author | Benoit Boissinot <benoit.boissinot@ens-lyon.org> |
Sun, 10 Dec 2006 00:06:43 +0100 | |
changeset 3849 | 972d14a5a227 |
parent 3772 | 29d91e57d055 |
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permissions | -rw-r--r-- |
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# changelog.py - changelog class for mercurial |
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# |
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# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com> |
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# |
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# This software may be used and distributed according to the terms |
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# of the GNU General Public License, incorporated herein by reference. |
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from revlog import * |
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from i18n import gettext as _ |
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from demandload import demandload |
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demandload(globals(), "os time util") |
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def _string_escape(text): |
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""" |
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>>> d = {'nl': chr(10), 'bs': chr(92), 'cr': chr(13), 'nul': chr(0)} |
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>>> s = "ab%(nl)scd%(bs)s%(bs)sn%(nul)sab%(cr)scd%(bs)s%(nl)s" % d |
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>>> s |
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'ab\\ncd\\\\\\\\n\\x00ab\\rcd\\\\\\n' |
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>>> res = _string_escape(s) |
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>>> s == _string_unescape(res) |
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True |
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""" |
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# subset of the string_escape codec |
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text = text.replace('\\', '\\\\').replace('\n', '\\n').replace('\r', '\\r') |
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return text.replace('\0', '\\0') |
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def _string_unescape(text): |
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return text.decode('string_escape') |
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class changelog(revlog): |
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def __init__(self, opener, defversion=REVLOGV0): |
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revlog.__init__(self, opener, "00changelog.i", "00changelog.d", |
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defversion) |
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def decode_extra(self, text): |
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extra = {} |
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for l in text.split('\0'): |
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if not l: |
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continue |
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k, v = _string_unescape(l).split(':', 1) |
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extra[k] = v |
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return extra |
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def encode_extra(self, d): |
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items = [_string_escape(":".join(t)) for t in d.iteritems()] |
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return "\0".join(items) |
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def extract(self, text): |
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""" |
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format used: |
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nodeid\n : manifest node in ascii |
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user\n : user, no \n or \r allowed |
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time tz extra\n : date (time is int or float, timezone is int) |
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: extra is metadatas, encoded and separated by '\0' |
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: older versions ignore it |
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files\n\n : files modified by the cset, no \n or \r allowed |
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(.*) : comment (free text, ideally utf-8) |
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changelog v0 doesn't use extra |
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""" |
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if not text: |
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return (nullid, "", (0, 0), [], "", {}) |
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last = text.index("\n\n") |
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desc = util.tolocal(text[last + 2:]) |
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l = text[:last].split('\n') |
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manifest = bin(l[0]) |
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user = util.tolocal(l[1]) |
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extra_data = l[2].split(' ', 2) |
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if len(extra_data) != 3: |
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time = float(extra_data.pop(0)) |
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try: |
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# various tools did silly things with the time zone field. |
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timezone = int(extra_data[0]) |
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except: |
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timezone = 0 |
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extra = {} |
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else: |
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time, timezone, extra = extra_data |
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time, timezone = float(time), int(timezone) |
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extra = self.decode_extra(extra) |
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files = l[3:] |
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return (manifest, user, (time, timezone), files, desc, extra) |
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def read(self, node): |
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return self.extract(self.revision(node)) |
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def add(self, manifest, list, desc, transaction, p1=None, p2=None, |
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user=None, date=None, extra={}): |
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user, desc = util.fromlocal(user), util.fromlocal(desc) |
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if date: |
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parseddate = "%d %d" % util.parsedate(date) |
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else: |
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parseddate = "%d %d" % util.makedate() |
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if extra: |
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extra = self.encode_extra(extra) |
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parseddate = "%s %s" % (parseddate, extra) |
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list.sort() |
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l = [hex(manifest), user, parseddate] + list + ["", desc] |
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text = "\n".join(l) |
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return self.addrevision(text, transaction, self.count(), p1, p2) |