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#Copyright (c) 2007-8, Playful Invention Company.
#Copyright (c) 2008-10, Walter Bender
#Permission is hereby granted, free of charge, to any person obtaining a copy
#of this software and associated documentation files (the "Software"), to deal
#in the Software without restriction, including without limitation the rights
#to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#copies of the Software, and to permit persons to whom the Software is
#furnished to do so, subject to the following conditions:
#The above copyright notice and this permission notice shall be included in
#all copies or substantial portions of the Software.
#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
#THE SOFTWARE.
import gtk
import pickle
try:
_old_Sugar_system = False
import json
json.dumps
from json import load as jload
from json import dump as jdump
except (ImportError, AttributeError):
try:
import simplejson as json
from simplejson import load as jload
from simplejson import dump as jdump
except:
_old_Sugar_system = True
from StringIO import StringIO
import os.path
def json_load(text):
if _old_Sugar_system is True:
listdata = json.read(text)
else:
io = StringIO(text)
listdata = jload(io)
# json converts tuples to lists, so we need to convert back,
return _tuplify(listdata)
def _tuplify(t):
if type(t) is not list:
return t
return tuple(map(_tuplify, t))
def get_id(c):
if c is None:
return None
return c.id
def json_dump(data):
if _old_Sugar_system is True:
return json.write(data)
else:
io = StringIO()
jdump(data,io)
return io.getvalue()
def get_load_name(suffix, load_save_folder):
print "get_load_name: %s %s" % (suffix, load_save_folder)
dialog = gtk.FileChooserDialog("Load...", None,
gtk.FILE_CHOOSER_ACTION_OPEN,
(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL,
gtk.STOCK_OPEN, gtk.RESPONSE_OK))
dialog.set_default_response(gtk.RESPONSE_OK)
return do_dialog(dialog, suffix, load_save_folder)
#
# We try to maintain read-compatibility with all versions of Turtle Art.
# Try pickle first; then selfo different versions of json.
#
def data_from_file(ta_file):
# Just open the .ta file, ignoring any .png file that might be present.
f = open(ta_file, "r")
try:
data = pickle.load(f)
except:
# Rewind necessary because of failed pickle.load attempt
f.seek(0)
text = f.read()
data = json_load(text)
f.close()
return data
def do_dialog(dialog, suffix, load_save_folder):
print "do_dialog: %s %s" % (suffix, load_save_folder)
result = None
filter = gtk.FileFilter()
filter.add_pattern('*'+suffix)
filter.set_name("Turtle Art")
dialog.add_filter(filter)
dialog.set_current_folder(load_save_folder)
response = dialog.run()
if response == gtk.RESPONSE_OK:
result = dialog.get_filename()
load_save_folder = dialog.get_current_folder()
dialog.destroy()
return result, load_save_folder
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