parse_cmd.cpp

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/*
 * parse_cmd.cpp
 *
 *  Created on: Sep 4, 2017
 *
 *      Functions for parse command line
 *
 */

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


/**
 *  \brief  Get integer value from command line
 *
 *  format command line:
 *  <name1> <value1> <name2> <value2>
 *
 *  \param  argc        number of argument
 *  \param  argv        pointers to arguments
 *  \param  name        key of argument
 *  \param  defValue    default value for arguments
 *
 *  \return   value of argument or default value of argument
 */
int GetFromCommnadLine(int argc, BRDCHAR **argv, const BRDCHAR* name, int defValue)
{
    int ret=defValue;
    for( int ii=1; ii<argc-1; ii++ )
    {
        if( 0==BRDC_strcmp( argv[ii], name) )
        {
            ret=BRDC_atoi( argv[ii+1] );
        }
    }
    return ret;
}


/**
 *  \brief  Get string value from command line
 *
 *  format command line:
 *  <name1> <text1> <name2> <text2>
 *
 *  \param  argc        number of argument
 *  \param  argv        pointers to arguments
 *  \param  name        key of argument
 *  \param  defValue    default value for arguments
 *  \param  dst         pointer to destination string, NULL - do not copy
 *  \param  dstLen      max number of chars in the dst
 *
 *  \return   0 - name not found, 1 - found only name, 2 - found name and text
 */
 int GetStrFromCommnadLine(int argc, BRDCHAR **argv, const BRDCHAR* name, BRDCHAR* defValue, BRDCHAR* dst, int dstLen )
{
    int ret=0;
    int index=0;
    for( int ii=1; ii<argc; ii++ )
    {
        if( 0==BRDC_strcmp( argv[ii], name) )
        {
            if( ii==(argc-1) )
                ret=1;
            else
            {
                ret=2; index=ii;
            }

            break;
        }
    }
    if( NULL!=dst )
    {
        if( 2==ret )
            BRDC_strncpy( dst, argv[index+1], dstLen );
        else
            BRDC_strncpy( dst, defValue, dstLen );
        dst[dstLen-1]=0;
    }
    return ret;
}