enter_repo: convert fixed-size buffers to strbufs

diff --git a/sha1_file.c b/sha1_file.c
index 592226eb7bb9e961b357b11f678773f7ac74ab6f..c26fdcbd8840ede1865210a09ee6c6f85794985b 100644 (file)
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -208,44 +208,25 @@ const char *sha1_file_name(const unsigned char *sha1)
  * provided by the caller.  which should be "pack" or "idx".
  */
 static char *sha1_get_pack_name(const unsigned char *sha1,
-                               char **name, char **base, const char *which)
+                               struct strbuf *buf,
+                               const char *which)
 {
-       static const char hex[] = "0123456789abcdef";
-       char *buf;
-       int i;
-
-       if (!*base) {
-               const char *sha1_file_directory = get_object_directory();
-               int len = strlen(sha1_file_directory);
-               *base = xmalloc(len + 60);
-               sprintf(*base, "%s/pack/pack-1234567890123456789012345678901234567890.%s",
-                       sha1_file_directory, which);
-               *name = *base + len + 11;
-       }
-
-       buf = *name;
-
-       for (i = 0; i < 20; i++) {
-               unsigned int val = *sha1++;
-               *buf++ = hex[val >> 4];
-               *buf++ = hex[val & 0xf];
-       }
-
-       return *base;
+       strbuf_reset(buf);
+       strbuf_addf(buf, "%s/pack/pack-%s.%s", get_object_directory(),
+                   sha1_to_hex(sha1), which);
+       return buf->buf;
 }
 
 char *sha1_pack_name(const unsigned char *sha1)
 {
-       static char *name, *base;
-
-       return sha1_get_pack_name(sha1, &name, &base, "pack");
+       static struct strbuf buf = STRBUF_INIT;
+       return sha1_get_pack_name(sha1, &buf, "pack");
 }
 
 char *sha1_pack_index_name(const unsigned char *sha1)
 {
-       static char *name, *base;
-
-       return sha1_get_pack_name(sha1, &name, &base, "idx");
+       static struct strbuf buf = STRBUF_INIT;
+       return sha1_get_pack_name(sha1, &buf, "idx");
 }
 
 struct alternate_object_database *alt_odb_list;
@@ -671,13 +652,15 @@ static int check_packed_git_idx(const char *path, struct packed_git *p)
 int open_pack_index(struct packed_git *p)
 {
        char *idx_name;
+       size_t len;
        int ret;
 
        if (p->index_data)
                return 0;
 
-       idx_name = xstrdup(p->pack_name);
-       strcpy(idx_name + strlen(idx_name) - strlen(".pack"), ".idx");
+       if (!strip_suffix(p->pack_name, ".pack", &len))
+               die("BUG: pack_name does not end in .pack");
+       idx_name = xstrfmt("%.*s.idx", (int)len, p->pack_name);
        ret = check_packed_git_idx(idx_name, p);
        free(idx_name);
        return ret;