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, char **argv, const char* name, int defValue)
{
    int ret=defValue;
    for( int ii=1; ii<argc-1; ii++ )
    {
        if( 0==strcmp( argv[ii], name) )
        {
            ret=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, char **argv, const char* name, char* defValue, char* dst, int dstLen )
{
        int ret=0;
        int index=0;
        for( int ii=1; ii<argc; ii++ )
    {
        if( 0==strcmp( argv[ii], name) )
        {
                if( ii==(argc-1) )
                        ret=1;
                else
                {
                        ret=2; index=ii;
                }

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