From 5c1f562452e201a968063e176b55fc14d912aea1 Mon Sep 17 00:00:00 2001
From: Jaromir Wysoglad
Date: Thu, 18 Jul 2019 13:34:22 +0200
Subject: TTS: Implement conversion to UTF-8 in say on linux

---
 .../text-to-speech/linux/linux-text-to-speech.cpp  | 31 +++++++++++++++++++---
 .../text-to-speech/linux/linux-text-to-speech.h    |  3 ++-
 .../windows/windows-text-to-speech.cpp             | 10 ++++++-
 .../windows/windows-text-to-speech.h               |  2 +-
 4 files changed, 39 insertions(+), 7 deletions(-)

(limited to 'backends/text-to-speech')

diff --git a/backends/text-to-speech/linux/linux-text-to-speech.cpp b/backends/text-to-speech/linux/linux-text-to-speech.cpp
index db036e053a..4241b76c7b 100644
--- a/backends/text-to-speech/linux/linux-text-to-speech.cpp
+++ b/backends/text-to-speech/linux/linux-text-to-speech.cpp
@@ -27,6 +27,7 @@
 
 #if defined(USE_LINUX_TTS)
 #include <speech-dispatcher/libspeechd.h>
+#include "backends/platform/sdl/sdl-sys.h"
 
 #include "common/translation.h"
 #include "common/debug.h"
@@ -107,13 +108,35 @@ void LinuxTextToSpeechManager::updateState(LinuxTextToSpeechManager::SpeechState
 	_speechState = state;
 }
 
-bool LinuxTextToSpeechManager::say(Common::String str) {
+Common::String LinuxTextToSpeechManager::strToUtf8(Common::String str, Common::String charset) {
+#if SDL_VERSION_ATLEAST(2, 0, 0)
+
+	char *conv_text = SDL_iconv_string("UTF-8", charset.c_str(), str.c_str(), str.size() + 1);
+	Common::String result;
+	if (conv_text) {
+		result = conv_text;
+		SDL_free(conv_text);
+	}
+
+	return result;
+#else
+	return Common::String();
+#endif
+}
+
+bool LinuxTextToSpeechManager::say(Common::String str, Common::String charset) {
 	if (_speechState == BROKEN)
 		return true;
-	//Convert string, that might have foreign characters to UTF-8
-	if (ConfMan.get("gui_language") != "C") {
-		str = Common::convertUtf32ToUtf8(Common::convertToU32String(str.c_str(), Common::kWindows1250)).c_str();
+	
+	if (charset == "") {
+#ifdef USE_TRANSLATION
+		charset = TransMan.getCurrentCharset();
+#else
+		charset = "ASCII";
+#endif
 	}
+	str = strToUtf8(str, charset);
+
 	if (isSpeaking())
 		stop();
 	debug("say: %s", str.c_str());
diff --git a/backends/text-to-speech/linux/linux-text-to-speech.h b/backends/text-to-speech/linux/linux-text-to-speech.h
index 57b9aeea60..1bb3ad5ce2 100644
--- a/backends/text-to-speech/linux/linux-text-to-speech.h
+++ b/backends/text-to-speech/linux/linux-text-to-speech.h
@@ -42,7 +42,7 @@ public:
 	LinuxTextToSpeechManager();
 	virtual ~LinuxTextToSpeechManager();
 
-	virtual bool say(Common::String str);
+	virtual bool say(Common::String str, Common::String charset = "");
 
 	virtual bool stop();
 	virtual bool pause();
@@ -74,6 +74,7 @@ private:
 	virtual void updateVoices();
 	void createVoice(int typeNumber, Common::TTSVoice::Gender, Common::TTSVoice::Age, char *description);
 	SpeechState _speechState;
+	Common::String strToUtf8(Common::String str, Common::String charset);
 };
 
 #endif
diff --git a/backends/text-to-speech/windows/windows-text-to-speech.cpp b/backends/text-to-speech/windows/windows-text-to-speech.cpp
index e9f28d966b..32087f5ccb 100644
--- a/backends/text-to-speech/windows/windows-text-to-speech.cpp
+++ b/backends/text-to-speech/windows/windows-text-to-speech.cpp
@@ -91,11 +91,19 @@ WindowsTextToSpeechManager::~WindowsTextToSpeechManager() {
 	::CoUninitialize();
 }
 
-bool WindowsTextToSpeechManager::say(Common::String str) {
+bool WindowsTextToSpeechManager::say(Common::String str, Common::String charset) {
 	if(_speechState == BROKEN || _speechState == NO_VOICE) {
 		warning("The tts cannot speak in this state");
 		return true;
 	}
+
+	if (charset == "") {
+#ifdef USE_TRANSLATION
+		charset = TransMan.getCurrentCharset();
+#else
+		charset = "ASCII";
+#endif
+	}
 	if (isPaused()) {
 		resume();
 	}
diff --git a/backends/text-to-speech/windows/windows-text-to-speech.h b/backends/text-to-speech/windows/windows-text-to-speech.h
index 2ae062ce92..848ae854eb 100644
--- a/backends/text-to-speech/windows/windows-text-to-speech.h
+++ b/backends/text-to-speech/windows/windows-text-to-speech.h
@@ -43,7 +43,7 @@ public:
 	WindowsTextToSpeechManager();
 	virtual ~WindowsTextToSpeechManager();
 
-	virtual bool say(Common::String str);
+	virtual bool say(Common::String str, Common::String charset = "");
 
 	virtual bool stop();
 	virtual bool pause();
-- 
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