1 files changed, 56 insertions, 0 deletions
diff --git a/hoelai.go b/hoelai.go
new file mode 100644
index 0000000..bf0e7eb
--- /dev/null
+++ b/hoelai.go
@@ -0,0 +1,56 @@
+package main
+
+import (
+	"fmt"
+	"git.uakci.pl/toaq/nuogai/vietoaq"
+	"strings"
+)
+
+func Hoelai(s string) string {
+	viet := vietoaq.To(s)
+	parts := vietoaq.Syllables(viet, vietoaq.VietoaqSyllable)
+	var sb strings.Builder
+	for i, part := range parts {
+		if i%2 == 0 {
+			sb.WriteString(part[0])
+			continue
+		}
+		onset, nucleus, coda := part[1], part[2], part[3]
+		switch onset {
+		case "ch":
+			onset = "w"
+		case "sh":
+			onset = "x"
+		case "x":
+			onset = "q"
+		}
+		diph := ""
+		if len(nucleus) >= 2 {
+			flag := true
+			switch nucleus[len(nucleus)-2:] {
+			case "ai":
+				diph = "y"
+			case "ao":
+				diph = "v"
+			case "oi":
+				diph = "z"
+			case "ei":
+				diph = "W"
+			default:
+				flag = false
+			}
+			if flag {
+				nucleus = nucleus[:len(nucleus)-2]
+			}
+		}
+		if len(nucleus) >= 2 {
+			diph = strings.ToUpper(nucleus[1:])
+			nucleus = nucleus[:1]
+		} else if nucleus == "a" && diph == "" {
+			nucleus = ""
+		}
+		fmt.Fprintf(&sb, "%s%s%s%s",
+			diph, onset, strings.ToUpper(coda), nucleus)
+	}
+	return sb.String()
+}