X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=rev-parse.c;h=1965e90a8a0c3fa25c2fccfcc82f5da395a093bc;hb=3c4e8a636f4de3668b24d0020df731cdc78ae6e9;hp=1b08b455811d914ba88ba138b1c0187ac6e20d58;hpb=a8be83fe00eded0bd6cb0001879ddf211a2cf2f2;p=git.git

diff --git a/rev-parse.c b/rev-parse.c
index 1b08b455..1965e90a 100644
--- a/rev-parse.c
+++ b/rev-parse.c
@@ -5,8 +5,21 @@
  */
 #include "cache.h"
 #include "commit.h"
+#include "refs.h"
 
-static int get_extended_sha1(char *name, unsigned char *sha1);
+static char *def = NULL;
+static int no_revs = 0;
+static int single_rev = 0;
+static int revs_only = 0;
+static int do_rev_argument = 1;
+static int output_revs = 0;
+static int flags_only = 0;
+static int no_flags = 0;
+static int output_sq = 0;
+
+#define NORMAL 0
+#define REVERSED 1
+static int show_type = NORMAL;
 
 /*
  * Some arguments are relevant "revision" arguments,
@@ -35,60 +48,88 @@ static int is_rev_argument(const char *arg)
 	}
 }
 
-static int get_parent(char *name, unsigned char *result, int idx)
+static void show(const char *arg)
 {
-	unsigned char sha1[20];
-	int ret = get_extended_sha1(name, sha1);
-	struct commit *commit;
-	struct commit_list *p;
-
-	if (ret)
-		return ret;
-	commit = lookup_commit_reference(sha1);
-	if (!commit)
-		return -1;
-	if (parse_commit(commit))
-		return -1;
-	p = commit->parents;
-	while (p) {
-		if (!--idx) {
-			memcpy(result, p->item->object.sha1, 20);
-			return 0;
+	if (output_sq) {
+		int sq = '\'', ch;
+
+		putchar(sq);
+		while ((ch = *arg++)) {
+			if (ch == sq)
+				fputs("'\\'", stdout);
+			putchar(ch);
 		}
-		p = p->next;
+		putchar(sq);
+		putchar(' ');
 	}
-	return -1;
+	else
+		puts(arg);
 }
 
-/*
- * This is like "get_sha1()", except it allows "sha1 expressions",
- * notably "xyz.p" for "parent of xyz"
- */
-static int get_extended_sha1(char *name, unsigned char *sha1)
+static void show_rev(int type, const unsigned char *sha1)
 {
-	int parent;
-	int len = strlen(name);
+	if (no_revs)
+		return;
+	output_revs++;
 
-	parent = 1;
-	if (len > 3 && name[len-1] >= '1' && name[len-1] <= '9') {
-		parent = name[len-1] - '0';
-		len--;
-	}
-	if (len > 2 && !memcmp(name + len - 2, ".p", 2)) {
-		int ret;
-		name[len-2] = 0;
-		ret = get_parent(name, sha1, parent);
-		name[len-2] = '.';
-		if (!ret)
-			return 0;
+	/* Hexadecimal string plus possibly a carret;
+	 * this does not have to be quoted even under output_sq.
+	 */
+	printf("%s%s%c", type == show_type ? "" : "^", sha1_to_hex(sha1),
+	       output_sq ? ' ' : '\n');
+}
+
+static void show_rev_arg(char *rev)
+{
+	if (no_revs)
+		return;
+	show(rev);
+}
+
+static void show_norev(char *norev)
+{
+	if (flags_only)
+		return;
+	if (revs_only)
+		return;
+	show(norev);
+}
+
+static void show_arg(char *arg)
+{
+	if (no_flags)
+		return;
+	if (do_rev_argument && is_rev_argument(arg))
+		show_rev_arg(arg);
+	else
+		show_norev(arg);
+}
+
+static void show_default(void)
+{
+	char *s = def;
+
+	if (s) {
+		unsigned char sha1[20];
+
+		def = NULL;
+		if (!get_sha1(s, sha1)) {
+			show_rev(NORMAL, sha1);
+			return;
+		}
+		show_arg(s);
 	}
-	return get_sha1(name, sha1);
+}
+
+static int show_reference(const char *refname, const unsigned char *sha1)
+{
+	show_rev(NORMAL, sha1);
+	return 0;
 }
 
 int main(int argc, char **argv)
 {
-	int i, as_is = 0, revs_only = 0, no_revs = 0;
-	char *def = NULL;
+	int i, as_is = 0;
 	unsigned char sha1[20];
 
 	for (i = 1; i < argc; i++) {
@@ -96,22 +137,17 @@ int main(int argc, char **argv)
 		char *dotdot;
 	
 		if (as_is) {
-			printf("%s\n", arg);
+			show_norev(arg);
 			continue;
 		}
 		if (*arg == '-') {
 			if (!strcmp(arg, "--")) {
-				if (def) {
-					printf("%s\n", def);
-					def = NULL;
-				}
+				show_default();
 				if (revs_only)
 					break;
 				as_is = 1;
 			}
 			if (!strcmp(arg, "--default")) {
-				if (def)
-					printf("%s\n", def);
 				def = argv[i+1];
 				i++;
 				continue;
@@ -124,11 +160,33 @@ int main(int argc, char **argv)
 				no_revs = 1;
 				continue;
 			}
-			if (revs_only | no_revs) {
-				if (is_rev_argument(arg) != revs_only)
-					continue;
+			if (!strcmp(arg, "--flags")) {
+				flags_only = 1;
+				continue;
+			}
+			if (!strcmp(arg, "--no-flags")) {
+				no_flags = 1;
+				continue;
 			}
-			printf("%s\n", arg);
+			if (!strcmp(arg, "--verify")) {
+				revs_only = 1;
+				do_rev_argument = 0;
+				single_rev = 1;
+				continue;
+			}
+			if (!strcmp(arg, "--sq")) {
+				output_sq = 1;
+				continue;
+			}
+			if (!strcmp(arg, "--not")) {
+				show_type ^= REVERSED;
+				continue;
+			}
+			if (!strcmp(arg, "--all")) {
+				for_each_ref(show_reference);
+				continue;
+			}
+			show_arg(arg);
 			continue;
 		}
 		dotdot = strstr(arg, "..");
@@ -136,43 +194,41 @@ int main(int argc, char **argv)
 			unsigned char end[20];
 			char *n = dotdot+2;
 			*dotdot = 0;
-			if (!get_extended_sha1(arg, sha1)) {
+			if (!get_sha1(arg, sha1)) {
 				if (!*n)
 					n = "HEAD";
-				if (!get_extended_sha1(n, end)) {
+				if (!get_sha1(n, end)) {
 					if (no_revs)
 						continue;
 					def = NULL;
-					printf("%s\n", sha1_to_hex(end));
-					printf("^%s\n", sha1_to_hex(sha1));
+					show_rev(NORMAL, end);
+					show_rev(REVERSED, sha1);
 					continue;
 				}
 			}
 			*dotdot = '.';
 		}
-		if (!get_extended_sha1(arg, sha1)) {
+		if (!get_sha1(arg, sha1)) {
 			if (no_revs)
 				continue;
 			def = NULL;
-			printf("%s\n", sha1_to_hex(sha1));
+			show_rev(NORMAL, sha1);
 			continue;
 		}
-		if (*arg == '^' && !get_extended_sha1(arg+1, sha1)) {
+		if (*arg == '^' && !get_sha1(arg+1, sha1)) {
 			if (no_revs)
 				continue;
 			def = NULL;
-			printf("^%s\n", sha1_to_hex(sha1));
+			show_rev(REVERSED, sha1);
 			continue;
 		}
-		if (def) {
-			printf("%s\n", def);
-			def = NULL;
-		}
-		if (revs_only)
-			continue;
-		printf("%s\n", arg);
+		show_default();
+		show_norev(arg);
+	}
+	show_default();
+	if (single_rev && output_revs != 1) {
+		fprintf(stderr, "Needed a single revision\n");
+		exit(1);
 	}
-	if (def)
-		printf("%s\n", def);
 	return 0;
 }