Use the NetBSD getopt_long implementation on Windows.

This makes the espeak-ng.c and speak-ng.c source code easier to
read and maintain. It also addresses bugs in command-line argument
parsing with the espeak implementation, for example it treats
`--compile-phonemes` as `--compile` due to an argument matching bug.

src/compat/getopt.c

  * POSSIBILITY OF SUCH DAMAGE.
  */
 
-#if HAVE_NBTOOL_CONFIG_H
-#include "nbtool_config.h"
-#endif
-
-#include <sys/cdefs.h>
-__RCSID("$NetBSD: getopt_long.c,v 1.27 2015/09/01 19:39:57 kamil Exp $");
-
-#include "namespace.h"
+#include "config.h"
 
 #include <assert.h>
-#include <err.h>
 #include <errno.h>
-#if HAVE_NBTOOL_CONFIG_H
-#include "compat_getopt.h"
-#else
 #include <getopt.h>
-#endif
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
-#if HAVE_NBTOOL_CONFIG_H && !HAVE_GETOPT_LONG && !HAVE_DECL_OPTIND
 #define REPLACE_GETOPT
-#endif
+
+#define _DIAGASSERT(x) assert(x)
+#define __UNCONST(x) (char *)(x)
 
 #ifdef REPLACE_GETOPT
 #ifdef __weak_alias
 		if (!*place)
 			++optind;
 		if (PRINT_ERROR)
-			warnx(illoptchar, optchar);
+			fprintf(stderr, illoptchar, optchar);
 		optopt = optchar;
 		return BADCH;
 	}
 		if (++optind >= nargc) {	/* no arg */
 			place = EMSG;
 			if (PRINT_ERROR)
-				warnx(recargchar, optchar);
+				fprintf(stderr, recargchar, optchar);
 			optopt = optchar;
 			return BADARG;
 		} else				/* white space */
 			if (++optind >= nargc) {	/* no arg */
 				place = EMSG;
 				if (PRINT_ERROR)
-					warnx(recargchar, optchar);
+					fprintf(stderr, recargchar, optchar);
 				optopt = optchar;
 				return BADARG;
 			} else
 		if (ambiguous) {
 			/* ambiguous abbreviation */
 			if (PRINT_ERROR)
-				warnx(ambig, (int)current_argv_len,
+				fprintf(stderr, ambig, (int)current_argv_len,
 				     current_argv);
 			optopt = 0;
 			return BADCH;
 		        if (long_options[match].has_arg == no_argument
 			    && has_equal) {
 				if (PRINT_ERROR)
-					warnx(noarg, (int)current_argv_len,
+					fprintf(stderr, noarg, (int)current_argv_len,
 					     current_argv);
 				/*
 				 * XXX: GNU sets optopt to val regardless of
 				 * indicates no error should be generated
 				 */
 				if (PRINT_ERROR)
-					warnx(recargstring, current_argv);
+					fprintf(stderr, recargstring, current_argv);
 				/*
 				 * XXX: GNU sets optopt to val regardless
 				 * of flag
 			}
 		} else {			/* unknown option */
 			if (PRINT_ERROR)
-				warnx(illoptstring, current_argv);
+				fprintf(stderr, illoptstring, current_argv);
 			optopt = 0;
 			return BADCH;
 		}

src/espeak-ng.c

 #include <stdlib.h>
 #include <string.h>
 #include <ctype.h>
-#ifdef HAVE_GETOPT_H
 #include <getopt.h>
-#endif
 #include <time.h>
 #include <sys/stat.h>
 
 	printf("eSpeak text-to-speech: %s  Data at: %s\n", version, path_data);
 }
 
-#ifndef HAVE_GETOPT_H
-struct option {
-	char *name;
-	int has_arg;
-	int *flag;
-	int val;
-};
-int optind;
-static int optional_argument;
-static const char *arg_opts = "abdfgklpsvw"; // which options have arguments
-static char *opt_string = "";
-#define no_argument 0
-#define required_argument 1
-#define optional_argument 2
-#endif
-
 int main(int argc, char **argv)
 {
 	static struct option long_options[] = {
 	devicename[0] = 0;
 	option_punctlist[0] = 0;
 
-#ifndef HAVE_GETOPT_H
-	optind = 1;
-	opt_string = "";
-	while (optind < argc) {
-		int len;
-		char *p;
-
-		if ((c = *opt_string) == 0) {
-			opt_string = argv[optind];
-			if (opt_string[0] != '-')
-				break;
-
-			optind++;
-			opt_string++;
-			c = *opt_string;
-		}
-		opt_string++;
-		p = optarg2 = opt_string;
-
-		if (c == '-') {
-			if (p[0] == 0)
-				break; // -- means don't interpret further - as commands
-
-			opt_string = "";
-			for (ix = 0;; ix++) {
-				if (long_options[ix].name == 0)
-					break;
-				len = strlen(long_options[ix].name);
-				if (memcmp(long_options[ix].name, p, len) == 0) {
-					c = long_options[ix].val;
-					optarg2 = NULL;
-
-					if ((long_options[ix].has_arg != 0) && (p[len] == '='))
-						optarg2 = &p[len+1];
-					break;
-				}
-			}
-		} else if (strchr(arg_opts, c) != NULL) {
-			opt_string = "";
-			if (optarg2[0] == 0) {
-				// the option's value is in the next argument
-				optarg2 = argv[optind++];
-			}
-		}
-#else
 	while (true) {
 		c = getopt_long(argc, argv, "a:b:d:f:g:hk:l:mp:qs:v:w:xXz",
 		                long_options, &option_index);
 		if (c == -1)
 			break;
 		optarg2 = optarg;
-#endif
 
 		switch (c)
 		{

src/include/compat/getopt.h

+/* Compatibility shim for <getopt.h>
+ *
+ * Copyright (C) 2006 to 2013 by Jonathan Duddington
+ * email: [email protected]
+ * Copyright (C) 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
+ * 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/>.
+ */
+
+#ifndef GETOPT_H_COMPAT_SHIM
+#define GETOPT_H_COMPAT_SHIM
+
+#if defined(HAVE_GETOPT_H)
+#pragma GCC system_header // Silence "warning: #include_next is a GCC extension"
+#include_next <getopt.h>
+#else
+
+struct option {
+	char *name;
+	int has_arg;
+	int *flag;
+	int val;
+};
+
+extern int optind;
+extern char *optarg;
+
+#define no_argument 0
+#define required_argument 1
+#define optional_argument 2
+
+int
+getopt_long(int nargc, char * const *nargv, const char *options,
+            const struct option *long_options, int *idx);
+
+#endif
+
+#endif

src/speak-ng.c

 #endif
 #endif
 
-#ifdef HAVE_GETOPT_H
 #include <getopt.h>
-#endif
 #include <time.h>
 #include <signal.h>
 #include <locale.h>
 	return finished;
 }
 
-#ifndef HAVE_GETOPT_H
-struct option {
-	char *name;
-	int has_arg;
-	int *flag;
-	int val;
-};
-int optind;
-static int optional_argument;
-static const char *arg_opts = "abfgklpsvw";      // which options have arguments
-static char *opt_string = "";
-#define no_argument 0
-#define required_argument 1
-#define optional_argument 2
-#endif
-
 int main(int argc, char **argv)
 {
 	static struct option long_options[] = {
 	option_multibyte = espeakCHARS_AUTO;
 	f_trans = stdout;
 
-#ifndef HAVE_GETOPT_H
-	optind = 1;
-	opt_string = "";
-	while (optind < argc) {
-		int len;
-		char *p;
-
-		if ((c = *opt_string) == 0) {
-			opt_string = argv[optind];
-			if (opt_string[0] != '-')
-				break;
-
-			optind++;
-			opt_string++;
-			c = *opt_string;
-		}
-		opt_string++;
-		p = optarg2 = opt_string;
-
-		if (c == '-') {
-			if (p[0] == 0)
-				break; // -- means don't interpret further - as commands
-
-			opt_string = "";
-			for (ix = 0;; ix++) {
-				if (long_options[ix].name == 0)
-					break;
-				len = strlen(long_options[ix].name);
-				if (memcmp(long_options[ix].name, p, len) == 0) {
-					c = long_options[ix].val;
-					optarg2 = NULL;
-
-					if ((long_options[ix].has_arg != 0) && (p[len] == '='))
-						optarg2 = &p[len+1];
-					break;
-				}
-			}
-		} else if (strchr(arg_opts, c) != NULL) {
-			opt_string = "";
-			if (optarg2[0] == 0) {
-				// the option's value is in the next argument
-				optarg2 = argv[optind++];
-			}
-		}
-#else
 	while (true) {
 		c = getopt_long(argc, argv, "a:b:f:g:hk:l:p:qs:v:w:xXmz", // NOTE: also change arg_opts to indicate which commands have a numeric value
 		                long_options, &option_index);
 		if (c == -1)
 			break;
 		optarg2 = optarg;
-#endif
 
 		switch (c)
 		{

src/windows/espeak-ng.vcxproj

     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>
+    <ClCompile Include="..\compat\getopt.c" />
     <ClCompile Include="..\espeak-ng.c" />
   </ItemGroup>
   <ItemGroup>
+    <ClInclude Include="..\include\compat\getopt.h" />
     <ClInclude Include="config.h" />
   </ItemGroup>
   <ItemGroup>

src/windows/espeak-ng.vcxproj.filters

       <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
       <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
     </Filter>
+    <Filter Include="Header Files\compat">
+      <UniqueIdentifier>{c530f203-dd49-4aa0-a7a3-5116f781f03c}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="Source Files\compat">
+      <UniqueIdentifier>{2ab8716c-709b-4284-9dc7-ec9610d37eab}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\espeak-ng.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\compat\getopt.c">
+      <Filter>Source Files\compat</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="config.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\include\compat\getopt.h">
+      <Filter>Header Files\compat</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>