xmlstring.hpp

基于属性证书的访问控制源代码,由c++编写,包括openssl,xercesc等

/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999-2003 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: XMLString.hpp,v $
 * Revision 1.23  2003/12/24 15:24:13  cargilld
 * More updates to memory management so that the static memory manager.
 *
 * Revision 1.22  2003/12/17 20:00:49  cargilld
 * Update for memory management so that the static memory manager (one
 * used to call Initialize) is only for static data.
 *
 * Revision 1.21  2003/12/17 00:18:35  cargilld
 * Update to memory management so that the static memory manager (one used to call Initialize) is only for static data.
 *
 * Revision 1.20  2003/10/02 11:07:26  gareth
 * Made the non-memory manager version of replicate not inlined. Updated the documentation for the memory manager versions so they don't tell you you should call release.
 *
 * Revision 1.19  2003/10/01 00:22:20  knoaman
 * Add a lastIndexOf method that takes the string length as one of the params.
 *
 * Revision 1.18  2003/08/25 20:39:47  neilg
 * fix XMLString::findAny(...) docs so that they match what the method actually does (and has done since time immemorial)
 *
 * Revision 1.17  2003/05/18 14:02:05  knoaman
 * Memory manager implementation: pass per instance manager.
 *
 * Revision 1.16  2003/05/15 19:07:46  knoaman
 * Partial implementation of the configurable memory manager.
 *
 * Revision 1.15  2003/04/21 20:07:05  knoaman
 * Performance: use memcpy in moveChars and replicate.
 *
 * Revision 1.14  2003/02/25 16:42:31  tng
 * [Bug 7072] Documentation for XMLString::transcode states invalid return value.
 *
 * Revision 1.13  2003/02/05 18:50:56  tng
 * [Bug 11915] Utility for freeing memory.
 *
 * Revision 1.12  2003/01/24 23:16:33  peiyongz
 * removeWS() added;
 *
 * Revision 1.11  2002/12/20 22:10:21  tng
 * XML 1.1
 *
 * Revision 1.10  2002/12/18 14:17:54  gareth
 * Fix to bug #13438. When you eant a vector that calls delete[] on its members you should use RefArrayVectorOf.
 *
 * Revision 1.9  2002/12/04 02:32:43  knoaman
 * #include cleanup.
 *
 * Revision 1.8  2002/11/05 17:42:39  peiyongz
 * equals( const char* const, const char* const)
 *
 * Revision 1.7  2002/11/04 15:22:05  tng
 * C++ Namespace Support.
 *
 * Revision 1.6  2002/10/01 19:45:22  tng
 * Performance in XMLString::equals, only need to check one string for null as they are equal already.
 *
 * Revision 1.5  2002/09/24 19:41:21  tng
 * New inline function equals that is modified from compareString but simply return true or false.
 *
 * Revision 1.4  2002/09/23 18:42:18  tng
 * DOM L3: Support baseURI.   Add utility fixURI to transform an absolute path filename to standard URI form.
 *
 * Revision 1.3  2002/08/27 19:24:43  peiyongz
 * Bug#12087: patch from Thomas Ford ([e-mail])
 *
 * Revision 1.2  2002/02/20 18:17:02  tng
 * [Bug 5977] Warnings on generating apiDocs.
 *
 * Revision 1.1.1.1  2002/02/01 22:22:16  peiyongz
 * sane_include
 *
 * Revision 1.26  2001/08/10 16:23:06  peiyongz
 * isHex(), isAlphaNum(), isAllWhiteSpace() and patternMatch() Added
 *
 * Revision 1.25  2001/07/06 20:27:57  peiyongz
 * isValidaQName()
 *
 * Revision 1.24  2001/07/04 14:38:20  peiyongz
 * IDDatatypeValidator: created
 * DatatypeValidatorFactory: IDDTV enabled
 * XMLString:isValidName(): to validate Name (XML [4][5])
 *
 * Revision 1.23  2001/06/13 14:07:55  peiyongz
 * isValidaEncName() to validate an encoding name (EncName)
 *
 * Revision 1.22  2001/05/23 15:44:51  tng
 * Schema: NormalizedString fix.  By Pei Yong Zhang.
 *
 * Revision 1.21  2001/05/11 13:26:31  tng
 * Copyright update.
 *
 * Revision 1.20  2001/05/09 18:43:30  tng
 * Add StringDatatypeValidator and BooleanDatatypeValidator.  By Pei Yong Zhang.
 *
 * Revision 1.19  2001/05/03 20:34:35  tng
 * Schema: SchemaValidator update
 *
 * Revision 1.18  2001/05/03 19:17:35  knoaman
 * TraverseSchema Part II.
 *
 * Revision 1.17  2001/03/21 21:56:13  tng
 * Schema: Add Schema Grammar, Schema Validator, and split the DTDValidator into DTDValidator, DTDScanner, and DTDGrammar.
 *
 * Revision 1.16  2001/03/02 20:52:46  knoaman
 * Schema: Regular expression - misc. updates for error messages,
 * and additions of new functions to XMLString class.
 *
 * Revision 1.15  2001/01/15 21:26:34  tng
 * Performance Patches by David Bertoni.
 *
 * Details: (see xerces-c-dev mailing Jan 14)
 * XMLRecognizer.cpp: the internal encoding string XMLUni::fgXMLChEncodingString
 * was going through this function numerous times.  As a result, the top hot-spot
 * for the parse was _wcsicmp().  The real problem is that the Microsofts wide string
 * functions are unbelievably slow.  For things like encodings, it might be
 * better to use a special comparison function that only considers a-z and
 * A-Z as characters with case.  This works since the character set for
 * encodings is limit to printable ASCII characters.
 *
 *  XMLScanner2.cpp: This also has some case-sensitive vs. insensitive compares.
 * They are also much faster.  The other tweak is to only make a copy of an attribute
 * string if it needs to be split.  And then, the strategy is to try to use a
 * stack-based buffer, rather than a dynamically-allocated one.
 *
 * SAX2XMLReaderImpl.cpp: Again, more case-sensitive vs. insensitive comparisons.
 *
 * KVStringPair.cpp & hpp: By storing the size of the allocation, the storage can
 * likely be re-used many times, cutting down on dynamic memory allocations.
 *
 * XMLString.hpp: a more efficient implementation of stringLen().
 *
 * DTDValidator.cpp: another case of using a stack-based buffer when possible
 *
 * These patches made a big difference in parse time in some of our test
 * files, especially the ones are very attribute-heavy.
 *
 * Revision 1.14  2000/10/13 22:47:57  andyh
 * Fix bug (failure to null-terminate result) in XMLString::trim().
 * Patch contributed by Nadav Aharoni
 *
 * Revision 1.13  2000/04/12 18:42:15  roddey
 * Improved docs in terms of what 'max chars' means in the method
 * parameters.
 *
 * Revision 1.12  2000/04/06 19:42:51  rahulj
 * Clarified how big the target buffer should be in the API
 * documentation.
 *
 * Revision 1.11  2000/03/23 01:02:38  roddey
 * Updates to the XMLURL class to correct a lot of parsing problems
 * and to add support for the port number. Updated the URL tests
 * to test some of this new stuff.
 *
 * Revision 1.10  2000/03/20 23:00:46  rahulj
 * Moved the inline definition of stringLen before the first
 * use. This satisfied the HP CC compiler.
 *
 * Revision 1.9  2000/03/02 19:54:49  roddey
 * This checkin includes many changes done while waiting for the
 * 1.1.0 code to be finished. I can't list them all here, but a list is
 * available elsewhere.
 *
 * Revision 1.8  2000/02/24 20:05:26  abagchi
 * Swat for removing Log from API docs
 *
 * Revision 1.7  2000/02/16 18:51:52  roddey
 * Fixed some facts in the docs and reformatted the docs to stay within
 * a reasonable line width.
 *
 * Revision 1.6  2000/02/16 17:07:07  abagchi
 * Added API docs
 *
 * Revision 1.5  2000/02/06 07:48:06  rahulj
 * Year 2K copyright swat.
 *
 * Revision 1.4  2000/01/12 00:16:23  roddey
 * Changes to deal with multiply nested, relative pathed, entities and to deal
 * with the new URL class changes.
 *
 * Revision 1.3  1999/12/18 00:18:10  roddey
 * More changes to support the new, completely orthagonal support for
 * intrinsic encodings.
 *
 * Revision 1.2  1999/12/15 19:41:28  roddey
 * Support for the new transcoder system, where even intrinsic encodings are
 * done via the same transcoder abstraction as external ones.
 *
 * Revision 1.1.1.1  1999/11/09 01:05:52  twl
 * Initial checkin
 *
 * Revision 1.2  1999/11/08 20:45:21  rahul
 * Swat for adding in Product name and CVS comment log variable.
 *
 */

#if !defined(XMLSTRING_HPP)
#define XMLSTRING_HPP

#include <xercesc/util/BaseRefVectorOf.hpp>
#include <xercesc/framework/MemoryManager.hpp>
#include <string.h>

XERCES_CPP_NAMESPACE_BEGIN

class XMLLCPTranscoder;
/**
  * Class for representing native character strings and handling common string
  * operations
  *
  * This class is Unicode compliant. This class is designed primarily
  * for internal use, but due to popular demand, it is being made
  * publicly available. Users of this class must understand that this
  * is not an officially supported class. All public methods of this
  * class are <i>static functions</i>.
  *
  */
class XMLUTIL_EXPORT XMLString
{
public:
    /* Static methods for native character mode string manipulation */


    /** @name String concatenation functions */
    //@{
    /** Concatenates two strings.
      *
      * <code>catString</code> appends <code>src</code> to <code>target</code> and
      * terminates the resulting string with a null character. The initial character
      * of <code>src</code> overwrites the terminating character of <code>target
      * </code>.
      *
      * No overflow checking is performed when strings are copied or appended.
      * The behavior of <code>catString</code> is undefined if source and
      * destination strings overlap.
      *
      * @param target Null-terminated destination string
      * @param src Null-terminated source string
      */
    static void catString
    (
                char* const     target
        , const char* const     src
    );

    /** Concatenates two strings.
      *
      * <code>catString</code> appends <code>src</code> to <code>target</code> and
      * terminates the resulting string with a null character. The initial character of
      * <code>src</code> overwrites the terminating character of <code>target</code>.
      * No overflow checking is performed when strings are copied or appended.
      * The behavior of <code>catString</code> is undefined if source and destination
      * strings overlap.
      *
      *    @param target Null-terminated destination string
      * @param src Null-terminated source string
      */
    static void catString
    (
                XMLCh* const    target
        , const XMLCh* const    src
    );
    //@}

    /** @name String comparison functions */
    //@{
    /** Lexicographically compares lowercase versions of <code>str1</code> and
      * <code>str2</code> and returns a value indicating their relationship.
      * @param str1 Null-terminated string to compare
      * @param str2 Null-terminated string to compare
      *
      * @return The return value indicates the relation of <code>str1</code> to
      * <code>str2</code> as follows
      *  Less than 0 means <code>str1</code> is less than <code>str2</code>
      *  Equal to 0 means <code>str1</code> is identical to <code>str2</code>
      *  Greater than 0 means <code>str1</code> is more than <code>str2</code>
      */
    static int compareIString
    (
        const   char* const     str1
        , const char* const     str2
    );

    /** Lexicographically compares lowercase versions of <code>str1</code> and
      * <code>str2</code> and returns a value indicating their relationship.