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get_option_pos.c

/* GAdmin-OpenVPN - An easy to use GTK+ frontend for the openvpn server.
 * Copyright (C) 2008 Magnus Loef <magnus-swe@telia.com> 
 *
 * This program 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 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
*/


#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "get_option_pos.h"



int get_option_pos(char *line, int optnum)
{
    int z   = 0;
    int num = 1;
    long i  = 0;

    if( optnum == 0 )
    {
      for(i=0; line[i]!='\0'; i++)
        if( line[i]!=' ' && line[i]!='\t' )
          break;

        return i;
    }

    if( optnum == 1 )
    {
      for(i=0; line[i]!='\0'; i++)
        if( line[i]!=' ' && line[i]!='\t' )
          break;

      for(i=i; line[i]!='\0'; i++)
        if( line[i]==' ' && line[i+1]!=' ' )
          break;
      i++;
        return i;
    }


    /* Scroll past the first option declaration
       to the first option value */
    if( line!=NULL && strlen(line) > 0 )
    {
      for(i=0; line[i]!='\0'; i++)
      {
          if( line[i]!=' ' )
            break;
      }
      for(i=i; line[i]!='\0'; i++)
      {
          if( line[i-1]==' ' && line[i]!=' ' )
            break;
      }
    }


    /* One small step for man, one giant leap for mankind :) */
    i++;


    for(z=0; z<=optnum; z++)
    {
      if( num == optnum )
        break;

      /* Scroll to the beginning of the option value */
      if( line!=NULL && strlen(line) > 0 )
      {
          for(i=i; line[i]!='\0'; i++)
          {
            if( line[i-1]==' ' && line[i]!=' ' )
            {
                num++;
                break;
            }
          }
      }
    }

    return i;
}

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