| /* |
| * 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. |
| */ |
| package org.netbeans.modules.glassfish.tooling.utils; |
| |
| import java.io.File; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| /** |
| * OS related utilities |
| * <p/> |
| * @author Tomas Kraus, Peter Benedikovic |
| */ |
| public class OsUtils { |
| |
| //////////////////////////////////////////////////////////////////////////// |
| // Class attributes // |
| //////////////////////////////////////////////////////////////////////////// |
| |
| /** System lines separator. */ |
| public static final String LINES_SEPARATOR |
| = System.getProperty("line.separator"); |
| |
| /** System file separator length. */ |
| public static final int FILE_SEPARATOR_LENGTH = File.separator.length(); |
| |
| /** System property to retrieve OS name. */ |
| public static final String OS_NAME_PROPERTY = "os.name"; |
| |
| /** OS name from system properties. */ |
| public static final String OS_NAME = System.getProperty(OS_NAME_PROPERTY); |
| |
| /** OS name from system properties converted to upper case. */ |
| public static final String OS_NAME_UPCASE = |
| OS_NAME != null ? OS_NAME.toUpperCase() : OS_NAME; |
| |
| /** |
| * Windows OS name substring used to identify Windows in OS name converted |
| * to upper case. |
| */ |
| private static final String OS_WIN_SUBSTR = "WINDOWS"; |
| |
| /** |
| * Test if OS where this JDK is running windows. |
| * <p/> |
| * Internally cached value. |
| */ |
| private static final boolean IS_WIN = |
| OS_NAME != null ? OS_NAME_UPCASE.contains(OS_WIN_SUBSTR) : false; |
| |
| /** Executable file suffix (nothing on UNIX, .exe on windows, etc.). */ |
| public static final String EXEC_SUFFIX = IS_WIN ? ".exe" : ""; |
| |
| //////////////////////////////////////////////////////////////////////////// |
| // Static methods // |
| //////////////////////////////////////////////////////////////////////////// |
| |
| /** |
| * Check if OS where this JDK is running is windows. |
| * <p/> |
| * @return <code>true</code> when this JDK is running on Windows |
| * or <code>false</code> otherwise. |
| */ |
| public static boolean isWin() { |
| return IS_WIN; |
| } |
| |
| /** |
| * Parses parameters from a given string in shell-like manner and append |
| * them to executable file. |
| * <p/> |
| * Users of the Bourne shell (e.g. on Unix) will already be familiar with |
| * the behavior. For example you should be able to: |
| * <ul> |
| * <li/>Include command names with embedded spaces, such as |
| * <code>c:\Program Files\jdk\bin\javac</code>. |
| * <li/>Include extra command arguments, such as <code>-Dname=value</code>. |
| * <li/>Do anything else which might require unusual characters |
| * or processing. For example: |
| * <p/><code><pre> |
| * "c:\program files\jdk\bin\java" -Dmessage="Hello /\\/\\ there!" -Xmx128m |
| * </pre></code> |
| * <p/>This example would create the following executable name and |
| * arguments: |
| * <ol> |
| * <li/> <code>c:\program files\jdk\bin\java</code> |
| * <li/> <code>-Dmessage=Hello /\/\ there!</code> |
| * <li/> <code>-Xmx128m</code> |
| * </ol> |
| * Note that the command string does not escape its backslashes--under |
| * the assumption that Windows users will not think to do this, meaningless |
| * escapes are just left as backslashes plus following character. |
| * </ul> |
| * <em>Caveat</em>: even after parsing, Windows programs (such as the |
| * Java launcher) may not fully honor certain characters, such as quotes, |
| * in command names or arguments. This is because programs under Windows |
| * frequently perform their own parsing and unescaping (since the shell |
| * cannot be relied on to do this). On Unix, this problem should not occur. |
| * <p/> |
| * @param args A String to parse |
| * @return An array of executable file and parameters to be passed to it. |
| */ |
| public static String[] parseParameters(String exec, String args) { |
| int NULL = 0x0; // STICK + whitespace or NULL + non_" |
| int INPARAM = 0x1; // NULL + " or STICK + " or INPARAMPENDING + "\ // NOI18N |
| int INPARAMPENDING = 0x2; // INPARAM + \ |
| int STICK = 0x4; // INPARAM + " or STICK + non_" // NOI18N |
| int STICKPENDING = 0x8; // STICK + \ |
| List<String> params = new LinkedList<>(); |
| params.add(exec); |
| char c; |
| |
| int state = NULL; |
| StringBuilder buff = new StringBuilder(20); |
| int slength = args.length(); |
| |
| for (int i = 0; i < slength; i++) { |
| c = args.charAt(i); |
| |
| if (Character.isWhitespace(c)) { |
| if (state == NULL) { |
| if (buff.length() > 0) { |
| params.add(buff.toString()); |
| buff.setLength(0); |
| } |
| } else if (state == STICK) { |
| params.add(buff.toString()); |
| buff.setLength(0); |
| state = NULL; |
| } else if (state == STICKPENDING) { |
| buff.append('\\'); |
| params.add(buff.toString()); |
| buff.setLength(0); |
| state = NULL; |
| } else if (state == INPARAMPENDING) { |
| state = INPARAM; |
| buff.append('\\'); |
| buff.append(c); |
| } else { // INPARAM |
| buff.append(c); |
| } |
| |
| continue; |
| } |
| |
| if (c == '\\') { |
| if (state == NULL) { |
| ++i; |
| |
| if (i < slength) { |
| char cc = args.charAt(i); |
| |
| if ((cc == '"') || (cc == '\\')) { |
| buff.append(cc); |
| } else if (Character.isWhitespace(cc)) { |
| buff.append(c); |
| --i; |
| } else { |
| buff.append(c); |
| buff.append(cc); |
| } |
| } else { |
| buff.append('\\'); |
| |
| break; |
| } |
| |
| continue; |
| } else if (state == INPARAM) { |
| state = INPARAMPENDING; |
| } else if (state == INPARAMPENDING) { |
| buff.append('\\'); |
| state = INPARAM; |
| } else if (state == STICK) { |
| state = STICKPENDING; |
| } else if (state == STICKPENDING) { |
| buff.append('\\'); |
| state = STICK; |
| } |
| |
| continue; |
| } |
| |
| if (c == '"') { |
| if (state == NULL) { |
| state = INPARAM; |
| } else if (state == INPARAM) { |
| state = STICK; |
| } else if (state == STICK) { |
| state = INPARAM; |
| } else if (state == STICKPENDING) { |
| buff.append('"'); |
| state = STICK; |
| } else { // INPARAMPENDING |
| buff.append('"'); |
| state = INPARAM; |
| } |
| |
| continue; |
| } |
| |
| if (state == INPARAMPENDING) { |
| buff.append('\\'); |
| state = INPARAM; |
| } else if (state == STICKPENDING) { |
| buff.append('\\'); |
| state = STICK; |
| } |
| |
| buff.append(c); |
| } |
| |
| // collect |
| if (state == INPARAM) { |
| params.add(buff.toString()); |
| } else if ((state & (INPARAMPENDING | STICKPENDING)) != 0) { |
| buff.append('\\'); |
| params.add(buff.toString()); |
| } else { // NULL or STICK |
| |
| if (buff.length() != 0) { |
| params.add(buff.toString()); |
| } |
| } |
| |
| String[] retArgs = new String[params.size()]; |
| int i = 0; |
| for (String param : params) { |
| retArgs[i++] = param; |
| } |
| return retArgs; |
| } |
| |
| /** Complementary method to parseParameters |
| * @link #parseParameters |
| */ |
| public static String escapeParameters(String[] params) { |
| StringBuffer sb = new StringBuffer(); |
| |
| for (int i = 0; i < params.length; i++) { |
| escapeString(params[i], sb); |
| sb.append(' '); |
| } |
| |
| final int len = sb.length(); |
| |
| if (len > 0) { |
| sb.setLength(len - 1); |
| } |
| |
| return sb.toString().trim(); |
| } |
| |
| /** |
| * Escapes one string and appends it into provided {@link StringBuffer}. |
| * <p/> |
| * @param s String to be escaped. |
| * @param sb Target {@link StringBuffer}. |
| * @link #escapeParameters |
| */ |
| public static void escapeString(String s, StringBuffer sb) { |
| if (s.length() == 0) { |
| sb.append("\"\""); |
| return; |
| } |
| boolean hasSpace = false; |
| final int sz = sb.length(); |
| final int slen = s.length(); |
| char c; |
| for (int i = 0; i < slen; i++) { |
| c = s.charAt(i); |
| if (Character.isWhitespace(c)) { |
| hasSpace = true; |
| sb.append(c); |
| continue; |
| } |
| if (c == '\\') { |
| sb.append('\\').append('\\'); |
| continue; |
| } |
| if (c == '"') { |
| sb.append('\\').append('"'); |
| continue; |
| } |
| sb.append(c); |
| } |
| if (hasSpace) { |
| sb.insert(sz, '"'); |
| sb.append('"'); |
| } |
| } |
| |
| /** |
| * Escapes provided {@link String}. |
| * <p/> |
| * @param s {@link String} to be escaped. |
| * @return Escaped {@link String} value. |
| */ |
| public static String escapeString(String s) { |
| final int sLen = s.length(); |
| int tLen = sLen; |
| boolean quote = sLen == 0; |
| // Count length of target String to avoid StringBuilder resizing |
| for (int i = 0; i < sLen; i++) { |
| char c = s.charAt(i); |
| switch(c) { |
| case '\\': case '"': |
| tLen++; |
| break; |
| default: |
| if (Character.isWhitespace(c)) { |
| quote = true; |
| } |
| } |
| } |
| if (quote) { |
| tLen += 2; |
| } |
| // Build target value. |
| StringBuilder sb = new StringBuilder(tLen); |
| if (quote) { |
| sb.append('\"'); |
| } |
| for (int i = 0; i < sLen; i++) { |
| char c = s.charAt(i); |
| switch(c) { |
| case '\\': case '"': |
| sb.append('\\'); |
| break; |
| } |
| sb.append(c); |
| } |
| if (quote) { |
| sb.append('\"'); |
| } |
| return sb.toString(); |
| } |
| |
| /** |
| * Recursive delete of internal files and directory structure. |
| * <p/> |
| * Target directory is not removed. It's made empty. |
| * Think twice before using it. |
| * <p/> |
| * @param target File or directory which content will be deleted. |
| */ |
| public static boolean rmDirContent(File target) { |
| boolean result = true; |
| if (target != null) { |
| File[] content = target.listFiles(); |
| for (File file : content) { |
| if (file.canWrite()) { |
| if (file.isDirectory() && !".".equals(file.getName()) |
| && !"..".equals(file.getName())) { |
| result = result && rmDirContent(file); |
| } |
| result = result && file.delete(); |
| } else { |
| result = false; |
| } |
| } |
| } |
| return result; |
| } |
| |
| /** |
| * Recursive delete of directory structure. |
| * <p/> |
| * Target directory is also removed. |
| * Think twice before using it. |
| * <p/> |
| * @param target File or directory to be deleted. |
| */ |
| public static boolean rmDir(File target) { |
| boolean result = rmDirContent(target); |
| return result && target.delete(); |
| } |
| |
| /** |
| * Join 2 path elements separating them with path separator if not present |
| * at the end of first path element. |
| * <p/> |
| * @param e1 1st path element. |
| * @param e2 2nd path element. |
| */ |
| @SuppressWarnings("null") |
| public static String joinPaths(final String e1, final String e2) { |
| int l1 = e1 != null ? e1.length() : 0; |
| int l2 = e2 != null ? e2.length() : 0; |
| boolean separator = l1 > 0 && !e1.endsWith(File.separator); |
| StringBuilder sb = new StringBuilder( |
| l1 + l2 + (separator ? FILE_SEPARATOR_LENGTH : 0)); |
| if (l1 > 0) { |
| sb.append(e1); |
| } |
| if (separator) { |
| sb.append(File.separator); |
| } |
| if (l2 > 0) { |
| sb.append(e2); |
| } |
| return sb.toString(); |
| } |
| |
| } |