[PATCH] Documentation/repository-layout.txt typo

[git.git] / sha1_file.c

diff --git a/sha1_file.c b/sha1_file.c
index b6ebbc5..f4c742e 100644 (file)
--- 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);
 }
 
@@ -480,7 +487,7 @@ struct packed_git *parse_pack_index(unsigned char *sha1)
        return parse_pack_index_file(sha1, path);
 }
 
-struct packed_git *parse_pack_index_file(unsigned char *sha1, char *idx_path)
+struct packed_git *parse_pack_index_file(const unsigned char *sha1, char *idx_path)
 {
        struct packed_git *p;
        unsigned long idx_size;