X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=rev-parse.c;h=b82f294a78994e512c4f30da5bb4ba3eca3f95b4;hb=365463851303f74eb5e5be7101811f215602fcd9;hp=243f89f3ccd5b96dc517249673d4cfc994ddb888;hpb=4ae22d96fe9248dac4f26b1fc91154ba5e879799;p=git.git

diff --git a/rev-parse.c b/rev-parse.c
index 243f89f3..b82f294a 100644
--- a/rev-parse.c
+++ b/rev-parse.c
@@ -20,6 +20,7 @@ static char *def = NULL;
 #define REVERSED 1
 static int show_type = NORMAL;
 static int symbolic = 0;
+static int abbrev = 0;
 static int output_sq = 0;
 
 static int revs_count = 0;
@@ -34,6 +35,7 @@ static int is_rev_argument(const char *arg)
 	static const char *rev_args[] = {
 		"--all",
 		"--bisect",
+		"--dense",
 		"--header",
 		"--max-age=",
 		"--max-count=",
@@ -44,12 +46,17 @@ static int is_rev_argument(const char *arg)
 		"--parents",
 		"--pretty",
 		"--show-breaks",
+		"--sparse",
 		"--topo-order",
 		"--unpacked",
 		NULL
 	};
 	const char **p = rev_args;
 
+	/* accept -<digit>, like traditional "head" */
+	if ((*arg == '-') && isdigit(arg[1]))
+		return 1;
+
 	for (;;) {
 		const char *str = *p++;
 		int len;
@@ -93,17 +100,22 @@ static void show_rev(int type, const unsigned char *sha1, const char *name)
 		putchar('^');
 	if (symbolic && name)
 		show(name);
+	else if (abbrev)
+		show(find_unique_abbrev(sha1, abbrev));
 	else
 		show(sha1_to_hex(sha1));
 }
 
 /* Output a flag, only if filter allows it. */
-static void show_flag(char *arg)
+static int show_flag(char *arg)
 {
 	if (!(filter & DO_FLAGS))
-		return;
-	if (filter & (is_rev_argument(arg) ? DO_REVS : DO_NOREV))
+		return 0;
+	if (filter & (is_rev_argument(arg) ? DO_REVS : DO_NOREV)) {
 		show(arg);
+		return 1;
+	}
+	return 0;
 }
 
 static void show_default(void)
@@ -129,32 +141,23 @@ static int show_reference(const char *refname, const unsigned char *sha1)
 
 static void show_datestring(const char *flag, const char *datestr)
 {
-	FILE *date;
 	static char buffer[100];
-	static char cmd[1000];
-	int len;
 
 	/* date handling requires both flags and revs */
 	if ((filter & (DO_FLAGS | DO_REVS)) != (DO_FLAGS | DO_REVS))
 		return;
-	len = strlen(flag);
-	memcpy(buffer, flag, len);
-
-	snprintf(cmd, sizeof(cmd), "date --date=%s +%%s", sq_quote(datestr));
-	date = popen(cmd, "r");
-	if (!date || !fgets(buffer + len, sizeof(buffer) - len, date))
-		die("git-rev-list: bad date string");
-	pclose(date);
-	len = strlen(buffer);
-	if (buffer[len-1] == '\n')
-		buffer[--len] = 0;
+	snprintf(buffer, sizeof(buffer), "%s%lu", flag, approxidate(datestr));
 	show(buffer);
 }
 
-static void show_file(const char *arg)
+static int show_file(const char *arg)
 {
-	if ((filter & (DO_NONFLAGS|DO_NOREV)) == (DO_NONFLAGS|DO_NOREV))
+	show_default();
+	if ((filter & (DO_NONFLAGS|DO_NOREV)) == (DO_NONFLAGS|DO_NOREV)) {
 		show(arg);
+		return 1;
+	}
+	return 0;
 }
 
 int main(int argc, char **argv)
@@ -164,6 +167,7 @@ int main(int argc, char **argv)
 	const char *prefix = setup_git_directory();
 	
 	for (i = 1; i < argc; i++) {
+		struct stat st;
 		char *arg = argv[i];
 		char *dotdot;
 	
@@ -171,10 +175,24 @@ int main(int argc, char **argv)
 			show_file(arg);
 			continue;
 		}
+		if (!strcmp(arg,"-n")) {
+			if (++i >= argc)
+				die("-n requires an argument");
+			if ((filter & DO_FLAGS) && (filter & DO_REVS)) {
+				show(arg);
+				show(argv[i]);
+			}
+			continue;
+		}
+		if (!strncmp(arg,"-n",2)) {
+			if ((filter & DO_FLAGS) && (filter & DO_REVS))
+				show(arg);
+			continue;
+		}
+
 		if (*arg == '-') {
 			if (!strcmp(arg, "--")) {
 				as_is = 1;
-				show_default();
 				/* Pass on the "--" if we show anything but files.. */
 				if (filter & (DO_FLAGS | DO_REVS))
 					show_file(arg);
@@ -206,6 +224,19 @@ int main(int argc, char **argv)
 				verify = 1;
 				continue;
 			}
+			if (!strcmp(arg, "--short") ||
+			    !strncmp(arg, "--short=", 9)) {
+				filter &= ~(DO_FLAGS|DO_NOREV);
+				verify = 1;
+				abbrev = DEFAULT_ABBREV;
+				if (arg[8] == '=')
+					abbrev = strtoul(arg + 9, NULL, 10);
+				if (abbrev < MINIMUM_ABBREV)
+					abbrev = MINIMUM_ABBREV;
+				else if (40 <= abbrev)
+					abbrev = 40;
+				continue;
+			}
 			if (!strcmp(arg, "--sq")) {
 				output_sq = 1;
 				continue;
@@ -227,6 +258,18 @@ int main(int argc, char **argv)
 					puts(prefix);
 				continue;
 			}
+			if (!strcmp(arg, "--show-cdup")) {
+				const char *pfx = prefix;
+				while (pfx) {
+					pfx = strchr(pfx, '/');
+					if (pfx) {
+						pfx++;
+						printf("../");
+					}
+				}
+				putchar('\n');
+				continue;
+			}
 			if (!strcmp(arg, "--git-dir")) {
 				const char *gitdir = getenv(GIT_DIR_ENVIRONMENT);
 				static char cwd[PATH_MAX];
@@ -259,9 +302,8 @@ int main(int argc, char **argv)
 				show_datestring("--min-age=", arg+8);
 				continue;
 			}
-			if (verify)
+			if (show_flag(arg) && verify)
 				die("Needed a single revision");
-			show_flag(arg);
 			continue;
 		}
 
@@ -290,9 +332,13 @@ int main(int argc, char **argv)
 			show_rev(REVERSED, sha1, arg+1);
 			continue;
 		}
+		as_is = 1;
+		if (!show_file(arg))
+			continue;
 		if (verify)
 			die("Needed a single revision");
-		show_file(arg);
+		if (lstat(arg, &st) < 0)
+			die("'%s': %s", arg, strerror(errno));
 	}
 	show_default();
 	if (verify && revs_count != 1)