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# -*- coding: utf-8 -*-
#
# pyhwp : hwp file format parser in python
# Copyright (C) 2010-2023 mete0r <https://github.com/mete0r>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
from __future__ import absolute_import
from __future__ import print_function
from __future__ import unicode_literals
import io
import os.path
import sys
PY3 = sys.version_info.major == 3
if PY3:
basestring = str
def is_storage(item):
return hasattr(item, '__iter__') and hasattr(item, '__getitem__')
def is_stream(item):
return hasattr(item, 'open') and callable(item.open)
class ItemWrapper(object):
def __init__(self, wrapped):
self.wrapped = wrapped
def __getattr__(self, name):
return getattr(self.wrapped, name)
class StorageWrapper(ItemWrapper):
def __iter__(self):
return iter(self.wrapped)
def __getitem__(self, name):
return self.wrapped[name]
class ItemConversionStorage(StorageWrapper):
def __getitem__(self, name):
item = self.wrapped[name]
# 기반 스토리지에서 찾은 아이템에 대해, conversion()한다.
conversion = self.resolve_conversion_for(name)
if conversion:
return conversion(item)
return item
def resolve_conversion_for(self, name):
''' return a conversion function for the specified storage item '''
pass
class ExtraItemStorage(StorageWrapper):
def __iter__(self):
for name in self.wrapped:
yield name
item = self.wrapped[name]
if hasattr(item, 'other_formats'):
other_formats = item.other_formats()
if other_formats:
for ext in other_formats:
yield name + ext
def __getitem__(self, name):
try:
item = self.wrapped[name]
if is_storage(item):
item = ExtraItemStorage(item)
return item
except KeyError:
# 기반 스토리지에는 없으므로, other_formats() 중에서 찾아본다.
for root in self.wrapped:
item = self.wrapped[root]
if hasattr(item, 'other_formats'):
other_formats = item.other_formats()
if other_formats:
for ext, func in other_formats.items():
if root + ext == name:
return Open2Stream(func)
raise
class Open2Stream(object):
def __init__(self, open):
self.open = open
def iter_storage_leafs(stg, basepath=''):
''' iterate every leaf nodes in the storage
stg: an instance of Storage
'''
for name in stg:
path = basepath + name
item = stg[name]
if is_storage(item):
for x in iter_storage_leafs(item, path + '/'):
yield x
else:
yield path
def unpack(stg, outbase):
''' unpack a storage into outbase directory
stg: an instance of Storage
outbase: path to a directory in filesystem (should not end with '/')
'''
for name in stg:
outpath = os.path.join(outbase, name)
item = stg[name]
if is_storage(item):
if not os.path.exists(outpath):
os.mkdir(outpath)
unpack(item, outpath)
else:
f = item.open()
try:
outpath = outpath.replace('\x05', '_05')
with io.open(outpath, 'wb') as outfile:
outfile.write(f.read())
finally:
f.close()
def open_storage_item(stg, path):
if isinstance(path, basestring):
path_segments = path.split('/')
else:
path_segments = path
item = stg
for name in path_segments:
item = item[name]
return item
def printstorage(stg, basepath=''):
names = list(stg)
names.sort()
for name in names:
path = basepath + name
item = stg[name]
if is_storage(item):
printstorage(item, path + '/')
elif is_stream(item):
print(path.encode('unicode_escape').decode('utf-8'))
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