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/*
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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