[PATCH v2 08/16] builtin/update-index: convert to using the_hash_algo

[brian m. carlson]

Switch from using GIT_SHA1_HEXSZ to the_hash_algo to make the parsing of
the index information hash independent.

Signed-off-by: brian m. carlson <sand...@crustytoothpaste.net>
---
 builtin/update-index.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/builtin/update-index.c b/builtin/update-index.c
index a8709a26ec..031cef5229 100644
--- a/builtin/update-index.c
+++ b/builtin/update-index.c
@@ -492,6 +492,7 @@ static void update_one(const char *path)
 
 static void read_index_info(int nul_term_line)
 {
+       const int hexsz = the_hash_algo->hexsz;
        struct strbuf buf = STRBUF_INIT;
        struct strbuf uq = STRBUF_INIT;
        strbuf_getline_fn getline_fn;
@@ -529,7 +530,7 @@ static void read_index_info(int nul_term_line)
                mode = ul;
 
                tab = strchr(ptr, '\t');
-               if (!tab || tab - ptr < GIT_SHA1_HEXSZ + 1)
+               if (!tab || tab - ptr < hexsz + 1)
                        goto bad_line;
 
                if (tab[-2] == ' ' && '0' <= tab[-1] && tab[-1] <= '3') {
@@ -542,8 +543,8 @@ static void read_index_info(int nul_term_line)
                        ptr = tab + 1; /* point at the head of path */
                }
 
-               if (get_oid_hex(tab - GIT_SHA1_HEXSZ, &oid) ||
-                       tab[-(GIT_SHA1_HEXSZ + 1)] != ' ')
+               if (get_oid_hex(tab - hexsz, &oid) ||
+                       tab[-(hexsz + 1)] != ' ')
                        goto bad_line;
 
                path_name = ptr;
@@ -571,7 +572,7 @@ static void read_index_info(int nul_term_line)
                         * ptr[-1] points at tab,
                         * ptr[-41] is at the beginning of sha1
                         */
-                       ptr[-(GIT_SHA1_HEXSZ + 2)] = ptr[-1] = 0;
+                       ptr[-(hexsz + 2)] = ptr[-1] = 0;
                        if (add_cacheinfo(mode, &oid, path_name, stage))
                                die("git update-index: unable to update %s",
                                    path_name);