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"""Edit the Python Preferences file."""
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
DIR_ITEM = 4
TITLE_ITEM = 5
# Resource IDs in the preferences file
PATH_STRINGS_ID = 128
DIRECTORY_ID = 128
OPTIONS_ID = 128
# Override IDs (in the applet)
OVERRIDE_PATH_STRINGS_ID = 129
OVERRIDE_DIRECTORY_ID = 129
OVERRIDE_OPTIONS_ID = 129
READ = 1
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, title):
"""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(TITLE_ITEM)
SetDialogItemText(h, title)
tp, h, rect = d.GetDialogItem(TEXT_ITEM)
SetDialogItemText(h, string.joinfields(list, '\r'))
## d.SetDialogDefaultItem(OK_ITEM)
d.SetDialogCancelItem(CANCEL_ITEM)
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 getprefpath(id):
# Load the path and directory resources
try:
sr = GetResource('STR#', id)
except (MacOS.Error, Res.Error):
return None, None
d = sr.data
l = restolist(d)
return l, sr
def getprefdir(id):
try:
dr = GetResource('alis', id)
fss, fss_changed = macfs.RawAlias(dr.data).Resolve()
except (MacOS.Error, Res.Error):
return None, None, 1
return fss, dr, fss_changed
def openpreffile(rw):
# 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, rw)
except Res.Error:
# Create it
message('No preferences file, creating one...')
FSpCreateResFile(preff_fss, 'Pyth', 'pref', smAllScripts)
preff_handle = FSpOpenResFile(preff_fss, rw)
return preff_handle
def openapplet(name):
fss = macfs.FSSpec(name)
try:
app_handle = FSpOpenResFile(fss, WRITE)
except Res.Error:
message('File does not have a resource fork.')
sys.exit(0)
return app_handle
def edit_preferences():
preff_handle = openpreffile(WRITE)
l, sr = getprefpath(PATH_STRINGS_ID)
if l == None:
message('Cannot find any sys.path resource! (Old python?)')
sys.exit(0)
fss, dr, fss_changed = getprefdir(DIRECTORY_ID)
if fss == None:
fss = macfs.FSSpec(os.getcwd())
fss_changed = 1
# Let the user play away
result = interact(l, fss, 'System-wide preferences')
# 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)
def edit_applet(name):
pref_handle = openpreffile(READ)
app_handle = openapplet(name)
notfound = ''
l, sr = getprefpath(OVERRIDE_PATH_STRINGS_ID)
if l == None:
notfound = 'path'
l, dummy = getprefpath(PATH_STRINGS_ID)
if l == None:
message('Cannot find any sys.path resource! (Old python?)')
sys.exit(0)
fss, dr, fss_changed = getprefdir(OVERRIDE_DIRECTORY_ID)
if fss == None:
if notfound:
notfound = notfound + ' and ' + 'directory'
else:
notfound = 'directory'
fss, dummy, dummy2 = getprefdir(DIRECTORY_ID)
if fss == None:
fss = macfs.FSSpec(os.getcwd())
fss_changed = 1
dummy = dummy2 = None # Discard them.
if notfound:
message('Warning: initial %s taken from system-wide defaults'%notfound)
# Let the user play away
result = interact(l, fss, name)
# 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', OVERRIDE_DIRECTORY_ID, '')
if pathlist != l:
if pathlist == []:
if sr.HomeResFile() == app_handle:
sr.RemoveResource()
elif sr and sr.HomeResFile() == app_handle:
sr.data = listtores(pathlist)
sr.ChangedResource()
else:
sr = Resource(listtores(pathlist))
sr.AddResource('STR#', OVERRIDE_PATH_STRINGS_ID, '')
CloseResFile(app_handle)
def main():
try:
h = OpenResFile('EditPythonPrefs.rsrc')
except Res.Error:
pass # Assume we already have acces to our own resource
if len(sys.argv) <= 1:
edit_preferences()
else:
for appl in sys.argv[1:]:
edit_applet(appl)
if __name__ == '__main__':
print # Stupid, to init toolboxes...
main()
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