svg.py

# This program tries to parse distrowatch and create a svg graph simliar to: <https://en.wikipedia.org/wiki/Linux_distribution#/media/File:Linux_Distribution_Timeline_with_Android.svg>
# Copyright (C) 2016 Jappe Klooster

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program.If not, see <http://www.gnu.org/licenses/>.

"""
This file flattens the graph back into a csv structure
""" 

def csv(name,parent,start,stop,icon,description):
    import random
    r = lambda: random.randint(0,255)
    color = '#%02X%02X%02X' % (r(),r(),r())
    return "\"N\",\"%s\",\"%s\",\"%s\",\"%s\",\"%s\",\"%s\",\"%s\"\n" % (
        name,color,parent,start,stop,icon,description
    )

def toCSV(distributions, parent):
    def sortDates(datearray):
        return list(
            sorted(
                map(
                    lambda x: datetime.strptime(x,"%Y-%m-%d"),
                    datearray
                )
            )
        )
    from datetime import datetime, MAXYEAR
    lowestStartdate = datetime(MAXYEAR,1,1)
    result = ""
    for distro in distributions:
        import strings
        dates = sortDates(distro[strings.dates])
        enddate = ""
        dateformat = "%Y.%m.%d"
        if not distro[strings.status] == strings.active:
            enddate = dates[-1].strftime(dateformat)

        retuple = toCSV(distro[strings.children],distro[strings.name])
        startdate = dates[0]
        if retuple.lowestStartdate < startdate:
            startdate = retuple.lowestStartdate
        if startdate < lowestStartdate:
            lowestStartdate = startdate
        result += retuple.result +csv(
            distro[strings.name],
            parent,
            startdate.strftime(dateformat),
            enddate,
            distro[strings.image] if len(distro[strings.children]) > 1 else ""
            ,""
        )
    from collections import namedtuple
    retuple = namedtuple('Retuple', ['result', 'lowestStartdate'])
    return retuple(result, lowestStartdate)