Package org.openpdf.text.pdf.parser

Class PdfContentTextLocator

java.lang.Object

org.openpdf.text.pdf.parser.PdfContentStreamHandler

org.openpdf.text.pdf.parser.PdfContentTextLocator

public class PdfContentTextLocator
extends PdfContentStreamHandler

Nested Class Summary

Nested classes/interfaces inherited from class org.openpdf.text.pdf.parser.PdfContentStreamHandler

PdfContentStreamHandler.BeginText, PdfContentStreamHandler.Do, PdfContentStreamHandler.EndText, PdfContentStreamHandler.ModifyCurrentTransformationMatrix, PdfContentStreamHandler.MoveNextLineAndShowText, PdfContentStreamHandler.MoveNextLineAndShowTextWithSpacing, PdfContentStreamHandler.PopGraphicsState, PdfContentStreamHandler.ProcessGraphicsStateResource, PdfContentStreamHandler.PushGraphicsState, PdfContentStreamHandler.SetTextCharacterSpacing, PdfContentStreamHandler.SetTextFont, PdfContentStreamHandler.SetTextHorizontalScaling, PdfContentStreamHandler.SetTextLeading, PdfContentStreamHandler.SetTextRenderMode, PdfContentStreamHandler.SetTextRise, PdfContentStreamHandler.SetTextWordSpacing, PdfContentStreamHandler.ShowText, PdfContentStreamHandler.ShowTextArray, PdfContentStreamHandler.TextMoveNextLine, PdfContentStreamHandler.TextMoveStartNextLine, PdfContentStreamHandler.TextMoveStartNextLineWithLeading, PdfContentStreamHandler.TextSetTextMatrix

Field Summary

Fields

Modifier and Type	Field	Description
private final ArrayList<MatchedPattern>	accumulator
private float[]	coordinates
private final ArrayList<ParsedText>	fragments
private final ArrayList<Float>	fragmentsWidths
private final int	mode
private Pattern	p
private final int	page

Fields inherited from class org.openpdf.text.pdf.parser.PdfContentStreamHandler

contextNames, gsStack, operators, renderListener, textFragments, textFragmentStreams, textLineMatrix, textMatrix

Constructor Summary

Constructors

Constructor	Description
PdfContentTextLocator(TextAssembler renderListener, float[] coordinates, int page)	Construct a content PdfContetStreamHandler for coordinates-based text extraction pattern
PdfContentTextLocator(TextAssembler renderListener, String pattern, int page)	Construct a content PdfContetStreamHandler for regex-based text extraction pattern

Method Summary

Modifier and Type	Method	Description
private float	convertHeightToUser(float height)
(package private) void	displayPdfString(PdfString string)	Extract a PdfString content and coordinates based on the handler extraction pattern: either matches a given regex or intersects a given bounding box
List<MatchedPattern>	getMatchedPatterns()
String	getResultantText()
protected void	installDefaultOperators()	Loads all the supported graphics and text state operators in a map.
private void	locatePdfString(String decoded, float startWidth, float totalWidth, float fontFloor, float fontCeiling)	Extract text if it's coordinates intersect with the given bounding box
private void	matchPdfString(String decoded, float[] widths, float totalWidth, float fontFloor, float fontCeiling)	Search for a pattern in a PdfString and if found, collect its bounding box
(package private) void	popContext()
(package private) void	pushContext(String newContextName)
void	reset()

Methods inherited from class org.openpdf.text.pdf.parser.PdfContentStreamHandler

applyTextAdjust, getContentBytesFromPdfObject, getContentBytesFromPdfObjectStatic, getCurrentFont, getCurrentTextLineMatrix, getCurrentTextMatrix, graphicsState, invokeOperator, lookupOperator, processContent, registerContentOperator

Methods inherited from class java.lang.Object

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

Field Details

accumulator

private final ArrayList<MatchedPattern> accumulator

fragments

private final ArrayList<ParsedText> fragments

fragmentsWidths

private final ArrayList<Float> fragmentsWidths

page

private final int page

p

private Pattern p

coordinates

private float[] coordinates

mode

private final int mode

Constructor Details

PdfContentTextLocator

public PdfContentTextLocator(TextAssembler renderListener,
 String pattern,
 int page)

Construct a content PdfContetStreamHandler for regex-based text extraction pattern

Parameters:

renderListener - the text assembler

pattern - the pattern to match text against

page - PdfPage to inspect

PdfContentTextLocator

public PdfContentTextLocator(TextAssembler renderListener,
 float[] coordinates,
 int page)

Construct a content PdfContetStreamHandler for coordinates-based text extraction pattern

Parameters:

renderListener - the text assembler

coordinates - the bounding box to search text within

page - PdfPage to inspect

Method Details

installDefaultOperators

protected void installDefaultOperators()

Loads all the supported graphics and text state operators in a map.

Overrides:

installDefaultOperators in class PdfContentStreamHandler

popContext

void popContext()

Specified by:

popContext in class PdfContentStreamHandler

pushContext

void pushContext(String newContextName)

Specified by:

pushContext in class PdfContentStreamHandler

reset

public void reset()

Specified by:

reset in class PdfContentStreamHandler

displayPdfString

void displayPdfString(PdfString string)

Extract a PdfString content and coordinates based on the handler extraction pattern: either matches a given regex or intersects a given bounding box

Specified by:

displayPdfString in class PdfContentStreamHandler

Parameters:

string - the text to inspect

matchPdfString

private void matchPdfString(String decoded,
 float[] widths,
 float totalWidth,
 float fontFloor,
 float fontCeiling)

Search for a pattern in a PdfString and if found, collect its bounding box

Parameters:

decoded - the text to inspect

widths - array of prefix widths of each char

totalWidth - width of the text

fontFloor - lowest y-coordinate of the font

fontCeiling - highest y-coordinate of the font

locatePdfString

private void locatePdfString(String decoded,
 float startWidth,
 float totalWidth,
 float fontFloor,
 float fontCeiling)

Extract text if it's coordinates intersect with the given bounding box

Parameters:

decoded - the text to inspect

startWidth - left-most x-coordinate of the text

totalWidth - width of the text

fontFloor - lowest y-coordinate of the font

fontCeiling - highest y-coordinate of the font

convertHeightToUser

private float convertHeightToUser(float height)

getResultantText

public String getResultantText()

Specified by:

getResultantText in class PdfContentStreamHandler

Returns:

result text

getMatchedPatterns

public List<MatchedPattern> getMatchedPatterns()

Returns:

list of text strips that matches