source: branches/items/GDE/MAFFT/mafft-7.055-with-extensions/core/countlen.c

#include "mltaln.h"

#define DEBUG 0

void arguments( int argc, char *argv[] )
{
    int c;

    while( --argc > 0 && (*++argv)[0] == '-' )
        {
        while ( (c = *++argv[0]) )
                {
            switch( c )
            {
                                case 'i':
                                        inputfile = *++argv;
                                        fprintf( stderr, "inputfile = %s\n", inputfile );
                                        --argc;
                                        goto nextoption;
                default:
                    fprintf( stderr, "illegal option %c\n", c );
                    argc = 0;
                    break;
            }
                }
                nextoption:
                        ;
        }
    if( argc != 0 ) 
    {
        fprintf( stderr, "options: Check source file !\n" );
        exit( 1 );
    }
}


int main( int argc, char *argv[] )
{
        FILE *infp;
        int nlenmin;

        arguments( argc, argv );

        if( inputfile )
        {
                infp = fopen( inputfile, "r" );
                if( !infp )
                {
                        fprintf( stderr, "Cannot open %s\n", inputfile );
                        exit( 1 );
                }
        }
        else
                infp = stdin;

        dorp = NOTSPECIFIED;
        getnumlen_nogap( infp, &nlenmin );

        fprintf( stdout, "%d x %d - %d %c\n", njob, nlenmax, nlenmin, dorp );
        return( 0 );
}