source: mainline/uspace/srv/net/app/parse.c@ 01a9ef5

/*
 * Copyright (c) 2009 Lukas Mejdrech
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup net_app
 *  @{
 */

/** @file
 *  Generic application parsing functions implementation.
 */

#include <stdio.h>
#include <string.h>

#include "../err.h"

#include "parse.h"

int parse_parameter_int( int argc, char ** argv, int * index, int * value, const char * name, int offset ){
        char *  rest;

        if( offset ){
                * value = strtol( argv[ * index ] + offset, & rest, 10 );
        }else if(( * index ) + 1 < argc ){
                ++ ( * index );
                * value = strtol( argv[ * index ], & rest, 10 );
        }else{
                fprintf( stderr, "Command line error: missing %s\n", name );
                return EINVAL;
        }
        if( rest && ( * rest )){
                fprintf( stderr, "Command line error: %s unrecognized (%d: %s)\n", name, * index, argv[ * index ] );
                return EINVAL;
        }
        return EOK;
}

int parse_parameter_string( int argc, char ** argv, int * index, char ** value, const char * name, int offset ){
        if( offset ){
                * value = argv[ * index ] + offset;
        }else if(( * index ) + 1 < argc ){
                ++ ( * index );
                * value = argv[ * index ];
        }else{
                fprintf( stderr, "Command line error: missing %s\n", name );
                return EINVAL;
        }
        return EOK;
}

int parse_parameter_name_int( int argc, char ** argv, int * index, int * value, const char * name, int offset, int ( * parse_value )( const char * value )){
        ERROR_DECLARE;

        char *  parameter;

        ERROR_PROPAGATE( parse_parameter_string( argc, argv, index, & parameter, name, offset ));
        * value = ( * parse_value )( parameter );
        if(( * value ) == ENOENT ){
                fprintf( stderr, "Command line error: unrecognized %s value (%d: %s)\n", name, * index, parameter );
                return ENOENT;
        }
        return EOK;
}

void print_unrecognized( int index, const char * parameter ){
        fprintf( stderr, "Command line error - unrecognized parameter (%d: %s)\n", index, parameter );
}

/** @}
 */