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/*********************************************************************
Example source code for defining custom arg_xxx data types for the
argtable2 command line parser library. It shows how to make custom
arg_xxx data types with additional error checking capabilities.
The example code implements a custom arg_xxx data type which accepts
a <double> value that must lie within a given range of values.
usage: argcustom [-v] <scalar> [-x <double>] [-y <double>]... [--help]
<scalar> <double> value in range [0.0, 1.0]
-x <double> x coeff in range [-1.0, 1.0]
-y <double> y coeff in range [0.5, 0.9]
--help print this help and exit
Copyright (C) 1998-2001,2003-2011 Stewart Heitmann
sheitmann@users.sourceforge.net
This is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This software 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
USA.
**********************************************************************/
#include <argtable2.h>
#include "argxxx.h"
int main(int argc, char **argv)
{
struct arg_xxx *scalar = arg_xxx1(NULL, NULL, "<scalar>", 0.0, 1.0, "<double> value in range [0.0, 1.0]");
struct arg_xxx *x = arg_xxx0("x", NULL, "<double>", -1.0, 1.0, "x coeff in range [-1.0, 1.0]");
struct arg_xxx *y = arg_xxxn("y", NULL, "<double>", 0,argc+2, 0.5, 0.9, "y coeff in range [0.5, 0.9]");
struct arg_lit *help = arg_lit0(NULL,"help", "print this help and exit");
struct arg_end *end = arg_end(20);
void* argtable[] = {scalar,x,y,help,end};
const char* progname = "argcustom";
int nerrors;
int exitcode=0;
int i;
/* verify the argtable[] entries were allocated sucessfully */
if (arg_nullcheck(argtable) != 0)
{
/* NULL entries were detected, some allocations must have failed */
printf("%s: insufficient memory\n",progname);
exitcode=1;
goto exit;
}
/* Parse the command line as defined by argtable[] */
nerrors = arg_parse(argc,argv,argtable);
/* special case: '--help' takes precedence over error reporting */
if (help->count > 0)
{
printf("Usage: %s", progname);
arg_print_syntax(stdout,argtable,"\n");
printf("This program demonstrates the use of the argtable2 library\n");
printf("for parsing command line arguments.\n");
arg_print_glossary(stdout,argtable," %-25s %s\n");
exitcode=0;
goto exit;
}
/* If the parser returned any errors then display them and exit */
if (nerrors > 0)
{
/* Display the error details contained in the arg_end struct.*/
arg_print_errors(stdout,end,progname);
printf("Try '%s --help' for more information.\n",progname);
exitcode=1;
goto exit;
}
/* only get here is command line arguments were parsed sucessfully */
printf("scalar = %f\n", scalar->data[0]);
if (x->count > 0)
printf("x = %f\n", x->data[0]);
for (i=0; i<y->count; i++)
printf("y[%d] = %f\n", i, y->data[i]);
exit:
/* deallocate each non-null entry in argtable[] */
arg_freetable(argtable,sizeof(argtable)/sizeof(argtable[0]));
return exitcode;
}
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