package com.hwlcn.security.util;
public class AntPathMatcher implements PatternMatcher {
public static final String DEFAULT_PATH_SEPARATOR = "/";
private String pathSeparator = DEFAULT_PATH_SEPARATOR;
public void setPathSeparator(String pathSeparator) {
this.pathSeparator = (pathSeparator != null ? pathSeparator : DEFAULT_PATH_SEPARATOR);
}
public boolean isPattern(String path) {
return (path.indexOf('*') != -1 || path.indexOf('?') != -1);
}
public boolean matches(String pattern, String source) {
return match(pattern, source);
}
public boolean match(String pattern, String path) {
return doMatch(pattern, path, true);
}
public boolean matchStart(String pattern, String path) {
return doMatch(pattern, path, false);
}
protected boolean doMatch(String pattern, String path, boolean fullMatch) {
if (path.startsWith(this.pathSeparator) != pattern.startsWith(this.pathSeparator)) {
return false;
}
String[] pattDirs = StringUtils.tokenizeToStringArray(pattern, this.pathSeparator);
String[] pathDirs = StringUtils.tokenizeToStringArray(path, this.pathSeparator);
int pattIdxStart = 0;
int pattIdxEnd = pattDirs.length - 1;
int pathIdxStart = 0;
int pathIdxEnd = pathDirs.length - 1;
while (pattIdxStart <= pattIdxEnd && pathIdxStart <= pathIdxEnd) {
String patDir = pattDirs[pattIdxStart];
if ("**".equals(patDir)) {
break;
}
if (!matchStrings(patDir, pathDirs[pathIdxStart])) {
return false;
}
pattIdxStart++;
pathIdxStart++;
}
if (pathIdxStart > pathIdxEnd) {
if (pattIdxStart > pattIdxEnd) {
return (pattern.endsWith(this.pathSeparator) ?
path.endsWith(this.pathSeparator) : !path.endsWith(this.pathSeparator));
}
if (!fullMatch) {
return true;
}
if (pattIdxStart == pattIdxEnd && pattDirs[pattIdxStart].equals("*") &&
path.endsWith(this.pathSeparator)) {
return true;
}
for (int i = pattIdxStart; i <= pattIdxEnd; i++) {
if (!pattDirs[i].equals("**")) {
return false;
}
}
return true;
} else if (pattIdxStart > pattIdxEnd) {
return false;
} else if (!fullMatch && "**".equals(pattDirs[pattIdxStart])) {
return true;
}
while (pattIdxStart <= pattIdxEnd && pathIdxStart <= pathIdxEnd) {
String patDir = pattDirs[pattIdxEnd];
if (patDir.equals("**")) {
break;
}
if (!matchStrings(patDir, pathDirs[pathIdxEnd])) {
return false;
}
pattIdxEnd--;
pathIdxEnd--;
}
if (pathIdxStart > pathIdxEnd) {
for (int i = pattIdxStart; i <= pattIdxEnd; i++) {
if (!pattDirs[i].equals("**")) {
return false;
}
}
return true;
}
while (pattIdxStart != pattIdxEnd && pathIdxStart <= pathIdxEnd) {
int patIdxTmp = -1;
for (int i = pattIdxStart + 1; i <= pattIdxEnd; i++) {
if (pattDirs[i].equals("**")) {
patIdxTmp = i;
break;
}
}
if (patIdxTmp == pattIdxStart + 1) {
pattIdxStart++;
continue;
}
int patLength = (patIdxTmp - pattIdxStart - 1);
int strLength = (pathIdxEnd - pathIdxStart + 1);
int foundIdx = -1;
strLoop:
for (int i = 0; i <= strLength - patLength; i++) {
for (int j = 0; j < patLength; j++) {
String subPat = (String) pattDirs[pattIdxStart + j + 1];
String subStr = (String) pathDirs[pathIdxStart + i + j];
if (!matchStrings(subPat, subStr)) {
continue strLoop;
}
}
foundIdx = pathIdxStart + i;
break;
}
if (foundIdx == -1) {
return false;
}
pattIdxStart = patIdxTmp;
pathIdxStart = foundIdx + patLength;
}
for (int i = pattIdxStart; i <= pattIdxEnd; i++) {
if (!pattDirs[i].equals("**")) {
return false;
}
}
return true;
}
private boolean matchStrings(String pattern, String str) {
char[] patArr = pattern.toCharArray();
char[] strArr = str.toCharArray();
int patIdxStart = 0;
int patIdxEnd = patArr.length - 1;
int strIdxStart = 0;
int strIdxEnd = strArr.length - 1;
char ch;
boolean containsStar = false;
for (char aPatArr : patArr) {
if (aPatArr == '*') {
containsStar = true;
break;
}
}
if (!containsStar) {
if (patIdxEnd != strIdxEnd) {
return false;
}
for (int i = 0; i <= patIdxEnd; i++) {
ch = patArr[i];
if (ch != '?') {
if (ch != strArr[i]) {
return false;
}
}
}
return true;
}
if (patIdxEnd == 0) {
return true;
}
while ((ch = patArr[patIdxStart]) != '*' && strIdxStart <= strIdxEnd) {
if (ch != '?') {
if (ch != strArr[strIdxStart]) {
return false;
}
}
patIdxStart++;
strIdxStart++;
}
if (strIdxStart > strIdxEnd) {
for (int i = patIdxStart; i <= patIdxEnd; i++) {
if (patArr[i] != '*') {
return false;
}
}
return true;
}
while ((ch = patArr[patIdxEnd]) != '*' && strIdxStart <= strIdxEnd) {
if (ch != '?') {
if (ch != strArr[strIdxEnd]) {
return false;
}
}
patIdxEnd--;
strIdxEnd--;
}
if (strIdxStart > strIdxEnd) {
for (int i = patIdxStart; i <= patIdxEnd; i++) {
if (patArr[i] != '*') {
return false;
}
}
return true;
}
while (patIdxStart != patIdxEnd && strIdxStart <= strIdxEnd) {
int patIdxTmp = -1;
for (int i = patIdxStart + 1; i <= patIdxEnd; i++) {
if (patArr[i] == '*') {
patIdxTmp = i;
break;
}
}
if (patIdxTmp == patIdxStart + 1) {
patIdxStart++;
continue;
}
int patLength = (patIdxTmp - patIdxStart - 1);
int strLength = (strIdxEnd - strIdxStart + 1);
int foundIdx = -1;
strLoop:
for (int i = 0; i <= strLength - patLength; i++) {
for (int j = 0; j < patLength; j++) {
ch = patArr[patIdxStart + j + 1];
if (ch != '?') {
if (ch != strArr[strIdxStart + i + j]) {
continue strLoop;
}
}
}
foundIdx = strIdxStart + i;
break;
}
if (foundIdx == -1) {
return false;
}
patIdxStart = patIdxTmp;
strIdxStart = foundIdx + patLength;
}
for (int i = patIdxStart; i <= patIdxEnd; i++) {
if (patArr[i] != '*') {
return false;
}
}
return true;
}
public String extractPathWithinPattern(String pattern, String path) {
String[] patternParts = StringUtils.tokenizeToStringArray(pattern, this.pathSeparator);
String[] pathParts = StringUtils.tokenizeToStringArray(path, this.pathSeparator);
StringBuilder buffer = new StringBuilder();
int puts = 0;
for (int i = 0; i < patternParts.length; i++) {
String patternPart = patternParts[i];
if ((patternPart.indexOf('*') > -1 || patternPart.indexOf('?') > -1) && pathParts.length >= i + 1) {
if (puts > 0 || (i == 0 && !pattern.startsWith(this.pathSeparator))) {
buffer.append(this.pathSeparator);
}
buffer.append(pathParts[i]);
puts++;
}
}
for (int i = patternParts.length; i < pathParts.length; i++) {
if (puts > 0 || i > 0) {
buffer.append(this.pathSeparator);
}
buffer.append(pathParts[i]);
}
return buffer.toString();
}
}