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/*
* Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package com.sun.xml.rpc.sp;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
/**
* A demand-driven streaming parser implementation.
*
* @author Zhenghua Li
* @author JAX-RPC RI Development Team
*/
public final class StreamingParserImpl extends StreamingParser {
private Parser parser = null;
private static final int DOC_END = -1,
DOC_START = -2,
EMPTY = -3,
EXCEPTION = -4;
private int cur = EMPTY;
private String curName = null;
private String curValue = null;
private String curURI = null;
private boolean validating;
private boolean coalescing;
private boolean namespaceAware;
private int curLine = -1;
private int curCol = -1;
/* Set once by DocHandler at startup */
private String publicId = null;
private String systemId = null;
/* -- Constructors -- */
private StreamingParserImpl(StreamingParserFactory pf) {
this.validating = pf.isValidating();
this.coalescing = pf.isCoalescing();
this.namespaceAware = pf.isNamespaceAware();
}
StreamingParserImpl(StreamingParserFactory pf, InputStream in) {
this(pf);
this.parser = new Parser(in, coalescing, namespaceAware);
}
StreamingParserImpl(StreamingParserFactory pf, File file)
throws IOException {
this(pf);
this.parser = new Parser(file, coalescing, namespaceAware);
}
/* -- Methods -- */
/**
* Parses the next component of the document being parsed.
*
* @return The parser's current state, one of {@link #START},
* {@link #END}, {@link #ATTR}, {@link #CHARS}, {@link #IWS},
* or {@link #PI}, or -1 if the end of the document has
* been reached
*
* @throws ParseException
* If an XML parsing error occurs
*
* @throws IOException
* If an I/O error occurs
*/
public int parse() throws ParseException, IOException {
if (cur == DOC_END) {
return -1;
} else {
cur = parser.parse();
curName = parser.getCurName();
curValue = parser.getCurValue();
curURI = parser.getCurURI();
curLine = parser.getLineNumber();
curCol = parser.getColumnNumber();
return cur;
}
}
/**
* Returns the current state of the parser.
*
* @return The parser's current state, one of {@link #START},
* {@link #END}, {@link #ATTR}, {@link #CHARS}, {@link #IWS},
* or {@link #PI}, or -1 if the end of the document has
* been reached.
*
* @throws IllegalStateException
* If the parser has yet not been started by invoking the
* {@link #parse} method
*/
public int state() {
if (cur == EMPTY)
throw new IllegalStateException("Parser not started");
if (cur < DOC_END)
throw new InternalError();
return cur;
}
/**
* Returns a name string whose meaning depends upon the current state.
*
* @throws IllegalStateException
* If there is no name data for the current parser state
*/
public String name() {
if (curName == null)
throw new IllegalStateException("Name not defined in this state");
return curName;
}
/**
* Returns a value string whose meaning depends upon the current state.
*
* @throws IllegalStateException
* If there is no value data for the current parser state
*/
public String value() {
if (curValue == null)
throw new IllegalStateException("Value not defined in this state");
return curValue;
}
/**
* Returns the URI string of the current component.
*
* @throws IllegalStateException
* If there is no URI for the current component
*/
public String uriString() {
if (!namespaceAware) {
return null;
} else if (curURI == null) {
throw new IllegalStateException("Value not defined in this state");
}
return curURI;
}
/**
* Returns the line number of the current component,
* or -1 if the line number is not known.
*/
public int line() {
return curLine;
}
/**
* Returns the column number of the current component,
* or -1 if the column number is not known.
*/
public int column() {
return curCol;
}
/**
* Returns the public identifer of the document being parsed,
* or null if it has none.
*/
public String publicId() {
return publicId;
}
/**
* Returns the system identifer of the document being parsed,
* or null if it has none.
*/
public String systemId() {
return systemId;
}
/**
* Returns the validating property of this parser.
*
* @return true if, and only if, this parser
* will perform validation
*/
public boolean isValidating() {
return this.validating;
}
/**
* Returns the coalescing property of this parser.
*
* @return true if, and only if, this parser
* will coalesce adjacent runs of character data
*/
public boolean isCoalescing() {
return this.coalescing;
}
/**
* Returns the namespaceAware property of this parser.
*
* @return true if, and only if, this parser will
* support namespace
*/
public boolean isNamespaceAware() {
return this.namespaceAware;
}
/**
* Constructs a string describing the current state of this parser,
* suitable for use in an error message or an exception detail string.
*
* @param articleNeeded
* Whether an appropriate article ("a", "an", "some", or "the") is
* to be prepended to the description string
*
* @return A string describing the given parser state.
*/
public String describe(boolean articleNeeded) {
return describe(cur, curName, curValue, articleNeeded);
}
}
