7b38fdd801
This commit moves a huge chunk of the code to go. The TODO.md document indicates what is left to be done.
41 lines
752 B
Go
41 lines
752 B
Go
package fsx
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import (
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"errors"
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"io"
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"os"
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)
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var ErrCopySameFile = errors.New("src and dst must be different files")
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// CopyFile copies a file from src to dst.
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// When dst and src are the same file, returns ErrCopySameFile.
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func CopyFile(dst, src string) error {
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if src == dst {
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return ErrCopySameFile
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}
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// open the source
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srcFile, err := os.Open(src)
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if err != nil {
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return err
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}
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defer srcFile.Close()
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// stat it to get the mode!
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srcStat, err := srcFile.Stat()
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if err != nil {
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return err
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}
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// open or create the destination
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dstFile, err := os.OpenFile(dst, os.O_WRONLY|os.O_CREATE, srcStat.Mode())
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if err != nil {
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return err
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}
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defer dstFile.Close()
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// and do the copy!
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_, err = io.Copy(dstFile, srcFile)
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return err
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}
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