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  1. /*
  2.  * Copyright (c) 2009 Lukas Mejdrech
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup net_app
  30.  *  @{
  31.  */
  32.  
  33. /** @file
  34.  *  Generic application parsing functions implementation.
  35.  */
  36.  
  37. #include <stdio.h>
  38. #include <string.h>
  39.  
  40. #include "../err.h"
  41.  
  42. #include "parse.h"
  43.  
  44. int parse_parameter_int( int argc, char ** argv, int * index, int * value, const char * name, int offset ){
  45.     char *  rest;
  46.  
  47.     if( offset ){
  48.         * value = strtol( argv[ * index ] + offset, & rest, 10 );
  49.     }else if(( * index ) + 1 < argc ){
  50.         ++ ( * index );
  51.         * value = strtol( argv[ * index ], & rest, 10 );
  52.     }else{
  53.         fprintf( stderr, "Command line error: missing %s\n", name );
  54.         return EINVAL;
  55.     }
  56.     if( rest && ( * rest )){
  57.         fprintf( stderr, "Command line error: %s unrecognized (%d: %s)\n", name, * index, argv[ * index ] );
  58.         return EINVAL;
  59.     }
  60.     return EOK;
  61. }
  62.  
  63. int parse_parameter_string( int argc, char ** argv, int * index, char ** value, const char * name, int offset ){
  64.     if( offset ){
  65.         * value = argv[ * index ] + offset;
  66.     }else if(( * index ) + 1 < argc ){
  67.         ++ ( * index );
  68.         * value = argv[ * index ];
  69.     }else{
  70.         fprintf( stderr, "Command line error: missing %s\n", name );
  71.         return EINVAL;
  72.     }
  73.     return EOK;
  74. }
  75.  
  76. int parse_parameter_name_int( int argc, char ** argv, int * index, int * value, const char * name, int offset, int ( * parse_value )( const char * value )){
  77.     ERROR_DECLARE;
  78.  
  79.     char *  parameter;
  80.  
  81.     ERROR_PROPAGATE( parse_parameter_string( argc, argv, index, & parameter, name, offset ));
  82.     * value = ( * parse_value )( parameter );
  83.     if(( * value ) == ENOENT ){
  84.         fprintf( stderr, "Command line error: unrecognized %s value (%d: %s)\n", name, * index, parameter );
  85.         return ENOENT;
  86.     }
  87.     return EOK;
  88. }
  89.  
  90. void print_unrecognized( int index, const char * parameter ){
  91.     fprintf( stderr, "Command line error - unrecognized parameter (%d: %s)\n", index, parameter );
  92. }
  93.  
  94. /** @}
  95.  */
  96.