From dfe576f9379954ab8164da7521bef930d3af3948 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Mon, 18 Sep 2023 22:11:28 +0200
Subject: more work on new history logic

---
 src/include/taler_mhd_lib.h | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

(limited to 'src/include/taler_mhd_lib.h')

diff --git a/src/include/taler_mhd_lib.h b/src/include/taler_mhd_lib.h
index e4aa916e7..60c5b209d 100644
--- a/src/include/taler_mhd_lib.h
+++ b/src/include/taler_mhd_lib.h
@@ -476,6 +476,50 @@ TALER_MHD_parse_request_arg_timeout (struct MHD_Connection *connection,
   } while (0)
 
 
+/**
+ * Extract optional numeric limit argument from request.
+ *
+ * @param connection the MHD connection
+ * @param name name of the query parameter
+ * @param[out] off set to the offet, unchanged if the
+ *             option was not given
+ * @return #GNUNET_OK on success,
+ *         #GNUNET_NO if an error was returned on @a connection (caller should return #MHD_YES) and
+ *     #GNUNET_SYSERR if we failed to return an error (caller should return #MHD_NO)
+ */
+enum GNUNET_GenericReturnValue
+TALER_MHD_parse_request_arg_number (struct MHD_Connection *connection,
+                                    const char *name,
+                                    uint64_t *off);
+
+
+/**
+ * Extract optional numeric argument from request.
+ * Macro that *returns* #MHD_YES/#MHD_NO if the
+ * requested argument existed but failed to parse.
+ *
+ * @param connection the MHD connection
+ * @param name name of the argument to parse
+ * @param[out] off set to the given numeric value,
+ *    unchanged if value was not specified
+ */
+#define TALER_MHD_parse_request_number(connection,name,off)  \
+  do {                                                         \
+    switch (TALER_MHD_parse_request_arg_number (connection,   \
+                                                name, \
+                                                off))  \
+    {                      \
+    case GNUNET_SYSERR:    \
+      GNUNET_break (0);    \
+      return MHD_NO;       \
+    case GNUNET_NO:        \
+      GNUNET_break_op (0); \
+    case GNUNET_OK:        \
+      break;               \
+    }                      \
+  } while (0)
+
+
 /**
  * Extract fixed-size base32crockford encoded data from request argument.
  *
-- 
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