Initial commit

src/parsers/html.parser.ts

@@ -0,0 +1,25 @@
+import { ParserInterface } from './parser.interface';
+
+export class HtmlParser implements ParserInterface {
+
+	public patterns = {
+		PipeSingleQuote: '{{\\s*\'((?:\\\\.|[^\'\\\\])*)\'\\s*\\|\\s*translate(:.*?)?\\s*}}',
+		PipeDoubleQuote: '{{\\s*"((?:\\\\.|[^"\\\\])*)"\\s*\\|\\s*translate(:.*?)?\\s*}}'
+	}
+
+	public process(contents: string): string[] {
+		let results: string[] = [];
+
+		for (let patternName in this.patterns) {
+			const regExp = new RegExp(this.patterns[patternName], 'g');
+
+			let matches;
+			while (matches = regExp.exec(contents)) {
+				results.push(matches[1]);
+			}
+		}
+
+		return results;
+	}
+
+}

src/parsers/parser.interface.ts

@@ -0,0 +1,5 @@
+export interface ParserInterface {
+
+	process(contents: string): string[];
+
+}

src/parsers/typescript.parser.ts

@@ -0,0 +1,60 @@
+import { ParserInterface } from './parser.interface';
+
+export class TypescriptParser implements ParserInterface {
+
+	public patterns = {
+		TranslateServiceMethodsSingleQuote: '{{TRANSLATE_SERVICE}}\.(?:get|instant)\\s*\\\(\\s*\'((?:\\\\.|[^\'\\\\])*)\\s*\'',
+		TranslateServiceMethodsDoubleQuote: '{{TRANSLATE_SERVICE}}\.(?:get|instant)\\s*\\\(\\s*"((?:\\\\.|[^"\\\\])*)\\s*"',
+	}
+
+	public process(contents: string): string[] {
+		let results: string[] = [];
+
+		const translateServiceVar = this._extractTranslateServiceVar(contents);
+		if (!translateServiceVar) {
+			return [];
+		}
+
+		for (let patternName in this.patterns) {
+			const regExp = this._createRegExp(patternName, {
+				TRANSLATE_SERVICE: translateServiceVar
+			});
+
+			let matches;
+			while (matches = regExp.exec(contents)) {
+				results.push(matches[1]);
+			}
+		}
+
+		return results;
+	}
+
+	/**
+	 * Create regular expression, replacing placeholders with real values
+	 */
+	protected _createRegExp(patternName: string, replaceVars: {} = {}): RegExp {
+		if (!this.patterns.hasOwnProperty(patternName)) {
+			throw new Error('Invalid pattern name');
+		}
+
+		let pattern = this.patterns[patternName];
+		Object.keys(replaceVars).forEach(key => {
+			pattern = pattern.replace('{{' + key + '}}', replaceVars[key]);
+		});
+
+		return new RegExp(pattern, 'gi');
+	}
+
+	/**
+	 * Extract name of TranslateService variable for use in patterns
+	 */
+	protected _extractTranslateServiceVar(contents: string): string {
+		const matches = contents.match(/([a-z0-9_]+)\s*:\s*TranslateService/i)
+		if (matches === null) {
+			return '';
+		}
+
+		return matches[1];
+	}
+
+}