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authorjan.nijtmans <nijtmans@users.sourceforge.net>2012-12-07 21:28:49 (GMT)
committerjan.nijtmans <nijtmans@users.sourceforge.net>2012-12-07 21:28:49 (GMT)
commite76d16d3eba7f034fc003f1061736c298b03c74f (patch)
tree47575dea7373a49086aa3154a6472d2deba8e0f8 /generic
parentb222d2f2b2dbf7666e44385dc825b59b5045b3f2 (diff)
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only set tclStubsPtr if all version checks pass. Backported from tcl 8.5.
Diffstat (limited to 'generic')
-rw-r--r--generic/tclStubLib.c105
1 files changed, 62 insertions, 43 deletions
diff --git a/generic/tclStubLib.c b/generic/tclStubLib.c
index 7bf04a0..39e94c8 100644
--- a/generic/tclStubLib.c
+++ b/generic/tclStubLib.c
@@ -1,45 +1,26 @@
-/*
+/*
* 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.
- */
-
-/*
- * 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.
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
-#ifndef USE_TCL_STUBS
-#define USE_TCL_STUBS
-#endif
-#undef USE_TCL_STUB_PROCS
-
#include "tclInt.h"
#include "tclPort.h"
-/*
- * Ensure that Tcl_InitStubs is built as an exported symbol. The other stub
- * functions should be built as non-exported symbols.
- */
-
TclStubs *tclStubsPtr = NULL;
TclPlatStubs *tclPlatStubsPtr = NULL;
TclIntStubs *tclIntStubsPtr = NULL;
TclIntPlatStubs *tclIntPlatStubsPtr = NULL;
-static TclStubs * HasStubSupport _ANSI_ARGS_((Tcl_Interp *interp));
-
static TclStubs *
-HasStubSupport (interp)
+HasStubSupport(interp)
Tcl_Interp *interp;
{
Interp *iPtr = (Interp *) interp;
@@ -49,57 +30,87 @@ HasStubSupport (interp)
}
interp->result = "interpreter uses an incompatible stubs mechanism";
interp->freeProc = TCL_STATIC;
-
return NULL;
}
/*
+ * Use our own isdigit to avoid linking to libc on windows
+ */
+
+static int isDigit(const int c)
+{
+ return (c >= '0' && c <= '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_InitStubs(interp, version, exact)
Tcl_Interp *interp;
CONST char *version;
int exact;
{
CONST char *actualVersion = NULL;
- ClientData pkgData = NULL;
+ TclStubs *stubsPtr;
/*
- * 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) {
+ stubsPtr = HasStubSupport(interp);
+ if (!stubsPtr) {
return NULL;
}
- actualVersion = Tcl_PkgRequireEx(interp, "Tcl", version, exact, &pkgData);
+ actualVersion = stubsPtr->tcl_PkgRequireEx(interp, "Tcl", version, 0, NULL);
if (actualVersion == NULL) {
return NULL;
}
- tclStubsPtr = (TclStubs*)pkgData;
+ if (exact) {
+ 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;
+ }
+ }
+ }
+ tclStubsPtr = stubsPtr;
if (tclStubsPtr->hooks) {
tclPlatStubsPtr = tclStubsPtr->hooks->tclPlatStubs;
@@ -110,6 +121,14 @@ Tcl_InitStubs (interp, version, exact)
tclIntStubsPtr = NULL;
tclIntPlatStubsPtr = NULL;
}
-
+
return actualVersion;
}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */