Read all the data from the given file handle 64kB at a time.
Stops when EOF is reached.
Modulefs-api-0.4.0.0Haskell2010
System.FS.API.Lazy
- 6 values
- Packagefs-api-0.4.0.0
- Exports6
- LanguageHaskell2010
- LicenceApache-2.0
- SourceLazy.hs
API
0 declarationsmodule System.FS.API
Lazy functions
6 declarationsvalue
hGetAllAt :: Monad m=> HasFS m h-> Handle h-> AbsOffsetThe offset at which to read.
-> m ByteString
Like hGetAll, but is thread safe since it does not change or depend
on the file offset. pread syscall is used internally.
Makes sure it reads all requested bytes. If eof is found before all bytes are read, it throws an exception.
value
hGetExactlyAt :: (HasCallStack, MonadThrow m)=> HasFS m h-> Handle h-> Word64The number of bytes to read.
-> AbsOffsetThe offset at which to read.
-> m ByteString
Like hGetExactly, but is thread safe since it does not change or depend
on the file offset. pread syscall is used internally.
This function makes sure that the whole Builder is written.
The chunk size of the resulting ByteString determines how much memory will be used while writing to the handle.
This function makes sure that the whole ByteString is written.