WordPress Plugin: adds shortcodes to assist in incorporating features of Bootstrap including elementary grid handling.

rgc_shortcodes.php

<?php
/**
 * @package Shortcodes for Bootstrap: Grid, Misc
 * @version 0.6
 */
/*
Plugin Name: Shortcodes for Bootstrap: Grid, Misc
Plugin URI: https://gist.github.com/rgchris/b473a165b6c44275b6b8a2e693e9deca
Description: Adds shortcodes to assist in incorporating features of Bootstrap including elementary grid handling.
Author: Christopher Ross-Gill
Version: 0.6
Author URI: http://ross-gill.com
*/

defined( 'ABSPATH' ) or die( 'Shortcodes for Bootstrap Plugin' );

/**
 * Container/Paragraph-level Shortcode Fix.
 * https://gist.github.com/bitfade/4555047
 */
function rgc_content_filter($content) {
    // array of custom shortcodes requiring the fix 
    $block = join(
        "|",
        array("break","row","column","well","page","header")
    );
    // opening tag
    $rep = preg_replace("/(<p>)?\[($block)(\s[^\]]+)?\](<\/p>|<br \/>)?/","[$2$3]",$content);

    // closing tag
    $rep = preg_replace("/(<p>)?\[\/($block)](<\/p>|<br \/>)?/","[/$2]",$rep);

    // wordpress auto-paragraph handling can f*ck right off
    $rep = preg_replace("/<p>(.*<\/div>)/","$1",$rep);
    $rep = preg_replace("/(<div.*)<\/p>/","$1",$rep);

    // return $content;
    return $rep;
}
add_filter("the_content", "rgc_content_filter");

/**
 * Break [break]
 */
function rgc_break( $atts ) {
    return '<hr class="divider">';
}
add_shortcode( 'break', 'rgc_break' );

/**
 * Grid [row]\n[column width="one third"]\n...paragraphs...\n[/column]\n[/row]
 */
function rgc_row( $atts, $content = null ) {
    $options = shortcode_atts(
        array('class' => null,),
        $atts
    );

    $class = "row";

    if ($options['class']) {
        $class .= ' ' . $options['class'];
    }

    return "\n<div class='" . $class . "'>" . do_shortcode($content) . "</div><!-- /row -->\n";
}
add_shortcode( 'row', 'rgc_row' );

function rgc_column( $atts, $content = null ) {
    $options = shortcode_atts(
        array(
            'width' => null,
            'medium' => null,
            'small' => null,
            'offset' => null,
            'align' => null,
            'break' => null,
            'class' => null,
        ),
        $atts
    );

    $class = 'column';

    switch ($options['offset']) {
        case 'sixth':
        case 'one sixth':
        case 'one-sixth':
            $class .= ' col-md-offset-2';
            break;
        case 'twelfth':
        case 'one twelfth':
        case 'one-twelfth':
            $class .= ' col-md-offset-1';
            break;
    };

    switch ($options['medium'] ? $options['medium'] : $options['width']) {
        case 'half':
        case 'one half':
        case 'one-half':
            $class .= ' col-md-6';
            break;
        case 'third':
        case 'one third':
        case 'one-third':
            $class .= ' col-md-4';
            break;
        case 'two thirds':
        case 'two-thirds':
            $class .= ' col-md-8';
            break;
        case 'quarter':
        case 'one quarter':
        case 'one-quarter':
            $class .= ' col-md-3';
            break;
        case 'three quarters':
        case 'three-quarters':
            $class .= ' col-md-9';
            break;
        case 'sixth':
        case 'one sixth':
        case 'one-sixth':
            $class .= ' col-md-2';
            break;
        case 'five sixths':
        case 'five-sixths':
            $class .= ' col-md-10';
            break;
        default:
            $class .= ' col-md-4';
            break;
    };

    switch ($options['small']) {
        case 'half':
        case 'one half':
        case 'one-half':
            $class .= ' col-sm-6';
            break;
        case 'third':
        case 'one third':
        case 'one-third':
            $class .= ' col-sm-4';
            break;
        case 'two thirds':
        case 'two-thirds':
            $class .= ' col-sm-8';
            break;
        case 'quarter':
        case 'one quarter':
        case 'one-quarter':
            $class .= ' col-sm-3';
            break;
        case 'three quarters':
        case 'three-quarters':
            $class .= ' col-sm-9';
            break;
        case 'sixth':
        case 'one sixth':
        case 'one-sixth':
            $class .= ' col-sm-2';
            break;
        case 'five sixths':
        case 'five-sixths':
            $class .= ' col-sm-10';
            break;
    };

    switch ($options['align']) {
        case 'left':
            $class .= ' text-left';
            break;
        case 'center':
            $class .= ' text-center';
            break;
        case 'right':
            $class .= ' text-right';
            break;
    };

    return "<div class='" . $class . "'>" . do_shortcode($content) . "</div><!-- /" . $class . " -->";
}
add_shortcode( 'column', 'rgc_column' );

/**
 * Well [well]...paragraphs...[/well]
 */
function rgc_well( $atts, $content = null ) {
    return "<div class='well'>" . $content . "</div><!-- /well -->";
}
add_shortcode( 'well', 'rgc_well' );

/**
 * Page Content [page]...paragraphs...[/page]
 */
function rgc_main_content( $atts, $content = null ) {
    $options = shortcode_atts(
        array(
            'contained' => null,
            'class' => null,
        ),
        $atts
    );

    $class = 'main';

    if ($options['class']) {
        $class .= ' ' . $options['class'];
    }

    if ($options['contained'] = 'true') {
        return "\n<div class='container'>\n<div class='" . $class . "'>" .
            do_shortcode($content)
            . "</div><!-- /main -->\n</div><!-- /container -->\n";
    }
    else {
        return "\n<div class='" . $class . "'>\n<div class='container'>" .
            do_shortcode($content)
            . "</div><!-- /container -->\n</div><!-- /main -->\n";
    }
}
add_shortcode( 'page', 'rgc_main_content' );

/**
 * Jumbotron [
 */
function rgc_page_header( $atts, $content = null ) {
    $options = shortcode_atts(
        array(
            'contained' => null,
            'type' => null,
            'align' => null,
            'class' => null,
        ),
        $atts
    );

    $class = 'jumbotron';

    switch ($options['type']) {
        case 'grey':
        case 'gray':
            $class .= ' grey';
            break;
        case 'featured':
        case 'feature':
            $class .= ' feature';
            break;
    };

    switch ($options['align']) {
        case 'left':
            $class .= ' text-left';
            break;
        case 'center':
            $class .= ' text-center';
            break;
        case 'right':
            $class .= ' text-right';
            break;
    };

    if ($options['class']) {
        $class .= ' ' . $options['class'];
    }

    if ($options['contained'] = 'true') {
        return "\n<div class='container'>\n<div class='" . $class . "'>" .
            do_shortcode($content)
            . "</div><!-- /jumbotron -->\n</div><!-- /container -->\n";
    }
    else {
        return "\n<div class='" . $class . "'>\n<div class='container'>" .
            do_shortcode($content)
            . "</div><!-- /container -->\n</div><!-- /jumbotron -->\n";
    }
}
add_shortcode( 'header', 'rgc_page_header' );

/**
 * Icon [icon image="floppy-disk"]
 */
function rgc_icon( $atts ) {
    $options = shortcode_atts(
        array(
            'image' => 'question-sign',
            'size' => null,
        ),
        $atts
    );

    $class = 'glyphicon glyphicon-';

    if (in_array($options['image'], array(
        "adjust", "alert", "align-center", "align-justify", "align-left", "align-right",
        "arrow-down", "arrow-left", "arrow-right", "arrow-up", "asterisk",

        "backward", "ban-circle", "barcode", "bell", "bold", "book", "bookmark",
        "briefcase", "bullhorn",

        "calendar", "camera", "certificate", "check", "chevron-down", "chevron-left",
        "chevron-right", "chevron-up", "circle-arrow-down", "circle-arrow-left",
        "circle-arrow-right", "circle-arrow-up", "cloud", "cloud-download",
        "cloud-upload", "cog", "collapse-down", "collapse-up", "comment", "compressed",
        "copyright-mark", "credit-card", "cutlery",

        "dashboard", "download", "download-alt", "earphone", "edit", "eject", "envelope",
        "euro", "exclamation-sign", "expand", "export", "eye-close", "eye-open",

        "facetime-video", "fast-backward", "fast-forward", "file", "film", "filter",
        "fire", "flag", "flash", "floppy-disk", "floppy-open", "floppy-remove",
        "floppy-save", "floppy-saved", "folder-close", "folder-open", "font", "forward",
        "fullscreen",

        "gbp", "gift", "glass", "globe",

        "hand-down", "hand-left", "hand-right", "hand-up", "hd-video", "hdd", "header",
        "headphones", "heart", "heart-empty", "home",

        "import", "inbox", "indent-left", "indent-right", "info-sign", "italic",

        "leaf", "link", "list", "list-alt", "lock", "log-in", "log-out",

        "magnet", "map-marker", "minus", "minus-sign", "money", "move", "music",

        "new-window",

        "off", "ok", "ok-circle", "ok-sign", "open",

        "paperclip", "pause", "pencil", "phone", "phone-alt", "picture", "piggy-bank", "plane",
        "play", "play-circle", "plus", "plus-sign", "print", "pushpin",

        "qrcode", "question-sign",

        "radar", "random", "record", "refresh", "registration-mark", "remove", "remove-circle",
        "remove-sign", "repeat", "resize-full", "resize-horizontal", "resize-small",
        "resize-vertical", "retweet", "road",

        "save", "saved", "screenshot", "sd-video", "search", "send", "share",
        "share-alt", "shopping-cart", "signal", "sort", "sort-by-alphabet",
        "sort-by-alphabet-alt", "sort-by-attributes", "sort-by-attributes-alt",
        "sort-by-order", "sort-by-order-alt", "sound-5-1", "sound-6-1", "sound-7-1",
        "sound-dolby", "sound-stereo", "star", "star-empty", "stats", "step-backward",
        "step-forward", "stop", "subtitles",

        "tag", "tags", "tasks", "text-height", "text-width", "th", "th-large", "th-list",
        "thumbs-down", "thumbs-up", "time", "tint", "tower", "transfer", "trash",
        "tree-conifer", "tree-deciduous",

        "unchecked", "upload", "usd", "user",

        "volume-down", "volume-off", "volume-up",

        "warning-sign", "wrench",

        "zoom-in", "zoom-out"
    ))) :
        $class .= $options['image'];
    else :
        $class .= 'question-sign';
    endif;

    switch ($options['size']) {
        case 'large':
            $class .= ' large';
            break;
        case 'small':
            $class .= ' small';
            break;
    };

    return '<i class="' . $class . '" aria-role="hidden"></i>';
}
add_shortcode( 'icon', 'rgc_icon' );

/**
 * Bullet [bullet name="floppy-disk"]This is a Bulleted Item[/bullet]
 */
function rgc_bullet( $atts, $content = null ) {
    $options = shortcode_atts(
        array(
            'image' => 'question-sign',
        ),
        $atts
    );

    return "\n<div class='media'>\n<div class='media-left'>" . do_shortcode('[icon image="' . $options['image'] . '"]') . "</div>\n"
        . "<div class='media-body'>\n" . do_shortcode($content) . "</div>\n</div><!-- /media -->";
}
add_shortcode( 'bullet', 'rgc_bullet' );