(mu_scheme_autodetect_p): New function

@@ -127,6 +127,7 @@ extern int munre_subject  __P((const char *subject, const char **new_subject));
 extern char *mu_charset_lookup __P((char *lang, char *terr));
 
 extern int mu_true_answer_p __P((const char *p));
+extern int mu_scheme_autodetect_p __P((const char *scheme, const char **path));
 
 #ifdef __cplusplus
 }

@@ -51,6 +51,8 @@
 #include <mailutils/envelope.h>
 #include <mailutils/nls.h>
 
+#include <registrar0.h>
+
 /* convert a sequence of hex characters into an integer */
 
 unsigned long
@@ -1152,3 +1154,20 @@ mu_true_answer_p (const char *p)
     return 0;
   return -1;
 }
+
+/* Returns true if SCHEME represents a local mail folder. Stores
+   real folder path to PATH */
+int
+mu_scheme_autodetect_p (const char *scheme,  const char **path)
+{
+  *path = scheme;
+  if (strncmp (MU_FILE_SCHEME, scheme, MU_FILE_SCHEME_LEN) == 0)
+    {
+      *path += MU_FILE_SCHEME_LEN;
+      return 1;
+    }
+  if (strncmp (MU_PATH_SCHEME, scheme, MU_PATH_SCHEME_LEN) == 0)
+    return 1;
+  return 0;
+}
+