/***** BEGIN LICENSE BLOCK ***** {{{
Version: MPL 1.1/GPL 2.0/LGPL 2.1

The contents of this file are subject to the Mozilla Public License Version
1.1 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.mozilla.org/MPL/

Software distributed under the License is distributed on an "AS IS" basis,
WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
for the specific language governing rights and limitations under the
License.

(c) 2006-2007: Martin Stubenschrott <stubenschrott@gmx.net>

Alternatively, the contents of this file may be used under the terms of
either the GNU General Public License Version 2 or later (the "GPL"), or
the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
in which case the provisions of the GPL or the LGPL are applicable instead
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the provisions above, a recipient may use your version of this file under
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}}} ***** END LICENSE BLOCK *****/

vimperator.util = { //{{{

    escapeHTML: function (str)
    {
        // XXX: the following code is _much_ slower than a simple .replace()
        // :history display went down from 2 to 1 second after changing
        //
        // var e = window.content.document.createElement("div");
        // e.appendChild(window.content.document.createTextNode(str));
        // return e.innerHTML;
        return str.replace("&", "&amp;", "g").replace("<", "&lt;", "g").replace(">", "&gt;", "g");
    },

    // TODO: use :highlight color groups
    // if "processStrings" is true, any passed strings will be surrounded by " and
    // any line breaks are displayed as \n
    colorize: function (arg, processStrings)
    {
        var type = typeof arg;

        // some objects like window.JSON or getBrowsers()._browsers need the try/catch
        try
        {
            if (type == "number")
            {
                return "<span style=\"color: red;\">" + arg + "</span>";
            }
            else if (type == "string")
            {
                if (processStrings)
                    arg = '"' + vimperator.util.escapeHTML(arg.replace(/\n/, "\\n")) + '"';

                return "<span style=\"color: green;\">" + arg + "</span>";
            }
            else if (type == "boolean")
            {
                return "<span style=\"color: blue;\">" + arg + "</span>";
            }
            else if (arg == null || arg == "undefined")
            {
                return "<span style=\"color: blue;\">" + arg + "</span>";
            }
            else if (type == "object" || type == "function")
            {
                // for java packages value.toString() would crash so badly
                // that we cannot even try/catch it
                if (/^\[JavaPackage.*\]$/.test(arg))
                    return "[JavaPackage]";

                var str = arg.toString();
                if (typeof str == "string")  // can be "undefined"
                    return vimperator.util.escapeHTML(str);
                else
                    return "undefined";
            }
        }
        catch (e)
        {
            return "&lt;unknown&gt;";
        }

        return "&lt;unknown type&gt;";
    },

    // takes a string like 'google bla, www.osnews.com'
    // and returns an array ['www.google.com/search?q=bla', 'www.osnews.com']
    stringToURLArray: function (str)
    {
        var urls = str.split(/\s*\,\s+/);

        begin: for (var url = 0; url < urls.length; url++)
        {
            var newURL = vimperator.buffer.URL;
            var matches;

            // strip each 'URL' - makes things simpler later on
            urls[url] = urls[url].replace(/^\s+/, "").replace(/\s+$/, "");

            // FIXME: not really that good (doesn't handle .. in the middle)
            // check for ./ and ../ (or even .../) to go to a file in the upper directory
            if (matches = urls[url].match(/^(?:\.$|\.\/(\S*))/))
            {
                var tail = matches[1] || "";
                urls[url] = newURL.replace(/(.+\/)[^\/]*/, "$1" + tail);  // NOTE: escape / in character sets so as not to break Vim syntax highlighting
                continue;
            }
            else if (matches = urls[url].match(/^(?:\.\.$|\.\.\/(\S*))/))
            {
                var tail = matches[1] || "";
                urls[url] = newURL.replace(/(.+\/)[^\/]*/, "$1../" + tail);
                continue;
            }
            else if (matches = urls[url].match(/^(?:\.\.\.$|\.\.\.\/(\S*))/))
            {
                var location = window.content.document.location;
                var tail = matches[1] || "";
                urls[url] = location.protocol + "//" + location.host + "/" + tail;
                continue;
            }

            // if the string doesn't look like a valid URL (i.e. contains a space
            // or does not contain any of: .:/) try opening it with a search engine
            // or keyword bookmark
            if (/\s/.test(urls[url]) || !/[.:\/]/.test(urls[url]))
            {
                matches = urls[url].match(/^(\S+)(?:\s+(.+))?$/);

                var alias = matches[1];
                var text = matches[2] || null;

                // TODO: it would be clearer if the appropriate call to
                // getSearchURL was made based on whether or not the first word was
                // indeed an SE alias rather than seeing if getSearchURL can
                // process the call usefully and trying again if it fails - much
                // like the comments below ;-)

                // check if the first word is a search engine
                var searchURL = vimperator.bookmarks.getSearchURL(text, alias);
                if (searchURL/* && searchURL.length >= 1*/)
                {
                    urls[url] = searchURL;
                    continue;
                }
                else // the first word was not a search engine, search for the whole string in the default engine
                {
                    searchURL = vimperator.bookmarks.getSearchURL(urls[url], null);
                    if (searchURL/* && searchURL.length >= 1*/)
                    {
                        urls[url] = searchURL;
                        continue;
                    }
                }
            }

            // if we are here let Firefox handle the url and hope it does
            // something useful with it :)
        }

        return urls;
    },

    highlightURL: function (str, force)
    {
        if (force || /^[a-zA-Z]+:\/\//.test(str))
            return "<a class='hl-URL' href='" + str + "'>" + vimperator.util.escapeHTML(str) + "</a>";
        else
            return str;
    },

    formatBytes: function (num, decimalPlaces, humanReadable)
    {
        const unitVal = ["Bytes", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB"];
        var unitIndex = 0;
        var tmpNum = parseInt(num) || 0;
        var strNum = [tmpNum + ""];

        if (humanReadable)
        {
            while (tmpNum >= 1024)
            {
                tmpNum /= 1024;
                if (++unitIndex > (unitVal.length - 1))
                    break;
            }
            let decPower = Math.pow(10, decimalPlaces);
            strNum = ((Math.round(tmpNum * decPower) / decPower) + "").split(".", 2);

            if (!strNum[1])
                strNum[1] = "";
            while (strNum[1].length < decimalPlaces) // padd with "0" to the desired decimalPlaces)
                strNum[1] += "0";
        }

        for (var u = strNum[0].length - 3; u > 0; u -= 3) // make a 10000 a 10,000
            strNum[0] = strNum[0].substring(0, u) + "," + strNum[0].substring(u, strNum[0].length);

        if (unitIndex) // decimalPlaces only when > Bytes
            strNum[0] += "." + strNum[1];

        return strNum[0] + " " + unitVal[unitIndex];
    }

}; //}}}

// vim: set fdm=marker sw=4 ts=4 et: