add cdmparser

pkg/cmdparser/cmdparser.go

@@ -0,0 +1,59 @@
+package cmdparser
+
+import "regexp"
+
+// CommandType -
+type CommandType int
+
+// Cmd Types
+const (
+	TextCmd CommandType = 1 << iota
+	ImageCmd
+	VideoCmd
+)
+
+// Command -
+type Command struct {
+	Type    CommandType
+	Message string
+}
+
+// CmdAction -
+type CmdAction struct {
+	Key string
+	Act string
+}
+
+var actRegex = regexp.MustCompile("{{(.+?)}}")
+
+// CommandParser -
+func CommandParser(value string) (cmd *Command, err error) {
+	acts := parseCmdAction(value)
+	if len(acts) == 0 {
+		// no get actions return origin value
+		return &Command{
+			Type:    TextCmd,
+			Message: value,
+		}, nil
+	}
+
+	return
+}
+
+func parseCmdAction(value string) (acts []*CmdAction) {
+	strs := actRegex.FindAllStringSubmatch(value, -1)
+	if len(strs) == 0 {
+		return nil
+	}
+
+	acts = make([]*CmdAction, 0, len(strs))
+
+	for _, key := range strs {
+		acts = append(acts, &CmdAction{Key: key[1]})
+	}
+
+	return
+}
+
+func selectAction(act *CmdAction) {
+}