X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=sha1_file.c;h=f4c742eed4736e121448eb8d24697aa812a0d158;hb=65a9289d7e5207ed66199db94593b31fa5550fde;hp=2d109f928bef6fe74f2a27af1419d9e82a7b9b33;hpb=da27f4f3f4c23d0276a372726ed050ed13e45168;p=git.git

diff --git a/sha1_file.c b/sha1_file.c
index 2d109f92..f4c742ee 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -50,22 +50,22 @@ static char *git_dir, *git_object_dir, *git_index_file, *git_refs_dir,
 	*git_graft_file;
 static void setup_git_env(void)
 {
-	git_dir = gitenv(GIT_DIR_ENVIRONMENT);
+	git_dir = getenv(GIT_DIR_ENVIRONMENT);
 	if (!git_dir)
 		git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
-	git_object_dir = gitenv(DB_ENVIRONMENT);
+	git_object_dir = getenv(DB_ENVIRONMENT);
 	if (!git_object_dir) {
 		git_object_dir = xmalloc(strlen(git_dir) + 9);
 		sprintf(git_object_dir, "%s/objects", git_dir);
 	}
 	git_refs_dir = xmalloc(strlen(git_dir) + 6);
 	sprintf(git_refs_dir, "%s/refs", git_dir);
-	git_index_file = gitenv(INDEX_ENVIRONMENT);
+	git_index_file = getenv(INDEX_ENVIRONMENT);
 	if (!git_index_file) {
 		git_index_file = xmalloc(strlen(git_dir) + 7);
 		sprintf(git_index_file, "%s/index", git_dir);
 	}
-	git_graft_file = gitenv(GRAFT_ENVIRONMENT);
+	git_graft_file = getenv(GRAFT_ENVIRONMENT);
 	if (!git_graft_file)
 		git_graft_file = strdup(git_path("info/grafts"));
 }
@@ -240,14 +240,21 @@ static struct alternate_object_database **alt_odb_tail;
  * SHA1, an extra slash for the first level indirection, and the
  * terminating NUL.
  */
-static void link_alt_odb_entries(const char *alt, const char *ep)
+static void link_alt_odb_entries(const char *alt, const char *ep, int sep)
 {
 	const char *cp, *last;
 	struct alternate_object_database *ent;
 
 	last = alt;
-	do {
-		for (cp = last; cp < ep && *cp != ':'; cp++)
+	while (last < ep) {
+		cp = last;
+		if (cp < ep && *cp == '#') {
+			while (cp < ep && *cp != sep)
+				cp++;
+			last = cp + 1;
+			continue;
+		}
+		for ( ; cp < ep && *cp != sep; cp++)
 			;
 		if (last != cp) {
 			/* 43 = 40-byte + 2 '/' + terminating NUL */
@@ -264,25 +271,28 @@ static void link_alt_odb_entries(const char *alt, const char *ep)
 			ent->base[pfxlen] = ent->base[pfxlen + 3] = '/';
 			ent->base[entlen-1] = 0;
 		}
-		while (cp < ep && *cp == ':')
+		while (cp < ep && *cp == sep)
 			cp++;
 		last = cp;
-	} while (cp < ep);
+	}
 }
 
 void prepare_alt_odb(void)
 {
 	char path[PATH_MAX];
-	char *map, *ep;
+	char *map;
 	int fd;
 	struct stat st;
-	char *alt = gitenv(ALTERNATE_DB_ENVIRONMENT) ? : "";
+	char *alt;
+
+	alt = getenv(ALTERNATE_DB_ENVIRONMENT);
+	if (!alt) alt = "";
 
 	sprintf(path, "%s/info/alternates", get_object_directory());
 	if (alt_odb_tail)
 		return;
 	alt_odb_tail = &alt_odb_list;
-	link_alt_odb_entries(alt, alt + strlen(alt));
+	link_alt_odb_entries(alt, alt + strlen(alt), ':');
 
 	fd = open(path, O_RDONLY);
 	if (fd < 0)
@@ -296,10 +306,7 @@ void prepare_alt_odb(void)
 	if (map == MAP_FAILED)
 		return;
 
-	/* Remove the trailing newline */
-	for (ep = map + st.st_size - 1; map < ep && ep[-1] == '\n'; ep--)
-		;
-	link_alt_odb_entries(map, ep);
+	link_alt_odb_entries(map, map + st.st_size, '\n');
 	munmap(map, st.st_size);
 }
 
@@ -476,12 +483,18 @@ struct packed_git *add_packed_git(char *path, int path_len)
 
 struct packed_git *parse_pack_index(unsigned char *sha1)
 {
+	char *path = sha1_pack_index_name(sha1);
+	return parse_pack_index_file(sha1, path);
+}
+
+struct packed_git *parse_pack_index_file(const unsigned char *sha1, char *idx_path)
+{
 	struct packed_git *p;
 	unsigned long idx_size;
 	void *idx_map;
-	char *path = sha1_pack_index_name(sha1);
+	char *path;
 
-	if (check_packed_git_idx(path, &idx_size, &idx_map))
+	if (check_packed_git_idx(idx_path, &idx_size, &idx_map))
 		return NULL;
 
 	path = sha1_pack_name(sha1);