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75 lines
1.8 KiB
75 lines
1.8 KiB
package buf
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import (
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"io"
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"time"
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)
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// Reader extends io.Reader with MultiBuffer.
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type Reader interface {
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// ReadMultiBuffer reads content from underlying reader, and put it into a MultiBuffer.
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ReadMultiBuffer() (MultiBuffer, error)
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}
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// ErrReadTimeout is an error that happens with IO timeout.
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var ErrReadTimeout = newError("IO timeout")
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// TimeoutReader is a reader that returns error if Read() operation takes longer than the given timeout.
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type TimeoutReader interface {
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ReadTimeout(time.Duration) (MultiBuffer, error)
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}
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// Writer extends io.Writer with MultiBuffer.
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type Writer interface {
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// WriteMultiBuffer writes a MultiBuffer into underlying writer.
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WriteMultiBuffer(MultiBuffer) error
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}
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// ReadFrom creates a Supplier to read from a given io.Reader.
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func ReadFrom(reader io.Reader) Supplier {
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return func(b []byte) (int, error) {
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return reader.Read(b)
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}
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}
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// ReadFullFrom creates a Supplier to read full buffer from a given io.Reader.
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func ReadFullFrom(reader io.Reader, size int) Supplier {
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return func(b []byte) (int, error) {
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return io.ReadFull(reader, b[:size])
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}
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}
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// ReadAtLeastFrom create a Supplier to read at least size bytes from the given io.Reader.
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func ReadAtLeastFrom(reader io.Reader, size int) Supplier {
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return func(b []byte) (int, error) {
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return io.ReadAtLeast(reader, b, size)
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}
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}
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// NewReader creates a new Reader.
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// The Reader instance doesn't take the ownership of reader.
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func NewReader(reader io.Reader) Reader {
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if mr, ok := reader.(Reader); ok {
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return mr
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}
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return NewBytesToBufferReader(reader)
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}
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// NewWriter creates a new Writer.
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func NewWriter(writer io.Writer) Writer {
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if mw, ok := writer.(Writer); ok {
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return mw
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}
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return &BufferToBytesWriter{
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Writer: writer,
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}
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}
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func NewSequentialWriter(writer io.Writer) Writer {
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return &seqWriter{
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writer: writer,
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}
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}
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