code cleanup: new file langopts.c for handling language options.

The switch case in LoadVoice() currently mixes voice and language
options. This change will start separating them into two functions.

CheckTranslator will be moved to langopts.c. In the future there should
be no need to use it in voices.c. There will be other temporary
solutions also.

Makefile.am

 	src/libespeak-ng/espeak_api.c \
 	src/libespeak-ng/ieee80.c \
 	src/libespeak-ng/intonation.c \
+	src/libespeak-ng/langopts.c \
 	src/libespeak-ng/mnemonics.c \
 	src/libespeak-ng/numbers.c \
 	src/libespeak-ng/readclause.c \
 	src/libespeak-ng/ieee80.h \
 	src/libespeak-ng/intonation.h \
 	src/libespeak-ng/klatt.h \
+	src/libespeak-ng/langopts.h \
 	src/libespeak-ng/mbrola.h \
 	src/libespeak-ng/mbrowrap.h \
 	src/libespeak-ng/mnemonics.h \

android/jni/Android.mk

   src/libespeak-ng/ieee80.c \
   src/libespeak-ng/intonation.c \
   src/libespeak-ng/klatt.c \
+  src/libespeak-ng/langopts.c \
   src/libespeak-ng/mnemonics.c \
   src/libespeak-ng/numbers.c \
   src/libespeak-ng/phoneme.c \

src/libespeak-ng/langopts.c

+/*
+ * Copyright (C) 2005 to 2015 by Jonathan Duddington
+ * email: [email protected]
+ * Copyright (C) 2015-2017 Reece H. Dunn
+ * Copyright (C) 2022 Juho Hiltunen
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see: <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <errno.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <espeak-ng/espeak_ng.h>
+#include <espeak-ng/speak_lib.h>
+#include <espeak-ng/encoding.h>
+
+#include "langopts.h"
+#include "mnemonics.h"                // for MNEM_TAB
+#include "translate.h"                // for Translator
+#include "voice.h"                    // for CheckTranslator()
+
+enum {
+	V_NAME = 1,
+	V_LANGUAGE,
+	V_GENDER,
+	V_PHONEMES,
+	V_DICTIONARY,
+	V_VARIANTS,
+
+	V_MAINTAINER,
+	V_STATUS,
+
+	// these affect voice quality, are independent of language
+	V_FORMANT,
+	V_PITCH,
+	V_ECHO,
+	V_FLUTTER,
+	V_ROUGHNESS,
+	V_CLARITY,
+	V_TONE,
+	V_VOICING,
+	V_BREATH,
+	V_BREATHW,
+
+	// these override defaults set by the translator
+	V_LOWERCASE_SENTENCE,
+	V_WORDGAP,
+	V_INTONATION,
+	V_TUNES,
+	V_STRESSLENGTH,
+	V_STRESSAMP,
+	V_STRESSADD,
+	V_DICTRULES,
+	V_STRESSRULE,
+	V_STRESSOPT,
+	V_NUMBERS,
+
+	V_MBROLA,
+	V_KLATT,
+	V_FAST,
+	V_SPEED,
+	V_DICTMIN,
+
+	// these need a phoneme table to have been specified
+	V_REPLACE,
+	V_CONSONANTS
+};
+
+static const MNEM_TAB langopts_tab[] = {
+	{ "maintainer",   V_MAINTAINER },
+	{ "status",       V_STATUS },
+	{ "lowercaseSentence",	V_LOWERCASE_SENTENCE },
+
+	{ NULL, 0 }
+};
+
+extern int CheckTranslator(Translator *tr, const MNEM_TAB *keyword_tab, int key);
+
+void LoadLanguageOptions(Translator *translator, int key ) {
+		switch (key)
+		{
+		case V_LOWERCASE_SENTENCE: {
+			if (CheckTranslator(translator, langopts_tab, key) != 0)
+				break;
+
+			translator->langopts.lowercase_sentence = true;
+			break;
+			}
+
+			break;
+		case V_MAINTAINER:
+		case V_STATUS:
+			break;
+	}
+}

src/libespeak-ng/voice.h

 
 #include <espeak-ng/espeak_ng.h>
 
+#include "mnemonics.h"
+#include "translate.h"
+
 #ifdef __cplusplus
 extern "C"
 {
 extern voice_t *voice;
 extern int tone_points[12];
 
+int CheckTranslator(Translator *tr, const MNEM_TAB *keyword_tab, int key);
 const char *SelectVoice(espeak_VOICE *voice_select, int *found);
 espeak_VOICE *SelectVoiceByName(espeak_VOICE **voices, const char *name);
 voice_t *LoadVoice(const char *voice_name, int control);

src/libespeak-ng/voices.c

 #include "voice.h"                    // for voice_t, DoVoiceChange, N_PEAKS
 #include "common.h"                    // for GetFileLength, strncpy0
 #include "dictionary.h"               // for LoadDictionary
+#include "langopts.h"                 // for LoadLanguageOptions
 #include "mnemonics.h"               // for LookupMnemName, MNEM_TAB
 #include "phoneme.h"                  // for REPLACE_PHONEMES, n_replace_pho...
 #include "speech.h"                   // for PATHSEP
 #include "translate.h"                // for LANGUAGE_OPTIONS, DeleteTranslator
 #include "wavegen.h"                  // for InitBreath
 
+
+
 static const MNEM_TAB genders[] = {
 	{ "male", ENGENDER_MALE },
 	{ "female", ENGENDER_FEMALE },
 	}
 }
 
-static int CheckTranslator(Translator *tr, const MNEM_TAB *keyword_tab, int key)
+int CheckTranslator(Translator *tr, const MNEM_TAB *keyword_tab, int key)
 {
 	// Return 0 if translator is set.
 	// Return 1 and print an error message for specified key if not
 
 		key = LookupMnem(keyword_tab, buf);
 
+        LoadLanguageOptions(translator, key);
 		switch (key)
 		{
 		case V_LANGUAGE:
 		case V_FORMANT:
 			VoiceFormant(p);
 			break;
-		case V_LOWERCASE_SENTENCE: {
-			if (CheckTranslator(translator, keyword_tab, key) != 0)
-				break;
-
-			translator->langopts.lowercase_sentence = true;
-			break;
-			}
-
 		case V_PITCH:
 			// default is  pitch 82 118
 			if (sscanf(p, "%d %d", &pitch1, &pitch2) == 2) {

src/windows/libespeak-ng.vcxproj

     <ClCompile Include="..\libespeak-ng\ieee80.c" />
     <ClCompile Include="..\libespeak-ng\intonation.c" />
     <ClCompile Include="..\libespeak-ng\klatt.c" />
+    <ClCompile Include="..\libespeak-ng\langopts.c" />
     <ClCompile Include="..\libespeak-ng\mbrowrap.c" />
     <ClCompile Include="..\libespeak-ng\mnemonics.c" />
     <ClCompile Include="..\libespeak-ng\numbers.c" />
     <ClInclude Include="..\libespeak-ng\common.h" />
     <ClInclude Include="..\libespeak-ng\error.h" />
     <ClInclude Include="..\libespeak-ng\klatt.h" />
+    <ClInclude Include="..\libespeak-ng\langopts.h" />
     <ClInclude Include="..\libespeak-ng\mbrowrap.h" />
     <ClInclude Include="..\libespeak-ng\phoneme.h" />
     <ClInclude Include="..\libespeak-ng\sintab.h" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
+</Project>

src/windows/libespeak-ng.vcxproj.filters

     <ClCompile Include="..\libespeak-ng\klatt.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\libespeak-ng\langopts.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="..\libespeak-ng\mbrowrap.c">
       <Filter>Source Files</Filter>
     </ClCompile>
     <ClInclude Include="..\libespeak-ng\klatt.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\libespeak-ng\langopts.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
     <ClInclude Include="..\libespeak-ng\mbrowrap.h">
       <Filter>Header Files</Filter>
     </ClInclude>
       <Filter>Source Files</Filter>
     </None>
   </ItemGroup>
-</Project>
+</Project>