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// Cryptographic API Base
#include <config.h>
#include <apt-pkg/fileutl.h>
#include "hashsum_template.h"
#include <algorithm>
#include <unistd.h>
// Summation::AddFD - Add content of file into the checksum /*{{{*/
// ---------------------------------------------------------------------
/* */
bool SummationImplementation::AddFD(int const Fd, unsigned long long Size) {
unsigned char Buf[64 * 64];
bool const ToEOF = (Size == 0);
while (Size != 0 || ToEOF)
{
unsigned long long n = sizeof(Buf);
if (!ToEOF) n = std::min(Size, n);
ssize_t const Res = read(Fd, Buf, n);
if (Res < 0 || (!ToEOF && Res != (ssize_t) n)) // error, or short read
return false;
if (ToEOF && Res == 0) // EOF
break;
Size -= Res;
Add(Buf,Res);
}
return true;
}
bool SummationImplementation::AddFD(FileFd &Fd, unsigned long long Size) {
unsigned char Buf[64 * 64];
bool const ToEOF = (Size == 0);
while (Size != 0 || ToEOF)
{
unsigned long long n = sizeof(Buf);
if (!ToEOF) n = std::min(Size, n);
unsigned long long a = 0;
if (Fd.Read(Buf, n, &a) == false) // error
return false;
if (ToEOF == false)
{
if (a != n) // short read
return false;
}
else if (a == 0) // EOF
break;
Size -= a;
Add(Buf, a);
}
return true;
}
/*}}}*/
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