org.codehaus.mojo.wagon.shared.SelectorUtils Maven / Gradle / Ivy
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/**
* Copyright 2008-2012 The Kuali Foundation
*
* Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
*
* 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.codehaus.mojo.wagon.shared;
/*
* Licensed to the Apache Software Foundation (ASF) under one or more contributor license
* agreements. See the NOTICE file distributed with this work for additional information regarding
* copyright ownership. The ASF licenses this file to you 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.
*/
import java.util.StringTokenizer;
import java.util.Vector;
/**
* A copy of plexus-util's SelectorUtils to deal with unix file separator only.
*/
public final class SelectorUtils {
/**
* Tests whether or not a given path matches the start of a given pattern up to the first "**".
*
* This is not a general purpose test and should only be used if you can live with false positives. For example,
* pattern=**\a and str=b will yield true.
*
* @param pattern
* The pattern to match against. Must not be null.
* @param str
* The path to match, as a String. Must not be null.
*
* @return whether or not a given path matches the start of a given pattern up to the first "**".
*/
public static boolean matchPatternStart(String pattern, String str) {
return matchPatternStart(pattern, str, true);
}
/**
* Tests whether or not a given path matches the start of a given pattern up to the first "**".
*
* This is not a general purpose test and should only be used if you can live with false positives. For example,
* pattern=**\a and str=b will yield true.
*
* @param pattern
* The pattern to match against. Must not be null.
* @param str
* The path to match, as a String. Must not be null.
* @param isCaseSensitive
* Whether or not matching should be performed case sensitively.
*
* @return whether or not a given path matches the start of a given pattern up to the first "**".
*/
public static boolean matchPatternStart(String pattern, String str, boolean isCaseSensitive) {
// When str starts with a separator, pattern has to start with a
// separator.
// When pattern starts with a separator, str has to start with a
// separator.
if (str.startsWith("/") != pattern.startsWith("/")) {
return false;
}
Vector patDirs = tokenizePath(pattern);
Vector strDirs = tokenizePath(str);
int patIdxStart = 0;
int patIdxEnd = patDirs.size() - 1;
int strIdxStart = 0;
int strIdxEnd = strDirs.size() - 1;
// up to first '**'
while (patIdxStart <= patIdxEnd && strIdxStart <= strIdxEnd) {
String patDir = (String) patDirs.elementAt(patIdxStart);
if (patDir.equals("**")) {
break;
}
if (!match(patDir, (String) strDirs.elementAt(strIdxStart), isCaseSensitive)) {
return false;
}
patIdxStart++;
strIdxStart++;
}
if (strIdxStart > strIdxEnd) {
// String is exhausted
return true;
} else if (patIdxStart > patIdxEnd) {
// String not exhausted, but pattern is. Failure.
return false;
} else {
// pattern now holds ** while string is not exhausted
// this will generate false positives but we can live with that.
return true;
}
}
/**
* Tests whether or not a given path matches a given pattern.
*
* @param pattern
* The pattern to match against. Must not be null.
* @param str
* The path to match, as a String. Must not be null.
*
* @return true if the pattern matches against the string, or false otherwise.
*/
public static boolean matchPath(String pattern, String str) {
return matchPath(pattern, str, true);
}
/**
* Tests whether or not a given path matches a given pattern.
*
* @param pattern
* The pattern to match against. Must not be null.
* @param str
* The path to match, as a String. Must not be null.
* @param isCaseSensitive
* Whether or not matching should be performed case sensitively.
*
* @return true if the pattern matches against the string, or false otherwise.
*/
public static boolean matchPath(String pattern, String str, boolean isCaseSensitive) {
// When str starts with a separator, pattern has to start with a
// separator.
// When pattern starts with a separator, str has to start with a
// separator.
if (str.startsWith("/") != pattern.startsWith("/")) {
return false;
}
Vector patDirs = tokenizePath(pattern);
Vector strDirs = tokenizePath(str);
int patIdxStart = 0;
int patIdxEnd = patDirs.size() - 1;
int strIdxStart = 0;
int strIdxEnd = strDirs.size() - 1;
// up to first '**'
while (patIdxStart <= patIdxEnd && strIdxStart <= strIdxEnd) {
String patDir = (String) patDirs.elementAt(patIdxStart);
if (patDir.equals("**")) {
break;
}
if (!match(patDir, (String) strDirs.elementAt(strIdxStart), isCaseSensitive)) {
patDirs = null;
strDirs = null;
return false;
}
patIdxStart++;
strIdxStart++;
}
if (strIdxStart > strIdxEnd) {
// String is exhausted
for (int i = patIdxStart; i <= patIdxEnd; i++) {
if (!patDirs.elementAt(i).equals("**")) {
patDirs = null;
strDirs = null;
return false;
}
}
return true;
} else {
if (patIdxStart > patIdxEnd) {
// String not exhausted, but pattern is. Failure.
patDirs = null;
strDirs = null;
return false;
}
}
// up to last '**'
while (patIdxStart <= patIdxEnd && strIdxStart <= strIdxEnd) {
String patDir = (String) patDirs.elementAt(patIdxEnd);
if (patDir.equals("**")) {
break;
}
if (!match(patDir, (String) strDirs.elementAt(strIdxEnd), isCaseSensitive)) {
patDirs = null;
strDirs = null;
return false;
}
patIdxEnd--;
strIdxEnd--;
}
if (strIdxStart > strIdxEnd) {
// String is exhausted
for (int i = patIdxStart; i <= patIdxEnd; i++) {
if (!patDirs.elementAt(i).equals("**")) {
patDirs = null;
strDirs = null;
return false;
}
}
return true;
}
while (patIdxStart != patIdxEnd && strIdxStart <= strIdxEnd) {
int patIdxTmp = -1;
for (int i = patIdxStart + 1; i <= patIdxEnd; i++) {
if (patDirs.elementAt(i).equals("**")) {
patIdxTmp = i;
break;
}
}
if (patIdxTmp == patIdxStart + 1) {
// '**/**' situation, so skip one
patIdxStart++;
continue;
}
// Find the pattern between padIdxStart & padIdxTmp in str between
// strIdxStart & strIdxEnd
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++) {
String subPat = (String) patDirs.elementAt(patIdxStart + j + 1);
String subStr = (String) strDirs.elementAt(strIdxStart + i + j);
if (!match(subPat, subStr, isCaseSensitive)) {
continue strLoop;
}
}
foundIdx = strIdxStart + i;
break;
}
if (foundIdx == -1) {
patDirs = null;
strDirs = null;
return false;
}
patIdxStart = patIdxTmp;
strIdxStart = foundIdx + patLength;
}
for (int i = patIdxStart; i <= patIdxEnd; i++) {
if (!patDirs.elementAt(i).equals("**")) {
patDirs = null;
strDirs = null;
return false;
}
}
return true;
}
/**
* Tests whether or not a string matches against a pattern. The pattern may contain two special characters:
* '*' means zero or more characters
* '?' means one and only one character
*
* @param pattern
* The pattern to match against. Must not be null.
* @param str
* The string which must be matched against the pattern. Must not be null.
*
* @return true if the string matches against the pattern, or false otherwise.
*/
public static boolean match(String pattern, String str) {
return match(pattern, str, true);
}
/**
* Tests whether or not a string matches against a pattern. The pattern may contain two special characters:
* '*' means zero or more characters
* '?' means one and only one character
*
* @param pattern
* The pattern to match against. Must not be null.
* @param str
* The string which must be matched against the pattern. Must not be null.
* @param isCaseSensitive
* Whether or not matching should be performed case sensitively.
*
*
* @return true if the string matches against the pattern, or false otherwise.
*/
public static boolean match(String pattern, String str, boolean isCaseSensitive) {
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 (int i = 0; i < patArr.length; i++) {
if (patArr[i] == '*') {
containsStar = true;
break;
}
}
if (!containsStar) {
// No '*'s, so we make a shortcut
if (patIdxEnd != strIdxEnd) {
return false; // Pattern and string do not have the same size
}
for (int i = 0; i <= patIdxEnd; i++) {
ch = patArr[i];
if (ch != '?' && !equals(ch, strArr[i], isCaseSensitive)) {
return false; // Character mismatch
}
}
return true; // String matches against pattern
}
if (patIdxEnd == 0) {
return true; // Pattern contains only '*', which matches anything
}
// Process characters before first star
while ((ch = patArr[patIdxStart]) != '*' && strIdxStart <= strIdxEnd) {
if (ch != '?' && !equals(ch, strArr[strIdxStart], isCaseSensitive)) {
return false; // Character mismatch
}
patIdxStart++;
strIdxStart++;
}
if (strIdxStart > strIdxEnd) {
// All characters in the string are used. Check if only '*'s are
// left in the pattern. If so, we succeeded. Otherwise failure.
for (int i = patIdxStart; i <= patIdxEnd; i++) {
if (patArr[i] != '*') {
return false;
}
}
return true;
}
// Process characters after last star
while ((ch = patArr[patIdxEnd]) != '*' && strIdxStart <= strIdxEnd) {
if (ch != '?' && !equals(ch, strArr[strIdxEnd], isCaseSensitive)) {
return false; // Character mismatch
}
patIdxEnd--;
strIdxEnd--;
}
if (strIdxStart > strIdxEnd) {
// All characters in the string are used. Check if only '*'s are
// left in the pattern. If so, we succeeded. Otherwise failure.
for (int i = patIdxStart; i <= patIdxEnd; i++) {
if (patArr[i] != '*') {
return false;
}
}
return true;
}
// process pattern between stars. padIdxStart and patIdxEnd point
// always to a '*'.
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) {
// Two stars next to each other, skip the first one.
patIdxStart++;
continue;
}
// Find the pattern between padIdxStart & padIdxTmp in str between
// strIdxStart & strIdxEnd
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 != '?' && !equals(ch, strArr[strIdxStart + i + j], isCaseSensitive)) {
continue strLoop;
}
}
foundIdx = strIdxStart + i;
break;
}
if (foundIdx == -1) {
return false;
}
patIdxStart = patIdxTmp;
strIdxStart = foundIdx + patLength;
}
// All characters in the string are used. Check if only '*'s are left
// in the pattern. If so, we succeeded. Otherwise failure.
for (int i = patIdxStart; i <= patIdxEnd; i++) {
if (patArr[i] != '*') {
return false;
}
}
return true;
}
/**
* Tests whether two characters are equal.
*/
private static boolean equals(char c1, char c2, boolean isCaseSensitive) {
if (c1 == c2) {
return true;
}
if (!isCaseSensitive) {
// NOTE: Try both upper case and lower case as done by String.equalsIgnoreCase()
if (Character.toUpperCase(c1) == Character.toUpperCase(c2)
|| Character.toLowerCase(c1) == Character.toLowerCase(c2)) {
return true;
}
}
return false;
}
/**
* Breaks a path up into a Vector of path elements, tokenizing on File.separator.
*
* @param path
* Path to tokenize. Must not be null.
*
* @return a Vector of path elements from the tokenized path
*/
public static Vector tokenizePath(String path) {
Vector ret = new Vector();
StringTokenizer st = new StringTokenizer(path, "/");
while (st.hasMoreTokens()) {
ret.addElement(st.nextToken());
}
return ret;
}
}