mirror of
https://github.com/python/cpython.git
synced 2024-11-24 17:47:13 +01:00
120 lines
3.2 KiB
C
120 lines
3.2 KiB
C
|
|
/* Support for dynamic loading of extension modules */
|
|
|
|
#include "Python.h"
|
|
#include "importdl.h"
|
|
|
|
#include <Aliases.h>
|
|
#include <CodeFragments.h>
|
|
#ifdef USE_GUSI1
|
|
#include "TFileSpec.h" /* for Path2FSSpec() */
|
|
#endif
|
|
#include <Files.h>
|
|
#include <TextUtils.h>
|
|
#include "macdefs.h"
|
|
#include "macglue.h"
|
|
|
|
|
|
const struct filedescr _PyImport_DynLoadFiletab[] = {
|
|
{".slb", "rb", C_EXTENSION},
|
|
#ifdef __CFM68K__
|
|
{".CFM68K.slb", "rb", C_EXTENSION},
|
|
#else
|
|
#if TARGET_API_MAC_CARBON
|
|
{".carbon.slb", "rb", C_EXTENSION},
|
|
#else
|
|
{".ppc.slb", "rb", C_EXTENSION},
|
|
#endif
|
|
#endif
|
|
{0, 0}
|
|
};
|
|
|
|
|
|
dl_funcptr _PyImport_GetDynLoadFunc(const char *fqname, const char *shortname,
|
|
const char *pathname, FILE *fp)
|
|
{
|
|
dl_funcptr p;
|
|
char funcname[258];
|
|
|
|
/*
|
|
** Dynamic loading of CFM shared libraries on the Mac. The
|
|
** code has become more convoluted than it was, because we
|
|
** want to be able to put multiple modules in a single
|
|
** file. For this reason, we have to determine the fragment
|
|
** name, and we cannot use the library entry point but we have
|
|
** to locate the correct init routine "by hand".
|
|
*/
|
|
FSSpec libspec;
|
|
CFragConnectionID connID;
|
|
Ptr mainAddr;
|
|
Str255 errMessage;
|
|
OSErr err;
|
|
#ifndef USE_GUSI1
|
|
Boolean isfolder, didsomething;
|
|
#endif
|
|
char buf[512];
|
|
Str63 fragname;
|
|
Ptr symAddr;
|
|
CFragSymbolClass class;
|
|
|
|
/* First resolve any aliases to find the real file */
|
|
#ifdef USE_GUSI1
|
|
err = Path2FSSpec(pathname, &libspec);
|
|
#else
|
|
c2pstrcpy((unsigned char *)buf, pathname);
|
|
(void)FSMakeFSSpec(0, 0, (unsigned char *)buf, &libspec);
|
|
err = ResolveAliasFile(&libspec, 1, &isfolder, &didsomething);
|
|
#endif
|
|
if ( err ) {
|
|
sprintf(buf, "%.200s: %.200s", pathname, PyMac_StrError(err));
|
|
PyErr_SetString(PyExc_ImportError, buf);
|
|
return NULL;
|
|
}
|
|
/* Next, determine the fragment name,
|
|
by stripping '.slb' and 'module' */
|
|
memcpy(fragname+1, libspec.name+1, libspec.name[0]);
|
|
fragname[0] = libspec.name[0];
|
|
if( strncmp((char *)(fragname+1+fragname[0]-4),
|
|
".slb", 4) == 0 )
|
|
fragname[0] -= 4;
|
|
if ( strncmp((char *)(fragname+1+fragname[0]-6),
|
|
"module", 6) == 0 )
|
|
fragname[0] -= 6;
|
|
/* Load the fragment
|
|
(or return the connID if it is already loaded */
|
|
err = GetDiskFragment(&libspec, 0, 0, fragname,
|
|
kLoadCFrag, &connID, &mainAddr,
|
|
errMessage);
|
|
if ( err == cfragImportTooOldErr || err == cfragImportTooNewErr ) {
|
|
/*
|
|
** Special-case code: if PythonCore is too old or too new this means
|
|
** the dynamic module was meant for a different Python.
|
|
*/
|
|
if (errMessage[0] == 10 && strncmp((char *)errMessage+1, "PythonCore", 10) == 0 ) {
|
|
sprintf(buf, "Dynamic module was built for %s version of MacPython",
|
|
(err == cfragImportTooOldErr ? "a newer" : "an older"));
|
|
PyErr_SetString(PyExc_ImportError, buf);
|
|
return NULL;
|
|
}
|
|
}
|
|
if ( err ) {
|
|
sprintf(buf, "%.*s: %.200s",
|
|
errMessage[0], errMessage+1,
|
|
PyMac_StrError(err));
|
|
PyErr_SetString(PyExc_ImportError, buf);
|
|
return NULL;
|
|
}
|
|
/* Locate the address of the correct init function */
|
|
sprintf(funcname, "init%.200s", shortname);
|
|
err = FindSymbol(connID, Pstring(funcname), &symAddr, &class);
|
|
if ( err ) {
|
|
sprintf(buf, "%s: %.200s",
|
|
funcname, PyMac_StrError(err));
|
|
PyErr_SetString(PyExc_ImportError, buf);
|
|
return NULL;
|
|
}
|
|
p = (dl_funcptr)symAddr;
|
|
|
|
return p;
|
|
}
|