Mercurial > hg > mercurial-crew-with-dirclash
view mercurial/changelog.py @ 3755:05120e210c65
Use unsigned version format.
This way can use one additional bit, and when encountering invalid revlogs
with the first bit set don't produce python warnings or strange error messages.
author | Thomas Arendsen Hein <thomas@intevation.de> |
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date | Fri, 01 Dec 2006 23:27:53 +0100 |
parents | f2de6b6bc57a |
children | 29d91e57d055 |
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# changelog.py - changelog class for mercurial # # Copyright 2005, 2006 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. from revlog import * from i18n import gettext as _ from demandload import demandload demandload(globals(), "os time util") def _string_escape(text): """ >>> d = {'nl': chr(10), 'bs': chr(92), 'cr': chr(13), 'nul': chr(0)} >>> s = "ab%(nl)scd%(bs)s%(bs)sn%(nul)sab%(cr)scd%(bs)s%(nl)s" % d >>> s 'ab\\ncd\\\\\\\\n\\x00ab\\rcd\\\\\\n' >>> res = _string_escape(s) >>> s == _string_unescape(res) True """ # subset of the string_escape codec text = text.replace('\\', '\\\\').replace('\n', '\\n').replace('\r', '\\r') return text.replace('\0', '\\0') def _string_unescape(text): return text.decode('string_escape') class changelog(revlog): def __init__(self, opener, defversion=REVLOGV0): revlog.__init__(self, opener, "00changelog.i", "00changelog.d", defversion) def decode_extra(self, text): extra = {} for l in text.split('\0'): if not l: continue k, v = _string_unescape(l).split(':', 1) extra[k] = v return extra def encode_extra(self, d): items = [_string_escape(":".join(t)) for t in d.iteritems()] return "\0".join(items) def extract(self, text): """ format used: nodeid\n : manifest node in ascii user\n : user, no \n or \r allowed time tz extra\n : date (time is int or float, timezone is int) : extra is metadatas, encoded and separated by '\0' : older versions ignore it files\n\n : files modified by the cset, no \n or \r allowed (.*) : comment (free text, ideally utf-8) changelog v0 doesn't use extra """ if not text: return (nullid, "", (0, 0), [], "", {}) last = text.index("\n\n") desc = text[last + 2:] l = text[:last].split('\n') manifest = bin(l[0]) user = l[1] extra_data = l[2].split(' ', 2) if len(extra_data) != 3: time = float(extra_data.pop(0)) try: # various tools did silly things with the time zone field. timezone = int(extra_data[0]) except: timezone = 0 extra = {} else: time, timezone, extra = extra_data time, timezone = float(time), int(timezone) extra = self.decode_extra(extra) files = l[3:] return (manifest, user, (time, timezone), files, desc, extra) def read(self, node): return self.extract(self.revision(node)) def add(self, manifest, list, desc, transaction, p1=None, p2=None, user=None, date=None, extra={}): if date: parseddate = "%d %d" % util.parsedate(date) else: parseddate = "%d %d" % util.makedate() if extra: extra = self.encode_extra(extra) parseddate = "%s %s" % (parseddate, extra) list.sort() l = [hex(manifest), user, parseddate] + list + ["", desc] text = "\n".join(l) return self.addrevision(text, transaction, self.count(), p1, p2)