parse_norm.cpp

Go to the documentation of this file.

/* This file is part of Cloudy and is copyright (C)1978-2013 by Gary J. Ferland and
 * others.  For conditions of distribution and use see copyright notice in license.txt */
/*ParseNorm parse parameters on the normalize command */
#include "cddefines.h"
#include "lines.h"
#include "input.h"
#include "parser.h"
#include "lines_service.h"
 
void ParseNorm(Parser &p)
{
        char chLabel[INPUT_LINE_LENGTH];
 
        DEBUG_ENTRY( "ParseNorm()" );
 
        /* these are flags saying that normalization line has been set */
        LineSave.lgNormSet = true;
 
        /* >>chng 01 aug 23, insist on a line label */
        /* 
         * get possible label - must do first since it can contain a number.*/
        /* is there a double quote on the line?  if so then this is a line label */
        if( p.nMatch(  "\"" ) )
        {
 
                /* GetQuote does the following -
                 * first copy original version of name into chLabel, 
                 * string does include null termination.
                 * set label in OrgCard and second parameter to spaces so 
                 * that not picked up below as keyword */
                p.GetQuote( chLabel , true );
                if( chLabel[4] != '\0' || strlen(chLabel) != 4 )
                {
                        fprintf( ioQQQ, " The label identifying the line on the normalize command must be exactly 4 char long.\n" );
                        fprintf( ioQQQ, " The command line was as follows:\n %s\n", input.chCardSav[input.nRead] );
                        fprintf( ioQQQ, " The label I found was: \"%s\", where were not 4 characters between the quotes.\n", chLabel );
                        fprintf( ioQQQ, "Sorry.\n" );
                        cdEXIT(EXIT_FAILURE);
                }
 
                /* copy first four char of label into caps, and null terminate*/
                cap4( LineSave.chNormLab, chLabel);
        }
        else
        {
                fprintf( ioQQQ, "The normalize command does not have a valid line.\n" );
                fprintf( ioQQQ, "A 4 char long line label must also be specified, between double quotes, like \"H  1\" 4861.\n" );
                fprintf( ioQQQ, "Sorry.\n" );
                cdEXIT(EXIT_FAILURE);
        }
 
        /* normalise lines to this rather than h-b, sec number is scale factor */
        LineSave.WavLNorm = (realnum)p.getWave();
        
        if( LineSave.WavLNorm < 0 )
        {
                fprintf( ioQQQ, "A negative wavelength does not make sense to me.\n" );
                fprintf( ioQQQ, "Sorry.\n" );
                cdEXIT(EXIT_FAILURE);
        }
 
        /* get the error assocated with the 4 significant figures that are visible,
         * wavelength of 0 (a continuum) has error of zero */
        LineSave.errorwave = WavlenErrorGet( LineSave.WavLNorm );
 
        LineSave.ScaleNormLine = p.FFmtRead();
 
        if( p.lgEOL() )
                LineSave.ScaleNormLine = 1.;
 
        /* confirm that scale factor is positive */
        if( LineSave.ScaleNormLine <= 0. )
        {
                fprintf( ioQQQ, " The scale factor for relative intensities must be greater than zero.\n" );
                fprintf( ioQQQ, "Sorry.\n" );
                cdEXIT(EXIT_FAILURE);
        }
        return;
}