import winsup-2000-02-17 snapshot

winsup/mingw/init.c

@@ -0,0 +1,84 @@
+/*
+ * init.c
+ *
+ * Code to initialize standard file handles and command line arguments.
+ * This file is #included in both crt1.c and dllcrt1.c.
+ *
+ * This file is part of the Mingw32 package.
+ *
+ * Contributors:
+ *  Created by Colin Peters <colin@bird.fu.is.saga-u.ac.jp>
+ *  Maintained by Mumit Khan <khan@xraylith.wisc.EDU>
+ *
+ *  THIS SOFTWARE IS NOT COPYRIGHTED
+ *
+ *  This source code is offered for use in the public domain. You may
+ *  use, modify or distribute it freely.
+ *
+ *  This code is distributed in the hope that it will be useful but
+ *  WITHOUT ANY WARRANTY. ALL WARRENTIES, EXPRESS OR IMPLIED ARE HEREBY
+ *  DISCLAMED. This includes but is not limited to warrenties of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * $Revision$
+ * $Author$
+ * $Date$
+ *
+ */
+
+/*
+ * Access to a standard 'main'-like argument count and list. Also included
+ * is a table of environment variables.
+ */
+int _argc = 0;
+char **_argv = 0;
+
+/* NOTE: Thanks to Pedro A. Aranda Gutiirrez <paag@tid.es> for pointing
+ * this out to me. GetMainArgs (used below) takes a fourth argument
+ * which is an int that controls the globbing of the command line. If
+ * _CRT_glob is non-zero the command line will be globbed (e.g. *.*
+ * expanded to be all files in the startup directory). In the mingw32
+ * library a _CRT_glob variable is defined as being -1, enabling
+ * this command line globbing by default. To turn it off and do all
+ * command line processing yourself (and possibly escape bogons in
+ * MS's globbing code) include a line in one of your source modules
+ * defining _CRT_glob and setting it to zero, like this:
+ *  int _CRT_glob = 0;
+ */
+extern int _CRT_glob;
+
+#ifdef __MSVCRT__
+typedef struct {
+  int newmode;
+} _startupinfo;
+extern void __getmainargs (int *, char ***, char ***, int, _startupinfo *);
+#else
+extern void __GetMainArgs (int *, char ***, char ***, int);
+#endif
+
+/*
+ * Initialize the _argc, _argv and environ variables.
+ */
+static void
+_mingw32_init_mainargs ()
+{
+  /* The environ variable is provided directly in stdlib.h through
+   * a dll function call. */
+  char **dummy_environ;
+#ifdef __MSVCRT__
+  _startupinfo start_info;
+  start_info.newmode = 0;
+#endif
+
+  /*
+   * Microsoft's runtime provides a function for doing just that.
+   */
+#ifdef __MSVCRT__
+  (void) __getmainargs (&_argc, &_argv, &dummy_environ, _CRT_glob, 
+                        &start_info);
+#else
+  /* CRTDLL version */
+  (void) __GetMainArgs (&_argc, &_argv, &dummy_environ, _CRT_glob);
+#endif
+}
+