Better Resource Management

resources.go

@@ -0,0 +1,79 @@
+package main
+
+import "errors"
+
+type ResourceId uint16
+
+type Translator struct {
+	values map[ResourceId]string
+}
+
+func NewTranslator() *Translator {
+	return &Translator{
+		values: make(map[ResourceId]string),
+	}
+}
+
+func (t *Translator) addString(res ResourceId, val string) {
+	t.values[res] = val
+	if _, ok := t.values[(res & 255)]; !ok {
+		t.values[(res & 255)] = val
+	}
+}
+
+func (t *Translator) getString(res ResourceId) (string, error) {
+	if v, ok := t.values[res]; ok {
+		return v, nil
+	}
+	// Couldn't pull the exact resource, try the basic one
+	if v, ok := t.values[(res & 255)]; ok {
+		return v, nil
+	}
+	return "", errors.New("String Resource Not Found")
+}
+
+const (
+	ResStrListChanged ResourceId = iota
+	ResStrTaskListNotLoaded
+	ResStrDoneListNotLoaded
+	ResStrInvalidRefreshRequest
+
+	ResModeCLI ResourceId = 1 << (iota + 9)
+	ResModeUI
+)
+
+func (a *AppState) initLanguage() {
+	a.lang = NewTranslator()
+
+	// Strings that are the same regardless of mode
+	a.lang.addString((ResStrTaskListNotLoaded), "Task list hasn't been loaded")
+	a.lang.addString((ResStrDoneListNotLoaded), "Done list hasn't been loaded")
+
+	// CLI Strings
+	a.lang.addString((ResStrListChanged | ResModeCLI), "List changed somewhere else")
+
+	// UI Strings
+	a.lang.addString((ResStrListChanged | ResModeUI), "List changed somewhere else, reload and try again (Ctrl+R)")
+}
+
+// s returns a string with the given stringId
+// (per the constants above)
+func (a *AppState) s(stringId ResourceId) string {
+	if stringId&255 != stringId {
+		// the attribute already has extended data in it.
+		if v, err := a.lang.getString(stringId); err == nil {
+			return v
+		}
+		return ""
+	}
+	if v, err := a.lang.getString((stringId | a.mode)); err == nil {
+		return v
+	}
+	return ""
+}
+
+// e is basically the same as 's', but returns
+// the string in an error object
+func (a *AppState) e(stringId ResourceId) error {
+	return errors.New(a.s(stringId))
+}