1 /* 2 * Utilities.java 3 * 4 * Copyright (C) 2003-2007 Peter Graves 5 * $Id$ 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 2 10 * of the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 20 * 21 * As a special exception, the copyright holders of this library give you 22 * permission to link this library with independent modules to produce an 23 * executable, regardless of the license terms of these independent 24 * modules, and to copy and distribute the resulting executable under 25 * terms of your choice, provided that you also meet, for each linked 26 * independent module, the terms and conditions of the license of that 27 * module. An independent module is a module which is not derived from 28 * or based on this library. If you modify this library, you may extend 29 * this exception to your version of the library, but you are not 30 * obligated to do so. If you do not wish to do so, delete this 31 * exception statement from your version. 32 */ 33 34 package org.armedbear.lisp; 35 36 import static org.armedbear.lisp.Lisp.*; 37 38 import java.io.ByteArrayInputStream; 39 import java.io.ByteArrayOutputStream; 40 import java.io.File; 41 import java.io.IOException; 42 import java.io.InputStream; 43 import java.net.URI; 44 import java.net.URISyntaxException; 45 import java.util.jar.JarFile; 46 import java.util.zip.ZipEntry; 47 import java.util.zip.ZipFile; 48 import java.util.zip.ZipInputStream; 49 50 public final class Utilities 51 { 52 public static final boolean isPlatformUnix; 53 public static final boolean isPlatformWindows; 54 55 static { 56 String osName = System.getProperty("os.name"); 57 isPlatformUnix = osName.startsWith("Linux") || 58 osName.startsWith("Mac OS X") || osName.startsWith("Darwin") || 59 osName.startsWith("Solaris") || 60 osName.startsWith("SunOS") || osName.startsWith("AIX") || 61 osName.startsWith("FreeBSD") || osName.startsWith("OpenBSD") || 62 osName.startsWith("NetBSD"); 63 isPlatformWindows = osName.startsWith("Windows"); 64 } 65 isFilenameAbsolute(String filename)66 public static boolean isFilenameAbsolute(String filename) 67 { 68 final int length = filename.length(); 69 if (length > 0) { 70 char c0 = filename.charAt(0); 71 if (c0 == '\\' || c0 == '/') 72 return true; 73 if (length > 2) { 74 if (isPlatformWindows) { 75 // Check for drive letter. 76 char c1 = filename.charAt(1); 77 if (c1 == ':') { 78 if (c0 >= 'a' && c0 <= 'z') 79 return true; 80 if (c0 >= 'A' && c0 <= 'Z') 81 return true; 82 } 83 } else { 84 // Unix. 85 if (filename.equals("~") || filename.startsWith("~/")) 86 return true; 87 } 88 } 89 } 90 return false; 91 } 92 93 escapeFormat(String s)94 static String escapeFormat(String s) { 95 return s.replace("~", "~~"); 96 } 97 } 98