From 59398cfd76ed01df0ba5f33022727047afd6b270 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Sun, 19 Jan 2020 20:33:07 +0100
Subject: separate util.c and url.c

---
 src/util/getopt.c | 87 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 src/util/getopt.c

(limited to 'src/util/getopt.c')

diff --git a/src/util/getopt.c b/src/util/getopt.c
new file mode 100644
index 000000000..b8948bbb2
--- /dev/null
+++ b/src/util/getopt.c
@@ -0,0 +1,87 @@
+/*
+  This file is part of TALER
+  Copyright (C) 2014-2020 Taler Systems SA
+
+  TALER is free software; you can redistribute it and/or modify it under the
+  terms of the GNU General Public License as published by the Free Software
+  Foundation; either version 3, or (at your option) any later version.
+
+  TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+  A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License along with
+  TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file getopt.c
+ * @brief Helper functions for parsing Taler-specific command-line arguments
+ * @author Florian Dold
+ */
+#include "platform.h"
+#include "taler_util.h"
+
+
+/**
+ * Set an option with an amount from the command line.  A pointer to
+ * this function should be passed as part of the 'struct
+ * GNUNET_GETOPT_CommandLineOption' array to initialize options of
+ * this type.
+ *
+ * @param ctx command line processing context
+ * @param scls additional closure (will point to the `struct TALER_Amount`)
+ * @param option name of the option
+ * @param value actual value of the option as a string.
+ * @return #GNUNET_OK if parsing the value worked
+ */
+static int
+set_amount (struct GNUNET_GETOPT_CommandLineProcessorContext *ctx,
+            void *scls,
+            const char *option,
+            const char *value)
+{
+  struct TALER_Amount *amount = scls;
+
+  (void) ctx;
+  if (GNUNET_OK !=
+      TALER_string_to_amount (value,
+                              amount))
+  {
+    fprintf (stderr,
+             _ ("Failed to parse amount in option `%s'\n"),
+             option);
+    return GNUNET_SYSERR;
+  }
+
+  return GNUNET_OK;
+}
+
+
+/**
+ * Allow user to specify an amount on the command line.
+ *
+ * @param shortName short name of the option
+ * @param name long name of the option
+ * @param argumentHelp help text for the option argument
+ * @param description long help text for the option
+ * @param[out] amount set to the amount specified at the command line
+ */
+struct GNUNET_GETOPT_CommandLineOption
+TALER_getopt_get_amount (char shortName,
+                         const char *name,
+                         const char *argumentHelp,
+                         const char *description,
+                         struct TALER_Amount *amount)
+{
+  struct GNUNET_GETOPT_CommandLineOption clo = {
+    .shortName =  shortName,
+    .name = name,
+    .argumentHelp = argumentHelp,
+    .description = description,
+    .require_argument = 1,
+    .processor = &set_amount,
+    .scls = (void *) amount
+  };
+
+  return clo;
+}
-- 
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