/usr/share/games/fretsonfire/game/Resource.py is in fretsonfire-game 1.3.110.dfsg2-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# -*- coding: iso-8859-1 -*- #
# #
# Frets on Fire #
# Copyright (C) 2006 Sami Kyöstilä #
# #
# This program is free software; you can redistribute it and/or #
# modify it under the terms of the GNU General Public License #
# as published by the Free Software Foundation; either version 2 #
# of the License, or (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program; if not, write to the Free Software #
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, #
# MA 02110-1301, USA. #
#####################################################################
import os
from Queue import Queue, Empty
from threading import Thread, BoundedSemaphore
import time
import shutil
import stat
from Task import Task
import Log
import Version
class Loader(Thread):
def __init__(self, target, name, function, resultQueue, loaderSemaphore, onLoad = None):
Thread.__init__(self)
self.semaphore = loaderSemaphore
self.target = target
self.name = name
self.function = function
self.resultQueue = resultQueue
self.result = None
self.onLoad = onLoad
self.exception = None
self.time = 0.0
self.canceled = False
if target and name:
setattr(target, name, None)
def run(self):
self.semaphore.acquire()
# Reduce priority on posix
if os.name == "posix":
os.nice(5)
self.load()
self.semaphore.release()
self.resultQueue.put(self)
def __str__(self):
return "%s(%s) %s" % (self.function.__name__, self.name, self.canceled and "(canceled)" or "")
def cancel(self):
self.canceled = True
def load(self):
try:
start = time.time()
self.result = self.function()
self.time = time.time() - start
except:
import sys
self.exception = sys.exc_info()
def finish(self):
if self.canceled:
return
Log.notice("Loaded %s.%s in %.3f seconds" % (self.target.__class__.__name__, self.name, self.time))
if self.exception:
raise self.exception[0], self.exception[1], self.exception[2]
if self.target and self.name:
setattr(self.target, self.name, self.result)
if self.onLoad:
self.onLoad(self.result)
return self.result
def __call__(self):
self.join()
return self.result
class Resource(Task):
def __init__(self, dataPath = os.path.join("..", "data")):
self.resultQueue = Queue()
self.dataPaths = [dataPath]
self.loaderSemaphore = BoundedSemaphore(value = 1)
self.loaders = []
def addDataPath(self, path):
if not path in self.dataPaths:
self.dataPaths = [path] + self.dataPaths
def removeDataPath(self, path):
if path in self.dataPaths:
self.dataPaths.remove(path)
def fileName(self, *name, **args):
if not args.get("writable", False):
for dataPath in self.dataPaths:
readOnlyPath = os.path.join(dataPath, *name)
# If the requested file is in the read-write path and not in the
# read-only path, use the existing read-write one.
if os.path.isfile(readOnlyPath):
return readOnlyPath
readWritePath = os.path.join(getWritableResourcePath(), *name)
if os.path.isfile(readWritePath):
return readWritePath
return readOnlyPath
else:
readOnlyPath = os.path.join(self.dataPaths[-1], *name)
try:
# First see if we can write to the original file
if os.access(readOnlyPath, os.W_OK):
return readOnlyPath
# If the original file does not exist, see if we can write to its directory
if not os.path.isfile(readOnlyPath) and os.access(os.path.dirname(readOnlyPath), os.W_OK):
return readOnlyPath
except:
raise
# If the resource exists in the read-only path, make a copy to the
# read-write path.
readWritePath = os.path.join(getWritableResourcePath(), *name)
if not os.path.isfile(readWritePath) and os.path.isfile(readOnlyPath):
Log.notice("Copying '%s' to writable data directory." % "/".join(name))
try:
os.makedirs(os.path.dirname(readWritePath))
except:
pass
shutil.copy(readOnlyPath, readWritePath)
self.makeWritable(readWritePath)
# Create directories if needed
if not os.path.isdir(readWritePath) and os.path.isdir(readOnlyPath):
Log.notice("Creating writable directory '%s'." % "/".join(name))
os.makedirs(readWritePath)
self.makeWritable(readWritePath)
return readWritePath
def makeWritable(self, path):
os.chmod(path, stat.S_IWRITE | stat.S_IREAD | stat.S_IEXEC)
def load(self, target = None, name = None, function = lambda: None, synch = False, onLoad = None):
Log.notice("Loading %s.%s %s" % (target.__class__.__name__, name, synch and "synchronously" or "asynchronously"))
l = Loader(target, name, function, self.resultQueue, self.loaderSemaphore, onLoad = onLoad)
if synch:
l.load()
return l.finish()
else:
self.loaders.append(l)
l.start()
return l
def run(self, ticks):
try:
loader = self.resultQueue.get_nowait()
loader.finish()
self.loaders.remove(loader)
except Empty:
pass
def getWritableResourcePath():
"""
Returns a path that holds the configuration for the application.
"""
path = "."
appname = Version.appName()
if os.name == "posix":
path = os.path.expanduser("~/." + appname)
elif os.name == "nt":
try:
path = os.path.join(os.environ["APPDATA"], appname)
except:
pass
try:
os.mkdir(path)
except:
pass
return path
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