The old platform-specific contents of importdl.c, broken down into one

file per platform (really: per style of Dl API; e.g. all platforms using dlopen() are grouped together in dynload_shlib.c.). This is part of a set of patches by Greg Stein.
2025-08-31 05:58:33 +00:00 · 1999-12-20 21:18:49 +00:00 · 1999-12-20 21:18:49 +00:00 · 22a1d3671b
commit 22a1d3671b
parent 72badf5404
10 changed files with 1347 additions and 0 deletions
--- a/Python/dynload_mac.c
+++ b/Python/dynload_mac.c
@ -0,0 +1,134 @@
+/***********************************************************
+Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
+The Netherlands.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the names of Stichting Mathematisch
+Centrum or CWI or Corporation for National Research Initiatives or
+CNRI not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+While CWI is the initial source for this software, a modified version
+is made available by the Corporation for National Research Initiatives
+(CNRI) at the Internet address ftp://ftp.python.org.
+
+STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
+CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
+DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+PERFORMANCE OF THIS SOFTWARE.
+
+******************************************************************/
+
+/* Support for dynamic loading of extension modules */
+
+#include "Python.h"
+#include "importdl.h"
+
+#include <Aliases.h>
+#include <CodeFragments.h>
+#ifdef SYMANTEC__CFM68K__ /* Really an older version of Universal Headers */
+#define CFragConnectionID ConnectionID
+#define kLoadCFrag 0x01
+#endif
+#ifdef USE_GUSI
+#include "TFileSpec.h"		/* for Path2FSSpec() */
+#endif
+#include <Files.h>
+#include "macdefs.h"
+#include "macglue.h"
+
+
+const struct filedescr _PyImport_DynLoadFiletab[] = {
+	{".slb", "rb", C_EXTENSION},
+#ifdef __CFM68K__
+	{".CFM68K.slb", "rb", C_EXTENSION},
+#else
+	{".ppc.slb", "rb", C_EXTENSION},
+#endif
+	{0, 0}
+};
+
+
+dl_funcptr _PyImport_GetDynLoadFunc(const char *name, const char *funcname,
+				    const char *pathname, FILE *fp)
+{
+	dl_funcptr p;
+
+	/*
+	** 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_GUSI
+	Boolean isfolder, didsomething;
+#endif
+	char buf[512];
+	Str63 fragname;
+	Ptr symAddr;
+	CFragSymbolClass class;
+		
+	/* First resolve any aliases to find the real file */
+#ifdef USE_GUSI
+	err = Path2FSSpec(pathname, &libspec);
+#else
+	(void)FSMakeFSSpec(0, 0, Pstring(pathname), &libspec);
+	err = ResolveAliasFile(&libspec, 1, &isfolder, &didsomething);
+#endif
+	if ( err ) {
+		sprintf(buf, "%.255s: %.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 ) {
+		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 */
+	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;
+}