[ADF-579] - move license check in webpack (#1859)

* move license check in webpack

* fix exclusion check header

* different headers

ng2-components/config/assets/license_header.txt

@@ -1,14 +1,16 @@
-@license
-Copyright 2016 Alfresco Software, Ltd.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
+/*!
+ * @license
+ * Copyright 2016 Alfresco Software, Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */

ng2-components/config/assets/license_header_add.txt

@@ -0,0 +1,14 @@
+@license
+Copyright 2016 Alfresco Software, Ltd.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.

ng2-components/config/custom-loaders/license-check.js

@@ -0,0 +1,67 @@
+var path = require('path');
+var loaderUtils = require('loader-utils');
+var fs = require('fs');
+
+var licenseFileUtf8Store = undefined;
+
+function readLicenseHeaderFile(licenseFilePath) {
+    if (licenseFileUtf8Store) {
+        return licenseFileUtf8Store;
+    }
+
+    if (fs.existsSync(licenseFilePath)) {
+        licenseFileUtf8Store = fs.readFileSync(licenseFilePath, 'utf8').split(/\r?\n/);
+        return licenseFileUtf8Store;
+    }
+
+    throw new Error('The license header file path is wrong ' + licenseFilePath);
+}
+
+function isFileEmpty(fileContents) {
+    return fileContents.toString('utf8').trim() === '';
+}
+
+function readCurrentFile(fileContent) {
+    return fileContent.toString('utf8').split(/\r?\n/);
+}
+
+function isLicenseHeaderPresent(currentFileContent, licenseFilePath) {
+    if (!isFileEmpty(currentFileContent)) {
+        var currentFileUtf8 = readCurrentFile(currentFileContent),
+            licenseFileUtf8 = readLicenseHeaderFile(licenseFilePath);
+            skipStrict = 0;
+
+        if(currentFileUtf8[0] === '"use strict";' ) {
+            skipStrict = 1;
+        }
+
+        for (var i = skipStrict; i < licenseFileUtf8.length; i++) {
+            if (currentFileUtf8[i + skipStrict] !== licenseFileUtf8[i]) {
+                return false;
+            }
+        }
+    }
+    return true;
+}
+
+function report(hasHeader, emitter, filename) {
+  if (hasHeader) return;
+  emitter('Missing license header file : ' + filename);
+}
+
+function licenseCheck(webpackInstance, input, options) {
+    var isLicensePresent =  isLicenseHeaderPresent(input, options.licenseFile);
+
+    var emitter = options.emitErrors ? webpackInstance.emitError : webpackInstance.emitWarning;
+
+    report(isLicensePresent, emitter, webpackInstance.resourcePath);
+}
+
+module.exports = function(input, map) {
+  this.cacheable && this.cacheable();
+  var callback = this.async();
+
+  var options = loaderUtils.getOptions(this);
+  licenseCheck(this, input, options);
+  callback(null, input, map);
+};

ng2-components/config/webpack.common.js

@@ -7,7 +7,8 @@ module.exports = {
 
     resolveLoader: {
         alias: {
-            "file-multi-loader": path.resolve(__dirname, "./custom-loaders/file-loader-multi")
+            "file-multi-loader": path.resolve(__dirname, "./custom-loaders/file-loader-multi"),
+            "license-check": path.resolve(__dirname, "./custom-loaders/license-check")
         }
     },
 
@@ -65,6 +66,15 @@ module.exports = {
                 test: /\.css$/,
                 loader: ['to-string-loader', 'css-loader'],
                 exclude: [/node_modules/, /bundles/, /dist/, /demo/]
+            },{
+                enforce: 'pre',
+                test: /\.ts$/,
+                loader: 'license-check',
+                options: {
+                    emitErrors: true,
+                    licenseFile: path.resolve(__dirname, './assets/license_header.txt')
+                },
+                exclude: [/node_modules/, /bundles/, /dist/, /demo/, /rendering-queue.services.ts/ ],
             },
             {
                 test: /\.(png|jpe?g|gif|svg|woff|woff2|ttf|eot|ico)$/,
@@ -95,7 +105,7 @@ module.exports = {
     plugins: [
         new webpack.NoEmitOnErrorsPlugin(),
 
-        new webpack.BannerPlugin(fs.readFileSync(path.resolve(__dirname, './assets/license_header.txt'), 'utf8')),
+        new webpack.BannerPlugin(fs.readFileSync(path.resolve(__dirname, './assets/license_header_add.txt'), 'utf8')),
 
         // Workaround for angular/angular#11580
         new webpack.ContextReplacementPlugin(