LibreY/engines/text.php

<?php
    function fetch_search_results($query, $page) {
        global $config;

        $mh = curl_multi_init();

        $engine=$config->preferred_engines['text'];
        if (is_null($engine))
            $engine = "google";
        $query_parts = explode(" ", $query);
        $last_word_query = end($query_parts);
        if (substr($query, 0, 1) == "!" || substr($last_word_query, 0, 1) == "!")
            check_ddg_bang($query);

        if ($engine == "google") {
            require "engines/google/text.php";
            $engine_request = new GoogleRequest($query, $mh, $config);
        }

        if ($engine == "duckduckgo") {
            require "engines/duckduckgo/text.php";
            $engine_request = new DuckDuckGoRequest($query, $mh, $config);
        }

        require "engines/special.php";
        $special_request = get_special_search_request($query, $page, $mh, $config);

        $running = null;

        do {
            curl_multi_exec($mh, $running);
        } while ($running);

        if (curl_getinfo($engine_request->ch)['http_code'] != '200') 
        {
            require "engines/librex/text.php";
            return get_librex_results($query, $page);
        }

        $results = $engine_request->get_results();

        $special_result = $special_request->get_results();
        if ($special_result)
            $results = array_merge(array($special_result), $results);

        return $results;
    }

    function print_search_results($results) {

        if (empty($results))
            return;

        $special = $results[0];

        if (array_key_exists("did_you_mean", $special)) 
        {
            $didyoumean = $special["did_you_mean"];
            $new_url = "/search.php?q="  . urlencode($didyoumean);
            echo "<p class=\"did-you-mean\">Did you mean ";
            echo "<a href=\"$new_url\">$didyoumean</a>";
            echo "?</p>";
        }

        if (array_key_exists("special_response", $special)) 
        {
            $response = $special["special_response"]["response"];
            $source = $special["special_response"]["source"];

            echo "<p class=\"special-result-container\">";
            if (array_key_exists("image", $special["special_response"]))
            {
                $image_url = $special["special_response"]["image"];
                echo "<img src=\"image_proxy.php?url=$image_url\">";
            }
            echo $response;
            if ($source)
                echo "<a href=\"$source\" target=\"_blank\">$source</a>";
            echo "</p>";
        }

        echo "<div class=\"text-result-container\">";

        foreach($results as $result)
        {
            if (!array_key_exists("title", $result))
                continue;

            $title = $result["title"];
            $url = $result["url"];
            $base_url = $result["base_url"];
            $description = $result["description"];

            echo "<div class=\"text-result-wrapper\">";
            echo "<a href=\"$url\">";
            echo "$base_url";
            echo "<h2>$title</h2>";
            echo "</a>";
            echo "<span>$description</span>";
            echo "</div>";
        }

        echo "</div>";
    }

    function check_ddg_bang($query)
    {

        $bangs_json = file_get_contents("static/misc/ddg_bang.json");
        $bangs = json_decode($bangs_json, true);

        if (substr($query, 0, 1) == "!")
            $search_word = substr(explode(" ", $query)[0], 1);
        else
            $search_word = substr(end(explode(" ", $query)), 1);
        
        $bang_url = null;

        foreach($bangs as $bang)
        {
            if ($bang["t"] == $search_word)
            {
                $bang_url = $bang["u"];
                break;
            }
        }

        if ($bang_url)
        {
            $bang_query_array = explode("!" . $search_word, $query);
            $bang_query = trim(implode("", $bang_query_array));

            $request_url = str_replace("{{{s}}}", str_replace('%26quot%3B','%22', urlencode($bang_query)), $bang_url);
            $request_url = check_for_privacy_frontend($request_url);

            header("Location: " . $request_url);
            die();
        }
    }

?>