Move our own getopt() implementation to _PyOS_GetOpt(), and use it

regardless of whether the system getopt() does what we want. This avoids the
hassle with prototypes and externs, and the check to see if the system
getopt() does what we want. Prefix optind, optarg and opterr with _PyOS_ to
avoid name clashes. Add new include file to define the right symbols. Fix
Demo/pyserv/pyserv.c to include getopt.h itself, instead of relying on
Python to provide it.

Author: Yhg1s

Demo/pysvr/pysvr.c

@@ -19,6 +19,7 @@ can log in on your machine.  Use with caution!
 #include <netinet/in.h>
 
 #include <pthread.h>
+#include <getopt.h>
 
 /* XXX Umpfh.
    Python.h defines a typedef destructor, which conflicts with pthread.h.
@@ -32,10 +33,6 @@ extern int Py_VerboseFlag;
 #define PORT 4000
 #endif
 
-extern int optind;
-extern char *optarg;
-extern int getopt(int, char **, char *);
-
 struct workorder {
 	int conn;
 	struct sockaddr_in addr;

Include/pygetopt.h

@@ -0,0 +1,17 @@
+
+#ifndef Py_PYGETOPT_H
+#define Py_PYGETOPT_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern DL_IMPORT(int) _PyOS_opterr;
+extern DL_IMPORT(int) _PyOS_optind;
+extern DL_IMPORT(char *) _PyOS_optarg;
+
+DL_IMPORT(int) _PyOS_GetOpt(int argc, char **argv, char *optstring);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_PYGETOPT_H */

Modules/main.c

@@ -17,15 +17,11 @@
 #define PYTHONHOMEHELP "<prefix>/python2.0"
 #endif
 
+#include "pygetopt.h"
+
 #define COPYRIGHT \
     "Type \"copyright\", \"credits\" or \"license\" for more information."
 
-/* Interface to getopt(): */
-extern int optind;
-extern char *optarg;
-extern int getopt(); /* PROTO((int, char **, char *)); -- not standardized */
-
-
 /* For Py_GetArgcArgv(); set by main() */
 static char **orig_argv;
 static int  orig_argc;
@@ -105,16 +101,16 @@ Py_Main(int argc, char **argv)
 	if ((p = getenv("PYTHONUNBUFFERED")) && *p != '\0')
 		unbuffered = 1;
 
-	while ((c = getopt(argc, argv, "c:diOStuUvxXhV")) != EOF) {
+	while ((c = _PyOS_GetOpt(argc, argv, "c:diOStuUvxXhV")) != EOF) {
 		if (c == 'c') {
 			/* -c is the last option; following arguments
 			   that look like options are left for the
 			   the command to interpret. */
-			command = malloc(strlen(optarg) + 2);
+			command = malloc(strlen(_PyOS_optarg) + 2);
 			if (command == NULL)
 				Py_FatalError(
 				   "not enough memory to copy -c argument");
-			strcpy(command, optarg);
+			strcpy(command, _PyOS_optarg);
 			strcat(command, "\n");
 			break;
 		}
@@ -181,10 +177,10 @@ Py_Main(int argc, char **argv)
 		exit(0);
 	}
 
-	if (command == NULL && optind < argc &&
-	    strcmp(argv[optind], "-") != 0)
+	if (command == NULL && _PyOS_optind < argc &&
+	    strcmp(argv[_PyOS_optind], "-") != 0)
 	{
-		filename = argv[optind];
+		filename = argv[_PyOS_optind];
 		if (filename != NULL) {
 			if ((fp = fopen(filename, "r")) == NULL) {
 				fprintf(stderr, "%s: can't open file '%s'\n",
@@ -253,12 +249,12 @@ Py_Main(int argc, char **argv)
 
 
 	if (command != NULL) {
-		/* Backup optind and force sys.argv[0] = '-c' */
-		optind--;
-		argv[optind] = "-c";
+		/* Backup _PyOS_optind and force sys.argv[0] = '-c' */
+		_PyOS_optind--;
+		argv[_PyOS_optind] = "-c";
 	}
 
-	PySys_SetArgv(argc-optind, argv+optind);
+	PySys_SetArgv(argc-_PyOS_optind, argv+_PyOS_optind);
 
 	if ((inspect || (command == NULL && filename == NULL)) &&
 	    isatty(fileno(stdin))) {

Python/Makefile.in

@@ -46,7 +46,7 @@ AROBJS=		\
 		marshal.o modsupport.o mystrtoul.o \
 		pyfpe.o pystate.o pythonrun.o \
 		structmember.o sysmodule.o \
-		traceback.o \
+		traceback.o getopt.o \
 		$(DYNLOADFILE) \
 		$(LIBOBJS)
 OBJS=		$(AROBJS) sigcheck.o

Python/getopt.c

@@ -27,68 +27,55 @@
 #include <stdio.h>
 #include <string.h>
 
-#define bool	int
-#ifndef TRUE
-#define TRUE	1
-#endif
-#ifndef FALSE
-#define FALSE	0
-#endif
+int _PyOS_opterr = 1;          /* generate error messages */
+int _PyOS_optind = 1;          /* index into argv array   */
+char *_PyOS_optarg = NULL;     /* optional argument       */
 
-bool    opterr = TRUE;          /* generate error messages */
-int     optind = 1;             /* index into argv array   */
-char *  optarg = NULL;          /* optional argument       */
-
-
-#ifndef __BEOS__
-int getopt(int argc, char *argv[], char optstring[])
-#else
-int getopt(int argc, char *const *argv, const char *optstring)
-#endif
+int _PyOS_GetOpt(int argc, char **argv, char *optstring)
 {
-	static   char *opt_ptr = "";
-	register char *ptr;
-			 int   option;
+	static char *opt_ptr = "";
+	char *ptr;
+	int option;
 
 	if (*opt_ptr == '\0') {
 
-		if (optind >= argc || argv[optind][0] != '-' ||
-		    argv[optind][1] == '\0' /* lone dash */ )
+		if (_PyOS_optind >= argc || argv[_PyOS_optind][0] != '-' ||
+		    argv[_PyOS_optind][1] == '\0' /* lone dash */ )
 			return -1;
 
-		else if (strcmp(argv[optind], "--") == 0) {
-			++optind;
+		else if (strcmp(argv[_PyOS_optind], "--") == 0) {
+			++_PyOS_optind;
 			return -1;
 		}
 
-		opt_ptr = &argv[optind++][1]; 
+		opt_ptr = &argv[_PyOS_optind++][1]; 
 	}
 
 	if ( (option = *opt_ptr++) == '\0')
-	  return -1;
+		return -1;
 
 	if ((ptr = strchr(optstring, option)) == NULL) {
-		if (opterr)
+		if (_PyOS_opterr)
 			fprintf(stderr, "Unknown option: -%c\n", option);
 
 		return '?';
 	}
 
 	if (*(ptr + 1) == ':') {
 		if (*opt_ptr != '\0') {
-			optarg  = opt_ptr;
+			_PyOS_optarg  = opt_ptr;
 			opt_ptr = "";
 		}
 
 		else {
-			if (optind >= argc) {
-				if (opterr)
+			if (_PyOS_optind >= argc) {
+				if (_PyOS_opterr)
 					fprintf(stderr,
 			    "Argument expected for the -%c option\n", option);
 				return '?';
 			}
 
-			optarg = argv[optind++];
+			_PyOS_optarg = argv[_PyOS_optind++];
 		}
 	}