X-Git-Url: https://git.ao2.it/tweeper.git/blobdiff_plain/4835a2e8d2816eeed44d2e5b9ffe62be7d4572eb..ae19a2f4361fbac5cd4d393291c6c088265e9647:/tweeper.php?ds=sidebyside diff --git a/tweeper.php b/tweeper.php old mode 100755 new mode 100644 index 2e27a0d..bcc85fe --- a/tweeper.php +++ b/tweeper.php @@ -1,86 +1,173 @@ - * + +/** + * @file + * Tweeper - a Twitter to RSS web scraper. + * + * Copyright (C) 2013-2020 Antonio Ospite + * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. - * + * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * + * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ +require_once 'autoload.php'; + +use Tweeper\Tweeper; + date_default_timezone_set('UTC'); -class Tweeper { +/** + * Check if the script is being run from the command line. + */ +function is_cli() { + return (php_sapi_name() === "cli"); +} - private $USER_AGENT = "Mozilla/5.0 (Windows NT 6.1; rv:22.0) Gecko/20130405 Firefox/22.0"; +/** + * Show the script usage. + */ +function usage($argv) { + if (is_cli()) { + $usage = "{$argv[0]} [-e|-m <0|1>|-u <0|1>|-v <0|1>|-h|--help] \n"; + } + else { + $usage = htmlentities("{$_SERVER['SCRIPT_NAME']}?src_url=&generate_enclosure=<0|1>&show_usernames=<0|1>&show_multimedia=<0|1>&verbose_output=<0|1>"); + } - public function __construct($stylesheet) { - $stylesheet_contents = $this->get_contents($stylesheet); + return "usage: $usage"; +} - $xslDoc = new DOMDocument(); - $xslDoc->loadXML($stylesheet_contents); +/** + * Parse command line options. + */ +function parse_options_cli($argv, $argc) { + $options = [ + 'generate_enclosure' => FALSE, + 'show_usernames' => TRUE, + 'show_multimedia' => TRUE, + 'verbose_output' => TRUE, + ]; + + if ($argc < 2) { + return $options; + } - $this->xsltProcessor = new XSLTProcessor(); - $this->xsltProcessor->importStylesheet($xslDoc); + $cli_options = getopt("em:u:v:h", ["help"]); + foreach ($cli_options as $opt => $val) { + switch ($opt) { + case 'e': + $options['generate_enclosure'] = TRUE; + break; + + case 'm': + $ret = filter_var($val, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE); + if (NULL === $ret) { + fwrite(STDERR, "Invalid argument for the -m option.\n"); + fwrite(STDERR, usage($argv)); + exit(1); + } + $options['show_multimedia'] = $val; + break; + + case 'u': + $ret = filter_var($val, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE); + if (NULL === $ret) { + fwrite(STDERR, "Invalid argument for the -u option.\n"); + fwrite(STDERR, usage($argv)); + exit(1); + } + $options['show_usernames'] = $val; + break; + + case 'v': + $ret = filter_var($val, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE); + if (NULL === $ret) { + fwrite(STDERR, "Invalid argument for the -v option.\n"); + fwrite(STDERR, usage($argv)); + exit(1); + } + $options['verbose_output'] = $val; + break; + + case 'h': + case 'help': + echo usage($argv); + exit(0); + + default: + fwrite(STDERR, usage($argv)); + exit(1); + } } - private function get_contents($uri) { - # https://www.wjsams.com/c/docs/Wiki/Php-HowToSetUserAgentOnFileGetContents - $opts = array( - 'http' => array( - 'method' => "GET", - 'header' => join(array( - "Accept-language: en\r\n", - "User-Agent: {$this->USER_AGENT}\r\n" - )) - ) - ); - - $context = stream_context_create($opts); - $contents = file_get_contents($uri, false, $context); - return $contents; + // For now assume that the URL is the lest argument, in the future we could + // switch to PHP >= 7.1 and use the $optind argument of getopt(). + $options['src_url'] = array_pop($argv); + + return $options; +} + +/** + * Parse options passed from a query string. + */ +function parse_options_query_string() { + $options = [ + 'generate_enclosure' => FALSE, + 'show_usernames' => TRUE, + 'show_multimedia' => TRUE, + 'verbose_output' => TRUE, + ]; + + if (isset($_GET['src_url'])) { + $options['src_url'] = $_GET['src_url']; } - public function tweep($uri) { - $html = $this->get_contents($uri); + if (isset($_GET['generate_enclosure'])) { + $options['generate_enclosure'] = $_GET['generate_enclosure'] == 1; + } - $xmlDoc = new DOMDocument(); - $xmlDoc->loadHTML($html); + if (isset($_GET['show_multimedia'])) { + $options['show_multimedia'] = $_GET['show_multimedia'] != 0; + } - $output = $this->xsltProcessor->transformToXML($xmlDoc); + if (isset($_GET['show_usernames'])) { + $options['show_usernames'] = $_GET['show_usernames'] != 0; + } - if (FALSE === $output) { - trigger_error('XSL transformation failed.', E_USER_ERROR); - return NULL; - } - return $output; + if (isset($_GET['verbose_output'])) { + $options['verbose_output'] = $_GET['verbose_output'] != 0; } + + return $options; } -if (isset($_GET['screen_name'])) { - $screen_name = $_GET['screen_name']; -} else if (isset($argv[1])) { - $screen_name = $argv[1]; -} else { - if (isset($_SERVER['SCRIPT_NAME'])) - $usage = htmlentities("{$_SERVER['SCRIPT_NAME']}?screen_name="); - else - $usage = "{$argv[0]} \n"; - - die("usage: $usage"); +if (is_cli()) { + $options = parse_options_cli($argv, $argc); + $error_stream = fopen('php://stderr', 'w'); +} +else { + $options = parse_options_query_string(); + $error_stream = fopen('php://output', 'w'); } -$tweeper = new Tweeper('twitter_user_timeline2rss.xsl'); +if (!isset($options['src_url'])) { + fwrite($error_stream, usage(is_cli() ? $argv : NULL)); + exit(1); +} -$src_uri = 'https://twitter.com/' . $screen_name; -echo $tweeper->tweep($src_uri); +$tweeper = new Tweeper($options['generate_enclosure'], $options['show_usernames'], $options['show_multimedia'], $options['verbose_output']); +$output = $tweeper->tweep($options['src_url']); +if (is_null($output)) { + exit(1); +} +echo $output;