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authorAdam Spiers <git@adamspiers.org>2013-01-06 16:58:13 (GMT)
committerJunio C Hamano <gitster@pobox.com>2013-01-06 22:26:38 (GMT)
commit368aa52952deb631b38a89837c4abbb00c5261c1 (patch)
tree9f0095b883dc642e36ec9306bfd7d07f1ed7c474 /builtin
parent1794e6e0972bec862a29b637e4c4262fa76e97a8 (diff)
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add git-check-ignore sub-command
This works in a similar manner to git-check-attr. Thanks to Jeff King and Junio C Hamano for the idea: http://thread.gmane.org/gmane.comp.version-control.git/108671/focus=108815 Signed-off-by: Adam Spiers <git@adamspiers.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin')
-rw-r--r--builtin/check-ignore.c173
1 files changed, 173 insertions, 0 deletions
diff --git a/builtin/check-ignore.c b/builtin/check-ignore.c
new file mode 100644
index 0000000..709535c
--- /dev/null
+++ b/builtin/check-ignore.c
@@ -0,0 +1,173 @@
+#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;
+static const char * const check_ignore_usage[] = {
+"git check-ignore [options] pathname...",
+"git check-ignore [options] --stdin < <list-of-paths>",
+NULL
+};
+
+static int null_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_BOOLEAN(0, "stdin", &stdin_paths,
+ N_("read file names from stdin")),
+ OPT_BOOLEAN('z', NULL, &null_term_line,
+ N_("input paths are terminated by a null character")),
+ OPT_END()
+};
+
+static void output_exclude(const char *path, struct exclude *exclude)
+{
+ char *bang = exclude->flags & EXC_FLAG_NEGATIVE ? "!" : "";
+ char *slash = exclude->flags & EXC_FLAG_MUSTBEDIR ? "/" : "";
+ if (!null_term_line) {
+ if (!verbose) {
+ write_name_quoted(path, stdout, '\n');
+ } else {
+ quote_c_style(exclude->el->src, NULL, stdout, 0);
+ printf(":%d:%s%s%s\t",
+ exclude->srcpos,
+ bang, exclude->pattern, slash);
+ quote_c_style(path, NULL, stdout, 0);
+ fputc('\n', stdout);
+ }
+ } else {
+ if (!verbose) {
+ printf("%s%c", path, '\0');
+ } else {
+ 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');
+ }
+ }
+}
+
+static int check_ignore(const char *prefix, const char **pathspec)
+{
+ struct dir_struct dir;
+ const char *path, *full_path;
+ char *seen;
+ int num_ignored = 0, dtype = DT_UNKNOWN, i;
+ struct path_exclude_check check;
+ struct exclude *exclude;
+
+ /* read_cache() is only necessary so we can watch out for submodules. */
+ if (read_cache() < 0)
+ die(_("index file corrupt"));
+
+ memset(&dir, 0, sizeof(dir));
+ dir.flags |= DIR_COLLECT_IGNORED;
+ setup_standard_excludes(&dir);
+
+ if (!pathspec || !*pathspec) {
+ if (!quiet)
+ fprintf(stderr, "no pathspec given.\n");
+ return 0;
+ }
+
+ path_exclude_check_init(&check, &dir);
+ /*
+ * 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; pathspec[i]; i++) {
+ path = pathspec[i];
+ full_path = prefix_path(prefix, prefix
+ ? strlen(prefix) : 0, path);
+ full_path = check_path_for_gitlink(full_path);
+ die_if_path_beyond_symlink(full_path, prefix);
+ if (!seen[i] && path[0]) {
+ exclude = last_exclude_matching_path(&check, full_path,
+ -1, &dtype);
+ if (exclude) {
+ if (!quiet)
+ output_exclude(path, exclude);
+ num_ignored++;
+ }
+ }
+ }
+ free(seen);
+ clear_directory(&dir);
+ path_exclude_check_clear(&check);
+
+ return num_ignored;
+}
+
+static int check_ignore_stdin_paths(const char *prefix)
+{
+ struct strbuf buf, nbuf;
+ char **pathspec = NULL;
+ size_t nr = 0, alloc = 0;
+ int line_termination = null_term_line ? 0 : '\n';
+ int num_ignored;
+
+ 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);
+ }
+ ALLOC_GROW(pathspec, nr + 1, alloc);
+ pathspec[nr] = xcalloc(strlen(buf.buf) + 1, sizeof(*buf.buf));
+ strcpy(pathspec[nr++], buf.buf);
+ }
+ ALLOC_GROW(pathspec, nr + 1, alloc);
+ pathspec[nr] = NULL;
+ num_ignored = check_ignore(prefix, (const char **)pathspec);
+ maybe_flush_or_die(stdout, "attribute to stdout");
+ strbuf_release(&buf);
+ strbuf_release(&nbuf);
+ free(pathspec);
+ return num_ignored;
+}
+
+int cmd_check_ignore(int argc, const char **argv, const char *prefix)
+{
+ int num_ignored;
+
+ 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 (null_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 (stdin_paths) {
+ num_ignored = check_ignore_stdin_paths(prefix);
+ } else {
+ num_ignored = check_ignore(prefix, argv);
+ maybe_flush_or_die(stdout, "ignore to stdout");
+ }
+
+ return !num_ignored;
+}