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comparison dwt/internal/Library.d @ 0:380af2bdd8e5

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author Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
date Sat, 09 Aug 2008 17:00:02 +0200
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children e831403a80a9 f565d3a95c0a
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-1:000000000000 0:380af2bdd8e5
1 /*******************************************************************************
2 * Copyright (c) 2000, 2007 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * IBM Corporation - initial API and implementation
10 *
11 * Port to the D Programming language:
12 * Frank Benoit <benoit@tionex.de>
13 * Jacob Carlborg <jacob.carlborg@gmail.com>
14 *******************************************************************************/
15 module dwt.internal.Library;
16
17 import tango.util.Convert;
18
19 import dwt.dwthelper.utils;
20
21 //do it here, so it can be evaluated at compile time
22 //this saves a static ctor.
23 private int buildSWT_VERSION (int major, int minor)
24 {
25 return major * 1000 + minor;
26 }
27
28 public class Library
29 {
30
31 /* DWT Version - Mmmm (M=major, mmm=minor) */
32
33 /**
34 * DWT Major version number (must be >= 0)
35 */
36 static const int MAJOR_VERSION = 3;
37
38 /**
39 * DWT Minor version number (must be in the range 0..999)
40 */
41 static const int MINOR_VERSION = 440;
42
43 /**
44 * DWT revision number (must be >= 0)
45 */
46 static const int REVISION = 0;
47
48 /**
49 * The JAVA and DWT versions
50 */
51 //public static const int JAVA_VERSION;
52 public static const int SWT_VERSION = .buildSWT_VERSION(MAJOR_VERSION,
53 MINOR_VERSION);
54
55 version (darwin)
56 static const String SEPARATOR = "\n";
57
58 else
59 static assert(false, "Only Mac OS X supported for this port");
60
61 static int parseVersion (String aVersion)
62 {
63 if (aVersion == null)
64 return 0;
65 int major = 0, minor = 0, micro = 0;
66 int length = aVersion.length, index = 0, start = 0;
67 bool isDigit (char c)
68 {
69 return c >= '0' && c <= '9';
70 }
71 while (index < length && isDigit(aVersion[index]))
72 index++;
73 try
74 {
75 if (start < length)
76 major = to!(int)(aVersion[start .. index]);
77 }
78 catch (ConversionException e)
79 {
80 }
81 start = ++index;
82 while (index < length && isDigit(aVersion[index]))
83 index++;
84 try
85 {
86 if (start < length)
87 minor = to!(int)(aVersion[start .. index]);
88 }
89 catch (ConversionException e)
90 {
91 }
92 start = ++index;
93 while (index < length && isDigit(aVersion[index]))
94 index++;
95 try
96 {
97 if (start < length)
98 micro = to!(int)(aVersion[start .. index]);
99 }
100 catch (ConversionException e)
101 {
102 }
103 return buildJAVA_VERSION(major, minor, micro);
104 }
105
106 /**
107 * Returns the Java version number as an integer.
108 *
109 * @param major
110 * @param minor
111 * @param micro
112 * @return the version
113 */
114 public static int buildJAVA_VERSION (int major, int minor, int micro)
115 {
116 return (major << 16) + (minor << 8) + micro;
117 }
118
119 /**
120 * Returns the DWT version number as an integer.
121 *
122 * @param major
123 * @param minor
124 * @return the version
125 */
126 public static int buildSWT_VERSION (int major, int minor)
127 {
128 return .buildSWT_VERSION(major, minor);
129 }
130 /+ PORTING_LEFT
131 static bool extract (String fileName, String mappedName) {
132 FileOutputStream os = null;
133 InputStream is = null;
134 File file = new File(fileName);
135 try {
136 if (!file.exists ()) {
137 is = Library.class.getResourceAsStream ("/" + mappedName); //$NON-NLS-1$
138 if (is !is null) {
139 int read;
140 byte [] buffer = new byte [4096];
141 os = new FileOutputStream (fileName);
142 while ((read = is.read (buffer)) !is -1) {
143 os.write(buffer, 0, read);
144 }
145 os.close ();
146 is.close ();
147 if (!Platform.PLATFORM.equals ("win32")) { //$NON-NLS-1$
148 try {
149 Runtime.getRuntime ().exec (new String []{"chmod", "755", fileName}).waitFor(); //$NON-NLS-1$ //$NON-NLS-2$
150 } catch (Throwable e) {}
151 }
152 if (load (fileName)) return true;
153 }
154 }
155 } catch (Throwable e) {
156 try {
157 if (os !is null) os.close ();
158 } catch (IOException e1) {}
159 try {
160 if (is !is null) is.close ();
161 } catch (IOException e1) {}
162 }
163 if (file.exists ()) file.delete ();
164 return false;
165 }
166
167 static bool load (String libName) {
168 try {
169 if (libName.indexOf (SEPARATOR) !is -1) {
170 System.load (libName);
171 } else {
172 System.loadLibrary (libName);
173 }
174 return true;
175 } catch (UnsatisfiedLinkError e) {}
176 return false;
177 }
178
179 /**
180 * Loads the shared library that matches the version of the
181 * Java code which is currently running. DWT shared libraries
182 * follow an encoding scheme where the major, minor and revision
183 * numbers are embedded in the library name and this along with
184 * <code>name</code> is used to load the library. If this fails,
185 * <code>name</code> is used in another attempt to load the library,
186 * this time ignoring the DWT version encoding scheme.
187 *
188 * @param name the name of the library to load
189 */
190 public static void loadLibrary (String name) {
191 loadLibrary (name, true);
192 }
193
194 /**
195 * Loads the shared library that matches the version of the
196 * Java code which is currently running. DWT shared libraries
197 * follow an encoding scheme where the major, minor and revision
198 * numbers are embedded in the library name and this along with
199 * <code>name</code> is used to load the library. If this fails,
200 * <code>name</code> is used in another attempt to load the library,
201 * this time ignoring the DWT version encoding scheme.
202 *
203 * @param name the name of the library to load
204 * @param mapName true if the name should be mapped, false otherwise
205 */
206 public static void loadLibrary (String name, bool mapName) {
207 String prop = System.getProperty ("sun.arch.data.model"); //$NON-NLS-1$
208 if (prop is null) prop = System.getProperty ("com.ibm.vm.bitmode"); //$NON-NLS-1$
209 if (prop !is null) {
210 if ("32".equals (prop)) { //$NON-NLS-1$
211 if (0x1FFFFFFFFL is (int /*long*/)0x1FFFFFFFFL) {
212 throw new UnsatisfiedLinkError ("Cannot load 64-bit DWT libraries on 32-bit JVM"); //$NON-NLS-1$
213 }
214 }
215 if ("64".equals (prop)) { //$NON-NLS-1$
216 if (0x1FFFFFFFFL !is (int /*long*/)0x1FFFFFFFFL) {
217 throw new UnsatisfiedLinkError ("Cannot load 32-bit DWT libraries on 64-bit JVM"); //$NON-NLS-1$
218 }
219 }
220 }
221
222 /* Compute the library name and mapped name */
223 String libName1, libName2, mappedName1, mappedName2;
224 if (mapName) {
225 String version = System.getProperty ("swt.version"); //$NON-NLS-1$
226 if (version is null) {
227 version = "" + MAJOR_VERSION; //$NON-NLS-1$
228 /* Force 3 digits in minor version number */
229 if (MINOR_VERSION < 10) {
230 version += "00"; //$NON-NLS-1$
231 } else {
232 if (MINOR_VERSION < 100) version += "0"; //$NON-NLS-1$
233 }
234 version += MINOR_VERSION;
235 /* No "r" until first revision */
236 if (REVISION > 0) version += "r" + REVISION; //$NON-NLS-1$
237 }
238 libName1 = name + "-" + Platform.PLATFORM + "-" + version; //$NON-NLS-1$ //$NON-NLS-2$
239 libName2 = name + "-" + Platform.PLATFORM; //$NON-NLS-1$
240 mappedName1 = System.mapLibraryName (libName1);
241 mappedName2 = System.mapLibraryName (libName2);
242 } else {
243 libName1 = libName2 = mappedName1 = mappedName2 = name;
244 }
245
246 /* Try loading library from swt library path */
247 String path = System.getProperty ("swt.library.path"); //$NON-NLS-1$
248 if (path !is null) {
249 path = new File (path).getAbsolutePath ();
250 if (load (path + SEPARATOR + mappedName1)) return;
251 if (mapName && load (path + SEPARATOR + mappedName2)) return;
252 }
253
254 /* Try loading library from java library path */
255 if (load (libName1)) return;
256 if (mapName && load (libName2)) return;
257
258 /* Try loading library from the tmp directory if swt library path is not specified */
259 if (path is null) {
260 path = System.getProperty ("java.io.tmpdir"); //$NON-NLS-1$
261 path = new File (path).getAbsolutePath ();
262 if (load (path + SEPARATOR + mappedName1)) return;
263 if (mapName && load (path + SEPARATOR + mappedName2)) return;
264 }
265
266 /* Try extracting and loading library from jar */
267 if (path !is null) {
268 if (extract (path + SEPARATOR + mappedName1, mappedName1)) return;
269 if (mapName && extract (path + SEPARATOR + mappedName2, mappedName2)) return;
270 }
271
272 /* Failed to find the library */
273 throw new UnsatisfiedLinkError ("no " + libName1 + " or " + libName2 + " in swt.library.path, java.library.path or the jar file"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
274 }
275 +/
276 }