| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 1999 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Xerces" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation and was |
| * originally based on software copyright (c) 1999, International |
| * Business Machines, Inc., http://www.apache.org. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| |
| package org.apache.xerces.readers; |
| |
| import org.apache.xerces.framework.XMLErrorReporter; |
| import org.apache.xerces.utils.ChunkyByteArray; |
| import org.apache.xerces.utils.QName; |
| import org.apache.xerces.utils.StringPool; |
| |
| import java.io.InputStreamReader; |
| import java.io.IOException; |
| import java.io.UnsupportedEncodingException; |
| |
| /** |
| * |
| * @version |
| */ |
| final class UTF8Recognizer extends XMLDeclRecognizer { |
| private byte[] fUTF8BOM = {(byte)0xEF, (byte)0xBB, (byte)0xBF}; |
| // |
| // |
| // |
| public XMLEntityHandler.EntityReader recognize(XMLEntityReaderFactory readerFactory, |
| XMLEntityHandler entityHandler, |
| XMLErrorReporter errorReporter, |
| boolean sendCharDataAsCharArray, |
| StringPool stringPool, |
| ChunkyByteArray data, |
| boolean xmlDecl, |
| boolean allowJavaEncodingName) throws Exception { |
| XMLEntityHandler.EntityReader reader = null; |
| |
| //check to see if there is a UTF8 BOM, if see one, skip past it. |
| boolean seeBOM = false; |
| byte bom0 = data.byteAt(0); |
| if (bom0 == fUTF8BOM[0]) { |
| byte bom1 = data.byteAt(1); |
| if (bom1 == fUTF8BOM[1]) { |
| byte bom2 = data.byteAt(2); |
| if (bom2 == fUTF8BOM[2]) { |
| seeBOM = true; |
| } |
| } |
| } |
| if (seeBOM) { |
| // it will have the same content anyway. |
| data.read(fUTF8BOM, 0, 3); |
| } |
| |
| byte b0 = data.byteAt(0); |
| boolean debug = false; |
| |
| if (b0 == '<') { |
| int b1 = data.byteAt(1); |
| if (b1 == '?') { |
| if (data.byteAt(2) == 'x' && data.byteAt(3) == 'm' && data.byteAt(4) == 'l') { |
| int b5 = data.byteAt(5); |
| if (b5 == 0x20 || b5 == 0x09 || b5 == 0x0a || b5 == 0x0d) { |
| XMLEntityHandler.EntityReader declReader = new XMLDeclReader(entityHandler, errorReporter, sendCharDataAsCharArray, data, stringPool); |
| int encoding = prescanXMLDeclOrTextDecl(declReader, xmlDecl); |
| if (encoding != -1) { |
| String encname = stringPool.orphanString(encoding); |
| String enc = encname.toUpperCase(); |
| if ("ISO-10646-UCS-2".equals(enc)) throw new UnsupportedEncodingException(encname); |
| if ("ISO-10646-UCS-4".equals(enc)) throw new UnsupportedEncodingException(encname); |
| if ("UTF-16".equals(enc)) throw new UnsupportedEncodingException(encname); |
| |
| String javaencname = MIME2Java.convert(enc); |
| if (null == javaencname) { |
| // Not supported |
| if (allowJavaEncodingName) { |
| javaencname = encname; |
| } else { |
| throw new UnsupportedEncodingException(encname); |
| } |
| } |
| try { |
| data.rewind(); |
| if ("UTF-8".equalsIgnoreCase(javaencname) || "UTF8".equalsIgnoreCase(javaencname)) { |
| reader = readerFactory.createUTF8Reader(entityHandler, errorReporter, sendCharDataAsCharArray, data, stringPool); |
| } else { |
| reader = readerFactory.createCharReader(entityHandler, errorReporter, sendCharDataAsCharArray, |
| new InputStreamReader(data, javaencname), stringPool); |
| } |
| } catch (UnsupportedEncodingException e) { |
| throw new UnsupportedEncodingException(encname); |
| } catch (Exception e) { |
| if( debug == true ) |
| e.printStackTrace(); // Internal Error |
| } |
| } else { |
| data.rewind(); |
| reader = readerFactory.createUTF8Reader(entityHandler, errorReporter, sendCharDataAsCharArray, data, stringPool); |
| } |
| } |
| } |
| } |
| } |
| return reader; |
| } |
| |
| final class XMLDeclReader extends XMLEntityReader { |
| // |
| // |
| // |
| private StringPool fStringPool = null; |
| private ChunkyByteArray fData = null; |
| // |
| // |
| // |
| XMLDeclReader(XMLEntityHandler entityHandler, XMLErrorReporter errorReporter, boolean sendCharDataAsCharArray, ChunkyByteArray data, StringPool stringPool) { |
| super(entityHandler, errorReporter, sendCharDataAsCharArray); |
| fStringPool = stringPool; |
| fData = data; |
| } |
| // |
| // These methods are used to parse XMLDecl/TextDecl. |
| // |
| public boolean lookingAtChar(char ch, boolean skipPastChar) throws IOException { |
| if (fData.byteAt(fCurrentOffset) != ch) |
| return false; |
| if (skipPastChar) |
| fCurrentOffset++; |
| return true; |
| } |
| public boolean lookingAtSpace(boolean skipPastChar) throws IOException { |
| int ch = fData.byteAt(fCurrentOffset) & 0xff; |
| if (ch != 0x20 && ch != 0x09 && ch != 0x0A && ch != 0x0D) |
| return false; |
| if (skipPastChar) |
| fCurrentOffset++; |
| return true; |
| } |
| public void skipPastSpaces() throws IOException { |
| while (true) { |
| int ch = fData.byteAt(fCurrentOffset) & 0xff; |
| if (ch != 0x20 && ch != 0x09 && ch != 0x0A && ch != 0x0D) |
| return; |
| fCurrentOffset++; |
| } |
| } |
| public boolean skippedString(char[] s) throws IOException { |
| int offset = fCurrentOffset; |
| for (int i = 0; i < s.length; i++) { |
| if (fData.byteAt(offset) != s[i]) |
| return false; |
| offset++; |
| } |
| fCurrentOffset = offset; |
| return true; |
| } |
| public int scanStringLiteral() throws Exception { |
| boolean single; |
| if (!(single = lookingAtChar('\'', true)) && !lookingAtChar('\"', true)) { |
| return XMLEntityHandler.STRINGLIT_RESULT_QUOTE_REQUIRED; |
| } |
| int offset = fCurrentOffset; |
| char qchar = single ? '\'' : '\"'; |
| while (true) { |
| byte b = fData.byteAt(fCurrentOffset); |
| if (b == qchar) |
| break; |
| if (b == -1) |
| return XMLEntityHandler.STRINGLIT_RESULT_QUOTE_REQUIRED; |
| fCurrentOffset++; |
| } |
| int length = fCurrentOffset - offset; |
| StringBuffer str = new StringBuffer(length); |
| for (int i = 0; i < length; i++) { |
| str.append((char)fData.byteAt(offset + i)); |
| } |
| int stringIndex = fStringPool.addString(str.toString()); |
| fCurrentOffset++; // move past qchar |
| return stringIndex; |
| } |
| // |
| // The rest of the methods in XMLReader are not used for parsing XMLDecl/TextDecl. |
| // |
| public void append(XMLEntityHandler.CharBuffer charBuffer, int offset, int length) { |
| throw new RuntimeException("RDR002 cannot happen"); |
| } |
| public int addString(int offset, int length) { |
| throw new RuntimeException("RDR002 cannot happen"); |
| } |
| public int addSymbol(int offset, int length) { |
| throw new RuntimeException("RDR002 cannot happen"); |
| } |
| public void skipToChar(char ch) throws IOException { |
| throw new IOException("RDR002 cannot happen"); |
| } |
| public void skipPastName(char fastcheck) throws IOException { |
| throw new IOException("RDR002 cannot happen"); |
| } |
| public void skipPastNmtoken(char fastcheck) throws IOException { |
| throw new IOException("RDR002 cannot happen"); |
| } |
| public boolean lookingAtValidChar(boolean skipPastChar) throws IOException { |
| throw new IOException("RDR002 cannot happen"); |
| } |
| public int scanInvalidChar() throws IOException { |
| throw new IOException("RDR002 cannot happen"); |
| } |
| public int scanCharRef(boolean hex) throws IOException { |
| throw new IOException("RDR002 cannot happen"); |
| } |
| public int scanAttValue(char qchar, boolean asSymbol) throws IOException { |
| throw new IOException("RDR002 cannot happen"); |
| } |
| public int scanEntityValue(int qchar, boolean createString) throws IOException { |
| throw new IOException("RDR002 cannot happen"); |
| } |
| public boolean scanExpectedName(char fastcheck, StringPool.CharArrayRange expectedName) throws IOException { |
| throw new IOException("RDR002 cannot happen"); |
| } |
| public void scanQName(char fastcheck, QName qname) throws IOException { |
| throw new IOException("RDR002 cannot happen"); |
| } |
| public int scanName(char fastcheck) throws IOException { |
| throw new IOException("RDR002 cannot happen"); |
| } |
| public int scanContent(QName element) throws IOException { |
| throw new IOException("RDR002 cannot happen"); |
| } |
| } |
| } |
