commit | author | age
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/*
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* Copyright 2011 gitblit.com.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.gitblit.utils;
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JM |
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b34048
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import java.io.ByteArrayOutputStream;
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import java.io.UnsupportedEncodingException;
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import java.nio.ByteBuffer;
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import java.nio.CharBuffer;
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import java.nio.charset.CharacterCodingException;
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import java.nio.charset.Charset;
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import java.nio.charset.CharsetDecoder;
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import java.nio.charset.IllegalCharsetNameException;
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import java.nio.charset.UnsupportedCharsetException;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.Comparator;
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import java.util.LinkedHashSet;
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import java.util.List;
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import java.util.Set;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import java.util.regex.PatternSyntaxException;
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/**
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* Utility class of string functions.
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*
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* @author James Moger
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*
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*/
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public class StringUtils {
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public static final String MD5_TYPE = "MD5:";
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public static final String COMBINED_MD5_TYPE = "CMD5:";
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/**
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* Returns true if the string is null or empty.
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*
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* @param value
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* @return true if string is null or empty
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*/
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public static boolean isEmpty(String value) {
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return value == null || value.trim().length() == 0;
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}
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/**
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* Replaces carriage returns and line feeds with html line breaks.
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*
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* @param string
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* @return plain text with html line breaks
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*/
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public static String breakLinesForHtml(String string) {
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return string.replace("\r\n", "<br/>").replace("\r", "<br/>").replace("\n", "<br/>");
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}
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/**
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* Prepare text for html presentation. Replace sensitive characters with
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* html entities.
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*
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* @param inStr
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* @param changeSpace
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* @return plain text escaped for html
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*/
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public static String escapeForHtml(String inStr, boolean changeSpace) {
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StringBuilder retStr = new StringBuilder();
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int i = 0;
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while (i < inStr.length()) {
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if (inStr.charAt(i) == '&') {
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retStr.append("&");
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} else if (inStr.charAt(i) == '<') {
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retStr.append("<");
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} else if (inStr.charAt(i) == '>') {
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retStr.append(">");
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} else if (inStr.charAt(i) == '\"') {
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retStr.append(""");
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} else if (changeSpace && inStr.charAt(i) == ' ') {
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retStr.append(" ");
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} else if (changeSpace && inStr.charAt(i) == '\t') {
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retStr.append(" ");
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} else {
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retStr.append(inStr.charAt(i));
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}
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i++;
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}
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return retStr.toString();
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}
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/**
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* Decode html entities back into plain text characters.
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*
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* @param inStr
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* @return returns plain text from html
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*/
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public static String decodeFromHtml(String inStr) {
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return inStr.replace("&", "&").replace("<", "<").replace(">", ">")
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.replace(""", "\"").replace(" ", " ");
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}
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/**
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* Encodes a url parameter by escaping troublesome characters.
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*
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* @param inStr
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* @return properly escaped url
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*/
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public static String encodeURL(String inStr) {
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StringBuilder retStr = new StringBuilder();
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int i = 0;
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while (i < inStr.length()) {
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if (inStr.charAt(i) == '/') {
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retStr.append("%2F");
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} else if (inStr.charAt(i) == ' ') {
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retStr.append("%20");
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} else {
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retStr.append(inStr.charAt(i));
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}
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i++;
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}
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return retStr.toString();
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}
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d9f687
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/**
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* Flatten the list of strings into a single string with a space separator.
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*
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* @param values
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* @return flattened list
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*/
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public static String flattenStrings(Collection<String> values) {
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return flattenStrings(values, " ");
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}
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d9f687
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/**
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* Flatten the list of strings into a single string with the specified
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* separator.
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*
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* @param values
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* @param separator
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* @return flattened list
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*/
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public static String flattenStrings(Collection<String> values, String separator) {
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StringBuilder sb = new StringBuilder();
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for (String value : values) {
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sb.append(value).append(separator);
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}
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if (sb.length() > 0) {
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// truncate trailing separator
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sb.setLength(sb.length() - separator.length());
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}
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return sb.toString().trim();
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}
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/**
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* Returns a string trimmed to a maximum length with trailing ellipses. If
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* the string length is shorter than the max, the original string is
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* returned.
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*
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* @param value
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* @param max
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* @return trimmed string
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*/
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public static String trimString(String value, int max) {
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if (value.length() <= max) {
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return value;
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}
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return value.substring(0, max - 3) + "...";
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}
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d9f687
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/**
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* Left pad a string with the specified character, if the string length is
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* less than the specified length.
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*
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* @param input
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* @param length
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* @param pad
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* @return left-padded string
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*/
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public static String leftPad(String input, int length, char pad) {
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if (input.length() < length) {
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StringBuilder sb = new StringBuilder();
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for (int i = 0, len = length - input.length(); i < len; i++) {
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sb.append(pad);
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}
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sb.append(input);
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return sb.toString();
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}
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return input;
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}
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d9f687
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/**
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* Right pad a string with the specified character, if the string length is
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* less then the specified length.
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*
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* @param input
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* @param length
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* @param pad
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* @return right-padded string
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*/
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public static String rightPad(String input, int length, char pad) {
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if (input.length() < length) {
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StringBuilder sb = new StringBuilder();
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sb.append(input);
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for (int i = 0, len = length - input.length(); i < len; i++) {
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sb.append(pad);
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}
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return sb.toString();
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}
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return input;
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}
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/**
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* Calculates the SHA1 of the string.
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*
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* @param text
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* @return sha1 of the string
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*/
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public static String getSHA1(String text) {
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try {
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byte[] bytes = text.getBytes("iso-8859-1");
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return getSHA1(bytes);
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} catch (UnsupportedEncodingException u) {
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throw new RuntimeException(u);
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}
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}
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d9f687
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/**
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* Calculates the SHA1 of the byte array.
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*
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* @param bytes
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* @return sha1 of the byte array
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*/
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public static String getSHA1(byte[] bytes) {
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try {
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MessageDigest md = MessageDigest.getInstance("SHA-1");
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md.update(bytes, 0, bytes.length);
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byte[] digest = md.digest();
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return toHex(digest);
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87cc1e
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} catch (NoSuchAlgorithmException t) {
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throw new RuntimeException(t);
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}
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}
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/**
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* Calculates the MD5 of the string.
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*
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* @param string
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* @return md5 of the string
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*/
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public static String getMD5(String string) {
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try {
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MessageDigest md = MessageDigest.getInstance("MD5");
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md.reset();
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md.update(string.getBytes("iso-8859-1"));
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byte[] digest = md.digest();
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return toHex(digest);
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5450d0
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} catch (UnsupportedEncodingException u) {
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throw new RuntimeException(u);
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} catch (NoSuchAlgorithmException t) {
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throw new RuntimeException(t);
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8c9a20
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}
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}
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d9f687
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/**
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* Returns the hex representation of the byte array.
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*
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* @param bytes
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* @return byte array as hex string
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*/
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private static String toHex(byte[] bytes) {
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StringBuilder sb = new StringBuilder(bytes.length * 2);
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for (int i = 0; i < bytes.length; i++) {
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if (((int) bytes[i] & 0xff) < 0x10) {
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sb.append('0');
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}
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sb.append(Long.toString((int) bytes[i] & 0xff, 16));
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}
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return sb.toString();
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}
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85c2e6
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d9f687
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/**
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* Returns the root path of the specified path. Returns a blank string if
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* there is no root path.
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*
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* @param path
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* @return root path or blank
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*/
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public static String getRootPath(String path) {
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if (path.indexOf('/') > -1) {
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return path.substring(0, path.lastIndexOf('/'));
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00afd7
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}
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return "";
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}
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008322
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d9f687
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/**
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* Returns the path remainder after subtracting the basePath from the
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* fullPath.
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*
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* @param basePath
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* @param fullPath
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* @return the relative path
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*/
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008322
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public static String getRelativePath(String basePath, String fullPath) {
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a125cf
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String relativePath = fullPath.substring(basePath.length()).replace('\\', '/');
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if (relativePath.charAt(0) == '/') {
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relativePath = relativePath.substring(1);
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}
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return relativePath;
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}
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8c9a20
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d9f687
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/**
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* Splits the space-separated string into a list of strings.
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*
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* @param value
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* @return list of strings
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*/
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f339f5
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public static List<String> getStringsFromValue(String value) {
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return getStringsFromValue(value, " ");
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}
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8c9a20
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d9f687
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/**
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* Splits the string into a list of string by the specified separator.
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*
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* @param value
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* @param separator
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* @return list of strings
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*/
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f339f5
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public static List<String> getStringsFromValue(String value, String separator) {
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3d699c
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List<String> strings = new ArrayList<String>();
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U |
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try {
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String[] chunks = value.split(separator + "(?=([^\"]*\"[^\"]*\")*[^\"]*$)");
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for (String chunk : chunks) {
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chunk = chunk.trim();
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if (chunk.length() > 0) {
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if (chunk.charAt(0) == '"' && chunk.charAt(chunk.length() - 1) == '"') {
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// strip double quotes
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chunk = chunk.substring(1, chunk.length() - 1).trim();
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}
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strings.add(chunk);
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}
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}
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} catch (PatternSyntaxException e) {
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throw new RuntimeException(e);
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}
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return strings;
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}
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831469
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361 |
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JM |
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/**
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* Validates that a name is composed of letters, digits, or limited other
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* characters.
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*
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* @param name
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* @return the first invalid character found or null if string is acceptable
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*/
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public static Character findInvalidCharacter(String name) {
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char[] validChars = { '/', '.', '_', '-' };
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for (char c : name.toCharArray()) {
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372 |
if (!Character.isLetterOrDigit(c)) {
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boolean ok = false;
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for (char vc : validChars) {
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ok |= c == vc;
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}
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if (!ok) {
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return c;
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}
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}
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}
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return null;
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}
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/**
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* Simple fuzzy string comparison. This is a case-insensitive check. A
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* single wildcard * value is supported.
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*
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* @param value
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* @param pattern
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* @return true if the value matches the pattern
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*/
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public static boolean fuzzyMatch(String value, String pattern) {
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394 |
if (value.equalsIgnoreCase(pattern)) {
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return true;
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}
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397 |
if (pattern.contains("*")) {
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boolean prefixMatches = false;
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boolean suffixMatches = false;
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401 |
int wildcard = pattern.indexOf('*');
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String prefix = pattern.substring(0, wildcard).toLowerCase();
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prefixMatches = value.toLowerCase().startsWith(prefix);
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405 |
if (pattern.length() > (wildcard + 1)) {
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String suffix = pattern.substring(wildcard + 1).toLowerCase();
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407 |
suffixMatches = value.toLowerCase().endsWith(suffix);
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408 |
return prefixMatches && suffixMatches;
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}
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410 |
return prefixMatches || suffixMatches;
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411 |
}
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412 |
return false;
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413 |
}
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94750e
|
414 |
|
JM |
415 |
/**
|
|
416 |
* Compare two repository names for proper group sorting.
|
|
417 |
*
|
|
418 |
* @param r1
|
|
419 |
* @param r2
|
|
420 |
* @return
|
|
421 |
*/
|
|
422 |
public static int compareRepositoryNames(String r1, String r2) {
|
|
423 |
// sort root repositories first, alphabetically
|
|
424 |
// then sort grouped repositories, alphabetically
|
|
425 |
int s1 = r1.indexOf('/');
|
|
426 |
int s2 = r2.indexOf('/');
|
|
427 |
if (s1 == -1 && s2 == -1) {
|
|
428 |
// neither grouped
|
|
429 |
return r1.compareTo(r2);
|
|
430 |
} else if (s1 > -1 && s2 > -1) {
|
|
431 |
// both grouped
|
|
432 |
return r1.compareTo(r2);
|
|
433 |
} else if (s1 == -1) {
|
|
434 |
return -1;
|
|
435 |
} else if (s2 == -1) {
|
|
436 |
return 1;
|
|
437 |
}
|
|
438 |
return 0;
|
|
439 |
}
|
|
440 |
|
|
441 |
/**
|
|
442 |
* Sort grouped repository names.
|
|
443 |
*
|
|
444 |
* @param list
|
|
445 |
*/
|
|
446 |
public static void sortRepositorynames(List<String> list) {
|
|
447 |
Collections.sort(list, new Comparator<String>() {
|
|
448 |
@Override
|
|
449 |
public int compare(String o1, String o2) {
|
|
450 |
return compareRepositoryNames(o1, o2);
|
|
451 |
}
|
|
452 |
});
|
|
453 |
}
|
309c55
|
454 |
|
JM |
455 |
public static String getColor(String value) {
|
|
456 |
int cs = 0;
|
|
457 |
for (char c : getMD5(value.toLowerCase()).toCharArray()) {
|
|
458 |
cs += c;
|
|
459 |
}
|
|
460 |
int n = (cs % 360);
|
|
461 |
float hue = ((float) n) / 360;
|
|
462 |
return hsvToRgb(hue, 0.90f, 0.65f);
|
|
463 |
}
|
|
464 |
|
|
465 |
public static String hsvToRgb(float hue, float saturation, float value) {
|
|
466 |
int h = (int) (hue * 6);
|
|
467 |
float f = hue * 6 - h;
|
|
468 |
float p = value * (1 - saturation);
|
|
469 |
float q = value * (1 - f * saturation);
|
|
470 |
float t = value * (1 - (1 - f) * saturation);
|
|
471 |
|
|
472 |
switch (h) {
|
|
473 |
case 0:
|
|
474 |
return rgbToString(value, t, p);
|
|
475 |
case 1:
|
|
476 |
return rgbToString(q, value, p);
|
|
477 |
case 2:
|
|
478 |
return rgbToString(p, value, t);
|
|
479 |
case 3:
|
|
480 |
return rgbToString(p, q, value);
|
|
481 |
case 4:
|
|
482 |
return rgbToString(t, p, value);
|
|
483 |
case 5:
|
|
484 |
return rgbToString(value, p, q);
|
|
485 |
default:
|
|
486 |
throw new RuntimeException(
|
|
487 |
"Something went wrong when converting from HSV to RGB. Input was " + hue + ", "
|
|
488 |
+ saturation + ", " + value);
|
|
489 |
}
|
|
490 |
}
|
|
491 |
|
|
492 |
public static String rgbToString(float r, float g, float b) {
|
|
493 |
String rs = Integer.toHexString((int) (r * 256));
|
|
494 |
String gs = Integer.toHexString((int) (g * 256));
|
|
495 |
String bs = Integer.toHexString((int) (b * 256));
|
|
496 |
return "#" + rs + gs + bs;
|
|
497 |
}
|
6c6fbf
|
498 |
|
12c31e
|
499 |
/**
|
JM |
500 |
* Strips a trailing ".git" from the value.
|
|
501 |
*
|
|
502 |
* @param value
|
|
503 |
* @return a stripped value or the original value if .git is not found
|
|
504 |
*/
|
6c6fbf
|
505 |
public static String stripDotGit(String value) {
|
JM |
506 |
if (value.toLowerCase().endsWith(".git")) {
|
|
507 |
return value.substring(0, value.length() - 4);
|
|
508 |
}
|
|
509 |
return value;
|
|
510 |
}
|
672296
|
511 |
|
12c31e
|
512 |
/**
|
JM |
513 |
* Count the number of lines in a string.
|
|
514 |
*
|
|
515 |
* @param value
|
|
516 |
* @return the line count
|
|
517 |
*/
|
672296
|
518 |
public static int countLines(String value) {
|
JM |
519 |
if (isEmpty(value)) {
|
|
520 |
return 0;
|
|
521 |
}
|
|
522 |
return value.split("\n").length;
|
|
523 |
}
|
12c31e
|
524 |
|
JM |
525 |
/**
|
|
526 |
* Returns the file extension of a path.
|
|
527 |
*
|
|
528 |
* @param path
|
|
529 |
* @return a blank string or a file extension
|
|
530 |
*/
|
|
531 |
public static String getFileExtension(String path) {
|
|
532 |
int lastDot = path.lastIndexOf('.');
|
|
533 |
if (lastDot > -1) {
|
|
534 |
return path.substring(lastDot + 1);
|
|
535 |
}
|
|
536 |
return "";
|
|
537 |
}
|
f3b625
|
538 |
|
JC |
539 |
/**
|
|
540 |
* Replace all occurences of a substring within a string with
|
|
541 |
* another string.
|
|
542 |
*
|
|
543 |
* From Spring StringUtils.
|
|
544 |
*
|
|
545 |
* @param inString String to examine
|
|
546 |
* @param oldPattern String to replace
|
|
547 |
* @param newPattern String to insert
|
|
548 |
* @return a String with the replacements
|
|
549 |
*/
|
|
550 |
public static String replace(String inString, String oldPattern, String newPattern) {
|
|
551 |
StringBuilder sb = new StringBuilder();
|
|
552 |
int pos = 0; // our position in the old string
|
|
553 |
int index = inString.indexOf(oldPattern);
|
|
554 |
// the index of an occurrence we've found, or -1
|
|
555 |
int patLen = oldPattern.length();
|
|
556 |
while (index >= 0) {
|
|
557 |
sb.append(inString.substring(pos, index));
|
|
558 |
sb.append(newPattern);
|
|
559 |
pos = index + patLen;
|
|
560 |
index = inString.indexOf(oldPattern, pos);
|
|
561 |
}
|
|
562 |
sb.append(inString.substring(pos));
|
|
563 |
// remember to append any characters to the right of a match
|
|
564 |
return sb.toString();
|
|
565 |
}
|
ae9e15
|
566 |
|
JM |
567 |
/**
|
|
568 |
* Decodes a string by trying several charsets until one does not throw a
|
|
569 |
* coding exception. Last resort is to interpret as UTF-8 with illegal
|
|
570 |
* character substitution.
|
|
571 |
*
|
|
572 |
* @param content
|
|
573 |
* @param charsets optional
|
|
574 |
* @return a string
|
|
575 |
*/
|
|
576 |
public static String decodeString(byte [] content, String... charsets) {
|
|
577 |
Set<String> sets = new LinkedHashSet<String>();
|
|
578 |
if (!ArrayUtils.isEmpty(charsets)) {
|
|
579 |
sets.addAll(Arrays.asList(charsets));
|
|
580 |
}
|
086c04
|
581 |
String value = null;
|
ae9e15
|
582 |
sets.addAll(Arrays.asList("UTF-8", "ISO-8859-1", Charset.defaultCharset().name()));
|
JM |
583 |
for (String charset : sets) {
|
|
584 |
try {
|
|
585 |
Charset cs = Charset.forName(charset);
|
|
586 |
CharsetDecoder decoder = cs.newDecoder();
|
|
587 |
CharBuffer buffer = decoder.decode(ByteBuffer.wrap(content));
|
086c04
|
588 |
value = buffer.toString();
|
JM |
589 |
break;
|
ae9e15
|
590 |
} catch (CharacterCodingException e) {
|
JM |
591 |
// ignore and advance to the next charset
|
|
592 |
} catch (IllegalCharsetNameException e) {
|
|
593 |
// ignore illegal charset names
|
|
594 |
} catch (UnsupportedCharsetException e) {
|
|
595 |
// ignore unsupported charsets
|
|
596 |
}
|
|
597 |
}
|
086c04
|
598 |
if (value.startsWith("\uFEFF")) {
|
JM |
599 |
// strip UTF-8 BOM
|
|
600 |
return value.substring(1);
|
|
601 |
}
|
|
602 |
return value;
|
ae9e15
|
603 |
}
|
eb870f
|
604 |
|
JM |
605 |
/**
|
|
606 |
* Attempt to extract a repository name from a given url using regular
|
|
607 |
* expressions. If no match is made, then return whatever trails after
|
|
608 |
* the final / character.
|
|
609 |
*
|
|
610 |
* @param regexUrls
|
|
611 |
* @return a repository path
|
|
612 |
*/
|
|
613 |
public static String extractRepositoryPath(String url, String... urlpatterns) {
|
|
614 |
for (String urlPattern : urlpatterns) {
|
|
615 |
Pattern p = Pattern.compile(urlPattern);
|
|
616 |
Matcher m = p.matcher(url);
|
|
617 |
while (m.find()) {
|
|
618 |
String repositoryPath = m.group(1);
|
|
619 |
return repositoryPath;
|
|
620 |
}
|
|
621 |
}
|
|
622 |
// last resort
|
|
623 |
if (url.lastIndexOf('/') > -1) {
|
|
624 |
return url.substring(url.lastIndexOf('/') + 1);
|
|
625 |
}
|
|
626 |
return url;
|
|
627 |
}
|
b34048
|
628 |
|
JM |
629 |
/**
|
|
630 |
* Converts a string with \nnn sequences into a UTF-8 encoded string.
|
|
631 |
* @param input
|
|
632 |
* @return
|
|
633 |
*/
|
|
634 |
public static String convertOctal(String input) {
|
|
635 |
try {
|
|
636 |
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
|
|
637 |
Pattern p = Pattern.compile("(\\\\\\d{3})");
|
|
638 |
Matcher m = p.matcher(input);
|
|
639 |
int i = 0;
|
|
640 |
while (m.find()) {
|
|
641 |
bytes.write(input.substring(i, m.start()).getBytes("UTF-8"));
|
|
642 |
// replace octal encoded value
|
|
643 |
// strip leading \ character
|
|
644 |
String oct = m.group().substring(1);
|
|
645 |
bytes.write(Integer.parseInt(oct, 8));
|
|
646 |
i = m.end();
|
|
647 |
}
|
|
648 |
if (bytes.size() == 0) {
|
|
649 |
// no octal matches
|
|
650 |
return input;
|
|
651 |
} else {
|
|
652 |
if (i < input.length()) {
|
|
653 |
// add remainder of string
|
|
654 |
bytes.write(input.substring(i).getBytes("UTF-8"));
|
|
655 |
}
|
|
656 |
}
|
|
657 |
return bytes.toString("UTF-8");
|
|
658 |
} catch (Exception e) {
|
|
659 |
e.printStackTrace();
|
|
660 |
}
|
|
661 |
return input;
|
|
662 |
}
|
309c55
|
663 |
} |