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4709 mejdrech 1
/*
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 * Copyright (c) 2009 Lukas Mejdrech
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup net_app
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 *  @{
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 */
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/** @file
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 *  Generic application parsing functions implementation.
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 */
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#include <stdio.h>
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#include <string.h>
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#include "../err.h"
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#include "parse.h"
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int parse_parameter_int( int argc, char ** argv, int * index, int * value, const char * name, int offset ){
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    char *  rest;
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    if( offset ){
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        * value = strtol( argv[ * index ] + offset, & rest, 10 );
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    }else if(( * index ) + 1 < argc ){
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        ++ ( * index );
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        * value = strtol( argv[ * index ], & rest, 10 );
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    }else{
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        fprintf( stderr, "Command line error: missing %s\n", name );
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        return EINVAL;
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    }
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    if( rest && ( * rest )){
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        fprintf( stderr, "Command line error: %s unrecognized (%d: %s)\n", name, * index, argv[ * index ] );
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        return EINVAL;
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    }
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    return EOK;
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}
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int parse_parameter_string( int argc, char ** argv, int * index, char ** value, const char * name, int offset ){
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    if( offset ){
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        * value = argv[ * index ] + offset;
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    }else if(( * index ) + 1 < argc ){
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        ++ ( * index );
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        * value = argv[ * index ];
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    }else{
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        fprintf( stderr, "Command line error: missing %s\n", name );
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        return EINVAL;
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    }
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    return EOK;
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}
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int parse_parameter_name_int( int argc, char ** argv, int * index, int * value, const char * name, int offset, int ( * parse_value )( const char * value )){
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    ERROR_DECLARE;
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    char *  parameter;
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    ERROR_PROPAGATE( parse_parameter_string( argc, argv, index, & parameter, name, offset ));
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    * value = ( * parse_value )( parameter );
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    if(( * value ) == ENOENT ){
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        fprintf( stderr, "Command line error: unrecognized %s value (%d: %s)\n", name, * index, parameter );
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        return ENOENT;
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    }
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    return EOK;
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}
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void print_unrecognized( int index, const char * parameter ){
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    fprintf( stderr, "Command line error - unrecognized parameter (%d: %s)\n", index, parameter );
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}
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/** @}
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 */