/
pack.go
115 lines (97 loc) · 2.27 KB
/
pack.go
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package internal
import (
"archive/tar"
"compress/gzip"
"errors"
"fmt"
"io"
"os"
"path"
"path/filepath"
"strings"
)
type PackResult struct {
PackagePath string
}
func Pack(repo *Repository, pkg *Package) (PackResult, error) {
packedDir := path.Join(repo.OutDir, "packed")
if err := os.MkdirAll(packedDir, 0755); err != nil {
return PackResult{}, err
}
distPath := path.Join(repo.DistDir, pkg.Name)
metadata, err := ReadPackageJSON(distPath)
if err != nil {
return PackResult{}, err
}
version := metadata.Version
if version == "" {
return PackResult{}, errors.New("version not set in package build")
}
strippedName := stripName(pkg.Name)
packedName := fmt.Sprintf("%s-%s.tgz", strippedName, version)
packedPath := path.Join(packedDir, packedName)
packedFile, err := os.Create(packedPath)
if err != nil {
return PackResult{}, err
}
defer packedFile.Close()
zw := gzip.NewWriter(packedFile)
tw := tar.NewWriter(zw)
filepath.Walk(distPath, func(file string, fi os.FileInfo, err error) error {
mode := fi.Mode()
switch {
case mode.IsDir():
case mode.IsRegular():
default:
return fmt.Errorf("cannot pack irregular file: %q", fi.Name())
}
header, err := tar.FileInfoHeader(fi, file)
if err != nil {
return err
}
relpath, err := filepath.Rel(distPath, file)
if err != nil {
return err
}
header.Name = filepath.ToSlash(path.Join("package", relpath))
if err := tw.WriteHeader(header); err != nil {
return err
}
if fi.IsDir() {
return nil
}
data, err := os.Open(file)
if err != nil {
return err
}
if _, err := io.Copy(tw, data); err != nil {
_ = data.Close()
return err
}
return data.Close()
})
if err := tw.Close(); err != nil {
return PackResult{}, err
}
if err := zw.Close(); err != nil {
return PackResult{}, err
}
resultName := strippedName + ".tgz"
resultPath := path.Join(packedDir, resultName)
if err := os.Remove(resultPath); err != nil {
if !os.IsNotExist(err) {
return PackResult{}, err
}
}
if err := os.Symlink(packedPath, resultPath); err != nil {
return PackResult{}, err
}
return PackResult{
PackagePath: packedPath,
}, nil
}
func stripName(name string) string {
name = strings.ReplaceAll(name, "@", "")
name = strings.ReplaceAll(name, "/", "-")
return name
}