| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 1999-2000 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.ibm.com . For more information |
| * on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| |
| /* |
| * $Log$ |
| * Revision 1.2 2002/02/20 18:17:01 tng |
| * [Bug 5977] Warnings on generating apiDocs. |
| * |
| * Revision 1.1.1.1 2002/02/01 22:21:50 peiyongz |
| * sane_include |
| * |
| * Revision 1.6 2000/12/14 18:49:54 tng |
| * Fix API document generation warning: "Warning: end of member group without matching begin" |
| * |
| * Revision 1.5 2000/02/24 20:00:22 abagchi |
| * Swat for removing Log from API docs |
| * |
| * Revision 1.4 2000/02/15 23:59:06 roddey |
| * More updated documentation of Framework classes. |
| * |
| * Revision 1.3 2000/02/15 01:21:30 roddey |
| * Some initial documentation improvements. More to come... |
| * |
| * Revision 1.2 2000/02/06 07:47:46 rahulj |
| * Year 2K copyright swat. |
| * |
| * Revision 1.1 2000/01/12 00:13:26 roddey |
| * These were moved from internal/ to framework/, which was something that should have |
| * happened long ago. They are really framework type of classes. |
| * |
| * Revision 1.1.1.1 1999/11/09 01:08:10 twl |
| * Initial checkin |
| * |
| * Revision 1.2 1999/11/08 20:44:43 rahul |
| * Swat for adding in Product name and CVS comment log variable. |
| * |
| */ |
| |
| |
| #if !defined(MEMBUFINPUTSOURCE_HPP) |
| #define MEMBUFINPUTSOURCE_HPP |
| |
| #include <xercesc/sax/InputSource.hpp> |
| |
| class BinInputStream; |
| |
| |
| /** |
| * This class is a derivative of the standard InputSource class. It provides |
| * for the parser access to data stored in a memory buffer. The type of |
| * buffer and its host specific attributes are of little concern here. The |
| * only real requirement is that the memory be readable by the current |
| * process. |
| * |
| * Note that the memory buffer size is expressed in <b>bytes</b>, not in |
| * characters. If you pass it text data, you must account for the bytes |
| * per character when indicating the buffer size. |
| * |
| * As with all InputSource derivatives. The primary objective of an input |
| * source is to create an input stream via which the parser can spool in |
| * data from the referenced source. In this case, there are two options |
| * available. |
| * |
| * The passed buffer can be adopted or merely referenced. If it is adopted, |
| * then it must be dynamically allocated and will be destroyed when the |
| * input source is destroyed (no reference counting!.) If not adopted, the |
| * caller must insure that it remains valid until the input source object |
| * is destroyed. |
| * |
| * The other option indicates whether each stream created for this input |
| * source should get its own copy of the data, or whether it should just |
| * stream the data directly from this object's copy of the data. The same |
| * rules apply here, in that the buffer must either be copied by the |
| * stream or it must remain valid until the stream is destroyed. |
| */ |
| class XMLPARSER_EXPORT MemBufInputSource : public InputSource |
| { |
| public : |
| // ----------------------------------------------------------------------- |
| // Constructors and Destructor |
| // ----------------------------------------------------------------------- |
| |
| /** @name Constructors */ |
| //@{ |
| |
| /** |
| * A memory buffer input source is constructed from a buffer of byte |
| * data, and the count of bytes in that buffer. The parser will parse |
| * from this memory buffer until it has eaten the indicated number of |
| * bytes. |
| * |
| * Note that the system id provided serves two purposes. Firstly it is |
| * going to be displayed in error messages as the source of the error. |
| * And secondly, any entities which are refered to from this entity |
| * via relative paths/URLs will be relative to this fake system id. |
| * |
| * @param srcDocBytes The actual data buffer to be parsed from. |
| * @param byteCount The count of bytes (not characters, bytes!) |
| * in the buffer. |
| * @param bufId A fake system id for the buffer. |
| * @param adoptBuffer Indicates whether this object should adopt |
| * the buffer (i.e. make a copy of it) or just |
| * use it in place. |
| */ |
| MemBufInputSource |
| ( |
| const XMLByte* const srcDocBytes |
| , const unsigned int byteCount |
| , const XMLCh* const bufId |
| , const bool adoptBuffer = false |
| ); |
| |
| /** |
| * This constructor is identical to the previous one, except that it takes |
| * the fake system id in local code page form and transcodes it internally. |
| */ |
| MemBufInputSource |
| ( |
| const XMLByte* const srcDocBytes |
| , const unsigned int byteCount |
| , const char* const bufId |
| , const bool adoptBuffer = false |
| ); |
| //@} |
| |
| /** @name Destructor */ |
| //@{ |
| /** |
| * If the buffer was adopted, the copy made during construction is deleted |
| * at this point. |
| */ |
| ~MemBufInputSource(); |
| //@} |
| |
| |
| // ----------------------------------------------------------------------- |
| // Virtual input source interface |
| // ----------------------------------------------------------------------- |
| |
| /** @name Virtual methods */ |
| //@{ |
| |
| /** |
| * This method will return a binary input stream derivative that will |
| * parse from the memory buffer. If setCopyBufToStream() has been set, |
| * then the stream will make its own copy. Otherwise, it will use the |
| * buffer as is (in which case it must remain valid until the stream |
| * is no longer in use, i.e. the parse completes.) |
| * |
| * @return A dynamically allocated binary input stream derivative that |
| * can parse from the memory buffer. |
| */ |
| BinInputStream* makeStream() const; |
| |
| //@} |
| |
| |
| // ----------------------------------------------------------------------- |
| // Setter methods |
| // ----------------------------------------------------------------------- |
| |
| /** @name Setter methods */ |
| |
| //@{ |
| |
| /** |
| * By default, for safety's sake, each newly created stream from this |
| * input source will make its own copy of the buffer to stream from. This |
| * avoids having to deal with aliasing of the buffer for simple work. But, |
| * for higher performance applications or for large buffers, this is |
| * obviously not optimal. |
| * |
| * In such cases, you can call this method to turn off that default |
| * action. Once turned off, the streams will just get a pointer to the |
| * buffer and parse directly from that. In this case, you must insure that |
| * the buffer remains valid for as long as any parse events are still |
| * using it. |
| * |
| * @param newState The new boolean flag state to set. |
| */ |
| void setCopyBufToStream(const bool newState); |
| |
| //@} |
| |
| |
| private : |
| // ----------------------------------------------------------------------- |
| // Private data members |
| // |
| // fAdopted |
| // Indicates whether the buffer is adopted or not. If so, then it |
| // is destroyed when the input source is destroyed. |
| // |
| // fByteCount |
| // The size of the source document. |
| // |
| // fCopyBufToStream |
| // This defaults to true (the safe option), which causes it to |
| // give a copy of the buffer to any streams it creates. If you set |
| // it to false, it will allow the streams to just reference the |
| // buffer (in which case this input source must stay alive as long |
| // as the buffer is in use by the stream.) |
| // |
| // fSrcBytes |
| // The source memory buffer that is being spooled from. Whether it |
| // belongs to the this input source or not is controlled by the |
| // fAdopted flag. |
| // ----------------------------------------------------------------------- |
| bool fAdopted; |
| unsigned int fByteCount; |
| bool fCopyBufToStream; |
| const XMLByte* fSrcBytes; |
| }; |
| |
| |
| inline void MemBufInputSource::setCopyBufToStream(const bool newState) |
| { |
| fCopyBufToStream = newState; |
| } |
| |
| #endif |