/
tarxz.go
71 lines (58 loc) · 1.15 KB
/
tarxz.go
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package install
import (
"archive/tar"
"bytes"
"io"
"log"
"os"
"github.com/xi2/xz"
"github.com/devops-works/binenv/internal/mapping"
"github.com/devops-works/binenv/internal/tpl"
)
// TarXZ handles xz files
type TarXZ struct {
filters []string
}
// Install file from xz file
func (x TarXZ) Install(src, dst, version string, mapper mapping.Mapper) error {
noMatches := ErrNoMatch
data, err := os.ReadFile(src)
if err != nil {
log.Fatal(err)
}
r, err := xz.NewReader(bytes.NewReader(data), 0)
if err != nil {
return err
}
tarReader := tar.NewReader(r)
args := tpl.New(version, mapper)
for {
header, err := tarReader.Next()
if err == io.EOF {
break
}
if err != nil {
return err
}
switch header.Typeflag {
case tar.TypeReg: // regular file
ok, err := args.MatchFilters(header.Name, x.filters)
if err != nil {
return err
}
if !ok {
continue
}
out, err := os.OpenFile(dst, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0755)
if err != nil {
return err
}
defer out.Close()
if _, err := io.Copy(out, tarReader); err != nil {
log.Fatal(err)
}
noMatches = nil
}
}
return noMatches
}