| 1 | package vnsim.gui; |
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| 2 | |
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| 3 | import java.io.File; |
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| 4 | import java.io.FileInputStream; |
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| 5 | import java.io.FileOutputStream; |
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| 6 | import java.io.IOException; |
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| 7 | import java.io.InputStream; |
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| 8 | import java.io.OutputStream; |
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| 9 | import java.lang.reflect.Method; |
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| 10 | import java.net.URL; |
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| 11 | import java.net.URLClassLoader; |
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| 12 | import java.net.URLConnection; |
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| 13 | import java.util.ArrayList; |
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| 14 | import java.util.Enumeration; |
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| 15 | import java.util.List; |
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| 16 | import java.util.Vector; |
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| 17 | import java.util.jar.JarEntry; |
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| 18 | import java.util.jar.JarFile; |
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| 19 | |
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| 20 | import javax.swing.JFileChooser; |
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| 21 | import javax.swing.filechooser.FileSystemView; |
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| 22 | |
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| 23 | import sun.misc.URLClassPath; |
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| 24 | |
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| 25 | import com.sun.javaws.jnl.JARDesc; |
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| 26 | import com.sun.javaws.jnl.LaunchDesc; |
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| 27 | import com.sun.javaws.jnl.ResourcesDesc; |
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| 28 | import com.sun.jnlp.JNLPClassLoader; |
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| 29 | |
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| 30 | |
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| 31 | /** |
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| 32 | * An utility class with several methods that are used throughout the GUI classes |
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| 33 | * @author cipsm |
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| 34 | * |
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| 35 | */ |
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| 36 | public class Utils { |
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| 37 | |
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| 38 | private static final Utils _instance = new Utils(); |
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| 39 | |
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| 40 | public static Utils getInstance() { |
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| 41 | return _instance; |
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| 42 | } |
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| 43 | |
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| 44 | private Utils() { } |
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| 45 | |
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| 46 | public FileSystemView getSystemView(String root) { |
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| 47 | return new ClassSystemView(root); |
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| 48 | } |
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| 49 | |
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| 50 | /** A FileSystemView implementation that is used to display the classes loaded by the GUI used ClassLoader.. */ |
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| 51 | public static class ClassSystemView extends FileSystemView { |
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| 52 | |
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| 53 | private String root; |
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| 54 | private SystemViewHandler handler = null; |
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| 55 | |
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| 56 | public ClassSystemView(String root) { |
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| 57 | this.root = root; |
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| 58 | System.out.println(root); |
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| 59 | // init the context |
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| 60 | try { |
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| 61 | Method m = ClassLoader.class.getDeclaredMethod("getBootstrapClassPath", new Class[0]); |
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| 62 | m.setAccessible(true); |
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| 63 | URLClassPath p = (URLClassPath)m.invoke(getClass().getClassLoader(), new Object[0]); |
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| 64 | URL u[] = p.getURLs(); |
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| 65 | for (int i=0; i<u.length; i++) { |
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| 66 | String path = u[i].toString(); |
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| 67 | if (path.startsWith("file://")) |
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| 68 | path = path.substring(7); |
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| 69 | else if (path.startsWith("file:/")) |
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| 70 | path = path.substring(6); |
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| 71 | if(File.separatorChar == '\\') { |
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| 72 | path = path.replace("/", "\\"); |
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| 73 | } |
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| 74 | path = path.replace("%20", " ").trim(); // for compatibility of space with the FS |
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| 75 | if (path.endsWith(".jar")) { |
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| 76 | // System.out.println(path); |
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| 77 | JarHandler h = new JarHandler(path); |
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| 78 | final File ff[] = h.listResources(root); |
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| 79 | if (ff != null && ff.length != 0) { |
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| 80 | handler = h; |
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| 81 | break; |
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| 82 | } |
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| 83 | } else { |
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| 84 | FileHandler h = new FileHandler(path); |
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| 85 | final File ff[] = h.listResources(root); |
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| 86 | if (ff != null && ff.length != 0) { |
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| 87 | handler = h; |
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| 88 | break; |
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| 89 | } |
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| 90 | } |
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| 91 | } |
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| 92 | if (handler == null) { |
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| 93 | String classpath = System.getProperty("java.class.path"); |
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| 94 | // System.out.println("classpath="+classpath); |
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| 95 | |
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| 96 | if (classpath != null) { |
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| 97 | String pp[] = null; |
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| 98 | if (File.separatorChar == '\\') |
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| 99 | pp = classpath.split(";"); |
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| 100 | else |
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| 101 | pp = classpath.split(":"); |
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| 102 | if (pp != null && pp.length != 0) { |
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| 103 | for (int i=0; i<pp.length; i++) { |
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| 104 | String path = pp[i]; |
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| 105 | if (path.startsWith("file://")) |
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| 106 | path = path.substring(7); |
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| 107 | else if (path.startsWith("file:/")) |
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| 108 | path = path.substring(6); |
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| 109 | path = path.replace("%20", " "); // for compatibility of space with the FS |
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| 110 | if (path.endsWith(".jar")) { |
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| 111 | // System.out.println(path); |
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| 112 | JarHandler h = new JarHandler(path); |
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| 113 | final File ff[] = h.listResources(root); |
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| 114 | if (ff != null && ff.length != 0) { |
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| 115 | handler = h; |
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| 116 | break; |
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| 117 | } |
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| 118 | } else { |
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| 119 | FileHandler h = new FileHandler(path); |
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| 120 | final File ff[] = h.listResources(root); |
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| 121 | if (ff != null && ff.length != 0) { |
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| 122 | handler = h; |
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| 123 | break; |
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| 124 | } |
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| 125 | } |
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| 126 | } |
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| 127 | } |
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| 128 | } |
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| 129 | } |
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| 130 | if (handler == null) { // still ? |
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| 131 | ClassLoader l = getClass().getClassLoader(); |
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| 132 | // System.out.println("am intrat aici "+l); |
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| 133 | if (l instanceof URLClassLoader) { |
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| 134 | URLClassLoader lc = (URLClassLoader)l; |
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| 135 | u = lc.getURLs(); |
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| 136 | // System.out.println(u.length); |
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| 137 | for (int i=0; i<u.length; i++) { |
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| 138 | String path = u[i].toString(); |
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| 139 | // System.out.println(path); |
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| 140 | if (path.startsWith("file://")) |
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| 141 | path = path.substring(7); |
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| 142 | else if (path.startsWith("file:/")) |
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| 143 | path = path.substring(6); |
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| 144 | if(File.separatorChar == '\\') { |
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| 145 | path = path.replace("/", "\\"); |
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| 146 | } |
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| 147 | path = path.replace("%20", " ").trim(); // for compatibility of space with the FS |
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| 148 | if (path.endsWith(".jar")) { |
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| 149 | // System.out.println(path); |
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| 150 | JarHandler h = new JarHandler(path); |
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| 151 | final File ff[] = h.listResources(root); |
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| 152 | if (ff != null && ff.length != 0) { |
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| 153 | handler = h; |
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| 154 | break; |
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| 155 | } |
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| 156 | } else { |
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| 157 | FileHandler h = new FileHandler(path); |
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| 158 | final File ff[] = h.listResources(root); |
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| 159 | if (ff != null && ff.length != 0) { |
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| 160 | handler = h; |
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| 161 | break; |
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| 162 | } |
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| 163 | } |
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| 164 | } |
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| 165 | } else { |
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| 166 | try { |
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| 167 | if (l instanceof JNLPClassLoader) { |
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| 168 | JNLPClassLoader jl = (JNLPClassLoader)l; |
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| 169 | LaunchDesc ld = jl.getLaunchDesc(); |
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| 170 | final List<JARDesc> jarDescs = new ArrayList<JARDesc>(); |
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| 171 | ResourcesDesc rd = ld.getResources(); |
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| 172 | if (rd != null) { |
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| 173 | JARDesc[] jars = rd.getEagerOrAllJarDescs(true); |
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| 174 | for (int i = 0; i < jars.length; i++) |
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| 175 | if (jars[i].isJavaFile() && !jars[i].isNativeLib()) |
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| 176 | jarDescs.add(jars[i]); |
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| 177 | } |
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| 178 | for (JARDesc jd : jarDescs) { |
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| 179 | URL location = jd.getLocation(); |
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| 180 | if (!location.getFile().endsWith("maps.jar")) continue; |
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| 181 | // download it ? |
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| 182 | File dirToDownload = new File(System.getProperty("user.home")+File.separatorChar+"maps"); |
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| 183 | if (!dirToDownload.exists()) { |
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| 184 | dirToDownload.mkdirs(); |
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| 185 | } |
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| 186 | String path = System.getProperty("user.home")+File.separatorChar+"maps"+File.separatorChar+"maps.jar"; |
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| 187 | File tmp = new File(path); |
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| 188 | InputStream isDown; |
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| 189 | URLConnection connection = location.openConnection(); |
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| 190 | //write from web to local file |
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| 191 | FileOutputStream fOS = new FileOutputStream(tmp); |
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| 192 | isDown = connection.getInputStream(); |
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| 193 | int nBufferSize = 1024; |
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| 194 | byte buff[] = new byte[nBufferSize]; |
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| 195 | int nRead = -1; |
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| 196 | do { |
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| 197 | nRead = isDown.read(buff); |
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| 198 | if ( nRead > 0 ) { |
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| 199 | fOS.write(buff, 0, nRead); |
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| 200 | } |
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| 201 | } while ( nRead > 0 ); |
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| 202 | fOS.flush(); |
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| 203 | fOS.close(); |
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| 204 | isDown.close(); |
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| 205 | // System.out.println(path); |
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| 206 | JarHandler h = new JarHandler(path); |
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| 207 | final File ff[] = h.listResources(root); |
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| 208 | if (ff != null && ff.length != 0) { |
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| 209 | handler = h; |
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| 210 | break; |
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| 211 | } |
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| 212 | } |
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| 213 | } |
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| 214 | } catch (Throwable t1) { |
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| 215 | // can happen due to different versions of JavaWS |
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| 216 | } |
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| 217 | if (handler == null) { |
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| 218 | FileHandler h = new FileHandler("."); |
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| 219 | if (h.listResources(root) != null) |
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| 220 | handler = h; |
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| 221 | } |
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| 222 | } |
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| 223 | } |
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| 224 | if (handler == null) { |
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| 225 | FileHandler h = new FileHandler("."); |
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| 226 | if (h.listResources(root) != null) |
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| 227 | handler = h; |
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| 228 | } |
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| 229 | } catch (Throwable t) { |
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| 230 | t.printStackTrace(); |
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| 231 | } |
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| 232 | } |
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| 233 | |
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| 234 | public File[] getRoots() { |
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| 235 | if (handler == null) |
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| 236 | return null; |
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| 237 | return new File[] { new CustomFile(root, true) }; |
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| 238 | } |
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| 239 | |
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| 240 | public boolean isRoot(File f) { |
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| 241 | if (f == null) return false; |
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| 242 | return f.getName().equals(root); |
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| 243 | } |
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| 244 | |
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| 245 | public File[] getFiles(File dir, boolean useFileHiding) { |
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| 246 | // System.out.println(dir.getName()+" "+(dir instanceof CustomFile)); |
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| 247 | if (handler != null) { |
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| 248 | return handler.listResources(dir.getName()); |
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| 249 | } |
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| 250 | return null; |
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| 251 | } |
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| 252 | |
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| 253 | public String[] list() { |
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| 254 | if (handler != null) { |
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| 255 | File f[] = handler.listResources(root); |
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| 256 | if (f == null || f.length == 0) { |
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| 257 | return null; |
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| 258 | } |
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| 259 | String[] s = new String[f.length]; |
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| 260 | for (int i=0; i<s.length; i++) s[i] = f[i].getName(); |
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| 261 | return s; |
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| 262 | } |
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| 263 | return null; |
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| 264 | } |
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| 265 | |
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| 266 | public File getHomeDirectory() { |
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| 267 | if (handler == null) return null; |
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| 268 | return new CustomFile(root, true); |
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| 269 | } |
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| 270 | |
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| 271 | public File getDefaultDirectory() { |
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| 272 | if (handler == null) return super.getDefaultDirectory(); |
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| 273 | return new CustomFile(root, true); |
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| 274 | } |
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| 275 | |
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| 276 | /** Never used in this case */ |
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| 277 | public File createNewFolder(File containingDir) throws IOException { |
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| 278 | return null; |
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| 279 | } |
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| 280 | |
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| 281 | } |
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| 282 | |
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| 283 | static class CustomFile extends File { |
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| 284 | private String fileName; |
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| 285 | private boolean isDir; |
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| 286 | public CustomFile(String fileName, boolean isDir) { |
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| 287 | super(fileName); |
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| 288 | this.fileName = fileName; |
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| 289 | this.isDir = isDir; |
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| 290 | } |
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| 291 | |
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| 292 | public boolean isDirectory() { |
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| 293 | return isDir; |
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| 294 | } |
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| 295 | |
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| 296 | public String getName() { |
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| 297 | // try { |
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| 298 | // throw new Exception(); |
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| 299 | // } catch (Exception e) { |
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| 300 | // e.printStackTrace(); |
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| 301 | // } |
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| 302 | return fileName; |
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| 303 | } |
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| 304 | |
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| 305 | public String getParent() { |
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| 306 | // System.out.println(super.getParent()); |
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| 307 | return ""; |
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| 308 | } |
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| 309 | } |
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| 310 | |
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| 311 | /** generic interface used to declare the common methods for handling a dir or jar file */ |
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| 312 | interface SystemViewHandler { |
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| 313 | public File[] listResources(String resource); |
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| 314 | } |
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| 315 | |
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| 316 | /** Utility class used to handle the searching of particular resources inside a jar file */ |
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| 317 | static class JarHandler implements SystemViewHandler { |
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| 318 | private String jarName; |
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| 319 | public JarHandler(String jarName) { |
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| 320 | this.jarName = jarName; |
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| 321 | } |
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| 322 | public File[] listResources(String resource) { |
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| 323 | if (resource == null) return null; |
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| 324 | File f = new File(jarName); |
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| 325 | try { |
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| 326 | if (f.isFile() && f.getName().endsWith(".jar")){ |
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| 327 | final JarFile jf = new JarFile(f); |
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| 328 | // System.out.println(f); |
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| 329 | final Enumeration<JarEntry> e = jf.entries(); |
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| 330 | JarEntry je; |
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| 331 | Vector<File> v = new Vector<File>(); |
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| 332 | while (e.hasMoreElements()){ |
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| 333 | je = e.nextElement(); |
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| 334 | String name = je.getName(); |
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| 335 | if (!name.startsWith("/")) name = "/"+name; |
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| 336 | // System.out.println(name + " " + resource); |
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| 337 | if (name.startsWith(resource) && name.length() > resource.length()) { |
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| 338 | String end = name.substring(resource.length()); |
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| 339 | if (end.length() > 0 && end.startsWith("/")) end = end.substring(1); |
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| 340 | if (end.contains("/") || end.length() < 1) continue; // uninteresting result |
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| 341 | v.add(new CustomFile(end, je.isDirectory())); |
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| 342 | } else continue; |
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| 343 | } |
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| 344 | if (v.size() == 0) return null; |
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| 345 | CustomFile ff[] = new CustomFile[v.size()]; |
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| 346 | ff = v.toArray(ff); |
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| 347 | return ff; |
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| 348 | } |
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| 349 | } catch (Throwable t) { |
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| 350 | t.printStackTrace(); |
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| 351 | return null; |
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| 352 | } |
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| 353 | return null; |
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| 354 | } |
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| 355 | } |
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| 356 | |
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| 357 | static class FileHandler implements SystemViewHandler { |
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| 358 | private String rootDir; |
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| 359 | public FileHandler(String dirName) { |
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| 360 | this.rootDir = dirName; |
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| 361 | } |
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| 362 | public File[] listResources(String resource) { |
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| 363 | if(File.separatorChar == '\\') { |
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| 364 | resource = resource.replace("/", "\\").trim(); |
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| 365 | } |
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| 366 | File dir = new File(rootDir+File.separatorChar+resource); |
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| 367 | if (dir.exists() && dir.isDirectory()) { |
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| 368 | File f[] = dir.listFiles(); |
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| 369 | if (f == null || f.length == 0) { |
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| 370 | return f; |
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| 371 | } |
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| 372 | CustomFile cf[] = new CustomFile[f.length]; |
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| 373 | for (int i=0; i<f.length; i++) |
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| 374 | cf[i] = new CustomFile(f[i].getName(), f[i].isDirectory()); |
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| 375 | return cf; |
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| 376 | } |
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| 377 | else { |
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| 378 | System.out.println("Dir "+rootDir+File.separatorChar+resource+" does not exist"); |
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| 379 | } |
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| 380 | return new File[0]; |
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| 381 | } |
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| 382 | } |
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| 383 | |
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| 384 | // method used to get the lock on a inputstream of a an internal file representation... |
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| 385 | public InputStream openStream(String name) throws Exception { |
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| 386 | // System.out.println(name); |
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| 387 | URL u = getClass().getClassLoader().getResource(name); |
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| 388 | |
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| 389 | try { |
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| 390 | return u.openConnection().getInputStream(); |
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| 391 | } catch (Throwable t1) { |
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| 392 | |
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| 393 | try { |
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| 394 | if(File.separatorChar == '\\') { |
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| 395 | name = name.replace("/", "\\").trim(); |
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| 396 | } |
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| 397 | return new FileInputStream(System.getProperty("user.dir") + name); |
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| 398 | }catch (Throwable t2) { |
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| 399 | |
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| 400 | try { |
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| 401 | if(File.separatorChar == '\\') { |
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| 402 | name = name.replace("/", "\\").trim(); |
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| 403 | } |
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| 404 | |
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| 405 | return new FileInputStream(System.getProperty("user.home") + name); |
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| 406 | } catch(Throwable t3) { |
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| 407 | |
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| 408 | File f = new File(name); |
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| 409 | if (!f.exists() || f.isDirectory()) return null; |
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| 410 | return new FileInputStream(name); |
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| 411 | } |
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| 412 | |
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| 413 | } |
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| 414 | } |
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| 415 | |
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| 416 | } |
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| 417 | |
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| 418 | public OutputStream openWriteStream(String name) throws Exception { |
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| 419 | if (name.startsWith("/")) name = name.substring(1); |
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| 420 | URL u = getClass().getClassLoader().getResource(name); |
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| 421 | try { |
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| 422 | return u.openConnection().getOutputStream(); |
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| 423 | } catch (Throwable t) { |
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| 424 | try { |
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| 425 | if(File.separatorChar == '\\') { |
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| 426 | name = name.replace("/", "\\").trim(); |
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| 427 | } |
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| 428 | return new FileOutputStream(System.getProperty("user.dir") + File.separatorChar + name); |
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| 429 | } catch (Throwable t2) { |
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| 430 | return new FileOutputStream(name); |
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| 431 | } |
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| 432 | } |
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| 433 | } |
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| 434 | |
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| 435 | public static void main(String args[]) { |
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| 436 | FileSystemView v = Utils.getInstance().getSystemView("/maps/variations"); |
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| 437 | File f[] = v.getFiles(v.getRoots()[0], false); |
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| 438 | JFileChooser fc=new JFileChooser("/maps/variations", v); |
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| 439 | fc.setDialogTitle("Choose the file specifying the flow variations"); |
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| 440 | int retVal=fc.showOpenDialog(null); |
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| 441 | System.out.println(fc.getSelectedFile().getAbsolutePath()); |
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| 442 | } |
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| 443 | |
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| 444 | } // end of class Utils |
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| 445 | |
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