////
//// Canon Inkjet Printer Driver for Microsoft Windows
//// Version 3.00
//// Copyright CANON INC. 2013 All Rights Reserved
////


function getSchemas(driverProperties, printerStream, schemaRequests, printerSchemaResponses)
{
    var nRetVal = 0;
    var index = 0;
	var bFlagStatus = false;
	var statusResponse = '';
	var key = '';
	var requestSchema = '';
	
	if( printerStream  === null ||
	    schemaRequests === null ||
	    printerSchemaResponses === null ) {
		return nRetVal;
	}

	for ( index = 0; index < schemaRequests.length; index++ ) {
		key = schemaRequests[index];
		if (key === '\\Printer.Canon.IJ.Info.ReadData:Value'  || 
            key === '\\Printer.Canon.IJ.Info.GetStatus:Value' || 
            key === '\\Printer.Status.Summary:State'          || 
		    key === '\\Printer.Status.Summary:StateReason' 
		       ) {
			bFlagStatus = true;
		}

		if (bFlagStatus) {
		    break;
		}
	}

	if(bFlagStatus) {
	    statusResponse = getStatusResponse(printerStream); 
	} else {
		return nRetVal;
	}
	
	for ( index = 0; index < schemaRequests.length; index++ ) {
		requestSchema = schemaRequests[index];
		if ( requestSchema === '\\Printer.Canon.IJ.Info.ReadData:Value'  ||
             requestSchema === '\\Printer.Canon.IJ.Info.GetStatus:Value' ||
		     requestSchema === '\\Printer.Status.Summary:State'          || 
		     requestSchema === '\\Printer.Status.Summary:StateReason'
		       ) {
		    setStatusSchemaResponse(requestSchema, statusResponse, printerSchemaResponses); 
		}
	}
	
	return nRetVal;
}

function setSchema( driverProperties, printerStream, printerSchemaElement ) 
{
  	var nRetVal = 0;
    var writeData = [];

	if(  printerStream === null || 
		printerSchemaElement === null ) {
		return nRetVal;
	}
	
	if( printerSchemaElement.name === '\\Printer.Canon.IJ.Info.SendRAWData:Value' ) {
		var receiveData = printerSchemaElement.value;
		var nMaxSize = 3145728;
		
		if ( receiveData.length > 0 && receiveData.length <= nMaxSize ) {
			var anTempData =[];
			var nValue = 0;
			var nCounter = 0;
			var nCodeValue = 0;
			
			for ( nCounter = 0; nCounter < receiveData.length; nCounter++ ) {
				
				nCodeValue = receiveData.charCodeAt( nCounter++ );
				
				if ( nCodeValue >= 48 && nCodeValue <= 57 ) {
					nValue = ( nCodeValue - 48 ) << 4;
				} else if ( nCodeValue >= 65 && nCodeValue <= 70 ) {
					nValue = ( nCodeValue - 55 ) << 4;
				} else if ( nCodeValue >= 97 && nCodeValue <= 102 ) {
					nValue = ( nCodeValue - 87 ) << 4;
				} else {
					nRetVal = -1;
					break;
				}
				
				nCodeValue = receiveData.charCodeAt( nCounter );
				
				if ( nCodeValue >= 48 && nCodeValue <= 57 ) {
					nValue += ( nCodeValue - 48 );
				} else if ( nCodeValue >= 65 && nCodeValue <= 70 ) {
					nValue += ( nCodeValue - 55 );
				} else if ( nCodeValue >= 97 && nCodeValue <= 102 ) {
					nValue += ( nCodeValue - 87 );
				} else {
					nRetVal = -1;
					break;
				}
				
				anTempData.push( nValue );
			}
			
			if( nCounter === receiveData.length ) {
				printerStream.write( writeData.concat( anTempData ) );
			}
		}
	} else if( printerSchemaElement.name === '\\Printer.Canon.IJ.Command:CL' ) {
		
		 writeData = [0x3c, 0x3f, 0x78, 0x6d, 0x6c, 0x20, 0x76, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x3d, 0x22, 0x31, 0x2e, 0x30, 0x22, 0x20, 0x65, 0x6e, 0x63, 0x6f, 0x64, 0x69, 0x6e, 0x67, 0x3d, 0x22, 0x75, 0x74, 0x66, 0x2d, 0x38, 0x22, 0x20, 0x3f, 0x3e, 0x3c, 0x63, 0x6d, 0x64, 0x20, 0x78, 0x6d, 0x6c, 0x6e, 0x73, 0x3a, 0x69, 0x76, 0x65, 0x63, 0x3d, 0x22, 0x68, 0x74, 0x74, 0x70, 0x3a, 0x2f, 0x2f, 0x77, 0x77, 0x77, 0x2e, 0x63, 0x61, 0x6e, 0x6f, 0x6e, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x6e, 0x73, 0x2f, 0x63, 0x6d, 0x64, 0x2f, 0x32, 0x30, 0x30, 0x38, 0x2f, 0x30, 0x37, 0x2f, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2f, 0x22, 0x3e, 0x3c, 0x69, 0x76, 0x65, 0x63, 0x3a, 0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x73, 0x3e, 0x3c, 0x69, 0x76, 0x65, 0x63, 0x3a, 0x6f, 0x70, 0x65, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x3e, 0x53, 0x74, 0x61, 0x72, 0x74, 0x4a, 0x6f, 0x62, 0x3c, 0x2f, 0x69, 0x76, 0x65, 0x63, 0x3a, 0x6f, 0x70, 0x65, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x3e, 0x3c, 0x69, 0x76, 0x65, 0x63, 0x3a, 0x70, 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		 printerStream.write(writeData);
		 
	} else if( printerSchemaElement.name === '\\Printer.Canon.IJ.Command:NC' ) {
		
		 writeData = [0x3c, 0x3f, 0x78, 0x6d, 0x6c, 0x20, 0x76, 0x65, 0x72, 0x73, 0x69, 0x6f, 0x6e, 0x3d, 0x22, 0x31, 0x2e, 0x30, 0x22, 0x20, 0x65, 0x6e, 0x63, 0x6f, 0x64, 0x69, 0x6e, 0x67, 0x3d, 0x22, 0x75, 0x74, 0x66, 0x2d, 0x38, 0x22, 0x20, 0x3f, 0x3e, 0x3c, 0x63, 0x6d, 0x64, 0x20, 0x78, 0x6d, 0x6c, 0x6e, 0x73, 0x3a, 0x69, 0x76, 0x65, 0x63, 0x3d, 0x22, 0x68, 0x74, 0x74, 0x70, 0x3a, 0x2f, 0x2f, 0x77, 0x77, 0x77, 0x2e, 0x63, 0x61, 0x6e, 0x6f, 0x6e, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x6e, 0x73, 0x2f, 0x63, 0x6d, 0x64, 0x2f, 0x32, 0x30, 0x30, 0x38, 0x2f, 0x30, 0x37, 0x2f, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2f, 0x22, 0x3e, 0x3c, 0x69, 0x76, 0x65, 0x63, 0x3a, 0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x73, 0x3e, 0x3c, 0x69, 0x76, 0x65, 0x63, 0x3a, 0x6f, 0x70, 0x65, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x3e, 0x53, 0x74, 0x61, 0x72, 0x74, 0x4a, 0x6f, 0x62, 0x3c, 0x2f, 0x69, 0x76, 0x65, 0x63, 0x3a, 0x6f, 0x70, 0x65, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x3e, 0x3c, 0x69, 0x76, 0x65, 0x63, 0x3a, 0x70, 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0x3a, 0x6a, 0x6f, 0x62, 0x49, 0x44, 0x3e, 0x3c, 0x2f, 0x69, 0x76, 0x65, 0x63, 0x3a, 0x70, 0x61, 0x72, 0x61, 0x6d, 0x5f, 0x73, 0x65, 0x74, 0x3e, 0x3c, 0x2f, 0x69, 0x76, 0x65, 0x63, 0x3a, 0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x73, 0x3e, 0x3c, 0x2f, 0x63, 0x6d, 0x64, 0x3e];
		
		 printerStream.write(writeData);
		 
	}
	
	return nRetVal;
}

function getStatus( driverProperties, printerStream, printerSchemaResponses ) 
{ 
	var nRetVal = 0;
	var statusResponse = '';

	if( printerStream === null  ||
	    printerSchemaResponses === null ) {
		return nRetVal;
	}
	
	statusResponse = getStatusResponse(printerStream); 

	setStatusSchemaResponse('\\Printer.Canon.IJ.Info.ReadData:Value', statusResponse, printerSchemaResponses);
	setStatusSchemaResponse('\\Printer.Canon.IJ.Info.GetStatus:Value', statusResponse, printerSchemaResponses);
	setStatusSchemaResponse('\\Printer.Status.Summary:State', statusResponse, printerSchemaResponses);
	setStatusSchemaResponse('\\Printer.Status.Summary:StateReason', statusResponse, printerSchemaResponses);

	return nRetVal;
}

function readStream(printerStream)
{
    var readString = '';
    var anReadBuffer = [];
    var nReadBytes = 0;
    var nReadSize = 4096;

    for ( var i = 0; i < 100; i++ ) {
        anReadBuffer = printerStream.read( nReadSize ); 
        nReadBytes = anReadBuffer.length;
        for (var j = 0; j < nReadBytes; j++ ) {
            readString += String.fromCharCode( anReadBuffer.shift() ); 
        }

        if ( isEndOfRead( readString ) ) { 
            break;
        }
    }

    return readString;
}

function getReadData( readString )
{
	var nFromIndex = 0;
	var nToIndex = 0;
	var retString = '';
	var searchTAG1 = 'cijn:ReadData';
	var searchTAG2 = '>';
	var searchTAG3 = '</';
	
	if( typeof readString !== 'string' || readString === '' ) {
		return '';
	}

	nToIndex = readString.lastIndexOf(searchTAG1);
	nToIndex = readString.lastIndexOf(searchTAG3, nToIndex);

	nFromIndex = readString.lastIndexOf(searchTAG1, nToIndex);
	nFromIndex = readString.indexOf(searchTAG2, nFromIndex);
	
	if( ( nFromIndex !== -1 && nToIndex !== -1 ) && ( nFromIndex < nToIndex ) ) {
	    retString = readString.substring(nFromIndex + searchTAG2.length, nToIndex); 
		retString = retString.replace(/\n|\r|\t|\b/g, '');
	} else {
		retString = '';
	}
	
	return retString;
}

function getStatusResponse( printerStream )
{
	var response = '';
	
	response = readStream(printerStream); 
	
	return response;
}

function setStatusSchemaResponse( requestSchema, statusResponse, printerSchemaResponses )
{
    var nRetVal = 0;
    var state = 'Idle';
    var stateReason = 'None';
    var statusVal = '';
    var stsDOC = '';
    var stsDSC = '';
    var stsDJS = '';
    var stsDBS = '';
    var stsDWS = '';
	
    if ( typeof requestSchema      !== 'string' || requestSchema      === '' ||
         typeof statusResponse !== 'string' || statusResponse === ''
        ) {
		return nRetVal;
   	}

   	if (requestSchema === '\\Printer.Canon.IJ.Info.GetStatus:Value') {

   	    printerSchemaResponses.addString('\\Printer.Canon.IJ.Info.GetStatus:Value', statusResponse);

   	} else if ( requestSchema === '\\Printer.Canon.IJ.Info.ReadData:Value' ) {

   	    statusVal = getReadData(statusResponse); 

   	    printerSchemaResponses.addString('\\Printer.Canon.IJ.Info.ReadData:Value', statusVal); 
			
	} else if ( requestSchema === '\\Printer.Status.Summary:State' ) {
	
		statusVal = getReadData(statusResponse);

		stsDOC = getStateVal(statusVal, 'DOC'); 
		stsDSC = getStateVal(statusVal, 'DSC'); 
		stsDJS = getStateVal(statusVal, 'DJS'); 
		stsDBS = getStateVal(statusVal, 'DBS'); 
		stsDWS = getStateVal(statusVal, 'DWS'); 
		
		state = getState(  stsDOC, stsDSC, stsDJS, stsDBS, stsDWS ); 
		
		printerSchemaResponses.addString('\\Printer.Status.Summary:State', state); 
		
	} else if ( requestSchema === '\\Printer.Status.Summary:StateReason' ) {
		
	    statusVal = getReadData(statusResponse);

	    stsDWS = getStateVal(statusVal, 'DWS'); 
	    stsDOC = getStateVal(statusVal, 'DOC'); 
	    stsDSC = getStateVal(statusVal, 'DSC'); 

	    stateReason = getStateReason(stsDWS, stsDOC, stsDSC); 
		
		printerSchemaResponses.addString('\\Printer.Status.Summary:StateReason', stateReason); 
	}
	
	return nRetVal;
}

function getStateVal( statusVal, key ) 
{
	var retString = '';
	var tempString = '';
	var sub = '';
	var pos1 = 0;
	var pos2 = 0;

	if( typeof key !== 'string' || key === '' ||
	    typeof statusVal !== 'string' || statusVal === '' ) {
		return '';
	}
	
	if( key === 'DWS' ) { 
		pos1 = statusVal.indexOf( key + ':' );
		if( pos1 !== -1 ) {
			sub = statusVal.substring(pos1 + key.length + 1, statusVal.length);
			pos2 = sub.indexOf(';');
			tempString = sub.substring(0, pos2);
			
			if( tempString.indexOf( '1900' ) !== -1) {
				retString = '1900';
			} else {
				retString = 'NO';
			}
		}  else {
			retString = '';
		}
	} else if (key === 'DOC') { 
		pos1 = statusVal.indexOf( key + ':' );
		if( pos1 !== -1 ) {
			sub = statusVal.substring(pos1 + key.length + 1, statusVal.length);
			pos2 = sub.indexOf(';');
			sub = sub.substring(0, pos2);
			pos2 = sub.indexOf(',/,');

			if (pos2 !== -1) {
			    sub = sub.substring(0, pos2);
			}

			pos2 = sub.indexOf(',');
			sub = sub.substring(pos2 + 1, sub.length);
			pos2 = sub.indexOf(',');

			retString = sub.substring(pos2 + 1, sub.length);
		}  else {
			retString = '';
		}
	} else if (key === 'DJS' || key === 'DBS' || key === 'DSC') {
		pos1 = statusVal.indexOf( key + ':' );
		if( pos1 !== -1 ) {
			sub = statusVal.substring(pos1 + key.length + 1, statusVal.length);
			pos2 = sub.indexOf(';');
			retString = sub.substring(0, pos2);
			
			
		} else {
			retString = '';
		}
	} else {
		retString = '';
	}
	
	return retString;
}

function getState(  stsDOC, stsDSC, stsDJS, stsDBS, stsDWS )
{
	var retState = '';
	
	if( typeof stsDOC !== 'string' || stsDOC === '' ||
	    typeof stsDSC !== 'string' || stsDSC === '' ||
	    typeof stsDJS !== 'string' || stsDJS === '' ||
	    typeof stsDBS !== 'string' || stsDBS === '' || 
	    typeof stsDWS !== 'string' || stsDWS === '' ) {
		return '';
	}

	if (stsDOC !== 'NO' || stsDSC !== 'NO' || stsDWS !== 'NO') { 
		retState = 'Stopped'; 
	} else if( (stsDOC === 'NO' && stsDSC === 'NO') && 
	           (stsDJS !==  'NO' || stsDBS !== 'NO') ) { 
		retState = 'Processing';
	} else {
		retState = 'Idle'; 
	}
	
	return retState;
}

function getStateReason( stsDWS, stsDOC, stsDSC )
{
	var stateReason = '';

	if( typeof stsDWS !== 'string' || stsDWS === '' ||
	    typeof stsDOC !== 'string' || stsDOC === '' ||
        typeof stsDSC !== 'string' || stsDSC === ''
        ) {
		return '';
	}
    
	if (stsDSC !== 'NO' || stsDOC !== 'NO') { 
	    stateReason = 'AttentionRequired';
	} else if (stsDSC === 'NO' && stsDOC === 'NO' && stsDWS === '1900') { 
	    stateReason = 'Paused';
	} else if (stsDSC === 'NO' && stsDOC === 'NO' && stsDWS === 'NO') { 
	    stateReason = 'None';
	} else { 
	    stateReason = '';
	}

	return stateReason;
}

function isEndOfRead( readString )
{
	var tempString = '';
	var nLength = 0;

	if( typeof readString !== 'string' || readString === '' ) {
		return false;
	}
	
	tempString = readString;
	tempString = tempString.replace(/\n|\r|\t|\b/g, '');
	nLength = tempString.length;

	if( tempString.charAt( nLength - 6 ) === '<' &&
	    tempString.charAt( nLength - 5 ) === '/' &&
	  ( tempString.charAt( nLength - 4 ) === 'c' || tempString.charAt( nLength - 4 ) === 'C' ) &&
	  ( tempString.charAt( nLength - 3 ) === 'm' || tempString.charAt( nLength - 3 ) === 'M' ) &&
	  ( tempString.charAt( nLength - 2 ) === 'd' || tempString.charAt( nLength - 2 ) === 'D' ) &&
	    tempString.charAt( nLength - 1 ) === '>' ) {
		return true; 
	} else {
		return false;
	}
}