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authorMichele Calgaro <michele.calgaro@yahoo.it>2020-12-08 12:30:30 +0900
committerMichele Calgaro <michele.calgaro@yahoo.it>2020-12-08 12:30:30 +0900
commit7ec5a57fc3f04526f36477e22066199372beb0ee (patch)
treef46ff23820fcfbf612070cce46b7496bc766a9fd /khexedit/hexclipboard.cpp
parent062ea53b46c9b76c78fcde2fb0df8b2411af3f39 (diff)
downloadtdeutils-7ec5a57fc3f04526f36477e22066199372beb0ee.tar.gz
tdeutils-7ec5a57fc3f04526f36477e22066199372beb0ee.zip
Renaming of files in preparation for code style tools.
Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
Diffstat (limited to 'khexedit/hexclipboard.cpp')
-rw-r--r--khexedit/hexclipboard.cpp254
1 files changed, 254 insertions, 0 deletions
diff --git a/khexedit/hexclipboard.cpp b/khexedit/hexclipboard.cpp
new file mode 100644
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--- /dev/null
+++ b/khexedit/hexclipboard.cpp
@@ -0,0 +1,254 @@
+/*
+ * khexedit - Versatile hex editor
+ * Copyright (C) 1999 Espen Sand, espensa@online.no
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+//
+// This is a VERY crude implementation, which serves my requirements and
+// nothing more.
+//
+
+
+#include <string.h>
+#include "hexclipboard.h"
+
+
+static const uchar *base64EncodeTable( void )
+{
+ static uchar table[64] =
+ {
+ 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
+ 'Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f',
+ 'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v',
+ 'w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/',
+ };
+
+ return( table );
+}
+
+static const uchar *base64DecodeTable( void )
+{
+ static uchar table[255];
+ static bool init = false;
+ if( init == false )
+ {
+ uint i;
+ for( i = 0; i < 255; i++ ) { table[i] = 0x80; }
+ for( i = 'A'; i <= 'Z'; i++ ) { table[i] = 0 + (i - 'A'); }
+ for( i = 'a'; i <= 'z'; i++ ) { table[i] = 26 + (i - 'a'); }
+ for( i = '0'; i <= '9'; i++ ) { table[i] = 52 + (i - '0'); }
+ table[(uchar)'+'] = 62;
+ table[(uchar)'/'] = 63;
+ table[(uchar)'='] = 0;
+ init = true;
+ }
+ return( table );
+}
+
+
+static const char *mimeHeader( void )
+{
+ static const char *data =
+ "Content-Type: application/octet-stream; " \
+ "name=\"khexedit_copy\"\r\n" \
+ "Content-Transfer-Encoding: base64\r\n\r\n";
+ return( data );
+}
+
+
+
+
+
+
+
+
+CHexClipboard::CHexClipboard( void )
+{
+}
+
+
+CHexClipboard::~CHexClipboard( void )
+{
+}
+
+
+bool CHexClipboard::encode( TQByteArray &dst, TQByteArray &src )
+{
+ if( src.size() == 0 )
+ {
+ return( false );
+ }
+
+ uint srcSize = src.size();
+ uint mimeSize = strlen( mimeHeader() );
+ uint lineSize = 72;
+ uint dstSize = (srcSize / 3 + (srcSize % 3 ? 1 : 0)) * 4;
+ dstSize += ((dstSize/lineSize) + 1)*2 + 1;
+
+ dst.resize( dstSize + mimeSize + 1 );
+ if( dst.isNull() == true )
+ {
+ return( false );
+ }
+
+ unsigned char inBuf[3], outBuf[4];
+ uint lineLen = 0;
+
+ memcpy( dst.data(), mimeHeader(), mimeSize );
+ uint j = mimeSize;
+
+
+ const uchar *table = base64EncodeTable();
+ for( uint i=0; i < srcSize; i += 3 )
+ {
+ memset( inBuf, 0, sizeof(inBuf) );
+ uint n;
+ for( n=0; n < 3; n++ )
+ {
+ if( i+n >= srcSize )
+ {
+ break;
+ }
+ inBuf[n] = src[i+n];
+ }
+
+ if( n > 0 )
+ {
+ outBuf[0] = table[ inBuf[0] >> 2 ];
+ outBuf[1] = table[ ((inBuf[0] & 0x3) << 4) | (inBuf[1] >> 4) ];
+ outBuf[2] = table[ ((inBuf[1] & 0xF) << 2) | (inBuf[2] >> 6) ];
+ outBuf[3] = table[ inBuf[2] & 0x3F ];
+
+ if( n < 3 )
+ {
+ outBuf[3] = '=';
+ if( n < 2 )
+ {
+ outBuf[2] = '=';
+ }
+ }
+
+ for( uint m=0; m<4; m++ )
+ {
+ if( lineLen >= lineSize )
+ {
+ dst[j++] = '\r';
+ dst[j++] = '\n';
+ lineLen = 0;
+ }
+ dst[j++] = outBuf[m];
+ lineLen += 1;
+ }
+ }
+ }
+ dst[j++] = '\r';
+ dst[j++] = '\n';
+ dst[j++] = '\0';
+ return( true );
+}
+
+
+
+
+bool CHexClipboard::decode( TQByteArray &dst, TQString &src )
+{
+ uint mimeSize = strlen( mimeHeader() );
+ if( src.length() <= mimeSize )
+ {
+ return( plainDecode( dst, src ) );
+ }
+
+ if( memcmp( src.ascii(), mimeHeader(), mimeSize ) != 0 )
+ {
+ return( plainDecode( dst, src ) );
+ }
+
+ uint srcSize = src.length();
+ uint dstSize = (srcSize * 3) / 4;
+ uchar srcBuf[4], valBuf[4], dstBuf[3];
+ uint sumElement = 0;
+
+ dst.resize( dstSize );
+ if( dst.isNull() == true )
+ {
+ return( plainDecode( dst, src ) );
+ }
+
+ uint i,j;
+ uint n = 0;
+
+ const uchar *table = base64DecodeTable();
+ for( i=mimeSize; i<srcSize; )
+ {
+ for( j=0; j<4; )
+ {
+ if( i >= srcSize )
+ {
+ dst.truncate( sumElement );
+ return( j > 0 ? false : true );
+ }
+
+ int c = src[i++].latin1();
+ if( c <= ' ' )
+ {
+ continue;
+ }
+ if( table[c] & 0x80 )
+ {
+ return( plainDecode( dst, src ) );
+ }
+
+ srcBuf[j] = c;
+ valBuf[j] = table[c];
+ j++;
+ }
+
+ dstBuf[0] = (valBuf[0] << 2) | (valBuf[1] >> 4);
+ dstBuf[1] = (valBuf[1] << 4) | (valBuf[2] >> 2);
+ dstBuf[2] = (valBuf[2] << 6) | (valBuf[3]);
+
+ uint numElement = srcBuf[2] == '=' ? 1 : (srcBuf[3] == '=' ? 2 : 3);
+ for( uint m=0; m < numElement; m++ )
+ {
+ dst[n++] = dstBuf[m];
+ }
+ sumElement += numElement;
+
+ if( numElement < 3 )
+ {
+ break;
+ }
+ }
+
+ dst.truncate( sumElement );
+ return( true );
+}
+
+
+bool CHexClipboard::plainDecode( TQByteArray &dst, TQString &src )
+{
+ dst.resize( src.length() );
+ if( dst.isNull() == true )
+ {
+ return( false );
+ }
+
+ for( uint i=0; i < src.length(); dst[i] = src[i].latin1(), i++ );
+ return( true );
+}
+