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Cattle framework utils component pom

There is a newer version: 1.0.1-M3

/*
 * Copyright (C) 2018 the original author or authors.
 *
 * 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 org.cattleframework.utils.auxiliary;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.cattleframework.exception.CattleException;

/**
 * 文本模板
 * 
 * @author orange
 *
 */
public class StringTemplate {

    /** Java 风格的模板变量引用字符串: ${...} */
    public static final String REGEX_PATTERN_JAVA_STYLE = "\\$\\{([^\\}]*)\\}";

    /** Unix shell 风格的模板变量引用字符串: $... */
    public static final String REGEX_PATTERN_UNIX_SHELL_STYLE = "\\$([a-zA-Z_]+)";

    private Map varExpMap = new HashMap();

    private Map varValueMap = new HashMap();

    private String templateString;

    public StringTemplate(String templateString, String templateRegex) {
	Pattern p = Pattern.compile(templateRegex);
	Matcher m = p.matcher(templateString);
	while (m.find()) {
	    if (m.groupCount() != 1) {
		throw new CattleException("模式'" + templateRegex + "'是无效的,它必须包含且只包含一个正则表达式");
	    }
	    varExpMap.put(m.group(1), m.group(0));
	}
	this.templateString = templateString;
    }

    public String[] getVariables() {
	return varExpMap.keySet().toArray(new String[0]);
    }

    public void setVariable(String varName, String varValue) {
	varValueMap.put(varName, varValue);
    }

    public String getParseResult() {
	Iterator> itr = varExpMap.entrySet().iterator();
	String tmp = this.templateString;
	while (itr.hasNext()) {
	    Entry en = itr.next();
	    String varName = en.getKey();
	    String varExp = en.getValue();
	    String val = varValueMap.get(varName);
	    if (val != null) {
		tmp = StringUtils.replace(tmp, varExp, val);
	    }
	}
	return tmp;
    }

    public void reset() {
	this.varValueMap.clear();
    }
}