com.openpcl.pclrenderimage.tools
Class PclParser

java.lang.Object
  com.openpcl.pclrenderimage.tools.PclParser

public class PclParser
extends Object

Parse PCL

Author:

James R. Adrig Brought over from rmstools.jar. 05/08/2001 Use callbacks to fire events in caller via an Interface Description: Parse a PCL file and make callbacks when commands are found. This is more efficient than requiring the caller to 'loop'. This was converted from the very messy and incomplete Delphi code referenced below. It probably should have just been done from scratch; but it works... Delphi PCLGet @ http://techref.massmind.org/techref/language/pcl/parse.htm ============================================================================ State Description ----- ------------------------------------ 1 Not in a PCL Commamd 2 Seen an Escape: we're in a PCL Command 3 Loaded a 2 char command 4 Loaded last term of commnd 5 Loaded last term with binary data 6 Loaded a term, another term waiting 7 Loaded a term with binary data, another term waiting State Prefix Group Value Term Command Left in Buffer ----- ------ ------ ----- ---- ------------ -------------- 3 X X 4 x # X x#X 4 x X xX 4 x y # Z xy#Z 6 x y # z xy#z#Z #Z ============================================================================

Field Summary

static char

scESC

Constructor Summary

PclParser(byte[] inBytes, PclCommandEvent callbackObject)

PclParser(String pclFileName, PclCommandEvent callbackObject)
Construct a Parser with the filename and an object that implements 'PclCommandEvent'

Method Summary

void	close()
byte[]	GetBytesFromBuffer(int numChars)
String	GetCharFromBuffer()
String	GetNumFromBuffer()
int	getOneCommand() Returns the 'pclState': we may be waiting for more commands...
void	getPclCommands()
boolean	isUpperCase(String s) Returns true if the string consists of uppercase characters.
void	ParsePCL()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

scESC

public static char scESC

Constructor Detail

PclParser

public PclParser(String pclFileName,
                 PclCommandEvent callbackObject)
          throws FileNotFoundException

Construct a Parser with the filename and an object that implements 'PclCommandEvent'

Throws:

FileNotFoundException

PclParser

public PclParser(byte[] inBytes,
                 PclCommandEvent callbackObject)

Method Detail

close

public void close()
           throws IOException

Throws:

IOException

ParsePCL

public void ParsePCL()

getPclCommands

public void getPclCommands()
                    throws ParseException,
                           IOException

Throws:

ParseException

IOException

getOneCommand

public int getOneCommand()
                  throws ParseException,
                         IOException

Returns the 'pclState': we may be waiting for more commands... There should be a term coming up (Esc or term waiting)

Throws:

ParseException

IOException

GetCharFromBuffer

public String GetCharFromBuffer()
                         throws IOException

Throws:

IOException

GetBytesFromBuffer

public byte[] GetBytesFromBuffer(int numChars)
                          throws IOException

Throws:

IOException

GetNumFromBuffer

public String GetNumFromBuffer()
                        throws ParseException,
                               IOException

Throws:

ParseException

IOException

isUpperCase

public boolean isUpperCase(String s)

Returns true if the string consists of uppercase characters.

Parameters:

s - the input string

Returns:

true if the string consists only of uppercase characters.

See Also:

Character.isUpperCase(char).