t3700-add: add a POSIXPERM prerequisite to a new test

diff --git a/strbuf.c b/strbuf.c
index bfbd81632e8d2e5584c4eeac0d17aa4b4c2525d8..a88496030b7053a543173c299bd9f54b923db2ec 100644 (file)
--- a/strbuf.c
+++ b/strbuf.c
@@ -1,4 +1,5 @@
 #include "cache.h"
+#include "refs.h"
 
 int prefixcmp(const char *str, const char *prefix)
 {
@@ -357,3 +358,19 @@ int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint)
 
        return len;
 }
+
+int strbuf_branchname(struct strbuf *sb, const char *name)
+{
+       int len = strlen(name);
+       if (interpret_branch_name(name, sb) == len)
+               return 0;
+       strbuf_add(sb, name, len);
+       return len;
+}
+
+int strbuf_check_branch_ref(struct strbuf *sb, const char *name)
+{
+       strbuf_branchname(sb, name);
+       strbuf_splice(sb, 0, 0, "refs/heads/", 11);
+       return check_ref_format(sb->buf);
+}