wrw/filesys.py

   1 import os
   2 import resp
   3 pj = os.path.join
   4
   5 __all__ = ["filehandler"]
   6
   7 class filehandler(object):
   8     def __init__(self, basedir):
   9         self.basedir = basedir
  10
  11     def handledir(self, req, path):
  12         raise resp.notfound()
  13
  14     def handlefile(self, req, path):
  15         ctype = "application/octet-stream"
  16         bn = os.path.basename(path)
  17         if '.' in bn:
  18             ext = bn[bn.rindex('.') + 1:].lower()
  19             if ext == "jpg" or ext == "jpeg":
  20                 ctype = "image/jpeg"
  21             elif ext == "png":
  22                 ctype = "image/png"
  23             elif ext == "gif":
  24                 ctype = "image/gif"
  25             elif ext == "txt":
  26                 ctype = "text/plain"
  27             elif ext == "css":
  28                 ctype = "text/css"
  29             elif ext == "html":
  30                 ctype = "text/html"
  31         req.ohead["Content-Type"] = ctype
  32         return open(path, "r")
  33
  34     def resolvefile(self, req, curpath, el):
  35         if os.path.isfile(pj(curpath, el)):
  36             return pj(curpath, el)
  37         if '.' not in el:
  38             for f in os.listdir(curpath):
  39                 p = f.find('.')
  40                 if p > 0:
  41                     if f[:p] == el:
  42                         return pj(curpath, f)
  43         raise resp.notfound()
  44
  45     def handlefinal(self, req, curpath, el):
  46         if el == "":
  47             return self.handledir(req, curpath)
  48         return self.handlefile(req, self.resolvefile(req, curpath, el))
  49
  50     def handlenonfinal(self, req, curpath, el, rest):
  51         raise resp.notfound()
  52
  53     def handleentry(self, req, curpath, el, rest):
  54         if el == "":
  55             raise resp.notfound()
  56         if '/' in el or el[0] == '.':
  57             raise resp.notfound()
  58         if os.path.isdir(pj(curpath, el)):
  59             return self.handlepath(req, pj(curpath, el), rest)
  60         return self.handlenonfinal(req, curpath, el, rest)
  61
  62     def handlepath(self, req, curpath, rest):
  63         p = rest.find('/')
  64         if p < 0:
  65             return self.handlefinal(req, curpath, rest)
  66         else:
  67             return self.handleentry(req, curpath, rest[:p], rest[p + 1:])
  68
  69     def handle(self, req):
  70         pi = req.pathinfo
  71         if len(pi) > 0 and pi[0] == '/':
  72             pi = pi[1:]
  73         return self.handlepath(req, self.basedir, pi)