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Glue for the python shared library: an init routine that remembers

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where we're loaded from and PyMac_AddLibResources() which adds that
file to the resource file list.
This commit is contained in:
Jack Jansen 1995-02-13 11:39:17 +00:00
parent c6647c6079
commit 2e4679db8e
1 changed files with 65 additions and 0 deletions
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65
Mac/Python/macshlglue.c Normal file
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/*
** mac shared lib glue.
**
** Partially stolen from MW Startup.c, which is
** Copyright © 1993 metrowerks inc. All Rights Reserved.
*/
#include <CPlusLibPPC.h>
#include <Quickdraw.h>
#include <SegLoad.h>
#include <setjmp.h>
#include <FragLoad.h>
#include <Files.h>
#include <Resources.h>
#include <stdio.h>
char *macstrerror();
DestructorChain *__local_destructor_chain; /* chain of local objects that need destruction */
/* public data */
QDGlobals qd; /* define the Quickdraw globals here! */
jmp_buf __program_exit; /* exit() does a longjmp() to here */
void (*__atexit_hook)(void); /* atexit() sets this up if it is ever called */
void (*___atexit_hook)(void); /* _atexit() sets this up if it is ever called */
int __aborting; /* abort() sets this and longjmps to __program_exit */
int library_fss_valid;
FSSpec library_fss;
/*
** Routine called upon fragment load. We attempt to save the FSSpec from which we're
** loaded. We always return noErr (we just continue without the resources).
*/
OSErr
__sinit(InitBlockPtr data)
{
if ( data == NULL ) return noErr;
if ( data->fragLocator.where == kOnDiskFlat ) {
library_fss = *data->fragLocator.u.onDisk.fileSpec;
library_fss_valid = 1;
} else if ( data->fragLocator.where == kOnDiskSegmented ) {
library_fss = *data->fragLocator.u.inSegs.fileSpec;
library_fss_valid = 1;
}
return noErr;
}
/*
** Insert the library resources into the search path. Put them after
** the resources from the application (which we assume is the current
** resource file). Again, we ignore errors.
*/
void
PyMac_AddLibResources()
{
OSErr err;
short fd, curfd;
if ( !library_fss_valid )
return;
fd = FSpOpenResFile(&library_fss, fsRdWrShPerm);
}