Files
ttsmirror/ttsmirror.py
2017-09-19 18:34:36 +01:00

126 lines
4.1 KiB
Python

import os
import logging
import json
import hashlib
from urllib.parse import urljoin
import requests
__version__ = '0.1'
__author__ = 'Andrew Williams'
class MirrorExceptionBase(Exception):
"""Base exception for all mirroring issues"""
def __init__(self, msg):
self.msg = msg
def __unicode__(self):
return self.msg
def __str__(self):
return self.__unicode__()
class MissingFileExecption(MirrorExceptionBase):
"""Raised when a source file is missing"""
pass
class UnknownErrorException(MirrorExceptionBase):
"""Raised when an unknown issue is encountered when mirroring"""
pass
def iterate_save(obj, output_path, url_prefix, hash_filename=False):
"""
Iterate a save, download assets, and update the locations as needed.
:param obj:
:param output_path:
:param url_prefix:
:return:
:rtype: dict
"""
if isinstance(obj, dict):
iter = obj.items()
elif isinstance(obj, list):
iter = enumerate(obj)
for key, val in iter:
if isinstance(val, dict) or isinstance(val, list):
res = iterate_save(val, output_path, url_prefix, hash_filename)
obj[key] = res
if isinstance(val, str):
if key.lower()[-3:] == 'url' and val.strip() != '':
# If the Unique URL tag is added, remove it and ensure we set it later
if '{Unique}' in val:
val = val.replace('{Unique}', '')
unique = True
else:
unique = False
# Generate new filename
if hash_filename:
new_filename = hashlib.sha1(val.encode('utf-8')).hexdigest()
else:
new_filename = val
for rep in [':', '/', '?', '=']:
new_filename = new_filename.replace(rep, '_')
# Check if exists
if not os.path.exists(os.path.join(output_path, new_filename)):
res = requests.get(val, stream=True)
if res.ok:
res.raw.decode_content = True
with open(os.path.join(output_path, new_filename), 'wb') as outfile:
for chunk in res:
outfile.write(chunk)
elif res.status_code == 404:
raise MissingFileExecption('%s returned a 404' % val)
else:
raise UnknownErrorException('URL %s returned code %d' % (val, res.status_code))
if unique:
new_filename = new_filename + '{Unique}'
obj[key] = urljoin(url_prefix, new_filename)
return obj
def process_save(filename, output_path, url_prefix, hash_filename):
"""Parses TTS JSON save file and mirrors the required objects."""
new_filename = '%s_new.json' % filename.replace('.', '_')
with open(filename, 'r') as fobj:
save = json.load(fobj)
try:
new_save = iterate_save(save, output_path, url_prefix, hash_filename)
except Exception:
logging.exception('Unable to process save')
return
new_save['SaveName'] = '%s - Mirrored' % new_save['SaveName']
with open(new_filename, 'w') as outfobj:
outfobj.write(json.dumps(new_save, sort_keys=True, indent=4, separators=(',', ': ')))
logging.debug('Done, wrote %s', new_filename)
def main():
import argparse
import sys
parser = argparse.ArgumentParser('ttsmirror.py')
parser.add_argument('save_file')
parser.add_argument('output_path', default=os.path.curdir)
parser.add_argument('url_prefix')
parser.add_argument('--hash_filename', action='store_true', dest='hash_filename')
logging.basicConfig(level=logging.DEBUG)
args = parser.parse_args()
if not os.path.exists(os.path.abspath(args.save_file)):
logging.error('Unknown file %s', args.save_file)
sys.exit(1)
process_save(args.save_file, args.output_path, args.url_prefix, args.hash_filename)
if __name__ == '__main__':
main()