List of usage examples for java.io DataInputStream readUnsignedByte
public final int readUnsignedByte() throws IOException
readUnsignedByte method of DataInput. From source file:bobs.is.compress.sevenzip.SevenZFile.java
private Archive readHeaders(final byte[] password) throws IOException { final byte[] signature = new byte[6]; file.readFully(signature);/*w ww.j a v a 2s . co m*/ if (!Arrays.equals(signature, sevenZSignature)) { throw new IOException("Bad 7z signature"); } // 7zFormat.txt has it wrong - it's first major then minor final byte archiveVersionMajor = file.readByte(); final byte archiveVersionMinor = file.readByte(); if (archiveVersionMajor != 0) { throw new IOException( String.format("Unsupported 7z version (%d,%d)", archiveVersionMajor, archiveVersionMinor)); } final long startHeaderCrc = 0xffffFFFFL & Integer.reverseBytes(file.readInt()); final StartHeader startHeader = readStartHeader(startHeaderCrc); final int nextHeaderSizeInt = (int) startHeader.nextHeaderSize; if (nextHeaderSizeInt != startHeader.nextHeaderSize) { throw new IOException("cannot handle nextHeaderSize " + startHeader.nextHeaderSize); } file.seek(SIGNATURE_HEADER_SIZE + startHeader.nextHeaderOffset); final byte[] nextHeader = new byte[nextHeaderSizeInt]; file.readFully(nextHeader); final CRC32 crc = new CRC32(); crc.update(nextHeader); if (startHeader.nextHeaderCrc != crc.getValue()) { throw new IOException("NextHeader CRC mismatch"); } final ByteArrayInputStream byteStream = new ByteArrayInputStream(nextHeader); DataInputStream nextHeaderInputStream = new DataInputStream(byteStream); Archive archive = new Archive(); int nid = nextHeaderInputStream.readUnsignedByte(); if (nid == NID.kEncodedHeader) { nextHeaderInputStream = readEncodedHeader(nextHeaderInputStream, archive, password); // Archive gets rebuilt with the new header archive = new Archive(); nid = nextHeaderInputStream.readUnsignedByte(); } if (nid == NID.kHeader) { readHeader(nextHeaderInputStream, archive); nextHeaderInputStream.close(); } else { throw new IOException("Broken or unsupported archive: no Header"); } return archive; }
From source file:com.ocpsoft.pretty.faces.config.annotation.ByteCodeAnnotationFilter.java
/** * <p>//ww w. j a v a 2 s.c om * Checks whether that supplied {@link InputStream} contains a Java class * file that might contain PrettyFaces annotations. * </p> * <p> * The caller of this method is responsible to close the supplied * {@link InputStream}. This method won't do it! * </p> * * @param classFileStream * The stream to read the class file from. * @return <code>true</code> for files that should be further checked for * annotations * @throws IOException * for any kind of IO problem */ @SuppressWarnings("unused") public boolean accept(InputStream classFileStream) throws IOException { // open a DataInputStream DataInputStream in = new DataInputStream(classFileStream); // read magic and abort if it doesn't match int magic = in.readInt(); if (magic != CLASS_FILE_MAGIC) { if (log.isDebugEnabled()) { log.debug("Magic not found! Not a valid class file!"); } return false; } // check for at least JDK 1.5 int minor = in.readUnsignedShort(); int major = in.readUnsignedShort(); if (major < 49) { // JDK 1.4 or less if (log.isTraceEnabled()) { log.trace("Not a JDK5 class! It cannot contain annotations!"); } return false; } // this values is equal to the number entries in the constants pool + 1 int constantPoolEntries = in.readUnsignedShort() - 1; // loop over all entries in the constants pool for (int i = 0; i < constantPoolEntries; i++) { // the tag to identify the record type int tag = in.readUnsignedByte(); // process record according to its type switch (tag) { case CONSTANT_Class: /* * CONSTANT_Class_info { * u1 tag; * u2 name_index; * } */ in.readUnsignedShort(); break; case CONSTANT_Fieldref: case CONSTANT_Methodref: case CONSTANT_InterfaceMethodref: /* * CONSTANT_[Fieldref|Methodref|InterfaceMethodref]_info { * u1 tag; * u2 class_index; * u2 name_and_type_index; * } */ in.readUnsignedShort(); in.readUnsignedShort(); break; case CONSTANT_String: /* * CONSTANT_String_info { * u1 tag; * u2 string_index; * } */ in.readUnsignedShort(); break; case CONSTANT_Integer: case CONSTANT_Float: /* * CONSTANT_[Integer|Float]_info { * u1 tag; * u4 bytes; * } */ in.readInt(); break; case CONSTANT_Long: case CONSTANT_Double: /* * CONSTANT_Long_info { * u1 tag; * u4 high_bytes; * u4 low_bytes; * } */ in.readLong(); /* * We must increase the constant pool index because this tag * type takes two entries */ i++; break; case CONSTANT_NameAndType: /* * CONSTANT_NameAndType_info { * u1 tag; * u2 name_index; * u2 descriptor_index; * } */ in.readUnsignedShort(); in.readUnsignedShort(); break; case CONSTANT_Utf8: /* * CONSTANT_Utf8_info { * u1 tag; * u2 length; * u1 bytes[length]; * } */ String str = in.readUTF(); // check if this string sounds interesting if (str.contains(SEARCH_STRING)) { if (log.isTraceEnabled()) { log.trace("Found PrettyFaces annotation reference in constant pool: " + str); } return true; } break; default: /* * Unknown tag! Should not happen! We will scan the class in this case. */ if (log.isDebugEnabled()) { log.debug("Unknown constant pool tag found: " + tag); } return true; } } /* * We are finished with reading the interesting parts of the class file. * We stop here because the file doesn't seem to be interesting. */ if (log.isTraceEnabled()) { log.trace("No reference to PrettyFaces annotations found!"); } return false; }
From source file:org.apache.fop.fonts.type1.PFBParser.java
/** * Parses a PFB file into a PFBData object. * @param in InputStream to load the PFB file from * @return PFBData memory representation of the font * @throws IOException In case of an I/O problem *///w w w . j av a 2s. c om public PFBData parsePFB(InputStream in) throws IOException { PFBData pfb = new PFBData(); BufferedInputStream bin = new BufferedInputStream(in); DataInputStream din = new DataInputStream(bin); din.mark(32); int firstByte = din.readUnsignedByte(); din.reset(); if (firstByte == 128) { pfb.setPFBFormat(PFBData.PFB_PC); parsePCFormat(pfb, din); } else { pfb.setPFBFormat(PFBData.PFB_RAW); parseRAWFormat(pfb, bin); } return pfb; }
From source file:org.apache.fop.fonts.type1.PFBParser.java
private void parsePCFormat(PFBData pfb, DataInputStream din) throws IOException { int segmentHead; int segmentType; int bytesRead; //Read first segment segmentHead = din.readUnsignedByte(); if (segmentHead != 128) { throw new IOException("Invalid file format. Expected ASCII 80hex"); }// www .j av a 2 s. co m segmentType = din.readUnsignedByte(); //Read int len1 = swapInteger(din.readInt()); byte[] headerSegment = new byte[len1]; din.readFully(headerSegment); pfb.setHeaderSegment(headerSegment); //Read second segment segmentHead = din.readUnsignedByte(); if (segmentHead != 128) { throw new IOException("Invalid file format. Expected ASCII 80hex"); } segmentType = din.readUnsignedByte(); int len2 = swapInteger(din.readInt()); byte[] encryptedSegment = new byte[len2]; din.readFully(encryptedSegment); pfb.setEncryptedSegment(encryptedSegment); //Read third segment segmentHead = din.readUnsignedByte(); if (segmentHead != 128) { throw new IOException("Invalid file format. Expected ASCII 80hex"); } segmentType = din.readUnsignedByte(); int len3 = swapInteger(din.readInt()); byte[] trailerSegment = new byte[len3]; din.readFully(trailerSegment); pfb.setTrailerSegment(trailerSegment); //Read EOF indicator segmentHead = din.readUnsignedByte(); if (segmentHead != 128) { throw new IOException("Invalid file format. Expected ASCII 80hex"); } segmentType = din.readUnsignedByte(); if (segmentType != 3) { throw new IOException("Expected segment type 3, but found: " + segmentType); } }
From source file:tor.TorCrypto.java
/** * Parses a public key encoded as ASN.1// w w w .ja va2 s . c o m * * @param rsapublickey ASN.1 Encoded public key * @return PublicKey */ public static PublicKey asn1GetPublicKey(byte[] rsapublickey) { int blobsize = rsapublickey.length; DataInputStream dis = null; int jint = 0; // int to represent unsigned byte or unsigned short int datacount = 0; try { // --- Try to read the ANS.1 encoded RSAPublicKey blob ------------- ByteArrayInputStream bis = new ByteArrayInputStream(rsapublickey); dis = new DataInputStream(bis); if (dis.readByte() != 0x30) // asn.1 encoded starts with 0x30 return null; jint = dis.readUnsignedByte(); // asn.1 is 0x80 plus number of bytes // representing data count if (jint == 0x81) datacount = dis.readUnsignedByte(); // datalength is specified // in next byte. else if (jint == 0x82) // bytes count for any supported keysize // would be at most 2 bytes datacount = dis.readUnsignedShort(); // datalength is specified // in next 2 bytes else return null; // all supported publickey byte-sizes can be // specified in at most 2 bytes if ((jint - 0x80 + 2 + datacount) != blobsize) // sanity check for // correct number of // remaining bytes return null; // System.out // .println("\nRead outer sequence bytes; validated outer asn.1 consistency "); // ------- Next attempt to read Integer sequence for modulus ------ if (dis.readUnsignedByte() != 0x02) // next byte read must be // Integer asn.1 specifier return null; jint = dis.readUnsignedByte(); // asn.1 is 0x80 plus number of bytes // representing data count if (jint == 0x81) datacount = dis.readUnsignedByte(); // datalength is specified // in next byte. else if (jint == 0x82) // bytes count for any supported keysize // would be at most 2 bytes datacount = dis.readUnsignedShort(); // datalength is specified // in next 2 bytes else return null; // all supported publickey modulus byte-sizes can // be specified in at most 2 bytes // ---- next bytes are big-endian ordered modulus ----- byte[] modulus = new byte[datacount]; int modbytes = dis.read(modulus); if (modbytes != datacount) // if we can read enought modulus bytes // ... return null; //System.out.println("Read modulus"); // ------- Next attempt to read Integer sequence for public exponent // ------ if (dis.readUnsignedByte() != 0x02) // next byte read must be // Integer asn.1 specifier return null; datacount = dis.readUnsignedByte(); // size of modulus is specified // in one byte byte[] exponent = new byte[datacount]; int expbytes = dis.read(exponent); if (expbytes != datacount) return null; //System.out.println("Read exponent"); // ----- Finally, create the PublicKey object from modulus and // public exponent -------- RSAPublicKeySpec pubKeySpec = new RSAPublicKeySpec(new BigInteger(1, modulus), new BigInteger(1, exponent)); KeyFactory keyFactory = KeyFactory.getInstance("RSA"); PublicKey pubKey = keyFactory.generatePublic(pubKeySpec); return pubKey; } catch (Exception exc) { return null; } finally { try { dis.close(); } catch (Exception exc) { /* ignore */ ; } } }
From source file:ubic.gemma.analysis.preprocess.batcheffects.AffyScanDateExtractor.java
private int readUnsignedByteLittleEndian(DataInputStream dis) throws IOException { return dis.readUnsignedByte(); }
From source file:ubic.gemma.core.analysis.preprocess.batcheffects.AffyScanDateExtractor.java
private int readUnsignedByte(DataInputStream dis) throws IOException { return dis.readUnsignedByte(); }
From source file:ubic.gemma.core.loader.expression.arrayDesign.AffyChipTypeExtractor.java
private static int readUnsignedByte(DataInputStream dis) throws IOException { return dis.readUnsignedByte(); }
From source file:ubic.gemma.image.aba.AllenBrainAtlasServiceImpl.java
private void transferData(DataInputStream in, OutputStream out) throws IOException { // This is whacked. There must be a better way than throwing an exception. boolean EOF = false; while (!EOF) { try {/* www .j ava 2 s . c o m*/ out.write(in.readUnsignedByte()); } catch (EOFException eof) { EOF = true; } } }
From source file:VASSAL.tools.imports.adc2.MapBoard.java
/** * Read primary and secondary symbol information. Each hex may only have one of each. Additional symbols must * be tertiary attributes./* www .j a va2 s. co m*/ */ protected void readHexDataBlock(DataInputStream in) throws IOException { ADC2Utils.readBlockHeader(in, "Hex Data"); int count = getNColumns() * getNRows(); for (int i = 0; i < count; ++i) { // primary symbol int symbolIndex = ADC2Utils.readBase250Word(in); SymbolSet.SymbolData symbol = getSet().getMapBoardSymbol(symbolIndex); if (symbol != null) primaryMapBoardSymbols.add(new HexData(i, symbol)); // secondary symbol symbolIndex = ADC2Utils.readBase250Word(in); symbol = getSet().getMapBoardSymbol(symbolIndex); if (symbol != null) secondaryMapBoardSymbols.add(new HexData(i, symbol)); /* int elevation = */ ADC2Utils.readBase250Word(in); // flags for hexsides, lines, and placenames: completely ignored /* int additionalInformation = */ in.readUnsignedByte(); } }