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authorjan.nijtmans <nijtmans@users.sourceforge.net>2013-01-04 13:17:39 (GMT)
committerjan.nijtmans <nijtmans@users.sourceforge.net>2013-01-04 13:17:39 (GMT)
commitcbfd21a1c2d61e7de46d83c6b3d22a30e8c5fc00 (patch)
treec8d02d90b5f30aa8072ed83dc30bcc2fc4007994
parentcb1ccaf7595262ef003dba2b512b7b0bbe9fe88f (diff)
parent4551ee01fdb87993393cada28619e2dd32762432 (diff)
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Restructure Tk's stub library: No longer use Tcl_SetResult() for setting the error message,
but Tcl_ResetResult/Tcl_AppendResult, as all other stub libraries do. This will allow us to remove Tcl_SetResult() in Tcl 9.0, eventually. More structural improvements, taken over from Tcl 8.6's tclOOStubLib.c/tclTomMathStubLib.c and from Tk 8.6's tclStubLib.c
-rw-r--r--generic/tkStubLib.c111
1 files changed, 51 insertions, 60 deletions
diff --git a/generic/tkStubLib.c b/generic/tkStubLib.c
index 5349a0b..f605b5d 100644
--- a/generic/tkStubLib.c
+++ b/generic/tkStubLib.c
@@ -1,33 +1,16 @@
/*
* tkStubLib.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 Tk.
*
- * Copyright (c) 1998 Paul Duffin.
* 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 Tk_InitStubs but doesn't end up
- * including the rest of the stub functions.
- */
-
-#ifndef USE_TCL_STUBS
-#define USE_TCL_STUBS
-#endif
-#undef USE_TCL_STUB_PROCS
-
-#ifndef USE_TK_STUBS
-#define USE_TK_STUBS
-#endif
-#undef USE_TK_STUB_PROCS
-
#include "tkInt.h"
#ifdef __WIN32__
@@ -56,7 +39,8 @@ TkIntXlibStubs *tkIntXlibStubsPtr = NULL;
* Use our own isdigit to avoid linking to libc on windows
*/
-static int isDigit(const int c)
+static int
+isDigit(const int c)
{
return (c >= '0' && c <= '9');
}
@@ -78,66 +62,73 @@ static int isDigit(const int c)
*
*----------------------------------------------------------------------
*/
-
-#ifdef Tk_InitStubs
#undef Tk_InitStubs
-#endif
-
CONST char *
Tk_InitStubs(
Tcl_Interp *interp,
CONST char *version,
int exact)
{
- CONST char *actualVersion;
- TkStubs **stubsPtrPtr = &tkStubsPtr; /* squelch warning */
-
- actualVersion = Tcl_PkgRequireEx(interp, "Tk", version, 0,
- (ClientData *) stubsPtrPtr);
- if (!actualVersion) {
+ const char *packageName = "Tk";
+ const char *errMsg = NULL;
+ ClientData clientData = NULL;
+ CONST char *actualVersion = tclStubsPtr->tcl_PkgRequireEx(interp,
+ packageName, version, 0, &clientData);
+ TkStubs *stubsPtr = (TkStubs *)clientData;
+
+ if (actualVersion == NULL) {
return NULL;
}
+
if (exact) {
- CONST char *p = version;
- int count = 0;
+ CONST char *p = version;
+ int count = 0;
- while (*p) {
- count += !isDigit(*p++);
- }
- if (count == 1) {
+ while (*p) {
+ count += !isDigit(*p++);
+ }
+ if (count == 1) {
CONST char *q = actualVersion;
p = version;
while (*p && (*p == *q)) {
p++; q++;
}
- if (*p) {
+ if (*p || isDigit(*q)) {
/* Construct error message */
- Tcl_PkgRequireEx(interp, "Tk", version, 1, NULL);
- return NULL;
-
- }
- } else {
- actualVersion = Tcl_PkgRequireEx(interp, "Tk", version, 1, NULL);
- if (actualVersion == NULL) {
- return NULL;
- }
- }
+ tclStubsPtr->tcl_PkgRequireEx(interp, "Tk", version, 1, NULL);
+ return NULL;
+ }
+ } else {
+ actualVersion = tclStubsPtr->tcl_PkgRequireEx(interp, "Tk",
+ version, 1, NULL);
+ if (actualVersion == NULL) {
+ return NULL;
+ }
+ }
}
-
- if (!tkStubsPtr) {
- Tcl_SetResult(interp,
- "This implementation of Tk does not support stubs",
- TCL_STATIC);
- return NULL;
+ if (stubsPtr == NULL) {
+ errMsg = "missing stub table pointer";
+ } else {
+ tkStubsPtr = stubsPtr;
+ if (stubsPtr->hooks) {
+ tkPlatStubsPtr = stubsPtr->hooks->tkPlatStubs;
+ tkIntStubsPtr = stubsPtr->hooks->tkIntStubs;
+ tkIntPlatStubsPtr = stubsPtr->hooks->tkIntPlatStubs;
+ tkIntXlibStubsPtr = stubsPtr->hooks->tkIntXlibStubs;
+ } else {
+ tkPlatStubsPtr = NULL;
+ tkIntStubsPtr = NULL;
+ tkIntPlatStubsPtr = NULL;
+ tkIntXlibStubsPtr = NULL;
+ }
+ return actualVersion;
}
-
- tkPlatStubsPtr = tkStubsPtr->hooks->tkPlatStubs;
- tkIntStubsPtr = tkStubsPtr->hooks->tkIntStubs;
- tkIntPlatStubsPtr = tkStubsPtr->hooks->tkIntPlatStubs;
- tkIntXlibStubsPtr = tkStubsPtr->hooks->tkIntXlibStubs;
-
- return actualVersion;
+ tclStubsPtr->tcl_ResetResult(interp);
+ tclStubsPtr->tcl_AppendResult(interp, "Error loading ", packageName,
+ " (requested version ", version, ", actual version ",
+ actualVersion, "): ", errMsg, NULL);
+ return NULL;
}
/*