com.sun.pdfview
Class PDFParser

java.lang.Object
  com.sun.pdfview.BaseWatchable
      com.sun.pdfview.PDFParser

All Implemented Interfaces:

Watchable, java.lang.Runnable

public class PDFParser
extends BaseWatchable

PDFParser is the class that parses a PDF content stream and produces PDFCmds for a PDFPage. You should never ever see it run: it gets created by a PDFPage only if needed, and may even run in its own thread.

Field Summary

static int

debuglevel

Fields inherited from interface com.sun.pdfview.Watchable

COMPLETED, ERROR, NEEDS_DATA, NOT_STARTED, PAUSED, RUNNING, STOPPED, UNKNOWN

Constructor Summary

PDFParser(PDFPage cmds, byte[] stream, java.util.HashMap<java.lang.String,PDFObject> resources)
Don't call this constructor directly.

Method Summary

void	cleanup() Cleanup when iteration is done
static void	debug(java.lang.String msg, int level)
java.lang.String	dumpStream()
void	dumpStreamToError()
static java.lang.String	escape(java.lang.String msg)
int	iterate() parse the stream.
static void	setDebugLevel(int level)
void	setup() Called to prepare for some iterations

Methods inherited from class com.sun.pdfview.BaseWatchable

execute, getStatus, go, go, go, go, isExecutable, isFinished, isSuppressSetErrorStackTrace, run, setError, setStatus, setSuppressSetErrorStackTrace, stop, waitForFinish

Methods inherited from class java.lang.Object

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

Field Detail

debuglevel

public static int debuglevel

Constructor Detail

PDFParser

public PDFParser(PDFPage cmds,
                 byte[] stream,
                 java.util.HashMap<java.lang.String,PDFObject> resources)

Don't call this constructor directly. Instead, use PDFFile.getPage(int pagenum) to get a PDFPage. There should never be any reason for a user to create, access, or hold on to a PDFParser.

Method Detail

debug

public static void debug(java.lang.String msg,
                         int level)

escape

public static java.lang.String escape(java.lang.String msg)

setDebugLevel

public static void setDebugLevel(int level)

setup

public void setup()

Called to prepare for some iterations

Overrides:

setup in class BaseWatchable

iterate

public int iterate()
            throws java.lang.Exception

parse the stream. commands are added to the PDFPage initialized in the constructor as they are encountered.

Page numbers in comments refer to the Adobe PDF specification.
commands are listed in PDF spec 32000-1:2008 in Table A.1

Specified by:

iterate in class BaseWatchable

Returns:

• Watchable.RUNNING when there are commands to be processed
• Watchable.COMPLETED when the page is done and all the commands have been processed
• Watchable.STOPPED if the page we are rendering into is no longer available

Throws:

java.lang.Exception

cleanup

public void cleanup()

Cleanup when iteration is done

Overrides:

cleanup in class BaseWatchable

dumpStreamToError

public void dumpStreamToError()

dumpStream

public java.lang.String dumpStream()