eggs/mercurial-1.7.3-py2.6-linux-x86_64.egg/hgext/convert/monotone.py
author Nishanth Amuluru <nishanth@fossee.in>
Sun, 09 Jan 2011 20:33:08 +0530
changeset 131 602a909e9e16
parent 69 c6bca38c1cbf
permissions -rw-r--r--
added under_construction view and used it
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# monotone.py - monotone support for the convert extension
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#
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#  Copyright 2008, 2009 Mikkel Fahnoe Jorgensen <mikkel@dvide.com> and
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#  others
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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import os, re
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from mercurial import util
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from common import NoRepo, commit, converter_source, checktool
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from common import commandline
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from mercurial.i18n import _
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class monotone_source(converter_source, commandline):
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    def __init__(self, ui, path=None, rev=None):
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        converter_source.__init__(self, ui, path, rev)
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        commandline.__init__(self, ui, 'mtn')
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        self.ui = ui
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        self.path = path
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        norepo = NoRepo(_("%s does not look like a monotone repository")
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                        % path)
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        if not os.path.exists(os.path.join(path, '_MTN')):
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            # Could be a monotone repository (SQLite db file)
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            try:
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                header = file(path, 'rb').read(16)
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            except:
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                header = ''
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            if header != 'SQLite format 3\x00':
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                raise norepo
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        # regular expressions for parsing monotone output
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        space    = r'\s*'
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        name     = r'\s+"((?:\\"|[^"])*)"\s*'
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        value    = name
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        revision = r'\s+\[(\w+)\]\s*'
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        lines    = r'(?:.|\n)+'
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        self.dir_re      = re.compile(space + "dir" + name)
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        self.file_re     = re.compile(space + "file" + name +
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                                      "content" + revision)
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        self.add_file_re = re.compile(space + "add_file" + name +
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                                      "content" + revision)
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        self.patch_re    = re.compile(space + "patch" + name +
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                                      "from" + revision + "to" + revision)
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        self.rename_re   = re.compile(space + "rename" + name + "to" + name)
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        self.delete_re   = re.compile(space + "delete" + name)
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        self.tag_re      = re.compile(space + "tag" + name + "revision" +
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                                      revision)
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        self.cert_re     = re.compile(lines + space + "name" + name +
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                                      "value" + value)
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        attr = space + "file" + lines + space + "attr" + space
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        self.attr_execute_re = re.compile(attr  + '"mtn:execute"' +
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                                          space + '"true"')
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        # cached data
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        self.manifest_rev = None
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        self.manifest = None
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        self.files = None
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        self.dirs  = None
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        checktool('mtn', abort=False)
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        # test if there are any revisions
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        self.rev = None
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        try:
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            self.getheads()
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        except:
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            raise norepo
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        self.rev = rev
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    def mtnrun(self, *args, **kwargs):
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        kwargs['d'] = self.path
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        return self.run0('automate', *args, **kwargs)
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    def mtnloadmanifest(self, rev):
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        if self.manifest_rev == rev:
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            return
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        self.manifest = self.mtnrun("get_manifest_of", rev).split("\n\n")
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        self.manifest_rev = rev
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        self.files = {}
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        self.dirs = {}
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        for e in self.manifest:
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            m = self.file_re.match(e)
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            if m:
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                attr = ""
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                name = m.group(1)
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                node = m.group(2)
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                if self.attr_execute_re.match(e):
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                    attr += "x"
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                self.files[name] = (node, attr)
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            m = self.dir_re.match(e)
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            if m:
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                self.dirs[m.group(1)] = True
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    def mtnisfile(self, name, rev):
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        # a non-file could be a directory or a deleted or renamed file
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        self.mtnloadmanifest(rev)
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        return name in self.files
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    def mtnisdir(self, name, rev):
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        self.mtnloadmanifest(rev)
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        return name in self.dirs
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    def mtngetcerts(self, rev):
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        certs = {"author":"<missing>", "date":"<missing>",
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            "changelog":"<missing>", "branch":"<missing>"}
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        certlist = self.mtnrun("certs", rev)
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        # mtn < 0.45:
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        #   key "test@selenic.com"
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        # mtn >= 0.45:
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        #   key [ff58a7ffb771907c4ff68995eada1c4da068d328]
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        certlist = re.split('\n\n      key ["\[]', certlist)
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        for e in certlist:
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            m = self.cert_re.match(e)
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            if m:
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                name, value = m.groups()
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                value = value.replace(r'\"', '"')
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                value = value.replace(r'\\', '\\')
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                certs[name] = value
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        # Monotone may have subsecond dates: 2005-02-05T09:39:12.364306
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        # and all times are stored in UTC
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        certs["date"] = certs["date"].split('.')[0] + " UTC"
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        return certs
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    # implement the converter_source interface:
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    def getheads(self):
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        if not self.rev:
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            return self.mtnrun("leaves").splitlines()
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        else:
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            return [self.rev]
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    def getchanges(self, rev):
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        #revision = self.mtncmd("get_revision %s" % rev).split("\n\n")
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        revision = self.mtnrun("get_revision", rev).split("\n\n")
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        files = {}
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        ignoremove = {}
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        renameddirs = []
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        copies = {}
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        for e in revision:
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            m = self.add_file_re.match(e)
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            if m:
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                files[m.group(1)] = rev
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                ignoremove[m.group(1)] = rev
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            m = self.patch_re.match(e)
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            if m:
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                files[m.group(1)] = rev
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            # Delete/rename is handled later when the convert engine
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            # discovers an IOError exception from getfile,
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            # but only if we add the "from" file to the list of changes.
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            m = self.delete_re.match(e)
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            if m:
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                files[m.group(1)] = rev
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            m = self.rename_re.match(e)
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            if m:
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                toname = m.group(2)
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                fromname = m.group(1)
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                if self.mtnisfile(toname, rev):
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                    ignoremove[toname] = 1
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                    copies[toname] = fromname
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                    files[toname] = rev
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                    files[fromname] = rev
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                elif self.mtnisdir(toname, rev):
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                    renameddirs.append((fromname, toname))
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        # Directory renames can be handled only once we have recorded
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        # all new files
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        for fromdir, todir in renameddirs:
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            renamed = {}
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            for tofile in self.files:
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                if tofile in ignoremove:
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                    continue
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                if tofile.startswith(todir + '/'):
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                    renamed[tofile] = fromdir + tofile[len(todir):]
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                    # Avoid chained moves like:
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                    # d1(/a) => d3/d1(/a)
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                    # d2 => d3
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                    ignoremove[tofile] = 1
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            for tofile, fromfile in renamed.items():
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                self.ui.debug (_("copying file in renamed directory "
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                                 "from '%s' to '%s'")
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                               % (fromfile, tofile), '\n')
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                files[tofile] = rev
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                copies[tofile] = fromfile
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            for fromfile in renamed.values():
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                files[fromfile] = rev
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        return (files.items(), copies)
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    def getfile(self, name, rev):
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        if not self.mtnisfile(name, rev):
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            raise IOError() # file was deleted or renamed
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        try:
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            data = self.mtnrun("get_file_of", name, r=rev)
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        except:
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            raise IOError() # file was deleted or renamed
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        self.mtnloadmanifest(rev)
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        node, attr = self.files.get(name, (None, ""))
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        return data, attr
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    def getcommit(self, rev):
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        certs   = self.mtngetcerts(rev)
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        return commit(
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            author=certs["author"],
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            date=util.datestr(util.strdate(certs["date"], "%Y-%m-%dT%H:%M:%S")),
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            desc=certs["changelog"],
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            rev=rev,
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            parents=self.mtnrun("parents", rev).splitlines(),
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            branch=certs["branch"])
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    def gettags(self):
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        tags = {}
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        for e in self.mtnrun("tags").split("\n\n"):
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            m = self.tag_re.match(e)
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            if m:
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                tags[m.group(1)] = m.group(2)
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        return tags
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    def getchangedfiles(self, rev, i):
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        # This function is only needed to support --filemap
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        # ... and we don't support that
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        raise NotImplementedError()