#!/usr/bin/python3

# -*- coding:utf-8 -*-

#

# Copyright (C) 2015 Daniel Vrátil <dvratil@redhat.com>

# Copyright (C) 2017 Daniel Vrátil <dvratil@fedoraproject.org>

#

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU Library General Public License as

# published by the Free Software Foundation; either version 2 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 Library General Public

# License along with this program; if not, write to the

# Free Software Foundation, Inc.,

# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

#

import sys

import re

import glob

class CMakeParser:

    def __init__(self, filelist = None):

        if filelist == None:

            filelist = sys.stdin

        paths = map(lambda x: x.rstrip(), filelist.readlines())

        for path in paths:

            modulePath, cmakeModule, lowercase = self.parseCmakeModuleConfig(path)

            if modulePath and cmakeModule:

                version = self.resolveCMakeModuleVersion(modulePath, cmakeModule, lowercase)

                if version:

                    string = "cmake(" + cmakeModule + ") = " + version

                else:

                    string = "cmake(" + cmakeModule + ")"

                if string == string.lower():

                    print(string)

                else:

                    # Temporarily print both variants to satisfy requires

                    # by the old version of this generator which made mistakes

                    print(string)

                    print(string.lower())

    def parseCmakeModuleConfig(self, configFile):

        paths = configFile.rsplit("/", 3)

        modulePath = "%s/cmake/%s" % (paths[0], paths[2])

        cfgFile = paths[3]

        if cfgFile.endswith("Config.cmake"):

           return (modulePath, cfgFile[0:-len("Config.cmake")], False)

        elif cfgFile.endswith("-config.cmake"):

           return (modulePath, cfgFile[0:-len("-config.cmake")], True)

        else:

            return (None, None, False)

    def resolveCMakeModuleVersion(self, modulePath, cmakeModule, lowercase):

        versionFile = ("%s/%s-config-version.cmake" if lowercase else "%s/%sConfigVersion.cmake") % (modulePath, cmakeModule)

        try:

            f = open(versionFile, 'r')

        except:

            return None

        for line in f:

            line = line.strip()

            # set(PACKAGE_VERSION <version>)

            version = re.match(r"^set[\ ]*\([\ ]*PACKAGE_VERSION[\ ]+[\"]*([0-9\.]+)[\"]*[\ ]*[.]*\)", line)

            if version:

                return version.groups(1)[0]

        return None

if __name__ == "__main__":

    parser = CMakeParser()