create mac homebrew cask recipe for libreoffice lang pack

#!/usr/bin/env php
<?php

// Copyright (c) 2016  https://github.com/bunam.
// All rights reserved.
//
// Redistribution and use in source and binary forms are permitted
// provided that the above copyright notice and this paragraph are
// duplicated in all such forms and that any documentation,
// advertising materials, and other materials related to such
// distribution and use acknowledge that the software was developed
// by the <organization>. The name of the
// <organization> may not be used to endorse or promote products derived
// from this software without specific prior written permission.
// THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
// IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

// prupose : make homebrew cask recipes for all libreoffice languages in all in one script
// see http://brew.sh

// WIP : https://github.com/caskroom/homebrew-cask/pull/27193#pullrequestreview-10240273

// after run, exemple for testing  :  brew cask reinstall libreoffice libreoffice-language-pack --language=fr

// keep nowdoc !!
$LIBREOFFICE_LANGUAGE_ONE_TPL=<<<'END_OF_RUBY_TPL'
cask 'libreoffice-language-pack' do
  version '___VERSION____'
  ___ALL_SELECTIONS___
  # documentfoundation.org was verified as official when first introduced to the cask
  url "http://download.documentfoundation.org/libreoffice/stable/#{version}/mac/x86_64/LibreOffice_#{version}_MacOS_x86-64_langpack_#{language}.dmg"

  name 'LibreOffice language pack'
  homepage 'https://www.libreoffice.org/'
  gpg "#{url}.asc", key_id: 'c2839ecad9408fbe9531c3e9f434a1efafeeaea3'

  depends_on cask: 'libreoffice'

  preflight do
    system '/usr/bin/tar', '-C', "#{appdir}/LibreOffice.app/", '-xjf', "#{staged_path}/LibreOffice Language Pack.app/Contents/tarball.tar.bz2"
    system '/usr/bin/touch', "#{appdir}/LibreOffice.app/Contents/Resources/extensions"
  end
end
END_OF_RUBY_TPL;

function px_libreoffice_laguages_pack_make_list_and_sha256($LIBREOFFICE_VERSION,$SITE_BASE,$MATCH) {

    // get page
    $html= file_get_contents($SITE_BASE);
    if($html==false) die("Error getting : ".$SITE_BASE.chr(10)) ;

    // prepare for exploration
    $dom = new DOMDocument();
    $dom->loadHTML($html);
    $items = $dom->getElementsByTagName('a');

    // all languages
    $languages=array() ;

    foreach($items as $value) {
        $attrs = $value->attributes;
        //echo $value->nodeValue ."|".$attrs->getNamedItem('href')->nodeValue . chr(10);
        $testMATCHStart=substr($value->nodeValue,0,$MATCH['length']) ;
        $testMATCHEnd=substr($value->nodeValue,-4) ;
        $testKeep=substr($value->nodeValue,$MATCH['length'],-4) ;
        if($testMATCHStart==$MATCH['str'] && $testMATCHEnd==".dmg"){
            // echo $value->nodeValue ."|".$testKeep.chr(10) ;
            // dedouble !
            $languages[$testKeep]=true ;
        }
    }

    // get SHA256
    foreach($languages as $key => &$sha256 ){
        //echo $key.chr(10);
        $url = $SITE_BASE.$MATCH['str'].$key.'.dmg.sha256' ;
        echo "Getting sha256 ".$url.chr(10);
        sleep(1) ;
        $html_sha256 = file_get_contents($url);
        if($html_sha256==false) die("Error getting : ".$SITE_BASE.chr(10)) ;
        $sha256 = substr($html_sha256,0,strpos($html_sha256," "));
    }

    //print_r($languages) ;
    // facility for debug
    return file_put_contents(dirname(__FILE__)."/laguages.sha256.ser",serialize($languages)) ;
}

function px_libreoffice_laguages_pack_make_cask_one_recipie($languages, $LIBREOFFICE_LANGUAGE_ONE_TPL, $LIBREOFFICE_VERSION, $PATH){

    $all_selections="" ;

    foreach($languages as $language => $sha256 ){

        if($language!='ca-valencia') {
            // mini templating

            // defaulting
            $default=" ";
            if($language=="en-GB") {
                $default= ", default: true " ;
            }
# <- keep here
$all_selections .= "
  language '".$language."'".$default."do
    sha256 '".$sha256."'
    '".$language."'
  end
" ;
        }
    }

    $newTPL=$LIBREOFFICE_LANGUAGE_ONE_TPL ;
    $search  = array('___VERSION____', '___ALL_SELECTIONS___');
    $replace = array($LIBREOFFICE_VERSION , $all_selections);
    $filename=$PATH.'/libreoffice-language-pack.rb' ;
    echo 'Writing '.$filename.chr(10) ;
    file_put_contents($filename, str_replace($search, $replace, $newTPL));

}

# main

if(!isset($argv[1])) {
    die("You must provide an argument as a version number ex : 5.2.3") ;
}

$LIBREOFFICE_VERSION=$argv[1] ;
$SITE_BASE='http://download.documentfoundation.org/libreoffice/stable/'.$LIBREOFFICE_VERSION.'/mac/x86_64/' ;
$MATCH['str']="LibreOffice_".$LIBREOFFICE_VERSION."_MacOS_x86-64_langpack_" ;
$MATCH['length']=strlen($MATCH['str']) ;

// where is brew ???
exec('brew config | grep HOMEBREW_REPOSITORY',$output,$ret) ;
if($ret==0) {
    $HOMEBREW_REPOSITORY = substr($output[0],strpos($output[0]," ")+1) ;
    $HOMEBREW_CASK_REPOSITORY = $HOMEBREW_REPOSITORY."/Library/Taps/caskroom/homebrew-cask/Casks" ;
    if(!is_dir($HOMEBREW_CASK_REPOSITORY)) {
        die("homebrew : cask not there ? : ".$HOMEBREW_CASK_REPOSITORY) ;
    }
}else{
    die("homebrew not installed ?") ;
}

px_libreoffice_laguages_pack_make_list_and_sha256($LIBREOFFICE_VERSION,$SITE_BASE,$MATCH) ;

$languages = unserialize(file_get_contents(dirname(__FILE__)."/laguages.sha256.ser")) ;

px_libreoffice_laguages_pack_make_cask_one_recipie($languages, $LIBREOFFICE_LANGUAGE_ONE_TPL, $LIBREOFFICE_VERSION, $HOMEBREW_CASK_REPOSITORY) ;


echo "All finished".chr(10) ;

?>