X-Git-Url: https://git.octo.it/?p=git.git;a=blobdiff_plain;f=sha1_name.c;h=cd85d1fa0f9f2afb4e159cb635db435e75ef3e58;hp=dc6835520ccfd4838b47a4af81ccf139f55e1801;hb=HEAD;hpb=e7cef45fbceab9558adce82a26b96f15af47772c

diff --git a/sha1_name.c b/sha1_name.c
index dc683552..cd85d1fa 100644
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -4,6 +4,7 @@
 #include "tree.h"
 #include "blob.h"
 #include "tree-walk.h"
+#include "refs.h"
 
 static int find_short_object_filename(int len, const char *name, unsigned char *sha1)
 {
@@ -245,36 +246,60 @@ static int get_sha1_basic(const char *str, int len, unsigned char *sha1)
 		"refs/remotes/%.*s/HEAD",
 		NULL
 	};
-	const char **p;
-	const char *warning = "warning: refname '%.*s' is ambiguous.\n";
-	char *pathname;
-	int already_found = 0;
+	static const char *warning = "warning: refname '%.*s' is ambiguous.\n";
+	const char **p, *pathname;
+	char *real_path = NULL;
+	int refs_found = 0, am;
+	unsigned long at_time = (unsigned long)-1;
 	unsigned char *this_result;
 	unsigned char sha1_from_ref[20];
 
 	if (len == 40 && !get_sha1_hex(str, sha1))
 		return 0;
 
+	/* At a given period of time? "@{2 hours ago}" */
+	for (am = 1; am < len - 1; am++) {
+		if (str[am] == '@' && str[am+1] == '{' && str[len-1] == '}') {
+			int date_len = len - am - 3;
+			char *date_spec = xmalloc(date_len + 1);
+			safe_strncpy(date_spec, str + am + 2, date_len + 1);
+			at_time = approxidate(date_spec);
+			free(date_spec);
+			len = am;
+			break;
+		}
+	}
+
 	/* Accept only unambiguous ref paths. */
 	if (ambiguous_path(str, len))
 		return -1;
 
 	for (p = fmt; *p; p++) {
-		this_result = already_found ? sha1_from_ref : sha1;
-		pathname = git_path(*p, len, str);
-		if (!read_ref(pathname, this_result)) {
-			if (warn_ambiguous_refs) {
-				if (already_found)
-					fprintf(stderr, warning, len, str);
-				already_found++;
-			}
-			else
-				return 0;
+		this_result = refs_found ? sha1_from_ref : sha1;
+		pathname = resolve_ref(git_path(*p, len, str), this_result, 1);
+		if (pathname) {
+			if (!refs_found++)
+				real_path = strdup(pathname);
+			if (!warn_ambiguous_refs)
+				break;
 		}
 	}
-	if (already_found)
-		return 0;
-	return -1;
+
+	if (!refs_found)
+		return -1;
+
+	if (warn_ambiguous_refs && refs_found > 1)
+		fprintf(stderr, warning, len, str);
+
+	if (at_time != (unsigned long)-1) {
+		read_ref_at(
+			real_path + strlen(git_path(".")) - 1,
+			at_time,
+			sha1);
+	}
+
+	free(real_path);
+	return 0;
 }
 
 static int get_sha1_1(const char *name, int len, unsigned char *sha1);
@@ -332,7 +357,7 @@ static int peel_onion(const char *name, int len, unsigned char *sha1)
 {
 	unsigned char outer[20];
 	const char *sp;
-	const char *type_string = NULL;
+	unsigned int expected_type = 0;
 	struct object *o;
 
 	/*
@@ -356,13 +381,13 @@ static int peel_onion(const char *name, int len, unsigned char *sha1)
 
 	sp++; /* beginning of type name, or closing brace for empty */
 	if (!strncmp(commit_type, sp, 6) && sp[6] == '}')
-		type_string = commit_type;
+		expected_type = TYPE_COMMIT;
 	else if (!strncmp(tree_type, sp, 4) && sp[4] == '}')
-		type_string = tree_type;
+		expected_type = TYPE_TREE;
 	else if (!strncmp(blob_type, sp, 4) && sp[4] == '}')
-		type_string = blob_type;
+		expected_type = TYPE_BLOB;
 	else if (sp[0] == '}')
-		type_string = NULL;
+		expected_type = TYPE_NONE;
 	else
 		return -1;
 
@@ -372,7 +397,7 @@ static int peel_onion(const char *name, int len, unsigned char *sha1)
 	o = parse_object(outer);
 	if (!o)
 		return -1;
-	if (!type_string) {
+	if (!expected_type) {
 		o = deref_tag(o, name, sp - name - 2);
 		if (!o || (!o->parsed && !parse_object(o->sha1)))
 			return -1;
@@ -387,18 +412,18 @@ static int peel_onion(const char *name, int len, unsigned char *sha1)
 		while (1) {
 			if (!o || (!o->parsed && !parse_object(o->sha1)))
 				return -1;
-			if (o->type == type_string) {
+			if (o->type == expected_type) {
 				memcpy(sha1, o->sha1, 20);
 				return 0;
 			}
-			if (o->type == tag_type)
+			if (o->type == TYPE_TAG)
 				o = ((struct tag*) o)->tagged;
-			else if (o->type == commit_type)
+			else if (o->type == TYPE_COMMIT)
 				o = &(((struct commit *) o)->tree->object);
 			else
 				return error("%.*s: expected %s type, but the object dereferences to %s type",
-					     len, name, type_string,
-					     o->type);
+					     len, name, typename(expected_type),
+					     typename(o->type));
 			if (!o->parsed)
 				parse_object(o->sha1);
 		}
@@ -456,7 +481,7 @@ static int get_sha1_1(const char *name, int len, unsigned char *sha1)
  */
 int get_sha1(const char *name, unsigned char *sha1)
 {
-	int ret;
+	int ret, bracket_depth;
 	unsigned unused;
 	int namelen = strlen(name);
 	const char *cp;
@@ -502,8 +527,15 @@ int get_sha1(const char *name, unsigned char *sha1)
 		}
 		return -1;
 	}
-	cp = strchr(name, ':');
-	if (cp) {
+	for (cp = name, bracket_depth = 0; *cp; cp++) {
+		if (*cp == '{')
+			bracket_depth++;
+		else if (bracket_depth && *cp == '}')
+			bracket_depth--;
+		else if (!bracket_depth && *cp == ':')
+			break;
+	}
+	if (*cp == ':') {
 		unsigned char tree_sha1[20];
 		if (!get_sha1_1(name, cp-name, tree_sha1))
 			return get_tree_entry(tree_sha1, cp+1, sha1,