124 lines
2.6 KiB
Go
124 lines
2.6 KiB
Go
package common
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import (
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"encoding/json"
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"errors"
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"io/ioutil"
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"path/filepath"
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)
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var pluginLangs = make(map[string]PluginLang)
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// For non-native plugins to bind JSON files to. E.g. JS and Lua
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type PluginMeta struct {
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UName string
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Name string
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Author string
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URL string
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Settings string
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Tag string
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Skip bool // Skip this folder?
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Main string // The main file
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Hooks map[string]string // Hooks mapped to functions
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}
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type PluginLang interface {
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GetName() string
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GetExts() []string
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Init() error
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AddPlugin(meta PluginMeta) (*Plugin, error)
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//AddHook(name string, handler interface{}) error
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//RemoveHook(name string, handler interface{})
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//RunHook(name string, data interface{}) interface{}
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//RunVHook(name string data ...interface{}) interface{}
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}
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/*
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var ext = filepath.Ext(pluginFile.Name())
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if ext == ".txt" || ext == ".go" {
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continue
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}
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*/
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func InitPluginLangs() error {
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for _, pluginLang := range pluginLangs {
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pluginLang.Init()
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}
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pluginList, err := GetPluginFiles()
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if err != nil {
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return err
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}
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for _, pluginItem := range pluginList {
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pluginFile, err := ioutil.ReadFile("./extend/" + pluginItem + "/plugin.json")
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if err != nil {
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return err
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}
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var plugin PluginMeta
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err = json.Unmarshal(pluginFile, &plugin)
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if err != nil {
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return err
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}
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if plugin.Skip {
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continue
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}
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e := func(field string, name string) error {
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return errors.New("The "+field+" field must not be blank on plugin '" + name + "'")
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}
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if plugin.UName == "" {
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return e("UName",pluginItem)
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}
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if plugin.Name == "" {
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return e("Name",pluginItem)
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}
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if plugin.Author == "" {
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return e("Author",pluginItem)
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}
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if plugin.Main == "" {
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return errors.New("Couldn't find a main file for plugin '" + pluginItem + "'")
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}
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ext := filepath.Ext(plugin.Main)
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pluginLang, err := ExtToPluginLang(ext)
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if err != nil {
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return err
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}
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pplugin, err := pluginLang.AddPlugin(plugin)
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if err != nil {
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return err
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}
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Plugins[plugin.UName] = pplugin
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}
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return nil
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}
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func GetPluginFiles() (pluginList []string, err error) {
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pluginFiles, err := ioutil.ReadDir("./extend")
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if err != nil {
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return nil, err
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}
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for _, pluginFile := range pluginFiles {
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if !pluginFile.IsDir() {
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continue
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}
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pluginList = append(pluginList, pluginFile.Name())
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}
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return pluginList, nil
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}
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func ExtToPluginLang(ext string) (PluginLang, error) {
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for _, pluginLang := range pluginLangs {
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for _, registeredExt := range pluginLang.GetExts() {
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if registeredExt == ext {
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return pluginLang, nil
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}
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}
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}
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return nil, errors.New("No plugin lang handlers are capable of handling extension '" + ext + "'")
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}
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