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

##########################################################################
# OpenLP - Open Source Lyrics Projection                                 #
# ---------------------------------------------------------------------- #
# Copyright (c) 2008-2022 OpenLP Developers                              #
# ---------------------------------------------------------------------- #
# 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 <https://www.gnu.org/licenses/>. #
##########################################################################
import datetime

from PyQt5 import QtGui, QtWidgets

from openlp.core.common.i18n import UiStrings, translate
from openlp.core.lib.ui import create_button, create_button_box
from openlp.core.ui.icons import UiIcons


class UiAboutDialog(object):
    """
    The actual GUI widgets for the About form.
    """

    def setup_ui(self, about_dialog):
        """
        Set up the UI for the dialog.

        :param about_dialog: The QDialog object to set up.
        """
        about_dialog.setObjectName('about_dialog')
        about_dialog.setWindowIcon(UiIcons().main_icon)
        self.base_layout = QtWidgets.QVBoxLayout(about_dialog)
        self.base_layout.setContentsMargins(0, 0, 0, 0)
        self.base_layout.setSpacing(0)
        self.base_layout.setObjectName('base_layout')
        self.logo_label = QtWidgets.QLabel(about_dialog)
        self.logo_label.setPixmap(QtGui.QPixmap(':/graphics/openlp-about-logo.png'))
        self.logo_label.setStyleSheet('background-color: #fff')
        self.logo_label.setMargin(8)
        self.logo_label.setObjectName('logo_label')
        self.base_layout.addWidget(self.logo_label)
        self.line = QtWidgets.QFrame(about_dialog)
        self.line.setFrameShape(QtWidgets.QFrame.HLine)
        self.line.setFrameShadow(QtWidgets.QFrame.Sunken)
        self.line.setObjectName('line')
        self.base_layout.addWidget(self.line)
        self.about_dialog_layout = QtWidgets.QVBoxLayout()
        self.about_dialog_layout.setContentsMargins(8, 8, 8, 8)
        self.about_dialog_layout.setSpacing(8)
        self.about_dialog_layout.setObjectName('about_dialog_layout')
        self.base_layout.addLayout(self.about_dialog_layout)
        self.about_notebook = QtWidgets.QTabWidget(about_dialog)
        self.about_notebook.setObjectName('about_notebook')
        self.about_tab = QtWidgets.QWidget()
        self.about_tab.setObjectName('about_tab')
        self.about_tab_layout = QtWidgets.QVBoxLayout(self.about_tab)
        self.about_tab_layout.setObjectName('about_tab_layout')
        self.about_text_edit = QtWidgets.QTextBrowser(self.about_tab)
        self.about_text_edit.setObjectName('about_text_edit')
        self.about_tab_layout.addWidget(self.about_text_edit)
        self.about_notebook.addTab(self.about_tab, '')
        self.credits_tab = QtWidgets.QWidget()
        self.credits_tab.setObjectName('credits_tab')
        self.credits_tab_layout = QtWidgets.QVBoxLayout(self.credits_tab)
        self.credits_tab_layout.setObjectName('credits_tab_layout')
        self.credits_text_edit = QtWidgets.QTextBrowser(self.credits_tab)
        self.credits_text_edit.setObjectName('credits_text_edit')
        self.credits_tab_layout.addWidget(self.credits_text_edit)
        self.about_notebook.addTab(self.credits_tab, '')
        self.license_tab = QtWidgets.QWidget()
        self.license_tab.setObjectName('license_tab')
        self.license_tab_layout = QtWidgets.QVBoxLayout(self.license_tab)
        self.license_tab_layout.setObjectName('license_tab_layout')
        self.license_text_edit = QtWidgets.QTextBrowser(self.license_tab)
        self.license_text_edit.setObjectName('license_text_edit')
        self.license_tab_layout.addWidget(self.license_text_edit)
        self.about_notebook.addTab(self.license_tab, '')
        self.about_dialog_layout.addWidget(self.about_notebook)
        self.contribute_button = create_button(None, 'contribute_button', icon=UiIcons().volunteer)
        self.button_box = create_button_box(about_dialog, 'button_box', ['close'], [self.contribute_button])
        self.about_dialog_layout.addWidget(self.button_box)
        self.retranslate_ui(about_dialog)
        self.about_notebook.setCurrentIndex(0)

    def retranslate_ui(self, about_dialog):
        """
        Dynamically translate the UI.

        :param about_dialog: The QDialog object to translate
        """
        about_dialog.setWindowTitle('{about} OpenLP'.format(about=UiStrings().About))
        self.about_text_edit.setHtml(
            translate('OpenLP.AboutForm',
                      '<p>OpenLP {{version}}{{revision}} - Open Source Lyrics Projection<br>'
                      'Copyright {crs} 2004-{yr} OpenLP Developers</p>'
                      '<p>Find out more about OpenLP: <a href="https://openlp.org/">https://openlp.org/</a></p>'
                      '<p>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.</p>'
                      '<p>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.</p>'
                      '<p>You should have received a copy of the GNU General Public License '
                      'along with this program.  If not, see <a href="https://www.gnu.org/licenses/">'
                      'https://www.gnu.org/licenses/</a>.</p>').format(crs='\xa9', yr=datetime.date.today().year))
        self.about_notebook.setTabText(self.about_notebook.indexOf(self.about_tab), UiStrings().About)
        developers = translate('OpenLP.AboutForm',
                               'OpenLP is written and maintained by volunteers all over the world in their spare '
                               'time. If you would like to see this project succeed, please consider contributing to '
                               'it by clicking the "contribute" button below.')
        built_with = translate('OpenLP.AboutForm', 'OpenLP would not be possible without the following software '
                               'libraries:')
        build_tech = ('<ul>'
                      '<li><a href="https://www.python.org/">Python</a> (PSFL)</li>'
                      '<li><a href="https://www.qt.io">Qt5</a> (GPL3/LGPL3)</li>'
                      '<li><a href="https://www.riverbankcomputing.co.uk/software/pyqt/intro">PyQt5</a> (GPL3)</li>'
                      '<li><a href="https://github.com/ActiveState/appdirs">appdirs</a> (MIT)</li>'
                      '<li><a href="https://alembic.sqlalchemy.org/en/latest/">Alembic</a> (MIT)</li>'
                      '<li><a href="https://www.crummy.com/software/BeautifulSoup/">BeautifulSoup 4</a> (MIT)</li>'
                      '<li><a href="https://github.com/chardet/chardet">chardet</a> (LGPL)</li>'
                      '<li><a href="https://fontawesome.com">Font Awesome</a> (CC-BY 4.0, OFL 1.1, MIT)</li>'
                      '<li><a href="https://lxml.de">lxml</a> (BSD)</li>'
                      '<li><a href="https://www.makotemplates.org">Mako templates</a> (MIT)</li>'
                      '<li><a href="https://mupdf.com/">MuPDF</a> (AGPL)</li>'
                      '<li><a href="https://github.com/pymupdf/PyMuPDF">PyMuPDF</a> (AGPL3+/GPL3+)</li>'
                      '<li><a href="https://mediaarea.net/en/MediaInfo">MediaInfo</a> (BSD-style)</li>'
                      '<li><a href="https://pymediainfo.readthedocs.io">pymediainfo</a> (MIT)</li>'
                      '<li><a href="https://github.com/rfk/pyenchant/">pyenchant</a> (LGPL)</li>'
                      '<li><a href="https://gitlab.com/tgc-dk/pysword">pysword</a> (MIT)</li>'
                      '<li><a href="https://pytest.org/">pytest</a> (MIT)</li>'
                      '<li><a href="https://github.com/jstasiak/python-zeroconf">python-zeroconf</a> (LGPL)</li>'
                      '<li><a href="https://github.com/ColinDuquesnoy/QDarkStyleSheet">QDarkStyle</a> (MIT)</li>'
                      '<li><a href="https://github.com/spyder-ide/qtawesome">QtAwesome</a> (MIT)</li>'
                      '<li><a href="https://2.python-requests.org/en/master/">Requests</a> (Apache 2.0)</li>'
                      '<li><a href="https://www.sqlalchemy.org">SQLAlchemy</a> (MIT)</li>'
                      '<li><a href="https://www.videolan.org/vlc/">VLC</a> (LGPL)</li>'
                      '<li><a href="https://wiki.videolan.org/PythonBinding">Python bindings for VLC</a> (LGPL)</li>'
                      '<li><a href="https://github.com/Pylons/waitress">Waitress</a> (ZPL)</li>'
                      '<li><a href="https://github.com/aaugustin/websockets">websockets</a> (BSD)</li>'
                      '<li><a href="https://webob.org/">WebOb</a> (MIT)</li>'
                      '<li><a href="https://mkleehammer.github.io/pyodbc/">pyodbc</a> (MIT)</li>'
                      '<li><a href="http://initd.org/psycopg/">psycopg2</a> (LGPL3+)</li>'
                      '</ul>')
        final_credit = translate('OpenLP.AboutForm', '<h3>Final credit:</h3>'
                                 '<blockquote><p>For God so loved the world that He gave His one and only Son, so that '
                                 'whoever believes in Him will not perish but inherit eternal life.</p><p>John 3:16</p>'
                                 '</blockquote>'
                                 '<p>And last but not least, final credit goes to God our Father, for sending His Son '
                                 'to die on the cross, setting us free from sin. We bring this software to you for '
                                 'free because He has set us free.</p>')
        self.credits_text_edit.setHtml('<p>{developers}</p><p>{built_with}</p>{build_tech}<p>{final_credit}</p>'.format(
            developers=developers, built_with=built_with, build_tech=build_tech, final_credit=final_credit))
        self.about_notebook.setTabText(self.about_notebook.indexOf(self.credits_tab),
                                       translate('OpenLP.AboutForm', 'Credits'))
        license = ('<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"'
                   '    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">'
                   ''
                   '<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">'
                   '<head>'
                   ' <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />'
                   ' <title>GNU General Public License v3.0 - GNU Project - Free Software Foundation (FSF)</title>'
                   ' <link rel="alternate" type="application/rdf+xml"'
                   '       href="http://www.gnu.org/licenses/gpl-3.0.rdf" /> '
                   '</head>'
                   '<body>'
                   '<h3 style="text-align: center;">GNU GENERAL PUBLIC LICENSE</h3>'
                   '<p style="text-align: center;">Version 3, 29 June 2007</p>'
                   '<p>Copyright &copy; 2007 Free Software Foundation, Inc.'
                   ' &lt;<a href="https://fsf.org/">https://fsf.org/</a>&gt;</p><p>'
                   ' Everyone is permitted to copy and distribute verbatim copies'
                   ' of this license document, but changing it is not allowed.</p>'
                   '<h3><a name="preamble"></a>Preamble</h3>'
                   '<p>The GNU General Public License is a free, copyleft license for '
                   'software and other kinds of works.</p>'
                   '<p>The licenses for most software and other practical works are designed '
                   'to take away your freedom to share and change the works.  By contrast, '
                   'the GNU General Public License is intended to guarantee your freedom to '
                   'share and change all versions of a program--to make sure it remains free '
                   'software for all its users.  We, the Free Software Foundation, use the '
                   'GNU General Public License for most of our software; it applies also to '
                   'any other work released this way by its authors.  You can apply it to '
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                   '<p>When we speak of free software, we are referring to freedom, not '
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                   'have the freedom to distribute copies of free software (and charge for '
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                   '<p>Developers that use the GNU GPL protect your rights with two steps: '
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                   '    clear directions next to the object code saying where to find the '
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                   '    Corresponding Source, you remain obligated to ensure that it is '
                   '    available for as long as needed to satisfy these requirements.</li>'
                   '<li>e) Convey the object code using peer-to-peer transmission, provided '
                   '    you inform other peers where the object code and Corresponding '
                   '    Source of the work are being offered to the general public at no '
                   '    charge under subsection 6d.</li>'
                   '</ul>'
                   '<p>A separable portion of the object code, whose source code is excluded '
                   'from the Corresponding Source as a System Library, need not be '
                   'included in conveying the object code work.</p>'
                   '<p>A &ldquo;User Product&rdquo; is either (1) a &ldquo;consumer product&rdquo;, which means any '
                   'tangible personal property which is normally used for personal, family, '
                   'or household purposes, or (2) anything designed or sold for incorporation '
                   'into a dwelling.  In determining whether a product is a consumer product, '
                   'doubtful cases shall be resolved in favor of coverage.  For a particular '
                   'product received by a particular user, &ldquo;normally used&rdquo; refers to a '
                   'typical or common use of that class of product, regardless of the status '
                   'of the particular user or of the way in which the particular user '
                   'actually uses, or expects or is expected to use, the product.  A product '
                   'is a consumer product regardless of whether the product has substantial '
                   'commercial, industrial or non-consumer uses, unless such uses represent '
                   'the only significant mode of use of the product.</p>'
                   '<p>&ldquo;Installation Information&rdquo; for a User Product means any methods, '
                   'procedures, authorization keys, or other information required to install '
                   'and execute modified versions of a covered work in that User Product from '
                   'a modified version of its Corresponding Source.  The information must '
                   'suffice to ensure that the continued functioning of the modified object '
                   'code is in no case prevented or interfered with solely because '
                   'modification has been made.</p>'
                   '<p>If you convey an object code work under this section in, or with, or '
                   'specifically for use in, a User Product, and the conveying occurs as '
                   'part of a transaction in which the right of possession and use of the '
                   'User Product is transferred to the recipient in perpetuity or for a '
                   'fixed term (regardless of how the transaction is characterized), the '
                   'Corresponding Source conveyed under this section must be accompanied '
                   'by the Installation Information.  But this requirement does not apply '
                   'if neither you nor any third party retains the ability to install '
                   'modified object code on the User Product (for example, the work has '
                   'been installed in ROM).</p>'
                   '<p>The requirement to provide Installation Information does not include a '
                   'requirement to continue to provide support service, warranty, or updates '
                   'for a work that has been modified or installed by the recipient, or for '
                   'the User Product in which it has been modified or installed.  Access to a '
                   'network may be denied when the modification itself materially and '
                   'adversely affects the operation of the network or violates the rules and '
                   'protocols for communication across the network.</p>'
                   '<p>Corresponding Source conveyed, and Installation Information provided, '
                   'in accord with this section must be in a format that is publicly '
                   'documented (and with an implementation available to the public in '
                   'source code form), and must require no special password or key for '
                   'unpacking, reading or copying.</p>'
                   '<h4><a name="section7"></a>7. Additional Terms.</h4>'
                   '<p>&ldquo;Additional permissions&rdquo; are terms that supplement the terms of this '
                   'License by making exceptions from one or more of its conditions. '
                   'Additional permissions that are applicable to the entire Program shall '
                   'be treated as though they were included in this License, to the extent '
                   'that they are valid under applicable law.  If additional permissions '
                   'apply only to part of the Program, that part may be used separately '
                   'under those permissions, but the entire Program remains governed by '
                   'this License without regard to the additional permissions.</p>'
                   '<p>When you convey a copy of a covered work, you may at your option '
                   'remove any additional permissions from that copy, or from any part of '
                   'it.  (Additional permissions may be written to require their own '
                   'removal in certain cases when you modify the work.)  You may place '
                   'additional permissions on material, added by you to a covered work, '
                   'for which you have or can give appropriate copyright permission.</p>'
                   '<p>Notwithstanding any other provision of this License, for material you '
                   'add to a covered work, you may (if authorized by the copyright holders of '
                   'that material) supplement the terms of this License with terms:</p>'
                   '<ul>'
                   '<li>a) Disclaiming warranty or limiting liability differently from the '
                   '    terms of sections 15 and 16 of this License; or</li>'
                   '<li>b) Requiring preservation of specified reasonable legal notices or '
                   '    author attributions in that material or in the Appropriate Legal '
                   '    Notices displayed by works containing it; or</li>'
                   '<li>c) Prohibiting misrepresentation of the origin of that material, or '
                   '    requiring that modified versions of such material be marked in '
                   '    reasonable ways as different from the original version; or</li>'
                   '<li>d) Limiting the use for publicity purposes of names of licensors or '
                   '    authors of the material; or</li>'
                   '<li>e) Declining to grant rights under trademark law for use of some '
                   '    trade names, trademarks, or service marks; or</li>'
                   '<li>f) Requiring indemnification of licensors and authors of that '
                   '    material by anyone who conveys the material (or modified versions of '
                   '    it) with contractual assumptions of liability to the recipient, for '
                   '    any liability that these contractual assumptions directly impose on '
                   '    those licensors and authors.</li>'
                   '</ul>'
                   '<p>All other non-permissive additional terms are considered &ldquo;further '
                   'restrictions&rdquo; within the meaning of section 10.  If the Program as you '
                   'received it, or any part of it, contains a notice stating that it is '
                   'governed by this License along with a term that is a further '
                   'restriction, you may remove that term.  If a license document contains '
                   'a further restriction but permits relicensing or conveying under this '
                   'License, you may add to a covered work material governed by the terms '
                   'of that license document, provided that the further restriction does '
                   'not survive such relicensing or conveying.</p>'
                   '<p>If you add terms to a covered work in accord with this section, you '
                   'must place, in the relevant source files, a statement of the '
                   'additional terms that apply to those files, or a notice indicating '
                   'where to find the applicable terms.</p>'
                   '<p>Additional terms, permissive or non-permissive, may be stated in the '
                   'form of a separately written license, or stated as exceptions; '
                   'the above requirements apply either way.</p>'
                   '<h4><a name="section8"></a>8. Termination.</h4>'
                   '<p>You may not propagate or modify a covered work except as expressly '
                   'provided under this License.  Any attempt otherwise to propagate or '
                   'modify it is void, and will automatically terminate your rights under '
                   'this License (including any patent licenses granted under the third '
                   'paragraph of section 11).</p>'
                   '<p>However, if you cease all violation of this License, then your '
                   'license from a particular copyright holder is reinstated (a)'
                   'provisionally, unless and until the copyright holder explicitly and '
                   'finally terminates your license, and (b) permanently, if the copyright '
                   'holder fails to notify you of the violation by some reasonable means '
                   'prior to 60 days after the cessation.</p>'
                   '<p>Moreover, your license from a particular copyright holder is '
                   'reinstated permanently if the copyright holder notifies you of the '
                   'violation by some reasonable means, this is the first time you have '
                   'received notice of violation of this License (for any work) from that '
                   'copyright holder, and you cure the violation prior to 30 days after '
                   'your receipt of the notice.</p>'
                   '<p>Termination of your rights under this section does not terminate the '
                   'licenses of parties who have received copies or rights from you under '
                   'this License.  If your rights have been terminated and not permanently '
                   'reinstated, you do not qualify to receive new licenses for the same '
                   'material under section 10.</p>'
                   '<h4><a name="section9"></a>9. Acceptance Not Required for Having Copies.</h4>'
                   '<p>You are not required to accept this License in order to receive or '
                   'run a copy of the Program.  Ancillary propagation of a covered work '
                   'occurring solely as a consequence of using peer-to-peer transmission '
                   'to receive a copy likewise does not require acceptance.  However, '
                   'nothing other than this License grants you permission to propagate or '
                   'modify any covered work.  These actions infringe copyright if you do '
                   'not accept this License.  Therefore, by modifying or propagating a '
                   'covered work, you indicate your acceptance of this License to do so.</p>'
                   '<h4><a name="section10"></a>10. Automatic Licensing of Downstream Recipients.</h4>'
                   '<p>Each time you convey a covered work, the recipient automatically '
                   'receives a license from the original licensors, to run, modify and '
                   'propagate that work, subject to this License.  You are not responsible '
                   'for enforcing compliance by third parties with this License.</p>'
                   '<p>An &ldquo;entity transaction&rdquo; is a transaction transferring control of an '
                   'organization, or substantially all assets of one, or subdividing an '
                   'organization, or merging organizations.  If propagation of a covered '
                   'work results from an entity transaction, each party to that '
                   'transaction who receives a copy of the work also receives whatever '
                   'licenses to the work the party\'s predecessor in interest had or could '
                   'give under the previous paragraph, plus a right to possession of the '
                   'Corresponding Source of the work from the predecessor in interest, if '
                   'the predecessor has it or can get it with reasonable efforts.</p>'
                   '<p>You may not impose any further restrictions on the exercise of the '
                   'rights granted or affirmed under this License.  For example, you may '
                   'not impose a license fee, royalty, or other charge for exercise of '
                   'rights granted under this License, and you may not initiate litigation '
                   '(including a cross-claim or counterclaim in a lawsuit) alleging that '
                   'any patent claim is infringed by making, using, selling, offering for '
                   'sale, or importing the Program or any portion of it.</p>'
                   '<h4><a name="section11"></a>11. Patents.</h4>'
                   '<p>A &ldquo;contributor&rdquo; is a copyright holder who authorizes use under this '
                   'License of the Program or a work on which the Program is based.  The '
                   'work thus licensed is called the contributor\'s &ldquo;contributor version&rdquo;.</p>'
                   '<p>A contributor\'s &ldquo;essential patent claims&rdquo; are all patent claims '
                   'owned or controlled by the contributor, whether already acquired or '
                   'hereafter acquired, that would be infringed by some manner, permitted '
                   'by this License, of making, using, or selling its contributor version, '
                   'but do not include claims that would be infringed only as a '
                   'consequence of further modification of the contributor version.  For '
                   'purposes of this definition, &ldquo;control&rdquo; includes the right to grant '
                   'patent sublicenses in a manner consistent with the requirements of '
                   'this License.</p>'
                   '<p>Each contributor grants you a non-exclusive, worldwide, royalty-free '
                   'patent license under the contributor\'s essential patent claims, to '
                   'make, use, sell, offer for sale, import and otherwise run, modify and '
                   'propagate the contents of its contributor version.</p>'
                   '<p>In the following three paragraphs, a &ldquo;patent license&rdquo; is any express '
                   'agreement or commitment, however denominated, not to enforce a patent '
                   '(such as an express permission to practice a patent or covenant not to '
                   'sue for patent infringement).  To &ldquo;grant&rdquo; such a patent license to a '
                   'party means to make such an agreement or commitment not to enforce a '
                   'patent against the party.</p>'
                   '<p>If you convey a covered work, knowingly relying on a patent license, '
                   'and the Corresponding Source of the work is not available for anyone '
                   'to copy, free of charge and under the terms of this License, through a '
                   'publicly available network server or other readily accessible means, '
                   'then you must either (1) cause the Corresponding Source to be so '
                   'available, or (2) arrange to deprive yourself of the benefit of the '
                   'patent license for this particular work, or (3) arrange, in a manner '
                   'consistent with the requirements of this License, to extend the patent '
                   'license to downstream recipients.  &ldquo;Knowingly relying&rdquo; means you have '
                   'actual knowledge that, but for the patent license, your conveying the '
                   'covered work in a country, or your recipient\'s use of the covered work '
                   'in a country, would infringe one or more identifiable patents in that '
                   'country that you have reason to believe are valid.</p>'
                   '<p>If, pursuant to or in connection with a single transaction or '
                   'arrangement, you convey, or propagate by procuring conveyance of, a '
                   'covered work, and grant a patent license to some of the parties '
                   'receiving the covered work authorizing them to use, propagate, modify '
                   'or convey a specific copy of the covered work, then the patent license '
                   'you grant is automatically extended to all recipients of the covered '
                   'work and works based on it.</p>'
                   '<p>A patent license is &ldquo;discriminatory&rdquo; if it does not include within '
                   'the scope of its coverage, prohibits the exercise of, or is '
                   'conditioned on the non-exercise of one or more of the rights that are '
                   'specifically granted under this License.  You may not convey a covered '
                   'work if you are a party to an arrangement with a third party that is '
                   'in the business of distributing software, under which you make payment '
                   'to the third party based on the extent of your activity of conveying '
                   'the work, and under which the third party grants, to any of the '
                   'parties who would receive the covered work from you, a discriminatory '
                   'patent license (a) in connection with copies of the covered work '
                   'conveyed by you (or copies made from those copies), or (b) primarily '
                   'for and in connection with specific products or compilations that '
                   'contain the covered work, unless you entered into that arrangement, '
                   'or that patent license was granted, prior to 28 March 2007.</p>'
                   '<p>Nothing in this License shall be construed as excluding or limiting '
                   'any implied license or other defenses to infringement that may '
                   'otherwise be available to you under applicable patent law.</p>'
                   '<h4><a name="section12"></a>12. No Surrender of Others\' Freedom.</h4>'
                   '<p>If conditions are imposed on you (whether by court order, agreement or '
                   'otherwise) that contradict the conditions of this License, they do not '
                   'excuse you from the conditions of this License.  If you cannot convey a '
                   'covered work so as to satisfy simultaneously your obligations under this '
                   'License and any other pertinent obligations, then as a consequence you may '
                   'not convey it at all.  For example, if you agree to terms that obligate you '
                   'to collect a royalty for further conveying from those to whom you convey '
                   'the Program, the only way you could satisfy both those terms and this '
                   'License would be to refrain entirely from conveying the Program.</p>'
                   '<h4><a name="section13"></a>13. Use with the GNU Affero General Public License.</h4>'
                   '<p>Notwithstanding any other provision of this License, you have '
                   'permission to link or combine any covered work with a work licensed '
                   'under version 3 of the GNU Affero General Public License into a single '
                   'combined work, and to convey the resulting work.  The terms of this '
                   'License will continue to apply to the part which is the covered work, '
                   'but the special requirements of the GNU Affero General Public License, '
                   'section 13, concerning interaction through a network will apply to the '
                   'combination as such.</p>'
                   '<h4><a name="section14"></a>14. Revised Versions of this License.</h4>'
                   '<p>The Free Software Foundation may publish revised and/or new versions of '
                   'the GNU General Public License from time to time.  Such new versions will '
                   'be similar in spirit to the present version, but may differ in detail to '
                   'address new problems or concerns.</p>'
                   '<p>Each version is given a distinguishing version number.  If the '
                   'Program specifies that a certain numbered version of the GNU General '
                   'Public License &ldquo;or any later version&rdquo; applies to it, you have the '
                   'option of following the terms and conditions either of that numbered '
                   'version or of any later version published by the Free Software '
                   'Foundation.  If the Program does not specify a version number of the '
                   'GNU General Public License, you may choose any version ever published '
                   'by the Free Software Foundation.</p>'
                   '<p>If the Program specifies that a proxy can decide which future '
                   'versions of the GNU General Public License can be used, that proxy\'s '
                   'public statement of acceptance of a version permanently authorizes you '
                   'to choose that version for the Program.</p>'
                   '<p>Later license versions may give you additional or different '
                   'permissions.  However, no additional obligations are imposed on any '
                   'author or copyright holder as a result of your choosing to follow a '
                   'later version.</p>'
                   '<h4><a name="section15"></a>15. Disclaimer of Warranty.</h4>'
                   '<p>THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY '
                   'APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT '
                   'HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM &ldquo;AS IS&rdquo; WITHOUT WARRANTY '
                   'OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, '
                   'THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR '
                   'PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM '
                   'IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF '
                   'ALL NECESSARY SERVICING, REPAIR OR CORRECTION.</p>'
                   '<h4><a name="section16"></a>16. Limitation of Liability.</h4>'
                   '<p>IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING '
                   'WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS '
                   'THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY '
                   'GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE '
                   'USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF '
                   'DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD '
                   'PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), '
                   'EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF '
                   'SUCH DAMAGES.</p>'
                   '<h4><a name="section17"></a>17. Interpretation of Sections 15 and 16.</h4>'
                   '<p>If the disclaimer of warranty and limitation of liability provided '
                   'above cannot be given local legal effect according to their terms, '
                   'reviewing courts shall apply local law that most closely approximates '
                   'an absolute waiver of all civil liability in connection with the '
                   'Program, unless a warranty or assumption of liability accompanies a '
                   'copy of the Program in return for a fee.</p>'
                   '<p>END OF TERMS AND CONDITIONS</p>'
                   '<h3><a name="howto"></a>How to Apply These Terms to Your New Programs</h3>'
                   '<p>If you develop a new program, and you want it to be of the greatest '
                   'possible use to the public, the best way to achieve this is to make it '
                   'free software which everyone can redistribute and change under these terms.</p>'
                   '<p>To do so, attach the following notices to the program.  It is safest '
                   'to attach them to the start of each source file to most effectively '
                   'state the exclusion of warranty; and each file should have at least '
                   'the &ldquo;copyright&rdquo; line and a pointer to where the full notice is found.</p>'
                   '<pre>    &lt;one line to give the program\'s name and a brief idea of what it does.&gt;<br>'
                   '    Copyright (C) &lt;year&gt;  &lt;name of author&gt;<br>'
                   '    This program is free software: you can redistribute it and/or modify<br>'
                   '    it under the terms of the GNU General Public License as published by<br>'
                   '    the Free Software Foundation, either version 3 of the License, or<br>'
                   '    (at your option) any later version.<br>'
                   '<br>'
                   '    This program is distributed in the hope that it will be useful,<br>'
                   '    but WITHOUT ANY WARRANTY; without even the implied warranty of<br>'
                   '    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the<br>'
                   '    GNU General Public License for more details.<br>'
                   '<br>'
                   '    You should have received a copy of the GNU General Public License<br>'
                   '    along with this program.  If not, see &lt;https://www.gnu.org/licenses/&gt;. '
                   '</pre>'
                   '<p>Also add information on how to contact you by electronic and paper mail.</p>'
                   '<p>If the program does terminal interaction, make it output a short '
                   'notice like this when it starts in an interactive mode:</p>'
                   '<pre>    &lt;program&gt;  Copyright (C) &lt;year&gt;  &lt;name of author&gt;<br>'
                   '    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w`.<br>'
                   '    This is free software, and you are welcome to redistribute it<br>'
                   '    under certain conditions; type `show c` for details. '
                   '</pre>'
                   '<p>The hypothetical commands `show w` and `show c` should show the appropriate '
                   'parts of the General Public License.  Of course, your program\'s commands '
                   'might be different; for a GUI interface, you would use an &ldquo;about box&rdquo;.</p>'
                   '<p>You should also get your employer (if you work as a programmer) or school, '
                   'if any, to sign a &ldquo;copyright disclaimer&rdquo; for the program, if necessary. '
                   'For more information on this, and how to apply and follow the GNU GPL, see '
                   '&lt;<a href="https://www.gnu.org/licenses/">https://www.gnu.org/licenses/</a>&gt;.</p>'
                   '<p>The GNU General Public License does not permit incorporating your program '
                   'into proprietary programs.  If your program is a subroutine library, you '
                   'may consider it more useful to permit linking proprietary applications with '
                   'the library.  If this is what you want to do, use the GNU Lesser General '
                   'Public License instead of this License.  But first, please read '
                   '&lt;<a href="https://www.gnu.org/licenses/why-not-lgpl.html">'
                   'https://www.gnu.org/licenses/why-not-lgpl.html</a>&gt;.</p>'
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