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/
session.go
205 lines (180 loc) · 3.61 KB
/
session.go
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package main
import (
"encoding/json"
"errors"
"github.com/anaminus/gxui"
"github.com/anaminus/gxui/math"
"github.com/anaminus/rbxplore/action"
"io"
"os"
"path/filepath"
"strings"
"github.com/robloxapi/rbxapi"
"github.com/robloxapi/rbxfile"
"github.com/robloxapi/rbxfile/bin"
"github.com/robloxapi/rbxfile/xml"
)
type Format byte
const (
FormatNone Format = iota
FormatRBXL
FormatRBXM
FormatRBXLX
FormatRBXMX
FormatJSON
)
func (f Format) String() string {
switch f {
case FormatRBXL:
return "rbxl"
case FormatRBXM:
return "rbxm"
case FormatRBXLX:
return "rbxlx"
case FormatRBXMX:
return "rbxmx"
case FormatJSON:
return "json"
}
return ""
}
func FormatFromString(s string) Format {
switch strings.ToLower(s) {
case "rbxl":
return FormatRBXL
case "rbxm":
return FormatRBXM
case "rbxlx":
return FormatRBXLX
case "rbxmx":
return FormatRBXMX
case "json":
return FormatJSON
}
return FormatNone
}
type FormatAdapter struct {
gxui.AdapterBase
}
func (a FormatAdapter) Count() int {
return 6
}
func (a FormatAdapter) ItemAt(index int) gxui.AdapterItem {
return Format(index)
}
func (a FormatAdapter) ItemIndex(item gxui.AdapterItem) int {
return int(item.(Format))
}
func (a FormatAdapter) Create(theme gxui.Theme, index int) gxui.Control {
l := theme.CreateLabel()
text := Format(index).String()
if text == "" {
text = "None"
}
l.SetText(text)
return l
}
func (a FormatAdapter) Size(gxui.Theme) math.Size {
return math.Size{W: 60, H: 22}
}
type Session struct {
File string
Format Format
Minified bool
Root *rbxfile.Root
Action *action.Controller
Unsaved bool
}
func NewSession(file string) (*Session, error) {
s := &Session{
File: file,
Root: &rbxfile.Root{},
Action: action.CreateController(20),
}
s.Action.OnUpdate(func(...interface{}) {
s.Unsaved = true
})
if err := s.decodeFile(); err != nil {
return nil, err
}
return s, nil
}
// If File is defined, determines Format, and decodes the file into Root.
func (s *Session) decodeFile() error {
s.Action.Lock()
defer s.Action.Unlock()
if s.File == "" {
return nil
}
f, err := os.Open(s.File)
if err != nil {
return err
}
defer f.Close()
var decode func(io.Reader, *rbxapi.API) (*rbxfile.Root, error)
// Guess format from file extension.
if format := FormatFromString(filepath.Ext(f.Name())[1:]); format != FormatNone {
s.Format = format
}
// Otherwise, use given format.
switch s.Format {
case FormatRBXL:
decode = bin.DeserializePlace
case FormatRBXM:
decode = bin.DeserializeModel
case FormatRBXLX:
decode = xml.Deserialize
case FormatRBXMX:
decode = xml.Deserialize
case FormatJSON:
d := json.NewDecoder(f)
if err := d.Decode(s.Root); err != nil {
return err
}
return nil
default:
return errors.New("unknown format")
}
s.Root, err = decode(f, API)
return err
}
func (s *Session) EncodeFile() error {
s.Action.Lock()
defer s.Action.Unlock()
if s.File == "" {
return errors.New("no file")
}
if s.Format == FormatNone {
return errors.New("no format")
}
f, err := os.Create(s.File)
if err != nil {
return err
}
defer f.Close()
var encode func(io.Writer, *rbxapi.API, *rbxfile.Root) error
switch s.Format {
case FormatRBXL:
encode = bin.SerializePlace
case FormatRBXM:
encode = bin.SerializeModel
case FormatRBXLX:
encode = xml.Serialize
case FormatRBXMX:
encode = xml.Serialize
case FormatJSON:
e := json.NewEncoder(f)
if err := e.Encode(s.Root); err != nil {
return err
}
return nil
default:
return errors.New("unknown format")
}
err = encode(f, API, s.Root)
if err != nil {
return err
}
s.Unsaved = false
return nil
}