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apache / xerces2-j / f59f47412e404f4984480a45a99957ac07d287d4 / . / src / org / apache / xerces / impl / XMLScanner.java
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/*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 1999,2000,2001 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.impl;
import java.io.EOFException;
import java.io.IOException;
import org.apache.xerces.impl.XMLEntityScanner;
import org.apache.xerces.impl.XMLErrorReporter;
import org.apache.xerces.impl.msg.XMLMessageFormatter;
import org.apache.xerces.util.SymbolTable;
import org.apache.xerces.util.XMLStringBuffer;
import org.apache.xerces.util.XMLChar;
import org.apache.xerces.xni.XMLAttributes;
import org.apache.xerces.xni.XMLString;
import org.apache.xerces.xni.XNIException;
import org.apache.xerces.xni.parser.XMLComponent;
import org.apache.xerces.xni.parser.XMLComponentManager;
import org.apache.xerces.xni.parser.XMLConfigurationException;
/**
* 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
*
* @version $Id$
*/
public abstract class XMLScanner
implements XMLComponent {
//
// Constants
//
// feature identifiers
/** 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
/** 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;
//
// Data
//
// features
/**
* Validation. This feature identifier is:
* http://xml.org/sax/features/validation
*/
protected boolean fValidation = false;
/** Character references notification. */
protected boolean fNotifyCharRefs = false;
// properties
/** Symbol table. */
protected SymbolTable fSymbolTable;
/** Error reporter. */
protected XMLErrorReporter fErrorReporter;
/** Entity manager. */
protected XMLEntityManager fEntityManager;
// protected data
/** Entity scanner. */
protected XMLEntityScanner fEntityScanner;
/** Entity depth. */
protected int fEntityDepth;
/** Literal value of the last character refence scanned. */
protected String fCharRefLiteral = null;
/** Scanning attribute. */
protected boolean fScanningAttribute;
// symbols
/** Symbol: "version". */
protected String fVersionSymbol;
/** Symbol: "encoding". */
protected String fEncodingSymbol;
/** Symbol: "standalone". */
protected String fStandaloneSymbol;
/** Symbol: "amp". */
protected String fAmpSymbol;
/** Symbol: "lt". */
protected String fLtSymbol;
/** Symbol: "gt". */
protected String fGtSymbol;
/** Symbol: "quot". */
protected String fQuotSymbol;
/** Symbol: "apos". */
protected String fAposSymbol;
// 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();
//
// 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 {
// Xerces properties
fSymbolTable = (SymbolTable)componentManager.getProperty(SYMBOL_TABLE);
fErrorReporter = (XMLErrorReporter)componentManager.getProperty(ERROR_REPORTER);
fEntityManager = (XMLEntityManager)componentManager.getProperty(ENTITY_MANAGER);
// initialize scanner
fEntityScanner = fEntityManager.getEntityScanner();
// initialize vars
fEntityDepth = 0;
// save built-in entity names
fVersionSymbol = fSymbolTable.addSymbol("version");
fEncodingSymbol = fSymbolTable.addSymbol("encoding");
fStandaloneSymbol = fSymbolTable.addSymbol("standalone");
fAmpSymbol = fSymbolTable.addSymbol("amp");
fLtSymbol = fSymbolTable.addSymbol("lt");
fGtSymbol = fSymbolTable.addSymbol("gt");
fQuotSymbol = fSymbolTable.addSymbol("quot");
fAposSymbol = fSymbolTable.addSymbol("apos");
// sax features
try {
fValidation = componentManager.getFeature(VALIDATION);
}
catch (XMLConfigurationException e) {
fValidation = false;
}
try {
fNotifyCharRefs = componentManager.getFeature(NOTIFY_CHAR_REFS);
}
catch (XMLConfigurationException e) {
fNotifyCharRefs = false;
}
} // reset(XMLComponentManager)
/**
* 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;
}
return;
}
} // 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;
}
}
//
// Protected methods
//
// 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 sawSpace = fEntityScanner.skipSpaces();
while (fEntityScanner.peekChar() != '?') {
String name = scanPseudoAttribute(scanningTextDecl, fString);
switch (state) {
case STATE_VERSION: {
if (name == fVersionSymbol) {
if (!sawSpace) {
reportFatalError(scanningTextDecl
? "SpaceRequiredBeforeVersionInTextDecl"
: "SpaceRequiredBeforeVersionInXMLDecl",
null);
}
version = fString.toString();
state = STATE_ENCODING;
if (!version.equals("1.0")) {
reportFatalError("VersionNotSupported",
new Object[]{version});
}
}
else if (name == 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 == 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 == fStandaloneSymbol) {
if (!sawSpace) {
reportFatalError("SpaceRequiredBeforeStandalone",
null);
}
standalone = fString.toString();
state = STATE_DONE;
if (!standalone.equals("yes") && !standalone.equals("no")) {
reportFatalError("SDDeclInvalid", null);
}
}
else {
reportFatalError("EncodingDeclRequired", null);
}
break;
}
case STATE_STANDALONE: {
if (name == fStandaloneSymbol) {
if (!sawSpace) {
reportFatalError("SpaceRequiredBeforeStandalone",
null);
}
standalone = fString.toString();
state = STATE_DONE;
if (!standalone.equals("yes") && !standalone.equals("no")) {
reportFatalError("SDDeclInvalid", null);
}
}
else {
reportFatalError("EncodingDeclRequired", null);
}
break;
}
default: {
reportFatalError("NoMorePseudoAttributes", null);
}
}
sawSpace = fEntityScanner.skipSpaces();
}
if (scanningTextDecl && state != STATE_DONE) {
reportFatalError("MorePseudoAttributes", 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();
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 (XMLChar.isInvalid(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 ::= '&lt;?' PITarget (S (Char* - (Char* '?>' Char*)))? '?>'
* [17] PITarget ::= Name - (('X' | 'x') ('M' | 'm') ('L' | 'l'))
* </pre>
* <strong>Note:</strong> This method uses fString, anything in it
* at the time of calling is lost.
*/
protected void scanPI() throws IOException, XNIException {
// target
String target = fEntityScanner.scanName();
if (target == null) {
reportFatalError("PITargetRequired", null);
}
// scan data
scanPIData(target, fString);
} // scanPI()
/**
* 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)
*
* <strong>Note:</strong> This method uses fStringBuffer, anything in it
* at the time of calling is lost.
*
* @param target The PI target
* @param data The string to fill in with the data
*/
protected void scanPIData(String target, XMLString 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
data.clear();
return;
}
else {
// if there is data there should be some space
reportFatalError("SpaceRequiredInPI", null);
}
}
// data
if (fEntityScanner.scanData("?>", data)) {
fStringBuffer.clear();
do {
fStringBuffer.append(data);
int c = fEntityScanner.peekChar();
if (c != -1) {
if (XMLChar.isHighSurrogate(c)) {
scanSurrogates(fStringBuffer);
}
else if (XMLChar.isInvalid(c)) {
reportFatalError("InvalidCharInPI",
new Object[]{Integer.toHexString(c)});
fEntityScanner.scanChar();
}
}
} while (fEntityScanner.scanData("?>", data));
fStringBuffer.append(data);
data.setValues(fStringBuffer);
}
} // scanPIData(String,XMLString)
/**
* Scans a comment.
* <p>
* <pre>
* [15] Comment ::= '&lt!--' ((Char - '-') | ('-' (Char - '-')))* '-->'
* </pre>
* <p>
* <strong>Note:</strong> Called after scanning past '&lt;!--'
* <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 {
// text
// REVISIT: handle invalid character, eof
text.clear();
while (fEntityScanner.scanData("--", fString)) {
text.append(fString);
/***/
int c = fEntityScanner.peekChar();
if (c != -1) {
if (XMLChar.isHighSurrogate(c)) {
scanSurrogates(text);
}
if (XMLChar.isInvalid(c)) {
reportFatalError("InvalidCharInComment",
new Object[] { Integer.toHexString(c) });
fEntityScanner.scanChar();
}
}
}
text.append(fString);
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
{
// 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() + "\"");
}
fStringBuffer2.clear();
fStringBuffer2.append(value);
normalizeWhitespace(value);
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** normalizeWhitespace -> \""
+ value.toString() + "\"");
}
if (c != quote) {
fScanningAttribute = true;
fStringBuffer.clear();
do {
fStringBuffer.append(value);
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** value2: \""
+ fStringBuffer.toString() + "\"");
}
if (c == '&') {
fEntityScanner.skipChar('&');
if (entityDepth == fEntityDepth) {
fStringBuffer2.append('&');
}
if (fEntityScanner.skipChar('#')) {
if (entityDepth == fEntityDepth) {
fStringBuffer2.append('#');
}
int ch = scanCharReferenceValue(fStringBuffer, fStringBuffer2);
if (ch != -1) {
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** value3: \""
+ fStringBuffer.toString()
+ "\"");
}
}
}
else {
String entityName = fEntityScanner.scanName();
if (entityName == null) {
reportFatalError("NameRequiredInReference", null);
}
else if (entityDepth == fEntityDepth) {
fStringBuffer2.append(entityName);
}
if (!fEntityScanner.skipChar(';')) {
reportFatalError("SemicolonRequiredInReference",
new Object []{entityName});
}
else if (entityDepth == fEntityDepth) {
fStringBuffer2.append(';');
}
if (entityName == fAmpSymbol) {
fStringBuffer.append('&');
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** value5: \""
+ fStringBuffer.toString()
+ "\"");
}
}
else if (entityName == fAposSymbol) {
fStringBuffer.append('\'');
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** value7: \""
+ fStringBuffer.toString()
+ "\"");
}
}
else if (entityName == fLtSymbol) {
fStringBuffer.append('<');
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** value9: \""
+ fStringBuffer.toString()
+ "\"");
}
}
else if (entityName == fGtSymbol) {
fStringBuffer.append('>');
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** valueB: \""
+ fStringBuffer.toString()
+ "\"");
}
}
else if (entityName == fQuotSymbol) {
fStringBuffer.append('"');
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** valueD: \""
+ fStringBuffer.toString()
+ "\"");
}
}
else {
if (fEntityManager.isExternalEntity(entityName)) {
reportFatalError("ReferenceToExternalEntity",
new Object[] { entityName });
}
else {
if (!fEntityManager.isDeclaredEntity(entityName)) {
//WFC & VC: Entity Declared
if (checkEntities) {
if (fValidation) {
fErrorReporter.reportError(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) {
fStringBuffer2.append((char)c);
}
}
else if (c == '%' || c == ']') {
fEntityScanner.scanChar();
fStringBuffer.append((char)c);
if (entityDepth == fEntityDepth) {
fStringBuffer2.append((char)c);
}
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** valueF: \""
+ fStringBuffer.toString() + "\"");
}
}
else if (c == '\n' || c == '\r') {
fEntityScanner.scanChar();
fStringBuffer.append(' ');
if (entityDepth == fEntityDepth) {
fStringBuffer2.append('\n');
}
}
else if (c != -1 && XMLChar.isHighSurrogate(c)) {
if (scanSurrogates(fStringBuffer3)) {
fStringBuffer.append(fStringBuffer3);
if (entityDepth == fEntityDepth) {
fStringBuffer2.append(fStringBuffer3);
}
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** valueI: \""
+ fStringBuffer.toString()
+ "\"");
}
}
}
else if (c != -1 && XMLChar.isInvalid(c)) {
reportFatalError("InvalidCharInAttValue",
new Object[] {Integer.toString(c, 16)});
fEntityScanner.scanChar();
if (entityDepth == fEntityDepth) {
fStringBuffer2.append((char)c);
}
}
c = fEntityScanner.scanLiteral(quote, value);
if (entityDepth == fEntityDepth) {
fStringBuffer2.append(value);
}
normalizeWhitespace(value);
} while (c != quote || entityDepth != fEntityDepth);
fStringBuffer.append(value);
if (DEBUG_ATTR_NORMALIZATION) {
System.out.println("** valueN: \""
+ fStringBuffer.toString() + "\"");
}
value.setValues(fStringBuffer);
fScanningAttribute = false;
}
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());
}
} 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.
* @returns 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 end = value.offset + value.length;
for (int i = value.offset; i < end; i++) {
int c = value.ch[i];
if (XMLChar.isSpace(c)) {
value.ch[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 publicId The public identifier of the entity if the entity
* is external, null otherwise.
* @param systemId The system identifier of the entity if the entity
* is external, null otherwise.
* @param baseSystemId The base system identifier of the entity if
* the entity is external, null otherwise.
* @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,
String publicId, String systemId,
String baseSystemId,
String encoding) throws XNIException {
// keep track of the entity depth
fEntityDepth++;
} // startEntity(String,String,String,String,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) throws 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;
do {
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);
}
} while (digit);
}
// scan decimal value
else {
fStringBuffer3.clear();
boolean digit = true;
do {
int 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);
}
// 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);
}
catch (NumberFormatException e) {
// let -1 value drop through
}
// character reference must be a valid XML character
if (!XMLChar.isValid(value)) {
reportFatalError("InvalidCharRef",
new Object[]{Integer.toString(value, 16)});
}
// 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;
}
/**
* 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.
* @returns 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 (!XMLChar.isValid(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(XMLMessageFormatter.XML_DOMAIN,
msgId, args,
XMLErrorReporter.SEVERITY_FATAL_ERROR);
}
} // class XMLScanner