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#
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# Mercurial built-in replacement for cvsps.
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#
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# Copyright 2008, Frank Kingswood <frank@kingswood-consulting.co.uk>
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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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import os
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import re
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import cPickle as pickle
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from mercurial import util
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from mercurial.i18n import _
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def listsort(list, key):
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"helper to sort by key in Python 2.3"
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try:
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list.sort(key=key)
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except TypeError:
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list.sort(lambda l, r: cmp(key(l), key(r)))
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class logentry(object):
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'''Class logentry has the following attributes:
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.author - author name as CVS knows it
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.branch - name of branch this revision is on
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.branches - revision tuple of branches starting at this revision
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.comment - commit message
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.date - the commit date as a (time, tz) tuple
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.dead - true if file revision is dead
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.file - Name of file
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.lines - a tuple (+lines, -lines) or None
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.parent - Previous revision of this entry
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.rcs - name of file as returned from CVS
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.revision - revision number as tuple
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.tags - list of tags on the file
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.synthetic - is this a synthetic "file ... added on ..." revision?
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'''
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def __init__(self, **entries):
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self.__dict__.update(entries)
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class logerror(Exception):
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pass
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def getrepopath(cvspath):
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"""Return the repository path from a CVS path.
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>>> getrepopath('/foo/bar')
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'/foo/bar'
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>>> getrepopath('c:/foo/bar')
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'c:/foo/bar'
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>>> getrepopath(':pserver:10/foo/bar')
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'/foo/bar'
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>>> getrepopath(':pserver:10c:/foo/bar')
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'/foo/bar'
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>>> getrepopath(':pserver:/foo/bar')
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'/foo/bar'
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>>> getrepopath(':pserver:c:/foo/bar')
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'c:/foo/bar'
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>>> getrepopath(':pserver:truc@foo.bar:/foo/bar')
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'/foo/bar'
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>>> getrepopath(':pserver:truc@foo.bar:c:/foo/bar')
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'c:/foo/bar'
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"""
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# According to CVS manual, CVS paths are expressed like:
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# [:method:][[user][:password]@]hostname[:[port]]/path/to/repository
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#
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# Unfortunately, Windows absolute paths start with a drive letter
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# like 'c:' making it harder to parse. Here we assume that drive
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# letters are only one character long and any CVS component before
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# the repository path is at least 2 characters long, and use this
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# to disambiguate.
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parts = cvspath.split(':')
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if len(parts) == 1:
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return parts[0]
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# Here there is an ambiguous case if we have a port number
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# immediately followed by a Windows driver letter. We assume this
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# never happens and decide it must be CVS path component,
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# therefore ignoring it.
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if len(parts[-2]) > 1:
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return parts[-1].lstrip('0123456789')
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return parts[-2] + ':' + parts[-1]
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def createlog(ui, directory=None, root="", rlog=True, cache=None):
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'''Collect the CVS rlog'''
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# Because we store many duplicate commit log messages, reusing strings
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# saves a lot of memory and pickle storage space.
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_scache = {}
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def scache(s):
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"return a shared version of a string"
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return _scache.setdefault(s, s)
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ui.status(_('collecting CVS rlog\n'))
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log = [] # list of logentry objects containing the CVS state
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# patterns to match in CVS (r)log output, by state of use
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re_00 = re.compile('RCS file: (.+)$')
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re_01 = re.compile('cvs \\[r?log aborted\\]: (.+)$')
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re_02 = re.compile('cvs (r?log|server): (.+)\n$')
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re_03 = re.compile("(Cannot access.+CVSROOT)|(can't create temporary directory.+)$")
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re_10 = re.compile('Working file: (.+)$')
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re_20 = re.compile('symbolic names:')
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re_30 = re.compile('\t(.+): ([\\d.]+)$')
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re_31 = re.compile('----------------------------$')
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re_32 = re.compile('=============================================================================$')
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re_50 = re.compile('revision ([\\d.]+)(\s+locked by:\s+.+;)?$')
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re_60 = re.compile(r'date:\s+(.+);\s+author:\s+(.+);\s+state:\s+(.+?);(\s+lines:\s+(\+\d+)?\s+(-\d+)?;)?')
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re_70 = re.compile('branches: (.+);$')
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file_added_re = re.compile(r'file [^/]+ was (initially )?added on branch')
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prefix = '' # leading path to strip of what we get from CVS
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if directory is None:
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# Current working directory
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# Get the real directory in the repository
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try:
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prefix = file(os.path.join('CVS','Repository')).read().strip()
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if prefix == ".":
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prefix = ""
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directory = prefix
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except IOError:
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raise logerror('Not a CVS sandbox')
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if prefix and not prefix.endswith(os.sep):
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prefix += os.sep
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# Use the Root file in the sandbox, if it exists
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try:
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root = file(os.path.join('CVS','Root')).read().strip()
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except IOError:
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pass
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if not root:
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root = os.environ.get('CVSROOT', '')
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# read log cache if one exists
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oldlog = []
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date = None
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if cache:
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cachedir = os.path.expanduser('~/.hg.cvsps')
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if not os.path.exists(cachedir):
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os.mkdir(cachedir)
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# The cvsps cache pickle needs a uniquified name, based on the
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# repository location. The address may have all sort of nasties
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# in it, slashes, colons and such. So here we take just the
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# alphanumerics, concatenated in a way that does not mix up the
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# various components, so that
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# :pserver:user@server:/path
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# and
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# /pserver/user/server/path
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# are mapped to different cache file names.
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cachefile = root.split(":") + [directory, "cache"]
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cachefile = ['-'.join(re.findall(r'\w+', s)) for s in cachefile if s]
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cachefile = os.path.join(cachedir,
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'.'.join([s for s in cachefile if s]))
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if cache == 'update':
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try:
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ui.note(_('reading cvs log cache %s\n') % cachefile)
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oldlog = pickle.load(file(cachefile))
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ui.note(_('cache has %d log entries\n') % len(oldlog))
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except Exception, e:
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ui.note(_('error reading cache: %r\n') % e)
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if oldlog:
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date = oldlog[-1].date # last commit date as a (time,tz) tuple
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date = util.datestr(date, '%Y/%m/%d %H:%M:%S %1%2')
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# build the CVS commandline
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cmd = ['cvs', '-q']
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if root:
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cmd.append('-d%s' % root)
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p = util.normpath(getrepopath(root))
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if not p.endswith('/'):
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p += '/'
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prefix = p + util.normpath(prefix)
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cmd.append(['log', 'rlog'][rlog])
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if date:
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# no space between option and date string
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cmd.append('-d>%s' % date)
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cmd.append(directory)
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# state machine begins here
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tags = {} # dictionary of revisions on current file with their tags
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state = 0
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store = False # set when a new record can be appended
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cmd = [util.shellquote(arg) for arg in cmd]
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ui.note(_("running %s\n") % (' '.join(cmd)))
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ui.debug(_("prefix=%r directory=%r root=%r\n") % (prefix, directory, root))
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pfp = util.popen(' '.join(cmd))
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peek = pfp.readline()
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while True:
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line = peek
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if line == '':
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break
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peek = pfp.readline()
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if line.endswith('\n'):
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line = line[:-1]
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#ui.debug('state=%d line=%r\n' % (state, line))
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if state == 0:
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# initial state, consume input until we see 'RCS file'
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match = re_00.match(line)
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if match:
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rcs = match.group(1)
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tags = {}
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if rlog:
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filename = util.normpath(rcs[:-2])
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if filename.startswith(prefix):
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filename = filename[len(prefix):]
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if filename.startswith('/'):
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filename = filename[1:]
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if filename.startswith('Attic/'):
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filename = filename[6:]
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else:
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filename = filename.replace('/Attic/', '/')
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state = 2
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continue
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state = 1
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continue
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match = re_01.match(line)
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if match:
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raise Exception(match.group(1))
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match = re_02.match(line)
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if match:
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raise Exception(match.group(2))
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if re_03.match(line):
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raise Exception(line)
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elif state == 1:
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# expect 'Working file' (only when using log instead of rlog)
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match = re_10.match(line)
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assert match, _('RCS file must be followed by working file')
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filename = util.normpath(match.group(1))
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state = 2
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elif state == 2:
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# expect 'symbolic names'
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if re_20.match(line):
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state = 3
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elif state == 3:
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# read the symbolic names and store as tags
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match = re_30.match(line)
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if match:
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rev = [int(x) for x in match.group(2).split('.')]
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# Convert magic branch number to an odd-numbered one
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revn = len(rev)
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if revn > 3 and (revn % 2) == 0 and rev[-2] == 0:
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rev = rev[:-2] + rev[-1:]
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rev = tuple(rev)
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if rev not in tags:
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tags[rev] = []
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tags[rev].append(match.group(1))
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elif re_31.match(line):
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state = 5
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elif re_32.match(line):
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state = 0
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elif state == 4:
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# expecting '------' separator before first revision
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if re_31.match(line):
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state = 5
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else:
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assert not re_32.match(line), _('must have at least some revisions')
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elif state == 5:
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# expecting revision number and possibly (ignored) lock indication
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# we create the logentry here from values stored in states 0 to 4,
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# as this state is re-entered for subsequent revisions of a file.
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match = re_50.match(line)
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assert match, _('expected revision number')
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e = logentry(rcs=scache(rcs), file=scache(filename),
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revision=tuple([int(x) for x in match.group(1).split('.')]),
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branches=[], parent=None,
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synthetic=False)
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state = 6
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elif state == 6:
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# expecting date, author, state, lines changed
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match = re_60.match(line)
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assert match, _('revision must be followed by date line')
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d = match.group(1)
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if d[2] == '/':
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# Y2K
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d = '19' + d
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if len(d.split()) != 3:
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# cvs log dates always in GMT
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d = d + ' UTC'
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e.date = util.parsedate(d, ['%y/%m/%d %H:%M:%S', '%Y/%m/%d %H:%M:%S', '%Y-%m-%d %H:%M:%S'])
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e.author = scache(match.group(2))
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e.dead = match.group(3).lower() == 'dead'
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if match.group(5):
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if match.group(6):
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e.lines = (int(match.group(5)), int(match.group(6)))
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else:
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e.lines = (int(match.group(5)), 0)
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elif match.group(6):
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e.lines = (0, int(match.group(6)))
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else:
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e.lines = None
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e.comment = []
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state = 7
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elif state == 7:
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# read the revision numbers of branches that start at this revision
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# or store the commit log message otherwise
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m = re_70.match(line)
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if m:
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e.branches = [tuple([int(y) for y in x.strip().split('.')])
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for x in m.group(1).split(';')]
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state = 8
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elif re_31.match(line) and re_50.match(peek):
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state = 5
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store = True
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elif re_32.match(line):
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state = 0
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store = True
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else:
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e.comment.append(line)
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elif state == 8:
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# store commit log message
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if re_31.match(line):
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state = 5
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store = True
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elif re_32.match(line):
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state = 0
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store = True
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else:
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e.comment.append(line)
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# When a file is added on a branch B1, CVS creates a synthetic
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# dead trunk revision 1.1 so that the branch has a root.
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# Likewise, if you merge such a file to a later branch B2 (one
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# that already existed when the file was added on B1), CVS
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# creates a synthetic dead revision 1.1.x.1 on B2. Don't drop
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# these revisions now, but mark them synthetic so
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# createchangeset() can take care of them.
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if (store and
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e.dead and
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e.revision[-1] == 1 and # 1.1 or 1.1.x.1
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len(e.comment) == 1 and
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file_added_re.match(e.comment[0])):
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ui.debug(_('found synthetic rev in %s: %r\n')
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% (e.rcs, e.comment[0]))
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e.synthetic = True
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if store:
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# clean up the results and save in the log.
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store = False
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e.tags = util.sort([scache(x) for x in tags.get(e.revision, [])])
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e.comment = scache('\n'.join(e.comment))
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revn = len(e.revision)
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if revn > 3 and (revn % 2) == 0:
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e.branch = tags.get(e.revision[:-1], [None])[0]
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else:
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e.branch = None
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log.append(e)
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if len(log) % 100 == 0:
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ui.status(util.ellipsis('%d %s' % (len(log), e.file), 80)+'\n')
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listsort(log, key=lambda x:(x.rcs, x.revision))
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# find parent revisions of individual files
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versions = {}
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for e in log:
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branch = e.revision[:-1]
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p = versions.get((e.rcs, branch), None)
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if p is None:
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p = e.revision[:-2]
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e.parent = p
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versions[(e.rcs, branch)] = e.revision
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# update the log cache
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if cache:
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if log:
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# join up the old and new logs
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listsort(log, key=lambda x:x.date)
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if oldlog and oldlog[-1].date >= log[0].date:
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raise logerror('Log cache overlaps with new log entries,'
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' re-run without cache.')
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log = oldlog + log
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# write the new cachefile
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ui.note(_('writing cvs log cache %s\n') % cachefile)
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pickle.dump(log, file(cachefile, 'w'))
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else:
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log = oldlog
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ui.status(_('%d log entries\n') % len(log))
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return log
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class changeset(object):
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'''Class changeset has the following attributes:
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.author - author name as CVS knows it
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.branch - name of branch this changeset is on, or None
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.comment - commit message
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.date - the commit date as a (time,tz) tuple
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.entries - list of logentry objects in this changeset
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.parents - list of one or two parent changesets
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.tags - list of tags on this changeset
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.synthetic - from synthetic revision "file ... added on branch ..."
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'''
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def __init__(self, **entries):
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self.__dict__.update(entries)
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def createchangeset(ui, log, fuzz=60, mergefrom=None, mergeto=None):
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'''Convert log into changesets.'''
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ui.status(_('creating changesets\n'))
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# Merge changesets
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listsort(log, key=lambda x:(x.comment, x.author, x.branch, x.date))
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changesets = []
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files = {}
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c = None
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for i, e in enumerate(log):
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# Check if log entry belongs to the current changeset or not.
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if not (c and
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e.comment == c.comment and
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e.author == c.author and
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e.branch == c.branch and
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((c.date[0] + c.date[1]) <=
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(e.date[0] + e.date[1]) <=
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(c.date[0] + c.date[1]) + fuzz) and
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e.file not in files):
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c = changeset(comment=e.comment, author=e.author,
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branch=e.branch, date=e.date, entries=[])
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changesets.append(c)
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files = {}
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if len(changesets) % 100 == 0:
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t = '%d %s' % (len(changesets), repr(e.comment)[1:-1])
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ui.status(util.ellipsis(t, 80) + '\n')
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c.entries.append(e)
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files[e.file] = True
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c.date = e.date # changeset date is date of latest commit in it
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# Mark synthetic changesets
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for c in changesets:
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# Synthetic revisions always get their own changeset, because
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# the log message includes the filename. E.g. if you add file3
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# and file4 on a branch, you get four log entries and three
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# changesets:
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# "File file3 was added on branch ..." (synthetic, 1 entry)
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# "File file4 was added on branch ..." (synthetic, 1 entry)
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# "Add file3 and file4 to fix ..." (real, 2 entries)
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# Hence the check for 1 entry here.
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c.synthetic = (len(c.entries) == 1 and c.entries[0].synthetic)
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# Sort files in each changeset
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for c in changesets:
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def pathcompare(l, r):
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'Mimic cvsps sorting order'
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l = l.split('/')
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r = r.split('/')
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nl = len(l)
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nr = len(r)
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n = min(nl, nr)
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for i in range(n):
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if i + 1 == nl and nl < nr:
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return -1
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elif i + 1 == nr and nl > nr:
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return +1
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elif l[i] < r[i]:
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return -1
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elif l[i] > r[i]:
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return +1
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return 0
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def entitycompare(l, r):
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return pathcompare(l.file, r.file)
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c.entries.sort(entitycompare)
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# Sort changesets by date
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def cscmp(l, r):
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d = sum(l.date) - sum(r.date)
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if d:
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return d
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# detect vendor branches and initial commits on a branch
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le = {}
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for e in l.entries:
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le[e.rcs] = e.revision
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re = {}
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for e in r.entries:
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re[e.rcs] = e.revision
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d = 0
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for e in l.entries:
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if re.get(e.rcs, None) == e.parent:
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assert not d
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d = 1
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break
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for e in r.entries:
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if le.get(e.rcs, None) == e.parent:
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assert not d
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d = -1
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break
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return d
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changesets.sort(cscmp)
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# Collect tags
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globaltags = {}
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for c in changesets:
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tags = {}
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for e in c.entries:
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for tag in e.tags:
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# remember which is the latest changeset to have this tag
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globaltags[tag] = c
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for c in changesets:
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tags = {}
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for e in c.entries:
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for tag in e.tags:
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tags[tag] = True
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# remember tags only if this is the latest changeset to have it
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c.tags = util.sort([tag for tag in tags if globaltags[tag] is c])
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# Find parent changesets, handle {{mergetobranch BRANCHNAME}}
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# by inserting dummy changesets with two parents, and handle
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# {{mergefrombranch BRANCHNAME}} by setting two parents.
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if mergeto is None:
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mergeto = r'{{mergetobranch ([-\w]+)}}'
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if mergeto:
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mergeto = re.compile(mergeto)
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if mergefrom is None:
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mergefrom = r'{{mergefrombranch ([-\w]+)}}'
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if mergefrom:
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mergefrom = re.compile(mergefrom)
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versions = {} # changeset index where we saw any particular file version
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branches = {} # changeset index where we saw a branch
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n = len(changesets)
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i = 0
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while i<n:
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c = changesets[i]
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for f in c.entries:
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versions[(f.rcs, f.revision)] = i
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p = None
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if c.branch in branches:
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p = branches[c.branch]
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else:
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for f in c.entries:
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p = max(p, versions.get((f.rcs, f.parent), None))
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c.parents = []
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if p is not None:
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p = changesets[p]
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# Ensure no changeset has a synthetic changeset as a parent.
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while p.synthetic:
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assert len(p.parents) <= 1, \
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_('synthetic changeset cannot have multiple parents')
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if p.parents:
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p = p.parents[0]
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else:
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p = None
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break
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if p is not None:
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c.parents.append(p)
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if mergefrom:
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m = mergefrom.search(c.comment)
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if m:
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m = m.group(1)
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if m == 'HEAD':
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m = None
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if m in branches and c.branch != m:
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c.parents.append(changesets[branches[m]])
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if mergeto:
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m = mergeto.search(c.comment)
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if m:
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try:
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m = m.group(1)
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if m == 'HEAD':
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m = None
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except:
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m = None # if no group found then merge to HEAD
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if m in branches and c.branch != m:
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# insert empty changeset for merge
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cc = changeset(author=c.author, branch=m, date=c.date,
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comment='convert-repo: CVS merge from branch %s' % c.branch,
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entries=[], tags=[], parents=[changesets[branches[m]], c])
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changesets.insert(i + 1, cc)
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branches[m] = i + 1
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# adjust our loop counters now we have inserted a new entry
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n += 1
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i += 2
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continue
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branches[c.branch] = i
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i += 1
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# Drop synthetic changesets (safe now that we have ensured no other
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# changesets can have them as parents).
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i = 0
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while i < len(changesets):
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if changesets[i].synthetic:
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del changesets[i]
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else:
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i += 1
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# Number changesets
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for i, c in enumerate(changesets):
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c.id = i + 1
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ui.status(_('%d changeset entries\n') % len(changesets))
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return changesets
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def debugcvsps(ui, *args, **opts):
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'''Read CVS rlog for current directory or named path in repository, and
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convert the log to changesets based on matching commit log entries and dates.'''
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if opts["new_cache"]:
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cache = "write"
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elif opts["update_cache"]:
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cache = "update"
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else:
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cache = None
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revisions = opts["revisions"]
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try:
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if args:
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log = []
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for d in args:
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log += createlog(ui, d, root=opts["root"], cache=cache)
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else:
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log = createlog(ui, root=opts["root"], cache=cache)
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except logerror, e:
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ui.write("%r\n"%e)
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return
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changesets = createchangeset(ui, log, opts["fuzz"])
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del log
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# Print changesets (optionally filtered)
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off = len(revisions)
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branches = {} # latest version number in each branch
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ancestors = {} # parent branch
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for cs in changesets:
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if opts["ancestors"]:
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if cs.branch not in branches and cs.parents and cs.parents[0].id:
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ancestors[cs.branch] = changesets[cs.parents[0].id-1].branch, cs.parents[0].id
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branches[cs.branch] = cs.id
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# limit by branches
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if opts["branches"] and (cs.branch or 'HEAD') not in opts["branches"]:
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continue
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if not off:
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# Note: trailing spaces on several lines here are needed to have
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# bug-for-bug compatibility with cvsps.
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ui.write('---------------------\n')
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ui.write('PatchSet %d \n' % cs.id)
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ui.write('Date: %s\n' % util.datestr(cs.date, '%Y/%m/%d %H:%M:%S %1%2'))
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ui.write('Author: %s\n' % cs.author)
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ui.write('Branch: %s\n' % (cs.branch or 'HEAD'))
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ui.write('Tag%s: %s \n' % (['', 's'][len(cs.tags)>1],
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','.join(cs.tags) or '(none)'))
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if opts["parents"] and cs.parents:
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if len(cs.parents)>1:
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ui.write('Parents: %s\n' % (','.join([str(p.id) for p in cs.parents])))
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else:
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ui.write('Parent: %d\n' % cs.parents[0].id)
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if opts["ancestors"]:
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b = cs.branch
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r = []
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while b:
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b, c = ancestors[b]
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r.append('%s:%d:%d' % (b or "HEAD", c, branches[b]))
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if r:
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ui.write('Ancestors: %s\n' % (','.join(r)))
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ui.write('Log:\n')
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ui.write('%s\n\n' % cs.comment)
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ui.write('Members: \n')
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for f in cs.entries:
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fn = f.file
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if fn.startswith(opts["prefix"]):
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fn = fn[len(opts["prefix"]):]
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ui.write('\t%s:%s->%s%s \n' % (fn, '.'.join([str(x) for x in f.parent]) or 'INITIAL',
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'.'.join([str(x) for x in f.revision]), ['', '(DEAD)'][f.dead]))
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ui.write('\n')
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# have we seen the start tag?
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if revisions and off:
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if revisions[0] == str(cs.id) or \
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revisions[0] in cs.tags:
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off = False
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# see if we reached the end tag
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if len(revisions)>1 and not off:
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if revisions[1] == str(cs.id) or \
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revisions[1] in cs.tags:
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break
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