htmlmetaparser/dist/oembed.js

A `htmlparser2` handler for parsing rich metadata from HTML. Includes HTML metadata, JSON-LD, RDFa, microdata, OEmbed, Twitter cards and AppLinks.

"use strict";
var OEmbedProviders = (function () {
    function OEmbedProviders(providers) {
        this.matchers = [];
        for (var _i = 0, providers_1 = providers; _i < providers_1.length; _i++) {
            var provider = providers_1[_i];
            this.add(provider);
        }
    }
    OEmbedProviders.prototype.add = function (provider) {
        this.matchers.push(new OEmbedMatch(provider));
    };
    OEmbedProviders.prototype.match = function (url) {
        for (var _i = 0, _a = this.matchers; _i < _a.length; _i++) {
            var matcher = _a[_i];
            var res = matcher.match(url);
            if (res) {
                return res;
            }
        }
        return;
    };
    return OEmbedProviders;
}());
exports.OEmbedProviders = OEmbedProviders;
var OEmbedMatch = (function () {
    function OEmbedMatch(provider) {
        var _this = this;
        this.routes = [];
        for (var _i = 0, _a = provider.endpoints; _i < _a.length; _i++) {
            var endpoint = _a[_i];
            if (typeof endpoint.url === 'string') {
                this.routes.push({
                    matches: Array.isArray(endpoint.schemes) ?
                        endpoint.schemes.map(function (x) { return _this.schemeToRegExp(x); }) :
                        [this.urlToRegExp(provider.provider_url)],
                    url: endpoint.url.replace(/\?.*$/, ''),
                    formats: endpoint.formats
                });
            }
        }
    }
    OEmbedMatch.prototype.schemeToRegExp = function (scheme) {
        return new RegExp("^" + this.escapeRegExp(scheme) + "$");
    };
    OEmbedMatch.prototype.urlToRegExp = function (url) {
        return new RegExp("^" + this.escapeRegExp(url));
    };
    OEmbedMatch.prototype.escapeRegExp = function (str) {
        return str
            .replace(/[|\\{}()[\]^$+*?.]/g, '\\$&')
            .replace(/^http:/, 'https?:')
            .replace(/\\\*/, '.+');
    };
    OEmbedMatch.prototype.match = function (url) {
        for (var _i = 0, _a = this.routes; _i < _a.length; _i++) {
            var route = _a[_i];
            for (var _b = 0, _c = route.matches; _b < _c.length; _b++) {
                var match = _c[_b];
                if (match.test(url)) {
                    return this.formatResult(route.url, url, route.formats);
                }
            }
        }
        return;
    };
    OEmbedMatch.prototype.formatResult = function (oembedUrl, url, formats) {
        var type = formats == null ? 'json' : (formats.indexOf('json') > -1 ? 'json' : formats[0]);
        return {
            href: oembedUrl + "?type=" + encodeURIComponent(type) + "&url=" + encodeURIComponent(url),
            type: "application/" + type + "+oembed"
        };
    };
    return OEmbedMatch;
}());
exports.OEmbedMatch = OEmbedMatch;
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