Proyectos de Subversion Moodle

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// GNU General Public License for more details.
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// GNU General Public License for more details.
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//
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//
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// You should have received a copy of the GNU General Public License
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// You should have received a copy of the GNU General Public License
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// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
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// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
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/**
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 * Custom Moodle helper collection for mustache.
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 *
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 * @copyright  2019 Ryan Wyllie <ryan@moodle.com>
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 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 */
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namespace core\output;
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namespace core\output;
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/**
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/**
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 * Custom Moodle helper collection for mustache.
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 * Custom Moodle helper collection for mustache.
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 *
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 *
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 * @package core
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 * @copyright  2019 Ryan Wyllie <ryan@moodle.com>
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 * @copyright  2019 Ryan Wyllie <ryan@moodle.com>
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 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 */
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class mustache_helper_collection extends \Mustache_HelperCollection {
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 */
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class mustache_helper_collection extends \Mustache_HelperCollection {
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    /**
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    /**
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     * @var string[] Names of helpers that aren't allowed to be called within other helpers.
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     * @var string[] Names of helpers that aren't allowed to be called within other helpers.
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    public function add($name, $helper) {
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    public function add($name, $helper) {
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        $disallowedlist = $this->disallowednestedhelpers;
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        $disallowedlist = $this->disallowednestedhelpers;
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        if (is_callable($helper) && !empty($disallowedlist)) {
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        if (is_callable($helper) && !empty($disallowedlist)) {
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            $helper = function($source, \Mustache_LambdaHelper $lambdahelper) use ($helper, $disallowedlist) {
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            $helper = function ($source, \Mustache_LambdaHelper $lambdahelper) use ($helper, $disallowedlist) {
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                // Temporarily override the disallowed helpers to return nothing
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                // Temporarily override the disallowed helpers to return nothing
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        foreach ($names as $name) {
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        foreach ($names as $name) {
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            if ($this->has($name)) {
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            if ($this->has($name)) {
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                $function = $this->get($name);
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                $function = $this->get($name);
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                // Null out the helper. Must call parent::add here to avoid
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                // Null out the helper. Must call parent::add here to avoid
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                // a recursion problem.
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                // a recursion problem.
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                parent::add($name, function() {
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                parent::add($name, function () {
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                    return '';
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                    return '';
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                });
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                });
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                $disabledhelpers[$name] = $function;
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                $disabledhelpers[$name] = $function;
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        $endtoken = \Mustache_Tokenizer::T_END_SECTION;
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        $endtoken = \Mustache_Tokenizer::T_END_SECTION;
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        if ($endtoken == '/') {
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        if ($endtoken == '/') {
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            $endtoken = '\/';
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            $endtoken = '\/';
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        }
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        }
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        $regexes = array_map(function($name) use ($starttoken, $endtoken) {
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        $regexes = array_map(function ($name) use ($starttoken, $endtoken) {
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            // We only strip out the name of the helper (excluding delimiters)
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            // We only strip out the name of the helper (excluding delimiters)
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            // the user is able to change the delimeters on a per template
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            // the user is able to change the delimeters on a per template
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            // basis so they may not be curly braces.
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            // basis so they may not be curly braces.
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            return '/\s*' . $starttoken . '\s*'. $name . '\W+.*' . $endtoken . '\s*' . $name . '\s*/';
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            return '/\s*' . $starttoken . '\s*' . $name . '\W+.*' . $endtoken . '\s*' . $name . '\s*/';
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        }, $disallowedlist);
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        }, $disallowedlist);
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        // This will strip out unwanted helpers from the $source string
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        // This will strip out unwanted helpers from the $source string
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        // before providing it to the original helper function.
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        // before providing it to the original helper function.
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        // E.g.
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        // E.g.
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        // Before:
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        // Before:
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        // "core, move, {{#js}} some nasty JS hack {{/js}}"
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        // "core, move, {{#js}} some nasty JS hack {{/js}}"
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        // After:
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        // After:
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        // "core, move, {{}}".
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        // "core, move, {{}}".
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        return preg_replace_callback($regexes, function() {
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        return preg_replace_callback($regexes, function () {
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            return '';
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            return '';
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        }, $string);
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        }, $string);