de.citec.scie.pdf

Class PDFStructuredTextExtractor

java.lang.Object

de.citec.scie.pdf.PDFStructuredTextExtractor

public class PDFStructuredTextExtractor
extends Object

This class takes a PDF File as input and extracts the text of it in an HTML-like hierarchical object structure (see the package "structure" for the classes itself).

Author:

Benjamin Paassen - bpaassen@techfak.uni-bielefeld.de

Field Summary

Fields

Modifier and Type	Field and Description
static int	MINIMUMPARSIZE

Constructor Summary

Constructors

Constructor and Description
PDFStructuredTextExtractor()

Method Summary

Modifier and Type	Method and Description
static Document	importAsDocument(InputStream input) Assumes the given InputStream to contain PDF data and parses it.
static InputStream	importAsInputStream(InputStream input) Assumes the given InputStream to contain PDF data and parses it.
static String	importAsString(InputStream input) Assumes the given InputStream to contain PDF data and parses it.

Methods inherited from class java.lang.Object

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

Field Detail

MINIMUMPARSIZE

public static final int MINIMUMPARSIZE

See Also:

Constant Field Values

Constructor Detail

PDFStructuredTextExtractor

public PDFStructuredTextExtractor()

Method Detail

importAsDocument

public static Document importAsDocument(InputStream input)
                                 throws IOException

Assumes the given InputStream to contain PDF data and parses it. The parsed data is transformed to a Document object.

Parameters:

input - an input stream containing PDF data.

Returns:

a Document object containing the text and structure of the given PDF.

Throws:

IOException - is thrown if anything goes wrong during either stream reading or parsing.

importAsString

public static String importAsString(InputStream input)
                             throws IOException

Assumes the given InputStream to contain PDF data and parses it. The parsed data is returned as plain text.

Parameters:

input - an input stream containing PDF data.

Returns:

a plain text String containing the text inside the PDF.

Throws:

IOException - is thrown if anything goes wrong during either stream reading or parsing.

importAsInputStream

public static InputStream importAsInputStream(InputStream input)
                                       throws IOException

Assumes the given InputStream to contain PDF data and parses it. The parsed data is returned as an InputStream containing the plain text data of the PDF input stream.

Parameters:

input - an input stream containing PDF data.

Returns:

an InputStream (ByteArrayInputStream with UTF-8 encoding) containing the plain text data of the PDF input stream.

Throws:

IOException - is thrown if anything goes wrong during either stream reading or parsing.