diff --git a/wp-content/plugins/mathjax-latex/class-mathjax-latex-admin.php b/wp-content/plugins/mathjax-latex/class-mathjax-latex-admin.php
new file mode 100644
index 0000000000000000000000000000000000000000..75746393a39335124077e6e3d884ffcdd31aa8cc
--- /dev/null
+++ b/wp-content/plugins/mathjax-latex/class-mathjax-latex-admin.php
@@ -0,0 +1,246 @@
+<?php
+
+/*
+ * The contents of this file are subject to the GPL License, Version 3.0.
+ *
+ * Copyright (C) 2013, Phillip Lord, Newcastle University
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+class MathJax_Latex_Admin {
+
+ public static $admin_tags = [
+ 'input' => [
+ 'type' => [],
+ 'name' => [],
+ 'id' => [],
+ 'disabled' => [],
+ 'value' => [],
+ 'checked' => [],
+ ],
+ 'select' => [
+ 'name' => [],
+ 'id' => [],
+ ],
+ 'option' => [
+ 'value' => [],
+ 'selected' => [],
+ ],
+ ];
+
+ public function __construct() {
+ add_action( 'admin_menu', [ $this, 'admin_page_init' ] );
+ }
+
+ public function admin_page_init() {
+ add_options_page( 'MathJax-LaTeX', 'MathJax-LaTeX', 'manage_options', 'kblog-mathjax-latex', [ $this, 'plugin_options_menu' ] );
+ }
+
+ public function plugin_options_menu() {
+ if ( ! current_user_can( 'manage_options' ) ) {
+ wp_die( __( 'You do not have sufficient permissions to access this page.' ) ); //xss ok
+ }
+
+ $this->table_head();
+
+ // save options if this is a valid post
+ if ( isset( $_POST['kblog_mathjax_latex_save_field'] ) && // input var okay
+ wp_verify_nonce( sanitize_text_field( wp_unslash( $_POST['kblog_mathjax_latex_save_field'] ) ), 'kblog_mathjax_latex_save_action' ) // input var okay
+ ) {
+ echo "<div class='updated settings-error' id='etting-error-settings_updated'><p><strong>Settings saved.</strong></p></div>\n";
+ $this->admin_save();
+ }
+
+ $checked_force_load = '';
+
+ if ( get_option( 'kblog_mathjax_force_load' ) ) {
+ $checked_force_load = 'checked="true"';
+ }
+
+ $this->admin_table_row(
+ 'Force Load',
+ 'Force the MathJax JavaScript to be loaded on every post. This removes the need to use the [mathjax] shortcode.',
+ "<input type='checkbox' name='kblog_mathjax_force_load' id='kblog_mathjax_force_load' value='1' $checked_force_load />",
+ ''
+ );
+
+ $selected_inline = get_option( 'kblog_mathjax_latex_inline' ) === 'inline' ? 'selected="true"' : '';
+ $selected_display = get_option( 'kblog_mathjax_latex_inline' ) === 'display' ? 'selected="true"' : '';
+
+ $syntax_input = <<<EOT
+<select name="kblog_mathjax_latex_inline" id="kblog_mathjax_latex_inline">
+<option value="inline" $selected_inline>Inline</option>
+<option value="display" $selected_display>Display</option>
+</select>
+EOT;
+
+ $this->admin_table_row(
+ 'Default [latex] syntax attribute.',
+ "By default, the [latex] shortcode renders equations using the MathJax 'inline' syntax.",
+ $syntax_input,
+ 'kblog_mathjax_latex_inline'
+ );
+
+ $wp_latex_disabled = method_exists( 'WP_LaTeX', 'init' ) ? "disabled='disable'" : '';
+ $wp_latex_disabled_warning = method_exists( 'WP_LaTeX', 'init' ) ? 'Disable wp-latex to use this syntax.' : '';
+
+ $use_wp_latex_syntax = get_option( 'kblog_mathjax_use_wplatex_syntax', false ) ? "checked='true'" : '';
+
+ $this->admin_table_row(
+ 'Use wp-latex syntax?',
+ "Allows use of the \$latex$ syntax, but conflicts with wp-latex. $wp_latex_disabled_warning",
+ "<input type='checkbox' name='kblog_mathjax_use_wplatex_syntax' id='kblog_mathjax_use_wplatex_syntax' $wp_latex_disabled $use_wp_latex_syntax value='1'/>",
+ 'kblog_mathjax_use_wplatex_syntax'
+ );
+
+ $use_cdn = get_option( 'kblog_mathjax_use_cdn', true ) ? 'checked="true"' : '';
+
+ $this->admin_table_row(
+ 'Use MathJax CDN Service?',
+ 'Allows use of the MathJax hosted content delivery network. By using this, you are agreeing to the <a href="http://www.mathjax.org/download/mathjax-cdn-terms-of-service/">MathJax CDN Terms of Service</a>.',
+ "<input type='checkbox' name='kblog_mathjax_use_cdn' id='use_cdn' value='1' $use_cdn/>",
+ 'use_cdn'
+ );
+
+ $custom_location_disabled = get_option( 'kblog_mathjax_use_cdn', true ) ? 'disabled="disabled"' : '';
+ $custom_location = "value='" . esc_attr( get_option( 'kblog_mathjax_custom_location', '' ) ) . "'";
+
+ $this->admin_table_row(
+ 'Custom MathJax location?',
+ 'If you are not using the MathJax CDN enter the location of your MathJax script.',
+ "<input type='textbox' name='kblog_mathjax_custom_location' id='kblog_mathjax_custom_location' $custom_location $custom_location_disabled>",
+ 'kblog_mathjax_custom_location'
+ );
+
+ $options = $this->config_options();
+
+ $select_string = "<select name='kblog_mathjax_config' id='kblog_mathjax_config'>\n";
+
+ foreach ( $options as $i ) {
+ $selected = get_option( 'kblog_mathjax_config', 'default' ) === $i ? "selected='true'" : '';
+ $select_string .= "<option value='$i' " . esc_attr( $selected ) . ">$i</option>\n";
+ }
+
+ $select_string .= '</select>';
+
+ $this->admin_table_row(
+ 'MathJax Configuration',
+ "See the <a href='http://docs.mathjax.org/en/v1.1-latest/configuration.html#loading'>MathJax documentation</a> for more details.",
+ $select_string,
+ 'kblog_mathjax_config'
+ );
+
+ $this->table_foot();
+ }
+
+ public function config_options() {
+ $options = [
+ 'default',
+ 'Accessible',
+ 'TeX-AMS_HTML',
+ 'TeX-AMS-MML_HTMLorMML',
+ ];
+
+ return $options;
+ }
+
+ public function admin_save() {
+ if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) {
+ check_ajax_referer( 'kblog_mathjax_latex_save_field', 'security' );
+ }
+
+ update_option( 'kblog_mathjax_force_load', array_key_exists( 'kblog_mathjax_force_load', $_POST ) ); // input var okay
+
+ if ( array_key_exists( 'kblog_mathjax_latex_inline', $_POST ) && isset( $_POST['kblog_mathjax_latex_inline'] ) && // input var okay
+ in_array( sanitize_text_field( wp_unslash( $_POST['kblog_mathjax_latex_inline'] ) ), [ 'inline', 'display' ], true ) // input var okay
+ ) {
+ update_option( 'kblog_mathjax_latex_inline', sanitize_text_field( wp_unslash( $_POST['kblog_mathjax_latex_inline'] ) ) ); // input var okay
+ }
+
+ update_option( 'kblog_mathjax_use_wplatex_syntax', array_key_exists( 'kblog_mathjax_use_wplatex_syntax', $_POST ) ); // input var okay
+
+ update_option( 'kblog_mathjax_use_cdn', array_key_exists( 'kblog_mathjax_use_cdn', $_POST ) ); // input var okay
+
+ if ( array_key_exists( 'kblog_mathjax_custom_location', $_POST ) && isset( $_POST['kblog_mathjax_custom_location'] ) ) { // input var okay
+ update_option( 'kblog_mathjax_custom_location', esc_url_raw( wp_unslash( $_POST['kblog_mathjax_custom_location'] ) ) ); // input var okay
+ }
+
+ if ( array_key_exists( 'kblog_mathjax_config', $_POST ) && isset( $_POST['kblog_mathjax_config'] ) && // input var okay
+ in_array( sanitize_text_field( wp_unslash( $_POST['kblog_mathjax_config'] ) ), $this->config_options(), true ) // input var okay
+ ) {
+ update_option( 'kblog_mathjax_config', sanitize_text_field( wp_unslash( $_POST['kblog_mathjax_config'] ) ) ); // input var okay
+ }
+ }
+
+ public function table_head() {
+ ?>
+ <div class='wrap' id='mathjax-latex-options'>
+ <h2>Mathjax-Latex by Kblog</h2>
+ <form id='mathjaxlatex' name='mathjaxlatex' action='' method='POST'>
+ <?php wp_nonce_field( 'kblog_mathjax_latex_save_action', 'kblog_mathjax_latex_save_field', true ); ?>
+ <table class='form-table'>
+ <caption class='screen-reader-text'>The following lists configuration options for the MathJax-LaTeX plugin.</caption>
+ <?php
+ }
+
+ public function table_foot() {
+ ?>
+ </table>
+
+ <p class="submit"><input type="submit" class="button button-primary" value="Save Changes"/></p>
+ </form>
+
+ </div>
+ <script type="text/javascript">
+ jQuery(function($) {
+ if (typeof($.fn.prop) !== 'function') {
+ return; // ignore this for sites with jquery < 1.6
+ }
+ // enable or disable the cdn input field when checking/unchuecking the "use cdn" checkbox
+ var cdn_check = $('#use_cdn'),
+ cdn_location = $('#kblog_mathjax_custom_location');
+
+ cdn_check.change(function() {
+ var checked = cdn_check.is(':checked');
+ cdn_location.prop('disabled', checked);
+ });
+ });
+ </script>
+ <?php
+ }
+
+ public function admin_table_row( $head, $comment, $input, $input_id ) {
+ ?>
+ <tr valign="top">
+ <th scope="row">
+ <label for="<?php echo esc_attr( $input_id ); ?>"><?php echo esc_html( $head ); ?></label>
+ </th>
+ <td>
+ <?php echo wp_kses( $input, self::$admin_tags ); ?>
+ <p class="description"><?php echo wp_kses_post( $comment ); ?></p>
+ </td>
+ </tr>
+ <?php
+ }
+} // class
+
+function mathjax_latex_admin_init() {
+ global $mathjax_latex_admin;
+ $mathjax_latex_admin = new MathJax_Latex_Admin();
+}
+
+if ( is_admin() ) {
+ mathjax_latex_admin_init();
+}
diff --git a/wp-content/plugins/mathjax-latex/class-mathjax-latex.php b/wp-content/plugins/mathjax-latex/class-mathjax-latex.php
new file mode 100644
index 0000000000000000000000000000000000000000..29a1da0988672292513f8a013152f93a4208b6ed
--- /dev/null
+++ b/wp-content/plugins/mathjax-latex/class-mathjax-latex.php
@@ -0,0 +1,291 @@
+<?php
+/*
+ * The contents of this file are subject to the LGPL License, Version 3.0.
+ *
+ * Copyright (C) 2010-2013, Phillip Lord, Newcastle University
+ * Copyright (C) 2010-2011, Simon Cockell, Newcastle University
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see http://www.gnu.org/licenses/.
+ */
+
+define( 'MATHJAX_VERSION', '1.3.10' );
+
+require_once __DIR__ . '/class-mathjax-latex-admin.php';
+
+class MathJax_Latex {
+ public static $add_script;
+ public static $block_script;
+ public static $mathml_tags = [
+ 'math' => [ 'class', 'id', 'style', 'dir', 'href', 'mathbackground', 'mathcolor', 'display', 'overflow', 'xmlns' ],
+ 'maction' => [ 'actiontype', 'class', 'id', 'style', 'href', 'mathbackground', 'mathcolor', 'selection' ],
+ 'maligngroup' => [],
+ 'malignmark' => [],
+ 'menclose' => [ 'class', 'id', 'style', 'href', 'mathbackground', 'mathcolor', 'notation' ],
+ 'merror' => [ 'class', 'id', 'style', 'href', 'mathbackground', 'mathcolor' ],
+ 'mfenced' => [ 'class', 'id', 'style', 'close', 'href', 'mathbackground', 'mathcolor', 'open', 'separators' ],
+ 'mfrac' => [ 'bevelled', 'class', 'id', 'style', 'denomalign', 'href', 'linethickness', 'mathbackground', 'mathcolor', 'numalign' ],
+ 'mglyph' => [ 'alt', 'class', 'id', 'style', 'height', 'href', 'mathbackground', 'src', 'valign', 'width' ],
+ 'mi' => [ 'class', 'id', 'style', 'href', 'mathbackground', 'mathcolor', 'mathsize', 'mathvariant' ],
+ 'mlabeledtr' => [ 'class', 'id', 'style', 'columnalign', 'groupalign', 'href', 'mathbackground', 'mathcolor', 'rowalign' ],
+ 'mlongdiv' => [],
+ 'mmultiscripts' => [ 'class', 'id', 'style', 'href', 'mathbackground', 'mathcolor', 'subscriptshift', 'superscriptshift' ],
+ 'mn' => [ 'class', 'id', 'style', 'dir', 'href', 'mathbackground', 'mathcolor', 'mathsize', 'mathvariant' ],
+ 'mo' => [ 'accent', 'class', 'id', 'style', 'dir', 'fence', 'form', 'href', 'largeop', 'lspace', 'mathbackground', 'mathcolor', 'mathsize', 'mathvariant', 'maxsize', 'minsize', 'moveablelimits', 'rspace', 'separator', 'stretchy', 'symmetric' ],
+ 'mover' => [ 'accent', 'align', 'class', 'id', 'style', 'href', 'mathbackground', 'mathcolor' ],
+ 'mpadded' => [ 'class', 'id', 'style', 'depth', 'height', 'href', 'lspace', 'mathbackground', 'mathcolor', 'voffset', 'width' ],
+ 'mphantom' => [ 'class', 'id', 'style', 'mathbackground' ],
+ 'mroot' => [ 'class', 'id', 'style', 'href', 'mathbackground', 'mathcolor' ],
+ 'mrow' => [ 'class', 'id', 'style', 'dir', 'href', 'mathbackground', 'mathcolor' ],
+ 'ms' => [ 'class', 'id', 'style', 'dir', 'lquote', 'href', 'mathbackground', 'mathcolor', 'mathsize', 'mathvariant', 'rquote' ],
+ 'mscarries' => [],
+ 'mscarry' => [],
+ 'msgroup' => [],
+ 'msline' => [],
+ 'mspace' => [ 'class', 'id', 'style', 'depth', 'height', 'linebreak', 'mathbackground', 'width' ],
+ 'msqrt' => [ 'class', 'id', 'style', 'href', 'mathbackground', 'mathcolor' ],
+ 'msrow' => [],
+ 'mstack' => [],
+ 'mstyle' => [ 'dir', 'decimalpoint', 'displaystyle', 'infixlinebreakstyle', 'scriptlevel', 'scriptminsize', 'scriptsizemultiplier' ],
+ 'msub' => [ 'class', 'id', 'style', 'mathbackground', 'mathcolor', 'subscriptshift' ],
+ 'msubsup' => [ 'class', 'id', 'style', 'href', 'mathbackground', 'mathcolor', 'subscriptshift', 'superscriptshift' ],
+ 'msup' => [ 'class', 'id', 'style', 'href', 'mathbackground', 'mathcolor', 'superscriptshift' ],
+ 'mtable' => [ 'class', 'id', 'style', 'align', 'alignmentscope', 'columnalign', 'columnlines', 'columnspacing', 'columnwidth', 'displaystyle', 'equalcolumns', 'equalrows', 'frame', 'framespacing', 'groupalign', 'href', 'mathbackground', 'mathcolor', 'minlabelspacing', 'rowalign', 'rowlines', 'rowspacing', 'side', 'width' ],
+ 'mtd' => [ 'class', 'id', 'style', 'columnalign', 'columnspan', 'groupalign', 'href', 'mathbackground', 'mathcolor', 'rowalign', 'rowspan' ],
+ 'mtext' => [ 'class', 'id', 'style', 'dir', 'href', 'mathbackground', 'mathcolor', 'mathsize', 'mathvariant' ],
+ 'mtr' => [ 'class', 'id', 'style', 'columnalign', 'groupalign', 'href', 'mathbackground', 'mathcolor', 'rowalign' ],
+ 'munder' => [ 'accentunder', 'align', 'class', 'id', 'style', 'mathbackground', 'mathcolor' ],
+ 'munderover' => [ 'accent', 'accentunder', 'align', 'class', 'id', 'style', 'href', 'mathbackground', 'mathcolor' ],
+ 'semantics' => [ 'definitionURL', 'encoding', 'cd', 'name', 'src' ],
+ 'annotation' => [ 'definitionURL', 'encoding', 'cd', 'name', 'src' ],
+ 'annotation-xml' => [ 'definitionURL', 'encoding', 'cd', 'name', 'src' ],
+ ];
+
+ public static function init() {
+ register_activation_hook( __FILE__, [ __CLASS__, 'mathjax_install' ] );
+ register_deactivation_hook( __FILE__, [ __CLASS__, 'mathjax_uninstall' ] );
+
+ if ( get_option( 'kblog_mathjax_force_load' ) ) {
+ self::$add_script = true;
+ }
+
+ add_shortcode( 'mathjax', [ __CLASS__, 'mathjax_shortcode' ] );
+ add_shortcode( 'nomathjax', [ __CLASS__, 'nomathjax_shortcode' ] );
+ add_shortcode( 'latex', [ __CLASS__, 'latex_shortcode' ] );
+ add_action( 'wp_footer', [ __CLASS__, 'add_script' ] );
+ add_filter( 'script_loader_tag', [ __CLASS__, 'script_loader_tag' ], 10, 3 );
+
+ if ( get_option( 'kblog_mathjax_use_wplatex_syntax' ) ) {
+ add_filter( 'the_content', [ __CLASS__, 'inline_to_shortcode' ] );
+ }
+
+ add_filter( 'plugin_action_links', [ __CLASS__, 'mathjax_settings_link' ], 9, 2 );
+
+ add_filter( 'the_content', [ __CLASS__, 'filter_br_tags_on_math' ] );
+
+ add_action( 'init', [ __CLASS__, 'allow_mathml_tags' ] );
+ add_filter( 'tiny_mce_before_init', [ __CLASS__, 'allow_mathml_tags_in_tinymce' ] );
+ }
+
+ // registers default options
+ public static function mathjax_install() {
+ add_option( 'kblog_mathjax_force_load', false );
+ add_option( 'kblog_mathjax_latex_inline', 'inline' );
+ add_option( 'kblog_mathjax_use_wplatex_syntax', false );
+ add_option( 'kblog_mathjax_use_cdn', true );
+ add_option( 'kblog_mathjax_custom_location', false );
+ add_option( 'kblog_mathjax_config', 'default' );
+ }
+
+ public static function mathjax_uninstall() {
+ delete_option( 'kblog_mathjax_force_load' );
+ delete_option( 'kblog_mathjax_latex_inline' );
+ delete_option( 'kblog_mathjax_use_wplatex_syntax' );
+ delete_option( 'kblog_mathjax_use_cdn' );
+ delete_option( 'kblog_mathjax_custom_location' );
+ delete_option( 'kblog_mathjax_config' );
+ }
+
+ public static function mathjax_shortcode( $atts, $content ) {
+ self::$add_script = true;
+ }
+
+ public static function nomathjax_shortcode( $atts, $content ) {
+ self::$block_script = true;
+ }
+
+ public static function latex_shortcode( $atts, $content ) {
+ self::$add_script = true;
+
+ // this gives us an optional "syntax" attribute, which defaults to "inline", but can also be "display"
+ $shortcode_atts = shortcode_atts(
+ [
+ 'syntax' => get_option( 'kblog_mathjax_latex_inline' ),
+ ], $atts
+ );
+
+ if ( 'inline' === $shortcode_atts['syntax'] ) {
+ return '\(' . $content . '\)';
+ } elseif ( 'display' === $shortcode_atts['syntax'] ) {
+ return '\[' . $content . '\]';
+ }
+ }
+
+ public static function add_script() {
+ if ( ! self::$add_script ) {
+ return;
+ }
+
+ if ( self::$block_script ) {
+ return;
+ }
+
+ // initialise option for existing MathJax-LaTeX users
+ if ( get_option( 'kblog_mathjax_use_cdn' ) || ! get_option( 'kblog_mathjax_custom_location' ) ) {
+ $mathjax_location = 'https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.2/MathJax.js';
+ } else {
+ $mathjax_location = get_option( 'kblog_mathjax_custom_location' );
+ }
+
+ $mathjax_url = $mathjax_location . '?config=' . get_option( 'kblog_mathjax_config' );
+
+ wp_enqueue_script( 'mathjax', $mathjax_url, false, MATHJAX_VERSION, false );
+
+ $mathjax_config = apply_filters( 'mathjax_config', [] );
+ if ( $mathjax_config ) {
+ wp_add_inline_script( 'mathjax', 'MathJax.Hub.Config(' . wp_json_encode( $mathjax_config ) . ');' );
+ }
+ }
+
+
+ /**
+ * Set the script tag to have type text/x-mathjax-config
+ *
+ * @param string $tag The `<script>` tag for the enqueued script.
+ * @param string $handle The script's registered handle.
+ * @param string $src The script's source URL.
+ *
+ * @return string $tag
+ */
+ public static function script_loader_tag( $tag, $handle = null, $src = null ) {
+ if ( 'mathjax' === $handle ) {
+ // replace the <script> tag for the inline script, but not for the <script> tag with src=""
+ return str_replace( "<script type='text/javascript'>", "<script type='text/x-mathjax-config'>", $tag );
+ }
+
+ return $tag;
+ }
+
+ public static function inline_to_shortcode( $content ) {
+ if ( false === strpos( $content, '$latex' ) ) {
+ return $content;
+ }
+
+ self::$add_script = true;
+
+ return preg_replace_callback( '#\$latex[= ](.*?[^\\\\])\$#', [ __CLASS__, 'inline_to_shortcode_callback' ], $content );
+ }
+
+ public static function inline_to_shortcode_callback( $matches ) {
+
+ //
+ // Also support wp-latex syntax. This includes the ability to set background and foreground
+ // colour, which we can ignore.
+ //
+
+ if ( preg_match( '/.+((?:&|&)s=(-?[0-4])).*/i', $matches[1], $s_matches ) ) {
+ $matches[1] = str_replace( $s_matches[1], '', $matches[1] );
+ }
+
+ if ( preg_match( '/.+((?:&|&)fg=([0-9a-f]{6})).*/i', $matches[1], $fg_matches ) ) {
+ $matches[1] = str_replace( $fg_matches[1], '', $matches[1] );
+ }
+
+ if ( preg_match( '/.+((?:&|&)bg=([0-9a-f]{6})).*/i', $matches[1], $bg_matches ) ) {
+ $matches[1] = str_replace( $bg_matches[1], '', $matches[1] );
+ }
+
+ return "[latex]{$matches[1]}[/latex]";
+ }
+
+ // add a link to settings on the plugin management page
+ public static function mathjax_settings_link( $links, $file ) {
+ if ( 'mathjax-latex/mathjax-latex.php' === $file && function_exists( 'admin_url' ) ) {
+ $settings_link = '<a href="' . esc_url( admin_url( 'options-general.php?page=kblog-mathjax-latex' ) ) . '">' . esc_html__( 'Settings' ) . '</a>';
+ array_unshift( $links, $settings_link );
+ }
+ return $links;
+ }
+
+ /**
+ * Removes the <br /> tags inside math tags
+ *
+ * @param $content
+ * @return string without <br /> tags
+ */
+ public static function filter_br_tags_on_math( $content ) {
+ $filtered_content = preg_replace_callback(
+ '/(<math.*>.*<\/math>)/isU',
+ function( $matches ) {
+ return str_replace( array( '<br/>', '<br />', '<br>' ), '', $matches[0] );
+ },
+ $content
+ );
+ return null === $filtered_content ? $content : $filtered_content;
+ }
+
+ /**
+ * Allow MathML tags within WordPress
+ * http://vip.wordpress.com/documentation/register-additional-html-attributes-for-tinymce-and-wp-kses/
+ * https://developer.mozilla.org/en-US/docs/Web/MathML/Element
+ */
+ public static function allow_mathml_tags() {
+ global $allowedposttags;
+
+ foreach ( self::$mathml_tags as $tag => $attributes ) {
+ $allowedposttags[ $tag ] = [];
+
+ foreach ( $attributes as $a ) {
+ $allowedposttags[ $tag ][ $a ] = true;
+ }
+ }
+ }
+
+ /**
+ * Ensure that the MathML tags will not be removed
+ * by the TinyMCE editor
+ */
+ public static function allow_mathml_tags_in_tinymce( $options ) {
+
+ $extended_tags = [];
+
+ foreach ( self::$mathml_tags as $tag => $attributes ) {
+ if ( ! empty( $attributes ) ) {
+ $tag = $tag . '[' . implode( '|', $attributes ) . ']';
+ }
+
+ $extended_tags[] = $tag;
+ }
+
+ if ( ! isset( $options['extended_valid_elements'] ) ) {
+ $options['extended_valid_elements'] = '';
+ }
+
+ $options['extended_valid_elements'] .= ',' . implode( ',', $extended_tags );
+ $options['extended_valid_elements'] = trim( $options['extended_valid_elements'], ',' );
+
+ return $options;
+ }
+}
+
+MathJax_Latex::init();
diff --git a/wp-content/plugins/mathjax-latex/mathjax-latex.php b/wp-content/plugins/mathjax-latex/mathjax-latex.php
index ae19036e9b6ad3e876b83a24328d3227f3cb37ba..143d1e240c8dc4c940e1cf2e5706d04333c134f9 100644
--- a/wp-content/plugins/mathjax-latex/mathjax-latex.php
+++ b/wp-content/plugins/mathjax-latex/mathjax-latex.php
@@ -2,7 +2,7 @@
/**
* Plugin Name: MathJax-LaTeX
* Description: Transform latex equations in JavaScript using mathjax
- * Version: 1.3.8
+ * Version: 1.3.10
* Author: Phillip Lord, Simon Cockell, Paul Schreiber
* Author URI: http://knowledgeblog.org
*
@@ -12,292 +12,4 @@
* Paul Schreiber (paulschreiber@gmail.com)
*/
-/*
- * The contents of this file are subject to the LGPL License, Version 3.0.
- *
- * Copyright (C) 2010-2013, Phillip Lord, Newcastle University
- * Copyright (C) 2010-2011, Simon Cockell, Newcastle University
- *
- * This program is free software: you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or (at your
- * option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
- * for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program. If not, see http://www.gnu.org/licenses/.
- */
-
-define( 'MATHJAX_VERSION', '1.3.8' );
-
-require_once dirname( __FILE__ ) . '/mathjax-latex-admin.php';
-
-class MathJax {
- public static $add_script;
- public static $block_script;
- public static $mathml_tags = array(
- 'math' => array( 'class', 'id', 'style', 'dir', 'href', 'mathbackground', 'mathcolor', 'display', 'overflow', 'xmlns' ),
- 'maction' => array( 'actiontype', 'class', 'id', 'style', 'href', 'mathbackground', 'mathcolor', 'selection' ),
- 'maligngroup' => array(),
- 'malignmark' => array(),
- 'menclose' => array( 'class', 'id', 'style', 'href', 'mathbackground', 'mathcolor', 'notation' ),
- 'merror' => array( 'class', 'id', 'style', 'href', 'mathbackground', 'mathcolor' ),
- 'mfenced' => array( 'class', 'id', 'style', 'close', 'href', 'mathbackground', 'mathcolor', 'open', 'separators' ),
- 'mfrac' => array( 'bevelled', 'class', 'id', 'style', 'denomalign', 'href', 'linethickness', 'mathbackground', 'mathcolor', 'numalign' ),
- 'mglyph' => array( 'alt', 'class', 'id', 'style', 'height', 'href', 'mathbackground', 'src', 'valign', 'width' ),
- 'mi' => array( 'class', 'id', 'style', 'href', 'mathbackground', 'mathcolor', 'mathsize', 'mathvariant' ),
- 'mlabeledtr' => array( 'class', 'id', 'style', 'columnalign', 'groupalign', 'href', 'mathbackground', 'mathcolor', 'rowalign' ),
- 'mlongdiv' => array(),
- 'mmultiscripts' => array( 'class', 'id', 'style', 'href', 'mathbackground', 'mathcolor', 'subscriptshift', 'superscriptshift' ),
- 'mn' => array( 'class', 'id', 'style', 'dir', 'href', 'mathbackground', 'mathcolor', 'mathsize', 'mathvariant' ),
- 'mo' => array( 'accent', 'class', 'id', 'style', 'dir', 'fence', 'form', 'href', 'largeop', 'lspace', 'mathbackground', 'mathcolor', 'mathsize', 'mathvariant', 'maxsize', 'minsize', 'moveablelimits', 'rspace', 'separator', 'stretchy', 'symmetric' ),
- 'mover' => array( 'accent', 'align', 'class', 'id', 'style', 'href', 'mathbackground', 'mathcolor' ),
- 'mpadded' => array( 'class', 'id', 'style', 'depth', 'height', 'href', 'lspace', 'mathbackground', 'mathcolor', 'voffset', 'width' ),
- 'mphantom' => array( 'class', 'id', 'style', 'mathbackground' ),
- 'mroot' => array( 'class', 'id', 'style', 'href', 'mathbackground', 'mathcolor' ),
- 'mrow' => array( 'class', 'id', 'style', 'dir', 'href', 'mathbackground', 'mathcolor' ),
- 'ms' => array( 'class', 'id', 'style', 'dir', 'lquote', 'href', 'mathbackground', 'mathcolor', 'mathsize', 'mathvariant', 'rquote' ),
- 'mscarries' => array(),
- 'mscarry' => array(),
- 'msgroup' => array(),
- 'msline' => array(),
- 'mspace' => array( 'class', 'id', 'style', 'depth', 'height', 'linebreak', 'mathbackground', 'width' ),
- 'msqrt' => array( 'class', 'id', 'style', 'href', 'mathbackground', 'mathcolor' ),
- 'msrow' => array(),
- 'mstack' => array(),
- 'mstyle' => array( 'dir', 'decimalpoint', 'displaystyle', 'infixlinebreakstyle', 'scriptlevel', 'scriptminsize', 'scriptsizemultiplier' ),
- 'msub' => array( 'class', 'id', 'style', 'mathbackground', 'mathcolor', 'subscriptshift' ),
- 'msubsup' => array( 'class', 'id', 'style', 'href', 'mathbackground', 'mathcolor', 'subscriptshift', 'superscriptshift' ),
- 'msup' => array( 'class', 'id', 'style', 'href', 'mathbackground', 'mathcolor', 'superscriptshift' ),
- 'mtable' => array( 'class', 'id', 'style', 'align', 'alignmentscope', 'columnalign', 'columnlines', 'columnspacing', 'columnwidth', 'displaystyle', 'equalcolumns', 'equalrows', 'frame', 'framespacing', 'groupalign', 'href', 'mathbackground', 'mathcolor', 'minlabelspacing', 'rowalign', 'rowlines', 'rowspacing', 'side', 'width' ),
- 'mtd' => array( 'class', 'id', 'style', 'columnalign', 'columnspan', 'groupalign', 'href', 'mathbackground', 'mathcolor', 'rowalign', 'rowspan' ),
- 'mtext' => array( 'class', 'id', 'style', 'dir', 'href', 'mathbackground', 'mathcolor', 'mathsize', 'mathvariant' ),
- 'mtr' => array( 'class', 'id', 'style', 'columnalign', 'groupalign', 'href', 'mathbackground', 'mathcolor', 'rowalign' ),
- 'munder' => array( 'accentunder', 'align', 'class', 'id', 'style', 'mathbackground', 'mathcolor' ),
- 'munderover' => array( 'accent', 'accentunder', 'align', 'class', 'id', 'style', 'href', 'mathbackground', 'mathcolor' ),
- 'semantics' => array( 'definitionURL', 'encoding', 'cd', 'name', 'src' ),
- 'annotation' => array( 'definitionURL', 'encoding', 'cd', 'name', 'src' ),
- 'annotation-xml' => array( 'definitionURL', 'encoding', 'cd', 'name', 'src' ),
- );
-
- public static function init() {
- register_activation_hook( __FILE__, array( __CLASS__, 'mathjax_install' ) );
- register_deactivation_hook( __FILE__, array( __CLASS__, 'mathjax_uninstall' ) );
-
- if ( get_option( 'kblog_mathjax_force_load' ) ) {
- self::$add_script = true;
- }
-
- add_shortcode( 'mathjax', array( __CLASS__, 'mathjax_shortcode' ) );
- add_shortcode( 'nomathjax', array( __CLASS__, 'nomathjax_shortcode' ) );
- add_shortcode( 'latex', array( __CLASS__, 'latex_shortcode' ) );
- add_action( 'wp_footer', array( __CLASS__, 'add_script' ) );
- add_filter( 'script_loader_tag', array( __CLASS__, 'script_loader_tag' ), 10, 3 );
-
- if ( get_option( 'kblog_mathjax_use_wplatex_syntax' ) ) {
- add_filter( 'the_content', array( __CLASS__, 'inline_to_shortcode' ) );
- }
-
- add_filter( 'plugin_action_links', array( __CLASS__, 'mathjax_settings_link' ), 9, 2 );
-
- add_filter( 'the_content', array( __CLASS__, 'filter_br_tags_on_math' ) );
-
- add_action( 'init', array( __CLASS__, 'allow_mathml_tags' ) );
- add_filter( 'tiny_mce_before_init', array( __CLASS__, 'allow_mathml_tags_in_tinymce' ) );
- }
-
- // registers default options
- public static function mathjax_install() {
- add_option( 'kblog_mathjax_force_load', false );
- add_option( 'kblog_mathjax_latex_inline', 'inline' );
- add_option( 'kblog_mathjax_use_wplatex_syntax', false );
- add_option( 'kblog_mathjax_use_cdn', true );
- add_option( 'kblog_mathjax_custom_location', false );
- add_option( 'kblog_mathjax_config', 'default' );
- }
-
- public static function mathjax_uninstall() {
- delete_option( 'kblog_mathjax_force_load' );
- delete_option( 'kblog_mathjax_latex_inline' );
- delete_option( 'kblog_mathjax_use_wplatex_syntax' );
- delete_option( 'kblog_mathjax_use_cdn' );
- delete_option( 'kblog_mathjax_custom_location' );
- delete_option( 'kblog_mathjax_config' );
- }
-
- public static function mathjax_shortcode( $atts, $content ) {
- self::$add_script = true;
- }
-
- public static function nomathjax_shortcode( $atts, $content ) {
- self::$block_script = true;
- }
-
- public static function latex_shortcode( $atts, $content ) {
- self::$add_script = true;
-
- // this gives us an optional "syntax" attribute, which defaults to "inline", but can also be "display"
- $shortcode_atts = shortcode_atts(
- array(
- 'syntax' => get_option( 'kblog_mathjax_latex_inline' ),
- ), $atts
- );
-
- if ( 'inline' === $shortcode_atts['syntax'] ) {
- return '\(' . $content . '\)';
- } elseif ( 'display' === $shortcode_atts['syntax'] ) {
- return '\[' . $content . '\]';
- }
- }
-
- public static function add_script() {
- if ( ! self::$add_script ) {
- return;
- }
-
- if ( self::$block_script ) {
- return;
- }
-
- // initialise option for existing MathJax-LaTeX users
- if ( get_option( 'kblog_mathjax_use_cdn' ) || ! get_option( 'kblog_mathjax_custom_location' ) ) {
- $mathjax_location = 'https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.2/MathJax.js';
- } else {
- $mathjax_location = get_option( 'kblog_mathjax_custom_location' );
- }
-
- $mathjax_url = $mathjax_location . '?config=' . get_option( 'kblog_mathjax_config' );
-
- wp_enqueue_script( 'mathjax', $mathjax_url, false, MATHJAX_VERSION, false );
-
- $mathjax_config = apply_filters( 'mathjax_config', array() );
- if ( $mathjax_config ) {
- wp_add_inline_script( 'mathjax', 'MathJax.Hub.Config(' . wp_json_encode( $mathjax_config ) . ');' );
- }
- }
-
-
- /**
- * Set the script tag to have type text/x-mathjax-config
- *
- * @param string $tag The `<script>` tag for the enqueued script.
- * @param string $handle The script's registered handle.
- * @param string $src The script's source URL.
- *
- * @return string $tag
- */
- public static function script_loader_tag( $tag, $handle = null, $src = null ) {
- if ( 'mathjax' === $handle ) {
- // replace the <script> tag for the inline script, but not for the <script> tag with src=""
- return str_replace( "<script type='text/javascript'>", "<script type='text/x-mathjax-config'>", $tag );
- }
-
- return $tag;
- }
-
- public static function inline_to_shortcode( $content ) {
- if ( false === strpos( $content, '$latex' ) ) {
- return $content;
- }
-
- self::$add_script = true;
-
- return preg_replace_callback( '#\$latex[= ](.*?[^\\\\])\$#', array( __CLASS__, 'inline_to_shortcode_callback' ), $content );
- }
-
- public static function inline_to_shortcode_callback( $matches ) {
-
- //
- // Also support wp-latex syntax. This includes the ability to set background and foreground
- // colour, which we can ignore.
- //
-
- if ( preg_match( '/.+((?:&|&)s=(-?[0-4])).*/i', $matches[1], $s_matches ) ) {
- $matches[1] = str_replace( $s_matches[1], '', $matches[1] );
- }
-
- if ( preg_match( '/.+((?:&|&)fg=([0-9a-f]{6})).*/i', $matches[1], $fg_matches ) ) {
- $matches[1] = str_replace( $fg_matches[1], '', $matches[1] );
- }
-
- if ( preg_match( '/.+((?:&|&)bg=([0-9a-f]{6})).*/i', $matches[1], $bg_matches ) ) {
- $matches[1] = str_replace( $bg_matches[1], '', $matches[1] );
- }
-
- return "[latex]{$matches[1]}[/latex]";
- }
-
- // add a link to settings on the plugin management page
- public static function mathjax_settings_link( $links, $file ) {
- if ( 'mathjax-latex/mathjax-latex.php' === $file && function_exists( 'admin_url' ) ) {
- $settings_link = '<a href="' . esc_url( admin_url( 'options-general.php?page=kblog-mathjax-latex' ) ) . '">' . esc_html__( 'Settings' ) . '</a>';
- array_unshift( $links, $settings_link );
- }
- return $links;
- }
-
- /**
- * Removes the <br /> tags inside math tags
- *
- * @param $content
- * @return string without <br /> tags
- */
- public static function filter_br_tags_on_math( $content ) {
- return preg_replace_callback(
- '/(<math.*>.*<\/math>)/isU',
- function( $matches ) {
- return str_replace( array( '<br/>', '<br />', '<br>' ), '', $matches[0] );
- },
- $content
- );
- }
-
- /**
- * Allow MathML tags within WordPress
- * http://vip.wordpress.com/documentation/register-additional-html-attributes-for-tinymce-and-wp-kses/
- * https://developer.mozilla.org/en-US/docs/Web/MathML/Element
- */
- public static function allow_mathml_tags() {
- global $allowedposttags;
-
- foreach ( self::$mathml_tags as $tag => $attributes ) {
- $allowedposttags[ $tag ] = array();
-
- foreach ( $attributes as $a ) {
- $allowedposttags[ $tag ][ $a ] = true;
- }
- }
- }
-
- /**
- * Ensure that the MathML tags will not be removed
- * by the TinyMCE editor
- */
- public static function allow_mathml_tags_in_tinymce( $options ) {
-
- $extended_tags = array();
-
- foreach ( self::$mathml_tags as $tag => $attributes ) {
- if ( ! empty( $attributes ) ) {
- $tag = $tag . '[' . implode( '|', $attributes ) . ']';
- }
-
- $extended_tags[] = $tag;
- }
-
- if ( ! isset( $options['extended_valid_elements'] ) ) {
- $options['extended_valid_elements'] = '';
- }
-
- $options['extended_valid_elements'] .= ',' . implode( ',', $extended_tags );
- $options['extended_valid_elements'] = trim( $options['extended_valid_elements'], ',' );
-
- return $options;
- }
-}
-
-MathJax::init();
+require_once __DIR__ . '/class-mathjax-latex.php';
diff --git a/wp-content/plugins/mathjax-latex/readme.txt b/wp-content/plugins/mathjax-latex/readme.txt
index 6c1a451a169f758895678aadde529b175ed5efdc..e71307860067213c173ee648091d868214ed03e4 100644
--- a/wp-content/plugins/mathjax-latex/readme.txt
+++ b/wp-content/plugins/mathjax-latex/readme.txt
@@ -4,8 +4,8 @@ Contributors: philliplord, sjcockell, knowledgeblog, d_swan, paulschreiber, jwen
Tags: mathematics, math, latex, mathml, mathjax, science, res-comms, scholar, academic
Requires at least: 3.0
Tested up to: 4.9.1
-Stable tag: 1.3.8
-Requires PHP: 5.4.0
+Stable tag: 1.3.10
+Requires PHP: 7.0.0
License: GPLv2
This plugin enables mathjax (http://www.mathjax.org) functionality for
@@ -34,6 +34,16 @@ MathJax-LaTeX is developed on [GitHub](https://github.com/phillord/mathjax-latex
== Changelog ==
+= 1.3.10 =
+
+1. Rename class files, per PHPCS
+2. Gracefully handle null values in filter_br_tags_on_math. Thanks to Yang Liu.
+
+= 1.3.9 =
+
+1. Code style changes, per PHPCS 3.3.0 and WPCS 0.14.1
+1. Use PHP 7 short array syntax
+
= 1.3.8 =
1. Code style changes, per PHPCS 3.1.1 and WPCS 0.14