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- /*
- * Copyright 2011 gitblit.com.
- *
- * Licensed 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.
- */
- package com.gitblit.utils;
-
- import java.io.UnsupportedEncodingException;
- import java.security.MessageDigest;
- import java.security.NoSuchAlgorithmException;
- import java.util.ArrayList;
- import java.util.List;
- import java.util.regex.PatternSyntaxException;
-
- public class StringUtils {
-
- public static final String MD5_TYPE = "MD5:";
-
- public static boolean isEmpty(String value) {
- return value == null || value.trim().length() == 0;
- }
-
- public static String breakLinesForHtml(String string) {
- return string.replace("\r\n", "<br/>").replace("\r", "<br/>").replace("\n", "<br/>");
- }
-
- public static String escapeForHtml(String inStr, boolean changeSpace) {
- StringBuffer retStr = new StringBuffer();
- int i = 0;
- while (i < inStr.length()) {
- if (inStr.charAt(i) == '&') {
- retStr.append("&");
- } else if (inStr.charAt(i) == '<') {
- retStr.append("<");
- } else if (inStr.charAt(i) == '>') {
- retStr.append(">");
- } else if (inStr.charAt(i) == '\"') {
- retStr.append(""");
- } else if (changeSpace && inStr.charAt(i) == ' ') {
- retStr.append(" ");
- } else if (changeSpace && inStr.charAt(i) == '\t') {
- retStr.append(" ");
- } else {
- retStr.append(inStr.charAt(i));
- }
- i++;
- }
- return retStr.toString();
- }
-
- public static String encodeURL(String inStr) {
- StringBuffer retStr = new StringBuffer();
- int i = 0;
- while (i < inStr.length()) {
- if (inStr.charAt(i) == '/') {
- retStr.append("%2F");
- } else if (inStr.charAt(i) == ' ') {
- retStr.append("%20");
- } else {
- retStr.append(inStr.charAt(i));
- }
- i++;
- }
- return retStr.toString();
- }
-
- public static String flattenStrings(List<String> values) {
- return flattenStrings(values, " ");
- }
-
- public static String flattenStrings(List<String> values, String separator) {
- StringBuilder sb = new StringBuilder();
- for (String value : values) {
- sb.append(value).append(separator);
- }
- return sb.toString().trim();
- }
-
- public static String trimString(String value, int max) {
- if (value.length() <= max) {
- return value;
- }
- return value.substring(0, max - 3) + "...";
- }
-
- public static String trimShortLog(String string) {
- return trimString(string, 60);
- }
-
- public static String leftPad(String input, int length, char pad) {
- if (input.length() < length) {
- StringBuilder sb = new StringBuilder();
- for (int i = 0, len = length - input.length(); i < len; i++) {
- sb.append(pad);
- }
- sb.append(input);
- return sb.toString();
- }
- return input;
- }
-
- public static String rightPad(String input, int length, char pad) {
- if (input.length() < length) {
- StringBuilder sb = new StringBuilder();
- sb.append(input);
- for (int i = 0, len = length - input.length(); i < len; i++) {
- sb.append(pad);
- }
- return sb.toString();
- }
- return input;
- }
-
- public static String getSHA1(String text) {
- try {
- byte[] bytes = text.getBytes("iso-8859-1");
- return getSHA1(bytes);
- } catch (UnsupportedEncodingException u) {
- throw new RuntimeException(u);
- }
- }
-
- public static String getSHA1(byte[] bytes) {
- try {
- MessageDigest md = MessageDigest.getInstance("SHA-1");
- md.update(bytes, 0, bytes.length);
- byte[] digest = md.digest();
- return toHex(digest);
- } catch (NoSuchAlgorithmException t) {
- throw new RuntimeException(t);
- }
- }
-
- public static String getMD5(String string) {
- try {
- MessageDigest md = MessageDigest.getInstance("MD5");
- md.reset();
- md.update(string.getBytes("iso-8859-1"));
- byte[] digest = md.digest();
- return toHex(digest);
- } catch (UnsupportedEncodingException u) {
- throw new RuntimeException(u);
- } catch (NoSuchAlgorithmException t) {
- throw new RuntimeException(t);
- }
- }
-
- private static String toHex(byte[] bytes) {
- StringBuilder sb = new StringBuilder(bytes.length * 2);
- for (int i = 0; i < bytes.length; i++) {
- if (((int) bytes[i] & 0xff) < 0x10) {
- sb.append('0');
- }
- sb.append(Long.toString((int) bytes[i] & 0xff, 16));
- }
- return sb.toString();
- }
-
- public static String getRootPath(String path) {
- if (path.indexOf('/') > -1) {
- return path.substring(0, path.lastIndexOf('/'));
- }
- return "";
- }
-
- public static String getRelativePath(String basePath, String fullPath) {
- String relativePath = fullPath.substring(basePath.length()).replace('\\', '/');
- if (relativePath.charAt(0) == '/') {
- relativePath = relativePath.substring(1);
- }
- return relativePath;
- }
-
- public static List<String> getStringsFromValue(String value) {
- return getStringsFromValue(value, " ");
- }
-
- public static List<String> getStringsFromValue(String value, String separator) {
- List<String> strings = new ArrayList<String>();
- try {
- String[] chunks = value.split(separator);
- for (String chunk : chunks) {
- chunk = chunk.trim();
- if (chunk.length() > 0) {
- strings.add(chunk);
- }
- }
- } catch (PatternSyntaxException e) {
- throw new RuntimeException(e);
- }
- return strings;
- }
- }
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