Base64 encoding and decoding added
This commit is contained in:
Sascha Ballach
parent
9bc5ada674
commit
451e3ce99f
1 changed files with 175 additions and 2 deletions
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@ -2,9 +2,9 @@
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*
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* $RCSfile: xmluconv.cxx,v $
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*
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* $Revision: 1.7 $
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* $Revision: 1.8 $
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*
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* last change: $Author: cl $ $Date: 2001-02-15 17:32:58 $
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* last change: $Author: sab $ $Date: 2001-02-22 17:41:08 $
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*
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* The Contents of this file are made available subject to the terms of
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* either of the following licenses
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@ -108,6 +108,7 @@
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#endif
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using namespace rtl;
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using namespace com::sun::star;
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const sal_Int8 XML_MAXDIGITSCOUNT_TIME = 11;
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const sal_Int8 XML_MAXDIGITSCOUNT_DATETIME = 6;
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@ -1358,3 +1359,175 @@ void SvXMLUnitConverter::convertVector3D( OUStringBuffer &rBuffer,
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rBuffer.append(sal_Unicode(')'));
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}
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const
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sal_Char aBase64EncodeTable[] =
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{ 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
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'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
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'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
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'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
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'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/' };
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const
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sal_uInt8 aBase64DecodeTable[] =
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{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0-15
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 16-31
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 62, 0, 0, 0, 63, // 32-47
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// + /
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52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 0, 0, 0, 0, 0, 0, // 48-63
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// 0 1 2 3 4 5 6 7 8 9 =
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0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, // 64-79
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// A B C D E F G H I J K L M N O
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15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 0, 0, 0, 0, 0, // 80-95
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// P Q R S T U V W X Y Z
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0, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, // 96-111
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// a b c d e f g h i j k l m n o
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41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 0, 0, 0, 0, 0, // 112-127
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// p q r s t u v w x y z
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
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void ThreeByteToFourByte (const sal_uInt8* pBuffer, const sal_Int32 nStart, const sal_Int32 nFullLen, rtl::OUStringBuffer& sBuffer)
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{
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sal_Int32 nLen(nFullLen - nStart);
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if (nLen > 3)
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nLen = 3;
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if ((nLen == 0))
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{
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sBuffer.setLength(0);
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return;
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}
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sal_Int32 nBinaer;
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switch (nLen)
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{
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case 1:
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{
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nBinaer = pBuffer[nStart + 0] << 16;
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}
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break;
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case 2:
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{
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nBinaer = (pBuffer[nStart + 0] << 16) +
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(pBuffer[nStart + 1] << 8);
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}
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break;
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default:
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{
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nBinaer = (pBuffer[nStart + 0] << 16) +
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(pBuffer[nStart + 1] << 8) +
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pBuffer[nStart + 2];
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}
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break;
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}
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sBuffer.appendAscii("====");
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sal_uInt8 nIndex ((nBinaer & 0xFC0000) >> 18);
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sBuffer.setCharAt(0, aBase64EncodeTable [nIndex]);
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nIndex = (nBinaer & 0x3F000) >> 12;
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sBuffer.setCharAt(1, aBase64EncodeTable [nIndex]);
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if (nLen == 1)
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return;
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nIndex = (nBinaer & 0xFC0) >> 6;
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sBuffer.setCharAt(2, aBase64EncodeTable [nIndex]);
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if (nLen == 2)
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return;
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nIndex = (nBinaer & 0x3F);
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sBuffer.setCharAt(3, aBase64EncodeTable [nIndex]);
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}
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void SvXMLUnitConverter::encodeBase64(rtl::OUStringBuffer& aStrBuffer, const uno::Sequence<sal_uInt8>& aPass)
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{
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sal_Int32 i(0);
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sal_Int32 nBufferLength(aPass.getLength());
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const sal_uInt8* pBuffer = aPass.getConstArray();
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while (i < nBufferLength)
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{
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rtl::OUStringBuffer sBuffer;
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ThreeByteToFourByte (pBuffer, i, nBufferLength, sBuffer);
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aStrBuffer.append(sBuffer);
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i += 3;
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}
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}
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const rtl::OUString s2equal(RTL_CONSTASCII_USTRINGPARAM("=="));
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const rtl::OUString s1equal(RTL_CONSTASCII_USTRINGPARAM("="));
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void FourByteToThreeByte (sal_uInt8* pBuffer, sal_Int32& nLength, const sal_Int32 nStart, const rtl::OUString& sString)
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{
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nLength = 0;
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sal_Int32 nLen (sString.getLength());
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if (nLen != 4)
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{
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DBG_ERROR("wrong length");
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return;
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}
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if (sString.indexOf(s2equal) == 2)
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nLength = 1;
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else if (sString.indexOf(s1equal) == 3)
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nLength = 2;
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else
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nLength = 3;
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sal_Int32 nBinaer ((aBase64DecodeTable [sString [0]] << 18) +
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(aBase64DecodeTable [sString [1]] << 12) +
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(aBase64DecodeTable [sString [2]] << 6) +
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(aBase64DecodeTable [sString [3]]));
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sal_uInt8 OneByte ((nBinaer & 0xFF0000) >> 16);
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pBuffer[nStart + 0] = OneByte;
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if (nLength == 1)
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return;
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OneByte = (nBinaer & 0xFF00) >> 8;
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pBuffer[nStart + 1] = OneByte;
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if (nLength == 2)
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return;
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OneByte = nBinaer & 0xFF;
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pBuffer[nStart + 2] = OneByte;
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}
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void SvXMLUnitConverter::decodeBase64(uno::Sequence<sal_uInt8>& aBuffer, const rtl::OUString& sBuffer)
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{
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sal_Int32 nFirstLength((sBuffer.getLength() / 4) * 3);
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sal_uInt8* pBuffer = new sal_uInt8[nFirstLength];
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sal_Int32 nSecondLength(0);
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sal_Int32 nLength(0);
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sal_Int32 i = 0;
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sal_Int32 k = 0;
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while (i < sBuffer.getLength())
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{
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FourByteToThreeByte (pBuffer, nLength, k, sBuffer.copy(i, 4));
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nSecondLength += nLength;
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nLength = 0;
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i += 4;
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k += 3;
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}
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aBuffer = uno::Sequence<sal_uInt8>(pBuffer, nSecondLength);
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delete[] pBuffer;
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}
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