forked from MarseyWorld/MarseyWorld
50 lines
1.3 KiB
Python
50 lines
1.3 KiB
Python
import os
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import zlib
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from collections import defaultdict
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import gevent
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import gevent_inotifyx as inotify
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ASSET_DIR = 'files/assets'
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ASSET_SUBDIRS = ['/css', '/js']
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ASSET_URL = '/assets/'
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ASSET_CACHE = defaultdict(lambda: None)
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def assetcache_build(asset_dir, subdirs):
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for subdir in subdirs:
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for root, dirs, files in os.walk(asset_dir + subdir):
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for fname in files:
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fpath = root + '/' + fname
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relpath = fpath[len(asset_dir) + 1:].replace('\\', '/')
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with open(fpath, 'rb') as f:
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fhash = zlib.crc32(f.read())
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ASSET_CACHE[relpath] = '%x' % fhash
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def assetcache_hash(asset_path):
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return ASSET_CACHE[asset_path]
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def assetcache_path(asset_path):
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cachehash = assetcache_hash(asset_path)
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url = ASSET_URL + asset_path
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if cachehash:
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url += '?v=' + cachehash
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return url
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def assetcache_watch_directories(asset_dir, subdirs):
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fd = inotify.init()
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try:
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for sd in subdirs:
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inotify.add_watch(fd, asset_dir + sd, inotify.IN_CLOSE_WRITE)
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while True:
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for event in inotify.get_events(fd, 0):
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print("Rebuilding assetcache: " + event.name, flush=True)
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assetcache_build(asset_dir, subdirs)
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break
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gevent.sleep(0.5)
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finally:
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os.close(fd)
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assetcache_build(ASSET_DIR, ASSET_SUBDIRS)
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gevent.spawn(assetcache_watch_directories, ASSET_DIR, ASSET_SUBDIRS)
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