37 lines
893 B
Go
37 lines
893 B
Go
package iotools
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import (
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"io"
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)
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// ReaderFunc is a function signature which allows
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// a function to implement the io.Reader type.
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type ReaderFunc func([]byte) (int, error)
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func (r ReaderFunc) Read(b []byte) (int, error) {
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return r(b)
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}
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// ReaderFromFunc is a function signature which allows
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// a function to implement the io.ReaderFrom type.
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type ReaderFromFunc func(io.Reader) (int64, error)
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func (rf ReaderFromFunc) ReadFrom(r io.Reader) (int64, error) {
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return rf(r)
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}
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// ReadCloser wraps an io.Reader and io.Closer in order to implement io.ReadCloser.
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func ReadCloser(r io.Reader, c io.Closer) io.ReadCloser {
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return &struct {
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io.Reader
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io.Closer
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}{r, c}
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}
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// NopReadCloser wraps an io.Reader to implement io.ReadCloser with empty io.Closer implementation.
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func NopReadCloser(r io.Reader) io.ReadCloser {
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return ReadCloser(r, CloserFunc(func() error {
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return nil
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}))
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}
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