Mercurial Hosting > luan
diff src/org/eclipse/jetty/util/IO.java @ 862:2bb375e94f64
simplify jetty.util.IO
author | Franklin Schmidt <fschmidt@gmail.com> |
---|---|
date | Sun, 02 Oct 2016 05:17:11 -0600 |
parents | 8e9db0bbf4f9 |
children |
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--- a/src/org/eclipse/jetty/util/IO.java Wed Sep 28 13:50:22 2016 -0600 +++ b/src/org/eclipse/jetty/util/IO.java Sun Oct 02 05:17:11 2016 -0600 @@ -33,7 +33,6 @@ import org.slf4j.Logger; import org.slf4j.LoggerFactory; -import org.eclipse.jetty.util.thread.QueuedThreadPool; /* ======================================================================== */ /** IO Utilities. @@ -42,515 +41,273 @@ */ public class IO { - private static final Logger LOG = LoggerFactory.getLogger(IO.class); - - /* ------------------------------------------------------------------- */ - public final static String - CRLF = "\015\012"; - - /* ------------------------------------------------------------------- */ - public final static byte[] - CRLF_BYTES = {(byte)'\015',(byte)'\012'}; - - /* ------------------------------------------------------------------- */ - public static int bufferSize = 64*1024; - - /* ------------------------------------------------------------------- */ - // TODO get rid of this singleton! - private static class Singleton { - static final QueuedThreadPool __pool=new QueuedThreadPool(); - static - { - try{__pool.start();} - catch(Exception e){LOG.warn("",e); System.exit(1);} - } - } - - /* ------------------------------------------------------------------- */ - static class Job implements Runnable - { - InputStream in; - OutputStream out; - Reader read; - Writer write; + private static final Logger LOG = LoggerFactory.getLogger(IO.class); + + /* ------------------------------------------------------------------- */ + private static int bufferSize = 64*1024; + + /* ------------------------------------------------------------------- */ + /** Copy Stream in to Stream out until EOF or exception. + */ + public static void copy(InputStream in, OutputStream out) + throws IOException + { + copy(in,out,-1); + } + + /* ------------------------------------------------------------------- */ + /** Copy Reader to Writer out until EOF or exception. + */ + public static void copy(Reader in, Writer out) + throws IOException + { + copy(in,out,-1); + } + + /* ------------------------------------------------------------------- */ + /** Copy Stream in to Stream for byteCount bytes or until EOF or exception. + */ + public static void copy(InputStream in, + OutputStream out, + long byteCount) + throws IOException + { + byte buffer[] = new byte[bufferSize]; + int len=bufferSize; + + if (byteCount>=0) + { + while (byteCount>0) + { + int max = byteCount<bufferSize?(int)byteCount:bufferSize; + len=in.read(buffer,0,max); + + if (len==-1) + break; + + byteCount -= len; + out.write(buffer,0,len); + } + } + else + { + while (true) + { + len=in.read(buffer,0,bufferSize); + if (len<0 ) + break; + out.write(buffer,0,len); + } + } + } + + /* ------------------------------------------------------------------- */ + /** Copy Reader to Writer for byteCount bytes or until EOF or exception. + */ + public static void copy(Reader in, + Writer out, + long byteCount) + throws IOException + { + char buffer[] = new char[bufferSize]; + int len=bufferSize; + + if (byteCount>=0) + { + while (byteCount>0) + { + if (byteCount<bufferSize) + len=in.read(buffer,0,(int)byteCount); + else + len=in.read(buffer,0,bufferSize); + + if (len==-1) + break; + + byteCount -= len; + out.write(buffer,0,len); + } + } + else if (out instanceof PrintWriter) + { + PrintWriter pout=(PrintWriter)out; + while (!pout.checkError()) + { + len=in.read(buffer,0,bufferSize); + if (len==-1) + break; + out.write(buffer,0,len); + } + } + else + { + while (true) + { + len=in.read(buffer,0,bufferSize); + if (len==-1) + break; + out.write(buffer,0,len); + } + } + } - Job(InputStream in,OutputStream out) - { - this.in=in; - this.out=out; - this.read=null; - this.write=null; - } - Job(Reader read,Writer write) - { - this.in=null; - this.out=null; - this.read=read; - this.write=write; - } - - /* ------------------------------------------------------------ */ - /* - * @see java.lang.Runnable#run() - */ - public void run() - { - try { - if (in!=null) - copy(in,out,-1); - else - copy(read,write,-1); - } - catch(IOException e) - { - LOG.trace("",e); - try{ - if (out!=null) - out.close(); - if (write!=null) - write.close(); - } - catch(IOException e2) - { - LOG.trace("",e2); - } - } - } - } - - /* ------------------------------------------------------------------- */ - /** Copy Stream in to Stream out until EOF or exception. - * in own thread - */ - public static void copyThread(InputStream in, OutputStream out) - { - try{ - Job job=new Job(in,out); - if (!Singleton.__pool.dispatch(job)) - job.run(); - } - catch(Exception e) - { - LOG.warn("",e); - } - } - - /* ------------------------------------------------------------------- */ - /** Copy Stream in to Stream out until EOF or exception. - */ - public static void copy(InputStream in, OutputStream out) - throws IOException - { - copy(in,out,-1); - } - - /* ------------------------------------------------------------------- */ - /** Copy Stream in to Stream out until EOF or exception - * in own thread - */ - public static void copyThread(Reader in, Writer out) - { - try - { - Job job=new Job(in,out); - if (!Singleton.__pool.dispatch(job)) - job.run(); - } - catch(Exception e) - { - LOG.warn("",e); - } - } - - /* ------------------------------------------------------------------- */ - /** Copy Reader to Writer out until EOF or exception. - */ - public static void copy(Reader in, Writer out) - throws IOException - { - copy(in,out,-1); - } - - /* ------------------------------------------------------------------- */ - /** Copy Stream in to Stream for byteCount bytes or until EOF or exception. - */ - public static void copy(InputStream in, - OutputStream out, - long byteCount) - throws IOException - { - byte buffer[] = new byte[bufferSize]; - int len=bufferSize; - - if (byteCount>=0) - { - while (byteCount>0) - { - int max = byteCount<bufferSize?(int)byteCount:bufferSize; - len=in.read(buffer,0,max); - - if (len==-1) - break; - - byteCount -= len; - out.write(buffer,0,len); - } - } - else - { - while (true) - { - len=in.read(buffer,0,bufferSize); - if (len<0 ) - break; - out.write(buffer,0,len); - } - } - } - - /* ------------------------------------------------------------------- */ - /** Copy Reader to Writer for byteCount bytes or until EOF or exception. - */ - public static void copy(Reader in, - Writer out, - long byteCount) - throws IOException - { - char buffer[] = new char[bufferSize]; - int len=bufferSize; - - if (byteCount>=0) - { - while (byteCount>0) - { - if (byteCount<bufferSize) - len=in.read(buffer,0,(int)byteCount); - else - len=in.read(buffer,0,bufferSize); - - if (len==-1) - break; - - byteCount -= len; - out.write(buffer,0,len); - } - } - else if (out instanceof PrintWriter) - { - PrintWriter pout=(PrintWriter)out; - while (!pout.checkError()) - { - len=in.read(buffer,0,bufferSize); - if (len==-1) - break; - out.write(buffer,0,len); - } - } - else - { - while (true) - { - len=in.read(buffer,0,bufferSize); - if (len==-1) - break; - out.write(buffer,0,len); - } - } - } - - /* ------------------------------------------------------------ */ - /** Copy files or directories - * @param from - * @param to - * @throws IOException - */ - public static void copy(File from,File to) throws IOException - { - if (from.isDirectory()) - copyDir(from,to); - else - copyFile(from,to); - } + /* ------------------------------------------------------------ */ + /** Copy files or directories + * @param from + * @param to + * @throws IOException + */ + public static void copy(File from,File to) throws IOException + { + if (from.isDirectory()) + copyDir(from,to); + else + copyFile(from,to); + } - /* ------------------------------------------------------------ */ - public static void copyDir(File from,File to) throws IOException - { - if (to.exists()) - { - if (!to.isDirectory()) - throw new IllegalArgumentException(to.toString()); - } - else - to.mkdirs(); - - File[] files = from.listFiles(); - if (files!=null) - { - for (int i=0;i<files.length;i++) - { - String name = files[i].getName(); - if (".".equals(name) || "..".equals(name)) - continue; - copy(files[i],new File(to,name)); - } - } - } - - /* ------------------------------------------------------------ */ - public static void copyFile(File from,File to) throws IOException - { - FileInputStream in=new FileInputStream(from); - FileOutputStream out=new FileOutputStream(to); - copy(in,out); - in.close(); - out.close(); - } - - /* ------------------------------------------------------------ */ - /** Read input stream to string. - */ - public static String toString(InputStream in) - throws IOException - { - return toString(in,null); - } - - /* ------------------------------------------------------------ */ - /** Read input stream to string. - */ - public static String toString(InputStream in,String encoding) - throws IOException - { - StringWriter writer=new StringWriter(); - InputStreamReader reader = encoding==null?new InputStreamReader(in):new InputStreamReader(in,encoding); - - copy(reader,writer); - return writer.toString(); - } - - /* ------------------------------------------------------------ */ - /** Read input stream to string. - */ - public static String toString(Reader in) - throws IOException - { - StringWriter writer=new StringWriter(); - copy(in,writer); - return writer.toString(); - } - + /* ------------------------------------------------------------ */ + public static void copyDir(File from,File to) throws IOException + { + if (to.exists()) + { + if (!to.isDirectory()) + throw new IllegalArgumentException(to.toString()); + } + else + to.mkdirs(); + + File[] files = from.listFiles(); + if (files!=null) + { + for (int i=0;i<files.length;i++) + { + String name = files[i].getName(); + if (".".equals(name) || "..".equals(name)) + continue; + copy(files[i],new File(to,name)); + } + } + } + + /* ------------------------------------------------------------ */ + public static void copyFile(File from,File to) throws IOException + { + FileInputStream in=new FileInputStream(from); + FileOutputStream out=new FileOutputStream(to); + copy(in,out); + in.close(); + out.close(); + } + - /* ------------------------------------------------------------ */ - /** Delete File. - * This delete will recursively delete directories - BE CAREFULL - * @param file The file to be deleted. - */ - public static boolean delete(File file) - { - if (!file.exists()) - return false; - if (file.isDirectory()) - { - File[] files = file.listFiles(); - for (int i=0;files!=null && i<files.length;i++) - delete(files[i]); - } - return file.delete(); - } - - /* ------------------------------------------------------------ */ - /** - * closes any {@link Closeable} - * - * @param c the closeable to close - */ - public static void close(Closeable c) - { - try - { - if (c != null) - c.close(); - } - catch (IOException e) - { - LOG.trace("",e); - } - } - - /** - * closes an input stream, and logs exceptions - * - * @param is the input stream to close - */ - public static void close(InputStream is) - { - try - { - if (is != null) - is.close(); - } - catch (IOException e) - { - LOG.trace("",e); - } - } - - /** - * closes a reader, and logs exceptions - * - * @param reader the reader to close - */ - public static void close(Reader reader) - { - try - { - if (reader != null) - reader.close(); - } catch (IOException e) - { - LOG.trace("",e); - } - } + /* ------------------------------------------------------------ */ + /** + * closes any {@link Closeable} + * + * @param c the closeable to close + */ + public static void close(Closeable c) + { + try + { + if (c != null) + c.close(); + } + catch (IOException e) + { + LOG.trace("",e); + } + } + + /** + * closes an input stream, and logs exceptions + * + * @param is the input stream to close + */ + public static void close(InputStream is) + { + try + { + if (is != null) + is.close(); + } + catch (IOException e) + { + LOG.trace("",e); + } + } - /** - * closes a writer, and logs exceptions - * - * @param writer the writer to close - */ - public static void close(Writer writer) - { - try - { - if (writer != null) - writer.close(); - } catch (IOException e) - { - LOG.trace("",e); - } - } - - /* ------------------------------------------------------------ */ - public static byte[] readBytes(InputStream in) - throws IOException - { - ByteArrayOutputStream bout = new ByteArrayOutputStream(); - copy(in,bout); - return bout.toByteArray(); - } - - /* ------------------------------------------------------------ */ - /** - * closes an output stream, and logs exceptions - * - * @param os the output stream to close - */ - public static void close(OutputStream os) - { - try - { - if (os != null) - os.close(); - } - catch (IOException e) - { - LOG.trace("",e); - } - } - - /* ------------------------------------------------------------ */ - /** - * @return An outputstream to nowhere - */ - public static OutputStream getNullStream() - { - return __nullStream; - } + /** + * closes a reader, and logs exceptions + * + * @param reader the reader to close + */ + public static void close(Reader reader) + { + try + { + if (reader != null) + reader.close(); + } catch (IOException e) + { + LOG.trace("",e); + } + } - /* ------------------------------------------------------------ */ - /** - * @return An outputstream to nowhere - */ - public static InputStream getClosedStream() - { - return __closedStream; - } - - /* ------------------------------------------------------------ */ - /* ------------------------------------------------------------ */ - private static class NullOS extends OutputStream - { - @Override - public void close(){} - @Override - public void flush(){} - @Override - public void write(byte[]b){} - @Override - public void write(byte[]b,int i,int l){} - @Override - public void write(int b){} - } - private static NullOS __nullStream = new NullOS(); + /** + * closes a writer, and logs exceptions + * + * @param writer the writer to close + */ + public static void close(Writer writer) + { + try + { + if (writer != null) + writer.close(); + } catch (IOException e) + { + LOG.trace("",e); + } + } + + /* ------------------------------------------------------------ */ + /** + * closes an output stream, and logs exceptions + * + * @param os the output stream to close + */ + public static void close(OutputStream os) + { + try + { + if (os != null) + os.close(); + } + catch (IOException e) + { + LOG.trace("",e); + } + } - - /* ------------------------------------------------------------ */ - /* ------------------------------------------------------------ */ - private static class ClosedIS extends InputStream - { - @Override - public int read() throws IOException - { - return -1; - } - } - private static ClosedIS __closedStream = new ClosedIS(); - - /* ------------------------------------------------------------ */ - /** - * @return An writer to nowhere - */ - public static Writer getNullWriter() - { - return __nullWriter; - } - - /* ------------------------------------------------------------ */ - /** - * @return An writer to nowhere - */ - public static PrintWriter getNullPrintWriter() - { - return __nullPrintWriter; - } - - /* ------------------------------------------------------------ */ - /* ------------------------------------------------------------ */ - private static class NullWrite extends Writer - { - @Override - public void close(){} - @Override - public void flush(){} - @Override - public void write(char[]b){} - @Override - public void write(char[]b,int o,int l){} - @Override - public void write(int b){} - @Override - public void write(String s){} - @Override - public void write(String s,int o,int l){} - } - private static NullWrite __nullWriter = new NullWrite(); - private static PrintWriter __nullPrintWriter = new PrintWriter(__nullWriter); + /* ------------------------------------------------------------ */ + /** + * @return An outputstream to nowhere + */ + public static InputStream getClosedStream() + { + return __closedStream; + } + + /* ------------------------------------------------------------ */ + /* ------------------------------------------------------------ */ + private static class ClosedIS extends InputStream + { + @Override + public int read() throws IOException + { + return -1; + } + } + private static ClosedIS __closedStream = new ClosedIS(); } - - - - - - - - -