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UUCode.cpp
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UUCode.cpp
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// UUCode.cpp - Part of Helix
// Copyright (c) 2002 by Tom Weatherhead. All rights reserved.
// Started December 14, 2002
#include "Common.h"
void UUEncode( char * pSrcFilename, FILE * pSrcFile, FILE * pDstFile )
{
char acTable[64];
int i;
acTable[0] = '`'; // We could use a space instead.
for( i = 1; i < 64; ++i )
{
acTable[i] = (char)( i + 32 );
}
Assert( pSrcFilename != 0 );
for( i = strlen( pSrcFilename ); i > 0 && pSrcFilename[i - 1] != '\\'; --i )
{
}
Assert( strlen( pSrcFilename + i ) > 0 );
fprintf( pDstFile, "begin 664 %s\n", pSrcFilename + i );
while( !feof( pSrcFile ) )
{
unsigned char aucSrcData[45];
const int knBytesRead = fread( aucSrcData, 1, 45, pSrcFile );
fputc( acTable[knBytesRead], pDstFile );
for( i = 0; i < knBytesRead; i += 3 )
{
const unsigned int k = (unsigned int)aucSrcData[i] + ( (unsigned int)aucSrcData[i + 1] << 8 ) + ( (unsigned int)aucSrcData[i + 2] << 16 );
fputc( acTable[k & 63], pDstFile );
fputc( acTable[(k >> 6) & 63], pDstFile );
fputc( acTable[(k >> 12) & 63], pDstFile );
fputc( acTable[k >> 18], pDstFile );
}
fputc( '\n', pDstFile );
}
//fprintf( pDstFile, "`\n" );
fprintf( pDstFile, "end\n" );
}
bool UUDecode( FILE * pSrcFile )
{
FILE * pDstFile = 0;
while( !feof( pSrcFile ) )
{
// Get a line of the src text file.
char acSrcData[128];
fgets( acSrcData, sizeof( acSrcData ), pSrcFile );
// Truncate any appended newline:
acSrcData[sizeof( acSrcData ) - 1] = '\0';
if( acSrcData[strlen( acSrcData ) - 1] == '\n' )
{
acSrcData[strlen( acSrcData ) - 1] = '\0';
}
if( strlen( acSrcData ) == 0 )
{
// continue;
}
else if( !memcmp( acSrcData, "begin", 5 ) && strlen( acSrcData ) > 10 && pDstFile == 0 )
{
pDstFile = fopen( acSrcData + 10, "wb" );
}
else if( pDstFile == 0 )
{
// continue;
}
else if( !memcmp( acSrcData, "end", 3 ) )
{
fclose( pDstFile );
return( true );
}
else if( acSrcData[0] > 32 && acSrcData[0] <= 77 )
{
const int knBytesToWrite = (int)( acSrcData[0] - 32 );
char acDstData[45];
int nDstIndex = 0;
for( int i = 1; i < strlen( acSrcData ); i += 4 )
{
int j;
int anSrc1[4];
for( j = 0; j < 4; ++j )
{
const char c = acSrcData[i + j];
if( c < 32 || c > 96 )
{
break;
}
anSrc1[j] = (int)( ( c - 32 ) & 63 );
}
for( ; j < 4; ++j )
{
anSrc1[j] = 0;
}
int k = 0;
for( j = 0; j < 4; ++j )
{
k |= ( anSrc1[j] << ( j * 6 ) );
}
for( j = 0; j < 3; ++j )
{
acDstData[nDstIndex++] = (char)( k >> ( j * 8 ) );
}
}
fwrite( acDstData, 1, knBytesToWrite, pDstFile );
}
}
if( pDstFile != 0 )
{
fclose( pDstFile ); // Dst file truncated?
}
return( false ); // No "end" found.
}
// **** End of File ****