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23 lines
546 B
Go
23 lines
546 B
Go
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// Package ioutil provides a WriteFile func with an io.Reader as input.
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package ioutil
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import (
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"io"
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"os"
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)
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// WriteFile copies from r to a file named by filename.
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// If the file does not exist, WriteFile creates it with permissions 0644;
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// otherwise WriteFile truncates it before writing.
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func WriteFile(filename string, r io.Reader) error {
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f, err := os.OpenFile(filename, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
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if err != nil {
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return err
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}
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_, err = io.Copy(f, r)
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if err1 := f.Close(); err == nil {
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err = err1
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}
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return err
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}
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