def _hook_wave(self, book, appendix, container, code, argv):
if code == EB_HOOK_BEGIN_WAVE:
self._write_text('<a>')
elif code == EB_HOOK_END_WAVE:
start_offset = (argv[2] - 1) * EB_SIZE_PAGE + argv[3]
end_offset = (argv[4] - 1) * EB_SIZE_PAGE + argv[5]
data_size = int(end_offset - start_offset)
subbook_id = str(eb_subbook(self.book))
page = int(argv[2])
offset = int(argv[3])
audio_id = _position_to_resource_id([page, offset, data_size])
uri = self.uri_dispatcher.uri('audio', subbook=subbook_id, audio=audio_id)
self._write_text(u'</a><hack_attribs href=\"{0}\" />'.format(uri))
def _hook_color(self, book, appendix, container, code, argv):
'''Unfortunately, displaying arbitrary images inline in base64 is too much to handle.
Resort to a file cache directory.
'''
extensions = {
EB_HOOK_BEGIN_COLOR_BMP: 'png',
EB_HOOK_BEGIN_IN_COLOR_BMP: 'png',
EB_HOOK_BEGIN_COLOR_JPEG: 'jpg',
EB_HOOK_BEGIN_IN_COLOR_JPEG: 'jpg',
}
_, _, page, offset = argv
eb_set_binary_color_graphic(self.book, (page, offset))
extension = extensions[code]
binary_parts = []
while True:
chunk = eb_read_binary(self.book, 0)
if len(chunk) == 0:
break
binary_parts.append(chunk)
binary = ''.join(binary_parts)
subbook_id = str(eb_subbook(self.book))
resource_id = _position_to_resource_id((page, offset))
img_path = self.uri_dispatcher.uri('image', subbook=subbook_id, image=resource_id, ext=extension) # for now
if not path.exists(img_path):
if extension == 'png':
src, dst = StringIO(binary), StringIO()
img = Image.open(src)
img.save(img_path)
elif extension == 'jpg':
with open(img_path, 'wb') as file:
file.write(binary)
self._write_text(u'<div><img src="/{path}" /></div>'.format(path=img_path))
return EB_SUCCESS
def id(self):
if self._heading_location:
return _position_to_resource_id(
list(self._heading_location) + list(self._text_location))
else:
return _position_to_resource_id(list(self._text_location))
def end_reference():
subbook_id = str(eb_subbook(self.book))
entry_id = _position_to_resource_id([argv[1], argv[2]])
uri = self.uri_dispatcher.uri('entry', subbook=subbook_id, entry=entry_id)
return u'</a><hack_attribs href=\"{0}\" rel=\"subsection\"/>'.format(uri)
def _write_text_anchor(self, book, position):
subbook_id = str(eb_subbook(self.book))
entry_id = _position_to_resource_id(position)
uri = self.uri_dispatcher.uri('entry', subbook=subbook_id, entry=entry_id)
self._write_text(u'<a name=\"{0}\">'.format(uri))
def id(self):
if self._heading_location:
return _position_to_resource_id(list(self._heading_location) + list(self._text_location))
else:
return _position_to_resource_id(list(self._text_location))
