1 files changed, 129 insertions, 0 deletions
diff --git a/generic/tclStubLib.c b/generic/tclStubLib.c
new file mode 100644
index 0000000..5261591
--- /dev/null
+++ b/generic/tclStubLib.c
@@ -0,0 +1,129 @@
+/*
+ * tclStubLib.c --
+ *
+ *	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.
+ */
+
+#include "tclInt.h"
+
+MODULE_SCOPE const TclStubs *tclStubsPtr;
+MODULE_SCOPE const TclPlatStubs *tclPlatStubsPtr;
+MODULE_SCOPE const TclIntStubs *tclIntStubsPtr;
+MODULE_SCOPE const TclIntPlatStubs *tclIntPlatStubsPtr;
+
+const TclStubs *tclStubsPtr = NULL;
+const TclPlatStubs *tclPlatStubsPtr = NULL;
+const TclIntStubs *tclIntStubsPtr = NULL;
+const TclIntPlatStubs *tclIntPlatStubsPtr = NULL;
+
+/*
+ * Use our own ISDIGIT to avoid linking to libc on windows
+ */
+
+#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.
+ *
+ * Results:
+ *	The actual version of Tcl that satisfies the request, or NULL to
+ *	indicate that an error occurred.
+ *
+ * Side effects:
+ *	Sets the stub table pointers.
+ *
+ *----------------------------------------------------------------------
+ */
+#undef Tcl_InitStubs
+MODULE_SCOPE const char *
+Tcl_InitStubs(
+    Tcl_Interp *interp,
+    const char *version,
+    int exact,
+    int magic)
+{
+    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]
+     */
+
+    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 = stubsPtr->tcl_PkgRequireEx(interp, "Tcl", version, 0, &pkgData);
+    if (actualVersion == 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 (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:
+ */