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/*
* bufStubLib.c --
*
* Stub object that will be statically linked into extensions that wish
* to access Buf.
*/
/*
* 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 Buf_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_BUF_STUBS
#define USE_BUF_STUBS
#endif
#undef USE_BUF_STUB_PROCS
#include "buf.h"
#include "bufIntDecls.h"
/*
* Ensure that Buf_InitStubs is built as an exported symbol. The other stub
* functions should be built as non-exported symbols.
*/
#undef TCL_STORAGE_CLASS
#define TCL_STORAGE_CLASS DLLEXPORT
BufStubs *bufStubsPtr;
BufIntStubs *bufIntStubsPtr;
/*
*----------------------------------------------------------------------
*
* Buf_InitStubs --
*
* Checks that the correct version of Buf is loaded and that it
* supports stubs. It then initialises the stub table pointers.
*
* Results:
* The actual version of Buf that satisfies the request, or
* NULL to indicate that an error occurred.
*
* Side effects:
* Sets the stub table pointers.
*
*----------------------------------------------------------------------
*/
#ifdef Buf_InitStubs
#undef Buf_InitStubs
#endif
char *
Buf_InitStubs(interp, version, exact)
Tcl_Interp *interp;
CONST char *version;
int exact;
{
CONST char *actualVersion;
/* ** NOTE ** the speciality:
* The interface 'Buf' is provided by the package 'Memchan'.
*/
actualVersion = Tcl_PkgRequireEx(interp, "Memchan", MC_UNCONSTB84 version,
exact, (ClientData *) &bufStubsPtr);
if (!actualVersion) {
return NULL;
}
if (!bufStubsPtr) {
Tcl_SetResult(interp,
"This implementation of Buf does not support stubs",
TCL_STATIC);
return NULL;
}
bufIntStubsPtr = bufStubsPtr->hooks->bufIntStubs;
return (char*) actualVersion;
}
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