alloc);
 123                pathspec[nr] = xcalloc(strlen(buf.buf) + 1, sizeof(*buf.buf));
 124                strcpy(pathspec[nr++], buf.buf);
 125        }
 126        ALLOC_GROW(pathspec, nr + 1, alloc);
 127        pathspec[nr] = NULL;
 128        num_ignored = check_ignore(prefix, (const char **)pathspec);
 129        maybe_flush_or_die(stdout, "attribute to stdout");
 130        strbuf_release(&buf);
 131        strbuf_release(&nbuf);
 132        free(pathspec);
 133        return num_ignored;
 134}
 135
 136int cmd_check_ignore(int argc, const char **argv, const char *prefix)
 137{
 138        int num_ignored;
 139
 140        git_config(git_default_config, NULL);
 141
 142        argc = parse_options(argc, argv, prefix, check_ignore_options,
 143                             check_ignore_usage, 0);
 144
 145        if (stdin_paths) {
 146                if (argc > 0)
 147                        die(_("cannot specify pathnames with --stdin"));
 148        } else {
 149                if (null_term_line)
 150                        die(_("-z only makes sense with --stdin"));
 151                if (argc == 0)
 152                        die(_("no path specified"));
 153        }
 154        if (quiet) {
 155                if (argc > 1)
 156                        die(_("--quiet is only valid with a single pathname"));
 157                if (verbose)
 158                        die(_("cannot have both --quiet and --verbose"));
 159        }
 160
 161        if (stdin_paths) {
 162                num_ignored = check_ignore_stdin_paths(prefix);
 163        } else {
 164                num_ignored = check_ignore(prefix, argv);
 165                maybe_flush_or_die(stdout, "ignore to stdout");
 166        }
 167
 168        return !num_ignored;
 169}