Provide a way to specify external license file (#3932)

Create another tslint rule adf-enterprise-license

tools/tslint-rules/adfEnterpriseLicenseBannerRule.js

@@ -0,0 +1,46 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const path = require("path");
+const Lint = require("tslint");
+const minimatch = require("minimatch");
+const fs = require("fs");
+class Rule extends Lint.Rules.AbstractRule {
+    apply(sourceFile) {
+        return this.applyWithWalker(new ADFEnterpriseLicenseBannerRule(sourceFile, this.getOptions()));
+    }
+}
+Rule.metadata = {
+    ruleName: 'adf-enterprise-license-banner',
+    type: 'maintainability',
+    description: ``,
+    descriptionDetails: ``,
+    rationale: ``,
+    options: null,
+    optionsDescription: `Not configurable.`,
+    typescriptOnly: true,
+};
+Rule.FAILURE_STRING = 'Missing license header in this TypeScript ' +
+    'file Every TypeScript file of the library needs to have the Alfresco license banner at the top.';
+exports.Rule = Rule;
+class ADFEnterpriseLicenseBannerRule extends Lint.RuleWalker {
+    constructor(sourceFile, options) {
+        super(sourceFile, options);
+        const fileGlobs = options.ruleArguments;
+        this.licensePath = options.ruleArguments[1];
+        const relativeFilePath = path.relative(process.cwd(), sourceFile.fileName);
+        this._enabled = fileGlobs.some(p => minimatch(relativeFilePath, p));
+    }
+    visitSourceFile(sourceFile) {
+        if (!this._enabled) {
+            return;
+        }
+        const fileContent = sourceFile.getFullText();
+        const licenseBanner = fs.readFileSync(this.licensePath, 'utf8');
+        const licenseCommentPos = fileContent.indexOf(licenseBanner);
+        const tslintFix = Lint.Replacement.appendText(0, licenseBanner + '\n\n');
+        if (licenseCommentPos !== 0) {
+            return this.addFailureAt(0, 0, Rule.FAILURE_STRING, tslintFix);
+        }
+        super.visitSourceFile(sourceFile);
+    }
+}