| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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. |
| */ |
| |
| // --------------------------------------------------------------------------- |
| // Includes |
| // --------------------------------------------------------------------------- |
| #include <xercesc/util/HexBin.hpp> |
| #include <xercesc/util/XMLUniDefs.hpp> |
| #include <xercesc/util/XMLString.hpp> |
| #include <xercesc/util/Janitor.hpp> |
| |
| XERCES_CPP_NAMESPACE_BEGIN |
| |
| // --------------------------------------------------------------------------- |
| // constants |
| // --------------------------------------------------------------------------- |
| static const int BASELENGTH = 255; |
| |
| // --------------------------------------------------------------------------- |
| // class data member |
| // --------------------------------------------------------------------------- |
| const XMLByte HexBin::hexNumberTable[BASELENGTH] = |
| { |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF |
| }; |
| |
| |
| int HexBin::getDataLength(const XMLCh* const hexData) |
| { |
| if (!isArrayByteHex(hexData)) |
| return -1; |
| |
| return (int)XMLString::stringLen(hexData)/2; |
| } |
| |
| bool HexBin::isArrayByteHex(const XMLCh* const hexData) |
| { |
| if (( hexData == 0 ) || ( *hexData == 0 )) // zero length |
| return true; |
| |
| XMLSize_t strLen = XMLString::stringLen(hexData); |
| if ( strLen%2 != 0 ) |
| return false; |
| |
| for ( XMLSize_t i = 0; i < strLen; i++ ) |
| if( !isHex(hexData[i]) ) |
| return false; |
| |
| return true; |
| } |
| |
| XMLCh* HexBin::getCanonicalRepresentation(const XMLCh* const hexData |
| , MemoryManager* const manager) |
| { |
| |
| if (getDataLength(hexData) == -1) |
| return 0; |
| |
| XMLCh* retStr = XMLString::replicate(hexData, manager); |
| XMLString::upperCaseASCII(retStr); |
| |
| return retStr; |
| } |
| |
| XMLByte* HexBin::decodeToXMLByte(const XMLCh* const hexData |
| , MemoryManager* const manager) |
| { |
| if (( hexData == 0 ) || ( *hexData == 0 )) // zero length |
| return 0; |
| |
| XMLSize_t strLen = XMLString::stringLen(hexData); |
| if ( strLen%2 != 0 ) |
| return 0; |
| |
| //prepare the return string |
| int decodeLength = (int)strLen/2; |
| XMLByte *retVal = (XMLByte*) manager->allocate( (decodeLength + 1) * sizeof(XMLByte)); |
| ArrayJanitor<XMLByte> janFill(retVal, manager); |
| |
| XMLByte temp1, temp2; |
| for( int i = 0; i<decodeLength; i++ ) { |
| temp1 = hexNumberTable[hexData[i*2]]; |
| if (temp1 == (XMLByte) -1) |
| return 0; |
| temp2 = hexNumberTable[hexData[i*2+1]]; |
| if (temp2 == (XMLByte) -1) |
| return 0; |
| retVal[i] = ((temp1 << 4) | temp2); |
| } |
| |
| janFill.release(); |
| retVal[decodeLength] = 0; |
| return retVal; |
| } |
| |
| |
| // ----------------------------------------------------------------------- |
| // Helper methods |
| // ----------------------------------------------------------------------- |
| bool HexBin::isHex(const XMLCh& octet) |
| { |
| // sanity check to avoid out-of-bound index |
| if ( octet >= BASELENGTH ) |
| return false; |
| |
| return (hexNumberTable[octet] != (XMLByte) -1); |
| } |
| |
| XERCES_CPP_NAMESPACE_END |