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authorWalter Bender <walter@walter-laptop.(none)>2010-02-01 20:11:17 (GMT)
committer Walter Bender <walter@walter-laptop.(none)>2010-02-01 20:11:17 (GMT)
commitb1da81cd14f54d0f6596c58175de27e1aaeb21ca (patch)
treedc0b5ca7035afe3033472c0c844bfff64c7ae6c6 /tautils.py
parent24458456ef09bf7b90436947cd2dbba2b9f6437e (diff)
general code cleanup
Diffstat (limited to 'tautils.py')
-rw-r--r--tautils.py108
1 files changed, 108 insertions, 0 deletions
diff --git a/tautils.py b/tautils.py
new file mode 100644
index 0000000..83305a8
--- /dev/null
+++ b/tautils.py
@@ -0,0 +1,108 @@
+#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
+