Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle 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.

//

// Moodle 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 Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**

 * Definition of classes used by language customization admin tool

 *

 * @package    tool

 * @subpackage customlang

 * @copyright  2010 David Mudrak <david@moodle.com>

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

defined('MOODLE_INTERNAL') || die();

/**

 * Provides various utilities to be used by the plugin

 *

 * All the public methods here are static ones, this class can not be instantiated

 */

class tool_customlang_utils {

    /**

     * Rough number of strings that are being processed during a full checkout.

     * This is used to estimate the progress of the checkout.

     */

    const ROUGH_NUMBER_OF_STRINGS = 32000;

    /** @var array cache of {@link self::list_components()} results */

    private static $components = null;

    /**

     * This class can not be instantiated

     */

    private function __construct() {

    }

    /**

     * Returns a list of all components installed on the server

     *

     * @return array (string)legacyname => (string)frankenstylename

     */

    public static function list_components() {

        if (self::$components === null) {

            $list['moodle'] = 'core';

            $coresubsystems = core_component::get_core_subsystems();

            ksort($coresubsystems); // Should be but just in case.

            foreach ($coresubsystems as $name => $location) {

                $list[$name] = 'core_' . $name;

            }

            $plugintypes = core_component::get_plugin_types();

            foreach ($plugintypes as $type => $location) {

                $pluginlist = core_component::get_plugin_list($type);

                foreach ($pluginlist as $name => $ununsed) {

                    if ($type == 'mod') {

                        // Plugin names are now automatically validated.

                        $list[$name] = $type . '_' . $name;

                    } else {

                        $list[$type . '_' . $name] = $type . '_' . $name;

                    }

                }

            }

            self::$components = $list;

        }

        return self::$components;

    }

    /**

     * Updates the translator database with the strings from files

     *

     * This should be executed each time before going to the translation page

     *

     * @param string $lang language code to checkout

     * @param progress_bar $progressbar optionally, the given progress bar can be updated

     */

    public static function checkout($lang, progress_bar $progressbar = null) {

        global $DB, $CFG;

        require_once("{$CFG->libdir}/adminlib.php");

        // For behat executions we are going to load only a few components in the

        // language customisation structures. Using the whole "en" langpack is

        // too much slow (leads to Selenium 30s timeouts, especially on slow

        // environments) and we don't really need the whole thing for tests. So,

        // apart from escaping from the timeouts, we are also saving some good minutes

        // in tests. See MDL-70014 and linked issues for more info.

        $behatneeded = ['core', 'core_langconfig', 'tool_customlang'];

        // make sure that all components are registered

        $current = $DB->get_records('tool_customlang_components', null, 'name', 'name,version,id');

        foreach (self::list_components() as $component) {

            // Filter out unwanted components when running behat.

            if (defined('BEHAT_SITE_RUNNING') && !in_array($component, $behatneeded)) {

                continue;

            }

            if (empty($current[$component])) {

                $record = new stdclass();

                $record->name = $component;

                if (!$version = get_component_version($component)) {

                    $record->version = null;

                } else {

                    $record->version = $version;

                }

                $DB->insert_record('tool_customlang_components', $record);

            } else if ($version = get_component_version($component)) {

                if (is_null($current[$component]->version) or ($version > $current[$component]->version)) {

                    $DB->set_field('tool_customlang_components', 'version', $version, array('id' => $current[$component]->id));

                }

            }

        }

        unset($current);

        // initialize the progress counter - stores the number of processed strings

        $done = 0;

        $strinprogress = get_string('checkoutinprogress', 'tool_customlang');

        // reload components and fetch their strings

        $stringman  = get_string_manager();

        $components = $DB->get_records('tool_customlang_components');

        foreach ($components as $component) {

            $sql = "SELECT stringid, id, lang, componentid, original, master, local, timemodified, timecustomized, outdated, modified

                      FROM {tool_customlang} s

                     WHERE lang = ? AND componentid = ?

                  ORDER BY stringid";

            $current = $DB->get_records_sql($sql, array($lang, $component->id));

            $english = $stringman->load_component_strings($component->name, 'en', true, true);

            if ($lang == 'en') {

                $master =& $english;

            } else {

                $master = $stringman->load_component_strings($component->name, $lang, true, true);

            }

            $local = $stringman->load_component_strings($component->name, $lang, true, false);

            foreach ($english as $stringid => $stringoriginal) {

                $stringmaster = isset($master[$stringid]) ? $master[$stringid] : null;

                $stringlocal = isset($local[$stringid]) ? $local[$stringid] : null;

                $now = time();

                if (!is_null($progressbar)) {

                    $done++;

                    $donepercent = floor(min($done, self::ROUGH_NUMBER_OF_STRINGS) / self::ROUGH_NUMBER_OF_STRINGS * 100);

                    $progressbar->update_full($donepercent, $strinprogress);

                }

                if (isset($current[$stringid])) {

                    $needsupdate     = false;

                    $currentoriginal = $current[$stringid]->original;

                    $currentmaster   = $current[$stringid]->master;

                    $currentlocal    = $current[$stringid]->local;

                    if ($currentoriginal !== $stringoriginal or $currentmaster !== $stringmaster) {

                        $needsupdate = true;

                        $current[$stringid]->original       = $stringoriginal;

                        $current[$stringid]->master         = $stringmaster;

                        $current[$stringid]->timemodified   = $now;

                        $current[$stringid]->outdated       = 1;

                    }

                    if ($stringmaster !== $stringlocal) {

                        $needsupdate = true;

                        $current[$stringid]->local          = $stringlocal;

                        $current[$stringid]->timecustomized = $now;

                    } else if (isset($currentlocal) && $stringlocal !== $currentlocal) {

                        // If local string has been removed, we need to remove also the old local value from DB.

                        $needsupdate = true;

                        $current[$stringid]->local          = null;

                        $current[$stringid]->timecustomized = $now;

                    }

                    if ($needsupdate) {

                        $DB->update_record('tool_customlang', $current[$stringid]);

                        continue;

                    }

                } else {

                    $record                 = new stdclass();

                    $record->lang           = $lang;

                    $record->componentid    = $component->id;

                    $record->stringid       = $stringid;

                    $record->original       = $stringoriginal;

                    $record->master         = $stringmaster;

                    $record->timemodified   = $now;

                    $record->outdated       = 0;

                    if ($stringmaster !== $stringlocal) {

                        $record->local          = $stringlocal;

                        $record->timecustomized = $now;

                    } else {

                        $record->local          = null;

                        $record->timecustomized = null;

                    }

                    $DB->insert_record('tool_customlang', $record);

                }

            }

        }

        if (!is_null($progressbar)) {

            $progressbar->update_full(100, get_string('checkoutdone', 'tool_customlang'));

        }

    }

    /**

     * Exports the translator database into disk files

     *

     * @param mixed $lang language code

     */

    public static function checkin($lang) {

        global $DB, $USER, $CFG;

        require_once($CFG->libdir.'/filelib.php');

        if ($lang !== clean_param($lang, PARAM_LANG)) {

            return false;

        }

        list($insql, $inparams) = $DB->get_in_or_equal(self::list_components());

        // Get all customized strings from updated valid components.

        $sql = "SELECT s.*, c.name AS component

                  FROM {tool_customlang} s

                  JOIN {tool_customlang_components} c ON s.componentid = c.id

                 WHERE s.lang = ?

                       AND (s.local IS NOT NULL OR s.modified = 1)

                       AND c.name $insql

              ORDER BY componentid, stringid";

        array_unshift($inparams, $lang);

        $strings = $DB->get_records_sql($sql, $inparams);

        $files = array();

        foreach ($strings as $string) {

            if (!is_null($string->local)) {

                $files[$string->component][$string->stringid] = $string->local;

            }

        }

        fulldelete(self::get_localpack_location($lang));

        foreach ($files as $component => $strings) {

            self::dump_strings($lang, $component, $strings);

        }

        $DB->set_field_select('tool_customlang', 'modified', 0, 'lang = ?', array($lang));

        $sm = get_string_manager();

        $sm->reset_caches();

    }

    /**

     * Returns full path to the directory where local packs are dumped into

     *

     * @param string $lang language code

     * @return string full path

     */

    public static function get_localpack_location($lang) {

        global $CFG;

        return $CFG->langlocalroot.'/'.$lang.'_local';

    }

    /**

     * Writes strings into a local language pack file

     *

     * @param string $component the name of the component

     * @param array $strings

     * @return void

     */

    protected static function dump_strings($lang, $component, $strings) {

        global $CFG;

        if ($lang !== clean_param($lang, PARAM_LANG)) {

            throw new moodle_exception('Unable to dump local strings for non-installed language pack .'.s($lang));

        }

        if ($component !== clean_param($component, PARAM_COMPONENT)) {

            throw new coding_exception('Incorrect component name');

        }

        if (!$filename = self::get_component_filename($component)) {

            throw new moodle_exception('Unable to find the filename for the component '.s($component));

        }

        if ($filename !== clean_param($filename, PARAM_FILE)) {

            throw new coding_exception('Incorrect file name '.s($filename));

        }

        list($package, $subpackage) = core_component::normalize_component($component);

        $packageinfo = " * @package    $package";

        if (!is_null($subpackage)) {

            $packageinfo .= "\n * @subpackage $subpackage";

        }

        $filepath = self::get_localpack_location($lang);

        $filepath = $filepath.'/'.$filename;

        if (!is_dir(dirname($filepath))) {

            check_dir_exists(dirname($filepath));

        }

        if (!$f = fopen($filepath, 'w')) {

            throw new moodle_exception('Unable to write '.s($filepath));

        }

        fwrite($f, <<<EOF

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle 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.

//

// Moodle 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 Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**

 * Local language pack from $CFG->wwwroot

 *

$packageinfo

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

defined('MOODLE_INTERNAL') || die();

EOF

        );

        foreach ($strings as $stringid => $text) {

            if ($stringid !== clean_param($stringid, PARAM_STRINGID)) {

                debugging('Invalid string identifier '.s($stringid));

                continue;

            }

            fwrite($f, '$string[\'' . $stringid . '\'] = ');

            fwrite($f, var_export($text, true));

            fwrite($f, ";\n");

        }

        fclose($f);

        @chmod($filepath, $CFG->filepermissions);

    }

    /**

     * Returns the name of the file where the component's local strings should be exported into

     *

     * @param string $component normalized name of the component, eg 'core' or 'mod_workshop'

     * @return string|boolean filename eg 'moodle.php' or 'workshop.php', false if not found

     */

    protected static function get_component_filename($component) {

        $return = false;

        foreach (self::list_components() as $legacy => $normalized) {

            if ($component === $normalized) {

                $return = $legacy.'.php';

                break;

            }

        }

        return $return;

    }

    /**

     * Returns the number of modified strings checked out in the translator

     *

     * @param string $lang language code

     * @return int

     */

    public static function get_count_of_modified($lang) {

        global $DB;

        return $DB->count_records('tool_customlang', array('lang'=>$lang, 'modified'=>1));

    }

    /**

     * Saves filter data into a persistant storage such as user session

     *

     * @see self::load_filter()

     * @param stdclass $data filter values

     * @param stdclass $persistant storage object

     */

    public static function save_filter(stdclass $data, stdclass $persistant) {

        if (!isset($persistant->tool_customlang_filter)) {

            $persistant->tool_customlang_filter = array();

        }

        foreach ($data as $key => $value) {

            if ($key !== 'submit') {

                $persistant->tool_customlang_filter[$key] = serialize($value);

            }

        }

    }

    /**

     * Loads the previously saved filter settings from a persistent storage

     *

     * @see self::save_filter()

     * @param stdclass $persistant storage object

     * @return stdclass filter data

     */

    public static function load_filter(stdclass $persistant) {

        $data = new stdclass();

        if (isset($persistant->tool_customlang_filter)) {

            foreach ($persistant->tool_customlang_filter as $key => $value) {

                $data->{$key} = unserialize($value);

            }

        }

        return $data;

    }

}

/**

 * Represents the action menu of the tool

 */

class tool_customlang_menu implements renderable {

    /** @var menu items */

    protected $items = array();

    public function __construct(array $items = array()) {

        global $CFG;

        foreach ($items as $itemkey => $item) {

            $this->add_item($itemkey, $item['title'], $item['url'], empty($item['method']) ? 'post' : $item['method']);

        }

    }

    /**

     * Returns the menu items

     *

     * @return array (string)key => (object)[->(string)title ->(moodle_url)url ->(string)method]

     */

    public function get_items() {

        return $this->items;

    }

    /**

     * Adds item into the menu

     *

     * @param string $key item identifier

     * @param string $title localized action title

     * @param moodle_url $url action handler

     * @param string $method form method

     */

    public function add_item($key, $title, moodle_url $url, $method) {

        if (isset($this->items[$key])) {

            throw new coding_exception('Menu item already exists');

        }

        if (empty($title) or empty($key)) {

            throw new coding_exception('Empty title or item key not allowed');

        }

        $item = new stdclass();

        $item->title = $title;

        $item->url = $url;

        $item->method = $method;

        $this->items[$key] = $item;

    }

}

/**

 * Represents the translation tool

 */

class tool_customlang_translator implements renderable {

    /** @var int number of rows per page */

    const PERPAGE = 100;

    /** @var int total number of the rows int the table */

    public $numofrows = 0;

    /** @var moodle_url */

    public $handler;

    /** @var string language code */

    public $lang;

    /** @var int page to display, starting with page 0 */

    public $currentpage = 0;

    /** @var array of stdclass strings to display */

    public $strings = array();

    /** @var stdclass */

    protected $filter;

    public function __construct(moodle_url $handler, $lang, $filter, $currentpage = 0) {

        global $DB;

        $this->handler      = $handler;

        $this->lang         = $lang;

        $this->filter       = $filter;

        $this->currentpage  = $currentpage;

        if (empty($filter) or empty($filter->component)) {

            // nothing to do

            $this->currentpage = 1;

            return;

        }

        list($insql, $inparams) = $DB->get_in_or_equal($filter->component, SQL_PARAMS_NAMED);

        $csql = "SELECT COUNT(*)";

        $fsql = "SELECT s.*, c.name AS component";

        $sql  = "  FROM {tool_customlang_components} c

                   JOIN {tool_customlang} s ON s.componentid = c.id

                  WHERE s.lang = :lang

                        AND c.name $insql";

        $params = array_merge(array('lang' => $lang), $inparams);

        if (!empty($filter->customized)) {

            $sql .= "   AND s.local IS NOT NULL";

        }

        if (!empty($filter->modified)) {

            $sql .= "   AND s.modified = 1";

        }

        if (!empty($filter->stringid)) {

            $sql .= "   AND s.stringid = :stringid";

            $params['stringid'] = $filter->stringid;

        }

        if (!empty($filter->substring)) {

            $sql .= "   AND (".$DB->sql_like('s.original', ':substringoriginal', false)." OR

                             ".$DB->sql_like('s.master', ':substringmaster', false)." OR

                             ".$DB->sql_like('s.local', ':substringlocal', false).")";

            $params['substringoriginal'] = '%'.$filter->substring.'%';

            $params['substringmaster']   = '%'.$filter->substring.'%';

            $params['substringlocal']    = '%'.$filter->substring.'%';

        }

        if (!empty($filter->helps)) {

            $sql .= "   AND ".$DB->sql_like('s.stringid', ':help', false); //ILIKE

            $params['help'] = '%\_help';

        } else {

            $sql .= "   AND ".$DB->sql_like('s.stringid', ':link', false, true, true); //NOT ILIKE

            $params['link'] = '%\_link';

        }

        $osql = " ORDER BY c.name, s.stringid";

        $this->numofrows = $DB->count_records_sql($csql.$sql, $params);

        $this->strings = $DB->get_records_sql($fsql.$sql.$osql, $params, ($this->currentpage) * self::PERPAGE, self::PERPAGE);

    }

}