org.fit.pdfdom.PDFToHTML Maven / Gradle / Ivy
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Pdf2Dom is a PDF parser that converts the documents to a HTML DOM representation. The obtained DOM tree may be then serialized to a HTML file or further processed. The inline CSS definitions contained in the resulting document are used for making the HTML page as similar as possible to the PDF input. A command-line utility for converting the PDF documents to HTML is included in the distribution package. Pdf2Dom may be also used as an independent Java library with a standard DOM interface for your DOM-based applications or as an alternative parser for the CSSBox rendering engine in order to add the PDF processing capability to CSSBox.
/**
* PDFToHTML.java
* (c) Radek Burget, 2011
*
* Pdf2Dom is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pdf2Dom is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with CSSBox. If not, see [] []");
System.out.println("Options: ");
System.out.println("-fm=[mode] Font handler mode. [mode] = EMBED_BASE64, SAVE_TO_DIR, IGNORE");
System.out.println("-fdir=[path] Directory to extract fonts to. [path] = font extract directory ie dir/my-font-dir");
System.out.println();
System.out.println("-im=[mode] Image handler mode. [mode] = EMBED_BASE64, SAVE_TO_DIR, IGNORE");
System.out.println("-idir=[path] Directory to extract images to. [path] = image extract directory ie dir/my-image-dir");
System.exit(1);
}
String infile = args[0];
String outfile;
if (args.length > 1 && !args[1].startsWith("-"))
outfile = args[1];
else
{
String base = args[0];
if (base.toLowerCase().endsWith(".pdf"))
base = base.substring(0, base.length() - 4);
outfile = base + ".html";
}
PDFDomTreeConfig config = parseOptions(args);
PDDocument document = null;
try
{
document = PDDocument.load(new File(infile));
PDFDomTree parser = new PDFDomTree(config);
//parser.setDisableImageData(true);
Writer output = new PrintWriter(outfile, "utf-8");
parser.writeText(document, output);
output.close();
}
catch (Exception e)
{
System.err.println("Error: " + e.getMessage());
e.printStackTrace();
}
finally
{
if( document != null )
{
try
{
document.close();
} catch (IOException e) {
System.err.println("Error: " + e.getMessage());
//e.printStackTrace();
}
}
}
}
private static PDFDomTreeConfig parseOptions(String[] args)
{
PDFDomTreeConfig config = PDFDomTreeConfig.createDefaultConfig();
List flags = parseFlags(args);
for (CommandLineFlag flagOn : flags)
{
if (flagOn.flagName.equals("fm"))
{
HtmlResourceHandler handler = createResourceHandlerFor(flagOn.value);
config.setFontHandler(handler);
} else if (flagOn.flagName.equals("fdir"))
config.setFontHandler(new SaveResourceToDirHandler(new File(flagOn.value)));
else if (flagOn.flagName.equals("im"))
{
HtmlResourceHandler handler = createResourceHandlerFor(flagOn.value);
config.setImageHandler(handler);
} else if (flagOn.flagName.equals("idir"))
config.setImageHandler(new SaveResourceToDirHandler(new File(flagOn.value)));
}
return config;
}
private static HtmlResourceHandler createResourceHandlerFor(String value)
{
HtmlResourceHandler handler = PDFDomTreeConfig.embedAsBase64();
if (value.equalsIgnoreCase("EMBED_BASE64"))
handler = PDFDomTreeConfig.embedAsBase64();
else if (value.equalsIgnoreCase("SAVE_TO_DIR"))
handler = new SaveResourceToDirHandler();
else if (value.equalsIgnoreCase("IGNORE"))
handler = new IgnoreResourceHandler();
return handler;
}
private static List parseFlags(String[] args)
{
List flags = new ArrayList();
for (String argOn : args)
{
if (argOn.startsWith("-"))
flags.add(CommandLineFlag.parse(argOn));
}
return flags;
}
private static class CommandLineFlag
{
public String flagName;
public String value = "";
public static CommandLineFlag parse(String argOn)
{
CommandLineFlag flag = new CommandLineFlag();
String[] flagSplit = argOn.split("=");
flag.flagName = flagSplit[0].replace("-", "");
if (flagSplit.length > 1)
flag.value = flagSplit[1].replace("=", "");
return flag;
}
}
}