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package builder
import (
"bytes"
"compress/gzip"
"encoding/json"
"io/ioutil"
"os"
"path/filepath"
"strings"
"github.com/pkg/errors"
)
type box struct {
Name string
Files []file
compress bool
}
func (b *box) Walk(root string) error {
root, err := filepath.EvalSymlinks(root)
if err != nil {
return errors.WithStack(err)
}
if _, err := os.Stat(root); err != nil {
// return nil
return errors.Errorf("could not find folder for box: %s", root)
}
return filepath.Walk(root, func(path string, info os.FileInfo, err error) error {
if info == nil || info.IsDir() || strings.HasSuffix(info.Name(), "-packr.go") {
return nil
}
name := strings.Replace(path, root+string(os.PathSeparator), "", 1)
name = strings.Replace(name, "\\", "/", -1)
f := file{
Name: name,
}
DebugLog("packing file %s\n", f.Name)
bb, err := ioutil.ReadFile(path)
if err != nil {
return errors.WithStack(err)
}
if b.compress {
bb, err = compressFile(bb)
if err != nil {
return errors.WithStack(err)
}
}
bb, err = json.Marshal(bb)
if err != nil {
return errors.WithStack(err)
}
f.Contents = strings.Replace(string(bb), "\"", "\\\"", -1)
DebugLog("packed file %s\n", f.Name)
b.Files = append(b.Files, f)
return nil
})
}
func compressFile(bb []byte) ([]byte, error) {
var buf bytes.Buffer
writer := gzip.NewWriter(&buf)
_, err := writer.Write(bb)
if err != nil {
return bb, errors.WithStack(err)
}
err = writer.Close()
if err != nil {
return bb, errors.WithStack(err)
}
return buf.Bytes(), nil
}
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