68 lines
1.2 KiB
Go
68 lines
1.2 KiB
Go
package configui
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import (
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"archive/tar"
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"compress/gzip"
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"io"
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"os"
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"strings"
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)
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func bundle(buf io.Writer, paths []string, rootDir string, flat bool) error {
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gw := gzip.NewWriter(buf)
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defer gw.Close()
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tw := tar.NewWriter(gw)
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defer tw.Close()
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for _, file := range paths {
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if err := func(file string) error {
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f, err := os.Open(file)
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if err != nil {
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return err
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}
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defer f.Close()
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info, err := f.Stat()
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if err != nil {
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return err
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}
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header, err := tar.FileInfoHeader(info, info.Name())
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if err != nil {
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return err
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}
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// Use full path as name (FileInfoHeader only takes the basename)
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// If we don't do this the directory strucuture would
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// not be preserved
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// https://golang.org/src/archive/tar/common.go?#L626
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if !flat {
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if !strings.HasPrefix(file, "/") {
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file = rootDir + "/" + file
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} else {
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file = rootDir + file
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}
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header.Name = file
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}
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// Write file header to the tar archive
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err = tw.WriteHeader(header)
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if err != nil {
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return err
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}
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// Copy file content to tar archive
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_, err = io.Copy(tw, f)
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if err != nil {
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return err
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}
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return nil
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}(file); err != nil {
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return err
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}
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}
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return nil
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}
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