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"""Edit the Python Preferences file."""
import addpack
addpack.addpack('Tools')
addpack.addpack('bgen')
addpack.addpack('evt')
from Dlg import *
from Events import *
from Res import *
import string
import struct
import macfs
import MacOS
import os
import sys
import Res # For Res.Error
# resource IDs in our own resources (dialogs, etc)
MESSAGE_ID = 256
DIALOG_ID = 512
TEXT_ITEM = 1
OK_ITEM = 2
CANCEL_ITEM = 3
REVERT_ITEM = 4
DIR_ITEM = 5
# Resource IDs in the preferences file
PATH_STRINGS_ID = 128
DIRECTORY_ID = 128
WRITE = 2
smAllScripts = -3
kOnSystemDisk = 0x8000
def restolist(data):
"""Convert STR# resource data to a list of strings"""
if not data:
return []
num, = struct.unpack('h', data[:2])
data = data[2:]
rv = []
for i in range(num):
strlen = ord(data[0])
if strlen < 0: strlen = strlen + 256
str = data[1:strlen+1]
data = data[strlen+1:]
rv.append(str)
return rv
def listtores(list):
"""Convert a list of strings to STR# resource data"""
rv = struct.pack('h', len(list))
for str in list:
rv = rv + chr(len(str)) + str
return rv
def message(str = "Hello, world!", id = MESSAGE_ID):
"""Show a simple alert with a text message"""
d = GetNewDialog(id, -1)
print 'd=', d
tp, h, rect = d.GetDialogItem(2)
SetDialogItemText(h, str)
while 1:
n = ModalDialog(None)
if n == 1: break
def interact(list, pythondir):
"""Let the user interact with the dialog"""
opythondir = pythondir
try:
# Try to go to the "correct" dir for GetDirectory
os.chdir(pythondir.as_pathname())
except os.error:
pass
d = GetNewDialog(DIALOG_ID, -1)
tp, h, rect = d.GetDialogItem(1)
SetDialogItemText(h, string.joinfields(list, '\r'))
while 1:
n = ModalDialog(None)
if n == OK_ITEM:
break
if n == CANCEL_ITEM:
return None
if n == REVERT_ITEM:
return [], pythondir
if n == DIR_ITEM:
fss, ok = macfs.GetDirectory('Select python home folder:')
if ok:
pythondir = fss
tmp = string.splitfields(GetDialogItemText(h), '\r')
rv = []
for i in tmp:
if i:
rv.append(i)
return rv, pythondir
def main():
try:
h = OpenResFile('EditPythonPrefs.rsrc')
except Res.Error:
pass # Assume we already have acces to our own resource
# Find the preferences folder and our prefs file, create if needed.
vrefnum, dirid = macfs.FindFolder(kOnSystemDisk, 'pref', 0)
preff_fss = macfs.FSSpec((vrefnum, dirid, 'Python Preferences'))
try:
preff_handle = FSpOpenResFile(preff_fss, WRITE)
except Res.Error:
# Create it
message('No preferences file, creating one...')
FSpCreateResFile(preff_fss, 'PYTH', 'pref', smAllScripts)
preff_handle = FSpOpenResFile(preff_fss, WRITE)
# Load the path and directory resources
try:
sr = GetResource('STR#', PATH_STRINGS_ID)
except (MacOS.Error, Res.Error):
message('Cannot find any sys.path resource! (Old python?)')
sys.exit(0)
d = sr.data
l = restolist(d)
try:
dr = GetResource('alis', DIRECTORY_ID)
fss, fss_changed = macfs.RawAlias(dr.data).Resolve()
except (MacOS.Error, Res.Error):
dr = None
fss = macfs.FSSpec(os.getcwd())
fss_changed = 1
# Let the user play away
result = interact(l, fss)
# See what we have to update, and how
if result == None:
sys.exit(0)
pathlist, nfss = result
if nfss != fss:
fss_changed = 1
if fss_changed or pathlist != l:
if fss_changed:
alias = nfss.NewAlias()
if dr:
dr.data = alias.data
dr.ChangedResource()
else:
dr = Resource(alias.data)
dr.AddResource('alis', DIRECTORY_ID, '')
if pathlist != l:
if pathlist == []:
if sr.HomeResFile() == preff_handle:
sr.RemoveResource()
elif sr.HomeResFile() == preff_handle:
sr.data = listtores(pathlist)
sr.ChangedResource()
else:
sr = Resource(listtores(pathlist))
sr.AddResource('STR#', PATH_STRINGS_ID, '')
CloseResFile(preff_handle)
if __name__ == '__main__':
print # Stupid, to init toolboxes...
main()
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