1 | /* |
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2 | * Utilities.java |
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3 | * |
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4 | * Copyright (C) 2003-2007 Peter Graves |
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5 | * $Id: Utilities.java 15395 2020-10-10 21:43:28Z mevenson $ |
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6 | * |
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7 | * This program is free software; you can redistribute it and/or |
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8 | * modify it under the terms of the GNU General Public License |
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9 | * as published by the Free Software Foundation; either version 2 |
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10 | * of the License, or (at your option) any later version. |
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11 | * |
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12 | * This program is distributed in the hope that it will be useful, |
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 | * GNU General Public License for more details. |
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16 | * |
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17 | * You should have received a copy of the GNU General Public License |
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18 | * along with this program; if not, write to the Free Software |
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19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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20 | * |
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21 | * As a special exception, the copyright holders of this library give you |
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22 | * permission to link this library with independent modules to produce an |
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23 | * executable, regardless of the license terms of these independent |
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24 | * modules, and to copy and distribute the resulting executable under |
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25 | * terms of your choice, provided that you also meet, for each linked |
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26 | * independent module, the terms and conditions of the license of that |
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27 | * module. An independent module is a module which is not derived from |
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28 | * or based on this library. If you modify this library, you may extend |
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29 | * this exception to your version of the library, but you are not |
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30 | * obligated to do so. If you do not wish to do so, delete this |
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31 | * exception statement from your version. |
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32 | */ |
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33 | |
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34 | package org.armedbear.lisp; |
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35 | |
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36 | import static org.armedbear.lisp.Lisp.*; |
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37 | |
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38 | import java.io.ByteArrayInputStream; |
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39 | import java.io.ByteArrayOutputStream; |
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40 | import java.io.File; |
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41 | import java.io.IOException; |
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42 | import java.io.InputStream; |
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43 | import java.net.URI; |
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44 | import java.net.URISyntaxException; |
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45 | import java.util.jar.JarFile; |
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46 | import java.util.zip.ZipEntry; |
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47 | import java.util.zip.ZipFile; |
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48 | import java.util.zip.ZipInputStream; |
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49 | |
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50 | public final class Utilities |
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51 | { |
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52 | public static final boolean isPlatformUnix; |
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53 | public static final boolean isPlatformWindows; |
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54 | |
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55 | static { |
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56 | String osName = System.getProperty("os.name"); |
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57 | isPlatformUnix = osName.startsWith("Linux") || |
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58 | osName.startsWith("Mac OS X") || osName.startsWith("Darwin") || |
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59 | osName.startsWith("Solaris") || |
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60 | osName.startsWith("SunOS") || osName.startsWith("AIX") || |
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61 | osName.startsWith("FreeBSD") || osName.startsWith("OpenBSD") || |
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62 | osName.startsWith("NetBSD"); |
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63 | isPlatformWindows = osName.startsWith("Windows"); |
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64 | } |
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65 | |
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66 | public static boolean isFilenameAbsolute(String filename) |
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67 | { |
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68 | final int length = filename.length(); |
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69 | if (length > 0) { |
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70 | char c0 = filename.charAt(0); |
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71 | if (c0 == '\\' || c0 == '/') |
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72 | return true; |
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73 | if (length > 2) { |
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74 | if (isPlatformWindows) { |
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75 | // Check for drive letter. |
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76 | char c1 = filename.charAt(1); |
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77 | if (c1 == ':') { |
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78 | if (c0 >= 'a' && c0 <= 'z') |
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79 | return true; |
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80 | if (c0 >= 'A' && c0 <= 'Z') |
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81 | return true; |
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82 | } |
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83 | } else { |
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84 | // Unix. |
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85 | if (filename.equals("~") || filename.startsWith("~/")) |
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86 | return true; |
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87 | } |
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88 | } |
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89 | } |
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90 | return false; |
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91 | } |
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92 | |
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93 | |
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94 | static String escapeFormat(String s) { |
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95 | return s.replace("~", "~~"); |
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96 | } |
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97 | } |
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