X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=builtin-rev-parse.c;h=0351d54435b566d5030f3a83df57fb140fffc143;hb=fae09a8084c9b51632726523b477a78dd28d7d7e;hp=37addb25fafbedba9bad6e99746ee65bacdee7d3;hpb=bff898b894815ad291b35d213f1c022d1d16a9b9;p=git.git

diff --git a/builtin-rev-parse.c b/builtin-rev-parse.c
index 37addb25f..0351d5443 100644
--- a/builtin-rev-parse.c
+++ b/builtin-rev-parse.c
@@ -8,6 +8,7 @@
 #include "refs.h"
 #include "quote.h"
 #include "builtin.h"
+#include "parse-options.h"
 
 #define DO_REVS		1
 #define DO_NOREV	2
@@ -20,6 +21,9 @@ static const char *def;
 #define NORMAL 0
 #define REVERSED 1
 static int show_type = NORMAL;
+
+#define SHOW_SYMBOLIC_ASIS 1
+#define SHOW_SYMBOLIC_FULL 2
 static int symbolic;
 static int abbrev;
 static int output_sq;
@@ -102,8 +106,32 @@ static void show_rev(int type, const unsigned char *sha1, const char *name)
 
 	if (type != show_type)
 		putchar('^');
-	if (symbolic && name)
-		show(name);
+	if (symbolic && name) {
+		if (symbolic == SHOW_SYMBOLIC_FULL) {
+			unsigned char discard[20];
+			char *full;
+
+			switch (dwim_ref(name, strlen(name), discard, &full)) {
+			case 0:
+				/*
+				 * Not found -- not a ref.  We could
+				 * emit "name" here, but symbolic-full
+				 * users are interested in finding the
+				 * refs spelled in full, and they would
+				 * need to filter non-refs if we did so.
+				 */
+				break;
+			case 1: /* happy */
+				show(full);
+				break;
+			default: /* ambiguous */
+				error("refname '%s' is ambiguous", name);
+				break;
+			}
+		} else {
+			show(name);
+		}
+	}
 	else if (abbrev)
 		show(find_unique_abbrev(sha1, abbrev));
 	else
@@ -209,13 +237,144 @@ static int try_difference(const char *arg)
 	return 0;
 }
 
+static int parseopt_dump(const struct option *o, const char *arg, int unset)
+{
+	struct strbuf *parsed = o->value;
+	if (unset)
+		strbuf_addf(parsed, " --no-%s", o->long_name);
+	else if (o->short_name)
+		strbuf_addf(parsed, " -%c", o->short_name);
+	else
+		strbuf_addf(parsed, " --%s", o->long_name);
+	if (arg) {
+		strbuf_addch(parsed, ' ');
+		sq_quote_buf(parsed, arg);
+	}
+	return 0;
+}
+
+static const char *skipspaces(const char *s)
+{
+	while (isspace(*s))
+		s++;
+	return s;
+}
+
+static int cmd_parseopt(int argc, const char **argv, const char *prefix)
+{
+	static int keep_dashdash = 0;
+	static char const * const parseopt_usage[] = {
+		"git-rev-parse --parseopt [options] -- [<args>...]",
+		NULL
+	};
+	static struct option parseopt_opts[] = {
+		OPT_BOOLEAN(0, "keep-dashdash", &keep_dashdash,
+					"keep the `--` passed as an arg"),
+		OPT_END(),
+	};
+
+	struct strbuf sb, parsed;
+	const char **usage = NULL;
+	struct option *opts = NULL;
+	int onb = 0, osz = 0, unb = 0, usz = 0;
+
+	strbuf_init(&parsed, 0);
+	strbuf_addstr(&parsed, "set --");
+	argc = parse_options(argc, argv, parseopt_opts, parseopt_usage,
+	                     PARSE_OPT_KEEP_DASHDASH);
+	if (argc < 1 || strcmp(argv[0], "--"))
+		usage_with_options(parseopt_usage, parseopt_opts);
+
+	strbuf_init(&sb, 0);
+	/* get the usage up to the first line with a -- on it */
+	for (;;) {
+		if (strbuf_getline(&sb, stdin, '\n') == EOF)
+			die("premature end of input");
+		ALLOC_GROW(usage, unb + 1, usz);
+		if (!strcmp("--", sb.buf)) {
+			if (unb < 1)
+				die("no usage string given before the `--' separator");
+			usage[unb] = NULL;
+			break;
+		}
+		usage[unb++] = strbuf_detach(&sb, NULL);
+	}
+
+	/* parse: (<short>|<short>,<long>|<long>)[=?]? SP+ <help> */
+	while (strbuf_getline(&sb, stdin, '\n') != EOF) {
+		const char *s;
+		struct option *o;
+
+		if (!sb.len)
+			continue;
+
+		ALLOC_GROW(opts, onb + 1, osz);
+		memset(opts + onb, 0, sizeof(opts[onb]));
+
+		o = &opts[onb++];
+		s = strchr(sb.buf, ' ');
+		if (!s || *sb.buf == ' ') {
+			o->type = OPTION_GROUP;
+			o->help = xstrdup(skipspaces(sb.buf));
+			continue;
+		}
+
+		o->type = OPTION_CALLBACK;
+		o->help = xstrdup(skipspaces(s));
+		o->value = &parsed;
+		o->flags = PARSE_OPT_NOARG;
+		o->callback = &parseopt_dump;
+		while (s > sb.buf && strchr("*=?!", s[-1])) {
+			switch (*--s) {
+			case '=':
+				o->flags &= ~PARSE_OPT_NOARG;
+				break;
+			case '?':
+				o->flags &= ~PARSE_OPT_NOARG;
+				o->flags |= PARSE_OPT_OPTARG;
+				break;
+			case '!':
+				o->flags |= PARSE_OPT_NONEG;
+				break;
+			case '*':
+				o->flags |= PARSE_OPT_HIDDEN;
+				break;
+			}
+		}
+
+		if (s - sb.buf == 1) /* short option only */
+			o->short_name = *sb.buf;
+		else if (sb.buf[1] != ',') /* long option only */
+			o->long_name = xmemdupz(sb.buf, s - sb.buf);
+		else {
+			o->short_name = *sb.buf;
+			o->long_name = xmemdupz(sb.buf + 2, s - sb.buf - 2);
+		}
+	}
+	strbuf_release(&sb);
+
+	/* put an OPT_END() */
+	ALLOC_GROW(opts, onb + 1, osz);
+	memset(opts + onb, 0, sizeof(opts[onb]));
+	argc = parse_options(argc, argv, opts, usage,
+	                     keep_dashdash ? PARSE_OPT_KEEP_DASHDASH : 0);
+
+	strbuf_addf(&parsed, " --");
+	sq_quote_argv(&parsed, argv, 0);
+	puts(parsed.buf);
+	return 0;
+}
+
 int cmd_rev_parse(int argc, const char **argv, const char *prefix)
 {
 	int i, as_is = 0, verify = 0;
 	unsigned char sha1[20];
 
-	git_config(git_default_config);
+	if (argc > 1 && !strcmp("--parseopt", argv[1]))
+		return cmd_parseopt(argc - 1, argv + 1, prefix);
 
+	prefix = setup_git_directory();
+	git_config(git_default_config);
 	for (i = 1; i < argc; i++) {
 		const char *arg = argv[i];
 
@@ -295,7 +454,11 @@ int cmd_rev_parse(int argc, const char **argv, const char *prefix)
 				continue;
 			}
 			if (!strcmp(arg, "--symbolic")) {
-				symbolic = 1;
+				symbolic = SHOW_SYMBOLIC_ASIS;
+				continue;
+			}
+			if (!strcmp(arg, "--symbolic-full-name")) {
+				symbolic = SHOW_SYMBOLIC_FULL;
 				continue;
 			}
 			if (!strcmp(arg, "--all")) {
@@ -321,6 +484,13 @@ int cmd_rev_parse(int argc, const char **argv, const char *prefix)
 			}
 			if (!strcmp(arg, "--show-cdup")) {
 				const char *pfx = prefix;
+				if (!is_inside_work_tree()) {
+					const char *work_tree =
+						get_git_work_tree();
+					if (work_tree)
+						printf("%s\n", work_tree);
+					continue;
+				}
 				while (pfx) {
 					pfx = strchr(pfx, '/');
 					if (pfx) {
@@ -352,6 +522,16 @@ int cmd_rev_parse(int argc, const char **argv, const char *prefix)
 						: "false");
 				continue;
 			}
+			if (!strcmp(arg, "--is-inside-work-tree")) {
+				printf("%s\n", is_inside_work_tree() ? "true"
+						: "false");
+				continue;
+			}
+			if (!strcmp(arg, "--is-bare-repository")) {
+				printf("%s\n", is_bare_repository() ? "true"
+						: "false");
+				continue;
+			}
 			if (!prefixcmp(arg, "--since=")) {
 				show_datestring("--max-age=", arg+8);
 				continue;