Mercurial > hg > pyhgsh
view mercurial/transaction.py @ 2148:c72e618c1204
Add MOTD display to hgweb and hgwebdir.
The hgweb "footer" template now has space for an optional message of
the day (MOTD). This is used in two contexts:
1) On the hgwebdir index page
2) On various pages of each individual repo
For both cases, the MOTD is read out of an entry named "motd" in the
[web] section of a config file -- the only difference is which file is
used. For #1, you need to add the section to hgweb.config; for #2, you
need to add to the repo's .hgrc file.
I suggest something like this:
[web]
motd = <p>To download these repositories, <a href="http://www.selenic.com/mercurial">get Mercurial</a> and then type something like:</p><p><pre>hg clone http://gs3080.sp.cs.cmu.edu/hg.cgi/cpmpy</pre></p>You can also click the Download links to get an archive of the latest revision.
An online sample is available here:
http://gs3080.sp.cs.cmu.edu/hg.cgi
author | Colin McMillen <mcmillen@cs.cmu.edu> |
---|---|
date | Thu, 27 Apr 2006 22:11:13 -0700 |
parents | d66278012853 |
children |
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# transaction.py - simple journalling scheme for mercurial # # This transaction scheme is intended to gracefully handle program # errors and interruptions. More serious failures like system crashes # can be recovered with an fsck-like tool. As the whole repository is # effectively log-structured, this should amount to simply truncating # anything that isn't referenced in the changelog. # # 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 from i18n import gettext as _ class transaction(object): def __init__(self, report, opener, journal, after=None): self.journal = None # abort here if the journal already exists if os.path.exists(journal): raise AssertionError(_("journal already exists - run hg recover")) self.count = 1 self.report = report self.opener = opener self.after = after self.entries = [] self.map = {} self.journal = journal self.file = open(self.journal, "w") def __del__(self): if self.journal: if self.entries: self.abort() self.file.close() try: os.unlink(self.journal) except: pass def add(self, file, offset, data=None): if file in self.map: return self.entries.append((file, offset, data)) self.map[file] = len(self.entries) - 1 # add enough data to the journal to do the truncate self.file.write("%s\0%d\n" % (file, offset)) self.file.flush() def find(self, file): if file in self.map: return self.entries[self.map[file]] return None def replace(self, file, offset, data=None): if file not in self.map: raise KeyError(file) index = self.map[file] self.entries[index] = (file, offset, data) self.file.write("%s\0%d\n" % (file, offset)) self.file.flush() def nest(self): self.count += 1 return self def running(self): return self.count > 0 def close(self): self.count -= 1 if self.count != 0: return self.file.close() self.entries = [] if self.after: self.after() else: os.unlink(self.journal) self.journal = None def abort(self): if not self.entries: return self.report(_("transaction abort!\n")) for f, o, ignore in self.entries: try: self.opener(f, "a").truncate(o) except: self.report(_("failed to truncate %s\n") % f) self.entries = [] self.report(_("rollback completed\n")) def rollback(opener, file): files = {} for l in open(file).readlines(): f, o = l.split('\0') files[f] = o for f in files: o = files[f] opener(f, "a").truncate(int(o)) os.unlink(file)