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static const TclStubs *
HasStubSupport(
Tcl_Interp *interp,
int magic)
{
Interp *iPtr = (Interp *) interp;
if (iPtr->stubTable && iPtr->stubTable->magic == magic
&& iPtr->stubTable->magic == TCL_STUB_MAGIC) {
return iPtr->stubTable;
}
iPtr->result = (char *) "interpreter uses an incompatible stubs mechanism";
iPtr->freeProc = TCL_STATIC;
return NULL;
}
/*
* Use our own isdigit to avoid linking to libc on windows
*/
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static const TclStubs *
HasStubSupport(
Tcl_Interp *interp,
int magic)
{
Interp *iPtr = (Interp *) interp;
if (iPtr->stubTable && iPtr->stubTable->magic == magic) {
return iPtr->stubTable;
}
iPtr->legacyResult
= "interpreter uses an incompatible stubs mechanism";
iPtr->legacyFreeProc = 0; /* TCL_STATIC */
return NULL;
}
/*
* Use our own isdigit to avoid linking to libc on windows
*/
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TclInitStubs(
Tcl_Interp *interp,
const char *version,
int exact,
const char *tclversion,
int magic)
{
const char *p;
char *q;
char major[TCL_INTEGER_SPACE];
ClientData pkgData = NULL;
Interp *iPtr = (Interp *) interp;
tclStubsPtr = HasStubSupport(interp, magic);
if (!tclStubsPtr) {
return NULL;
}
/*
* Check that the [load]ing interp and [load]ed extension were compiled
* against headers from the same major version of Tcl. If not, they
* will not agree on the layout of the stubs and will crash. Report
* the error instead of crashing.
*/
p = tclversion;
q = major;
while (isDigit(*p)) {
*q++ = *p++;
if (q-major > TCL_INTEGER_SPACE) {
iPtr->result = (char *) "major version overflow";
iPtr->freeProc = TCL_STATIC;
return NULL;
}
}
*q = '\0';
if (NULL == Tcl_PkgRequireEx(interp, "Tcl", major, 0, NULL)) {
return NULL;
}
/*
* Check satisfaction of the requirement requested by the caller.
*/
Tcl_PkgRequireEx(interp, "Tcl", version, 0, &pkgData);
p = version;
q = actualVersion;
p = version;
while (*p && (*p == *q)) {
p++; q++;
}
if (*p || isDigit(*q)) {
/* Construct error message */
Tcl_PkgRequireEx(interp, "Tcl", version, 1, NULL);
return NULL;
}
} else {
actualVersion = Tcl_PkgRequireEx(interp, "Tcl", version, 1, NULL);
if (actualVersion == NULL) {
return NULL;
}
}
}
tclStubsPtr = (TclStubs *) pkgData;
if (tclStubsPtr->hooks) {
tclPlatStubsPtr = tclStubsPtr->hooks->tclPlatStubs;
tclIntStubsPtr = tclStubsPtr->hooks->tclIntStubs;
tclIntPlatStubsPtr = tclStubsPtr->hooks->tclIntPlatStubs;
} else {
tclPlatStubsPtr = NULL;
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TclInitStubs(
Tcl_Interp *interp,
const char *version,
int exact,
const char *tclversion,
int magic)
{
const char *actualVersion = NULL;
const 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]
*/
stubsPtr = HasStubSupport(interp, magic);
if (!stubsPtr) {
return NULL;
}
actualVersion = stubsPtr->tcl_PkgRequireEx(interp, "Tcl", version, 0, NULL);
if (actualVersion == NULL) {
return NULL;
}
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;
tclIntStubsPtr = tclStubsPtr->hooks->tclIntStubs;
tclIntPlatStubsPtr = tclStubsPtr->hooks->tclIntPlatStubs;
} else {
tclPlatStubsPtr = NULL;
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