X-Git-Url: https://diplodocus.org/git/nmh/blobdiff_plain/8a4d2247f60879752e29203e7a01c49910ed199c..c4f704eb5309d15ffb7c15fc67074f22d0647951:/sbr/utils.c

diff --git a/sbr/utils.c b/sbr/utils.c
index b7580252..2e61df89 100644
--- a/sbr/utils.c
+++ b/sbr/utils.c
@@ -358,9 +358,21 @@ nmh_strcasestr (const char *s1, const char *s2) {
 }
 
 
-/* EndsWithC returns true if non-NULL string s ends with a c before the
+/* HasPrefix returns true if non-NULL s starts with non-NULL prefix. */
+bool HasPrefix(const char *s, const char *prefix)
+{
+    while (*s && *s == *prefix) {
+        s++;
+        prefix++;
+    }
+
+    return *prefix == '\0';
+}
+
+
+/* HasSuffixC returns true if non-NULL string s ends with a c before the
  * terminating NUL. */
-bool EndsWithC(char *s, int c)
+bool HasSuffixC(const char *s, int c)
 {
     return *s && s[strlen(s) - 1] == c;
 }
@@ -490,7 +502,7 @@ nmh_version_changed (int older) {
            break for versions with multiple decimal points, etc. */
         const float current_version = strtof (VERSION, NULL);
         const float old_version =
-            context_version  &&  strncmp (context_version, "nmh-", 4) == 0
+            context_version  &&  HasPrefix(context_version, "nmh-")
             ?  strtof (context_version + 4, NULL)
             :  99999999;