//-  Functions
//- ============================================================================

//- Full page title

-   function getPageTitle() {
-       if(current.path[0] == 'blog' && current.source != 'index') title += ' | Blog';
-       return (current.path[0] == 'index') ? sitename + ' | ' + slogan : title + ' | ' + sitename;
-   }


//- Get current URL
    current - [string] current path

-   function getCurrentUrl() {
-       var base = current.path;
-       if(current.source == 'index') base.pop();
-       return url + '/' + base.join('/');
-   }


//- Assign flexbox order, elements are assigned negative values to always move
    them to the start of a flexbox in the correct order (i.e. -3, -2, -1)
    counter - [integer] index of current item
    max     - [integer] amount of items in total
    start   - [integer] index of start position, i.e. 0 -> oder: -1 (optional)

-   function assignOrder(counter, max, start) {
-       if(counter >= 0 && counter < max) return "order: -" + (max - counter + (start || 0));
-   }


//- Create Twitter share URL
    current - [string] current path
    tweet   - [string] text to be shared with link

-   function twitterShareUrl(current, tweet) {
-       return "https://twitter.com/share?text=" + tweet + "&amp;url=" + getCurrentUrl(current) + ";via=" + profiles.twitter;
-   }


//- Add prefix to each item in an array (used for modifier CSS classes)
    array   - [array] array of strings, taken from mixin arguments 
    prefix  - [string] class prefix (i.e. 'button--')

-   function prefixArgs(array, prefix) {
-       for(var i = 0; i < array.length; i++) {
-           array[i] = prefix + array[i];
-       }
-       return array.join(' ');
-   }


//- Convert date to human readable and timestamp format
    input - [string] date in the format YYYY-MM-DD

-   function convertDate(input) {
-       var dates = [];
-       var months = [ 'January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December' ];
-       var date = new Date(input);
-       dates.full = months[date.getMonth()] + ' ' + date.getDate() + ', ' + date.getFullYear();
-       dates.timestamp = JSON.parse(JSON.stringify(date));
-       return dates;
-   }


//- Convert date to valid RSS pubDate
    input - [string] date in the format YYYY-MM-DD

- function convertPubDate(input) {
-   var date = new Date(input);
-   var pieces = date.toString().split(' ');
-   var offsetTime = pieces[5].match(/[-+]\d{4}/);
-   var offset = (offsetTime) ? offsetTime : pieces[5];
-   var parts = [ pieces[0] + ',', pieces[2], pieces[1], pieces[3], pieces[4], offset ];
-   return parts.join(' ');
- }


//- Compile scrset attribute for hero images
    image - [object] article image object from _data.json
    path  - [string] relative path to image folder

-   function getScrset(image, path) {
-       var scrset = path + image.file + ' ' + image_sizes.medium + 'w';
-       if(image.file_small) scrset += ', ' + path + image.file_small + ' ' + image_sizes.small + 'w';
-       if(image.file_large) scrset += ', ' + path + image.file_large + ' ' + image_sizes.large + 'w';
-       return scrset;
-   }


//- Get meta image

-   function getMetaImage() {
-       if(current.path[0] == 'blog' && image && image.file) {    
-           return url + '/blog/img/' + image.file;
-        }
-       else {
-           return url + '/assets/img/social.png';
-       }
-   }