Remove the unused f_in argument to the Read/Translate/SpeakNextClause functions.

src/libespeak-ng/readclause.c

 static int n_namedata = 0;
 char *namedata = NULL;
 
-static FILE *f_input = NULL;
 static int ungot_char2 = 0;
 unsigned char *p_textinput;
 wchar_t *p_wchar_input;
 static void GetC_unget(int c)
 {
 	// This is only called with UTF8 input, not wchar input
-	if (f_input != NULL)
-		ungetc(c, f_input);
-	else {
-		p_textinput--;
-		*p_textinput = c;
-		end_of_input = 0;
-	}
+	p_textinput--;
+	*p_textinput = c;
+	end_of_input = 0;
 }
 
 int Eof(void)
 	if (ungot_char != 0)
 		return 0;
 
-	if (f_input != 0)
-		return feof(f_input);
-
 	return end_of_input;
 }
 
 	unsigned int c;
 	unsigned int c2;
 
-	if (f_input != NULL) {
-		c = fgetc(f_input);
-		if (feof(f_input)) c = ' ';
-
-		if (option_multibyte == espeakCHARS_16BIT) {
-			c2 = fgetc(f_input);
-			if (feof(f_input)) c2 = 0;
-			c = c + (c2 << 8);
-		}
-		return c;
-	}
-
 	if (option_multibyte == espeakCHARS_WCHAR) {
 		if (*p_wchar_input == 0) {
 			end_of_input = 1;
 	{ NULL,   -1 }
 };
 
-int ReadClause(Translator *tr, FILE *f_in, char *buf, short *charix, int *charix_top, int n_buf, int *tone_type, char *voice_change)
+int ReadClause(Translator *tr, char *buf, short *charix, int *charix_top, int n_buf, int *tone_type, char *voice_change)
 {
 	/* Find the end of the current clause.
 	    Write the clause into  buf
 	*tone_type = 0;
 	*voice_change = 0;
 
-	f_input = f_in; // for GetC etc
-
 	if (ungot_word != NULL) {
 		strcpy(buf, ungot_word);
 		ix += strlen(ungot_word);

src/libespeak-ng/speech.c

 	if (translator == NULL)
 		espeak_SetVoiceByName("default");
 
-	SpeakNextClause(NULL, text, 0);
+	SpeakNextClause(text, 0);
 
 	for (;;) {
 		out_ptr = outbuf;
 		} else if (synth_callback)
 			finished = synth_callback((short *)outbuf, length, event_list);
 		if (finished) {
-			SpeakNextClause(NULL, 0, 2); // stop
+			SpeakNextClause(0, 2); // stop
 			return ENS_SPEECH_STOPPED;
 		}
 
 				event_list[0].unique_identifier = my_unique_identifier;
 				event_list[0].user_data = my_user_data;
 
-				if (SpeakNextClause(NULL, NULL, 1) == 0) {
+				if (SpeakNextClause(NULL, 1) == 0) {
 					finished = 0;
 					if ((my_mode & ENOUTPUT_MODE_SPEAK_AUDIO) == ENOUTPUT_MODE_SPEAK_AUDIO) {
 						if (dispatch_audio(NULL, 0, NULL) < 0)
 					} else if (synth_callback)
 						finished = synth_callback(NULL, 0, event_list); // NULL buffer ptr indicates end of data
 					if (finished) {
-						SpeakNextClause(NULL, 0, 2); // stop
+						SpeakNextClause(0, 2); // stop
 						return ENS_SPEECH_STOPPED;
 					}
 					return ENS_OK;
 	 */
 
 	option_multibyte = textmode & 7;
-	*textptr = TranslateClause(translator, NULL, *textptr, NULL, NULL);
+	*textptr = TranslateClause(translator, *textptr, NULL, NULL);
 	return GetTranslatedPhonemeString(phonememode);
 }
 

src/libespeak-ng/synthesize.c

 	return 0; // finished the phoneme list
 }
 
-int SpeakNextClause(FILE *f_in, const void *text_in, int control)
+int SpeakNextClause(const void *text_in, int control)
 {
-	// Speak text from file (f_in) or memory (text_in)
+	// Speak text from memory (text_in)
 	// control 0: start
-	//    either f_in or text_in is set, the other must be NULL
+	//    text_in is set
 
-	// The other calls have f_in and text_in = NULL
+	// The other calls have text_in = NULL
 	// control 1: speak next text
 	//         2: stop
 
 	int clause_tone;
 	char *voice_change;
-	static FILE *f_text = NULL;
 	static const void *p_text = NULL;
 	const char *phon_out;
 
 	if (control == 2) {
 		// stop speaking
 		p_text = NULL;
-		if (f_text != NULL) {
-			fclose(f_text);
-			f_text = NULL;
-		}
 		n_phoneme_list = 0;
 		WcmdqStop();
 
 		return 0;
 	}
 
-	if ((f_in != NULL) || (text_in != NULL)) {
-		f_text = f_in;
+	if (text_in != NULL) {
 		p_text = text_in;
 	}
 
-	if ((f_text == NULL) && (p_text == NULL)) {
+	if (p_text == NULL) {
 		skipping_text = 0;
 		return 0;
 	}
 
-	if ((f_text != NULL) && feof(f_text)) {
-		fclose(f_text);
-		f_text = NULL;
-		return 0;
-	}
-
 	if (current_phoneme_table != voice->phoneme_tab_ix)
 		SelectPhonemeTable(voice->phoneme_tab_ix);
 
 	// read the next clause from the input text file, translate it, and generate
 	// entries in the wavegen command queue
-	p_text = TranslateClause(translator, f_text, p_text, &clause_tone, &voice_change);
+	p_text = TranslateClause(translator, p_text, &clause_tone, &voice_change);
 
 	CalcPitches(translator, clause_tone);
 	CalcLengths(translator);

src/libespeak-ng/synthesize.h

 void SynthesizeInit(void);
 int  Generate(PHONEME_LIST *phoneme_list, int *n_ph, int resume);
 void MakeWave2(PHONEME_LIST *p, int n_ph);
-int  SpeakNextClause(FILE *f_text, const void *text_in, int control);
+int  SpeakNextClause(const void *text_in, int control);
 void SetSpeed(int control);
 void SetEmbedded(int control, int value);
 void SelectPhonemeTable(int number);

src/libespeak-ng/translate.c

 	return 0;
 }
 
-void *TranslateClause(Translator *tr, FILE *f_text, const void *vp_input, int *tone_out, char **voice_change)
+void *TranslateClause(Translator *tr, const void *vp_input, int *tone_out, char **voice_change)
 {
 	int ix;
 	int c;
 
 	for (ix = 0; ix < N_TR_SOURCE; ix++)
 		charix[ix] = 0;
-	terminator = ReadClause(tr, f_text, source, charix, &charix_top, N_TR_SOURCE, &tone2, voice_change_name);
+	terminator = ReadClause(tr, source, charix, &charix_top, N_TR_SOURCE, &tone2, voice_change_name);
 
 	charix[charix_top+1] = 0;
 	charix[charix_top+2] = 0x7fff;

src/libespeak-ng/translate.h

 void SetWordStress(Translator *tr, char *output, unsigned int *dictionary_flags, int tonic, int prev_stress);
 int TranslateRules(Translator *tr, char *p, char *phonemes, int size, char *end_phonemes, int end_flags, unsigned int *dict_flags);
 int TranslateWord(Translator *tr, char *word1, WORD_TAB *wtab, char *word_out);
-void *TranslateClause(Translator *tr, FILE *f_text, const void *vp_input, int *tone, char **voice_change);
-int ReadClause(Translator *tr, FILE *f_in, char *buf, short *charix, int *charix_top, int n_buf, int *tone_type, char *voice_change);
+void *TranslateClause(Translator *tr, const void *vp_input, int *tone, char **voice_change);
+int ReadClause(Translator *tr, char *buf, short *charix, int *charix_top, int n_buf, int *tone_type, char *voice_change);
 
 void SetVoiceStack(espeak_VOICE *v, const char *variant_name);
 void InterpretPhoneme(Translator *tr, int control, PHONEME_LIST *plist, PHONEME_DATA *phdata, WORD_PH_DATA *worddata);