Add Chinese transliteration via Pinyin conversion library

README.md

@@ -58,6 +58,7 @@ Since the PineTime does not have enough space to store all unicode glyphs, it on
 - French
 - Armenian
 - Korean
+- Chinese
 - Emoji
 
 Place the desired map names in an array as `notifs.translit.use`. They will be evaluated in order. You can also put custom transliterations in `notifs.translit.custom`. These take priority over any other maps. The `notifs.translit` config section should look like this:

go.mod

@@ -15,6 +15,7 @@ require (
 	github.com/mattn/go-isatty v0.0.13 // indirect
 	github.com/mattn/go-runewidth v0.0.13 // indirect
 	github.com/mitchellh/mapstructure v1.4.1
+	github.com/mozillazg/go-pinyin v0.18.0
 	github.com/rs/zerolog v1.23.0
 	github.com/sirupsen/logrus v1.8.1 // indirect
 	github.com/spf13/cast v1.4.1 // indirect

go.sum

@@ -242,6 +242,8 @@ github.com/mitchellh/mapstructure v1.4.1/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RR
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
 github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
+github.com/mozillazg/go-pinyin v0.18.0 h1:hQompXO23/0ohH8YNjvfsAITnCQImCiR/Fny8EhIeW0=
+github.com/mozillazg/go-pinyin v0.18.0/go.mod h1:iR4EnMMRXkfpFVV5FMi4FNB6wGq9NV6uDWbUuPhP4Yc=
 github.com/muka/go-bluetooth v0.0.0-20210812063148-b6c83362e27d h1:EG/xyWjHT19rkUpwsWSkyiCCmyqNwFovr9m10rhyOxU=
 github.com/muka/go-bluetooth v0.0.0-20210812063148-b6c83362e27d/go.mod h1:dMCjicU6vRBk34dqOmIZm0aod6gUwZXOXzBROqGous0=
 github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646/go.mod h1:jpp1/29i3P1S/RLdc7JQKbRpFeM1dOBd8T9ki5s+AY8=

notifs.go

@@ -73,7 +73,7 @@ func initNotifRelay(dev *infinitime.Device) error {
 			}
 
 			maps := viper.GetStringSlice("notifs.translit.use")
-			translit.Maps["custom"] = translit.Map(viper.GetStringSlice("notifs.translit.custom"))
+			translit.Transliterators["custom"] = translit.Map(viper.GetStringSlice("notifs.translit.custom"))
 			sender = translit.Transliterate(sender, maps...)
 			summary = translit.Transliterate(summary, maps...)
 			body = translit.Transliterate(body, maps...)

socket.go

@@ -171,7 +171,7 @@ func handleConnection(conn net.Conn, dev *infinitime.Device) {
 				break
 			}
 			maps := viper.GetStringSlice("notifs.translit.use")
-			translit.Maps["custom"] = translit.Map(viper.GetStringSlice("notifs.translit.custom"))
+			translit.Transliterators["custom"] = translit.Map(viper.GetStringSlice("notifs.translit.custom"))
 			title := translit.Transliterate(reqData.Title, maps...)
 			body := translit.Transliterate(reqData.Body, maps...)
 			// Send notification to watch

translit/chinese.go

@@ -0,0 +1,42 @@
+package translit
+
+import (
+	"bytes"
+	"strings"
+	"unicode"
+
+	"github.com/mozillazg/go-pinyin"
+)
+
+// ChineseTranslit implements Transliterator using a pinyin
+// conversion library.
+type ChineseTranslit struct{}
+
+func (ct *ChineseTranslit) Transliterate(s string) string {
+	// Create buffer for final output
+	outBuf := &bytes.Buffer{}
+	// Create buffer to temporarily store chinese characters
+	tmpBuf := &bytes.Buffer{}
+	// For every character in string
+	for _, char := range s {
+		// If character in Han range
+		if unicode.Is(unicode.Han, char) {
+			// Write character to temporary buffer
+			tmpBuf.WriteRune(char)
+		} else {
+			// If buffer contains characters
+			if tmpBuf.Len() > 0 {
+				// Convert to pinyin (without tones)
+				out := pinyin.LazyConvert(tmpBuf.String(), nil)
+				// Write space-separated string to output
+				outBuf.WriteString(strings.Join(out, " "))
+				// Reset temporary buffer
+				tmpBuf.Reset()
+			}
+			// Write character to output
+			outBuf.WriteRune(char)
+		}
+	}
+	// Return output string
+	return outBuf.String()
+}

translit/translit.go

@@ -9,7 +9,7 @@ func Transliterate(s string, useMaps ...string) string {
 	// Create variable to store modified string
 	out := s
 	// If custom map exists
-	if customMap, ok := Maps["custom"]; ok {
+	if customMap, ok := Transliterators["custom"]; ok {
 		// Perform transliteration with it
 		out = customMap.Transliterate(out)
 	}
@@ -20,7 +20,7 @@ func Transliterate(s string, useMaps ...string) string {
 			continue
 		}
 		// Get requested map
-		translitMap, ok := Maps[useMap]
+		translitMap, ok := Transliterators[useMap]
 		if !ok {
 			continue
 		}
@@ -47,9 +47,9 @@ func (mt Map) Transliterate(s string) string {
 	return strings.NewReplacer(mt...).Replace(s)
 }
 
-// Maps stores transliteration maps as slices to preserve order.
-// Some of these maps were sourced from https://codeberg.org/Freeyourgadget/Gadgetbridge
-var Maps = map[string]Transliterator{
+// Transliterators stores transliterator implementations for each supported language.
+// Some of these were sourced from https://codeberg.org/Freeyourgadget/Gadgetbridge
+var Transliterators = map[string]Transliterator{
 	"eASCII": Map{
 		"œ", "oe",
 		"ª", "a",
@@ -464,5 +464,6 @@ var Maps = map[string]Transliterator{
 		"😴", ":zzz:",
 		"💤", ":zzz:",
 	},
-	"Korean": &KoreanTranslit{},
+	"Korean":  &KoreanTranslit{},
+	"Chinese": &ChineseTranslit{},
 }