parse_init.cpp

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/* This file is part of Cloudy and is copyright (C)1978-2022 by Gary J. Ferland and
 * others.  For conditions of distribution and use see copyright notice in license.txt */
/*ParseInit bring an initialization file into input stream before parse  */
#include "cddefines.h"
#include "input.h"
#include "trace.h"
#include "cddrive.h"
#include "parser.h"

void ParseInit(Parser &p)
{
        DEBUG_ENTRY( "ParseInit()" );

        /* bring an initialization file into input stream before parsing */

        /* check whether single quote on line, this was used in c90 */
        if( p.nMatch( "\'" ) )
        {
                fprintf( ioQQQ, 
                        " ParseInit found a single quote on this line.  This was used"
                         " for file names in C90, but double quotes are used now.\n" );
                fprintf( ioQQQ, " The single quote has been ignored.\n" );
        }

        string chName;
        if( p.nMatch( "\"" ) )
        {
                /* 
                 * if a quote occurs on the line then get the ini file name 
                 * this will also set the name in chCard and OrgCard to spaces
                 * so later keywords do not key off it
                 */
                if( p.GetQuote( chName ) )
                        p.StringError();
        }
        else
        {
                /* no quote appeared, so this is the default name, cloudy.ini */
                chName = "cloudy.ini";
        }

        /* at this point we have init file name, now make full name 
         * this can be a local file, or on the path if the key path appears */

        FILE *ioInitFile;
        /* option to get cloudy.ini from a path */
        if( p.nMatch("PATH") )
        {
                ioInitFile = open_data( chName.c_str(), "r" );
        }
        else
        {
                /* just use file name, and try to open file in current directory first */
                ioInitFile = open_data( chName.c_str(), "r", AS_LOCAL_DATA );
        }

        ++input.curInclLevel;

        /* at this point the init file is open, now bring it into the command stack */
        char chLocal[INPUT_LINE_LENGTH];
        while( read_whole_line(chLocal,(int)sizeof(chLocal),ioInitFile) != NULL )
        {
                if( lgInputEOF(chLocal) )
                        break;

                /* stuff the command line into the internal stack */
                (void)cdRead(chLocal);
        }

        --input.curInclLevel;

        fclose(ioInitFile);
}