path: root/data/util.js

/*global console: false */
/*jslint onevar: false */
// Released under the MIT/X11 license
// http://www.opensource.org/licenses/mit-license.php
"use strict";
// ==============================================================

/**
 * parse URL to get its parts.
 *
 * @param url
 * @return object with all parsed parts of URL as properties
 *
 * Originally from http://james.padolsey.com/javascript/parsing-urls-with-the-dom/
 * Copyright February 19th, 2009, James Padolsey, <license undeclared>
 *
 * This function creates a new anchor element and uses location
 * properties (inherent) to get the desired URL data. Some String
 * operations are used (to normalize results across browsers).
 */
function parseURL(url) {
    var a =  document.createElement('a');
    a.href = url;
    return {
        source: url,
        protocol: a.protocol.replace(':',''),
        host: a.hostname,
        port: a.port,
        query: a.search,
        params: (function(){
            var ret = {},
                seg = a.search.replace(/^\?/,'').split('&'),
                len = seg.length, i = 0, s;
            for (;i<len;i++) {
                if (!seg[i]) { continue; }
                s = seg[i].split('=');
                ret[s[0]] = s[1];
            }
            return ret;
        })(),
        file: (a.pathname.match(/\/([^\/?#]+)$/i) || [,''])[1],
        hash: a.hash.replace('#',''),
        path: a.pathname.replace(/^([^\/])/,'/$1'),
        relative: (a.href.match(/tps?:\/\/[^\/]+(.+)/) || [,''])[1],
        segments: a.pathname.replace(/^\//,'').split('/')
    };
}

/**
 * parse XML object out of string working around various bugs in Gecko implementation
 * see https://developer.mozilla.org/en/E4X for more information
 *
 * @param inStr String with unparsed XML string
 * @return XML object
 */
function parseXMLfromString (inStuff) {
    // if (typeof inStuff !== 'string') In future we should recognize this.response
    // and get just .text property out of it. TODO
    var respStr = inStuff.replace(/^<\?xml\s+version\s*=\s*(["'])[^\1]+\1[^?]*\?>/, ""); // bug 336551
    return new XML(respStr);
}

/**
 * Get a bug no
 */
function getBugNo() {
    return document.forms.namedItem('changeform').getElementsByName("id")[0].value;
}

/**
 * Get a bug no from URL ... fails with aliases
 * @param url String with URL to be analyzed
 * @return String with the bug ID
 */
function getBugNoFromURL(url) {
    var params = parseURL(url).params;
    if (params && params.id) {
        return params.id;
    }
}

/*
 * From <a> element diggs out just plain email address
 * Note that bugzilla.gnome.org doesn't have mailto: url but
 * https://bugzilla.gnome.org/page.cgi?id=describeuser.html&login=mcepl%40redhat.com
 *
 * @param aElement Element with href attribute or something else
 * @return String with the address or null
 *
 */
function parseMailto(aElement) {
    var emailStr = "", hrefStr = "";
    // use url utils
    if (aElement) {
        hrefStr = decodeURIComponent(aElement.getAttribute("href"));
        emailStr = hrefStr.split(":");
        // workaround for Gnome bugzilla ... no mailto: here.
        if (emailStr.length < 2) {
            var params = parseURL("https://" + window.location.hostname + "/" + hrefStr).params;
            return decodeURI(params.login);
        }
        return emailStr[1];
    }
    return null;
}

/**
 * format date to be in ISO format (just day part)
 *
 * @param date
 * @return string with the formatted date
 */
function getISODate(dateStr) {
    function pad(n) {
        return n < 10 ? '0' + n : n;
    }
    var date = new Date(dateStr);
    return date.getFullYear() + '-' + pad(date.getMonth() + 1) + '-' +
            pad(date.getDate());
}

/**
 * Check whether an item is member of the list. Idea is just to make long if
 * commands slightly more readable.
 *
 * @param mbr string to be searched in the list
 * @param list list
 * @return position of the string in the list, or -1 if none found.
 */
function isInList(mbr, list) {
    if (!list) {
        return false;
    }
    return (list.indexOf(mbr) !== -1);
};

/**
 * Make sure value returned is Array
 *
 * @param Array/String
 * @return Array
 *
 * If something else than Array or String is passed to the function
 * the result will be untouched actual argument of the call.
 */
function valToArray(val) {
    var isArr = val &&
        val.constructor &&
        val.constructor.name === "Array";
    return isArr ? val : [val];
}

/**
 * Merges two comma separated string as a list and returns new string
 *
 * @param str String with old values
 * @param value String/Array with other values
 * @return String with merged lists
 */
function addCSVValue(str, value) {
    var parts = (str.trim().length > 0 ? str.split(/[,\s]+/) : []);
    if (!value) {
        return str;
    }
    if (!isInList(value, parts)) {
        var newValue = valToArray(value);
        parts = parts.concat(newValue);
    }
    // this is necessary to get comma-space separated string even when
    // value is an array already
    parts = parts.join(",").split(",");
    return parts.join(", ");
}

/**
 * Treats comma separated string as a list and removes one item from it
 *
 * @param str String treated as a list
 * @param value String with the value to be removed from str
 * @return String with the resulting list comma separated
 */
function removeCSVValue(str, value) {
    str = str.trim();
    var parts = str ? str.split(/[,\s]+/) : [];
    var valueArr = value instanceof Array ? value : value.split(/[,\s]+/);
    parts = parts.filter(function (e, i, a) {
        return (!isInList(e, valueArr));
    });
    return parts.join(", ");
}

/**
 * select element of the array where regexp in the first element matches second
 * parameter of this function
 *
 * @param list Array with regexps and return values
 * @param chosingMark String by which the element of array is to be matched
 * @return Object chosen element
 */
function filterByRegexp(list, chosingMark) {
    var chosenPair = [];
    if (list.length > 0) {
        chosenPair = list.filter(function (pair) {
            return new RegExp(pair.regexp, "i").test(chosingMark);
        });
    }
    if (chosenPair.length > 0) {
        return chosenPair[0].addr;
    } else {
        return "";
    }
}

/**
 * remove elements from the page based on their IDs
 *
 * @param doc Document object
 * @param target String/Array with ID(s)
 * @param remove Boolean indicating whether the node should be
 * actually removed or just hidden.
 * @return none
 * TODO remove parameter could be replaced by function which would
 * do actual activity.
 */
function killNodes(doc, target, remove) {
    target = target.trim();
    var targetArr = target instanceof Array ? target : target.split(/[,\s]+/);
    targetArr.forEach(function(x) {
        if (remove) {
            var targetNode = doc.getElementById(x);
            targetNode.parentNode.removeChild(targetNode);
        } else {
            x.style.display = "none";
        }
    });
}

/**
 * Remove duplicate elements from array
 *
 * @param arr Array which needs to be cleaned up
 * @return cleaned up array
 */
function removeDuplicates (arr) {
  for (var i = 0; i < arr.length; i++) {
    for (var j = i + 1; j < arr.length; j++) {
        if (arr[i] == arr[j]) {
            arr.splice (j, 1);
        }
    }
  }
  return arr;
}