ng2-translate/src/translate.parser.js

An implementation of angular translate for Angular 2

var __extends = (this && this.__extends) || function (d, b) {
    for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
    function __() { this.constructor = d; }
    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
import { Injectable } from "@angular/core";
import { isDefined } from "./util";
export var TranslateParser = (function () {
    function TranslateParser() {
    }
    return TranslateParser;
}());
export var DefaultTranslateParser = (function (_super) {
    __extends(DefaultTranslateParser, _super);
    function DefaultTranslateParser() {
        _super.apply(this, arguments);
        this.templateMatcher = /{{\s?([^{}\s]*)\s?}}/g;
    }
    DefaultTranslateParser.prototype.interpolate = function (expr, params) {
        var _this = this;
        if (typeof expr !== 'string' || !params) {
            return expr;
        }
        return expr.replace(this.templateMatcher, function (substring, b) {
            var r = _this.getValue(params, b);
            return isDefined(r) ? r : substring;
        });
    };
    DefaultTranslateParser.prototype.getValue = function (target, key) {
        var keys = key.split('.');
        key = '';
        do {
            key += keys.shift();
            if (isDefined(target) && isDefined(target[key]) && (typeof target[key] === 'object' || !keys.length)) {
                target = target[key];
                key = '';
            }
            else if (!keys.length) {
                target = undefined;
            }
            else {
                key += '.';
            }
        } while (keys.length);
        return target;
    };
    DefaultTranslateParser.decorators = [
        { type: Injectable },
    ];
    /** @nocollapse */
    DefaultTranslateParser.ctorParameters = function () { return []; };
    return DefaultTranslateParser;
}(TranslateParser));