Mercurial > hg > mercurial-crew-with-dirclash
view mercurial/lock.py @ 1411:e2ba788545bf
hgweb: make viewing of non-text work in hgweb
We use mimetypes.guess_type to guess file types and util.binary to determine
whether a file is displayable as text.
This lets us display displayable text files in our normal source view.
Files that appear to be binary will be displayed as something like
"(binary:image/gif)".
Clicking on raw view will send the raw file with an appropriate MIME
type. Thus things like GIFs will now be viewable inside hgweb without
making a mess. Further, things like postscript files that are text
should show source in the normal view and a browser can launch a
postscript viewer for the raw view.
author | Matt Mackall <mpm@selenic.com> |
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date | Tue, 18 Oct 2005 23:50:55 -0700 |
parents | 6d5a62a549fa |
children | abfab59fce79 |
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# lock.py - simple locking scheme for mercurial # # Copyright 2005 Matt Mackall <mpm@selenic.com> # # This software may be used and distributed according to the terms # of the GNU General Public License, incorporated herein by reference. import os, time import util class LockHeld(Exception): pass class lock: def __init__(self, file, wait=1): self.f = file self.held = 0 self.wait = wait self.lock() def __del__(self): self.release() def lock(self): while 1: try: self.trylock() return 1 except LockHeld, inst: if self.wait: time.sleep(1) continue raise inst def trylock(self): pid = os.getpid() try: util.makelock(str(pid), self.f) self.held = 1 except (OSError, IOError): raise LockHeld(util.readlock(self.f)) def release(self): if self.held: self.held = 0 try: os.unlink(self.f) except: pass