Java Swing RTF RTF2TXT(String Str)

Description

RTFTXT

License

Apache License

Declaration

public static final String RTF2TXT(String Str) throws IOException, BadLocationException 

Method Source Code

//package com.java2s;
/* ===========================================================================
 * Copyright (C) 2015 CapsicoHealth Inc.
 *
 * Licensed 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.//from  w w w  .j  a  v  a 2 s.c om
 */

import java.io.IOException;

import java.io.StringReader;

import java.util.regex.Pattern;
import javax.swing.text.BadLocationException;
import javax.swing.text.Document;
import javax.swing.text.rtf.RTFEditorKit;

public class Main {
    protected static final Pattern RTF_CELL_PATTERN = Pattern.compile("\\\\cell\\W|\\}\\{\\\\");

    public static final String RTF2TXT(String Str) throws IOException, BadLocationException {
        if (Str != null && Str.startsWith("{\\rtf1") == true) {
            // There is a "questionable" bug in the RTF-to-Text routine in the Java library. With tables, text in
            // adjacent cells are concatenated without any
            // spacing. So, for example, a table with a cell containing "abc" followed by another call containing "123",
            // after conversion, you'll get "abc123".
            // With this hack, we capture the RTF cell delimiter "\cell$" and replace it with ". \cell$". This will
            // separate text in cells from other text and will
            // allow text processing to give better results.
            Str = RTF_CELL_PATTERN.matcher(Str).replaceAll(". $0");
            RTFEditorKit RTF = new RTFEditorKit();
            Document doc = RTF.createDefaultDocument();
            RTF.read(new StringReader(Str), doc, 0);
            Str = doc.getText(0, doc.getLength());
        }
        return Str;
    }
}

Related

1. rtfToPlain(String rtf)