de.micromata.genome.gwiki.page.impl.wiki.MacroAttributesUtils.java Source code

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Here is the source code for de.micromata.genome.gwiki.page.impl.wiki.MacroAttributesUtils.java

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//
// Copyright (C) 2010-2016 Roger Rene Kommer & 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.gwiki.page.impl.wiki;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.commons.lang3.StringUtils;

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

public class MacroAttributesUtils {
    private static enum State {
        ParseKey, ParseValue,
    };

    protected static String trim(String text) {
        if (text.length() < 3) {
            return text;
        }
        String ttext = StringUtils.trim(text);
        if (ttext.length() > 0 && ttext.endsWith("\\")) {
            return text;
        }

        return ttext;
    }

    public static Map<String, String> decode(String text) {
        Map<String, String> map = new HashMap<String, String>();
        if (StringUtils.isEmpty(text) == true)
            return map;

        text = trim(text);

        List<String> tlist = Converter.parseStringTokens(text, "|\\=", true);
        if (tlist.size() == 0)
            return map;
        if (tlist.size() == 1) {
            map.put(MacroAttributes.DEFAULT_VALUE_KEY, tlist.get(0));
            return map;
        }
        StringBuilder sb = new StringBuilder();
        String curKey = null;
        String curValue = null;
        State state = State.ParseKey;
        for (int i = 0; i < tlist.size(); ++i) {
            String t = tlist.get(i);
            if ("\\".equals(t) == true) {
                ++i;
                t = tlist.get(i);
                sb.append(t);
                continue;
            } else if ("=".equals(t) == true) {
                if (state == State.ParseValue) {
                    sb.append(t);
                    continue;
                }
                curKey = sb.toString();
                sb = new StringBuilder();
                state = State.ParseValue;
            } else if ("|".equals(t) == true) {
                // if (state != State.ParseValue) {
                // //eigentlich fehler
                // throw new IllegalStateException("Parsing '|' in state: " + state);
                // }
                curValue = sb.toString();
                map.put(curKey, curValue);
                sb = new StringBuilder();
                curKey = null;
                curValue = null;
                state = State.ParseKey;
            } else {
                sb.append(t);
            }
        }
        if (curKey != null) {
            curValue = sb.toString();
            map.put(curKey, StringUtils.defaultString(curValue));
        }
        return map;
    }
}