/
transfer_generator.go
101 lines (88 loc) · 1.85 KB
/
transfer_generator.go
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package main
import (
"archive/zip"
"encoding/json"
"errors"
"os"
"path"
"strings"
"vimagination.zapto.org/byteio"
"vimagination.zapto.org/minewebgen/internal/data"
)
func (t Transfer) generator(name string, r *byteio.StickyLittleEndianReader, w *byteio.StickyLittleEndianWriter, f *os.File, size int64) error {
g := t.c.Generators.New(t.c.Settings().DirGenerators)
if g == nil {
return errors.New("error creating generator")
}
g.Name = name
done := false
defer func() {
if !done {
t.c.RemoveGenerator(g.ID)
}
go t.c.Save()
}()
zr, err := zip.NewReader(f, size)
if err != nil {
f.Seek(0, 0)
e := json.NewDecoder(f).Decode(new(data.GeneratorData))
if e != nil {
return err
}
err = moveFile(f.Name(), path.Join(g.Path, "data.gen"))
if err != nil {
return err
}
done = true
return nil
}
gens := make([]*zip.File, 0, 16)
for _, file := range zr.File {
if file.Name == "data.gen" {
gens = []*zip.File{file}
break
}
if strings.HasSuffix(file.Name, ".gen") || strings.HasSuffix(file.Name, ".json") {
gens = append(gens, file)
}
}
if len(gens) == 0 {
return errors.New("cannot find generator data in zip")
}
if len(gens) > 1 {
w.WriteUint8(1)
w.WriteInt16(int16(len(gens)))
for _, gen := range gens {
data.WriteString(w, gen.Name)
}
if w.Err != nil {
return w.Err
}
p := r.ReadInt16()
if r.Err != nil {
return r.Err
}
if int(p) >= len(gens) || p < 0 {
return errors.New("error selecting generator data")
}
gens[0] = gens[p]
}
gd, err := gens[0].Open()
if err != nil {
return err
}
err = json.NewDecoder(gd).Decode(new(data.GeneratorData))
if err != nil {
return err
}
err = unzip(zr, g.Path)
if err != nil {
return err
}
err = os.Rename(path.Join(g.Path, gens[0].Name), path.Join(g.Path, "data.gen"))
if err != nil {
return err
}
done = true
return nil
}