Use errno codes in place of ENE_(READ|WRITE)_ERROR.

src/include/espeak-ng/espeak_ng.h

 
 	/* Error Codes (< 0) */
 
-	ENE_READ_ERROR = -1,
-	ENE_WRITE_ERROR = -2,
 	ENE_COMPILE_ERRORS = -4,
 	ENE_VERSION_MISMATCH = -5,
 } espeak_ng_STATUS;

src/libespeak-ng/compiledata.c

 /*
  * Copyright (C) 2005 to 2014 by Jonathan Duddington
  * email: [email protected]
- * Copyright (C) 2013-2015 Reece H. Dunn
+ * Copyright (C) 2013-2016 Reece H. Dunn
  *
  * 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
 
 	if (!access(fname, 755)) {
 		fprintf(log, "Can't find phoneme source directory: %s\n", fname);
-		return ENE_READ_ERROR;
+		return errno;
 	}
 
 	strncpy0(current_fname, source, sizeof(current_fname));
 	f_in = fopen_log(f_errors, fname, "rb");
 	if (f_in == NULL) {
 		fprintf(log, "Can't read master phonemes file: %s\n", fname);
-		return ENE_READ_ERROR;
+		return errno;
 	}
 
 	sprintf(fname, "%s/../phsource/%s", path_home, "compile_report");
 	f_phtab = fopen_log(f_errors, fname, "wb");
 
 	if (f_phdata == NULL || f_phindex == NULL || f_phtab == NULL)
-		return ENE_WRITE_ERROR;
+		return errno;
 
 	sprintf(fname, "%s/../phsource/compile_prog_log", path_home);
 	f_prog_log = fopen_log(f_errors, fname, "wb");
 	if ((f_in = fopen(buf, "r")) == NULL) {
 		sprintf(buf, "%s/../phsource/intonation", path_home);
 		if ((f_in = fopen_log(f_errors, buf, "r")) == NULL) {
+			int error = errno;
 			fprintf(log, "Can't read file: %s\n", buf);
 			fclose(f_errors);
-			return ENE_READ_ERROR;
+			return error;
 		}
 	}
 
 	sprintf(buf, "%s/intonations", path_home);
 	f_out = fopen_log(f_errors, buf, "wb");
 	if (f_out == NULL) {
+		int error = errno;
 		fclose(f_in);
 		fclose(f_errors);
 		free(tune_data);
-		return ENE_WRITE_ERROR;
+		return error;
 	}
 
 	while (!feof(f_in)) {

src/libespeak-ng/compiledict.c

 /*
  * Copyright (C) 2005 to 2014 by Jonathan Duddington
  * email: [email protected]
- * Copyright (C) 2015 Reece H. Dunn
+ * Copyright (C) 2015-2016 Reece H. Dunn
  *
  * 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
 
 #include "config.h"
 
+#include <errno.h>
 #include <stdio.h>
 #include <ctype.h>
 #include <stdlib.h>
 	if ((f_in = fopen(fname_in, "r")) == NULL) {
 		sprintf(fname_in, "%srules", path);
 		if ((f_in = fopen_log(fname_in, "r")) == NULL)
-			return ENE_READ_ERROR;
+			return errno;
 	}
 
 	sprintf(fname_out, "%s%c%s_dict", path_home, PATHSEP, dict_name);
 	if ((f_out = fopen_log(fname_out, "wb+")) == NULL) {
+		int error = errno;
 		fclose(f_in);
-		return ENE_WRITE_ERROR;
+		return error;
 	}
 	sprintf(fname_temp, "%s%ctemp", path_home, PATHSEP);
 

src/libespeak-ng/compilembrola.c

 /*
  * Copyright (C) 2005 to 2014 by Jonathan Duddington
  * email: [email protected]
- * Copyright (C) 2013-2015 Reece H. Dunn
+ * Copyright (C) 2013-2016 Reece H. Dunn
  *
  * 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
 
 #include "config.h"
 
+#include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 	strcpy(buf, filepath);
 	if ((f_in = fopen(buf, "r")) == NULL) {
 		fprintf(log, "Can't read: %s\n", filepath);
-		return ENE_READ_ERROR;
+		return errno;
 	}
 
 	while (fgets(buf, sizeof(phoneme), f_in) != NULL) {
 	sprintf(buf, "%s/mbrola_ph/%s_phtrans", path_home, mbrola_voice);
 	if ((f_out = fopen(buf, "wb")) == NULL) {
 		fprintf(log, "Can't write to: %s\n", buf);
-		return ENE_WRITE_ERROR;
+		return errno;
 	}
 
 	data[count].name = 0; // list terminator