diff --git a/get_license/check_license.py b/get_license/check_license.py
new file mode 100644
index 0000000000000000000000000000000000000000..49d9880a1cb58d13c75d255308ac0afbf6d42e57
--- /dev/null
+++ b/get_license/check_license.py
@@ -0,0 +1,274 @@
+#! /usr/bin/env python
+# coding=utf-8
+# ******************************************************************************
+# Copyright (c) Huawei Technologies Co., Ltd. 2020-2020. All rights reserved.
+# licensed under the Mulan PSL v2.
+# You can use this software according to the terms and conditions of the Mulan PSL v2.
+# You may obtain a copy of Mulan PSL v2 at:
+#     http://license.coscl.org.cn/MulanPSL2
+# THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
+# PURPOSE.
+# See the Mulan PSL v2 for more details.
+# Author:
+# Create: 2020-10-13
+# ******************************************************************************/
+"""
+check license for source package
+"""
+import os
+import re
+import chardet
+import argparse
+import yaml
+
+from get_license.spec import Spec, replace_macros
+import logging
+
+log_check = logging.getLogger()
+
+
+class PkgLicense(object):
+    """
+    解析获取软件包中源码、spec中的license
+    进行白名单校验、一致性检查
+    """
+
+    LICENSE_FILE_TARGET = ["apache-2.0",
+                           "artistic",
+                           "artistic.txt",
+                           "libcurllicense",
+                           "gpl.txt",
+                           "gpl2.txt",
+                           "gplv2.txt",
+                           "lgpl.txt",
+                           "notice",
+                           "about_bsd.txt",
+                           "mit",
+                           "pom.xml",
+                           "meta.yml",
+                           "pkg-info"]
+
+    LICENSE_TARGET_PAT = re.compile(
+            r"^(copying)|(copyright)|(copyrights)|(licenses)|(licen[cs]e)(\.(txt|xml))?$")
+
+    def __init__(self):
+        self.license_list = {}
+        self.full_name_map = {}
+
+    @staticmethod
+    def load_licenses_config(filename):
+        white_black_list = {}
+        translations = {}
+        if not os.path.exists(filename):
+            log_check.warning("not found License config: %s", filename)
+            return white_black_list, translations
+        data = {}
+        with open(filename, "r") as f:
+            try:
+                data = yaml.safe_load(f)
+            except yaml.YAMLError as e:
+                log_check.exception("yaml load error: %s", str(e))
+                return white_black_list, translations
+        PkgLicense.parse_tag_license(data["Software Licenses"]["Bad Licenses"], 
+                                    "black", 
+                                    white_black_list, 
+                                    translations)
+        PkgLicense.parse_tag_license(data["Software Licenses"]["Good Licenses"], 
+                                    "white", 
+                                    white_black_list, 
+                                    translations)
+        PkgLicense.parse_tag_license(data["Software Licenses"]["Need Review Licenses"], 
+                                    "need review", 
+                                    white_black_list, 
+                                    translations)
+        return white_black_list, translations
+
+    @staticmethod
+    def parse_tag_license(licenses, tag, white_black_list, translations):
+        for lic in licenses:
+            if lic["identifier"] not in white_black_list:
+                white_black_list[lic["identifier"]] = tag
+            for oname in lic["alias"]:
+                if oname not in translations:
+                    translations[oname] = lic["identifier"]
+
+    @staticmethod
+    def check_license_safe(licenses, license_list):
+        """  
+        Check if the license is in the blacklist.
+        """
+        result = True
+        for lic in licenses:
+            res = license_list.get(lic, "need review")
+            if res == "white":
+                pass
+            elif res == "black":
+                log_check.error("This license: %s is not safe", lic)
+                result = False
+            else:
+                log_check.warning("This license: %s need to be review", lic)
+                result = False
+        return result
+
+    # 以下为从spec文件中获取license
+    @staticmethod
+    def scan_licenses_in_spec(specfile, license_translations):
+        """
+        Find spec file and scan. If no spec file
+        or open file failed, the program will exit with an error.
+        """
+        if not specfile:
+            return []
+        s_spec = Spec.from_file(specfile)
+        licenses = replace_macros(s_spec.license, s_spec)
+        licenses_in_spec = set()
+
+        words = PkgLicense.split_license(licenses)
+        for word in words:
+            licenses_in_spec.add(word)
+        result = PkgLicense._translate_license(licenses_in_spec, license_translations)
+        if not licenses_in_spec:
+            log_check.warning("full license in spec is empty")
+        else:
+            log_check.info("full license in spec: %s", ", ".join(list(licenses_in_spec)))
+        if not license_translations:
+            log_check.warning("real license in spec is empty")
+        else:
+            log_check.info("real license in spec: %s", ", ".join(result))
+        return result
+
+    @staticmethod
+    def split_license(licenses):
+        """
+        分割spec license字段的license
+        """
+        license_set = re.split(r'\(|\)|\,|\W+[Aa][Nn][Dd]\W+|\s+-or-\s+|\s+[oO][rR]\s+|\s+/\s+', licenses)
+        for index in range(len(license_set)): # 去除字符串首尾空格
+            license_set[index] = license_set[index].strip()
+        return set(filter(None, license_set)) # 去除list中空字符串
+
+    # 以下为从license文件中获取license
+    @staticmethod
+    def scan_licenses_in_source(srcdir, license_translations, head=True):
+        """
+        Find LICENSE files and scan.
+        """
+        full_license_in_file = set()
+        if not os.path.exists(srcdir):
+            log_check.error("%s not exist.", srcdir)
+            return full_license_in_file
+        with os.scandir(srcdir) as dir_iter:
+            for entry in dir_iter:
+                if not entry.name.startswith('.'):
+                    file_name = entry.name
+                    if os.path.islink(os.path.join(srcdir, file_name)):
+                        continue
+                    # print("now file: {}".format(file_name))
+                    if entry.is_file():
+                        if file_name.lower() in PkgLicense.LICENSE_FILE_TARGET \
+                                or PkgLicense.LICENSE_TARGET_PAT.search(file_name.lower()):
+                            # print("scan the license target file: {}".format(file_name))
+                            log_check.info("scan the license target file: %s", file_name)
+                            full_license_in_file.update(
+                                PkgLicense.scan_licenses(
+                                    os.path.join(srcdir, file_name),
+                                    license_translations))
+                    else:
+                        full_license_in_file.update(
+                                    PkgLicense.scan_licenses_in_source(
+                                        os.path.join(srcdir, file_name),
+                                        license_translations,
+                                        False))
+        result = full_license_in_file
+        if head:
+            log_check.info("full license in files: %s", ", ".join(list(full_license_in_file)))
+            result = PkgLicense._translate_license(full_license_in_file, license_translations)
+            log_check.info("real license in files: %s", ", ".join(result))
+        return result
+
+    @staticmethod
+    def scan_licenses(copying, license_translations):
+        """
+        Scan licenses from copying file and add to licenses_for_source_files.
+        if get contents failed or decode data failed, return nothing.
+        """
+        licenses_in_file = set()
+        log_check.info("%d", len(license_translations))
+        for word in license_translations:
+            if word in copying:
+                licenses_in_file.add(word)
+                log_check.info("get license({}) from file({})".format(word, copying))
+        try:
+            with open(copying, "rb") as file_handler:
+                data = file_handler.read()
+        except FileNotFoundError:
+            return licenses_in_file
+        data = PkgLicense._auto_decode_data(data)
+        if not data:
+            return licenses_in_file
+        content = ' '.join(str(data).split())
+        for word in license_translations:
+            try:
+                if word in content:
+                    pattern_str = r'(^{word}$)|(^{word}(\W+).*)|(.*(\W+){word}$)|(.*(\W+){word}(\W+).*)' \
+                                  .format(word=word)
+                    if re.match(r'' + pattern_str + '', content):
+                        licenses_in_file.add(word)
+                        print("get license({}) from file({})".format(word, copying))
+                        log_check.info("get license({}) from file({})".format(word, copying))
+            except UnicodeDecodeError as e:
+                log_check.exception("decode error: %s", str(e))
+        return licenses_in_file
+
+    @staticmethod
+    def _decode_data(data, charset):
+        """
+        Decode the license string. return the license string or nothing.
+        """
+        if not charset:
+            return ""
+        try:
+            return data.decode(charset)
+        except UnicodeDecodeError as ue:
+            log_check.exception("auto decode data error %s", str(ue))
+            return ""
+
+    @staticmethod
+    def _auto_decode_data(data):
+        return PkgLicense._decode_data(data, chardet.detect(data)['encoding'])
+
+    @staticmethod
+    def _translate_license(data, license_translations):
+        result = set()
+        for e in data:
+            print("origin:{} after:{}".format(e, license_translations.get(e, e)))
+            result.add(license_translations.get(e, e))
+        return list(result)
+
+    @staticmethod
+    def check_licenses_is_same(licenses_for_spec, licenses_for_source_files):
+        """
+        Check if the licenses from SPEC is the same as the licenses from LICENSE file.
+        if license in spec contains license in srcs, return True. if not same return False.
+        """
+        return set(licenses_for_source_files) <= set(licenses_for_spec)
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument("-l", "--cvelist", default="",
+                        help="path of cve pkgs")
+    # input of new repo name
+    parser.add_argument("-o", "--old_repos", type=str, nargs='*', required=True,
+                        help="repo list of old repo")
+    parser.add_argument("-n", "--new_repos", type=str, nargs='*', required=True,
+                        help="repo list of new repo")
+
+    parser.add_argument("-s", "--savedir", default="/tmp/update-package/pkg_rpm",
+                        help="dir of download dir")
+    parser.add_argument("-d", "--downloaddir", default="/tmp/update-package/download",
+                        help="dir of require download dir")
+    parser.add_argument("--skip_cve_list", action="store_true", default=False,
+                        help="skip download pkg in cve list")
+    args = parser.parse_args()
\ No newline at end of file
diff --git a/get_license/config/Licenses.yaml b/get_license/config/Licenses.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..48ea42c4cdaceaf40abc714cafd87c2f7df7f1a0
--- /dev/null
+++ b/get_license/config/Licenses.yaml
@@ -0,0 +1,1546 @@
+Software Licenses:
+  Bad Licenses:
+  - alias:
+    - Abstyles License
+    - APREAMBL.TEX, version 1.10e
+    identifier: Abstyles
+  - alias:
+    - Adobe Systems Incorporated Source Code License Agreement
+    - Adobe Systems Incorporated(r) Source Code License Agreement
+    identifier: Adobe-2006
+  - alias:
+    - Adobe Glyph List License
+    - Copyright (c) 1997,1998,2002,2007 Adobe Systems Incorporated
+    identifier: Adobe-Glyph
+  - alias:
+    - Amazon Digital Services License
+    - Amazon Digital Services, Inc. or its affiliates
+    identifier: ADSL
+  - alias:
+    - Affero General Public License v1.0 only
+    - AFFERO GENERAL PUBLIC LICENSE Version 1
+    identifier: AGPL-1.0-only
+  - alias:
+    - Affero General Public License v1.0 or later
+    - AFFERO GENERAL PUBLIC LICENSE Version 1
+    identifier: AGPL-1.0-or-later
+  - alias:
+    - Aladdin Free Public License
+    identifier: Aladdin
+  - alias:
+    - AMD's plpa_map.c License
+    - Copyright (c) 2006, 2007 Advanced Micro Devices, Inc.
+    identifier: AMDPLPA
+  - alias:
+    - Apple MIT License
+    - Copyright (c) 2006 by Apple Computer, Inc.
+    identifier: AML
+  - alias:
+    - Academy of Motion Picture Arts and Sciences BSD
+    - A.M.P.A.S.
+    identifier: AMPAS
+  - alias:
+    - ANTLR Software Rights Notice
+    - ANTLR 2 License
+    identifier: ANTLR-PD
+  - alias:
+    - Bahyph License
+    - Copyright (c) GMV 1991
+    identifier: Bahyph
+  - alias:
+    - Barr License
+    - Michael Barr
+    identifier: Barr
+  - alias:
+    - Beerware License
+    - THE BEER-WARE LICENSE
+    identifier: Beerware
+  - alias:
+    - BitTorrent Open Source License v1.0
+    - BitTorrent Open Source License Version 1.0
+    identifier: BitTorrent-1.0
+  - alias:
+    - SQLite Blessing
+    - here is a blessing
+    identifier: blessing
+  - alias:
+    - Blue Oak Model License 1.0.0
+    - "http://blueoakcouncil.org/license/1.0.0"
+    identifier: BlueOak-1.0.0
+  - alias:
+    - Borceux license
+    - Copyright 1993 Francis Borceux
+    identifier: Borceux
+  - alias:
+    - BSD 3-Clause No Nuclear License
+    - Copyright 1994-2009 Sun Microsystems, Inc.
+    identifier: BSD-3-Clause-No-Nuclear-License
+  - alias:
+    - BSD 3-Clause No Nuclear License 2014
+    - Copyright © 2008, 2014 Oracle and/or its affiliates
+    identifier: BSD-3-Clause-No-Nuclear-License-2014
+  - alias:
+    - BSD 3-Clause No Nuclear Warranty
+    - Copyright (c) 2003-2005 Sun Microsystems, Inc.
+    identifier: BSD-3-Clause-No-Nuclear-Warranty
+  - alias:
+    - BSD 3-Clause Open MPI variant
+    identifier: BSD-3-Clause-Open-MPI
+  - alias:
+    - BSD-4-Clause (University of California-Specific)
+    identifier: BSD-4-Clause-UC
+  - alias:
+    - BSD Source Code Attribution
+    - Copyright (c) 2011, Deusty, LLC
+    identifier: BSD-Source-Code
+  - alias:
+    - bzip2 and libbzip2 License v1.0.5
+    - bzip2/libbzip2 version 1.0.5
+    identifier: bzip2-1.0.5
+  - alias:
+    - bzip2 and libbzip2 License v1.0.6
+    - bzip2/libbzip2 version 1.0.6
+    identifier: bzip2-1.0.6
+  - alias:
+    - Caldera License
+    - Caldera International, Inc.
+    identifier: Caldera
+  - alias:
+    - Creative Commons Attribution 2.0 Generic
+    - Creative Commons Attribution 2.0
+    identifier: CC-BY-2.0
+  - alias:
+    - Creative Commons Attribution 2.5 Generic
+    - Creative Commons Attribution 2.0
+    identifier: CC-BY-2.5
+  - alias:
+    - Creative Commons Attribution Non Commercial 1.0 Generic
+    - Creative Commons Attribution-NonCommercial 1.0
+    identifier: CC-BY-NC-1.0
+  - alias:
+    - Creative Commons Attribution Non Commercial 2.0 Generic
+    - Creative Commons Attribution-NonCommercial 2.0
+    identifier: CC-BY-NC-2.0
+  - alias:
+    - Creative Commons Attribution Non Commercial 2.5 Generic
+    - Creative Commons Attribution-NonCommercial 2.5
+    identifier: CC-BY-NC-2.5
+  - alias:
+    - Creative Commons Attribution Non Commercial 3.0 Unported
+    - Creative Commons Attribution-NonCommercial 3.0
+    identifier: CC-BY-NC-3.0
+  - alias:
+    - Creative Commons Attribution Non Commercial 4.0 International
+    - Creative Commons Attribution-NonCommercial 4.0
+    identifier: CC-BY-NC-4.0
+  - alias:
+    - Creative Commons Attribution Non Commercial No Derivatives 1.0 Generic
+    - Creative Commons Attribution-NoDerivs-NonCommercial 1.0
+    identifier: CC-BY-NC-ND-1.0
+  - alias:
+    - Creative Commons Attribution Non Commercial No Derivatives 2.0 Generic
+    - Creative Commons Attribution-NonCommercial-NoDerivs 2.0
+    identifier: CC-BY-NC-ND-2.0
+  - alias:
+    - Creative Commons Attribution Non Commercial No Derivatives 2.5 Generic
+    - Creative Commons Attribution-NonCommercial-NoDerivs 2.5
+    identifier: CC-BY-NC-ND-2.5
+  - alias:
+    - Creative Commons Attribution Non Commercial No Derivatives 3.0 Unported
+    - Creative Commons Attribution-NonCommercial-NoDerivs 3.0
+    identifier: CC-BY-NC-ND-3.0
+  - alias:
+    - Creative Commons Attribution Non Commercial No Derivatives 4.0 International
+    - Creative Commons Attribution-NonCommercial-NoDerivatives 4.0
+    identifier: CC-BY-NC-ND-4.0
+  - alias:
+    - Creative Commons Attribution Non Commercial Share Alike 1.0 Generic
+    - Creative Commons Attribution-NonCommercial-ShareAlike 1.0
+    identifier: CC-BY-NC-SA-1.0
+  - alias:
+    - Creative Commons Attribution Non Commercial Share Alike 2.0 Generic
+    - Creative Commons Attribution-NonCommercial-ShareAlike 2.0
+    identifier: CC-BY-NC-SA-2.0
+  - alias:
+    - Creative Commons Attribution Non Commercial Share Alike 2.5 Generic
+    - Creative Commons Attribution-NonCommercial-ShareAlike 2.5
+    identifier: CC-BY-NC-SA-2.5
+  - alias:
+    - Creative Commons Attribution Non Commercial Share Alike 3.0 Unported
+    - Creative Commons Attribution-NonCommercial-ShareAlike 3.0
+    identifier: CC-BY-NC-SA-3.0
+  - alias:
+    - Creative Commons Attribution Non Commercial Share Alike 4.0 International
+    - Creative Commons Attribution-NonCommercial-ShareAlike 4.0
+    identifier: CC-BY-NC-SA-4.0
+  - alias:
+    - Creative Commons Attribution No Derivatives 1.0 Generic
+    - Creative Commons Attribution-NoDerivs 1.0
+    identifier: CC-BY-ND-1.0
+  - alias:
+    - Creative Commons Attribution No Derivatives 2.0 Generic
+    - Creative Commons Attribution-NoDerivs 2.0
+    identifier: CC-BY-ND-2.0
+  - alias:
+    - Creative Commons Attribution No Derivatives 2.5 Generic
+    - Creative Commons Attribution-NoDerivs 2.5
+    identifier: CC-BY-ND-2.5
+  - alias:
+    - Creative Commons Attribution No Derivatives 3.0 Unported
+    - Creative Commons Attribution-NoDerivs 3.0
+    identifier: CC-BY-ND-3.0
+  - alias:
+    - Creative Commons Attribution No Derivatives 4.0 International
+    - Creative Commons Attribution-NoDerivatives 4.0
+    identifier: CC-BY-ND-4.0
+  - alias:
+    - Creative Commons Attribution Share Alike 2.0 Generic
+    - Creative Commons Attribution-ShareAlike 2.0
+    identifier: CC-BY-SA-2.0
+  - alias:
+    - Creative Commons Attribution Share Alike 2.5 Generic
+    - Creative Commons Attribution-ShareAlike 2.5
+    identifier: CC-BY-SA-2.5
+  - alias:
+    - Creative Commons Public Domain Dedication and Certification
+    identifier: CC-PDDC
+  - alias:
+    - Community Data License Agreement Permissive 1.0
+    - Community Data License Agreement - Permissive, Version 1.0
+    identifier: CDLA-Permissive-1.0
+  - alias:
+    - Community Data License Agreement Sharing 1.0
+    - Community Data License Agreement - Sharing, Version 1.0
+    identifier: CDLA-Sharing-1.0
+  - alias:
+    - CeCILL Free Software License Agreement v1.0
+    - CONTRAT DE LICENCE DE LOGICIEL LIBRE CeCILL
+    identifier: CECILL-1.0
+  - alias:
+    - CeCILL Free Software License Agreement v1.1
+    - FREE SOFTWARE LICENSING AGREEMENT CeCILL
+    identifier: CECILL-1.1
+  - alias:
+    - CERN Open Hardware Licence v1.1
+    - CERN OHL v1.1
+    identifier: CERN-OHL-1.1
+  - alias:
+    - CERN Open Hardware Licence v1.2
+    - CERN OHL v1.2
+    identifier: CERN-OHL-1.2
+  - alias:
+    - CERN Open Hardware Licence Version 2 - Permissive
+    identifier: CERN-OHL-P-2.0
+  - alias:
+    - CERN Open Hardware Licence Version 2 - Strongly Reciprocal
+    identifier: CERN-OHL-S-2.0
+  - alias:
+    - CERN Open Hardware Licence Version 2 - Weakly Reciprocal
+    identifier: CERN-OHL-W-2.0
+  - alias:
+    - CNRI Jython License
+    - JPython or CNRI
+    identifier: CNRI-Jython
+  - alias:
+    - CNRI Python Open Source GPL Compatible License Agreement
+    - CNRI OPEN SOURCE GPL-COMPATIBLE LICENSE AGREEMENT
+    identifier: CNRI-Python-GPL-Compatible
+  - alias:
+    - copyleft-next 0.3.0
+    identifier: copyleft-next-0.3.0
+  - alias:
+    - copyleft-next 0.3.1
+    identifier: copyleft-next-0.3.1
+  - alias:
+    - Code Project Open License 1.02
+    - Code Project Open License (CPOL) 1.02
+    identifier: CPOL-1.02
+  - alias:
+    - Crossword License
+    - cwpuzzle.dtx
+    identifier: Crossword
+  - alias:
+    - CrystalStacker License
+    - Crystal Stacker
+    identifier: CrystalStacker
+  - alias:
+    - Cube License
+    - Cube game engine source code
+    identifier: Cube
+  - alias:
+    - curl License
+    - Copyright (c) 1996 - 2021, Daniel Stenberg
+    identifier: curl
+  - alias:
+    - Deutsche Freie Software Lizenz
+    identifier: D-FSL-1.0
+  - alias:
+    - diffmark license
+    - 1. you can do what you want with it 2. I refuse any responsibility for the consequences
+    identifier: diffmark
+  - alias:
+    - DOC License
+    - DOC software
+    identifier: DOC
+  - alias:
+    - Dotseqn License
+    - Copyright (C) 1995 by Donald Arseneau
+    identifier: Dotseqn
+  - alias:
+    - DSDP License
+    - owned by The United States Government, and operated by the University of Chicago
+    identifier: DSDP
+  - alias:
+    - dvipdfm License
+    - should be distributed with a *different* name
+    identifier: dvipdfm
+  - alias:
+    - eGenix.com Public License 1.1.0
+    - EGENIX.COM PUBLIC LICENSE AGREEMENT Version 1.1.0
+    identifier: eGenix
+  - alias:
+    - Erlang Public License v1.1
+    - ERLANG PUBLIC LICENSE Version 1.1
+    identifier: ErlPL-1.1
+  - alias:
+    - Etalab Open License 2.0
+    - OPEN LICENCE 2.0 LICENCE OUVERTE 2.0
+    identifier: etalab-2.0
+  - alias:
+    - European Union Public License 1.0
+    - European Union Public Licence V.1.0
+    identifier: EUPL-1.0
+  - alias:
+    - Eurosym License
+    - Copyright (c) 1999-2002 Henrik Theiling Licence Version 2
+    identifier: Eurosym
+  - alias:
+    - FreeImage Public License v1.0
+    - FreeImage Public License - Version 1.0
+    identifier: FreeImage
+  - alias:
+    - FSF Unlimited License
+    - Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
+    identifier: FSFUL
+  - alias:
+    - FSF Unlimited License (with License Retention)
+    - Copyright 1996-2006 Free Software Foundation, Inc.
+    identifier: FSFULLR
+  - alias:
+    - Giftware License
+    - Allegro 4 (the giftware license)
+    identifier: Giftware
+  - alias:
+    - 3dfx Glide License
+    - 3dfx GLIDE Source Code General Public License
+    identifier: Glide
+  - alias:
+    - Glulxe License
+    identifier: Glulxe
+  - alias:
+    - Haskell Language Report License
+    identifier: HaskellReport
+  - alias:
+    - Hippocratic License 2.1
+    identifier: Hippocratic-2.1
+  - alias:
+    - Historical Permission Notice and Disclaimer - sell variant
+    identifier: HPND-sell-variant
+  - alias:
+    - IBM PowerPC Initialization and Boot Software
+    identifier: IBM-pibs
+  - alias:
+    - Info-ZIP License
+    identifier: Info-ZIP
+  - alias:
+    - Intel ACPI Software License Agreement
+    identifier: Intel-ACPI
+  - alias:
+    - Japan Network Information Center License
+    identifier: JPNIC
+  - alias:
+    - JSON License
+    identifier: JSON
+  - alias:
+    - Licence Art Libre 1.2
+    identifier: LAL-1.2
+  - alias:
+    - Licence Art Libre 1.3
+    identifier: LAL-1.3
+  - alias:
+    - Latex2e License
+    identifier: Latex2e
+  - alias:
+    - Lesser General Public License For Linguistic Resources
+    identifier: LGPLLR
+  - alias:
+    - libselinux public domain notice
+    identifier: libselinux-1.0
+  - alias:
+    - Linux Kernel Variant of OpenIB.org license
+    identifier: Linux-OpenIB
+  - alias:
+    - LaTeX Project Public License v1.0
+    identifier: LPPL-1.0
+  - alias:
+    - LaTeX Project Public License v1.1
+    identifier: LPPL-1.1
+  - alias:
+    - MakeIndex License
+    identifier: MakeIndex
+  - alias:
+    - MIT No Attribution
+    identifier: MIT-0
+  - alias:
+    - Enlightenment License (e16)
+    identifier: MIT-advertising
+  - alias:
+    - CMU License
+    identifier: MIT-CMU
+  - alias:
+    - enna License
+    identifier: MIT-enna
+  - alias:
+    - feh License
+    identifier: MIT-feh
+  - alias:
+    - mpich2 License
+    identifier: mpich2
+  - alias:
+    - Matrix Template Library License
+    identifier: MTLL
+  - alias:
+    - Mup License
+    identifier: Mup
+  - alias:
+    - Net Boolean Public License v1
+    identifier: NBPL-1.0
+  - alias:
+    - Non-Commercial Government Licence
+    identifier: NCGL-UK-2.0
+  - alias:
+    - Net-SNMP License
+    identifier: Net-SNMP
+  - alias:
+    - Newsletr License
+    identifier: Newsletr
+  - alias:
+    - Norwegian Licence for Open Government Data
+    identifier: NLOD-1.0
+  - alias:
+    - No Limit Public License
+    identifier: NLPL
+  - alias:
+    - Noweb License
+    identifier: Noweb
+  - alias:
+    - NRL License
+    identifier: NRL
+  - alias:
+    - NTP No Attribution
+    identifier: NTP-0
+  - alias:
+    - Open Use of Data Agreement v1.0
+    identifier: O-UDA-1.0
+  - alias:
+    - Open CASCADE Technology Public License
+    identifier: OCCT-PL
+  - alias:
+    - Open Data Commons Attribution License v1.0
+    identifier: ODC-By-1.0
+  - alias:
+    - SIL Open Font License 1.0 with no Reserved Font Name
+    identifier: OFL-1.0-no-RFN
+  - alias:
+    - SIL Open Font License 1.0 with Reserved Font Name
+    identifier: OFL-1.0-RFN
+  - alias:
+    - OGC Software License, Version 1.0
+    identifier: OGC-1.0
+  - alias:
+    - Open Government Licence - Canada
+    identifier: OGL-Canada-2.0
+  - alias:
+    - Open Government Licence v1.0
+    identifier: OGL-UK-1.0
+  - alias:
+    - Open Government Licence v2.0
+    identifier: OGL-UK-2.0
+  - alias:
+    - Open Government Licence v3.0
+    identifier: OGL-UK-3.0
+  - alias:
+    - Open Public License v1.0
+    identifier: OPL-1.0
+  - alias:
+    - The Parity Public License 6.0.0
+    identifier: Parity-6.0.0
+  - alias:
+    - The Parity Public License 7.0.0
+    identifier: Parity-7.0.0
+  - alias:
+    - ODC Public Domain Dedication & License 1.0
+    identifier: PDDL-1.0
+  - alias:
+    - PolyForm Noncommercial License 1.0.0
+    identifier: PolyForm-Noncommercial-1.0.0
+  - alias:
+    - PolyForm Small Business License 1.0.0
+    identifier: PolyForm-Small-Business-1.0.0
+  - alias:
+    - Python Software Foundation License 2.0
+    identifier: PSF-2.0
+  - alias:
+    - psfrag License
+    identifier: psfrag
+  - alias:
+    - Rdisc License
+    identifier: Rdisc
+  - alias:
+    - Red Hat eCos Public License v1.1
+    identifier: RHeCos-1.1
+  - alias:
+    - RSA Message-Digest License
+    identifier: RSA-MD
+  - alias:
+    - Sax Public Domain Notice
+    identifier: SAX-PD
+  - alias:
+    - SCEA Shared Source License
+    identifier: SCEA
+  - alias:
+    - SGI Free Software License B v1.0
+    identifier: SGI-B-1.0
+  - alias:
+    - SGI Free Software License B v1.1
+    identifier: SGI-B-1.1
+  - alias:
+    - Solderpad Hardware License v0.5
+    identifier: SHL-0.5
+  - alias:
+    - Solderpad Hardware License, Version 0.51
+    identifier: SHL-0.51
+  - alias:
+    - Sun Industry Standards Source License v1.2
+    - SUN INDUSTRY STANDARDS SOURCE LICENSE Version 1.2
+    identifier: SISSL-1.2
+  - alias:
+    - Secure Messaging Protocol Public License
+    identifier: SMPPL
+  - alias:
+    - Spencer License 86
+    identifier: Spencer-86
+  - alias:
+    - Spencer License 94
+    identifier: Spencer-94
+  - alias:
+    - Spencer License 99
+    identifier: Spencer-99
+  - alias:
+    - SSH OpenSSH license
+    identifier: SSH-OpenSSH
+  - alias:
+    - SSH short notice
+    identifier: SSH-short
+  - alias:
+    - Server Side Public License, v 1
+    identifier: SSPL-1.0
+  - alias:
+    - SugarCRM Public License v1.1.3
+    identifier: SugarCRM-1.1.3
+  - alias:
+    - TAPR Open Hardware License v1.0
+    identifier: TAPR-OHL-1.0
+  - alias:
+    - TCP Wrappers License
+    identifier: TCP-wrappers
+  - alias:
+    - TMate Open Source License
+    identifier: TMate
+  - alias:
+    - TORQUE v2.5+ Software License v1.1
+    identifier: TORQUE-1.1
+  - alias:
+    - Trusster Open Source License
+    identifier: TOSL
+  - alias:
+    - Technische Universitaet Berlin License 1.0
+    identifier: TU-Berlin-1.0
+  - alias:
+    - Technische Universitaet Berlin License 2.0
+    identifier: TU-Berlin-2.0
+  - alias:
+    - VOSTROM Public License for Open Source
+    identifier: VOSTROM
+  - alias:
+    - W3C Software Notice and License (1998-07-20)
+    identifier: W3C-19980720
+  - alias:
+    - W3C Software Notice and Document License (2015-05-13)
+    identifier: W3C-20150513
+  - alias:
+    - Wsuipa License
+    identifier: Wsuipa
+  - alias:
+    - Xerox License
+    identifier: Xerox
+  - alias:
+    - XSkat License
+    identifier: XSkat
+  - alias:
+    - Yahoo! Public License v1.0
+    identifier: YPL-1.0
+  - alias:
+    - Zed License
+    identifier: Zed
+  - alias:
+    - Zimbra Public License v1.4
+    identifier: Zimbra-1.4
+  - alias:
+    - Zope Public License 1.1
+    identifier: ZPL-1.1
+  - alias:
+    - Commons Clause License v1.0
+    identifier: Commons Clause
+  - alias:
+    - DMIT License
+    identifier: DMIT
+  - alias:
+    - GNU Affero General Public License v3.0 only
+    - AGPLv3
+    - AGPL-3.0
+    identifier: AGPL-3.0-only
+  - alias:
+    - GNU Affero General Public License v3.0 or later
+    - AGPLv3+
+    identifier: AGPL-3.0-or-later
+  - alias:
+    - Adaptive Public License 1.0
+    identifier: APL-1.0
+  - alias:
+    - Apple Public Source License 1.0
+    - Apple Public Source License version 1.0
+    identifier: APSL-1.0
+  - alias:
+    - Apple Public Source License 1.1
+    - Apple Public Source License version 1.1
+    identifier: APSL-1.1
+  - alias:
+    - Apple Public Source License 1.2
+    - Apple Public Source License version 1.2
+    identifier: APSL-1.2
+  - alias:
+    - Artistic License 1.0
+    - Artistic 1.0
+    identifier: Artistic-1.0
+  - alias:
+    - Artistic License 1.0 w/clause 8
+    identifier: Artistic-1.0-cl8
+  - alias:
+    - Artistic License 1.0 (Perl)
+    - (perl)
+    - Perl
+    - "license: perl"
+    identifier: Artistic-1.0-Perl
+  - alias:
+    - Lawrence Berkeley National Labs BSD variant license
+    identifier: BSD-3-Clause-LBNL
+  - alias:
+    - Cryptographic Autonomy License 1.0
+    identifier: CAL-1.0
+  - alias:
+    - Cryptographic Autonomy License 1.0 (Combined Work Exception)
+    identifier: CAL-1.0-Combined-Work-Exception
+  - alias:
+    - CeCILL Free Software License Agreement v2.1
+    identifier: CECILL-2.1
+  - alias:
+    - CUA Office Public License v1.0
+    identifier: CUA-OPL-1.0
+  - alias:
+    - Educational Community License v1.0
+    identifier: ECL-1.0
+  - alias:
+    - Eiffel Forum License v1.0
+    identifier: EFL-1.0
+  - alias:
+    - Entessa Public License v1.0
+    identifier: Entessa
+  - alias:
+    - Frameworx Open License 1.0
+    identifier: Frameworx-1.0
+  - alias:
+    - "Licence Libre du Quebec - Permissive version 1.1"
+    identifier: LiLiQ-P-1.1
+  - alias:
+    - "Licence Libre du Quebec - Reciprocite version 1.1"
+    identifier: LiLiQ-R-1.1
+  - alias:
+    - "Licence Libre du Quebec - Reciprocite forte version 1.1"
+    identifier: LiLiQ-Rplus-1.1
+  - alias:
+    - Lucent Public License Version 1.0
+    identifier: LPL-1.0
+  - alias:
+    - Mozilla Public License 2.0 (no copyleft exception)
+    identifier: MPL-2.0-no-copyleft-exception
+  - alias:
+    - Multics License
+    identifier: Multics
+  - alias:
+    - NASA Open Source Agreement 1.3
+    identifier: NASA-1.3
+  - alias:
+    - Non-Profit Open Software License 3.0
+    identifier: NPOSL-3.0
+  - alias:
+    - OCLC Research Public License 2.0
+    identifier: OCLC-2.0
+  - alias:
+    - SIL Open Font License 1.1 with no Reserved Font Name
+    identifier: OFL-1.1-no-RFN
+  - alias:
+    - SIL Open Font License 1.1 with Reserved Font Name
+    identifier: OFL-1.1-RFN
+  - alias:
+    - Open Group Test Suite License
+    identifier: OGTSL
+  - alias:
+    - OSET Public License version 2.1
+    identifier: OSET-PL-2.1
+  - alias:
+    - Reciprocal Public License 1.1
+    identifier: RPL-1.1
+  - alias:
+    - Reciprocal Public License 1.5
+    identifier: RPL-1.5
+  - alias:
+    - Ricoh Source Code Public License
+    identifier: RSCPL
+  - alias:
+    - Simple Public License 2.0
+    identifier: SimPL-2.0
+  - alias:
+    - Upstream Compatibility License v1.0
+    identifier: UCL-1.0
+  - alias:
+    - Sybase Open Watcom Public License 1.0
+    identifier: Watcom-1.0
+  - alias:
+    - X.Net License
+    identifier: Xnet
+  - alias:
+    - Artistic license
+    identifier: artistic
+  - alias:
+    - Artistic license 2.0
+    identifier: artistic-2.0
+  - alias:
+    - Verbatim License
+    - verbatim copying
+    identifier: Verbatim
+  - alias:
+    - Liberation Font License
+    - LIBERATION font software
+    identifier: Liberation
+  - alias:
+    - Trusted Computing Group License
+    - Trusted Computing Group (TCG)
+    identifier: TCGL
+  - alias:
+    - Nmap License
+    - NMAP LICENSE
+    identifier: Nmap
+  - alias:
+    - gnuplot License
+    identifier: gnuplot
+  - alias:
+    - Distributed Management Task Force
+    identifier: DMTF
+  Good Licenses:
+  - alias:
+    - BSD Zero Clause License
+    - Zero-Clause BSD
+    - Copyright (C) 2006 by Rob Landley <rob@landley.net>
+    identifier: 0BSD
+  - alias:
+    - Attribution Assurance License
+    - ATTRIBUTION ASSURANCE LICENSE
+    identifier: AAL
+  - alias:
+    - Academic Free License v1.1
+    - Academic Free License version 1.1
+    identifier: AFL-1.1
+  - alias:
+    - Academic Free License v1.2
+    - Academic Free License version 1.2
+    identifier: AFL-1.2
+  - alias:
+    - Academic Free License v2.0
+    - Academic Free License version 2.0
+    identifier: AFL-2.0
+  - alias:
+    - Academic Free License v2.1
+    - Academic Free License version 2.1
+    - AFLv2.1
+    identifier: AFL-2.1
+  - alias:
+    - Academic Free License v3.0
+    - Academic Free License version 3.0
+    - AFL
+    identifier: AFL-3.0
+  - alias:
+    - Apache License 1.1
+    - Apache Software License, Version 1.1
+    - ASL-1.1
+    - ASL 1.1
+    identifier: Apache-1.1
+  - alias:
+    - Apache License 2.0
+    - Apache License v2.0
+    - Apache 2.0 License
+    - Apache License Version 2.0
+    - Apache Software License 2.0
+    - "http://www.apache.org/licenses/LICENSE-2.0"
+    - Apache-2
+    - Apache2
+    - Apache 2
+    - Apache2.0
+    - Apache 2.0
+    - Apachev2
+    - Apache v2
+    - Apache v2.0
+    - ASL-2.0
+    - ASL 2.0
+    - ASL2.0
+    identifier: Apache-2.0
+  - alias:
+    - Apple Public Source License 2.0
+    - Apple Public Source License Version 2.0
+    - APSL 2.0
+    identifier: APSL-2.0
+  - alias:
+    - Artistic License 2.0
+    - Copyright (c) 2000-2006, The Perl Foundation
+    - Artistic 2.0
+    identifier: Artistic-2.0
+  - alias:
+    - BSD 1-Clause License
+    identifier: BSD-1-Clause
+  - alias:
+    - BSD 2-Clause "Simplified" License
+    - BSD 2-Clause
+    - BSD-2-Clause
+    - 2-clause BSD License
+    - BSD 3-Clause "New" or "Revised" License
+    - BSD-3-Clause
+    identifier: BSD
+  - alias:
+    - BSD-2-Clause Plus Patent License
+    identifier: BSD-2-Clause-Patent
+  - alias:
+    - Boost Software License 1.0
+    - Boost Software License - Version 1.0
+    - Boost
+    identifier: BSL-1.0
+  - alias:
+    - Computer Associates Trusted Open Source License 1.1
+    - COMPUTER ASSOCIATES TRUSTED OPEN SOURCE LICENSE
+    - Computer Associates Trusted Open Source License Version 1.1
+    - CATOSL
+    identifier: CATOSL-1.1
+  - alias:
+    - Common Development and Distribution License 1.0
+    - COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) Version 1.0
+    identifier: CDDL-1.0
+  - alias:
+    - CNRI Python License
+    - CNRIs License Agreement is retained in Python 1.6b1
+    - CNRI OPEN SOURCE LICENSE AGREEMENT
+    identifier: CNRI-Python
+  - alias:
+    - Common Public Attribution License 1.0
+    - Common Public Attribution License Version 1.0 (CPAL)
+    - CPAL
+    identifier: CPAL-1.0
+  - alias:
+    - Common Public License 1.0
+    - Common Public License Version 1.0
+    - CPL
+    identifier: CPL-1.0
+  - alias:
+    - Educational Community License v2.0
+    - Educational Community License version 2.0
+    - ECL 2.0
+    identifier: ECL-2.0
+  - alias:
+    - Eiffel Forum License v2.0
+    - Eiffel Forum License, version 2
+    - EFL 2.0
+    identifier: EFL-2.0
+  - alias:
+    - Eclipse Public License 1.0
+    - Eclipse Public License v1.0
+    - Eclipse Public License - v 1.0
+    identifier: EPL-1.0
+  - alias:
+    - Eclipse Public License 2.0
+    - Eclipse Public License v2.0
+    - Eclipse Public License - v 2.0
+    identifier: EPL-2.0
+  - alias:
+    - EU DataGrid Software License
+    - EU Datagrid
+    identifier: EUDatagrid
+  - alias:
+    - European Union Public License 1.1
+    - EUPL V.1.1
+    - EUPL 1.1
+    identifier: EUPL-1.1
+  - alias:
+    - European Union Public License 1.2
+    - EUPL v. 1.2
+    - EUPL 1.2
+    identifier: EUPL-1.2
+  - alias:
+    - Fair License
+    identifier: Fair
+  - alias:
+    - GNU General Public License v2.0 only
+    - GNU GENERAL PUBLIC LICENSE Version 2
+    - GPL(==-2)
+    - GPL-2.0
+    - GPL-2.0 License
+    - GPL2
+    - GPLV2
+    - GPLv2
+    - GPL-2
+    - GPL 2.0
+    - GPL v2
+    - GPL v2.0
+    - GNU GPL v2
+    identifier: GPL-2.0-only
+  - alias:
+    - GNU General Public License v2.0 or later
+    - GPL(>=-2)
+    - GPL(>=-2.0)
+    - GPL(>=2)
+    - GPL-2+
+    - GPL-2.0+
+    - GPLv2+
+    - GPLV2+
+    identifier: GPL-2.0-or-later
+  - alias:
+    - GNU General Public License v3.0 only
+    - version 3 of the GNU General Public License
+    - GPL-3.0
+    - GPLV3
+    - GPLv3
+    - GPL3
+    - GPL-3
+    - GPL3.0
+    identifier: GPL-3.0-only
+  - alias:
+    - GNU General Public License v3.0 or later
+    - GPL(>=-3)
+    - GPL(>=3)
+    - GPL-3+
+    - GPL-3.0+
+    - GPLv3+
+    identifier: GPL-3.0-or-later
+  - alias:
+    - Historical Permission Notice and Disclaimer
+    identifier: HPND
+  - alias:
+    - Intel Open Source License
+    identifier: Intel
+  - alias:
+    - IPA Font License
+    identifier: IPA
+  - alias:
+    - ICU License
+    identifier: ICU
+  - alias:
+    - IBM Public License v1.0
+    - IBM PUBLIC LICENSE
+    identifier: IPL-1.0
+  - alias:
+    - ISC License
+    - ISC license
+    - Copyright © 2004-2013 by Internet Systems Consortium, Inc. (“ISC”)
+    identifier: ISC
+  - alias:
+    - GNU Library General Public License v2 only
+    - first released version of the library GPL
+    - GNU LIBRARY GENERAL PUBLIC LICENSE Version 2
+    - LGPL-2.0
+    - LGPLv2
+    - LGPL-2
+    - LGPL v2.0
+    identifier: LGPL-2.0-only
+  - alias:
+    - GNU Library General Public License v2 or later
+    - LGPL(>=-2)
+    - LGPL(>=2)
+    - LGPL-2.0+
+    - LGPL-2+
+    - LGPLv2+
+    identifier: LGPL-2.0-or-later
+  - alias:
+    - GNU Lesser General Public License v2.1 only
+    - GNU Library Public License, version 2, hence the version number 2.1
+    - LGPL-2.1
+    - LGPLv2.1
+    - LGPL 2.1
+    identifier: LGPL-2.1-only
+  - alias:
+    - GNU Lesser General Public License v2.1 or later
+    - LGPL(>=-2.1)
+    - LGPL-2.1+
+    - LGPLv2.1+
+    - LGPL v2.1
+    identifier: LGPL-2.1-or-later
+  - alias:
+    - GNU Lesser General Public License v3.0 only
+    - version 3 of the GNU Lesser General Public License
+    - LGPL-3.0
+    - LGPLv3
+    - LGPL-3
+    - LGPL v3
+    identifier: LGPL-3.0-only
+  - alias:
+    - GNU Lesser General Public License v3.0 or later
+    - LGPL-3+
+    - LGPL-3.0+
+    - LGPLv3+
+    - LGPL3+
+    identifier: LGPL-3.0-or-later
+  - alias:
+    - Lucent Public License v1.02
+    - Lucent Public License Version 1.02
+    - LPL
+    identifier: LPL-1.02
+  - alias:
+    - LaTeX Project Public License v1.3c
+    - LPPL Version 1.3c
+    identifier: LPPL-1.3c
+  - alias:
+    - The MirOS Licence
+    identifier: MirOS
+  - alias:
+    - MIT License
+    - MIT license
+    - MIT-LICENSE
+    - (MIT)
+    - (mit)
+    - "http://opensource.org/licenses/MIT"
+    - MIT/X
+    - expat
+    identifier: MIT
+  - alias:
+    - Motosoto License
+    - Motosoto Open Source License
+    identifier: Motosoto
+  - alias:
+    - Mozilla Public License 1.0
+    - MOZILLA PUBLIC LICENSE Version 1.0
+    - Mozilla Public License Version 1.0
+    - MPLv1.0
+    identifier: MPL-1.0
+  - alias:
+    - Mozilla Public License 1.1
+    - Mozilla Public License Version 1.1
+    - MPLv1.1
+    identifier: MPL-1.1
+  - alias:
+    - Mozilla Public License 2.0
+    - "https://mozilla.org/MPL/2.0/"
+    - Mozilla Public License, v. 2.0
+    - Mozilla Public License Version 2.0
+    - MPLv2.0
+    - MPLv2
+    - MPL-2
+    - MPL2
+    - MPL 2.0
+    identifier: MPL-2.0
+  - alias:
+    - Microsoft Public License
+    identifier: MS-PL
+  - alias:
+    - Microsoft Reciprocal License
+    identifier: MS-RL
+  - alias:
+    - Mulan Permissive Software License, Version 2
+    - "http://license.coscl.org.cn/MulanPSL2"
+    - Mulan PSL v2
+    - Mulan PSL V2
+    - Mulan 2.0
+    - Mulan v2
+    identifier: MulanPSL-2.0
+  - alias:
+    - Naumen Public License
+    identifier: Naumen
+  - alias:
+    - University of Illinois/NCSA Open Source License
+    identifier: NCSA
+  - alias:
+    - Nethack General Public License
+    identifier: NGPL
+  - alias:
+    - Nokia Open Source License
+    identifier: Nokia
+  - alias:
+    - NTP License
+    identifier: NTP
+  - alias:
+    - SIL Open Font License 1.1
+    - SIL Open Font License, Version 1.1
+    identifier: OFL-1.1
+  - alias:
+    - Open Software License 1.0
+    - Open Software License version 1.0
+    - OSL 1.0
+    identifier: OSL-1.0
+  - alias:
+    - Open Software License 2.0
+    - Open Software License version 2.0
+    - OSL 2.0
+    identifier: OSL-2.0
+  - alias:
+    - Open Software License 2.1
+    - Open Software License version 2.1
+    - OSL 2.1
+    identifier: OSL-2.1
+  - alias:
+    - Open Software License 3.0
+    - Open Software License version 3.0
+    - OSL 3.0
+    identifier: OSL-3.0
+  - alias:
+    - PHP License v3.0
+    - The PHP License version 3.0
+    identifier: PHP-3.0
+  - alias:
+    - PostgreSQL License
+    identifier: PostgreSQL
+  - alias:
+    - Python License 2.0
+    - Python License, Version 2
+    - PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
+    identifier: Python-2.0
+  - alias:
+    - Q Public License 1.0
+    - Q Public License version 1.0
+    identifier: QPL-1.0
+  - alias:
+    - RealNetworks Public Source License v1.0
+    - RealNetworks Public Source License version 1.0
+    identifier: RPSL-1.0
+  - alias:
+    - Sun Industry Standards Source License v1.1
+    identifier: SISSL
+  - alias:
+    - Sleepycat License
+    - Sleepycat Software
+    identifier: Sleepycat
+  - alias:
+    - Sun Public License v1.0
+    - SUN PUBLIC LICENSE Version 1.0
+    - Sun Public License Version 1.0
+    identifier: SPL-1.0
+  - alias:
+    - Universal Permissive License v1.0
+    - Universal Permissive License (UPL), Version 1.0
+    identifier: UPL-1.0
+  - alias:
+    - Vovida Software License v1.0
+    - The Vovida Software License, Version 1.0
+    identifier: VSL-1.0
+  - alias:
+    - W3C Software Notice and License (2002-12-31)
+    - "http://www.w3.org/Consortium/Legal/2002"
+    identifier: W3C
+  - alias:
+    - zlib License
+    - zlib
+    - zlib/libpng
+    identifier: Zlib
+  - alias:
+    - Zope Public License 2.0
+    - Zope Public License (ZPL) Version 2.0
+    - ZPLv2.0
+    - ZPL 2.0
+    identifier: ZPL-2.0
+  - alias:
+    - Mulan Permissive Software License v1
+    - Mulan PSL v1
+    - Mulan v1.0
+    - Mulan 2.0
+    identifier: MulanPSL-1.0
+  - alias:
+    - Zope Public License 2.1
+    - Zope Public License (ZPL) Version 2.1
+    - ZPLv2.1
+    - ZPL 2.1
+    identifier: ZPL-2.1
+  - alias:
+    - OpenSSL License
+    - "http://www.openssl.org/"
+    identifier: OpenSSL
+  - alias:
+    - Independent JPEG Group License
+    - Independent JPEG Group
+    identifier: IJG
+  - alias:
+    - Creative Commons Attribution 1.0 Generic
+    - Creative Commons Attribution 1.0
+    identifier: CC-BY-1.0
+  - alias:
+    - Creative Commons Attribution 3.0 Unported
+    - Creative Commons Attribution 3.0
+    identifier: CC-BY-3.0
+  - alias:
+    - Creative Commons Attribution Share Alike 1.0 Generic
+    - Creative Commons Attribution-ShareAlike 1.0
+    identifier: CC-BY-SA-1.0
+  - alias:
+    - Creative Commons Attribution 4.0 International
+    identifier: CC-BY-4.0
+  - alias:
+    - Creative Commons Attribution Share Alike 4.0 International
+    - Creative Commons Attribution-ShareAlike 4.0 International
+    identifier: CC-BY-SA-4.0
+  - alias:
+    - Ruby License
+    identifier: Ruby
+  - alias:
+    - Creative Commons Zero v1.0 Universal
+    - CC0
+    identifier: CC0-1.0
+  - alias:
+    - TCL/TK License
+    - copyrighted by the Regents of the University of California, Sun Microsystems, Inc.
+    identifier: TCL
+  - alias:
+    - zlib/libpng License with Acknowledgement
+    - Copyright (c) 2002-2007 Charlie Poole
+    - zlib with acknowledgement
+    - zlib/libpng License with Acknowledgement
+    identifier: zlib-acknowledgement
+  - alias:
+    - The Unicode Character Database
+    identifier: UCD
+  - alias:
+    - GNU Free Documentation License v1.3 only
+    - GNU Free Documentation License, Version 1.3
+    - GFDLv1.3
+    - GFDL 1.3
+    - GFDL-1.3
+    identifier: GFDL-1.3-only
+  - alias:
+    - GNU General Public License v1.0 only
+    - GNU General Public License, version 1
+    - GPL v1.0
+    - GPL 1.0
+    - GPL-1.0
+    identifier: GPL-1.0-only
+  - alias:
+    - GNU General Public License v1.0 or later
+    - GPL+
+    - GPL v1.0+
+    - GPL 1.0+
+    - GPL-1.0+
+    - GPLv1+
+    identifier: GPL-1.0-or-later
+  - alias:
+    - Common Development and Distribution License 1.1
+    - COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) Version 1.1
+    identifier: CDDL-1.1
+  - alias:
+    - Creative Commons Attribution Share Alike 3.0 Unported
+    - Attribution-ShareAlike 3.0
+    identifier: CC-BY-SA-3.0
+  - alias:
+    - NetCDF license
+    - Copyright 1993-2014 University Corporation for Atmospheric Research/Unidata
+    identifier: NetCDF
+  - alias:
+    - ImageMagick License
+    - ImageMagick license
+    identifier: ImageMagick
+  - alias:
+    - Do What The F*ck You Want To Public License
+    identifier: WTFPL
+  - alias:
+    - Freetype Project License
+    identifier: FTL
+  - alias:
+    - Saxpath License
+    identifier: Saxpath
+  - alias:
+    - JasPer License
+    identifier: JasPer-2.0
+  - alias:
+    - XPP License
+    identifier: xpp
+  - alias:
+    - Unicode License Agreement - Data Files and Software (2015)
+    identifier: Unicode-DFS-2015
+  - alias:
+    - Unicode License Agreement - Data Files and Software (2016)
+    identifier: Unicode-DFS-2016
+  - alias:
+    - Unicode Terms of Use
+    identifier: Unicode-TOU
+  - alias:
+    - Sendmail License
+    identifier: Sendmail
+  - alias:
+    - Sendmail License 8.23
+    identifier: Sendmail-8.23
+  - alias:
+    - Open LDAP Public License v1.1
+    identifier: OLDAP-1.1
+  - alias:
+    - Open LDAP Public License v1.2
+    identifier: OLDAP-1.2
+  - alias:
+    - Open LDAP Public License v1.3
+    identifier: OLDAP-1.3
+  - alias:
+    - Open LDAP Public License v1.4
+    identifier: OLDAP-1.4
+  - alias:
+    - Open LDAP Public License v2.0 (or possibly 2.0A and 2.0B)
+    identifier: OLDAP-2.0
+  - alias:
+    - Open LDAP Public License v2.0.1
+    identifier: OLDAP-2.0.1
+  - alias:
+    - Open LDAP Public License v2.1
+    identifier: OLDAP-2.1
+  - alias:
+    - Open LDAP Public License v2.2
+    identifier: OLDAP-2.2
+  - alias:
+    - Open LDAP Public License v2.2.1
+    identifier: OLDAP-2.2.1
+  - alias:
+    - Open LDAP Public License 2.2.2
+    identifier: OLDAP-2.2.2
+  - alias:
+    - Open LDAP Public License v2.4
+    identifier: OLDAP-2.4
+  - alias:
+    - Open LDAP Public License v2.5
+    identifier: OLDAP-2.5
+  - alias:
+    - Open LDAP Public License v2.6
+    identifier: OLDAP-2.6
+  - alias:
+    - Open LDAP Public License v2.8
+    identifier: OLDAP-2.8
+  - alias:
+    - libtiff License
+    identifier: libtiff
+  - alias:
+    - libpng License
+    - libpng-1.0.6
+    - LibPng
+    identifier: Libpng
+  - alias:
+    - PNG Reference Library version 2
+    identifier: libpng-2.0
+  - alias:
+    - Arphic Public License
+    - ARPHIC PUBLIC LICENSE
+    identifier: Arphic
+  - alias:
+    - Adobe Postscript AFM License
+    - 14 PostScript(R) AFM files
+    identifier: APAFML
+  - alias:
+    - xinetd License
+    - allowing xinetd as maintained by me (Rob Braun)
+    identifier: xinetd
+  - alias:
+    - Vim License
+    identifier: Vim
+  - alias:
+    - Scheme Widget Library (SWL) Software License Agreement
+    identifier: SWL
+  - alias:
+    - Original SSLeay License
+    identifier: SSLeay
+  - alias:
+    - SNIA Public License 1.1
+    - Storage Networking Industry Association
+    identifier: SNIA
+  - alias:
+    - Qhull License
+    - www.qhull.org
+    identifier: Qhull
+  - alias:
+    - psutils License
+    - PS Utilities Package
+    identifier: psutils
+  - alias:
+    - Plexus Classworlds License
+    - "http://classwords.codehaus.org/"
+    identifier: Plexus
+  - alias:
+    - Open Market License
+    - copyrighted by Open Market
+    identifier: OML
+  - alias:
+    - Old FSF Documentation License
+    identifier: OFSFDL
+  - alias:
+    - MIT +no-false-attribs License
+    identifier: MITNFA
+  - alias:
+    - Leptonica License
+    - Leptonica
+    identifier: Leptonica
+  - alias:
+    - Interbase Public License v1.0
+    - INTERBASE PUBLIC LICENSE Version 1.0
+    identifier: Interbase-1.0
+  - alias:
+    - GL2PS License
+    - GL2PS LICENSE Version 2
+    identifier: GL2PS
+  - alias:
+    - FSF All Permissive License
+    identifier: FSFAP
+  - alias:
+    - BSD Protection License
+    identifier: BSD-Protection
+  - alias:
+    - BSD with attribution
+    - "Universidad de Palermo, Argentina"
+    identifier: BSD-3-Clause-Attribution
+  - alias:
+    - Afmparse License
+    - (C) 1988, 1989 by Adobe Systems Incorporated
+    identifier: Afmparse
+  - alias:
+    - public domain
+    identifier: Public Domain
+  - alias:
+    - Zend License v2.0
+    identifier: Zend-2.0
+  Need Review Licenses:
+  - alias:
+    - Apache License 1.0
+    - Copyright (c) 1995-1999 The Apache Group
+    - ASL 1.0
+    identifier: Apache-1.0
+  - alias:
+    - BitTorrent Open Source License v1.1
+    identifier: BitTorrent-1.1
+  - alias:
+    - BSD 2-Clause FreeBSD License
+    identifier: BSD-2-Clause-FreeBSD
+  - alias:
+    - BSD 3-Clause Clear License
+    identifier: BSD-3-Clause-Clear
+  - alias:
+    - BSD 4-Clause "Original" or "Old" License
+    identifier: BSD-4-Clause
+  - alias:
+    - CeCILL Free Software License Agreement v2.0
+    identifier: CECILL-2.0
+  - alias:
+    - CeCILL-B Free Software License Agreement
+    identifier: CECILL-B
+  - alias:
+    - CeCILL-C Free Software License Agreement
+    identifier: CECILL-C
+  - alias:
+    - Clarified Artistic License
+    identifier: ClArtistic
+  - alias:
+    - Condor Public License v1.1
+    identifier: Condor-1.1
+  - alias:
+    - GNU Free Documentation License v1.1 only
+    identifier: GFDL-1.1-only
+  - alias:
+    - GNU Free Documentation License v1.1 or later
+    identifier: GFDL-1.1-or-later
+  - alias:
+    - GNU Free Documentation License v1.2 only
+    identifier: GFDL-1.2-only
+  - alias:
+    - GNU Free Documentation License v1.2 or later
+    identifier: GFDL-1.2-or-later
+  - alias:
+    - GNU Free Documentation License v1.3 or later
+    identifier: GFDL-1.3-or-later
+  - alias:
+    - gSOAP Public License v1.3b
+    identifier: gSOAP-1.3b
+  - alias:
+    - iMatix Standard Function Library Agreement
+    identifier: iMatix
+  - alias:
+    - Imlib2 License
+    identifier: Imlib2
+  - alias:
+    - LaTeX Project Public License v1.2
+    identifier: LPPL-1.2
+  - alias:
+    - LaTeX Project Public License v1.3a
+    identifier: LPPL-1.3a
+  - alias:
+    - Netizen Open Source License
+    identifier: NOSL
+  - alias:
+    - Netscape Public License v1.0
+    identifier: NPL-1.0
+  - alias:
+    - Netscape Public License v1.1
+    identifier: NPL-1.1
+  - alias:
+    - ODC Open Database License v1.0
+    identifier: ODbL-1.0
+  - alias:
+    - SIL Open Font License 1.0
+    identifier: OFL-1.0
+  - alias:
+    - Open LDAP Public License v2.3
+    identifier: OLDAP-2.3
+  - alias:
+    - Open LDAP Public License v2.7
+    identifier: OLDAP-2.7
+  - alias:
+    - Open Software License 1.1
+    - Open Software License version 1.1
+    - OSL 1.1
+    - OSL-1.1
+    identifier: OSL-1.1
+  - alias:
+    - PHP License v3.01
+    identifier: PHP-3.01
+  - alias:
+    - SGI Free Software License B v2.0
+    identifier: SGI-B-2.0
+  - alias:
+    - Standard ML of New Jersey License
+    identifier: SMLNJ
+  - alias:
+    - The Unlicense
+    identifier: Unlicense
+  - alias:
+    - X11 License
+    identifier: X11
+  - alias:
+    - XFree86 License 1.1
+    identifier: XFree86-1.1
+  - alias:
+    - Yahoo! Public License v1.1
+    identifier: YPL-1.1
+  - alias:
+    - Zimbra Public License v1.3
+    identifier: Zimbra-1.3
diff --git a/get_license/extract_util.py b/get_license/extract_util.py
new file mode 100644
index 0000000000000000000000000000000000000000..c5932959e53afca83a4d0c8b15accba0fdb8ba13
--- /dev/null
+++ b/get_license/extract_util.py
@@ -0,0 +1,142 @@
+import os
+import tarfile
+import zipfile
+import lzma
+import filetype
+import logging
+import shutil
+
+log_check = logging.getLogger()
+
+def _extract_tar(tarball_path, extract_path):
+    """
+    Extract tar package in extract_path. If extract failed the program will exit.
+    """
+    res_flag = True
+    if not os.path.isfile(tarball_path):
+        log_check.error("%s is not a file", tarball_path)
+        res_flag = False
+        return res_flag
+
+    try:
+        with tarfile.open(tarball_path) as content:
+            content.extractall(path=extract_path)
+    except FileNotFoundError:
+        res_flag = False
+        log_check.error("%s can not be found", tarball_path)
+    except tarfile.CompressionError:
+        res_flag = False
+        log_check.error("%s can not be decoded correctly", tarball_path)
+    except tarfile.ReadError:
+        res_flag = False
+        log_check.error("%s is invalid tar file", tarball_path)
+    finally:
+        return res_flag
+
+
+def _extract_bz2(bz2_path, extract_path):
+    """
+    Extract bz2 package in extract_path. If extract failed the program will exit.
+    """
+    res_flag = True
+    if not os.path.isfile(bz2_path):
+        log_check.error("%s is not a bz2 file", bz2_path)
+        res_flag = False
+        return res_flag
+
+    try:
+        archive = tarfile.open(bz2_path, 'r:bz2')
+        for tarinfo in archive:
+            archive.extract(tarinfo, extract_path)
+        archive.close()
+    except FileNotFoundError:
+        res_flag = False
+        log_check.error("%s can not be found", bz2_path)
+    except tarfile.CompressionError:
+        res_flag = False
+        log_check.error("%s can not be decoded correctly", bz2_path)
+    except tarfile.ReadError:
+        res_flag = False
+        log_check.error("%s is invalid tar file", bz2_path)
+    finally:
+        return res_flag
+
+
+def _extract_zip(zip_path, extract_path):
+    """
+    Extract zip package in extract_path. If extract failed the program will exit.
+    """
+    res_flag = True
+    if not os.path.isfile(zip_path):
+        log_check.error("%s is not a zip file", zip_path)
+        res_flag = False
+        return res_flag
+
+    try:
+        zip_file = zipfile.ZipFile(zip_path)
+        zip_file.extractall(extract_path)
+        zip_file.close()
+    except FileNotFoundError:
+        res_flag = False
+        log_check.error("%s can not be found", zip_path)
+    except zipfile.BadZipfile:
+        res_flag = False
+        log_check.error("%s is bad zip file", zip_path)
+    except zipfile.LargeZipFile:
+        res_flag = False
+        log_check.error("The zip file requires the zip64 feature but is not enabled")
+    finally:
+        return res_flag
+
+
+def _extract_xz(xz_path, extract_path):
+    """
+    extract tar.xz to specific path
+    """
+    if not os.path.isfile(xz_path):
+        log_check.error("%s is not a file", xz_path)
+        return False
+    tar_file = os.path.join(extract_path, os.path.basename(xz_path).split(".xz")[0])
+    try:
+        with lzma.open(xz_path, "rb") as file_input:
+            with open(tar_file, "wb") as output:
+                shutil.copyfileobj(file_input, output)
+                res = _extract_tar(tar_file, extract_path)
+                os.remove(tar_file)
+                return res
+    except FileNotFoundError:
+        log_check.error("%s can not found", xz_path)
+        return False
+    except lzma.LZMAError:
+        log_check.error("%s can not be decompressed", xz_path)
+        return False
+
+
+def extract_tarball(tb_file, extract_path):
+    """
+    Entrypoint for extract tarball
+    """
+    method_map = {
+            "tar": _extract_tar,
+            "gz": _extract_tar,
+            "bz2": _extract_bz2,
+            "zip": _extract_zip,
+            "xz": _extract_xz
+            }
+    ft = filetype.guess(tb_file)
+    method = None if not ft else method_map.get(ft.extension, None)
+    if method:
+        return method(tb_file, extract_path)
+    log_check.error("filetype: %s not support to extract")
+    return False
+
+
+def extract_all_pkg(tarballs, extract_path):
+    """
+    Extract all tarballs
+    """
+    extr_res = True
+    for tname in tarballs:
+        if not extract_tarball(tname, extract_path):
+            extr_res = False
+    return extr_res
\ No newline at end of file
diff --git a/get_license/get_license.py b/get_license/get_license.py
new file mode 100644
index 0000000000000000000000000000000000000000..87fb972e26a47f73e7fff39a0a543d33b6b139d1
--- /dev/null
+++ b/get_license/get_license.py
@@ -0,0 +1,64 @@
+import argparse
+import os
+
+from src.license_driver import parse_spec_license, parse_compressed_file_license, get_all_license,\
+                                load_config_new, LICENSE_YAML_PATH
+
+COMMAMD_NAME = {
+    "from-spec",
+    "from-src",
+    "from-all"
+}
+
+def load_my_args():
+    parser = argparse.ArgumentParser()
+    
+    subparsers = parser.add_subparsers(dest="cmd_name",
+                                       help="use sub command to choose get license from spec, compressed file or dir")
+    
+    spec_parser = subparsers.add_parser("from-spec",
+                                        help="get license from spec")
+    spec_parser.add_argument("-f", "--file", required=True,
+                             help="file path of spec")
+    spec_parser.set_defaults(func = parse_spec_license)
+
+    src_parser = subparsers.add_parser("from-src",
+                                        help="get license from compressed file")
+    src_parser.add_argument("-c", "--compresses", required=True, type=str, nargs="+",
+                             help="file path of compressed")
+    src_parser.add_argument("-e", "--extract_dir", default="/tmp/get_licenses/pkg_src",
+                             help="file dir of extract")
+    src_parser.set_defaults(func = parse_compressed_file_license)
+
+    all_parser = subparsers.add_parser("from-all",
+                                        help="get license from compressed file")
+    all_parser.add_argument("-d", "--work_dir", required=True,
+                             help="file path of parsed dir")
+    all_parser.add_argument("-e", "--extract_dir", default="/tmp/get_licenses/pkg_src",
+                             help="file dir of extract")
+    all_parser.set_defaults(func = get_all_license)
+
+    return parser.parse_args()
+
+
+if __name__ == "__main__":
+    args = load_my_args()
+
+    result = {}
+    spec_lic = {}
+    src_lic = {}
+    pl = load_config_new(LICENSE_YAML_PATH)
+    if not args.cmd_name or not args.cmd_name in COMMAMD_NAME:
+        print("not find cmd")
+    else:
+        if args.cmd_name == "from-all":
+            spec_lic, src_lic = args.func(args.work_dir, args.extract_dir, pl)
+        elif args.cmd_name == "from-src":
+            src_lic = args.func(args.compresses, args.extract_dir, pl)
+        elif args.cmd_name == "from-spec":
+            spec_lic = args.func(args.file, pl)
+    result["spec_license"] = spec_lic
+    result["src_license"] = src_lic
+
+    print(result) 
+    
\ No newline at end of file
diff --git a/get_license/license_driver.py b/get_license/license_driver.py
new file mode 100644
index 0000000000000000000000000000000000000000..8d636fa01ac22493450a4295973ead90743f7a25
--- /dev/null
+++ b/get_license/license_driver.py
@@ -0,0 +1,110 @@
+from get_license.spec import Spec 
+from get_license.check_license import PkgLicense
+from get_license.extract_util import extract_all_pkg
+
+import os
+import logging
+import subprocess
+import shutil
+
+log_check = logging.getLogger()
+
+CURRENT_DIR = os.path.dirname(os.path.abspath(__file__))
+LICENSE_LIST_PATH = os.path.join(CURRENT_DIR, "config", "LicenseList.txt")
+FULLNAME_LICENSE_PATH = os.path.join(CURRENT_DIR, "config", "license_translations")
+LICENSE_YAML_PATH = os.path.join(CURRENT_DIR, "config", "Licenses.yaml")
+UNUSED_FILE_SUFFIX = (".spec~", ".specfc", ".spec.old", ".osc")
+COMPRESSED_TYPE = ("tar", "tar.xz", ".tar.gz", ".tgz", ".gz", ".zip", ".bz2")
+
+def get_parsed_spec(filename, parse_name="temp.spec"):
+    """
+    split license str in spec file
+
+    :return:{
+        license's short name: friendlyness(white, black, unknow),
+        ...
+    }
+    """
+    if not os.path.isfile(filename):
+        log_check.error("spec file %s not exist", os.path.basename(filename))
+        return ""
+    parse_file = os.path.join(os.path.dirname(filename), parse_name)
+    cmd_list = ["rpmspec", "--parse", filename, ">", parse_file]
+    try:
+        sub_proc = subprocess.run(" ".join(cmd_list), 
+                                  stdout=subprocess.PIPE, stderr=subprocess.PIPE, 
+                                  check=True, shell=True)
+    except subprocess.CalledProcessError as e:
+        log_check.error("parse spec failed: %s", e)
+        return ""
+    return parse_file
+
+def load_config(list_file, full_name_file):
+    if not os.path.isfile(list_file) or not os.path.isfile(full_name_file):
+        log_check.error("cannot find file")
+        return None
+    pl = PkgLicense()
+    PkgLicense.load_licenses_dict(pl.license_list, list_file)
+    PkgLicense.load_licenses_dict(pl.full_name_map, full_name_file)
+    return pl
+
+
+def load_config_new(license_config):
+    if not os.path.isfile(license_config):
+        log_check.error("cannot find file")
+        return None
+    pl = PkgLicense()
+    pl.license_list, pl.full_name_map = PkgLicense.load_licenses_new(license_config)
+    return pl
+
+
+def parse_spec_license(spec_file, pl):
+    parse_spec = get_parsed_spec(spec_file)
+    if not parse_spec:
+        parse_spec = spec_file
+    spec_licenses =  pl.scan_licenses_in_spec(parse_spec, pl.full_name_map)
+    spec_lic_dict = {}
+    for lic in spec_licenses:
+        spec_lic_dict[lic] = pl.license_list.get(lic, "unknow")
+    os.remove(parse_spec)
+    return spec_lic_dict
+
+
+def parse_compressed_file_license(files, extract_path, pl):
+    src_lic_dict = {}
+    _ = not os.path.exists(extract_path) and os.makedirs(extract_path)
+    extract_all_pkg(files, extract_path)
+    src_licenses = PkgLicense.scan_licenses_in_source(extract_path, pl.full_name_map)
+    for lic in src_licenses:
+        src_lic_dict[lic] = pl.license_list.get(lic, "unknow")
+    shutil.rmtree(extract_path)
+    return src_lic_dict
+
+
+def get_all_license(work_dir, extract_path, pl):
+    compressed_files = []
+    spec_file = None
+    license_in_spec = {}
+    license_in_src = {}
+
+    for file_name in os.listdir(work_dir):
+        file_path = os.path.join(work_dir, file_name)
+        log_check.debug('Scanning file: %s', file_path)
+        if is_compressed_file(file_path):  # save all file need to check license
+            compressed_files.append(file_path)
+            continue
+        if file_name.endswith(".spec"):
+            license_in_spec = parse_spec_license(file_path, pl)
+
+    license_in_src = parse_compressed_file_license(compressed_files, extract_path, pl)
+
+    return license_in_spec, license_in_src
+
+def is_compressed_file(src_file):
+    """
+    Determine whether it is a compressed file.
+    """
+    if os.path.isfile(src_file):
+        if src_file.endswith(COMPRESSED_TYPE):
+            return True
+    return False
\ No newline at end of file
diff --git a/get_license/spec.py b/get_license/spec.py
new file mode 100644
index 0000000000000000000000000000000000000000..012c848c1111f79cab7b5f4bb6928ffe27a53f47
--- /dev/null
+++ b/get_license/spec.py
@@ -0,0 +1,422 @@
+"""Python module for parsing RPM spec files.
+
+RPMs are build from a package's sources along with a spec file. The spec file controls how the RPM
+is built. This module allows you to parse spec files and gives you simple access to various bits of
+information that is contained in the spec file.
+
+Current status: This module does not parse everything of a spec file. Only the pieces I needed. So
+there is probably still plenty of stuff missing. However, it should not be terribly complicated to
+add support for the missing pieces.
+
+"""
+
+import re
+from abc import (ABCMeta, abstractmethod)
+
+__all__ = ['Spec', 'replace_macros', 'Package']
+
+
+class _Tag(metaclass=ABCMeta):
+    def __init__(self, name, pattern_obj, attr_type):
+        self.name = name
+        self.pattern_obj = pattern_obj
+        self.attr_type = attr_type
+
+    def test(self, line):
+        return re.search(self.pattern_obj, line)
+
+    def update(self, spec_obj, context, match_obj, line):
+        """Update given spec object and parse context and return them again.
+
+        :param spec_obj: An instance of Spec class
+        :param context: The parse context
+        :param match_obj: The re.match object
+        :param line: The original line
+        :return: Given updated Spec instance and parse context dictionary.
+        """
+
+        assert spec_obj
+        assert context
+        assert match_obj
+        assert line
+
+        return self.update_impl(spec_obj, context, match_obj, line)
+
+    @abstractmethod
+    def update_impl(self, spec_obj, context, match_obj, line):
+        pass
+
+    @staticmethod
+    def current_target(spec_obj, context):
+        target_obj = spec_obj
+        if context['current_subpackage'] is not None:
+            target_obj = context['current_subpackage']
+        return target_obj
+
+
+class _NameValue(_Tag):
+    """Parse a simple name → value tag."""
+
+    def __init__(self, name, pattern_obj, attr_type=None):
+        super().__init__(name, pattern_obj, attr_type if attr_type else str)
+
+    def update_impl(self, spec_obj, context, match_obj, line):
+        target_obj = _Tag.current_target(spec_obj, context)
+        value = match_obj.group(1)
+
+        # Sub-packages
+        if self.name == 'name':
+            spec_obj.packages = []
+            spec_obj.packages.append(Package(value))
+
+        setattr(target_obj, self.name, self.attr_type(value))
+        return spec_obj, context
+
+
+class _MacroDef(_Tag):
+    """Parse global macro definitions."""
+
+    def __init__(self, name, pattern_obj):
+        super().__init__(name, pattern_obj, str)
+
+    def update_impl(self, spec_obj, context, match_obj, line):
+        name, value = match_obj.groups()
+        setattr(spec_obj, name, str(value))
+        return spec_obj, context
+
+
+class _List(_Tag):
+    """Parse a tag that expands to a list."""
+
+    def __init__(self, name, pattern_obj):
+        super().__init__(name, pattern_obj, list)
+
+    def update_impl(self, spec_obj, context, match_obj, line):
+        target_obj = _Tag.current_target(spec_obj, context)
+
+        if not hasattr(target_obj, self.name):
+            setattr(target_obj, self.name, list())
+
+        value = match_obj.group(1)
+        if self.name == 'packages':
+            if value == '-n':
+                subpackage_name = line.rsplit(' ', 1)[-1].rstrip()
+            else:
+                subpackage_name = '{}-{}'.format(spec_obj.name, value)
+            package = Package(subpackage_name)
+            context['current_subpackage'] = package
+            package.is_subpackage = True
+            spec_obj.packages.append(package)
+        elif self.name in ['build_requires', 'requires', 'conflicts', 'obsoletes', 'provides']:
+            # Macros are valid in requirements
+            value = replace_macros(value, spec=spec_obj)
+
+            # It's also legal to do:
+            #   Requires: a b c
+            #   Requires: b >= 3.1
+            #   Requires: a, b >= 3.1, c
+
+            # 1. Tokenize
+            tokens = [val for val in re.split('[\t\n, ]', value) if val != '']
+            values = []
+
+            # 2. Join
+            add = False
+            for val in tokens:
+                if add:
+                    add = False
+                    val = values.pop() + ' ' + val
+                elif val in ['>=', '!=', '>', '<', '<=', '==', '=']:
+                    add = True  # Add next value to this one
+                    val = values.pop() + ' ' + val
+                values.append(val)
+
+            for val in values:
+                requirement = Requirement(val)
+                getattr(target_obj, self.name).append(requirement)
+        else:
+            getattr(target_obj, self.name).append(value)
+
+        return spec_obj, context
+
+
+class _ListAndDict(_Tag):
+    """Parse a tag that expands to a list and to a dict."""
+
+    def __init__(self, name, pattern_obj):
+        super().__init__(name, pattern_obj, list)
+
+    def update_impl(self, spec_obj, context, match_obj, line):
+        source_name, value = match_obj.groups()
+        dictionary = getattr(spec_obj, '{}_dict'.format(self.name))
+        dictionary[source_name] = value
+        target_obj = _Tag.current_target(spec_obj, context)
+        try:
+            getattr(target_obj, self.name).append(value)
+        except AttributeError as ae:
+            pass
+        return spec_obj, context
+
+
+_tags = [
+    _NameValue('name', re.compile(r'^Name:\s*(\S+)')),
+    _NameValue('version', re.compile(r'^Version:\s*(\S+)')),
+    _NameValue('epoch', re.compile(r'^Epoch:\s*(\S+)'), attr_type=int),
+    _NameValue('release', re.compile(r'^Release:\s*(\S+)')),
+    _NameValue('summary', re.compile(r'^Summary:\s*(.+)')),
+    _NameValue('license', re.compile(r'^License:\s*(.+)')),
+    _NameValue('group', re.compile(r'^Group:\s*(\S+)')),
+    _NameValue('url', re.compile(r'^URL:\s*(\S+)', re.IGNORECASE)),
+    _NameValue('buildroot', re.compile(r'^BuildRoot:\s*(\S+)')),
+    _NameValue('buildarch', re.compile(r'^BuildArch:\s*(\S+)')),
+    _ListAndDict('sources', re.compile(r'^(Source\d*):\s*(\S+)')),
+    _ListAndDict('patches', re.compile(r'^(Patch\d*):\s*(\S+)')),
+    _List('build_requires', re.compile(r'^BuildRequires:\s*(.+)')),
+    _List('requires', re.compile(r'^Requires:\s*(.+)')),
+    _List('conflicts', re.compile(r'^Conflicts:\s*(.+)')),
+    _List('obsoletes', re.compile(r'^Obsoletes:\s*(.+)')),
+    _List('provides', re.compile(r'^Provides:\s*(.+)')),
+    _List('packages', re.compile(r'^%package\s+(\S+)')),
+    _MacroDef('define', re.compile(r'^%define\s+(\S+)\s+(\S+)')),
+    _MacroDef('global', re.compile(r'^%global\s+(\S+)\s+(\S+)'))
+]
+
+_macro_pattern = re.compile(r'%{(\S+?)\}')
+
+
+def _parse(spec_obj, context, line):
+    for tag in _tags:
+        match = tag.test(line)
+        if match:
+            return tag.update(spec_obj, context, match, line)
+    return spec_obj, context
+
+
+class Requirement:
+    """Represents a single requirement or build requirement in an RPM spec file.
+
+    Each spec file contains one or more requirements or build requirements. 
+    For example, consider following spec file::
+
+        Name:           foo
+        Version:        0.1
+
+        %description
+        %{name} is the library that everyone needs.
+
+        %package devel
+        Summary: Header files, libraries and development documentation for %{name}
+        Group: Development/Libraries
+        Requires: %{name}%{?_isa} = %{version}-%{release}
+        BuildRequires: gstreamer%{?_isa} >= 0.1.0
+
+        %description devel
+        This package contains the header files, static libraries, and development
+        documentation for %{name}. If you like to develop programs using %{name}, you
+        will need to install %{name}-devel.
+
+    This spec file's requirements have a name and either a required or minimum
+    version.
+    """
+    expr = re.compile(r'(.*?)\s+([<>]=?|=)\s+(\S+)')
+
+    def __init__(self, name):
+        assert isinstance(name, str)
+        self.line = name
+        match = Requirement.expr.match(name)
+        if match:
+            self.name = match.group(1)
+            self.operator = match.group(2)
+            self.version = match.group(3)
+        else:
+            self.name = name
+            self.operator = None
+            self.version = None
+
+    def __repr__(self):
+        return self.line
+
+
+class Package:
+    """Represents a single package in a RPM spec file.
+
+    Each spec file describes at least one package and can contain one or more subpackages (described
+    by the %package directive). For example, consider following spec file::
+
+        Name:           foo
+        Version:        0.1
+
+        %description
+        %{name} is the library that everyone needs.
+
+        %package devel
+        Summary: Header files, libraries and development documentation for %{name}
+        Group: Development/Libraries
+        Requires: %{name}%{?_isa} = %{version}-%{release}
+
+        %description devel
+        This package contains the header files, static libraries, and development
+        documentation for %{name}. If you like to develop programs using %{name}, you
+        will need to install %{name}-devel.
+
+        %package -n bar
+        Summary: A command line client for foo.
+        License: GPLv2+
+
+        %description -n bar
+        This package contains a command line client for foo.
+
+    This spec file will create three packages:
+
+    * A package named foo, the base package.
+    * A package named foo-devel, a subpackage.
+    * A package named bar, also a subpackage, but without the foo- prefix.
+
+    As you can see above, the name of a subpackage normally includes the main package name. When the
+    -n option is added to the %package directive, the prefix of the base package name is omitted and
+    a completely new name is used.
+
+    """
+
+    def __init__(self, name):
+        assert isinstance(name, str)
+
+        for tag in _tags:
+            if tag.attr_type is list and tag.name in ["build_requires", "requires", "conflicts", "obsoletes",
+                                                      "provides"]:
+                setattr(self, tag.name, tag.attr_type())
+
+        self.name = name
+        self.is_subpackage = False
+
+    def __repr__(self):
+        return "Package('{}')".format(self.name)
+
+
+class Spec:
+    """Represents a single spec file.
+
+    """
+
+    def __init__(self):
+        for tag in _tags:
+            if tag.attr_type is list:
+                setattr(self, tag.name, tag.attr_type())
+            else:
+                setattr(self, tag.name, None)
+
+        self.sources_dict = dict()
+        self.patches_dict = dict()
+
+    @property
+    def packages_dict(self):
+        """All packages in this RPM spec as a dictionary.
+
+        You can access the individual packages by their package name, e.g.,
+
+        git_spec.packages_dict['git-doc']
+
+        """
+        assert self.packages
+        return dict(zip([package.name for package in self.packages], self.packages))
+
+    @staticmethod
+    def from_file(filename):
+        """Creates a new Spec object from a given file.
+
+        :param filename: The path to the spec file.
+        :return: A new Spec object.
+        """
+
+        spec = Spec()
+        with open(filename, 'r', encoding='utf-8') as f:
+            parse_context = {
+                'current_subpackage': None
+            }
+            for line in f:
+                spec, parse_context = _parse(spec, parse_context, line)
+        return spec
+
+    @staticmethod
+    def from_string(string: str):
+        """Creates a new Spec object from a given string.
+
+        :param string: The contents of a spec file.
+        :return: A new Spec object.
+        """
+
+        spec = Spec()
+        parse_context = {
+            'current_subpackage': None
+        }
+        for line in string.splitlines():
+            spec, parse_context = _parse(spec, parse_context, line)
+        return spec
+
+
+def replace_macros(string, spec=None):
+    """Replace all macros in given string with corresponding values.
+
+    For example: a string '%{name}-%{version}.tar.gz' will be transformed to 'foo-2.0.tar.gz'.
+
+    :param string A string containing macros that you want to be replaced
+    :param spec An optional spec file. If given, definitions in that spec
+    file will be used to replace macros.
+
+    :return A string where all macros in given input are substituted as good as possible.
+
+    """
+    if spec:
+        assert isinstance(spec, Spec)
+
+    def _is_conditional(macro: str) -> bool:
+        return macro.startswith("?") or macro.startswith("!")
+
+    def _test_conditional(macro: str) -> bool:
+        if macro[0] == "?":
+            return True
+        if macro[0] == "!":
+            return False
+        raise Exception("Given string is not a conditional macro")
+
+    def _macro_repl(match):
+        macro_name = match.group(1)
+        if _is_conditional(macro_name) and spec:
+            parts = macro_name[1:].split(sep=":", maxsplit=1)
+            assert len(parts) > 0
+            if _test_conditional(macro_name):  # ?
+                if hasattr(spec, parts[0]):
+                    if len(parts) == 2:
+                        return parts[1]
+                    else:
+                        return getattr(spec, parts[0], None)
+                else:
+                    return ""
+            else:  # !
+                if not hasattr(spec, parts[0]):
+                    if len(parts) == 2:
+                        return parts[1]
+                    else:
+                        return getattr(spec, parts[0], None)
+                else:
+                    return ""
+
+        if spec:
+            value = getattr(spec, macro_name, None)
+            if value:
+                return str(value)
+        return match.string[match.start():match.end()]
+
+    # Recursively expand macros
+    # Note: If macros are not defined in the spec file, this won't try to
+    # expand them.
+    while True:
+        try:
+            ret = re.sub(_macro_pattern, _macro_repl, string)
+            if ret != string:
+               string = ret
+               continue
+        except:
+            ret = ""
+        finally:   
+            return ret