// -*- mode:C++; tab-width:2; c-basic-offset:2; indent-tabs-mode:nil -*-
//
// Copyright (C) 2000-2005 by Roger Rene Kommer / artefaktur, Kassel, Germany.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public License (LGPL).
//
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// License ACDK-FreeLicense document enclosed in the distribution
// for more for more details.
// This file is part of the Artefaktur Component Development Kit:
// ACDK
//
// Please refer to
// - http://www.acdk.de
// - http://www.artefaktur.com
// - http://acdk.sourceforge.net
// for more information.
//
// $Header: /cvsroot/acdk/acdk/acdk_xml/src/org/xml/sax/InputSource.h,v 1.12 2005/02/05 10:45:38 kommer Exp $
// Documentation written by David Megginson
// NO WARRANTY! This class documentation is in the Public Domain.
#ifndef org_xml_sax_InputSource_h
#define org_xml_sax_InputSource_h
#include <acdk.h>
#include <acdk/io/Reader.h>
namespace org {
namespace xml {
namespace sax {
ACDK_DECL_CLASS(InputSource);
/**
* A single input source for an XML entity.
*
* <blockquote>
* <em>This module, both source code and documentation, is in the
* Public Domain, and comes with <strong>NO WARRANTY</strong>.</em>
* See <a href='http://www.saxproject.org'>http://www.saxproject.org</a>
* for further information.
* </blockquote>
*
* <p>This class allows a SAX application to encapsulate information
* about an input source in a single object, which may include
* a public identifier, a system identifier, a byte stream (possibly
* with a specified encoding), and/or a character stream.</p>
*
* <p>There are two places that the application can deliver an
* input source to the parser: as the argument to the Parser.parse
* method, or as the return value of the EntityResolver.resolveEntity
* method.</p>
*
* <p>The SAX parser will use the InputSource object to determine how
* to read XML input. If there is a character stream available, the
* parser will read that stream directly, disregarding any text
* encoding declaration found in that stream.
* If there is no character stream, but there is
* a byte stream, the parser will use that byte stream, using the
* encoding specified in the InputSource or else (if no encoding is
* specified) autodetecting the character encoding using an algorithm
* such as the one in the XML specification. If neither a character
* stream nor a
* byte stream is available, the parser will attempt to open a URI
* connection to the resource identified by the system
* identifier.</p>
*
* <p>An InputSource object belongs to the application: the SAX parser
* shall never modify it in any way (it may modify a copy if
* necessary). However, standard processing of both byte and
* character streams is to close them on as part of end-of-parse cleanup,
* so applications should not attempt to re-use such streams after they
* have been handed to a parser. </p>
*
* @since SAX 1.0
* @see org.xml.sax.XMLReader#parse(org.xml.sax.InputSource)
* @see org.xml.sax.EntityResolver#resolveEntity
* @see java.io.InputStream
* @see java.io.Reader
*/
class ACDK_ORG_XML_PUBLIC InputSource
: public acdk::lang::Object
{
ACDK_WITH_METAINFO(InputSource)
private:
::acdk::lang::RString _publicId;
::acdk::lang::RString _systemId;
::acdk::lang::RString _encoding;
::acdk::io::RReader _in;
public:
/**
* Zero-argument default constructor.
*
* @see #setPublicId
* @see #setSystemId
* @see #setByteStream
* @see #setCharacterStream
* @see #setEncoding
*/
InputSource()
: acdk::lang::Object()
{
}
/**
* Create a new input source with a system identifier.
*
* <p>Applications may use setPublicId to include a
* public identifier as well, or setEncoding to specify
* the character encoding, if known.</p>
*
* <p>If the system identifier is a URL, it must be fully
* resolved (it may not be a relative URL).</p>
*
* @param systemId The system identifier (URI).
* @see #setPublicId
* @see #setSystemId
* @see #setByteStream
* @see #setEncoding
* @see #setCharacterStream
*/
InputSource(IN(::acdk::lang::RString) sysId)
: acdk::lang::Object(),
_systemId(sysId)
{
}
/**
* Create a new input source with a byte stream.
*
* <p>Application writers should use setSystemId() to provide a base
* for resolving relative URIs, may use setPublicId to include a
* public identifier, and may use setEncoding to specify the object's
* character encoding.</p>
*
* @param reader The raw byte stream containing the document.
* @see #setPublicId
* @see #setSystemId
* @see #setEncoding
* @see #setByteStream
* @see #setCharacterStream
*/
InputSource(IN(::acdk::io::RReader) reader)
: acdk::lang::Object(),
_in(reader)
{
}
/**
* Set the public identifier for this input source.
*
* <p>The public identifier is always optional: if the application
* writer includes one, it will be provided as part of the
* location information.</p>
*
* @param publicId The public identifier as a string.
* @see #getPublicId
* @see org.xml.sax.Locator#getPublicId
* @see org.xml.sax.SAXParseException#getPublicId
*/
virtual void setPublicId(IN(::acdk::lang::RString) s) { _publicId = s; }
/**
* Get the public identifier for this input source.
*
* @return The public identifier, or null if none was supplied.
* @see #setPublicId
*/
virtual ::acdk::lang::RString getPublicId() { return _publicId; }
/**
* Set the system identifier for this input source.
*
* <p>The system identifier is optional if there is a byte stream
* or a character stream, but it is still useful to provide one,
* since the application can use it to resolve relative URIs
* and can include it in error messages and warnings (the parser
* will attempt to open a connection to the URI only if
* there is no byte stream or character stream specified).</p>
*
* <p>If the application knows the character encoding of the
* object pointed to by the system identifier, it can register
* the encoding using the setEncoding method.</p>
*
* <p>If the system identifier is a URL, it must be fully
* resolved (it may not be a relative URL).</p>
*
* @param systemId The system identifier as a string.
* @see #setEncoding
* @see #getSystemId
* @see org.xml.sax.Locator#getSystemId
* @see org.xml.sax.SAXParseException#getSystemId
*/
virtual void setSystemId(IN(::acdk::lang::RString) s) { _systemId = s; }
/**
* Get the system identifier for this input source.
*
* <p>The getEncoding method will return the character encoding
* of the object pointed to, or null if unknown.</p>
*
* <p>If the system ID is a URL, it will be fully resolved.</p>
*
* @return The system identifier, or null if none was supplied.
* @see #setSystemId
* @see #getEncoding
*/
virtual ::acdk::lang::RString getSystemId() { return _systemId; }
/**
* Set the character encoding, if known.
*
* <p>The encoding must be a string acceptable for an
* XML encoding declaration (see section 4.3.3 of the XML 1.0
* recommendation).</p>
*
* <p>This method has no effect when the application provides a
* character stream.</p>
*
* @param encoding A string describing the character encoding.
* @see #setSystemId
* @see #setByteStream
* @see #getEncoding
*/
virtual void setEncoding(IN(::acdk::lang::RString) s) { _encoding = s; }
/**
* Get the character encoding for a byte stream or URI.
* This value will be ignored when the application provides a
* character stream.
*
* @return The encoding, or null if none was supplied.
* @see #setByteStream
* @see #getSystemId
* @see #getByteStream
*/
virtual ::acdk::lang::RString getEncoding() { return _encoding; }
/**
* Set the byte stream for this input source.
*
* <p>The SAX parser will ignore this if there is also a character
* stream specified, but it will use a byte stream in preference
* to opening a URI connection itself.</p>
*
* <p>If the application knows the character encoding of the
* byte stream, it should set it with the setEncoding method.</p>
*
* @param byteStream A byte stream containing an XML document or
* other entity.
* @see #setEncoding
* @see #getByteStream
* @see #getEncoding
* @see java.io.InputStream
*/
virtual void setByteStream(IN(::acdk::io::RReader) reader) { _in = reader; }
/**
* Get the byte stream for this input source.
*
* <p>The getEncoding method will return the character
* encoding for this byte stream, or null if unknown.</p>
*
* @return The byte stream, or null if none was supplied.
* @see #getEncoding
* @see #setByteStream
*/
virtual ::acdk::io::RReader getByteStream() { return _in; }
};
} // namespace sax
} // namespace xml
} // namespace org
#endif //org_xml_sax_InputSource_h |
2005/5/9
InputSource.h
