package cn.autoform.web.client.util.auto;

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

import cn.autoform.util.tool.JSONTool;

public class OnlyCharacters {

	private static final Pattern RULE_REGEXT = Pattern.compile("[$][a-zA-Z]+[{][^}]+[}]");
	
	public static String getOnlyStr(String rule){
		RuleInfo info = getRuleInfo(rule);
		for(Map.Entry<String, RuleParam> entry : info.getParam().entrySet()){
			info.setRule(info.getRule().replace(entry.getKey(), entry.getValue().getVal()));
		}
		return info.getRule();
	}
	
//	public static void main(String[] args) {
//		System.err.println(getOnlyStr("$d{YYYY-MM}_$rs{9}_$rn{8}"));
//	}
	
	public static RuleInfo getRuleInfo(String rule) {
		Map<String, RuleParam> param = new HashMap<String, RuleParam>();
		Matcher matcher = RULE_REGEXT.matcher(rule);
		String group = null,
				key  = null;
		int index = 0;
		while(matcher.find()){
			group = matcher.group();
			key = String.format("#%d#", index);
			rule = rule.substring(0, rule.indexOf(group)) + key + rule.substring(rule.indexOf(group)+group.length(), rule.length());
			param.put(key, new RuleParam(group));
			index ++;
		}
		return new RuleInfo(rule, param);
	}

	/**
	 * 公式信息
	 * @author WangYX
	 *
	 */
	public static class RuleInfo{
		
		private String rule;
		
		private Map<String, RuleParam> param;

		public RuleInfo(String rule, Map<String, RuleParam> param) {
			super();
			this.rule = rule;
			this.param = param;
		}

		public String getRule() {
			return rule;
		}

		public void setRule(String rule) {
			this.rule = rule;
		}

		public Map<String, RuleParam> getParam() {
			return param;
		}

		public void setParam(Map<String, RuleParam> param) {
			this.param = param;
		}
		
	}
}