FprintfIfNotEmpty prints the string value if it's not empty.

FprintfIfTrue prints the boolean value if it's true.

HashData returns the sha256 sum of src.

MultiReadSeeker returns a ReadSeeker that's the logical concatenation of the provided input readseekers.

NewBytesPipe creates new BytesPipe, initialized by specified slice.

NewCancelReadCloser creates a wrapper that closes the ReadCloser when the context is cancelled.

NewReadCloserWrapper returns a new io.ReadCloser.

NewReaderErrWrapper returns a new io.Reader.

NewWriteCloserWrapper returns a new io.WriteCloser.

NewWriteCounter returns a new WriteCounter.

NewWriteFlusher returns a new WriteFlusher.

NopWriteCloser returns a nopWriteCloser.

TempDir on Unix systems is equivalent to ioutil.TempDir.

ErrClosed is returned when Write is called on a closed BytesPipe.

BytesPipe is io.ReadWriteCloser which works similarly to pipe(queue).

NopFlusher represents a type which flush operation is nop.

NopWriter represents a type which write operation is nop.

OnEOFReader wraps a io.ReadCloser and a function the function will run at the end of file or close the file.

WriteCounter wraps a concrete io.Writer and hold a count of the number of bytes written to the writer during a "session".

WriteFlusher wraps the Write and Flush operation ensuring that every write is a flush.