X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=builtin-name-rev.c;h=03083e94776234b280316978cd3f638262f41398;hb=ac076c29ae8d57b72abe27f573061ea7b2eeed57;hp=c022224361b62b527aca7822920ac8ea896ae585;hpb=c182ec90d824168cfb70494bb920c0a2fb590d98;p=git.git

diff --git a/builtin-name-rev.c b/builtin-name-rev.c
index c02222436..03083e947 100644
--- a/builtin-name-rev.c
+++ b/builtin-name-rev.c
@@ -4,19 +4,24 @@
 #include "tag.h"
 #include "refs.h"
 
+#define CUTOFF_DATE_SLOP 86400 /* one day */
+
 static const char name_rev_usage[] =
 	"git-name-rev [--tags | --refs=<pattern>] ( --all | --stdin | committish [committish...] )\n";
 
 typedef struct rev_name {
 	const char *tip_name;
-	int merge_traversals;
 	int generation;
+	int distance;
 } rev_name;
 
 static long cutoff = LONG_MAX;
 
+/* How many generations are maximally preferred over _one_ merge traversal? */
+#define MERGE_TRAVERSAL_WEIGHT 65535
+
 static void name_rev(struct commit *commit,
-		const char *tip_name, int merge_traversals, int generation,
+		const char *tip_name, int generation, int distance,
 		int deref)
 {
 	struct rev_name *name = (struct rev_name *)commit->util;
@@ -43,13 +48,11 @@ static void name_rev(struct commit *commit,
 		name = xmalloc(sizeof(rev_name));
 		commit->util = name;
 		goto copy_data;
-	} else if (name->merge_traversals > merge_traversals ||
-			(name->merge_traversals == merge_traversals &&
-			 name->generation > generation)) {
+	} else if (name->distance > distance) {
 copy_data:
 		name->tip_name = tip_name;
-		name->merge_traversals = merge_traversals;
 		name->generation = generation;
+		name->distance = distance;
 	} else
 		return;
 
@@ -58,7 +61,10 @@ copy_data:
 			parents = parents->next, parent_number++) {
 		if (parent_number > 1) {
 			int len = strlen(tip_name);
-			char *new_name = xmalloc(len + 8);
+			char *new_name = xmalloc(len +
+				1 + decimal_length(generation) +  /* ~<n> */
+				1 + 2 +				  /* ^NN */
+				1);
 
 			if (len > 2 && !strcmp(tip_name + len - 2, "^0"))
 				len -= 2;
@@ -69,17 +75,18 @@ copy_data:
 				sprintf(new_name, "%.*s^%d", len, tip_name,
 						parent_number);
 
-			name_rev(parents->item, new_name,
-				merge_traversals + 1 , 0, 0);
+			name_rev(parents->item, new_name, 0,
+				distance + MERGE_TRAVERSAL_WEIGHT, 0);
 		} else {
-			name_rev(parents->item, tip_name, merge_traversals,
-				generation + 1, 0);
+			name_rev(parents->item, tip_name, generation + 1,
+				distance + 1, 0);
 		}
 	}
 }
 
 struct name_ref_data {
 	int tags_only;
+	int name_only;
 	const char *ref_filter;
 };
 
@@ -107,6 +114,10 @@ static int name_ref(const char *path, const unsigned char *sha1, int flags, void
 
 		if (!prefixcmp(path, "refs/heads/"))
 			path = path + 11;
+		else if (data->tags_only
+		    && data->name_only
+		    && !prefixcmp(path, "refs/tags/"))
+			path = path + 10;
 		else if (!prefixcmp(path, "refs/"))
 			path = path + 5;
 
@@ -146,7 +157,7 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 {
 	struct object_array revs = { 0, 0, NULL };
 	int as_is = 0, all = 0, transform_stdin = 0;
-	struct name_ref_data data = { 0, NULL };
+	struct name_ref_data data = { 0, 0, NULL };
 
 	git_config(git_default_config);
 
@@ -162,6 +173,9 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 			if (!strcmp(*argv, "--")) {
 				as_is = 1;
 				continue;
+			} else if (!strcmp(*argv, "--name-only")) {
+				data.name_only = 1;
+				continue;
 			} else if (!strcmp(*argv, "--tags")) {
 				data.tags_only = 1;
 				continue;
@@ -205,6 +219,8 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 		add_object_array((struct object *)commit, *argv, &revs);
 	}
 
+	if (cutoff)
+		cutoff = cutoff - CUTOFF_DATE_SLOP;
 	for_each_ref(name_ref, &data);
 
 	if (transform_stdin) {
@@ -260,16 +276,18 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
 			struct object * obj = get_indexed_object(i);
 			if (!obj)
 				continue;
-			printf("%s %s\n", sha1_to_hex(obj->sha1), get_rev_name(obj));
+			if (!data.name_only)
+				printf("%s ", sha1_to_hex(obj->sha1));
+			printf("%s\n", get_rev_name(obj));
 		}
 	} else {
 		int i;
-		for (i = 0; i < revs.nr; i++)
-			printf("%s %s\n",
-				revs.objects[i].name,
-				get_rev_name(revs.objects[i].item));
+		for (i = 0; i < revs.nr; i++) {
+			if (!data.name_only)
+				printf("%s ", revs.objects[i].name);
+			printf("%s\n", get_rev_name(revs.objects[i].item));
+		}
 	}
 
 	return 0;
 }
-