author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 18 Jan 2010 20:28:24 +0200 | |
changeset 2 | 661f3784fe57 |
parent 1 | c42dffbd5b4f |
permissions | -rw-r--r-- |
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/* |
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* Licensed to the Apache Software Foundation (ASF) under one or more |
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* contributor license agreements. See the NOTICE file distributed with |
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* this work for additional information regarding copyright ownership. |
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* The ASF licenses this file to You under the Apache License, Version 2.0 |
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* (the "License"); you may not use this file except in compliance with |
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* the License. You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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|
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/* |
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* $Id: Base64.hpp 568078 2007-08-21 11:43:25Z amassari $ |
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*/ |
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#ifndef BASE64_HPP |
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#define BASE64_HPP |
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|
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#include <xercesc/util/XercesDefs.hpp> |
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#include <xercesc/util/XMLUniDefs.hpp> |
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#include <xercesc/framework/MemoryManager.hpp> |
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|
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XERCES_CPP_NAMESPACE_BEGIN |
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|
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// |
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// This class provides encode/decode for RFC 2045 Base64 as |
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// defined by RFC 2045, N. Freed and N. Borenstein. |
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// RFC 2045: Multipurpose Internet Mail Extensions (MIME) |
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// Part One: Format of Internet Message Bodies. Reference |
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// 1996 Available at: http://www.ietf.org/rfc/rfc2045.txt |
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// This class is used by XML Schema binary format validation |
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// |
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// |
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class XMLUTIL_EXPORT Base64 |
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{ |
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public : |
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|
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enum Conformance |
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{ |
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Conf_RFC2045 |
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, Conf_Schema |
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}; |
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|
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//@{ |
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|
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/** |
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* Encodes octets into Base64 data |
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* |
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* NOTE: The returned buffer is dynamically allocated and is the |
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* responsibility of the caller to delete it when not longer needed. |
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* You can call XMLString::release to release this returned buffer. |
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* |
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* If a memory manager is provided, ask the memory manager to de-allocate |
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* the returned buffer. |
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* |
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* @param inputData Binary data in XMLByte stream. |
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* @param inputLength Length of the XMLByte stream. |
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* @param outputLength Length of the encoded Base64 byte stream. |
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* @param memMgr client provided memory manager |
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* @return Encoded Base64 data in XMLByte stream, |
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* or NULL if input data can not be encoded. |
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* @see XMLString::release(XMLByte**) |
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*/ |
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static XMLByte* encode(const XMLByte* const inputData |
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, const unsigned int inputLength |
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, unsigned int* outputLength |
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, MemoryManager* const memMgr = 0); |
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|
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/** |
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* Decodes Base64 data into octets |
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* |
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* NOTE: The returned buffer is dynamically allocated and is the |
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* responsibility of the caller to delete it when not longer needed. |
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* You can call XMLString::release to release this returned buffer. |
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* |
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* If a memory manager is provided, ask the memory manager to de-allocate |
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* the returned buffer. |
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* |
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* @param inputData Base64 data in XMLByte stream. |
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* @param decodedLength Length of decoded XMLByte stream. |
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* @param memMgr client provided memory manager |
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* @param conform conformance specified: if the input data conforms to the |
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* RFC 2045 it is allowed to have any number of whitespace |
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* characters inside; if it conforms to the XMLSchema specs, |
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* it is allowed to have at most one whitespace character |
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* between the quartets |
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* @return Decoded binary data in XMLByte stream, |
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* or NULL if input data can not be decoded. |
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* @see XMLString::release(XMLByte**) |
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*/ |
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static XMLByte* decode( |
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const XMLByte* const inputData |
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, unsigned int* decodedLength |
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, MemoryManager* const memMgr = 0 |
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, Conformance conform = Conf_RFC2045 |
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); |
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|
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/** |
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* Decodes Base64 data into XMLCh |
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* |
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* NOTE: The returned buffer is dynamically allocated and is the |
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* responsibility of the caller to delete it when not longer needed. |
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* You can call XMLString::release to release this returned buffer. |
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* |
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* If a memory manager is provided, ask the memory manager to de-allocate |
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* the returned buffer. |
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* |
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* @param inputData Base64 data in XMLCh stream. |
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* @param decodedLength Length of decoded XMLCh stream |
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* @param memMgr client provided memory manager |
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* @param conform conformance specified: if the input data conforms to the |
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* RFC 2045 it is allowed to have any number of whitespace |
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* characters inside; if it conforms to the XMLSchema specs, |
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* it is allowed to have at most one whitespace character |
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* between the quartets |
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* @return Decoded binary data in XMLCh stream, |
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* or NULL if input data can not be decoded. |
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* @see XMLString::release(XMLCh**) |
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* @deprecated use decodeToXMLByte instead. |
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*/ |
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|
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static XMLCh* decode( |
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const XMLCh* const inputData |
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, unsigned int* decodedLength |
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, MemoryManager* const memMgr = 0 |
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, Conformance conform = Conf_RFC2045 |
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); |
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|
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/** |
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* Decodes Base64 data into octets |
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* |
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* NOTE: The returned buffer is dynamically allocated and is the |
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* responsibility of the caller to delete it when not longer needed. |
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* You can call XMLString::release to release this returned buffer. |
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* |
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* If a memory manager is provided, ask the memory manager to de-allocate |
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* the returned buffer. |
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* |
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* @param inputData Base64 data in XMLCh stream. |
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* @param decodedLength Length of decoded XMLByte stream. |
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* @param memMgr client provided memory manager |
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* @param conform conformance specified: if the input data conforms to the |
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* RFC 2045 it is allowed to have any number of whitespace |
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* characters inside; if it conforms to the XMLSchema specs, |
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* it is allowed to have at most one whitespace character |
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* between the quartets |
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* @return Decoded binary data in XMLByte stream, |
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* or NULL if input data can not be decoded. |
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* @see XMLString::release(XMLByte**) |
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*/ |
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static XMLByte* decodeToXMLByte( |
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const XMLCh* const inputData |
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, unsigned int* decodedLength |
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, MemoryManager* const memMgr = 0 |
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, Conformance conform = Conf_RFC2045 |
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); |
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/** |
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* Get data length |
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* |
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* Returns length of decoded data given an array |
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* containing encoded data. |
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* |
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* @param inputData Base64 data in XMLCh stream. |
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* @param memMgr client provided memory manager |
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* @param conform conformance specified |
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* @return Length of decoded data, |
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* or -1 if input data can not be decoded. |
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*/ |
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static int getDataLength( |
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const XMLCh* const inputData |
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, MemoryManager* const memMgr = 0 |
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, Conformance conform = Conf_RFC2045 |
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); |
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|
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//@} |
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|
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/** |
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* get canonical representation |
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* |
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* Caller is responsible for the proper deallcation |
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* of the string returned. |
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* |
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* @param inputData A string containing the Base64 |
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* @param memMgr client provided memory manager |
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* @param conform conformance specified |
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* |
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* return: the canonical representation of the Base64 |
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* if it is a valid Base64 |
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* 0 otherwise |
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*/ |
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|
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static XMLCh* getCanonicalRepresentation |
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( |
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const XMLCh* const inputData |
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, MemoryManager* const memMgr = 0 |
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, Conformance conform = Conf_RFC2045 |
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); |
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|
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private : |
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|
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// ----------------------------------------------------------------------- |
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// Helper methods |
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// ----------------------------------------------------------------------- |
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static XMLByte* decode( |
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const XMLByte* const inputData |
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, unsigned int* outputLength |
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, XMLByte*& canRepData |
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, MemoryManager* const memMgr = 0 |
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, Conformance conform = Conf_RFC2045 |
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); |
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static void init(); |
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static bool isData(const XMLByte& octet); |
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static bool isPad(const XMLByte& octet); |
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static XMLByte set1stOctet(const XMLByte&, const XMLByte&); |
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static XMLByte set2ndOctet(const XMLByte&, const XMLByte&); |
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static XMLByte set3rdOctet(const XMLByte&, const XMLByte&); |
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static void split1stOctet(const XMLByte&, XMLByte&, XMLByte&); |
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static void split2ndOctet(const XMLByte&, XMLByte&, XMLByte&); |
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static void split3rdOctet(const XMLByte&, XMLByte&, XMLByte&); |
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// ----------------------------------------------------------------------- |
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// Unimplemented constructors and operators |
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// ----------------------------------------------------------------------- |
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Base64(); |
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Base64(const Base64&); |
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// ----------------------------------------------------------------------- |
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// Private data members |
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// |
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// base64Alphabet |
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// The Base64 alphabet (see RFC 2045). |
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// |
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// base64Padding |
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// Padding character (see RFC 2045). |
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// |
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// base64Inverse |
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// Table used in decoding base64. |
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// |
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// isInitialized |
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// Set once base64Inverse is initalized. |
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// |
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// quadsPerLine |
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// Number of quadruplets per one line. The encoded output |
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// stream must be represented in lines of no more |
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// than 19 quadruplets each. |
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// |
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// ----------------------------------------------------------------------- |
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static const XMLByte base64Alphabet[]; |
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static const XMLByte base64Padding; |
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|
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static XMLByte base64Inverse[]; |
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static bool isInitialized; |
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static const unsigned int quadsPerLine; |
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}; |
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// ----------------------------------------------------------------------- |
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// Helper methods |
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// ----------------------------------------------------------------------- |
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inline bool Base64::isPad(const XMLByte& octet) |
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{ |
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return ( octet == base64Padding ); |
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} |
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inline XMLByte Base64::set1stOctet(const XMLByte& b1, const XMLByte& b2) |
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{ |
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return (( b1 << 2 ) | ( b2 >> 4 )); |
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} |
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|
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inline XMLByte Base64::set2ndOctet(const XMLByte& b2, const XMLByte& b3) |
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{ |
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return (( b2 << 4 ) | ( b3 >> 2 )); |
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} |
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|
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inline XMLByte Base64::set3rdOctet(const XMLByte& b3, const XMLByte& b4) |
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{ |
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return (( b3 << 6 ) | b4 ); |
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} |
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|
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inline void Base64::split1stOctet(const XMLByte& ch, XMLByte& b1, XMLByte& b2) { |
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b1 = ch >> 2; |
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b2 = ( ch & 0x3 ) << 4; |
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} |
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|
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inline void Base64::split2ndOctet(const XMLByte& ch, XMLByte& b2, XMLByte& b3) { |
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b2 |= ch >> 4; // combine with previous value |
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b3 = ( ch & 0xf ) << 2; |
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} |
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|
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inline void Base64::split3rdOctet(const XMLByte& ch, XMLByte& b3, XMLByte& b4) { |
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b3 |= ch >> 6; // combine with previous value |
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b4 = ( ch & 0x3f ); |
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} |
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|
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XERCES_CPP_NAMESPACE_END |
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#endif |