UpdateJarPatcherpublic class UpdateJarPatcher extends Object
| Fields Summary |
|---|
| private static String | MANIFEST_NAME | | protected Map | patch_entries |
| Constructors Summary |
|---|
protected UpdateJarPatcher(InputStream input_file, InputStream patch_file, OutputStream output_file, org.gudy.azureus2.plugins.logging.LoggerChannel log)
readPatchEntries( patch_file );
JarInputStream jis = new JarInputStream(input_file);
JarOutputStream jos = new JarOutputStream(output_file);
boolean manifest_found = false;
while( true ){
JarEntry is_entry = jis.getNextJarEntry();
if ( is_entry == null ){
break;
}
if ( is_entry.isDirectory()){
continue;
}
String name = is_entry.getName();
if ( name.equalsIgnoreCase( MANIFEST_NAME )){
manifest_found = true;
}
InputStream eis = getPatch( name);
if ( eis != null ){
log.log( "patch - replace: " + name );
}else{
eis = jis;
}
JarEntry os_entry = new JarEntry(name);
writeEntry( jos, os_entry, eis );
}
// write any new entries
Iterator it = patch_entries.keySet().iterator();
while( it.hasNext()){
String name = (String)it.next();
if ( name.equalsIgnoreCase( MANIFEST_NAME )){
manifest_found = true;
}
log.log( "patch - add: " + name);
InputStream eis = (InputStream)patch_entries.get(name);
JarEntry os_entry = new JarEntry(name);
writeEntry( jos, os_entry, eis );
}
if ( !manifest_found ){
JarEntry entry = new JarEntry( MANIFEST_NAME );
ByteArrayInputStream bais = new ByteArrayInputStream("Manifest-Version: 1.0\r\n\r\n".getBytes());
writeEntry( jos, entry, bais );
}
jos.finish(); // FLUSH is not sufficient!!!!
|
| Methods Summary |
|---|
| public java.io.InputStream | getPatch(java.lang.String name)
return((InputStream)patch_entries.remove(name));
| | protected void | readPatchEntries(java.io.InputStream is)
JarInputStream jis = new JarInputStream(is );
while( true ){
JarEntry ent = jis.getNextJarEntry();
if ( ent == null ){
break;
}
if ( ent.isDirectory()){
continue;
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer = new byte[8192];
while( true ){
int l = jis.read( buffer );
if ( l <= 0 ){
break;
}
baos.write( buffer, 0, l );
}
patch_entries.put( ent.getName(), new ByteArrayInputStream( baos.toByteArray()));
}
| | private static void | writeEntry(java.util.jar.JarOutputStream jos, java.util.jar.JarEntry entry, java.io.InputStream data)
jos.putNextEntry(entry);
byte[] newBytes = new byte[4096];
int size = data.read(newBytes);
while (size != -1){
jos.write(newBytes, 0, size);
size = data.read(newBytes);
}
|
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