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This commit is contained in:
Sean Kessler (Europa)
2024-08-07 09:16:27 -04:00
parent fdfadd5c7e
commit 5f971cf684
5200 changed files with 731717 additions and 0 deletions
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72
guitar/uutool.cpp Normal file
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#include <guitar/uutool.hpp>
#include <common/string.hpp>
#include <common/stdio.hpp>
String UUTool::encode(String strLine)
{
int stringLength=strLine.length();
char *ptrBuff;
int byteCount;
if(!stringLength)return String();
String lineString;
char *ptrLine=lineString.str();
*(ptrLine++)=chEncode(stringLength);
for(ptrBuff=strLine.str(),byteCount=stringLength;byteCount>0;byteCount-=3,ptrBuff+=3)
{
*(ptrLine++)=chEncode(*ptrBuff>>2);
*(ptrLine++)=chEncode((*ptrBuff<<4)&0x30|(ptrBuff[1]>>4)&0x0F);
*(ptrLine++)=chEncode((ptrBuff[1]<<2)&0x3C|(ptrBuff[2]>>6)&0x03);
*(ptrLine++)=chEncode(ptrBuff[2]&0x3F);
}
return lineString;
}
String UUTool::decode(String strLine)
{
int stringLength=strLine.length();
char *ptrBuff;
char *ptrLine;
int byteCount;
int n;
char ch;
if(!stringLength)return String();
String lineString;
ptrLine=lineString.str();
ptrBuff=strLine.str();
n=chDecode(*(ptrBuff));
if(n<=0)return String();
for(++ptrBuff;n>0;ptrBuff+=4,n-=3)
{
if(n>=3)
{
ch=chDecode(ptrBuff[0])<<2|chDecode(ptrBuff[1])>>4;
*(ptrLine++)=ch;
ch=chDecode(ptrBuff[1])<<4|chDecode(ptrBuff[2])>>2;
*(ptrLine++)=ch;
ch=chDecode(ptrBuff[2])<<6|chDecode(ptrBuff[3]);
*(ptrLine++)=ch;
}
else
{
if(n>=1)
{
ch=chDecode(ptrBuff[0])<<2|chDecode(ptrBuff[1])>>4;
(*ptrLine++)=ch;
}
else if(n>=2)
{
ch=chDecode(ptrBuff[1])<<4|chDecode(ptrBuff[2])>>2;
(*ptrLine++)=ch;
}
else if(n>=3)
{
ch=chDecode(ptrBuff[2])<<6|chDecode(ptrBuff[3]);
(*ptrLine++)=ch;
}
}
}
return lineString;
}