/*
* Copyright (c) 2003, 2006, Oracle and/or its affiliates. All rights reserved.
*/
/*
* Copyright 2005 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.sun.org.apache.xerces.internal.impl;
import com.sun.xml.internal.stream.XMLEntityStorage;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import javax.xml.stream.events.XMLEvent;
import com.sun.org.apache.xerces.internal.impl.msg.XMLMessageFormatter;
import com.sun.org.apache.xerces.internal.util.SymbolTable;
import com.sun.org.apache.xerces.internal.util.XMLChar;
import com.sun.org.apache.xerces.internal.util.XMLResourceIdentifierImpl;
import com.sun.org.apache.xerces.internal.util.XMLStringBuffer;
import com.sun.org.apache.xerces.internal.xni.Augmentations;
import com.sun.org.apache.xerces.internal.xni.XMLAttributes;
import com.sun.org.apache.xerces.internal.xni.XMLResourceIdentifier;
import com.sun.org.apache.xerces.internal.xni.XMLString;
import com.sun.org.apache.xerces.internal.xni.XNIException;
import com.sun.org.apache.xerces.internal.xni.parser.XMLComponent;
import com.sun.org.apache.xerces.internal.xni.parser.XMLComponentManager;
import com.sun.org.apache.xerces.internal.xni.parser.XMLConfigurationException;
import com.sun.xml.internal.stream.Entity;
//import com.sun.xml.stream.XMLEntityManager;
//import com.sun.org.apache.xerces.internal.impl.XMLErrorReporter;
/**
* This class is responsible for holding scanning methods common to
* scanning the XML document structure and content as well as the DTD
* structure and content. Both XMLDocumentScanner and XMLDTDScanner inherit
* from this base class.
*
* <p>
* This component requires the following features and properties from the
* component manager that uses it:
* <ul>
* <li>http://xml.org/sax/features/validation</li>
* <li>http://apache.org/xml/features/scanner/notify-char-refs</li>
* <li>http://apache.org/xml/properties/internal/symbol-table</li>
* <li>http://apache.org/xml/properties/internal/error-reporter</li>
* <li>http://apache.org/xml/properties/internal/entity-manager</li>
* </ul>
*
* @author Andy Clark, IBM
* @author Arnaud Le Hors, IBM
* @author Eric Ye, IBM
* @author K.Venugopal SUN Microsystems
* @author Sunitha Reddy, SUN Microsystems
* @version $Id: XMLScanner.java,v 1.6 2006/06/06 06:28:41 sunithareddy Exp $
*/
public abstract class XMLScanner
implements XMLComponent {
//
// Constants
//
// feature identifiers
/** Feature identifier: namespaces. */
protected static final String NAMESPACES =
Constants.SAX_FEATURE_PREFIX + Constants.NAMESPACES_FEATURE;
/** Feature identifier: validation. */
protected static final String VALIDATION =
Constants.SAX_FEATURE_PREFIX + Constants.VALIDATION_FEATURE;
/** Feature identifier: notify character references. */
protected static final String NOTIFY_CHAR_REFS =
Constants.XERCES_FEATURE_PREFIX + Constants.NOTIFY_CHAR_REFS_FEATURE;
// property identifiers
protected static final String PARSER_SETTINGS =
Constants.XERCES_FEATURE_PREFIX + Constants.PARSER_SETTINGS;
/** Property identifier: symbol table. */
protected static final String SYMBOL_TABLE =
Constants.XERCES_PROPERTY_PREFIX + Constants.SYMBOL_TABLE_PROPERTY;
/** Property identifier: error reporter. */
protected static final String ERROR_REPORTER =
Constants.XERCES_PROPERTY_PREFIX + Constants.ERROR_REPORTER_PROPERTY;
/** Property identifier: entity manager. */
protected static final String ENTITY_MANAGER =
Constants.XERCES_PROPERTY_PREFIX + Constants.ENTITY_MANAGER_PROPERTY;
// debugging
/** Debug attribute normalization. */
protected static final boolean DEBUG_ATTR_NORMALIZATION = false;
//xxx: setting the default value as false, as we dont need to calculate this value
//we should have a feature when set to true computes this value
private boolean fNeedNonNormalizedValue = false;
protected ArrayList attributeValueCache = new ArrayList();
protected ArrayList stringBufferCache = new ArrayList();
protected int fStringBufferIndex = 0;
protected boolean fAttributeCacheInitDone = false;
protected int fAttributeCacheUsedCount = 0;
//
// Data
//
// features
/**
* Validation. This feature identifier is:
* http://xml.org/sax/features/validation
*/
protected boolean fValidation = false;
/** Namespaces. */
protected boolean fNamespaces;
/** Character references notification. */
protected boolean fNotifyCharRefs = false;
/** Internal parser-settings feature */
protected boolean fParserSettings = true;
// properties
protected PropertyManager fPropertyManager = null ;
/** Symbol table. */
protected SymbolTable fSymbolTable;
/** Error reporter. */
protected XMLErrorReporter fErrorReporter;
/** Entity manager. */
//protected XMLEntityManager fEntityManager = PropertyManager.getEntityManager();
protected XMLEntityManager fEntityManager = null ;
/** xxx this should be available from EntityManager Entity storage */
protected XMLEntityStorage fEntityStore = null ;
// protected data
/** event type */
protected XMLEvent fEvent ;
/** Entity scanner, this alwasy works on last entity that was opened. */
protected XMLEntityScanner fEntityScanner = null;
/** Entity depth. */
protected int fEntityDepth;
/** Literal value of the last character refence scanned. */
protected String fCharRefLiteral = null;
/** Scanning attribute. */
protected boolean fScanningAttribute;
/** Report entity boundary. */
protected boolean fReportEntity;
// symbols
/** Symbol: "version". */
protected final static String fVersionSymbol = "version".intern();
/** Symbol: "encoding". */
protected final static String fEncodingSymbol = "encoding".intern();
/** Symbol: "standalone". */
protected final static String fStandaloneSymbol = "standalone".intern();
/** Symbol: "amp". */
protected final static String fAmpSymbol = "amp".intern();
/** Symbol: "lt". */
protected final static String fLtSymbol = "lt".intern();
/** Symbol: "gt". */
protected final static String fGtSymbol = "gt".intern();
/** Symbol: "quot". */
protected final static String fQuotSymbol = "quot".intern();
/** Symbol: "apos". */
protected final static String fAposSymbol = "apos".intern();
// temporary variables
// NOTE: These objects are private to help prevent accidental modification
// of values by a subclass. If there were protected *and* the sub-
// modified the values, it would be difficult to track down the real
// cause of the bug. By making these private, we avoid this
// possibility.
/** String. */
private XMLString fString = new XMLString();
/** String buffer. */
private XMLStringBuffer fStringBuffer = new XMLStringBuffer();
/** String buffer. */
private XMLStringBuffer fStringBuffer2 = new XMLStringBuffer();
/** String buffer. */
private XMLStringBuffer fStringBuffer3 = new XMLStringBuffer();
// temporary location for Resource identification information.
protected XMLResourceIdentifierImpl fResourceIdentifier = new XMLResourceIdentifierImpl();
int initialCacheCount = 6;
//
// XMLComponent methods
//
/**
*
*
* @param componentManager The component manager.
*
* @throws SAXException Throws exception if required features and
* properties cannot be found.
*/
public void reset(XMLComponentManager componentManager)
throws XMLConfigurationException {
try {
fParserSettings = componentManager.getFeature(PARSER_SETTINGS);
} catch (XMLConfigurationException e) {
fParserSettings = true;
}
if (!fParserSettings) {
// parser settings have not been changed
init();
return;
}
// Xerces properties
fSymbolTable = (SymbolTable)componentManager.getProperty(SYMBOL_TABLE);
fErrorReporter = (XMLErrorReporter)componentManager.getProperty(ERROR_REPORTER);
fEntityManager = (XMLEntityManager)componentManager.getProperty(ENTITY_MANAGER);
//this step is extra because we have separated the storage of entity
fEntityStore = fEntityManager.getEntityStore() ;
// sax features
try {
fValidation = componentManager.getFeature(VALIDATION);
} catch (XMLConfigurationException e) {
fValidation = false;
}
try {
fNamespaces = componentManager.getFeature(NAMESPACES);
}
catch (XMLConfigurationException e) {
fNamespaces = true;
}
try {
fNotifyCharRefs = componentManager.getFeature(NOTIFY_CHAR_REFS);
} catch (XMLConfigurationException e) {
fNotifyCharRefs = false;
}
init();
} // reset(XMLComponentManager)
protected void setPropertyManager(PropertyManager propertyManager){
fPropertyManager = propertyManager ;
}
/**
* Sets the value of a property during parsing.
*
* @param propertyId
* @param value
*/
public void setProperty(String propertyId, Object value)
throws XMLConfigurationException {
// Xerces properties
if (propertyId.startsWith(Constants.XERCES_PROPERTY_PREFIX)) {
String property =
propertyId.substring(Constants.XERCES_PROPERTY_PREFIX.length());
if (property.equals(Constants.SYMBOL_TABLE_PROPERTY)) {
fSymbolTable = (SymbolTable)value;
} else if (property.equals(Constants.ERROR_REPORTER_PROPERTY)) {
fErrorReporter = (XMLErrorReporter)value;
} else if (property.equals(Constants.ENTITY_MANAGER_PROPERTY)) {
fEntityManager = (XMLEntityManager)value;
}
}
/*else if(propertyId.equals(Constants.STAX_PROPERTIES)){
fStaxProperties = (HashMap)value;
//TODO::discuss with neeraj what are his thoughts on passing properties.
//For now use this
}*/
} // setProperty(String,Object)
/*
* Sets the feature of the scanner.
*/
public void setFeature(String featureId, boolean value)
throws XMLConfigurationException {
if (VALIDATION.equals(featureId)) {
fValidation = value;
} else if (NOTIFY_CHAR_REFS.equals(featureId)) {
fNotifyCharRefs = value;
}
}
/*
* Gets the state of the feature of the scanner.
*/
public boolean getFeature(String featureId)
throws XMLConfigurationException {
if (VALIDATION.equals(featureId)) {
return fValidation;
} else if (NOTIFY_CHAR_REFS.equals(featureId)) {
return fNotifyCharRefs;
}
throw new XMLConfigurationException(XMLConfigurationException.NOT_RECOGNIZED, featureId);
}
//
// Protected methods
//
// anybody calling this had better have set Symtoltable!
protected void reset() {
init();
// DTD preparsing defaults:
fValidation = true;
fNotifyCharRefs = false;
}
public void reset(PropertyManager propertyManager) {
init();
// Xerces properties
fSymbolTable = (SymbolTable)propertyManager.getProperty(Constants.XERCES_PROPERTY_PREFIX + Constants.SYMBOL_TABLE_PROPERTY);
fErrorReporter = (XMLErrorReporter)propertyManager.getProperty(Constants.XERCES_PROPERTY_PREFIX + Constants.ERROR_REPORTER_PROPERTY);
fEntityManager = (XMLEntityManager)propertyManager.getProperty(ENTITY_MANAGER);
fEntityStore = fEntityManager.getEntityStore() ;
fEntityScanner = (XMLEntityScanner)fEntityManager.getEntityScanner() ;
//fEntityManager.reset();
// DTD preparsing defaults:
fValidation = false;
fNotifyCharRefs = false;
}
// common scanning methods
/**
* Scans an XML or text declaration.
* <p>
* <pre>
* [23] XMLDecl ::= '<?xml' VersionInfo EncodingDecl? SDDecl? S? '?>'
* [24] VersionInfo ::= S 'version' Eq (' VersionNum ' | " VersionNum ")
* [80] EncodingDecl ::= S 'encoding' Eq ('"' EncName '"' | "'" EncName "'" )
* [81] EncName ::= [A-Za-z] ([A-Za-z0-9._] | '-')*
* [32] SDDecl ::= S 'standalone' Eq (("'" ('yes' | 'no') "'")
* | ('"' ('yes' | 'no') '"'))
*
* [77] TextDecl ::= '<?xml' VersionInfo? EncodingDecl S? '?>'
* </pre>
*
* @param scanningTextDecl True if a text declaration is to
* be scanned instead of an XML
* declaration.
* @param pseudoAttributeValues An array of size 3 to return the version,
* encoding and standalone pseudo attribute values
* (in that order).
*
* <strong>Note:</strong> This method uses fString, anything in it
* at the time of calling is lost.
*/
protected void scanXMLDeclOrTextDecl(boolean scanningTextDecl,
String[] pseudoAttributeValues)
throws IOException, XNIException {
// pseudo-attribute values
String version = null;
String encoding = null;
String standalone = null;
// scan pseudo-attributes
final int STATE_VERSION = 0;
final int STATE_ENCODING = 1;
final int STATE_STANDALONE = 2;
final int STATE_DONE = 3;
int state = STATE_VERSION;
boolean dataFoundForTarget = false;
boolean sawSpace = fEntityScanner.skipSpaces();
// since pseudoattributes are *not* attributes,
// their quotes don't need to be preserved in external parameter entities.
// the XMLEntityScanner#scanLiteral method will continue to
// emit -1 in such cases when it finds a quote; this is
// fine for other methods that parse scanned entities,
// but not for the scanning of pseudoattributes. So,
// temporarily, we must mark the current entity as not being "literal"
Entity.ScannedEntity currEnt = fEntityManager.getCurrentEntity();
boolean currLiteral = currEnt.literal;
currEnt.literal = false;
while (fEntityScanner.peekChar() != '?') {
dataFoundForTarget = true;
String name = scanPseudoAttribute(scanningTextDecl, fString);
switch (state) {
case STATE_VERSION: {
if (name.equals(fVersionSymbol)) {
if (!sawSpace) {
reportFatalError(scanningTextDecl
? "SpaceRequiredBeforeVersionInTextDecl"
: "SpaceRequiredBeforeVersionInXMLDecl",
null);
}
version = fString.toString();
state = STATE_ENCODING;
if (!versionSupported(version)) {
reportFatalError("VersionNotSupported",
new Object[]{version});
}
if (version.equals("1.1")) {
Entity.ScannedEntity top = fEntityManager.getTopLevelEntity();
if (top != null && (top.version == null || top.version.equals("1.0"))) {
reportFatalError("VersionMismatch", null);
}
fEntityManager.setScannerVersion(Constants.XML_VERSION_1_1);
}
} else if (name.equals(fEncodingSymbol)) {
if (!scanningTextDecl) {
reportFatalError("VersionInfoRequired", null);
}
if (!sawSpace) {
reportFatalError(scanningTextDecl
? "SpaceRequiredBeforeEncodingInTextDecl"
: "SpaceRequiredBeforeEncodingInXMLDecl",
null);
}
encoding = fString.toString();
state = scanningTextDecl ? STATE_DONE : STATE_STANDALONE;
} else {
if (scanningTextDecl) {
reportFatalError("EncodingDeclRequired", null);
} else {
reportFatalError("VersionInfoRequired", null);
}
}
break;
}
case STATE_ENCODING: {
if (name.equals(fEncodingSymbol)) {
if (!sawSpace) {
reportFatalError(scanningTextDecl
? "SpaceRequiredBeforeEncodingInTextDecl"
: "SpaceRequiredBeforeEncodingInXMLDecl",
null);
}
encoding = fString.toString();
state = scanningTextDecl ? STATE_DONE : STATE_STANDALONE;
// TODO: check encoding name; set encoding on
// entity scanner
} else if (!scanningTextDecl && name.equals(fStandaloneSymbol)) {
if (!sawSpace) {
reportFatalError("SpaceRequiredBeforeStandalone",
null);
}
standalone = fString.toString();
state = STATE_DONE;
if (!standalone.equals("yes") && !standalone.equals("no")) {
reportFatalError("SDDeclInvalid", new Object[] {standalone});
}
} else {
reportFatalError("EncodingDeclRequired", null);
}
break;
}
case STATE_STANDALONE: {
if (name.equals(fStandaloneSymbol)) {
if (!sawSpace) {
reportFatalError("SpaceRequiredBeforeStandalone",
null);
}
standalone = fString.toString();
state = STATE_DONE;
if (!standalone.equals("yes") && !standalone.equals("no")) {
reportFatalError("SDDeclInvalid", new Object[] {standalone});
}
} else {
reportFatalError("EncodingDeclRequired", null);
}
break;
}
default: {
reportFatalError("NoMorePseudoAttributes", null);
}
}
sawSpace = fEntityScanner.skipSpaces();
}
// restore original literal value
if(currLiteral)
currEnt.literal = true;
// REVISIT: should we remove this error reporting?
if (scanningTextDecl && state != STATE_DONE) {
reportFatalError("MorePseudoAttributes", null);
}
// If there is no data in the xml or text decl then we fail to report error
// for version or encoding info above.
if (scanningTextDecl) {
if (!dataFoundForTarget && encoding == null) {
reportFatalError("EncodingDeclRequired", null);
}
} else {
if (!dataFoundForTarget && version == null) {
reportFatalError("VersionInfoRequired", null);
}
}
// end
if (!fEntityScanner.skipChar('?')) {
reportFatalError("XMLDeclUnterminated", null);
}
if (!fEntityScanner.skipChar('>')) {
reportFatalError("XMLDeclUnterminated", null);
}
// fill in return array
pseudoAttributeValues[0] = version;
pseudoAttributeValues[1] = encoding;
pseudoAttributeValues[2] = standalone;
} // scanXMLDeclOrTextDecl(boolean)
/**
* Scans a pseudo attribute.
*
* @param scanningTextDecl True if scanning this pseudo-attribute for a
* TextDecl; false if scanning XMLDecl. This
* flag is needed to report the correct type of
* error.
* @param value The string to fill in with the attribute
* value.
*
* @return The name of the attribute
*
* <strong>Note:</strong> This method uses fStringBuffer2, anything in it
* at the time of calling is lost.
*/
public String scanPseudoAttribute(boolean scanningTextDecl,
XMLString value)
throws IOException, XNIException {
String name = fEntityScanner.scanName();
// XMLEntityManager.print(fEntityManager.getCurrentEntity());
if (name == null) {
reportFatalError("PseudoAttrNameExpected", null);
}
fEntityScanner.skipSpaces();
if (!fEntityScanner.skipChar('=')) {
reportFatalError(scanningTextDecl ? "EqRequiredInTextDecl"
: "EqRequiredInXMLDecl", new Object[]{name});
}
fEntityScanner.skipSpaces();
int quote = fEntityScanner.peekChar();
if (quote != '\'' && quote != '"') {
reportFatalError(scanningTextDecl ? "QuoteRequiredInTextDecl"
: "QuoteRequiredInXMLDecl" , new Object[]{name});
}
fEntityScanner.scanChar();
int c = fEntityScanner.scanLiteral(quote, value);
if (c != quote) {
fStringBuffer2.clear();
do {
fStringBuffer2.append(value);
if (c != -1) {
if (c == '&' || c == '%' || c == '<' || c == ']') {
fStringBuffer2.append((char)fEntityScanner.scanChar());
} else if (XMLChar.isHighSurrogate(c)) {
scanSurrogates(fStringBuffer2);
} else if (isInvalidLiteral(c)) {
String key = scanningTextDecl
? "InvalidCharInTextDecl" : "InvalidCharInXMLDecl";
reportFatalError(key,
new Object[] {Integer.toString(c, 16)});
fEntityScanner.scanChar();
}
}
c = fEntityScanner.scanLiteral(quote, value);
} while (c != quote);
fStringBuffer2.append(value);
value.setValues(fStringBuffer2);
}
if (!fEntityScanner.skipChar(quote)) {
reportFatalError(scanningTextDecl ? "CloseQuoteMissingInTextDecl"
: "CloseQuoteMissingInXMLDecl",
new Object[]{name});
}
// return
return name;
} // scanPseudoAttribute(XMLString):String
/**
* Scans a processing instruction.
* <p>
* <pre>
* [16] PI ::= '<?' PITarget (S (Char* - (Char* '?>' Char*)))? '?>'
* [17] PITarget ::= Name - (('X' | 'x') ('M' | 'm') ('L' | 'l'))
* </pre>
*/
//CHANGED:
//EARLIER: scanPI()
//NOW: scanPI(XMLStringBuffer)
//it makes things more easy if XMLStringBUffer is passed. Motivation for this change is same
// as that for scanContent()
protected void scanPI(XMLStringBuffer data) throws IOException, XNIException {
// target
fReportEntity = false;
String target = fEntityScanner.scanName();
if (target == null) {
reportFatalError("PITargetRequired", null);
}
// scan data
scanPIData(target, data);
fReportEntity = true;
} // scanPI(XMLStringBuffer)
/**
* Scans a processing data. This is needed to handle the situation
* where a document starts with a processing instruction whose
* target name <em>starts with</em> "xml". (e.g. xmlfoo)
*
* This method would always read the whole data. We have while loop and data is buffered
* until delimeter is encountered.
*
* @param target The PI target
* @param data The string to fill in with the data
*/
//CHANGED:
//Earlier:This method uses the fStringBuffer and later buffer values are set to
//the supplied XMLString....
//Now: Changed the signature of this function to pass XMLStringBuffer.. and data would
//be appended to that buffer
protected void scanPIData(String target, XMLStringBuffer data)
throws IOException, XNIException {
// check target
if (target.length() == 3) {
char c0 = Character.toLowerCase(target.charAt(0));
char c1 = Character.toLowerCase(target.charAt(1));
char c2 = Character.toLowerCase(target.charAt(2));
if (c0 == 'x' && c1 == 'm' && c2 == 'l') {
reportFatalError("ReservedPITarget", null);
}
}
// spaces
if (!fEntityScanner.skipSpaces()) {
if (fEntityScanner.skipString("?>")) {
// we found the end, there is no data just return
return;
} else {
// if there is data there should be some space
reportFatalError("SpaceRequiredInPI", null);
}
}
// since scanData appends the parsed data to the buffer passed
// a while loop would append the whole of parsed data to the buffer(data:XMLStringBuffer)
//until all of the data is buffered.
if (fEntityScanner.scanData("?>", data)) {
do {
int c = fEntityScanner.peekChar();
if (c != -1) {
if (XMLChar.isHighSurrogate(c)) {
scanSurrogates(data);
} else if (isInvalidLiteral(c)) {
reportFatalError("InvalidCharInPI",
new Object[]{Integer.toHexString(c)});
fEntityScanner.scanChar();
}
}
} while (fEntityScanner.scanData("?>", data));
}
} // scanPIData(String,XMLString)
/**
* Scans a comment.
* <p>
* <pre>
* [15] Comment ::= '<!--' ((Char - '-') | ('-' (Char - '-')))* '-->'
* </pre>
* <p>
* <strong>Note:</strong> Called after scanning past '<!--'
* <strong>Note:</strong> This method uses fString, anything in it
* at the time of calling is lost.
*
* @param text The buffer to fill in with the text.
*/
protected void scanComment(XMLStringBuffer text)
throws IOException, XNIException {
//System.out.println( "XMLScanner#scanComment# In Scan Comment" );
// text
// REVISIT: handle invalid character, eof
text.clear();
while (fEntityScanner.scanData("--", text)) {
int c = fEntityScanner.peekChar();
//System.out.println( "XMLScanner#scanComment#text.toString() == " + text.toString() );
//System.out.println( "XMLScanner#scanComment#c == " + c );
if (c != -1) {
if (XMLChar.isHighSurrogate(c)) {
scanSurrogates(text);
}
if (isInvalidLiteral(c)) {
reportFatalError("InvalidCharInComment",
new Object[] { Integer.toHexString(c) });
fEntityScanner.scanChar();
}
}
}
if (!fEntityScanner.skipChar('>')) {
reportFatalError("DashDashInComment", null);
}
} // scanComment()
/**
* Scans an attribute value and normalizes whitespace converting all
* whitespace characters to space characters.
*
* [10] AttValue ::= '"' ([^<&"] | Reference)* '"' | "'" ([^<&'] | Reference)* "'"
*
* @param value The XMLString to fill in with the value.
* @param nonNormalizedValue The XMLString to fill in with the
* non-normalized value.
* @param atName The name of the attribute being parsed (for error msgs).
* @param attributes The attributes list for the scanned attribute.
* @param attrIndex The index of the attribute to use from the list.
* @param checkEntities true if undeclared entities should be reported as VC violation,
* false if undeclared entities should be reported as WFC violation.
*
* <strong>Note:</strong> This method uses fStringBuffer2, anything in it
* at the time of calling is lost.
**/
protected void scanAttributeValue(XMLString value,
XMLString nonNormalizedValue,
String atName,
XMLAttributes attributes, int attrIndex,
boolean checkEntities)
throws IOException, XNIException {
XMLStringBuffer stringBuffer = null;
// quote
int quote = fEntityScanner.peekChar();
if (quote != '\'' && quote != '"') {
reportFatalError("OpenQuoteExpected", new Object[]{atName});
}
fEntityScanner.scanChar();
int entityDepth = fEntityDepth;
int c = fEntityScanner.scanLiteral(quote, value);
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** scanLiteral -> \""
+ value.toString() + "\"");
}
if(fNeedNonNormalizedValue){
fStringBuffer2.clear();
fStringBuffer2.append(value);
}
if(fEntityScanner.whiteSpaceLen > 0)
normalizeWhitespace(value);
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** normalizeWhitespace -> \""
+ value.toString() + "\"");
}
if (c != quote) {
fScanningAttribute = true;
stringBuffer = getStringBuffer();
stringBuffer.clear();
do {
stringBuffer.append(value);
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** value2: \""
+ stringBuffer.toString() + "\"");
}
if (c == '&') {
fEntityScanner.skipChar('&');
if (entityDepth == fEntityDepth && fNeedNonNormalizedValue ) {
fStringBuffer2.append('&');
}
if (fEntityScanner.skipChar('#')) {
if (entityDepth == fEntityDepth && fNeedNonNormalizedValue ) {
fStringBuffer2.append('#');
}
int ch ;
if (fNeedNonNormalizedValue)
ch = scanCharReferenceValue(stringBuffer, fStringBuffer2);
else
ch = scanCharReferenceValue(stringBuffer, null);
if (ch != -1) {
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** value3: \""
+ stringBuffer.toString()
+ "\"");
}
}
} else {
String entityName = fEntityScanner.scanName();
if (entityName == null) {
reportFatalError("NameRequiredInReference", null);
} else if (entityDepth == fEntityDepth && fNeedNonNormalizedValue) {
fStringBuffer2.append(entityName);
}
if (!fEntityScanner.skipChar(';')) {
reportFatalError("SemicolonRequiredInReference",
new Object []{entityName});
} else if (entityDepth == fEntityDepth && fNeedNonNormalizedValue) {
fStringBuffer2.append(';');
}
if (entityName == fAmpSymbol) {
stringBuffer.append('&');
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** value5: \""
+ stringBuffer.toString()
+ "\"");
}
} else if (entityName == fAposSymbol) {
stringBuffer.append('\'');
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** value7: \""
+ stringBuffer.toString()
+ "\"");
}
} else if (entityName == fLtSymbol) {
stringBuffer.append('<');
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** value9: \""
+ stringBuffer.toString()
+ "\"");
}
} else if (entityName == fGtSymbol) {
stringBuffer.append('>');
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** valueB: \""
+ stringBuffer.toString()
+ "\"");
}
} else if (entityName == fQuotSymbol) {
stringBuffer.append('"');
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** valueD: \""
+ stringBuffer.toString()
+ "\"");
}
} else {
if (fEntityStore.isExternalEntity(entityName)) {
reportFatalError("ReferenceToExternalEntity",
new Object[] { entityName });
} else {
if (!fEntityStore.isDeclaredEntity(entityName)) {
//WFC & VC: Entity Declared
if (checkEntities) {
if (fValidation) {
fErrorReporter.reportError(fEntityScanner,XMLMessageFormatter.XML_DOMAIN,
"EntityNotDeclared",
new Object[]{entityName},
XMLErrorReporter.SEVERITY_ERROR);
}
} else {
reportFatalError("EntityNotDeclared",
new Object[]{entityName});
}
}
fEntityManager.startEntity(entityName, true);
}
}
}
} else if (c == '<') {
reportFatalError("LessthanInAttValue",
new Object[] { null, atName });
fEntityScanner.scanChar();
if (entityDepth == fEntityDepth && fNeedNonNormalizedValue) {
fStringBuffer2.append((char)c);
}
} else if (c == '%' || c == ']') {
fEntityScanner.scanChar();
stringBuffer.append((char)c);
if (entityDepth == fEntityDepth && fNeedNonNormalizedValue) {
fStringBuffer2.append((char)c);
}
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** valueF: \""
+ stringBuffer.toString() + "\"");
}
} else if (c == '\n' || c == '\r') {
fEntityScanner.scanChar();
stringBuffer.append(' ');
if (entityDepth == fEntityDepth && fNeedNonNormalizedValue) {
fStringBuffer2.append('\n');
}
} else if (c != -1 && XMLChar.isHighSurrogate(c)) {
if (scanSurrogates(fStringBuffer3)) {
stringBuffer.append(fStringBuffer3);
if (entityDepth == fEntityDepth && fNeedNonNormalizedValue) {
fStringBuffer2.append(fStringBuffer3);
}
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** valueI: \""
+ stringBuffer.toString()
+ "\"");
}
}
} else if (c != -1 && isInvalidLiteral(c)) {
reportFatalError("InvalidCharInAttValue",
new Object[] {Integer.toString(c, 16)});
fEntityScanner.scanChar();
if (entityDepth == fEntityDepth && fNeedNonNormalizedValue) {
fStringBuffer2.append((char)c);
}
}
c = fEntityScanner.scanLiteral(quote, value);
if (entityDepth == fEntityDepth && fNeedNonNormalizedValue) {
fStringBuffer2.append(value);
}
if(fEntityScanner.whiteSpaceLen > 0)
normalizeWhitespace(value);
//Todo ::Move this check to Attributes , do conversion
//only if attribute is being accessed. -Venu
} while (c != quote || entityDepth != fEntityDepth);
stringBuffer.append(value);
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** valueN: \""
+ stringBuffer.toString() + "\"");
}
value.setValues(stringBuffer);
fScanningAttribute = false;
}
if(fNeedNonNormalizedValue)
nonNormalizedValue.setValues(fStringBuffer2);
// quote
int cquote = fEntityScanner.scanChar();
if (cquote != quote) {
reportFatalError("CloseQuoteExpected", new Object[]{atName});
}
} // scanAttributeValue()
/**
* Scans External ID and return the public and system IDs.
*
* @param identifiers An array of size 2 to return the system id,
* and public id (in that order).
* @param optionalSystemId Specifies whether the system id is optional.
*
* <strong>Note:</strong> This method uses fString and fStringBuffer,
* anything in them at the time of calling is lost.
*/
protected void scanExternalID(String[] identifiers,
boolean optionalSystemId)
throws IOException, XNIException {
String systemId = null;
String publicId = null;
if (fEntityScanner.skipString("PUBLIC")) {
if (!fEntityScanner.skipSpaces()) {
reportFatalError("SpaceRequiredAfterPUBLIC", null);
}
scanPubidLiteral(fString);
publicId = fString.toString();
if (!fEntityScanner.skipSpaces() && !optionalSystemId) {
reportFatalError("SpaceRequiredBetweenPublicAndSystem", null);
}
}
if (publicId != null || fEntityScanner.skipString("SYSTEM")) {
if (publicId == null && !fEntityScanner.skipSpaces()) {
reportFatalError("SpaceRequiredAfterSYSTEM", null);
}
int quote = fEntityScanner.peekChar();
if (quote != '\'' && quote != '"') {
if (publicId != null && optionalSystemId) {
// looks like we don't have any system id
// simply return the public id
identifiers[0] = null;
identifiers[1] = publicId;
return;
}
reportFatalError("QuoteRequiredInSystemID", null);
}
fEntityScanner.scanChar();
XMLString ident = fString;
if (fEntityScanner.scanLiteral(quote, ident) != quote) {
fStringBuffer.clear();
do {
fStringBuffer.append(ident);
int c = fEntityScanner.peekChar();
if (XMLChar.isMarkup(c) || c == ']') {
fStringBuffer.append((char)fEntityScanner.scanChar());
} else if (c != -1 && isInvalidLiteral(c)) {
reportFatalError("InvalidCharInSystemID",
new Object[] {Integer.toString(c, 16)});
}
} while (fEntityScanner.scanLiteral(quote, ident) != quote);
fStringBuffer.append(ident);
ident = fStringBuffer;
}
systemId = ident.toString();
if (!fEntityScanner.skipChar(quote)) {
reportFatalError("SystemIDUnterminated", null);
}
}
// store result in array
identifiers[0] = systemId;
identifiers[1] = publicId;
}
/**
* Scans public ID literal.
*
* [12] PubidLiteral ::= '"' PubidChar* '"' | "'" (PubidChar - "'")* "'"
* [13] PubidChar::= #x20 | #xD | #xA | [a-zA-Z0-9] | [-'()+,./:=?;!*#@$_%]
*
* The returned string is normalized according to the following rule,
* from http://www.w3.org/TR/REC-xml#dt-pubid:
*
* Before a match is attempted, all strings of white space in the public
* identifier must be normalized to single space characters (#x20), and
* leading and trailing white space must be removed.
*
* @param literal The string to fill in with the public ID literal.
* @return True on success.
*
* <strong>Note:</strong> This method uses fStringBuffer, anything in it at
* the time of calling is lost.
*/
protected boolean scanPubidLiteral(XMLString literal)
throws IOException, XNIException {
int quote = fEntityScanner.scanChar();
if (quote != '\'' && quote != '"') {
reportFatalError("QuoteRequiredInPublicID", null);
return false;
}
fStringBuffer.clear();
// skip leading whitespace
boolean skipSpace = true;
boolean dataok = true;
while (true) {
int c = fEntityScanner.scanChar();
if (c == ' ' || c == '\n' || c == '\r') {
if (!skipSpace) {
// take the first whitespace as a space and skip the others
fStringBuffer.append(' ');
skipSpace = true;
}
} else if (c == quote) {
if (skipSpace) {
// if we finished on a space let's trim it
fStringBuffer.length--;
}
literal.setValues(fStringBuffer);
break;
} else if (XMLChar.isPubid(c)) {
fStringBuffer.append((char)c);
skipSpace = false;
} else if (c == -1) {
reportFatalError("PublicIDUnterminated", null);
return false;
} else {
dataok = false;
reportFatalError("InvalidCharInPublicID",
new Object[]{Integer.toHexString(c)});
}
}
return dataok;
}
/**
* Normalize whitespace in an XMLString converting all whitespace
* characters to space characters.
*/
protected void normalizeWhitespace(XMLString value) {
int i=0;
int j=0;
int [] buff = fEntityScanner.whiteSpaceLookup;
int buffLen = fEntityScanner.whiteSpaceLen;
int end = value.offset + value.length;
while(i < buffLen){
j = buff[i];
if(j < end ){
value.ch[j] = ' ';
}
i++;
}
}
//
// XMLEntityHandler methods
//
/**
* This method notifies of the start of an entity. The document entity
* has the pseudo-name of "[xml]" the DTD has the pseudo-name of "[dtd]"
* parameter entity names start with '%'; and general entities are just
* specified by their name.
*
* @param name The name of the entity.
* @param identifier The resource identifier.
* @param encoding The auto-detected IANA encoding name of the entity
* stream. This value will be null in those situations
* where the entity encoding is not auto-detected (e.g.
* internal entities or a document entity that is
* parsed from a java.io.Reader).
*
* @throws XNIException Thrown by handler to signal an error.
*/
public void startEntity(String name,
XMLResourceIdentifier identifier,
String encoding, Augmentations augs) throws XNIException {
// keep track of the entity depth
fEntityDepth++;
// must reset entity scanner
fEntityScanner = fEntityManager.getEntityScanner();
fEntityStore = fEntityManager.getEntityStore() ;
} // startEntity(String,XMLResourceIdentifier,String)
/**
* This method notifies the end of an entity. The document entity has
* the pseudo-name of "[xml]" the DTD has the pseudo-name of "[dtd]"
* parameter entity names start with '%'; and general entities are just
* specified by their name.
*
* @param name The name of the entity.
*
* @throws XNIException Thrown by handler to signal an error.
*/
public void endEntity(String name, Augmentations augs) throws IOException, XNIException {
// keep track of the entity depth
fEntityDepth--;
} // endEntity(String)
/**
* Scans a character reference and append the corresponding chars to the
* specified buffer.
*
* <p>
* <pre>
* [66] CharRef ::= '&#' [0-9]+ ';' | '&#x' [0-9a-fA-F]+ ';'
* </pre>
*
* <strong>Note:</strong> This method uses fStringBuffer, anything in it
* at the time of calling is lost.
*
* @param buf the character buffer to append chars to
* @param buf2 the character buffer to append non-normalized chars to
*
* @return the character value or (-1) on conversion failure
*/
protected int scanCharReferenceValue(XMLStringBuffer buf, XMLStringBuffer buf2)
throws IOException, XNIException {
// scan hexadecimal value
boolean hex = false;
if (fEntityScanner.skipChar('x')) {
if (buf2 != null) { buf2.append('x'); }
hex = true;
fStringBuffer3.clear();
boolean digit = true;
int c = fEntityScanner.peekChar();
digit = (c >= '0' && c <= '9') ||
(c >= 'a' && c <= 'f') ||
(c >= 'A' && c <= 'F');
if (digit) {
if (buf2 != null) { buf2.append((char)c); }
fEntityScanner.scanChar();
fStringBuffer3.append((char)c);
do {
c = fEntityScanner.peekChar();
digit = (c >= '0' && c <= '9') ||
(c >= 'a' && c <= 'f') ||
(c >= 'A' && c <= 'F');
if (digit) {
if (buf2 != null) { buf2.append((char)c); }
fEntityScanner.scanChar();
fStringBuffer3.append((char)c);
}
} while (digit);
} else {
reportFatalError("HexdigitRequiredInCharRef", null);
}
}
// scan decimal value
else {
fStringBuffer3.clear();
boolean digit = true;
int c = fEntityScanner.peekChar();
digit = c >= '0' && c <= '9';
if (digit) {
if (buf2 != null) { buf2.append((char)c); }
fEntityScanner.scanChar();
fStringBuffer3.append((char)c);
do {
c = fEntityScanner.peekChar();
digit = c >= '0' && c <= '9';
if (digit) {
if (buf2 != null) { buf2.append((char)c); }
fEntityScanner.scanChar();
fStringBuffer3.append((char)c);
}
} while (digit);
} else {
reportFatalError("DigitRequiredInCharRef", null);
}
}
// end
if (!fEntityScanner.skipChar(';')) {
reportFatalError("SemicolonRequiredInCharRef", null);
}
if (buf2 != null) { buf2.append(';'); }
// convert string to number
int value = -1;
try {
value = Integer.parseInt(fStringBuffer3.toString(),
hex ? 16 : 10);
// character reference must be a valid XML character
if (isInvalid(value)) {
StringBuffer errorBuf = new StringBuffer(fStringBuffer3.length + 1);
if (hex) errorBuf.append('x');
errorBuf.append(fStringBuffer3.ch, fStringBuffer3.offset, fStringBuffer3.length);
reportFatalError("InvalidCharRef",
new Object[]{errorBuf.toString()});
}
} catch (NumberFormatException e) {
// Conversion failed, let -1 value drop through.
// If we end up here, the character reference was invalid.
StringBuffer errorBuf = new StringBuffer(fStringBuffer3.length + 1);
if (hex) errorBuf.append('x');
errorBuf.append(fStringBuffer3.ch, fStringBuffer3.offset, fStringBuffer3.length);
reportFatalError("InvalidCharRef",
new Object[]{errorBuf.toString()});
}
// append corresponding chars to the given buffer
if (!XMLChar.isSupplemental(value)) {
buf.append((char) value);
} else {
// character is supplemental, split it into surrogate chars
buf.append(XMLChar.highSurrogate(value));
buf.append(XMLChar.lowSurrogate(value));
}
// char refs notification code
if (fNotifyCharRefs && value != -1) {
String literal = "#" + (hex ? "x" : "") + fStringBuffer3.toString();
if (!fScanningAttribute) {
fCharRefLiteral = literal;
}
}
return value;
}
// returns true if the given character is not
// valid with respect to the version of
// XML understood by this scanner.
protected boolean isInvalid(int value) {
return (XMLChar.isInvalid(value));
} // isInvalid(int): boolean
// returns true if the given character is not
// valid or may not be used outside a character reference
// with respect to the version of XML understood by this scanner.
protected boolean isInvalidLiteral(int value) {
return (XMLChar.isInvalid(value));
} // isInvalidLiteral(int): boolean
// returns true if the given character is
// a valid nameChar with respect to the version of
// XML understood by this scanner.
protected boolean isValidNameChar(int value) {
return (XMLChar.isName(value));
} // isValidNameChar(int): boolean
// returns true if the given character is
// a valid NCName character with respect to the version of
// XML understood by this scanner.
protected boolean isValidNCName(int value) {
return (XMLChar.isNCName(value));
} // isValidNCName(int): boolean
// returns true if the given character is
// a valid nameStartChar with respect to the version of
// XML understood by this scanner.
protected boolean isValidNameStartChar(int value) {
return (XMLChar.isNameStart(value));
} // isValidNameStartChar(int): boolean
protected boolean versionSupported(String version ) {
return version.equals("1.0") || version.equals("1.1");
} // version Supported
/**
* Scans surrogates and append them to the specified buffer.
* <p>
* <strong>Note:</strong> This assumes the current char has already been
* identified as a high surrogate.
*
* @param buf The StringBuffer to append the read surrogates to.
* @return True if it succeeded.
*/
protected boolean scanSurrogates(XMLStringBuffer buf)
throws IOException, XNIException {
int high = fEntityScanner.scanChar();
int low = fEntityScanner.peekChar();
if (!XMLChar.isLowSurrogate(low)) {
reportFatalError("InvalidCharInContent",
new Object[] {Integer.toString(high, 16)});
return false;
}
fEntityScanner.scanChar();
// convert surrogates to supplemental character
int c = XMLChar.supplemental((char)high, (char)low);
// supplemental character must be a valid XML character
if (isInvalid(c)) {
reportFatalError("InvalidCharInContent",
new Object[]{Integer.toString(c, 16)});
return false;
}
// fill in the buffer
buf.append((char)high);
buf.append((char)low);
return true;
} // scanSurrogates():boolean
/**
* Convenience function used in all XML scanners.
*/
protected void reportFatalError(String msgId, Object[] args)
throws XNIException {
fErrorReporter.reportError(fEntityScanner, XMLMessageFormatter.XML_DOMAIN,
msgId, args,
XMLErrorReporter.SEVERITY_FATAL_ERROR);
}
// private methods
private void init() {
// initialize scanner
fEntityScanner = null;
// initialize vars
fEntityDepth = 0;
fReportEntity = true;
fResourceIdentifier.clear();
if(!fAttributeCacheInitDone){
for(int i = 0; i < initialCacheCount; i++){
attributeValueCache.add(new XMLString());
stringBufferCache.add(new XMLStringBuffer());
}
fAttributeCacheInitDone = true;
}
fStringBufferIndex = 0;
fAttributeCacheUsedCount = 0;
}
XMLStringBuffer getStringBuffer(){
if((fStringBufferIndex < initialCacheCount )|| (fStringBufferIndex < stringBufferCache.size())){
return (XMLStringBuffer)stringBufferCache.get(fStringBufferIndex++);
}else{
XMLStringBuffer tmpObj = new XMLStringBuffer();
fStringBufferIndex++;
stringBufferCache.add(tmpObj);
return tmpObj;
}
}
} // class XMLScanner