diff options
Diffstat (limited to 'gl4java/utils/Tool.java')
| -rw-r--r-- | gl4java/utils/Tool.java | 286 |
1 files changed, 284 insertions, 2 deletions
diff --git a/gl4java/utils/Tool.java b/gl4java/utils/Tool.java index e4ef7dc..e0f6a83 100644 --- a/gl4java/utils/Tool.java +++ b/gl4java/utils/Tool.java @@ -12,14 +12,18 @@ import java.net.*; import java.io.*; import java.awt.*; import java.applet.*; +import java.lang.reflect.*; +import java.security.*; public class Tool { + public static final boolean DEBUG = false; + /** * A few Component methods for Java-VM access */ - public static String getVersion() + public static final String getVersion() { String version = null; @@ -35,6 +39,47 @@ public class Tool { return version; } + public static final int getVersionMajor() + { + String jvmVersion = getVersion(); + int jvmVersionMajor = 0; + int i0 = 0; + int i1 = jvmVersion.indexOf(".", i0); + String strhlp = null; + if(i1>0) + { + strhlp = jvmVersion.substring(i0,i1); + try { + jvmVersionMajor = Integer.valueOf(strhlp).intValue(); + } catch (Exception e) + {System.out.println("Not a number: "+strhlp+" ("+jvmVersion+")");} + } + return jvmVersionMajor; + } + + public static final int getVersionMinor() + { + String jvmVersion = getVersion(); + int jvmVersionMinor = 0; + int i0 = 0; + int i1 = jvmVersion.indexOf(".", i0); + String strhlp = null; + i0 = i1+1; + i1 = jvmVersion.indexOf(".", i0); + if( i1 < 0 ) + i1 = jvmVersion.length(); // no 2nd dot, no bug version number + + if( 0<i0 && i0<i1 ) + { + strhlp = jvmVersion.substring(i0,i1); + try { + jvmVersionMinor = Integer.valueOf(strhlp).intValue(); + } catch (Exception e) + {System.out.println("Not a number: "+strhlp+" ("+jvmVersion+")");} + } + return jvmVersionMinor; + } + public static String getVendor() { String vendor = null; @@ -152,7 +197,244 @@ public class Tool { return false; } -} + +/***************************************************************************/ +/***************************************************************************/ +/***************************************************************************/ + public static final native long tmpfileCreate(); + public static final native boolean tmpfileClose(long filed); + public static final native int tmpfileWrite(long filed, byte[] data, int bytes); + public static final native int tmpfileRead(long filed, byte[] data, int bytes); + public static final native void tmpfileRewind(long filed); + + public static final long copyResource2TempFile + (Object resourceOrigin, URL urlOrigin, String uri) + { + URL url = null; + InputStream in = null; + File destFile = null; + String fname; + boolean isNetscapeJvm = isNetscapesVM(); + int jvmVersionMajor = getVersionMajor(); + int jvmVersionMinor = getVersionMinor(); + + long filed = tmpfileCreate(); + if(filed==0) + { + System.err.println("GL4Java-Tool: can not open temporary file"); + return 0; + } + + if(isNetscapeJvm) + { + System.out.println("Netscape JVM try to get Privileges"); + try { + Class privmgr = + Class.forName("netscape.security.PrivilegeManager"); + Class[] parameterTypes = new Class[1]; + parameterTypes[0] = Class.forName("java.lang.String"); + Method m = privmgr.getMethod("enablePrivilege",parameterTypes); + Object args[] = new Object[1]; + args[0] = (Object)(new String("UniversalPropertyRead")); + m.invoke(privmgr,args); + args[0] = (Object)(new String("UniversalConnect")); + m.invoke(privmgr,args); + args[0] = (Object)(new String("UniversalFdRead")); + m.invoke(privmgr,args); + System.out.println("Netscape-Privilege: enabled UniversalPropertyRead, UniversalConnect, UniversalFdRead priv."); + } catch (Exception ex) + { + System.out.println("Not enabled Netscape-Privilege: UniversalPropertyRead, UniversalConnect, UniversalFdRead priv."); + } + } + + if( jvmVersionMajor>=2 || + (jvmVersionMajor==1 && jvmVersionMinor>=2) + ) + { + final String f_uri = uri; + final Object f_resourceOrigin = resourceOrigin; + + in = (InputStream) + AccessController.doPrivileged(new PrivilegedAction() { + public Object run() + { + String fname = null; + InputStream in = null; + + if(f_resourceOrigin!=null) + { + fname = "fonts/"+f_uri; + try + { + in = f_resourceOrigin.getClass().getResourceAsStream(fname); + if(in!=null && DEBUG) + System.out.println("<found by resource>: "+f_uri); + } + catch (Exception ex) { + in = null; + if(DEBUG) + { + ex.printStackTrace(); + } + } + } + + if(in==null) + { + fname = "gl4java/utils/glf/fonts/"+f_uri; + try + { + in = ClassLoader.getSystemResourceAsStream(fname); + if(in!=null && DEBUG) + System.out.println("<found by sys resource>: "+f_uri); + } + catch (Exception ex) { + in = null; + if(DEBUG) + { + ex.printStackTrace(); + } + } + } + return in; + } + }); + } else { + if(resourceOrigin!=null) + { + fname = "fonts/"+uri; + try + { + in = resourceOrigin.getClass().getResourceAsStream(fname); + if(in!=null && DEBUG) + System.out.println("<found by resource>: "+uri); + } + catch (Exception ex) { + url = null; + in = null; + if(DEBUG) + { + ex.printStackTrace(); + } + } + } + + if(in==null) + { + fname = "gl4java/utils/glf/fonts/"+uri; + try + { + in = ClassLoader.getSystemResourceAsStream(fname); + if(in!=null && DEBUG) + System.out.println("<found by sys resource>: "+uri); + } + catch (Exception ex) { + url = null; + in = null; + if(DEBUG) + { + ex.printStackTrace(); + } + } + } + } + + if(in==null) + { + try + { + if(urlOrigin!=null) + url = new URL(urlOrigin, uri); + else + url = new URL(uri); + if(url!=null && DEBUG) + System.out.println("<found by URL>: "+url); + if(url!=null) + in = url.openStream(); + } + catch (Exception e) { + url = null; + if(DEBUG) + { + e.printStackTrace(); + } + } + } + boolean ok = true; + int bytesreadtotal=0, byteswrittentotal=0; + + if( in != null ) + { + // Copy the data from the source to the destination. + try + { + byte[] buf = new byte[4096]; + int bytesread, tmp; + + while (ok && (bytesread = in.read(buf,0,buf.length)) >= 0) + { + if (bytesread < 1) continue; + bytesreadtotal+=bytesread; + // Write the data to the destination file. + if ( (tmp=tmpfileWrite(filed, buf, bytesread)) + != bytesread ) + ok = false; + + byteswrittentotal+=tmp; + } + } + catch (Exception e0) + { ok = false; // Should never happen! + if(DEBUG) e0.printStackTrace(); + } + + if(ok) { + tmpfileRewind(filed); + } else { + tmpfileClose(filed); + filed=0; + System.err.println("GL4Java-Tool: write temp file error ("+bytesreadtotal+"r / "+byteswrittentotal+" w)"); + } + if(DEBUG) + { + System.out.println("bytes read: "+bytesreadtotal+ + ", bytes written: "+ + byteswrittentotal); + } + } else ok = false; + + try { + if (in != null) in.close(); + } catch (Exception e) { + in = null; + if(DEBUG) e.printStackTrace(); + } + + if(in==null) + { + System.err.println("GL4Java-Tool: could not find uri: "+uri); + } + + if (in==null && DEBUG) + { + String errMsg = "ERROR: could not get resource "+uri; + System.out.println(errMsg); + if(DEBUG) + { + System.out.println("given parameters:\n"+ + " ResObj:"+resourceOrigin+"\n"+ + " urlOrigin:"+urlOrigin+"\n"+ + " uri:"+uri+"\n"); + Exception e = new Exception(); + e.printStackTrace(); + } + } + + return filed; + } + +} |