package com.founderdpt.comm.xworld.util;
import java.beans.PropertyDescriptor;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.lang.StringUtils;
public class StringMatch {
public static String translateParamtwo(String expression, char[] openChars,
Map map) {
int maxLoopCount = 1;
String result = expression;
for (char open : openChars) {
int loopCount = 1;
int pos = 0;
// this creates an implicit StringBuffer and shouldn't be used in
// the inner loop
final String lookupChars = open + "{";
while (true) {
int start = expression.indexOf(lookupChars, pos);
if (start == -1) {
pos = 0;
loopCount++;
start = expression.indexOf(lookupChars);
}
if (loopCount > maxLoopCount) {
// translateVariables prevent infinite loop / expression
// recursive evaluation
break;
}
int length = expression.length();
int x = start + 2;
int end;
char c;
int count = 1;
while (start != -1 && x < length && count != 0) {
c = expression.charAt(x++);
if (c == '{') {
count++;
} else if (c == '}') {
count--;
}
}
end = x - 1;
if ((start != -1) && (end != -1) && (count == 0)) {
String var = expression.substring(start + 2, end);
Object obj = map.get(var);
String o ="";
if(obj instanceof String[]){
o=((String[])obj)[0];
}
if(obj instanceof String){
o=(String) obj;
}
String left = expression.substring(0, start);
String right = expression.substring(end + 1);
String middle = null;
if (o != null) {
middle = o.toString();
if (StringUtils.isEmpty(left)) {
result = o;
} else {
result = left.concat(middle);
}
if (StringUtils.isNotEmpty(right)) {
result = result.toString().concat(right);
}
expression = left.concat(middle).concat(right);
} else {
// the variable doesn't exist, so don't display anything
expression = left.concat(right);
result = expression;
}
pos = (left != null && left.length() > 0 ? left.length() - 1
: 0)
+ (middle != null && middle.length() > 0 ? middle
.length() - 1 : 0) + 1;
pos = Math.max(pos, 1);
} else {
break;
}
}
}
return result;
}
/**
* 匹配$[XXX]
* @param expression
* @param openChars
* @param map
* @return
*/
public static String translateParam(String expression, char[] openChars,
Map map) {
int maxLoopCount = 1;
String result = expression;
for (char open : openChars) {
int loopCount = 1;
int pos = 0;
// this creates an implicit StringBuffer and shouldn't be used in
// the inner loop
final String lookupChars = open + "[";
while (true) {
int start = expression.indexOf(lookupChars, pos);
if (start == -1) {
pos = 0;
loopCount++;
start = expression.indexOf(lookupChars);
}
if (loopCount > maxLoopCount) {
// translateVariables prevent infinite loop / expression
// recursive evaluation
break;
}
int length = expression.length();
int x = start + 2;
int end;
char c;
int count = 1;
while (start != -1 && x < length && count != 0) {
c = expression.charAt(x++);
if (c == '[') {
count++;
} else if (c == ']') {
count--;
}
}
end = x - 1;
if ((start != -1) && (end != -1) && (count == 0)) {
String var = expression.substring(start + 2, end);
Object obj = map.get(var);
String o ="";
if(obj instanceof String[]){
o=((String[])obj)[0];
}
if(obj instanceof String){
o=(String) obj;
}
String left = expression.substring(0, start);
String right = expression.substring(end + 1);
String middle = null;
if (o != null) {
middle = o.toString();
if (StringUtils.isEmpty(left)) {
result = o;
} else {
result = left.concat(middle);
}
if (StringUtils.isNotEmpty(right)) {
result = result.toString().concat(right);
}
expression = left.concat(middle).concat(right);
} else {
// the variable doesn't exist, so don't display anything
expression = left.concat(right);
result = expression;
}
pos = (left != null && left.length() > 0 ? left.length() - 1
: 0)
+ (middle != null && middle.length() > 0 ? middle
.length() - 1 : 0) + 1;
pos = Math.max(pos, 1);
} else {
break;
}
}
}
return result;
}
/**
* 匹配${XXX}
* @param expression
* @param openChars
* @param map
* @return
*/
public static String translateParam(String expression,Map map) {
if(map==null){
return expression;
}
return translateParamtwo(expression, new char[] { '$' },map);
}
/**
* 全局匹配 匹配$[XXX]
* @param expression
* @param map
* @return
*/
public static String translateParamGlobal(String expression,Map map) {
if(map==null){
return expression;
}
return translateParam(expression, new char[] { '$' },map);
}
}