environment: remove namespace_len variable

Use 'skip_prefix' instead of 'starts_with' so that we can drop the need
to keep around 'namespace_len'.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/environment.c b/environment.c
index a73b08f..e035f63 100644 (file)
--- a/environment.c
+++ b/environment.c
@@ -98,7 +98,6 @@ char *git_work_tree_cfg;
 static char *work_tree;
 
 static const char *namespace;
-static size_t namespace_len;
 
 static const char *super_prefix;
 
@@ -190,7 +189,6 @@ void setup_git_env(void)
        git_replace_ref_base = xstrdup(replace_ref_base ? replace_ref_base
                                                          : "refs/replace/");
        namespace = expand_namespace(getenv(GIT_NAMESPACE_ENVIRONMENT));
-       namespace_len = strlen(namespace);
        shallow_file = getenv(GIT_SHALLOW_FILE_ENVIRONMENT);
        if (shallow_file)
                set_alternate_shallow_file(shallow_file, 0);
@@ -231,9 +229,10 @@ const char *get_git_namespace(void)
 
 const char *strip_namespace(const char *namespaced_ref)
 {
-       if (!starts_with(namespaced_ref, get_git_namespace()))
-               return NULL;
-       return namespaced_ref + namespace_len;
+       const char *out;
+       if (skip_prefix(namespaced_ref, get_git_namespace(), &out))
+               return out;
+       return NULL;
 }
 
 const char *get_super_prefix(void)