Ryan Wyllie
134 lines
4.6 KiB
PHP
134 lines
4.6 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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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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/**
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* This file is serving the javascript source map.
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*
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* @package core
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* @copyright 2019 Ryan Wyllie
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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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// Disable moodle specific debug messages and any errors in output,
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// comment out when debugging or better look into error log!
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define('NO_DEBUG_DISPLAY', true);
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// We need just the values from config.php and minlib.php.
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define('ABORT_AFTER_CONFIG', true);
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require('../config.php'); // This stops immediately at the beginning of lib/setup.php.
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require_once("$CFG->dirroot/lib/jslib.php");
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require_once("$CFG->dirroot/lib/classes/requirejs.php");
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$slashargument = min_get_slash_argument();
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if (!$slashargument) {
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// The above call to min_get_slash_argument should always work.
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die('Invalid request');
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}
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$slashargument = ltrim($slashargument, '/');
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if (substr_count($slashargument, '/') < 1) {
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header('HTTP/1.0 404 not found');
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die('Slash argument must contain both a revision and a file path');
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}
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// Split into revision and module name.
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list($rev, $file) = explode('/', $slashargument, 2);
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$rev = min_clean_param($rev, 'INT');
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$file = '/' . min_clean_param($file, 'SAFEPATH');
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// Only load js files from the js modules folder from the components.
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$jsfiles = array();
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list($unused, $component, $module) = explode('/', $file, 3);
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// No subdirs allowed - only flat module structure please.
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if (strpos('/', $module) !== false) {
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die('Invalid module');
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}
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// Some (huge) modules are better loaded lazily (when they are used). If we are requesting
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// one of these modules, only return the one module, not the combo.
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$lazysuffix = "-lazy.js";
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$lazyload = (strpos($module, $lazysuffix) !== false);
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if ($lazyload) {
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$jsfiles = core_requirejs::find_one_amd_module($component, $module, false);
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} else {
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$jsfiles = core_requirejs::find_all_amd_modules(false);
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}
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// Create the empty source map.
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$map = [
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'version' => 3,
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'file' => $CFG->wwwroot . '/lib/requirejs.php/' . $slashargument,
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'sections' => []
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];
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$line = 0;
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// Sort the files to ensure consistent ordering for source map generation.
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asort($jsfiles);
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foreach ($jsfiles as $modulename => $jsfile) {
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$shortfilename = str_replace($CFG->dirroot, '', $jsfile);
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$srcfilename = str_replace('/amd/build/', '/amd/src/', $shortfilename);
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$srcfilename = str_replace('.min.js', '.js', $srcfilename);
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$mapfile = $jsfile . '.map';
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if (file_exists($mapfile)) {
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$mapdata = file_get_contents($mapfile);
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$mapdata = json_decode($mapdata, true);
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unset($mapdata['sourcesContent']);
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$mapdata['sources'][0] = $CFG->wwwroot . $srcfilename;
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$map['sections'][] = [
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'offset' => [
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'line' => $line,
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'column' => 0
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],
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'map' => $mapdata
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];
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$js = file_get_contents($jsfile);
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// Remove source map link.
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$js = preg_replace('~//# sourceMappingURL.*$~s', '', $js);
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} else {
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// No sourcemap for this section which means we will have returned the original
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// source file to the browser. We have to provide an empty source map to
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// ensure that this section is not treated as part of the previous map.
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$map['sections'][] = [
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'offset' => [
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'line' => $line,
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'column' => 0,
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],
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'map' => [
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'version' => 3,
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'file' => $shortfilename,
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'sources' => [$CFG->wwwroot . $srcfilename],
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'sourcesContent' => [null],
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'names' => [],
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'mappings' => ''
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]
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];
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// Load the original source file to calculate the number of lines we'll need to
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// skip forward for the next source map section.
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$js = file_get_contents($CFG->dirroot . $srcfilename);
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}
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$js = rtrim($js);
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$line += substr_count($js, "\n") + 1;
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}
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js_send_uncached(json_encode($map), 'jssourcemap.php');
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