API Docs for SAX and DOM   Base64.hpp Go to the documentation of this file. /* * Copyright 2001,2004 The Apache Software Foundation. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /* * $Id: Base64.hpp 231219 2005-08-10 12:28:35Z amassari $ */ #ifndef BASE64_HPP #define BASE64_HPP #include <xercesc/util/XercesDefs.hpp> #include <xercesc/util/XMLUniDefs.hpp> #include <xercesc/framework/MemoryManager.hpp> XERCES_CPP_NAMESPACE_BEGIN // // This class provides encode/decode for RFC 2045 Base64 as // defined by RFC 2045, N. Freed and N. Borenstein. // RFC 2045: Multipurpose Internet Mail Extensions (MIME) // Part One: Format of Internet Message Bodies. Reference // 1996 Available at: http://www.ietf.org/rfc/rfc2045.txt // This class is used by XML Schema binary format validation // // class Base64 { public : enum Conformance { Conf_RFC2045 , Conf_Schema }; static XMLByte* encode(const XMLByte* const inputData , const unsigned int inputLength , unsigned int* outputLength , MemoryManager* const memMgr = 0); static XMLByte* decode( const XMLByte* const inputData , unsigned int* decodedLength , MemoryManager* const memMgr = 0 , Conformance conform = Conf_RFC2045 ); static XMLCh* decode( const XMLCh* const inputData , unsigned int* decodedLength , MemoryManager* const memMgr = 0 , Conformance conform = Conf_RFC2045 ); static XMLByte* decodeToXMLByte( const XMLCh* const inputData , unsigned int* decodedLength , MemoryManager* const memMgr = 0 , Conformance conform = Conf_RFC2045 ); static int getDataLength( const XMLCh* const inputData , MemoryManager* const memMgr = 0 , Conformance conform = Conf_RFC2045 ); static XMLCh* getCanonicalRepresentation ( const XMLCh* const inputData , MemoryManager* const memMgr = 0 , Conformance conform = Conf_RFC2045 ); private : // ----------------------------------------------------------------------- // Helper methods // ----------------------------------------------------------------------- static XMLByte* decode( const XMLByte* const inputData , unsigned int* outputLength , XMLByte*& canRepData , MemoryManager* const memMgr = 0 , Conformance conform = Conf_RFC2045 ); static void init(); static bool isData(const XMLByte& octet); static bool isPad(const XMLByte& octet); static XMLByte set1stOctet(const XMLByte&, const XMLByte&); static XMLByte set2ndOctet(const XMLByte&, const XMLByte&); static XMLByte set3rdOctet(const XMLByte&, const XMLByte&); static void split1stOctet(const XMLByte&, XMLByte&, XMLByte&); static void split2ndOctet(const XMLByte&, XMLByte&, XMLByte&); static void split3rdOctet(const XMLByte&, XMLByte&, XMLByte&); // ----------------------------------------------------------------------- // Unimplemented constructors and operators // ----------------------------------------------------------------------- Base64(); Base64(const Base64&); // ----------------------------------------------------------------------- // Private data members // // base64Alphabet // The Base64 alphabet (see RFC 2045). // // base64Padding // Padding character (see RFC 2045). // // base64Inverse // Table used in decoding base64. // // isInitialized // Set once base64Inverse is initalized. // // quadsPerLine // Number of quadruplets per one line. The encoded output // stream must be represented in lines of no more // than 19 quadruplets each. // // ----------------------------------------------------------------------- static const XMLByte base64Alphabet[]; static const XMLByte base64Padding; static XMLByte base64Inverse[]; static bool isInitialized; static const unsigned int quadsPerLine; }; // ----------------------------------------------------------------------- // Helper methods // ----------------------------------------------------------------------- inline bool Base64::isPad(const XMLByte& octet) { return ( octet == base64Padding ); } inline XMLByte Base64::set1stOctet(const XMLByte& b1, const XMLByte& b2) { return (( b1 << 2 ) | ( b2 >> 4 )); } inline XMLByte Base64::set2ndOctet(const XMLByte& b2, const XMLByte& b3) { return (( b2 << 4 ) | ( b3 >> 2 )); } inline XMLByte Base64::set3rdOctet(const XMLByte& b3, const XMLByte& b4) { return (( b3 << 6 ) | b4 ); } inline void Base64::split1stOctet(const XMLByte& ch, XMLByte& b1, XMLByte& b2) { b1 = ch >> 2; b2 = ( ch & 0x3 ) << 4; } inline void Base64::split2ndOctet(const XMLByte& ch, XMLByte& b2, XMLByte& b3) { b2 |= ch >> 4; // combine with previous value b3 = ( ch & 0xf ) << 2; } inline void Base64::split3rdOctet(const XMLByte& ch, XMLByte& b3, XMLByte& b4) { b3 |= ch >> 6; // combine with previous value b4 = ( ch & 0x3f ); } XERCES_CPP_NAMESPACE_END #endif

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