1 files changed, 80 insertions, 72 deletions

diff --git a/generic/tclStubLib.c b/generic/tclStubLib.c
index c650dac..5261591 100644
--- a/generic/tclStubLib.c
+++ b/generic/tclStubLib.c
@@ -1,121 +1,129 @@
-/* 
+/*
  * tclStubLib.c --
  *
- *	Stub object that will be statically linked into extensions that wish
+ *	Stub object that will be statically linked into extensions that want
  *	to access Tcl.
  *
  * Copyright (c) 1998-1999 by Scriptics Corporation.
  * Copyright (c) 1998 Paul Duffin.
  *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- *
- * RCS: @(#) $Id: tclStubLib.c,v 1.6 2002/12/04 07:07:59 hobbs Exp $
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  */
 
-/*
- * We need to ensure that we use the stub macros so that this file contains
- * no references to any of the stub functions.  This will make it possible
- * to build an extension that references Tcl_InitStubs but doesn't end up
- * including the rest of the stub functions.
- */
+#include "tclInt.h"
 
-#ifndef USE_TCL_STUBS
-#define USE_TCL_STUBS
-#endif
-#undef USE_TCL_STUB_PROCS
+MODULE_SCOPE const TclStubs *tclStubsPtr;
+MODULE_SCOPE const TclPlatStubs *tclPlatStubsPtr;
+MODULE_SCOPE const TclIntStubs *tclIntStubsPtr;
+MODULE_SCOPE const TclIntPlatStubs *tclIntPlatStubsPtr;
 
-#include "tclInt.h"
-#include "tclPort.h"
+const TclStubs *tclStubsPtr = NULL;
+const TclPlatStubs *tclPlatStubsPtr = NULL;
+const TclIntStubs *tclIntStubsPtr = NULL;
+const TclIntPlatStubs *tclIntPlatStubsPtr = NULL;
 
 /*
- * Ensure that Tcl_InitStubs is built as an exported symbol.  The other stub
- * functions should be built as non-exported symbols.
+ * Use our own ISDIGIT to avoid linking to libc on windows
  */
 
-#undef TCL_STORAGE_CLASS
-#define TCL_STORAGE_CLASS DLLEXPORT
-
-TclStubs *tclStubsPtr = NULL;
-TclPlatStubs *tclPlatStubsPtr = NULL;
-TclIntStubs *tclIntStubsPtr = NULL;
-TclIntPlatStubs *tclIntPlatStubsPtr = NULL;
-
-static TclStubs *	HasStubSupport _ANSI_ARGS_((Tcl_Interp *interp));
-
-static TclStubs *
-HasStubSupport (interp)
-    Tcl_Interp *interp;
-{
-    Interp *iPtr = (Interp *) interp;
-
-    if (iPtr->stubTable && (iPtr->stubTable->magic == TCL_STUB_MAGIC)) {
-	return iPtr->stubTable;
-    }
-    interp->result = "This interpreter does not support stubs-enabled extensions.";
-    interp->freeProc = TCL_STATIC;
-
-    return NULL;
-}
+#define ISDIGIT(c) (((unsigned)((c)-'0')) <= 9)
 
 /*
  *----------------------------------------------------------------------
  *
  * Tcl_InitStubs --
  *
- *	Tries to initialise the stub table pointers and ensures that
- *	the correct version of Tcl is loaded.
+ *	Tries to initialise the stub table pointers and ensures that the
+ *	correct version of Tcl is loaded.
  *
  * Results:
- *	The actual version of Tcl that satisfies the request, or
- *	NULL to indicate that an error occurred.
+ *	The actual version of Tcl that satisfies the request, or NULL to
+ *	indicate that an error occurred.
  *
  * Side effects:
  *	Sets the stub table pointers.
  *
  *----------------------------------------------------------------------
  */
-
-#ifdef Tcl_InitStubs
 #undef Tcl_InitStubs
-#endif
-
-CONST char *
-Tcl_InitStubs (interp, version, exact)
-    Tcl_Interp *interp;
-    CONST char *version;
-    int exact;
+MODULE_SCOPE const char *
+Tcl_InitStubs(
+    Tcl_Interp *interp,
+    const char *version,
+    int exact,
+    int magic)
 {
-    CONST char *actualVersion = NULL;
-    TclStubs *tmp;
+    Interp *iPtr = (Interp *) interp;
+    const char *actualVersion = NULL;
+    ClientData pkgData = NULL;
+    const TclStubs *stubsPtr = iPtr->stubTable;
 
     /*
-     * We can't optimize this check by caching tclStubsPtr because
-     * that prevents apps from being able to load/unload Tcl dynamically
-     * multiple times. [Bug 615304]
+     * We can't optimize this check by caching tclStubsPtr because that
+     * prevents apps from being able to load/unload Tcl dynamically multiple
+     * times. [Bug 615304]
      */
 
-    tclStubsPtr = HasStubSupport(interp);
-    if (!tclStubsPtr) {
+    if (!stubsPtr || (stubsPtr->magic != (((exact&0xff00) >= 0x900) ? magic : TCL_STUB_MAGIC))) {
+	iPtr->result = (char *)"interpreter uses an incompatible stubs mechanism";
+	iPtr->freeProc = 0;
 	return NULL;
     }
 
-    actualVersion = Tcl_PkgRequireEx(interp, "Tcl", version, exact,
-	    (ClientData *) &tmp);
+    actualVersion = stubsPtr->tcl_PkgRequireEx(interp, "Tcl", version, 0, &pkgData);
     if (actualVersion == NULL) {
-	tclStubsPtr = NULL;
 	return NULL;
     }
+    if (exact&1) {
+	const char *p = version;
+	int count = 0;
+
+	while (*p) {
+	    count += !ISDIGIT(*p++);
+	}
+	if (count == 1) {
+	    const char *q = actualVersion;
+
+	    p = version;
+	    while (*p && (*p == *q)) {
+		p++; q++;
+	    }
+	    if (*p || ISDIGIT(*q)) {
+		/* Construct error message */
+		stubsPtr->tcl_PkgRequireEx(interp, "Tcl", version, 1, NULL);
+		return NULL;
+	    }
+	} else {
+	    actualVersion = stubsPtr->tcl_PkgRequireEx(interp, "Tcl", version, 1, NULL);
+	    if (actualVersion == NULL) {
+		return NULL;
+	    }
+	}
+    }
+    if (((exact&0xff00) < 0x900)) {
+	/* We are running Tcl 8.x */
+	stubsPtr = (TclStubs *)pkgData;
+    }
+    tclStubsPtr = stubsPtr;
 
-    if (tclStubsPtr->hooks) {
-	tclPlatStubsPtr = tclStubsPtr->hooks->tclPlatStubs;
-	tclIntStubsPtr = tclStubsPtr->hooks->tclIntStubs;
-	tclIntPlatStubsPtr = tclStubsPtr->hooks->tclIntPlatStubs;
+    if (stubsPtr->hooks) {
+	tclPlatStubsPtr = stubsPtr->hooks->tclPlatStubs;
+	tclIntStubsPtr = stubsPtr->hooks->tclIntStubs;
+	tclIntPlatStubsPtr = stubsPtr->hooks->tclIntPlatStubs;
     } else {
 	tclPlatStubsPtr = NULL;
 	tclIntStubsPtr = NULL;
 	tclIntPlatStubsPtr = NULL;
     }
-    
+
     return actualVersion;
 }
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */