#!/usr/bin/env python

#

# Commandline front-end for cvsps.py

#

# Copyright 2008, Frank Kingswood <frank@kingswood-consulting.co.uk>

#

# This software may be used and distributed according to the terms

# of the GNU General Public License, incorporated herein by reference.

import sys

from mercurial import util

from mercurial.i18n import _

from optparse import OptionParser, SUPPRESS_HELP

from hgext.convert.cvsps import createlog, createchangeset, logerror

def main():

    '''Main program to mimic cvsps.'''

    op = OptionParser(usage='%prog [-bpruvxz] path',

                      description='Read CVS rlog for current directory or named '

                                  'path in repository, and convert the log to changesets '

                                  'based on matching commit log entries and dates.')

    # Options that are ignored for compatibility with cvsps-2.1

    op.add_option('-A', dest='Ignore', action='store_true', help=SUPPRESS_HELP)

    op.add_option('--cvs-direct', dest='Ignore', action='store_true', help=SUPPRESS_HELP)

    op.add_option('-q', dest='Ignore', action='store_true', help=SUPPRESS_HELP)

    # Main options shared with cvsps-2.1

    op.add_option('-b', dest='Branches', action='append', default=[],

                  help='Only return changes on specified branches')

    op.add_option('-p', dest='Prefix', action='store', default='',

                  help='Prefix to remove from file names')

    op.add_option('-r', dest='Revisions', action='append', default=[],

                  help='Only return changes after or between specified tags')

    op.add_option('-u', dest='Cache', action='store_const', const='update',

                  help="Update cvs log cache")

    op.add_option('-v', dest='Verbose', action='count', default=0,

                  help='Be verbose')

    op.add_option('-x', dest='Cache', action='store_const', const='write',

                  help="Create new cvs log cache")

    op.add_option('-z', dest='Fuzz', action='store', type='int', default=60,

                  help='Set commit time fuzz', metavar='seconds')

    op.add_option('--root', dest='Root', action='store', default='',

                  help='Specify cvsroot', metavar='cvsroot')

    # Options specific to this version

    op.add_option('--parents', dest='Parents', action='store_true',

                  help='Show parent changesets')

    op.add_option('--ancestors', dest='Ancestors', action='store_true',

                  help='Show current changeset in ancestor branches')

    options, args = op.parse_args()

    # Create a ui object for printing progress messages

    class UI:

        def __init__(self, verbose):

            if verbose:

                self.status = self.message

            if verbose>1:

                self.note = self.message

            if verbose>2:

                self.debug = self.message

        def message(self, msg):

            sys.stderr.write(msg)

        def nomessage(self, msg):

            pass

        status = nomessage

        note = nomessage

        debug = nomessage

    ui = UI(options.Verbose)

    try:

        if args:

            log = []

            for d in args:

                log += createlog(ui, d, root=options.Root, cache=options.Cache)

        else:

            log = createlog(ui, root=options.Root, cache=options.Cache)

    except logerror, e:

        print e

        return

    changesets = createchangeset(ui, log, options.Fuzz)

    del log

    # Print changesets (optionally filtered)

    off = len(options.Revisions)

    branches = {}    # latest version number in each branch

    ancestors = {}   # parent branch

    for cs in changesets:

        if options.Ancestors:

            if cs.branch not in branches and cs.parents and cs.parents[0].id:

                ancestors[cs.branch] = changesets[cs.parents[0].id-1].branch, cs.parents[0].id

            branches[cs.branch] = cs.id

        # limit by branches

        if options.Branches and (cs.branch or 'HEAD') not in options.Branches:

            continue

        if not off:

            # Note: trailing spaces on several lines here are needed to have

            #       bug-for-bug compatibility with cvsps.

            print '---------------------'

            print 'PatchSet %d ' % cs.id

            print 'Date: %s' % util.datestr(cs.date, '%Y/%m/%d %H:%M:%S %1%2')

            print 'Author: %s' % cs.author

            print 'Branch: %s' % (cs.branch or 'HEAD')

            print 'Tag%s: %s ' % (['', 's'][len(cs.tags)>1],

                                  ','.join(cs.tags) or '(none)')

            if options.Parents and cs.parents:

                if len(cs.parents)>1:

                    print 'Parents: %s' % (','.join([str(p.id) for p in cs.parents]))

                else:

                    print 'Parent: %d' % cs.parents[0].id

            if options.Ancestors:

                b = cs.branch

                r = []

                while b:

                    b, c = ancestors[b]

                    r.append('%s:%d:%d' % (b or "HEAD", c, branches[b]))

                if r:

                    print 'Ancestors: %s' % (','.join(r))

            print 'Log:'

            print cs.comment

            print

            print 'Members: '

            for f in cs.entries:

                fn = f.file

                if fn.startswith(options.Prefix):

                    fn = fn[len(options.Prefix):]

                print '\t%s:%s->%s%s ' % (fn, '.'.join([str(x) for x in f.parent]) or 'INITIAL',

                                          '.'.join([str(x) for x in f.revision]), ['', '(DEAD)'][f.dead])

            print

        # have we seen the start tag?

        if options.Revisions and off:

            if options.Revisions[0] == str(cs.id) or \

                options.Revisions[0] in cs.tags:

                off = False

        # see if we reached the end tag

        if len(options.Revisions)>1 and not off:

            if options.Revisions[1] == str(cs.id) or \

                options.Revisions[1] in cs.tags:

                break

if __name__ == '__main__':

    main()