def getSource(self, file_name):
from fs.dependency import changed_since, newer_group
src = join(structure.CSS_DIR,file_name)
if not isdir(src):
raise tornado.web.HTTPError(404)
target = join(self.application.site["target_path"],"css",file_name)
text = None
srcs = []
srcs = fs.listdir(structure.CSS_DIR,recursed=True,full_path=True)
#TODO record dependency with target
if newer_group(srcs,target) or self.request.headers.get("force",False):
lines = combine_asset_sources(src,structure.CSS_DIR,source_node=CssSourceNode)
import codecs
with codecs.open(target,"w",encoding="utf-8") as f:
text = u''.join(lines)
f.write(text)
f.flush()
if not text:
with open(target,"r") as f:
text = f.read()
return text
def newer_assets(src,target,source_node=SourceNode):
"""
Are files needed to produce target path, found in the directory src path, newer in src path
than target path."""
sources = source_node.list_dependencies(src)
return newer_group(sources,target)