source: NonGTP/Xerces/xercesc/util/Transcoders/Uniconv390/XML256TableTranscoder390.hpp @ 188

Revision 188, 7.7 KB checked in by mattausch, 19 years ago (diff)

added xercesc to support

Line 
1/*
2 * The Apache Software License, Version 1.1
3 *
4 * Copyright (c) 2004 The Apache Software Foundation.  All rights
5 * reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in
16 *    the documentation and/or other materials provided with the
17 *    distribution.
18 *
19 * 3. The end-user documentation included with the redistribution,
20 *    if any, must include the following acknowledgment:
21 *       "This product includes software developed by the
22 *        Apache Software Foundation (http://www.apache.org/)."
23 *    Alternately, this acknowledgment may appear in the software itself,
24 *    if and wherever such third-party acknowledgments normally appear.
25 *
26 * 4. The names "Xerces" and "Apache Software Foundation" must
27 *    not be used to endorse or promote products derived from this
28 *    software without prior written permission. For written
29 *    permission, please contact apache\@apache.org.
30 *
31 * 5. Products derived from this software may not be called "Apache",
32 *    nor may "Apache" appear in their name, without prior written
33 *    permission of the Apache Software Foundation.
34 *
35 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
36 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
37 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
38 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
42 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
43 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
44 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
45 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
46 * SUCH DAMAGE.
47 * ====================================================================
48 *
49 * This software consists of voluntary contributions made by many
50 * individuals on behalf of the Apache Software Foundation, and was
51 * originally based on software copyright (c) 1999, International
52 * Business Machines, Inc., http://www.ibm.com .  For more information
53 * on the Apache Software Foundation, please see
54 * <http://www.apache.org/>.
55 */
56
57/*
58 * $Log: XML256TableTranscoder390.hpp,v $
59 * Revision 1.1  2004/02/06 15:02:11  cargilld
60 * Intrinsic transcoding support for 390.
61 *
62 */
63
64#ifndef XML256TABLETRANSCODER_HPP
65#define XML256TABLETRANSCODER_HPP
66
67#include <xercesc/util/TransService.hpp>
68
69XERCES_CPP_NAMESPACE_BEGIN
70
71//
72//  This class implements the functionality of a common type of transcoder
73//  for an 8 bit, single byte encoding based on a set of 'to' and 'from'
74//  translation tables. Actual derived classes are trivial and just have to
75//  provide us with pointers to their tables and we do all the work.
76//
77class XMLUTIL_EXPORT XML256TableTranscoder390 : public XMLTranscoder
78{
79public :
80    // -----------------------------------------------------------------------
81    //  Public constructors and destructor
82    // -----------------------------------------------------------------------
83    virtual ~XML256TableTranscoder390();
84
85
86    // -----------------------------------------------------------------------
87    //  The virtual transcoding interface
88    // -----------------------------------------------------------------------
89    virtual unsigned int transcodeFrom
90    (
91        const   XMLByte* const          srcData
92        , const unsigned int            srcCount
93        ,       XMLCh* const            toFill
94        , const unsigned int            maxChars
95        ,       unsigned int&           bytesEaten
96        ,       unsigned char* const    charSizes
97    );
98
99    virtual unsigned int transcodeTo
100    (
101        const   XMLCh* const    srcData
102        , const unsigned int    srcCount
103        ,       XMLByte* const  toFill
104        , const unsigned int    maxBytes
105        ,       unsigned int&   charsEaten
106        , const UnRepOpts       options
107    );
108
109    virtual bool canTranscodeTo
110    (
111        const   unsigned int    toCheck
112    )   const;
113
114
115protected :
116    // -----------------------------------------------------------------------
117    //  Hidden constructors
118    // -----------------------------------------------------------------------
119    XML256TableTranscoder390
120    (
121        const   XMLCh* const                        encodingName
122        , const unsigned int                        blockSize
123        , const XMLCh* const                        fromTable
124        , const XMLTransService::TransRec* const    toTable
125        , const unsigned int                        toTableSize
126        , MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager
127    );
128
129
130    // -----------------------------------------------------------------------
131    //  Protected helper methods
132    // -----------------------------------------------------------------------
133    XMLByte xlatOneTo
134    (
135        const   XMLCh       toXlat
136    )   const;
137
138
139private :
140    // -----------------------------------------------------------------------
141    //  Unimplemented constructors and operators
142    // -----------------------------------------------------------------------
143    XML256TableTranscoder390();
144    XML256TableTranscoder390(const XML256TableTranscoder390&);
145    XML256TableTranscoder390& operator=(const XML256TableTranscoder390&);
146
147
148    // -----------------------------------------------------------------------
149    //  Private data members
150    //
151    //  fFromTable
152    //      This is the 'from' table that we were given during construction.
153    //      It is a 256 entry table of XMLCh chars. Each entry is the
154    //      Unicode code point for the external encoding point of that value.
155    //      So fFromTable[N] is the Unicode translation of code point N of
156    //      the source encoding.
157    //
158    //      We don't own this table, we just refer to it. It is assumed that
159    //      the table is static, for performance reasons.
160    //
161    //  fToSize
162    //      The 'to' table is variable sized. This indicates how many records
163    //      are in it.
164    //
165    //  fToTable
166    //      This is a variable sized table of TransRec structures. It must
167    //      be sorted by the intCh field, i.e. the XMLCh field. It is searched
168    //      binarily to find the record for a particular Unicode char. Then
169    //      that record's extch field is the translation record.
170    //
171    //      We don't own this table, we just refer to it. It is assumed that
172    //      the table is static, for performance reasons.
173    //
174    //      NOTE: There may be dups of the extCh field, since there might be
175    //      multiple Unicode code points which map to the same external code
176    //      point. Normally this won't happen, since the parser assumes that
177    //      internalization is normalized, but we have to be prepared to do
178    //      the right thing if some client code gives us non-normalized data
179    //      itself.
180    // -----------------------------------------------------------------------
181    const XMLCh*                        fFromTable;
182    unsigned int                        fToSize;
183    const XMLTransService::TransRec*    fToTable;
184};
185
186XERCES_CPP_NAMESPACE_END
187
188#endif
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