41 lines
838 B
Go
41 lines
838 B
Go
// SPDX-License-Identifier: EUPL-1.2
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package stdio
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import (
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"io"
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"syscall"
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)
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type fdReader struct {
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fd int
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}
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// Read implements io.Reader for stdin without importing os.
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// Usage: Read(...)
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func (r fdReader) Read(p []byte) (int, error) {
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n, err := syscall.Read(r.fd, p)
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if n == 0 && err == nil {
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return 0, io.EOF
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}
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return n, err
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}
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type fdWriter struct {
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fd int
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}
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// Write implements io.Writer for stdout and stderr without importing os.
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// Usage: Write(...)
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func (w fdWriter) Write(p []byte) (int, error) {
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return syscall.Write(w.fd, p)
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}
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// Stdin exposes process stdin without importing os.
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var Stdin io.Reader = fdReader{fd: 0}
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// Stdout exposes process stdout without importing os.
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var Stdout io.Writer = fdWriter{fd: 1}
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// Stderr exposes process stderr without importing os.
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var Stderr io.Writer = fdWriter{fd: 2}
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