| | 1 | // Cryptographic API Base |
| | 2 | #include <config.h> |
| | 3 | |
| | 4 | #include <apt-pkg/fileutl.h> |
| | 5 | |
| | 6 | #include <algorithm> |
| | 7 | #include <unistd.h> |
| | 8 | #include "hashsum_template.h" |
| | 9 | |
| | 10 | // Summation::AddFD - Add content of file into the checksum /*{{{*/ |
| | 11 | // --------------------------------------------------------------------- |
| | 12 | /* */ |
| | 13 | bool SummationImplementation::AddFD(int const Fd, unsigned long long Size) { |
| | 14 | unsigned char Buf[64 * 64]; |
| | 15 | bool const ToEOF = (Size == 0); |
| | 16 | while (Size != 0 || ToEOF) |
| | 17 | { |
| | 18 | unsigned long long n = sizeof(Buf); |
| | 19 | if (!ToEOF) n = std::min(Size, n); |
| | 20 | ssize_t const Res = read(Fd, Buf, n); |
| | 21 | if (Res < 0 || (!ToEOF && Res != (ssize_t) n)) // error, or short read |
| | 22 | return false; |
| | 23 | if (ToEOF && Res == 0) // EOF |
| | 24 | break; |
| | 25 | Size -= Res; |
| | 26 | Add(Buf,Res); |
| | 27 | } |
| | 28 | return true; |
| | 29 | } |
| | 30 | bool SummationImplementation::AddFD(FileFd &Fd, unsigned long long Size) { |
| | 31 | unsigned char Buf[64 * 64]; |
| | 32 | bool const ToEOF = (Size == 0); |
| | 33 | while (Size != 0 || ToEOF) |
| | 34 | { |
| | 35 | unsigned long long n = sizeof(Buf); |
| | 36 | if (!ToEOF) n = std::min(Size, n); |
| | 37 | unsigned long long a = 0; |
| | 38 | if (Fd.Read(Buf, n, &a) == false) // error |
| | 39 | return false; |
| | 40 | if (ToEOF == false) |
| | 41 | { |
| | 42 | if (a != n) // short read |
| | 43 | return false; |
| | 44 | } |
| | 45 | else if (a == 0) // EOF |
| | 46 | break; |
| | 47 | Size -= a; |
| | 48 | Add(Buf, a); |
| | 49 | } |
| | 50 | return true; |
| | 51 | } |
| | 52 | /*}}}*/ |
projects / apt.git / blame_incremental