/php.js

/* 
 * More info at: http://phpjs.org
 * 
 * This is version: 3.26
 * php.js is copyright 2012 Kevin van Zonneveld.
 * 
 * Portions copyright Brett Zamir (http://brett-zamir.me), Kevin van Zonneveld
 * (http://kevin.vanzonneveld.net), Onno Marsman, Theriault, Michael White
 * (http://getsprink.com), Waldo Malqui Silva, Paulo Freitas, Jack, Jonas
 * Raoni Soares Silva (http://www.jsfromhell.com), Philip Peterson, Legaev
 * Andrey, Ates Goral (http://magnetiq.com), Alex, Ratheous, Martijn Wieringa,
 * Rafał Kukawski (http://blog.kukawski.pl), lmeyrick
 * (https://sourceforge.net/projects/bcmath-js/), Nate, Philippe Baumann,
 * Enrique Gonzalez, Webtoolkit.info (http://www.webtoolkit.info/), Carlos R.
 * L. Rodrigues (http://www.jsfromhell.com), Ash Searle
 * (http://hexmen.com/blog/), Jani Hartikainen, travc, Ole Vrijenhoek,
 * Erkekjetter, Michael Grier, Rafał Kukawski (http://kukawski.pl), Johnny
 * Mast (http://www.phpvrouwen.nl), T.Wild, d3x,
 * http://stackoverflow.com/questions/57803/how-to-convert-decimal-to-hex-in-javascript,
 * Rafał Kukawski (http://blog.kukawski.pl/), stag019, pilus, WebDevHobo
 * (http://webdevhobo.blogspot.com/), marrtins, GeekFG
 * (http://geekfg.blogspot.com), Andrea Giammarchi
 * (http://webreflection.blogspot.com), Arpad Ray (mailto:arpad@php.net),
 * gorthaur, Paul Smith, Tim de Koning (http://www.kingsquare.nl), Joris, Oleg
 * Eremeev, Steve Hilder, majak, gettimeofday, KELAN, Josh Fraser
 * (http://onlineaspect.com/2007/06/08/auto-detect-a-time-zone-with-javascript/),
 * Marc Palau, Kevin van Zonneveld (http://kevin.vanzonneveld.net/), Martin
 * (http://www.erlenwiese.de/), Breaking Par Consulting Inc
 * (http://www.breakingpar.com/bkp/home.nsf/0/87256B280015193F87256CFB006C45F7),
 * Chris, Mirek Slugen, saulius, Alfonso Jimenez
 * (http://www.alfonsojimenez.com), Diplom@t (http://difane.com/), felix,
 * Mailfaker (http://www.weedem.fr/), Tyler Akins (http://rumkin.com), Caio
 * Ariede (http://caioariede.com), Robin, Kankrelune
 * (http://www.webfaktory.info/), Karol Kowalski, Imgen Tata
 * (http://www.myipdf.com/), mdsjack (http://www.mdsjack.bo.it), Dreamer,
 * Felix Geisendoerfer (http://www.debuggable.com/felix), Lars Fischer, AJ,
 * David, Aman Gupta, Michael White, Public Domain
 * (http://www.json.org/json2.js), Steven Levithan
 * (http://blog.stevenlevithan.com), Sakimori, Pellentesque Malesuada,
 * Thunder.m, Dj (http://phpjs.org/functions/htmlentities:425#comment_134018),
 * Steve Clay, David James, Francois, class_exists, nobbler, T. Wild, Itsacon
 * (http://www.itsacon.net/), date, Ole Vrijenhoek (http://www.nervous.nl/),
 * Fox, Raphael (Ao RUDLER), Marco, noname, Mateusz "loonquawl" Zalega, Frank
 * Forte, Arno, ger, mktime, john (http://www.jd-tech.net), Nick Kolosov
 * (http://sammy.ru), marc andreu, Scott Cariss, Douglas Crockford
 * (http://javascript.crockford.com), madipta, Slawomir Kaniecki,
 * ReverseSyntax, Nathan, Alex Wilson, kenneth, Bayron Guevara, Adam Wallner
 * (http://web2.bitbaro.hu/), paulo kuong, jmweb, Lincoln Ramsay, djmix,
 * Pyerre, Jon Hohle, Thiago Mata (http://thiagomata.blog.com), lmeyrick
 * (https://sourceforge.net/projects/bcmath-js/this.), Linuxworld, duncan,
 * Gilbert, Sanjoy Roy, Shingo, sankai, Oskar Larsson Högfeldt
 * (http://oskar-lh.name/), Denny Wardhana, 0m3r, Everlasto, Subhasis Deb,
 * josh, jd, Pier Paolo Ramon (http://www.mastersoup.com/), P, merabi, Soren
 * Hansen, Eugene Bulkin (http://doubleaw.com/), Der Simon
 * (http://innerdom.sourceforge.net/), echo is bad, Ozh, XoraX
 * (http://www.xorax.info), EdorFaus, JB, J A R, Marc Jansen, Francesco, LH,
 * Stoyan Kyosev (http://www.svest.org/), nord_ua, omid
 * (http://phpjs.org/functions/380:380#comment_137122), Brad Touesnard, MeEtc
 * (http://yass.meetcweb.com), Peter-Paul Koch
 * (http://www.quirksmode.org/js/beat.html), Olivier Louvignes
 * (http://mg-crea.com/), T0bsn, Tim Wiel, Bryan Elliott, Jalal Berrami,
 * Martin, JT, David Randall, Thomas Beaucourt (http://www.webapp.fr), taith,
 * vlado houba, Pierre-Luc Paour, Kristof Coomans (SCK-CEN Belgian Nucleair
 * Research Centre), Martin Pool, Kirk Strobeck, Rick Waldron, Brant Messenger
 * (http://www.brantmessenger.com/), Devan Penner-Woelk, Saulo Vallory, Wagner
 * B. Soares, Artur Tchernychev, Valentina De Rosa, Jason Wong
 * (http://carrot.org/), Christoph, Daniel Esteban, strftime, Mick@el, rezna,
 * Simon Willison (http://simonwillison.net), Anton Ongson, Gabriel Paderni,
 * Marco van Oort, penutbutterjelly, Philipp Lenssen, Bjorn Roesbeke
 * (http://www.bjornroesbeke.be/), Bug?, Eric Nagel, Tomasz Wesolowski,
 * Evertjan Garretsen, Bobby Drake, Blues (http://tech.bluesmoon.info/), Luke
 * Godfrey, Pul, uestla, Alan C, Ulrich, Rafal Kukawski, Yves Sucaet,
 * sowberry, Norman "zEh" Fuchs, hitwork, Zahlii, johnrembo, Nick Callen,
 * Steven Levithan (stevenlevithan.com), ejsanders, Scott Baker, Brian Tafoya
 * (http://www.premasolutions.com/), Philippe Jausions
 * (http://pear.php.net/user/jausions), Aidan Lister
 * (http://aidanlister.com/), Rob, e-mike, HKM, ChaosNo1, metjay, strcasecmp,
 * strcmp, Taras Bogach, jpfle, Alexander Ermolaev
 * (http://snippets.dzone.com/user/AlexanderErmolaev), DxGx, kilops, Orlando,
 * dptr1988, Le Torbi, James (http://www.james-bell.co.uk/), Pedro Tainha
 * (http://www.pedrotainha.com), James, Arnout Kazemier
 * (http://www.3rd-Eden.com), Chris McMacken, gabriel paderni, Yannoo,
 * FGFEmperor, baris ozdil, Tod Gentille, Greg Frazier, jakes, 3D-GRAF, Allan
 * Jensen (http://www.winternet.no), Howard Yeend, Benjamin Lupton, davook,
 * daniel airton wermann (http://wermann.com.br), Atli Þór, Maximusya, Ryan
 * W Tenney (http://ryan.10e.us), Alexander M Beedie, fearphage
 * (http://http/my.opera.com/fearphage/), Nathan Sepulveda, Victor, Matteo,
 * Billy, stensi, Cord, Manish, T.J. Leahy, Riddler
 * (http://www.frontierwebdev.com/), Rafał Kukawski, FremyCompany, Matt
 * Bradley, Tim de Koning, Luis Salazar (http://www.freaky-media.com/), Diogo
 * Resende, Rival, Andrej Pavlovic, Garagoth, Le Torbi
 * (http://www.letorbi.de/), Dino, Josep Sanz (http://www.ws3.es/), rem,
 * Russell Walker (http://www.nbill.co.uk/), Jamie Beck
 * (http://www.terabit.ca/), setcookie, Michael, YUI Library:
 * http://developer.yahoo.com/yui/docs/YAHOO.util.DateLocale.html, Blues at
 * http://hacks.bluesmoon.info/strftime/strftime.js, Ben
 * (http://benblume.co.uk/), DtTvB
 * (http://dt.in.th/2008-09-16.string-length-in-bytes.html), Andreas, William,
 * meo, incidence, Cagri Ekin, Amirouche, Amir Habibi
 * (http://www.residence-mixte.com/), Luke Smith (http://lucassmith.name),
 * Kheang Hok Chin (http://www.distantia.ca/), Jay Klehr, Lorenzo Pisani,
 * Tony, Yen-Wei Liu, Greenseed, mk.keck, Leslie Hoare, dude, booeyOH, Ben
 * Bryan
 * 
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL KEVIN VAN ZONNEVELD BE LIABLE FOR ANY CLAIM, DAMAGES
 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */ 


// jslint.com configuration options. See: http://wiki.github.com/kvz/phpjs/jslint-options
/* global window */
/* jslint adsafe: false, bitwise: false, browser: false, cap: false, css: false, debug: false, devel: false, eqeqeq: true, evil: false, forin: false, fragment: false, immed: true, indent: 4, laxbreak: false, maxerr: 100, maxlen: 80, newcap: true, nomen: false, on: true, onevar: false, passfail: false, plusplus: false, regexp: false, rhino: false, safe: false, sidebar: false, strict: false, sub: false, undef: true, white: false, widget: false */

// Our idea with CommonJS is that you can do the following:
// var php = require('php');
// php.md5('test');

exports.inet_ntop = function (a) {
    // Converts a packed inet address to a human readable IP address string  
    // 
    // version: 1109.2015
    // discuss at: http://phpjs.org/functions/inet_ntop
    // +   original by: Theriault
    // *     example 1: \php.inet_ntop('\x7F\x00\x00\x01');
    // *     returns 1: '127.0.0.1'
    // *     example 2: \php.inet_ntop('\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\1');
    // *     returns 2: '::1'
    var i = 0,
        m = '',
        c = [];
    a += '';
    if (a.length === 4) { // IPv4
        return [
        a.charCodeAt(0), a.charCodeAt(1), a.charCodeAt(2), a.charCodeAt(3)].join('.');
    } else if (a.length === 16) { // IPv6
        for (i = 0; i < 16; i++) {
            c.push(((a.charCodeAt(i++) << 8) + a.charCodeAt(i)).toString(16));
        }
        return c.join(':').replace(/((^|:)0(?=:|$))+:?/g, function (t) {
            m = (t.length > m.length) ? t : m;
            return t;
        }).replace(m || ' ', '::');
    } else { // Invalid length
        return false;
    }
};

exports.inet_pton = function (a) {
    // Converts a human readable IP address to a packed binary string  
    // 
    // version: 1109.2015
    // discuss at: http://phpjs.org/functions/inet_pton
    // +   original by: Theriault
    // *     example 1: \php.inet_pton('::');
    // *     returns 1: '\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0' (binary)
    // *     example 2: \php.inet_pton('127.0.0.1');
    // *     returns 2: '\x7F\x00\x00\x01' (binary)
    var r, m, x, i, j, f = String.fromCharCode;
    m = a.match(/^(?:\d{1,3}(?:\.|$)){4}/); // IPv4
    if (m) {
        m = m[0].split('.');
        m = f(m[0]) + f(m[1]) + f(m[2]) + f(m[3]);
        // Return if 4 bytes, otherwise false.
        return m.length === 4 ? m : false;
    }
    r = /^((?:[\da-f]{1,4}(?::|)){0,8})(::)?((?:[\da-f]{1,4}(?::|)){0,8})$/;
    m = a.match(r); // IPv6
    if (m) {
        // Translate each hexadecimal value.
        for (j = 1; j < 4; j++) {
            // Indice 2 is :: and if no length, continue.
            if (j === 2 || m[j].length === 0) {
                continue;
            }
            m[j] = m[j].split(':');
            for (i = 0; i < m[j].length; i++) {
                m[j][i] = parseInt(m[j][i], 16);
                // Would be NaN if it was blank, return false.
                if (isNaN(m[j][i])) {
                    return false; // Invalid IP.
                }
                m[j][i] = f(m[j][i] >> 8) + f(m[j][i] & 0xFF);
            }
            m[j] = m[j].join('');
        }
        x = m[1].length + m[3].length;
        if (x === 16) {
            return m[1] + m[3];
        } else if (x < 16 && m[2].length > 0) {
            return m[1] + (new Array(16 - x + 1)).join('\x00') + m[3];
        }
    }
    return false; // Invalid IP.
};

exports.ip2long = function (IP) {
    // Converts a string containing an (IPv4) Internet Protocol dotted address into a proper address  
    // 
    // version: 1109.2015
    // discuss at: http://phpjs.org/functions/ip2long
    // +   original by: Waldo Malqui Silva
    // +   improved by: Victor
    // +    revised by: fearphage (http://http/my.opera.com/fearphage/)
    // +    revised by: Theriault
    // *     example 1: \php.ip2long('192.0.34.166');
    // *     returns 1: 3221234342
    // *     example 2: \php.ip2long('0.0xABCDEF');
    // *     returns 2: 11259375
    // *     example 3: \php.ip2long('255.255.255.256');
    // *     returns 3: false
    var i = 0;
    // PHP allows decimal, octal, and hexadecimal IP components.
    // PHP allows between 1 (e.g. 127) to 4 (e.g 127.0.0.1) components.
    IP = IP.match(/^([1-9]\d*|0[0-7]*|0x[\da-f]+)(?:\.([1-9]\d*|0[0-7]*|0x[\da-f]+))?(?:\.([1-9]\d*|0[0-7]*|0x[\da-f]+))?(?:\.([1-9]\d*|0[0-7]*|0x[\da-f]+))?$/i); // Verify IP format.
    if (!IP) {
        return false; // Invalid format.
    }
    // Reuse IP variable for component counter.
    IP[0] = 0;
    for (i = 1; i < 5; i += 1) {
        IP[0] += !! ((IP[i] || '').length);
        IP[i] = parseInt(IP[i]) || 0;
    }
    // Continue to use IP for overflow values.
    // PHP does not allow any component to overflow.
    IP.push(256, 256, 256, 256);
    // Recalculate overflow of last component supplied to make up for missing components.
    IP[4 + IP[0]] *= Math.pow(256, 4 - IP[0]);
    if (IP[1] >= IP[5] || IP[2] >= IP[6] || IP[3] >= IP[7] || IP[4] >= IP[8]) {
        return false;
    }
    return IP[1] * (IP[0] === 1 || 16777216) + IP[2] * (IP[0] <= 2 || 65536) + IP[3] * (IP[0] <= 3 || 256) + IP[4] * 1;
};

exports.long2ip = function (proper_address) {
    // Converts an (IPv4) Internet network address into a string in Internet standard dotted format  
    // 
    // version: 1109.2015
    // discuss at: http://phpjs.org/functions/long2ip
    // +   original by: Waldo Malqui Silva
    // *     example 1: \php.long2ip( 3221234342 );
    // *     returns 1: '192.0.34.166'
    var output = false;

    if (!isNaN(proper_address) && (proper_address >= 0 || proper_address <= 4294967295)) {
        output = Math.floor(proper_address / Math.pow(256, 3)) + '.' + Math.floor((proper_address % Math.pow(256, 3)) / Math.pow(256, 2)) + '.' + Math.floor(((proper_address % Math.pow(256, 3)) % Math.pow(256, 2)) / Math.pow(256, 1)) + '.' + Math.floor((((proper_address % Math.pow(256, 3)) % Math.pow(256, 2)) % Math.pow(256, 1)) / Math.pow(256, 0));
    }

    return output;
};