| 38 | namespace |
| 39 | { |
| 40 | template<class FROM, class TO> int64 CopyImpl(TO* pTo, FROM* pFrom, int64 amt) |
| 41 | { |
| 42 | enum |
| 43 | { |
| 44 | BUF_SIZE = 8192 |
| 45 | }; |
| 46 | int8 buf[BUF_SIZE]; |
| 47 | int64 amtLeft = amt; |
| 48 | |
| 49 | while (amtLeft > 0) |
| 50 | { |
| 51 | // NOTE: We use int's here rather than int64 because iSerializer and cArchive |
| 52 | // only take int's as their size parameter - dmb |
| 53 | int amtToRead = amtLeft > BUF_SIZE ? BUF_SIZE : (int)amtLeft; |
| 54 | int amtRead = pFrom->ReadBlob(buf, amtToRead); |
| 55 | amtLeft -= amtRead; |
| 56 | pTo->WriteBlob(buf, amtRead); |
| 57 | if (amtRead < amtToRead) |
| 58 | break; |
| 59 | } |
| 60 | |
| 61 | // return the amount copied ... |
| 62 | return (amt - amtLeft); |
| 63 | } |
| 64 | } // namespace |
| 65 | |
| 66 | |