mirror of https://github.com/python/cpython.git
447 lines
12 KiB
C
447 lines
12 KiB
C
/***********************************************************
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Copyright 1991-1997 by Stichting Mathematisch Centrum, Amsterdam,
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The Netherlands.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the names of Stichting Mathematisch
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Centrum or CWI or Corporation for National Research Initiatives or
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CNRI not be used in advertising or publicity pertaining to
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distribution of the software without specific, written prior
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permission.
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While CWI is the initial source for this software, a modified version
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is made available by the Corporation for National Research Initiatives
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(CNRI) at the Internet address ftp://ftp.python.org.
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STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
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REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
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CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
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DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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PERFORMANCE OF THIS SOFTWARE.
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******************************************************************/
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#include "Python.h"
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#include "osdefs.h"
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#include "macglue.h"
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#include "macdefs.h"
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#include "pythonresources.h"
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef TARGET_API_MAC_OSX
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#define PATHNAMELEN 1024
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#else
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#define PATHNAMELEN 256
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#endif
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/* Return the initial python search path. This is called once from
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** initsys() to initialize sys.path.
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**
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** If USE_BUILTIN_PATH is defined the path defined here is used
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** (after prepending the python home dir to each item).
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** If it is not defined the path is gotten from a resource in the
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** Preferences file.
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**
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** XXXX This code needs cleaning up. The routines here have moved
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** around quite a bit, and they're pretty messy for that reason.
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*/
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#include <Files.h>
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#include <Aliases.h>
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#include <Folders.h>
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#include <Resources.h>
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#include <TextUtils.h>
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#include <Dialogs.h>
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#ifndef USE_BUILTIN_PATH
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staticforward char *PyMac_GetPythonPath();
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#endif
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#define PYTHONPATH "\
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:\n\
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:Lib\n\
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:Lib:stdwin\n\
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:Lib:test\n\
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:Lib:mac"
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static int
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getpreffilefss(FSSpec *fssp)
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{
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static int diditbefore=0;
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static int rv = 1;
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static FSSpec fss;
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short prefdirRefNum;
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long prefdirDirID;
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long pyprefdirDirID;
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Handle namehandle;
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OSErr err;
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if ( !diditbefore ) {
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if ( (namehandle=GetNamedResource('STR ', PREFFILENAME_NAME)) == NULL ) {
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(void)StopAlert(NOPREFNAME_ID, NULL);
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exit(1);
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}
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if ( **namehandle == '\0' ) {
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/* Empty string means don't use preferences file */
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rv = 0;
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} else {
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/* There is a filename, construct the fsspec */
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if ( FindFolder(kOnSystemDisk, 'pref', kDontCreateFolder, &prefdirRefNum,
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&prefdirDirID) != noErr ) {
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/* Something wrong with preferences folder */
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(void)StopAlert(NOPREFDIR_ID, NULL);
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exit(1);
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}
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/* make fsspec for the "Python" folder inside the prefs folder */
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err = FSMakeFSSpec(prefdirRefNum, prefdirDirID, "\pPython", &fss);
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if (err == fnfErr) {
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/* it doesn't exist: create it */
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err = FSpDirCreate(&fss, smSystemScript, &pyprefdirDirID);
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} else {
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/* it does exist, now find out the dirID of the Python prefs folder, brrr. */
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CInfoPBRec info;
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info.dirInfo.ioVRefNum = fss.vRefNum;
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info.dirInfo.ioDrDirID = fss.parID;
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info.dirInfo.ioNamePtr = fss.name;
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info.dirInfo.ioFDirIndex = 0;
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info.dirInfo.ioACUser = 0;
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err = PBGetCatInfo(&info, 0);
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if (err == noErr) {
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pyprefdirDirID = info.dirInfo.ioDrDirID;
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}
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}
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if (err != noErr) {
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(void)StopAlert(NOPREFDIR_ID, NULL);
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exit(1);
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}
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HLock(namehandle);
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err = FSMakeFSSpec(fss.vRefNum, pyprefdirDirID, (unsigned char *)*namehandle, &fss);
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HUnlock(namehandle);
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if (err != noErr && err != fnfErr) {
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(void)StopAlert(NOPREFDIR_ID, NULL);
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exit(1);
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}
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}
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ReleaseResource(namehandle);
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diditbefore = 1;
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}
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*fssp = fss;
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return rv;
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}
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char *
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Py_GetPath()
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{
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/* Modified by Jack to do something a bit more sensible:
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** - Prepend the python home-directory (which is obtained from a Preferences
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** resource)
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** - Add :
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*/
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static char *pythonpath;
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char *p, *endp;
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int newlen;
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char *curwd;
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if ( pythonpath ) return pythonpath;
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#ifndef USE_BUILTIN_PATH
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if ( pythonpath = PyMac_GetPythonPath() )
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return pythonpath;
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printf("Warning: No pythonpath resource found, using builtin default\n");
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#endif
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curwd = PyMac_GetPythonDir();
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p = PYTHONPATH;
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endp = p;
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pythonpath = malloc(2);
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if ( pythonpath == NULL ) return PYTHONPATH;
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strcpy(pythonpath, ":");
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while (*endp) {
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endp = strchr(p, '\n');
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if ( endp == NULL )
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endp = p + strlen(p);
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newlen = strlen(pythonpath) + 1 + strlen(curwd) + (endp-p);
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pythonpath = realloc(pythonpath, newlen+1);
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if ( pythonpath == NULL ) return PYTHONPATH;
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strcat(pythonpath, "\n");
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if ( *p == ':' ) {
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p++;
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strcat(pythonpath, curwd);
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strncat(pythonpath, p, (endp-p));
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newlen--; /* Ok, ok, we've allocated one byte too much */
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} else {
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/* We've allocated too much in this case */
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newlen -= strlen(curwd);
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pythonpath = realloc(pythonpath, newlen+1);
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if ( pythonpath == NULL ) return PYTHONPATH;
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strncat(pythonpath, p, (endp-p));
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}
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pythonpath[newlen] = '\0';
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p = endp + 1;
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}
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return pythonpath;
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}
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/*
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** Open/create the Python Preferences file, return the handle
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*/
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short
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PyMac_OpenPrefFile()
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{
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AliasHandle handle;
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FSSpec dirspec;
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short prefrh;
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OSErr err;
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if ( !getpreffilefss(&dirspec))
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return -1;
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prefrh = FSpOpenResFile(&dirspec, fsRdWrShPerm);
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if ( prefrh < 0 ) {
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FSpCreateResFile(&dirspec, 'Pyth', 'pref', 0);
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prefrh = FSpOpenResFile(&dirspec, fsRdWrShPerm);
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if ( prefrh == -1 ) {
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/* This "cannot happen":-) */
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printf("Cannot create preferences file, error %d\n", ResError());
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exit(1);
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}
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if ( (err=PyMac_init_process_location()) != 0 ) {
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printf("Cannot get application location, error %d\n", err);
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exit(1);
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}
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dirspec = PyMac_ApplicationFSSpec;
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dirspec.name[0] = 0;
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if ((err=NewAlias(NULL, &dirspec, &handle)) != 0 ) {
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printf("Cannot make alias to application directory, error %d\n", err);
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exit(1);
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}
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AddResource((Handle)handle, 'alis', PYTHONHOME_ID, "\p");
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UpdateResFile(prefrh);
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} else {
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UseResFile(prefrh);
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}
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return prefrh;
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}
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/*
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** Return the name of the Python directory
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*/
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char *
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PyMac_GetPythonDir()
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{
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static int diditbefore = 0;
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static char name[PATHNAMELEN] = {':', '\0'};
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AliasHandle handle;
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FSSpec dirspec;
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Boolean modified = 0;
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short oldrh, prefrh = -1, homerh;
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if ( diditbefore )
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return name;
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oldrh = CurResFile();
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/* First look for an override in the application file */
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UseResFile(PyMac_AppRefNum);
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handle = (AliasHandle)Get1Resource('alis', PYTHONHOMEOVERRIDE_ID);
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UseResFile(oldrh);
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if ( handle != NULL ) {
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homerh = PyMac_AppRefNum;
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} else {
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/* Try to open preferences file in the preferences folder. */
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prefrh = PyMac_OpenPrefFile();
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handle = (AliasHandle)Get1Resource('alis', PYTHONHOME_ID);
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if ( handle == NULL ) {
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/* (void)StopAlert(BADPREFFILE_ID, NULL); */
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diditbefore=1;
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return ":";
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}
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homerh = prefrh;
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}
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/* It exists. Resolve it (possibly updating it) */
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if ( ResolveAlias(NULL, handle, &dirspec, &modified) != noErr ) {
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(void)StopAlert(BADPREFFILE_ID, NULL);
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diditbefore=1;
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return ":";
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}
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if ( modified ) {
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ChangedResource((Handle)handle);
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UpdateResFile(homerh);
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}
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if ( prefrh != -1 ) CloseResFile(prefrh);
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UseResFile(oldrh);
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if ( PyMac_GetFullPathname(&dirspec, name, PATHNAMELEN) == 0 ) {
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strcat(name, ":");
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} else {
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/* If all fails, we return the current directory */
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printf("Python home dir exists but I cannot find the pathname!!\n");
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name[0] = 0;
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(void)getcwd(name, sizeof(name));
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}
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diditbefore = 1;
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return name;
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}
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#ifndef USE_BUILTIN_PATH
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char *
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PyMac_GetPythonPath(void)
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{
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short oldrh, prefrh = -1;
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char *rv;
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int i, newlen;
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Str255 pathitem;
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int resource_id;
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OSErr err;
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Handle h;
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oldrh = CurResFile();
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/*
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** This is a bit tricky. We check here whether the application file
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** contains an override. This is to forestall us finding another STR# resource
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** with "our" id and using that for path initialization
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*/
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UseResFile(PyMac_AppRefNum);
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SetResLoad(0);
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if ( (h=Get1Resource('STR#', PYTHONPATHOVERRIDE_ID)) ) {
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ReleaseResource(h);
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resource_id = PYTHONPATHOVERRIDE_ID;
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} else {
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resource_id = PYTHONPATH_ID;
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}
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SetResLoad(1);
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UseResFile(oldrh);
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/* Open the preferences file only if there is no override */
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if ( resource_id != PYTHONPATHOVERRIDE_ID )
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prefrh = PyMac_OpenPrefFile();
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/* At this point, we may or may not have the preferences file open, and it
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** may or may not contain a sys.path STR# resource. We don't care, if it doesn't
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** exist we use the one from the application (the default).
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** We put an initial '\n' in front of the path that we don't return to the caller
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*/
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if( (rv = malloc(2)) == NULL )
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goto out;
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strcpy(rv, "\n");
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for(i=1; ; i++) {
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GetIndString(pathitem, resource_id, i);
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if( pathitem[0] == 0 )
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break;
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if ( pathitem[0] >= 9 && strncmp((char *)pathitem+1, "$(PYTHON)", 9) == 0 ) {
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/* We have to put the directory in place */
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char *dir = PyMac_GetPythonDir();
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newlen = strlen(rv) + strlen(dir) + (pathitem[0]-9) + 2;
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if( (rv=realloc(rv, newlen)) == NULL)
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goto out;
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strcat(rv, dir);
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/* Skip a colon at the beginning of the item */
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if ( pathitem[0] > 9 && pathitem[1+9] == ':' ) {
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memcpy(rv+strlen(rv), pathitem+1+10, pathitem[0]-10);
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newlen--;
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} else {
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memcpy(rv+strlen(rv), pathitem+1+9, pathitem[0]-9);
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}
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rv[newlen-2] = '\n';
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rv[newlen-1] = 0;
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} else if ( pathitem[0] >= 14 && strncmp((char *)pathitem+1, "$(APPLICATION)", 14) == 0 ) {
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/* This is the application itself */
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if ( (err=PyMac_init_process_location()) != 0 ) {
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printf("Cannot get application location, error %d\n", err);
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exit(1);
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}
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newlen = strlen(rv) + strlen(PyMac_ApplicationPath) + 2;
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if( (rv=realloc(rv, newlen)) == NULL)
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goto out;
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strcpy(rv+strlen(rv), PyMac_ApplicationPath);
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rv[newlen-2] = '\n';
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rv[newlen-1] = 0;
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} else {
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/* Use as-is */
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newlen = strlen(rv) + (pathitem[0]) + 2;
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if( (rv=realloc(rv, newlen)) == NULL)
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goto out;
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memcpy(rv+strlen(rv), pathitem+1, pathitem[0]);
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rv[newlen-2] = '\n';
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rv[newlen-1] = 0;
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}
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}
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if( strlen(rv) == 1) {
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free(rv);
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rv = NULL;
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}
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if ( rv ) {
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rv[strlen(rv)-1] = 0;
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rv++;
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}
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out:
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if ( prefrh != -1) CloseResFile(prefrh);
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UseResFile(oldrh);
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return rv;
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}
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#endif /* !USE_BUILTIN_PATH */
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void
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PyMac_PreferenceOptions(PyMac_PrefRecord *pr)
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{
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short oldrh, prefrh = -1;
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Handle handle;
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int size;
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PyMac_PrefRecord *p;
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int action;
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oldrh = CurResFile();
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/* Attempt to load overrides from application */
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UseResFile(PyMac_AppRefNum);
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handle = Get1Resource('Popt', PYTHONOPTIONSOVERRIDE_ID);
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UseResFile(oldrh);
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/* Otherwise get options from prefs file or any other open resource file */
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if ( handle == NULL ) {
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prefrh = PyMac_OpenPrefFile();
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handle = GetResource('Popt', PYTHONOPTIONS_ID);
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}
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if ( handle == NULL ) {
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return;
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}
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HLock(handle);
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size = GetHandleSize(handle);
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p = (PyMac_PrefRecord *)*handle;
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if ( p->version == POPT_VERSION_CURRENT && size == sizeof(PyMac_PrefRecord) ) {
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*pr = *p;
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} else {
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action = CautionAlert(BADPREFERENCES_ID, NULL);
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if ( action == BADPREF_DELETE ) {
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OSErr err;
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RemoveResource(handle);
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if ( (err=ResError()) ) printf("RemoveResource: %d\n", err);
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if ( prefrh != -1 ) {
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UpdateResFile(prefrh);
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if ( (err=ResError()) ) printf("UpdateResFile: %d\n", err);
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}
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} else if ( action == BADPREF_QUIT )
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exit(1);
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}
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HUnlock(handle);
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if ( prefrh != -1) CloseResFile(prefrh);
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UseResFile(oldrh);
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}
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