MDL-74511 core: Add phpcs config generator

.gitignore

@@ -54,3 +54,4 @@ moodle-plugin-ci.phar
 /admin/tool/componentlibrary/docs
 /admin/tool/componentlibrary/hugo/site/data/my-index.json
 .hugo_build.lock
+.phpcs.xml

.grunt/tasks/ignorefiles.js

@@ -21,6 +21,43 @@
  */
 
 module.exports = grunt => {
+
+    /**
+     * Generate the PHPCS configuration.
+     *
+     * @param {Object} thirdPartyPaths
+     */
+    const phpcsIgnore = (thirdPartyPaths) => {
+        const {toXML} = require('jstoxml');
+
+        const config = {
+            _name: 'ruleset',
+            _attrs: {
+                name: "MoodleCore",
+            },
+            _content: [
+                {
+                    rule: {
+                        _attrs: {
+                            ref: 'moodle',
+                        },
+                    },
+                },
+            ],
+        };
+
+        thirdPartyPaths.forEach(library => {
+            config._content.push({
+                'exclude-pattern': library,
+            });
+        });
+
+        grunt.file.write('.phpcs.xml', toXML(config, {
+            header: true,
+            indent: '  ',
+        }) + "\n");
+    };
+
     /**
      * Generate ignore files (utilising thirdpartylibs.xml data)
      */
@@ -53,6 +90,8 @@ module.exports = grunt => {
             'admin/tool/componentlibrary/hugo/dist/css/docs.css',
         ].concat(thirdPartyPaths);
         grunt.file.write('.stylelintignore', stylelintIgnores.join('\n') + '\n');
+
+        phpcsIgnore(thirdPartyPaths);
     };
 
     grunt.registerTask('ignorefiles', 'Generate ignore files for linters', handler);

package.json

@@ -37,6 +37,7 @@
     "jsdoc": "^3.6.10",
     "jsdoc-to-markdown": "^7.1.1",
     "jshint": "^2.13.4",
+    "jstoxml": "^3.2.3",
     "node-sass": "^7.0.1",
     "npm-run-all": "^4.1.5",
     "rollup-plugin-terser": "^7.0.2",