List of usage examples for java.io PushbackInputStream read
public int read(byte b[]) throws IOException
b.length bytes of data from this input stream into an array of bytes. From source file:edu.mayo.trilliumbridge.webapp.TransformerController.java
/** * From http://stackoverflow.com/a/9737529/656853 *///from w w w . j av a2 s. c o m private InputStream checkForUtf8BOMAndDiscardIfAny(InputStream inputStream) throws IOException { PushbackInputStream pushbackInputStream = new PushbackInputStream(new BufferedInputStream(inputStream), 3); byte[] bom = new byte[3]; if (pushbackInputStream.read(bom) != -1) { if (!(bom[0] == (byte) 0xEF && bom[1] == (byte) 0xBB && bom[2] == (byte) 0xBF)) { pushbackInputStream.unread(bom); } } return pushbackInputStream; }
From source file:net.rptools.assets.supplier.AbstractURIAssetSupplier.java
/** * Create an asset and determine its format. * @param id id of asset//from www . ja v a2 s. c o m * @param type type of asset * @param listener listener to inform of (partial) completion * @param assetLength length, if known, or -1 * @param stream stream to read * @return asset * @throws IOException I/O problems */ @ThreadPolicy(ThreadPolicy.ThreadId.ANY) protected AssetImpl newAsset(final String id, final Type type, final AssetListener listener, final int assetLength, final InputStream stream) throws IOException { final InputStream input = new InputStreamInterceptor(getComponent().getFramework(), id, assetLength, stream, listener, getNotifyInterval()); final PushbackInputStream pushbackStream = new PushbackInputStream(input, PUSHBACK_LIMIT); final byte[] firstBytes = new byte[PUSHBACK_LIMIT]; final int actualLength = pushbackStream.read(firstBytes); if (actualLength != -1) { pushbackStream.unread(firstBytes, 0, actualLength); } final ByteArrayInputStream bais = new ByteArrayInputStream(firstBytes); final String mimeType = URLConnection.guessContentTypeFromStream(bais); LOGGER.debug("mimeType={}, actualLength={}", mimeType, actualLength); // read in image AssetImpl asset = null; switch (type) { case IMAGE: asset = new AssetImpl(new Image(pushbackStream)); asset.setMimetype(mimeType); break; case TEXT: asset = new AssetImpl(IOUtils.toString(pushbackStream, StandardCharsets.UTF_8.name())); asset.setMimetype(mimeType); break; default: break; } if (listener != null) { listener.notify(id, asset); } return asset; }
From source file:libepg.ts.reader.Reader2.java
/** * ??????<br>//from www. j a v a 2s .co m * 1:???????????1??????<br> * 2:?????????????<br> * 3:??????1??????<br> * ???????????<br> * 4:1?<br> * * @return ??? */ public synchronized List<TsPacket> getPackets() { ByteBuffer packetBuffer = ByteBuffer.allocate(TsPacket.TS_PACKET_BYTE_LENGTH.PACKET_LENGTH.getByteLength()); byte[] byteData = new byte[1]; //? List<TsPacket> packets = new ArrayList<>(); FileInputStream fis = null; PushbackInputStream pis = null; try { fis = new FileInputStream(this.TSFile); pis = new PushbackInputStream(fis); boolean tipOfPacket = false;//? long count = 0; //??????1?????? while (pis.read(byteData) != EOF) { //??????????????? if ((byteData[0] == TsPacket.TS_SYNC_BYTE) && (tipOfPacket == false)) { tipOfPacket = true; if (LOG.isTraceEnabled() && NOT_DETERRENT_READ_TRACE_LOG) { LOG.trace( "???????????1????"); } pis.unread(byteData); } if (tipOfPacket == true) { byte[] tsPacketData = new byte[TsPacket.TS_PACKET_BYTE_LENGTH.PACKET_LENGTH.getByteLength()]; if (pis.read(tsPacketData) != EOF) { if (LOG.isTraceEnabled() && NOT_DETERRENT_READ_TRACE_LOG) { LOG.trace( "??????????????"); } packetBuffer.put(tsPacketData); } else { break; } } if (packetBuffer.remaining() == 0) { byte[] BeforeCutDown = packetBuffer.array(); byte[] AfterCutDown = new byte[packetBuffer.position()]; System.arraycopy(BeforeCutDown, 0, AfterCutDown, 0, AfterCutDown.length); //?????????? TsPacket tsp = new TsPacket(AfterCutDown); // LOG.debug(Hex.encodeHexString(tsp.getData())); if (LOG.isTraceEnabled() && NOT_DETERRENT_READ_TRACE_LOG) { LOG.trace( "1???????? "); LOG.trace(tsp.toString()); } if (tsp.getTransport_error_indicator() != 0) { if (LOG.isWarnEnabled()) { LOG.warn( "??1????????????????????"); LOG.warn(tsp); LOG.warn(TSFile); } tipOfPacket = false; } else { packets.add(tsp); count++; } packetBuffer.clear(); tipOfPacket = false; if (this.readLimit != null && count >= this.readLimit) { if (LOG.isInfoEnabled()) { LOG.info( "????????????? ?? = " + this.readLimit); } break; } } } if (LOG.isTraceEnabled() && NOT_DETERRENT_READ_TRACE_LOG) { LOG.trace("?????????"); LOG.trace(" = " + Hex.encodeHexString(packetBuffer.array())); } pis.close(); fis.close(); LOG.info("??? = " + count); } catch (FileNotFoundException e) { LOG.fatal("?????", e); } catch (IOException e) { LOG.fatal("???", e); } return Collections.unmodifiableList(packets); }
From source file:com.nominanuda.web.http.HttpCoreHelper.java
public HttpMessage deserialize(InputStream is) throws IOException, HttpException { PushbackInputStream pis = new PushbackInputStream(is, 4); byte[] bb = new byte[4]; Check.illegalargument.assertTrue(4 == pis.read(bb), "premature end of stream"); pis.unread(bb);/*from w w w . j a v a 2 s .c om*/ return bb[0] == 'H' && bb[1] == 'T' && bb[2] == 'T' && bb[3] == 'P' ? deserializeResponse(pis) : deserializeRequest(pis); }
From source file:com.github.lucapino.sheetmaker.renderer.GmTemplateRenderer.java
private InputStream checkForUtf8BOMAndDiscardIfAny(InputStream inputStream) throws IOException { PushbackInputStream pushbackInputStream = new PushbackInputStream(new BufferedInputStream(inputStream), 3); byte[] bom = new byte[3]; if (pushbackInputStream.read(bom) != -1) { if (!(bom[0] == (byte) 0xEF && bom[1] == (byte) 0xBB && bom[2] == (byte) 0xBF)) { pushbackInputStream.unread(bom); }//from w w w.j a v a 2 s . c o m } return pushbackInputStream; }
From source file:edu.virginia.speclab.juxta.author.model.JuxtaXMLParser.java
private InputStream stripUtf8Bom(InputStream inputStream) throws IOException { PushbackInputStream pushbackInputStream = new PushbackInputStream(new BufferedInputStream(inputStream), 3); byte[] bom = new byte[3]; if (pushbackInputStream.read(bom) != -1) { if (!(bom[0] == (byte) 0xEF && bom[1] == (byte) 0xBB && bom[2] == (byte) 0xBF)) { pushbackInputStream.unread(bom); }//from w w w . ja v a2s . c o m } return pushbackInputStream; }
From source file:jef.tools.XMLUtils.java
/** * XML//from www. j a v a 2 s . c o m * * @param in * ? * @param charSet * ? * @param ignorComment * * @return Document. DOM * @throws SAXException * ? * @throws IOException * */ public static Document loadDocument(InputStream in, String charSet, boolean ignorComments, boolean namespaceAware) throws SAXException, IOException { DocumentBuilder db = REUSABLE_BUILDER.get().getDocumentBuilder(ignorComments, namespaceAware); InputSource is = null; // ????charset if (charSet == null) {// ?200??? byte[] buf = new byte[200]; PushbackInputStream pin = new PushbackInputStream(in, 200); in = pin; int len = pin.read(buf); if (len > 0) { pin.unread(buf, 0, len); charSet = getCharsetInXml(buf, len); } } if (charSet != null) { is = new InputSource(new XmlFixedReader(new InputStreamReader(in, charSet))); is.setEncoding(charSet); } else { // ? Reader reader = new InputStreamReader(in, "UTF-8");// XML???Reader??Reader?XML? is = new InputSource(new XmlFixedReader(reader)); } Document doc = db.parse(is); doc.setXmlStandalone(true);// True???standalone="no" return doc; }
From source file:XmlReader.java
private XmlReader(InputStream stream) throws IOException { super(stream); PushbackInputStream pb; byte buf[];//from w w w .jav a2 s.c o m int len; /*if (stream instanceof PushbackInputStream) pb = (PushbackInputStream) stream; else*/ /** * Commented out the above code to make sure it works when the * document is accessed using http. URL connection in the code uses * a PushbackInputStream with size 7 and when we try to push back * MAX which default value is set to 512 we get and exception. So * that's why we need to wrap the stream irrespective of what type * of stream we start off with. */ pb = new PushbackInputStream(stream, MAXPUSHBACK); // // See if we can figure out the character encoding used // in this file by peeking at the first few bytes. // buf = new byte[4]; len = pb.read(buf); if (len > 0) pb.unread(buf, 0, len); if (len == 4) switch (buf[0] & 0x0ff) { case 0: // 00 3c 00 3f == illegal UTF-16 big-endian if (buf[1] == 0x3c && buf[2] == 0x00 && buf[3] == 0x3f) { setEncoding(pb, "UnicodeBig"); return; } // else it's probably UCS-4 break; case '<': // 0x3c: the most common cases! switch (buf[1] & 0x0ff) { // First character is '<'; could be XML without // an XML directive such as "<hello>", "<!-- ...", // and so on. default: break; // 3c 00 3f 00 == illegal UTF-16 little endian case 0x00: if (buf[2] == 0x3f && buf[3] == 0x00) { setEncoding(pb, "UnicodeLittle"); return; } // else probably UCS-4 break; // 3c 3f 78 6d == ASCII and supersets '<?xm' case '?': if (buf[2] != 'x' || buf[3] != 'm') break; // // One of several encodings could be used: // Shift-JIS, ASCII, UTF-8, ISO-8859-*, etc // useEncodingDecl(pb, "UTF8"); return; } break; // 4c 6f a7 94 ... some EBCDIC code page case 0x4c: if (buf[1] == 0x6f && (0x0ff & buf[2]) == 0x0a7 && (0x0ff & buf[3]) == 0x094) { useEncodingDecl(pb, "CP037"); return; } // whoops, treat as UTF-8 break; // UTF-16 big-endian case 0xfe: if ((buf[1] & 0x0ff) != 0xff) break; setEncoding(pb, "UTF-16"); return; // UTF-16 little-endian case 0xff: if ((buf[1] & 0x0ff) != 0xfe) break; setEncoding(pb, "UTF-16"); return; // default ... no XML declaration default: break; } // // If all else fails, assume XML without a declaration, and // using UTF-8 encoding. // setEncoding(pb, "UTF-8"); }
From source file:org.apache.pulsar.io.file.utils.GZipFiles.java
/** * Returns true if the given file is a gzip file. */// w ww. ja v a 2s. com @SuppressWarnings("deprecation") public static boolean isGzip(File f) { InputStream input = null; try { input = new FileInputStream(f); PushbackInputStream pb = new PushbackInputStream(input, 2); byte[] signature = new byte[2]; int len = pb.read(signature); //read the signature pb.unread(signature, 0, len); //push back the signature to the stream // check if matches standard gzip magic number return (signature[0] == (byte) 0x1f && signature[1] == (byte) 0x8b); } catch (final Exception e) { return false; } finally { IOUtils.closeQuietly(input); } }
From source file:org.apache.synapse.format.hessian.HessianMessageBuilder.java
/** * Reads the first four bytes of the inputstream to detect whether the message represents a * fault message. Once a fault message has been detected, a property used to mark fault messages * is stored in the Axis2 message context. The implementaton uses a PushbackInputStream to be * able to put those four bytes back at the end of processing. * * @param messageContext the Axis2 message context * @param inputStream the inputstream to read the Hessian message * * @return the wrapped (pushback) input stream * * @throws IOException if an I/O error occurs *///from w w w. j av a2 s .co m private PushbackInputStream detectAndMarkMessageFault(final MessageContext messageContext, final InputStream inputStream) throws IOException { int bytesToRead = 4; PushbackInputStream pis = new PushbackInputStream(inputStream, bytesToRead); byte[] headerBytes = new byte[bytesToRead]; int n = pis.read(headerBytes); // checking fourth byte for fault marker if (n == bytesToRead) { if (headerBytes[bytesToRead - 1] == HessianConstants.HESSIAN_V1_FAULT_IDENTIFIER || headerBytes[bytesToRead - 1] == HessianConstants.HESSIAN_V2_FAULT_IDENTIFIER) { messageContext.setProperty(BaseConstants.FAULT_MESSAGE, SynapseConstants.TRUE); if (log.isDebugEnabled()) { log.debug("Hessian fault detected, marking in Axis2 message context"); } } pis.unread(headerBytes); } else if (n > 0) { byte[] bytesRead = new byte[n]; System.arraycopy(headerBytes, 0, bytesRead, 0, n); pis.unread(bytesRead); } return pis; }