de.micromata.genome.util.text.StandardHeaderSplitter.java Source code

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Here is the source code for de.micromata.genome.util.text.StandardHeaderSplitter.java

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//
// Copyright (C) 2010-2016 Micromata GmbH
//
// 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.
//

package de.micromata.genome.util.text;

import java.io.IOException;
import java.io.LineNumberReader;
import java.io.Reader;
import java.io.StringReader;
import java.util.HashMap;
import java.util.Map;

import org.apache.commons.lang3.StringUtils;

import de.micromata.genome.util.types.Pair;

/**
 * Internet text protocoll header splitter.
 *
 * @author Roger Rene Kommer (r.kommer.extern@micromata.de)
 */
public class StandardHeaderSplitter {

    /**
     * Split.
     *
     * @param text the text
     * @return the pair
     * @throws IOException Signals that an I/O exception has occurred.
     */
    public static Pair<String, Map<String, String>> split(String text) throws IOException {
        LineNumberReader lnr = new LineNumberReader(new StringReader(text));
        Map<String, String> headers = new HashMap<String, String>();
        String line = null;
        boolean leedingNewlines = true;
        while ((line = lnr.readLine()) != null) {
            if (StringUtils.isBlank(line)) {
                if (leedingNewlines == true) {// es kann sein, dass am Anfang die Newlines sind(wegen Code, etc)
                    continue;
                } else {
                    break;
                }
            }
            String key = StringUtils.substringBefore(line, ":");
            String value = StringUtils.substringAfter(line, ":");
            headers.put(StringUtils.trim(key), StringUtils.trim(value));
            leedingNewlines = false;
        }
        if (headers.size() == 0) {
            return new Pair<String, Map<String, String>>(text, headers);
        }
        return new Pair<String, Map<String, String>>(slurp(lnr), headers);
    }

    /**
     * Slurp.
     *
     * @param in the in
     * @return the string
     * @throws IOException Signals that an I/O exception has occurred.
     */
    public static String slurp(Reader in) throws IOException {
        StringBuilder sb = new StringBuilder();
        char[] b = new char[4096];
        for (int n; (n = in.read(b)) != -1;) {
            sb.append(new String(b, 0, n));
        }
        return sb.toString();
    }
}