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-rw-r--r--builtin/check-ignore.c187
1 files changed, 187 insertions, 0 deletions
diff --git a/builtin/check-ignore.c b/builtin/check-ignore.c
new file mode 100644
index 0000000000..dc8d97c56c
--- /dev/null
+++ b/builtin/check-ignore.c
@@ -0,0 +1,187 @@
+#include "builtin.h"
+#include "cache.h"
+#include "dir.h"
+#include "quote.h"
+#include "pathspec.h"
+#include "parse-options.h"
+
+static int quiet, verbose, stdin_paths, show_non_matching, no_index;
+static const char * const check_ignore_usage[] = {
+"git check-ignore [<options>] <pathname>...",
+"git check-ignore [<options>] --stdin < <list-of-paths>",
+NULL
+};
+
+static int nul_term_line;
+
+static const struct option check_ignore_options[] = {
+ OPT__QUIET(&quiet, N_("suppress progress reporting")),
+ OPT__VERBOSE(&verbose, N_("be verbose")),
+ OPT_GROUP(""),
+ OPT_BOOL(0, "stdin", &stdin_paths,
+ N_("read file names from stdin")),
+ OPT_BOOL('z', NULL, &nul_term_line,
+ N_("terminate input and output records by a NUL character")),
+ OPT_BOOL('n', "non-matching", &show_non_matching,
+ N_("show non-matching input paths")),
+ OPT_BOOL(0, "no-index", &no_index,
+ N_("ignore index when checking")),
+ OPT_END()
+};
+
+static void output_exclude(const char *path, struct exclude *exclude)
+{
+ char *bang = (exclude && exclude->flags & EXC_FLAG_NEGATIVE) ? "!" : "";
+ char *slash = (exclude && exclude->flags & EXC_FLAG_MUSTBEDIR) ? "/" : "";
+ if (!nul_term_line) {
+ if (!verbose) {
+ write_name_quoted(path, stdout, '\n');
+ } else {
+ if (exclude) {
+ quote_c_style(exclude->el->src, NULL, stdout, 0);
+ printf(":%d:%s%s%s\t",
+ exclude->srcpos,
+ bang, exclude->pattern, slash);
+ }
+ else {
+ printf("::\t");
+ }
+ quote_c_style(path, NULL, stdout, 0);
+ fputc('\n', stdout);
+ }
+ } else {
+ if (!verbose) {
+ printf("%s%c", path, '\0');
+ } else {
+ if (exclude)
+ printf("%s%c%d%c%s%s%s%c%s%c",
+ exclude->el->src, '\0',
+ exclude->srcpos, '\0',
+ bang, exclude->pattern, slash, '\0',
+ path, '\0');
+ else
+ printf("%c%c%c%s%c", '\0', '\0', '\0', path, '\0');
+ }
+ }
+}
+
+static int check_ignore(struct dir_struct *dir,
+ const char *prefix, int argc, const char **argv)
+{
+ const char *full_path;
+ char *seen;
+ int num_ignored = 0, dtype = DT_UNKNOWN, i;
+ struct exclude *exclude;
+ struct pathspec pathspec;
+
+ if (!argc) {
+ if (!quiet)
+ fprintf(stderr, "no pathspec given.\n");
+ return 0;
+ }
+
+ /*
+ * check-ignore just needs paths. Magic beyond :/ is really
+ * irrelevant.
+ */
+ parse_pathspec(&pathspec,
+ PATHSPEC_ALL_MAGIC & ~PATHSPEC_FROMTOP,
+ PATHSPEC_SYMLINK_LEADING_PATH |
+ PATHSPEC_STRIP_SUBMODULE_SLASH_EXPENSIVE |
+ PATHSPEC_KEEP_ORDER,
+ prefix, argv);
+
+ /*
+ * look for pathspecs matching entries in the index, since these
+ * should not be ignored, in order to be consistent with
+ * 'git status', 'git add' etc.
+ */
+ seen = find_pathspecs_matching_against_index(&pathspec);
+ for (i = 0; i < pathspec.nr; i++) {
+ full_path = pathspec.items[i].match;
+ exclude = NULL;
+ if (!seen[i]) {
+ exclude = last_exclude_matching(dir, full_path, &dtype);
+ }
+ if (!quiet && (exclude || show_non_matching))
+ output_exclude(pathspec.items[i].original, exclude);
+ if (exclude)
+ num_ignored++;
+ }
+ free(seen);
+
+ return num_ignored;
+}
+
+static int check_ignore_stdin_paths(struct dir_struct *dir, const char *prefix)
+{
+ struct strbuf buf, nbuf;
+ char *pathspec[2] = { NULL, NULL };
+ int line_termination = nul_term_line ? 0 : '\n';
+ int num_ignored = 0;
+
+ strbuf_init(&buf, 0);
+ strbuf_init(&nbuf, 0);
+ while (strbuf_getline(&buf, stdin, line_termination) != EOF) {
+ if (line_termination && buf.buf[0] == '"') {
+ strbuf_reset(&nbuf);
+ if (unquote_c_style(&nbuf, buf.buf, NULL))
+ die("line is badly quoted");
+ strbuf_swap(&buf, &nbuf);
+ }
+ pathspec[0] = buf.buf;
+ num_ignored += check_ignore(dir, prefix,
+ 1, (const char **)pathspec);
+ maybe_flush_or_die(stdout, "check-ignore to stdout");
+ }
+ strbuf_release(&buf);
+ strbuf_release(&nbuf);
+ return num_ignored;
+}
+
+int cmd_check_ignore(int argc, const char **argv, const char *prefix)
+{
+ int num_ignored;
+ struct dir_struct dir;
+
+ git_config(git_default_config, NULL);
+
+ argc = parse_options(argc, argv, prefix, check_ignore_options,
+ check_ignore_usage, 0);
+
+ if (stdin_paths) {
+ if (argc > 0)
+ die(_("cannot specify pathnames with --stdin"));
+ } else {
+ if (nul_term_line)
+ die(_("-z only makes sense with --stdin"));
+ if (argc == 0)
+ die(_("no path specified"));
+ }
+ if (quiet) {
+ if (argc > 1)
+ die(_("--quiet is only valid with a single pathname"));
+ if (verbose)
+ die(_("cannot have both --quiet and --verbose"));
+ }
+ if (show_non_matching && !verbose)
+ die(_("--non-matching is only valid with --verbose"));
+
+ /* read_cache() is only necessary so we can watch out for submodules. */
+ if (!no_index && read_cache() < 0)
+ die(_("index file corrupt"));
+
+ memset(&dir, 0, sizeof(dir));
+ setup_standard_excludes(&dir);
+
+ if (stdin_paths) {
+ num_ignored = check_ignore_stdin_paths(&dir, prefix);
+ } else {
+ num_ignored = check_ignore(&dir, prefix, argc, argv);
+ maybe_flush_or_die(stdout, "ignore to stdout");
+ }
+
+ clear_directory(&dir);
+
+ return !num_ignored;
+}