package org.jeecgframework.core.util;
import java.util.Comparator;
import org.jeecgframework.web.system.pojo.base.TSFunction;
/**
* @ClassName: NumberComparator
* @Description: TODO(字符串比较器)
* @author jeecg
* @date 2013-1-31 下午06:18:35
*
*/
public class NumberComparator implements Comparator<Object> {
private boolean ignoreCase = true;
public NumberComparator() {
}
public NumberComparator(boolean ignoreCase) {
this.ignoreCase = ignoreCase;
}
public int compare(Object obj1, Object obj2) {
String o1 = "";
String o2 = "";
if (ignoreCase) {
TSFunction c1 = (TSFunction) obj1;
TSFunction c2 = (TSFunction) obj2;
o1 = c1.getFunctionOrder();
o2 = c2.getFunctionOrder();
}
if (o1 != null && o2 != null) {
for (int i = 0; i < o1.length(); i++) {
if (i == o1.length() && i < o2.length()) {
return -1;
} else if (i == o2.length() && i < o1.length()) {
return 1;
}
char ch1 = o1.charAt(i);
char ch2 = o2.charAt(i);
if (ch1 >= '0' && ch2 <= '9') {
int i1 = getNumber(o1.substring(i));
int i2 = getNumber(o2.substring(i));
if (i1 == i2) {
continue;
} else {
return i1 - i2;
}
} else if (ch1 != ch2) {
return ch1 - ch2;
}
}
}
return 0;
}
private int getNumber(String str) {
int num = Integer.MAX_VALUE;
int bits = 0;
for (int i = 0; i < str.length(); i++) {
if (str.charAt(i) >= '0' && str.charAt(i) <= '9') {
bits++;
} else {
break;
}
}
if (bits > 0) {
num = Integer.parseInt(str.substring(0, bits));
}
return num;
}
}