if self.dirty is not None:
return self.dirty
# Loaded but not modified
if self.timestamp is not None:
return self.timestamp
# Not yet loaded, check the FS
return self.database.get_handler_mtime(self.key)
def to_str(self):
return self.data
def set_data(self, data):
self.set_changed()
self.data = data
def to_text(self):
raise NotImplementedError
def is_empty(self):
raise NotImplementedError
register_handler_class(File)
self.encoding = 'utf-8'
def _load_state_from_file(self, file):
data = file.read()
self.encoding = guess_encoding(data)
self.data = unicode(data, self.encoding)
#########################################################################
# API
#########################################################################
def get_encoding(self):
return self.encoding
def to_str(self, encoding='utf-8'):
return self.data.encode(encoding)
def to_text(self):
return unicode(self.to_str(), 'utf-8')
def is_empty(self):
return self.to_text().strip() == u""
register_handler_class(TextFile)
class TGZFile(TARFile):
class_mimetypes = ['application/x-tgz']
class_extension = 'tgz'
class_mode = 'r:gz'
class TBZ2File(TARFile):
class_mimetypes = ['application/x-tbz2']
class_extension = 'tbz2'
class_mode = 'r:bz2'
class GzipFile(File):
class_mimetypes = ['application/x-gzip']
class_extension = 'gz'
class Bzip2File(File):
class_mimetypes = ['application/x-bzip2']
class_extension = 'bz2'
# Register
for cls in [ZIPFile, TARFile, TGZFile, TBZ2File, GzipFile, Bzip2File]:
register_handler_class(cls)
def _get_format(self, handle):
return 'PNG'
def _scale_down(self, handle, ratio):
xsize, ysize = self.size
if ratio >= 1.0:
# Convert
surface = ImageSurface(FORMAT_ARGB32, xsize, ysize)
ctx = Context(surface)
else:
# Scale
xsize, ysize = int(xsize * ratio), int(ysize * ratio)
surface = ImageSurface(FORMAT_ARGB32, xsize, ysize)
ctx = Context(surface)
ctx.scale(ratio, ratio)
# Render
handle.render_cairo(ctx)
# Transform to a PIL image for further manipulation
size = (xsize, ysize)
im = frombuffer('RGBA', size, surface.get_data(), 'raw', 'BGRA', 0, 1)
surface.finish()
return im, xsize, ysize
register_handler_class(Image)
register_handler_class(SVGFile)
for name in self.get_handler_names():
handler = self.get_handler(name)
if type(handler) is Folder:
for x in handler.traverse():
yield x
else:
yield handler
def traverse2(self, context=None):
if context is None:
context = Context()
yield self, context
if context.skip is True:
context.skip = False
else:
for name in self.get_handler_names():
handler = self.get_handler(name)
if type(handler) is Folder:
for x, context in handler.traverse2(context):
yield x, context
else:
yield handler, context
if context.skip is True:
context.skip = False
# Register
register_handler_class(Folder)
if self.dirty is not None:
return self.dirty
# Loaded but not modified
if self.timestamp is not None:
return self.timestamp
# Not yet loaded, check the FS
return self.database.fs.get_mtime(self.key)
def to_str(self):
return self.data
def set_data(self, data):
self.set_changed()
self.data = data
def to_text(self):
raise NotImplementedError
def is_empty(self):
raise NotImplementedError
register_handler_class(File)
class_mode = 'r:gz'
class TBZ2File(TARFile):
class_mimetypes = ['application/x-tbz2']
class_extension = 'tbz2'
class_mode = 'r:bz2'
class GzipFile(File):
class_mimetypes = ['application/x-gzip']
class_extension = 'gz'
class Bzip2File(File):
class_mimetypes = ['application/x-bzip2']
class_extension = 'bz2'
# Register
for cls in [ZIPFile, TARFile, TGZFile, TBZ2File, GzipFile, Bzip2File]:
register_handler_class(cls)
return 'PNG'
def _scale_down(self, handle, ratio):
xsize, ysize = self.size
if ratio >= 1.0:
# Convert
surface = ImageSurface(FORMAT_ARGB32, xsize, ysize)
ctx = Context(surface)
else:
# Scale
xsize, ysize = int(xsize * ratio), int(ysize * ratio)
surface = ImageSurface(FORMAT_ARGB32, xsize, ysize)
ctx = Context(surface)
ctx.scale(ratio, ratio)
# Render
handle.render_cairo(ctx)
# Transform to a PIL image for further manipulation
size = (xsize, ysize)
im = frombuffer('RGBA', size, surface.get_data(), 'raw', 'BGRA', 0, 1)
surface.finish()
return im, xsize, ysize
register_handler_class(Image)
register_handler_class(SVGFile)
f = StringIO(data)
try:
im = PILImage.open(f).convert("RGBA")
except IOError:
return None, None
# Create the thumbnail if needed
state_width, state_height = self.size
if state_width > width or state_height > height:
# TODO Improve the quality of the thumbnails by cropping?
# The only problem would be the loss of information.
try:
im.thumbnail((width, height), PILImage.ANTIALIAS)
except IOError:
# PIL does not support interlaced PNG files, raises IOError
return None, None
else:
thumbnail = StringIO()
im.save(thumbnail, format.upper(), quality=80)
data = thumbnail.getvalue()
thumbnail.close()
else:
data = self.to_str()
# Store in the cache and return
thumbnails[key] = data, format.lower()
return data, format.lower()
register_handler_class(Image)
f = StringIO(data)
try:
im = PILImage.open(f).convert("RGBA")
except IOError:
return None, None
# Create the thumbnail if needed
state_width, state_height = self.size
if state_width > width or state_height > height:
# TODO Improve the quality of the thumbnails by cropping?
# The only problem would be the loss of information.
try:
im.thumbnail((width, height), PILImage.ANTIALIAS)
except IOError:
# PIL does not support interlaced PNG files, raises IOError
return None, None
else:
thumbnail = StringIO()
im.save(thumbnail, format.upper(), quality=80)
data = thumbnail.getvalue()
thumbnail.close()
else:
data = self.to_str()
# Store in the cache and return
thumbnails[key] = data, format.lower()
return data, format.lower()
register_handler_class(Image)
