-use nicer enum

src/include/taler_json_lib.h

@@ -334,6 +334,19 @@ TALER_JSON_exchange_wire_signature_check (
   const struct TALER_MasterPublicKeyP *master_pub);
 
 
+/**
+ * Validate payto:// account URL (only account information,
+ * wire subject and amount are ignored).
+ *
+ * @param payto_uri URL to parse
+ * @return #GNUNET_YES if @a payto_uri is a valid payto://iban URI
+ *         #GNUNET_NO if @a payto_uri  is a payto URI of an unsupported type (but may be valid)
+ *         #GNUNET_SYSERR if the account incorrect or this is not a payto://-URI at all
+ */
+enum GNUNET_GenericReturnValue
+TALER_JSON_validate_payto (const char *payto_uri);
+
+
 /**
  * Create a signed wire statement for the given account.
  *

src/json/json_wire.c

@@ -222,7 +222,7 @@ cmp_country_code (const void *ptr1,
  * @param iban the IBAN number to validate
  * @return #GNUNET_YES if correctly formatted; #GNUNET_NO if not
  */
-static int
+static enum GNUNET_GenericReturnValue
 validate_iban (const char *iban)
 {
   char cc[2];
@@ -331,7 +331,7 @@ validate_iban (const char *iban)
  *         #GNUNET_NO if @a account_url is a payto URI of a different type,
  *         #GNUNET_SYSERR if the IBAN (checksum) is incorrect or this is not a payto://-URI
  */
-static int
+static enum GNUNET_GenericReturnValue
 validate_payto_iban (const char *account_url)
 {
   const char *iban;