/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.pdfbox;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.Reader;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.edit.PDPageContentStream;
import org.apache.pdfbox.pdmodel.font.PDSimpleFont;
import org.apache.pdfbox.pdmodel.font.PDTrueTypeFont;
import org.apache.pdfbox.pdmodel.font.PDType1Font;
/**
* This will take a text file and ouput a pdf with that text.
*
* @author <a href="ben@benlitchfield.com">Ben Litchfield</a>
* @version $Revision: 1.4 $
*/
public class TextToPDF
{
private int fontSize = 10;
private PDSimpleFont font = PDType1Font.HELVETICA;
/**
* Create a PDF document with some text.
*
* @param text The stream of text data.
*
* @return The document with the text in it.
*
* @throws IOException If there is an error writing the data.
*/
public PDDocument createPDFFromText( Reader text ) throws IOException
{
PDDocument doc = null;
try
{
final int margin = 40;
float height = font.getFontDescriptor().getFontBoundingBox().getHeight()/1000;
//calculate font height and increase by 5 percent.
height = height*fontSize*1.05f;
doc = new PDDocument();
BufferedReader data = new BufferedReader( text );
String nextLine = null;
PDPage page = new PDPage();
PDPageContentStream contentStream = null;
float y = -1;
float maxStringLength = page.getMediaBox().getWidth() - 2*margin;
// There is a special case of creating a PDF document from an empty string.
boolean textIsEmpty = true;
while( (nextLine = data.readLine()) != null )
{
// The input text is nonEmpty. New pages will be created and added
// to the PDF document as they are needed, depending on the length of
// the text.
textIsEmpty = false;
String[] lineWords = nextLine.trim().split( " " );
int lineIndex = 0;
while( lineIndex < lineWords.length )
{
StringBuffer nextLineToDraw = new StringBuffer();
float lengthIfUsingNextWord = 0;
do
{
nextLineToDraw.append( lineWords[lineIndex] );
nextLineToDraw.append( " " );
lineIndex++;
if( lineIndex < lineWords.length )
{
String lineWithNextWord = nextLineToDraw.toString() + lineWords[lineIndex];
lengthIfUsingNextWord =
(font.getStringWidth( lineWithNextWord )/1000) * fontSize;
}
}
while( lineIndex < lineWords.length &&
lengthIfUsingNextWord < maxStringLength );
if( y < margin )
{
// We have crossed the end-of-page boundary and need to extend the
// document by another page.
page = new PDPage();
doc.addPage( page );
if( contentStream != null )
{
contentStream.endText();
contentStream.close();
}
contentStream = new PDPageContentStream(doc, page);
contentStream.setFont( font, fontSize );
contentStream.beginText();
y = page.getMediaBox().getHeight() - margin + height;
contentStream.moveTextPositionByAmount(
margin, y );
}
//System.out.println( "Drawing string at " + x + "," + y );
if( contentStream == null )
{
throw new IOException( "Error:Expected non-null content stream." );
}
contentStream.moveTextPositionByAmount( 0, -height);
y -= height;
contentStream.drawString( nextLineToDraw.toString() );
}
}
// If the input text was the empty string, then the above while loop will have short-circuited
// and we will not have added any PDPages to the document.
// So in order to make the resultant PDF document readable by Adobe Reader etc, we'll add an empty page.
if (textIsEmpty)
{
doc.addPage(page);
}
if( contentStream != null )
{
contentStream.endText();
contentStream.close();
}
}
catch( IOException io )
{
if( doc != null )
{
doc.close();
}
throw io;
}
return doc;
}
/**
* This will create a PDF document with some text in it.
* <br />
* see usage() for commandline
*
* @param args Command line arguments.
*
* @throws IOException If there is an error with the PDF.
*/
public static void main(String[] args) throws IOException
{
TextToPDF app = new TextToPDF();
PDDocument doc = null;
try
{
if( args.length < 2 )
{
app.usage();
}
else
{
for( int i=0; i<args.length-2; i++ )
{
if( args[i].equals( "-standardFont" ))
{
i++;
app.setFont( PDType1Font.getStandardFont( args[i] ));
}
else if( args[i].equals( "-ttf" ))
{
i++;
PDTrueTypeFont font = PDTrueTypeFont.loadTTF( doc, new File( args[i]));
app.setFont( font );
}
else if( args[i].equals( "-fontSize" ))
{
i++;
app.setFontSize( Integer.parseInt( args[i] ) );
}
else
{
throw new IOException( "Unknown argument:" + args[i] );
}
}
doc = app.createPDFFromText( new FileReader( args[args.length-1] ) );
doc.save( args[args.length-2] );
}
}
catch (Exception e)
{
e.printStackTrace();
}
finally
{
if( doc != null )
{
doc.close();
}
}
}
/**
* This will print out a message telling how to use this example.
*/
private void usage()
{
String[] std14 = PDType1Font.getStandard14Names();
System.err.println( "usage: jar -jar pdfbox-app-x.y.z.jar TextToPDF [options] <output-file> <text-file>" );
System.err.println( " -standardFont <name> default:" + PDType1Font.HELVETICA.getBaseFont() );
for( int i=0; i<std14.length; i++ )
{
System.err.println( " " + std14[i] );
}
System.err.println( " -ttf <ttf file> The TTF font to use.");
System.err.println( " -fontSize <fontSize> default:10" );
}
/**
* @return Returns the font.
*/
public PDSimpleFont getFont()
{
return font;
}
/**
* @param aFont The font to set.
*/
public void setFont(PDSimpleFont aFont)
{
this.font = aFont;
}
/**
* @return Returns the fontSize.
*/
public int getFontSize()
{
return fontSize;
}
/**
* @param aFontSize The fontSize to set.
*/
public void setFontSize(int aFontSize)
{
this.fontSize = aFontSize;
}
}