get(MCI_Footnotes_Settings::C_INT_EXPERT_LOOKUP_THE_TITLE_PRIORITY_LEVEL));
$p_int_TheContentPriority = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_EXPERT_LOOKUP_THE_CONTENT_PRIORITY_LEVEL));
$p_int_TheExcerptPriority = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_EXPERT_LOOKUP_THE_EXCERPT_PRIORITY_LEVEL));
$p_int_WidgetTitlePriority = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_EXPERT_LOOKUP_WIDGET_TITLE_PRIORITY_LEVEL));
$p_int_WidgetTextPriority = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_EXPERT_LOOKUP_WIDGET_TEXT_PRIORITY_LEVEL));
// PHP_INT_MAX can be set by -1:
$p_int_TheTitlePriority = ($p_int_TheTitlePriority == -1) ? PHP_INT_MAX : $p_int_TheTitlePriority ;
$p_int_TheContentPriority = ($p_int_TheContentPriority == -1) ? PHP_INT_MAX : $p_int_TheContentPriority ;
$p_int_TheExcerptPriority = ($p_int_TheExcerptPriority == -1) ? PHP_INT_MAX : $p_int_TheExcerptPriority ;
$p_int_WidgetTitlePriority = ($p_int_WidgetTitlePriority == -1) ? PHP_INT_MAX : $p_int_WidgetTitlePriority;
$p_int_WidgetTextPriority = ($p_int_WidgetTextPriority == -1) ? PHP_INT_MAX : $p_int_WidgetTextPriority ;
// append custom css to the header
add_filter('wp_head', array($this, "wp_head"), PHP_INT_MAX);
// append the love and share me slug to the footer
add_filter('wp_footer', array($this, "wp_footer"), PHP_INT_MAX);
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_EXPERT_LOOKUP_THE_TITLE))) {
add_filter('the_title', array($this, "the_title"), $p_int_TheTitlePriority);
}
// configurable priority level for reference container relative positioning; default 98:
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_EXPERT_LOOKUP_THE_CONTENT))) {
add_filter('the_content', array($this, "the_content"), $p_int_TheContentPriority);
/**
* HOOK FOR CATEGORY PAGES
*
* Hooks: support footnotes on category pages, thanks to @vitaefit bug report, thanks to @misfist code contribution
* @since 2.5.0
* @datestamp 2021-01-05T1402+0100
*
* @reporter @vitaefit
* @bugreport https://wordpress.org/support/topic/footnote-doesntwork-on-category-page/
*
* @contributor @misfist
* @source https://wordpress.org/support/topic/footnote-doesntwork-on-category-page/#post-13864859
*
* Category pages can have rich HTML content in a term description with article status.
* For this to happen, WordPress’ built-in partial HTML blocker needs to be disabled.
* @link https://docs.woocommerce.com/document/allow-html-in-term-category-tag-descriptions/
*/
add_filter('term_description', array($this, "the_content"), $p_int_TheContentPriority);
/**
* HOOK FOR POPUP MAKER POPUPS
*
* Hooks: support footnotes in Popup Maker popups, thanks to @squatcher bug report
* @since 2.5.1
* @datestamp 2021-01-18T2038+0100
*
* @reporter @squatcher
* @bugreport https://wordpress.org/support/topic/footnotes-use-in-popup-maker/
*/
add_filter('pum_popup_content', array($this, "the_content"), $p_int_TheContentPriority);
}
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_EXPERT_LOOKUP_THE_EXCERPT))) {
add_filter('the_excerpt', array($this, "the_excerpt"), $p_int_TheExcerptPriority);
}
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_EXPERT_LOOKUP_WIDGET_TITLE))) {
add_filter('widget_title', array($this, "widget_title"), $p_int_WidgetTitlePriority);
}
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_EXPERT_LOOKUP_WIDGET_TEXT))) {
add_filter('widget_text', array($this, "widget_text"), $p_int_WidgetTextPriority);
}
/**
* THE the_post HOOK
*
* support the_post hook in response to user request for custom post types
* @since 1.5.4
* @accountable @aricura
* @link https://wordpress.org/support/topic/doesnt-work-in-custon-post-types/#post-5339110
*
* remove the_post hook after its default enabling caused multiple issues
* @edit 2.0.9
* @accountable @pewgeuges
* @datestamp 2020-11-08T1839+0100
* @link https://wordpress.org/support/topic/change-the-position-5/page/2/#post-13630114
* @link https://wordpress.org/support/topic/footnotes-appearing-in-header/#post-13630303
* @link https://wordpress.org/support/topic/footnotes-appearing-in-header/page/2/#post-13630799
* @link https://wordpress.org/support/topic/no-footnotes-anymore/#post-13813233
*/
// reset stored footnotes when displaying the header
self::$a_arr_Footnotes = array();
self::$a_bool_AllowLoveMe = true;
}
/**
* Outputs the custom css to the header of the public page.
*
* @author Stefan Herndler
* @since 1.5.0
*
* @edited
*
* @since 2.1.1 Reference container: fix start pages by making its display optional, thanks to @dragon013 bug report
* @since 2.1.1 option to hide ref container from start page
* @since 2.1.1 script for alternative tooltips
* @since 2.1.3 raise settings priority to override theme style sheets
* @since 2.1.4 tootip font size and backlink column width settings
* @since 2.2.5 options for label element and label bottom border, thanks to @markhillyer 2020-12-18T1447+0100
* @link https://wordpress.org/support/topic/how-do-i-eliminate-the-horizontal-line-beneath-the-reference-container-heading/
* @since 2.3.0 Reference container: convert top padding to margin and make it a setting, thanks to @hamshe
* @link https://wordpress.org/support/topic/reference-container-in-elementor/#post-13786635
*/
public function wp_head() {
// insert start tag without switching out of PHP:
echo "\r\n\r\n";
// alternative tooltip script printed formatted not minified:
if (self::$a_bool_AlternativeTooltipsEnabled) {
?>
get(MCI_Footnotes_Settings::C_STR_REFERENCE_CONTAINER_POSITION) == "footer") {
echo $this->ReferenceContainer();
}
// get setting for love and share this plugin
$l_str_LoveMeIndex = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_LOVE);
// check if the admin allows to add a link to the footer
if (empty($l_str_LoveMeIndex) || strtolower($l_str_LoveMeIndex) == "no" || !self::$a_bool_AllowLoveMe) {
return;
}
// set a hyperlink to the word "footnotes" in the Love slug
$l_str_LinkedName = sprintf('%s', MCI_Footnotes_Config::C_STR_PLUGIN_PUBLIC_NAME);
// get random love me text
if (strtolower($l_str_LoveMeIndex) == "random") {
$l_str_LoveMeIndex = "text-" . rand(1,7);
}
switch ($l_str_LoveMeIndex) {
// options named wrt backcompat, simplest is default:
case "text-1": $l_str_LoveMeText = sprintf(__('I %2$s %1$s', MCI_Footnotes_Config::C_STR_PLUGIN_NAME), $l_str_LinkedName, MCI_Footnotes_Config::C_STR_LOVE_SYMBOL); break;
case "text-2": $l_str_LoveMeText = sprintf(__('This website uses the awesome %s plugin.', MCI_Footnotes_Config::C_STR_PLUGIN_NAME), $l_str_LinkedName); break;
case "text-4": $l_str_LoveMeText = sprintf('%s %s', $l_str_LinkedName, MCI_Footnotes_Config::C_STR_LOVE_SYMBOL); break;
case "text-5": $l_str_LoveMeText = sprintf('%s %s', MCI_Footnotes_Config::C_STR_LOVE_SYMBOL, $l_str_LinkedName); break;
case "text-6": $l_str_LoveMeText = sprintf(__('This website uses %s.', MCI_Footnotes_Config::C_STR_PLUGIN_NAME), $l_str_LinkedName); break;
case "text-7": $l_str_LoveMeText = sprintf(__('This website uses the %s plugin.', MCI_Footnotes_Config::C_STR_PLUGIN_NAME), $l_str_LinkedName); break;
case "text-3": default: $l_str_LoveMeText = sprintf('%s', $l_str_LinkedName); break;
}
echo sprintf('
%s
', $l_str_LoveMeText);
}
/**
* Replaces footnotes in the post/page title.
*
* @author Stefan Herndler
* @since 1.5.0
* @param string $p_str_Content Widget content.
* @return string Content with replaced footnotes.
*/
public function the_title($p_str_Content) {
// appends the reference container if set to "post_end"
return $this->exec($p_str_Content, false);
}
/**
* Replaces footnotes in the content of the current page/post.
*
* @author Stefan Herndler
* @since 1.5.0
* @param string $p_str_Content Page/Post content.
* @return string Content with replaced footnotes.
*/
public function the_content($p_str_Content) {
// appends the reference container if set to "post_end"
return $this->exec($p_str_Content, MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_REFERENCE_CONTAINER_POSITION) == "post_end" ? true : false);
}
/**
* Replaces footnotes in the excerpt of the current page/post.
*
* @author Stefan Herndler
* @since 1.5.0
* @param string $p_str_Content Page/Post content.
* @return string Content with replaced footnotes.
*/
public function the_excerpt($p_str_Content) {
return $this->exec($p_str_Content, false, !MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_IN_EXCERPT)));
}
/**
* Replaces footnotes in the widget title.
*
* @author Stefan Herndler
* @since 1.5.0
* @param string $p_str_Content Widget content.
* @return string Content with replaced footnotes.
*/
public function widget_title($p_str_Content) {
// appends the reference container if set to "post_end"
return $this->exec($p_str_Content, false);
}
/**
* Replaces footnotes in the content of the current widget.
*
* @author Stefan Herndler
* @since 1.5.0
* @param string $p_str_Content Widget content.
* @return string Content with replaced footnotes.
*/
public function widget_text($p_str_Content) {
// appends the reference container if set to "post_end"
return $this->exec($p_str_Content, MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_REFERENCE_CONTAINER_POSITION) == "post_end" ? true : false);
}
/**
* Replaces footnotes in each Content var of the current Post object.
*
* @author Stefan Herndler
* @since 1.5.4
* @param array|WP_Post $p_mixed_Posts
*/
public function the_post(&$p_mixed_Posts) {
// single WP_Post object received
if (!is_array($p_mixed_Posts)) {
$p_mixed_Posts = $this->replacePostObject($p_mixed_Posts);
return;
}
// array of WP_Post objects received
for($l_int_Index = 0; $l_int_Index < count($p_mixed_Posts); $l_int_Index++) {
$p_mixed_Posts[$l_int_Index] = $this->replacePostObject($p_mixed_Posts[$l_int_Index]);
}
}
/**
* Replace all Footnotes in a WP_Post object.
*
* @author Stefan Herndler
* @since 1.5.6
* @param WP_Post $p_obj_Post
* @return WP_Post
*/
private function replacePostObject($p_obj_Post) {
//MCI_Footnotes_Convert::debug($p_obj_Post);
$p_obj_Post->post_content = $this->exec($p_obj_Post->post_content);
$p_obj_Post->post_content_filtered = $this->exec($p_obj_Post->post_content_filtered);
$p_obj_Post->post_excerpt = $this->exec($p_obj_Post->post_excerpt);
return $p_obj_Post;
}
/**
* Replaces all footnotes that occur in the given content.
*
* @author Stefan Herndler
* @since 1.5.0
* @param string $p_str_Content Any string that may contain footnotes to be replaced.
* @param bool $p_bool_OutputReferences Appends the Reference Container to the output if set to true, default true.
* @param bool $p_bool_HideFootnotesText Hide footnotes found in the string.
* @return string
*
* Edited:
* @since 2.2.0 insert reference container at shortcode, thanks to @hamshe 2020-12-13T2057+0100
* @link https://wordpress.org/support/topic/reference-container-in-elementor/
*
* @since 2.2.5 delete unused position shortcode, when position is widget or footer, thanks to @hamshe 2020-12-18T1434+0100
* @link https://wordpress.org/support/topic/reference-container-in-elementor/#post-13784126
*/
public function exec($p_str_Content, $p_bool_OutputReferences = false, $p_bool_HideFootnotesText = false) {
// replace all footnotes in the content, settings are converted to html characters
$p_str_Content = $this->search($p_str_Content, true, $p_bool_HideFootnotesText);
// replace all footnotes in the content, settings are NOT converted to html characters
$p_str_Content = $this->search($p_str_Content, false, $p_bool_HideFootnotesText);
// append the reference container or insert at shortcode:
$l_str_ReferenceContainerPositionShortcode = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_REFERENCE_CONTAINER_POSITION_SHORTCODE);
if ( empty( $l_str_ReferenceContainerPositionShortcode ) ) {
$l_str_ReferenceContainerPositionShortcode = '[[references]]';
}
if ( $p_bool_OutputReferences ) {
if ( strpos( $p_str_Content, $l_str_ReferenceContainerPositionShortcode ) !== false ) {
$p_str_Content = str_replace( $l_str_ReferenceContainerPositionShortcode, $this->ReferenceContainer(), $p_str_Content );
} else {
$p_str_Content .= $this->ReferenceContainer();
}
// increment the container ID:
self::$a_int_ReferenceContainerId++;
}
// delete position shortcode should any remain e.g. when ref container is in footer, thanks to @hamshe:
$p_str_Content = str_replace( $l_str_ReferenceContainerPositionShortcode, '', $p_str_Content );
// take a look if the LOVE ME slug should NOT be displayed on this page/post, remove the short code if found
if (strpos($p_str_Content, MCI_Footnotes_Config::C_STR_NO_LOVE_SLUG) !== false) {
self::$a_bool_AllowLoveMe = false;
$p_str_Content = str_replace(MCI_Footnotes_Config::C_STR_NO_LOVE_SLUG, "", $p_str_Content);
}
// return the content with replaced footnotes and optional reference container appended:
return $p_str_Content;
}
/**
* Replaces all footnotes in the given content and appends them to the static property.
*
* @author Stefan Herndler
* @since 1.5.0
* @param string $p_str_Content Content to be searched for footnotes.
* @param bool $p_bool_ConvertHtmlChars html encode settings, default true.
* @param bool $p_bool_HideFootnotesText Hide footnotes found in the string.
* @return string
*
* Edited since 2.0.0
*
* @since 2.4.0 footnote shortcode syntax validation
* @since 2.5.0 Shortcode syntax validation: exclude certain cases involving scripts, thanks to @andreasra 2021-01-07T0824+0100
* @since 2.5.0 Shortcode syntax validation: complete message with hint about setting, thanks to @andreasra
* @since 2.5.0 Shortcode syntax validation: limit length of quoted string to 300 characters, thanks to @andreasra
* @link https://wordpress.org/support/topic/warning-unbalanced-footnote-start-tag-short-code-before/
*/
public function search($p_str_Content, $p_bool_ConvertHtmlChars, $p_bool_HideFootnotesText) {
// post ID to make everything unique wrt infinite scroll and archive view
self::$a_int_PostId = get_the_id();
// contains the index for the next footnote on this page
$l_int_FootnoteIndex = count(self::$a_arr_Footnotes) + 1;
// contains the starting position for the lookup of a footnote
$l_int_PosStart = 0;
// get start and end tag for the footnotes short code
$l_str_StartingTag = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_SHORT_CODE_START);
$l_str_EndingTag = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_SHORT_CODE_END);
if ($l_str_StartingTag == "userdefined" || $l_str_EndingTag == "userdefined") {
$l_str_StartingTag = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_SHORT_CODE_START_USER_DEFINED);
$l_str_EndingTag = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_SHORT_CODE_END_USER_DEFINED);
}
// decode html special chars
if ($p_bool_ConvertHtmlChars) {
$l_str_StartingTag = htmlspecialchars($l_str_StartingTag);
$l_str_EndingTag = htmlspecialchars($l_str_EndingTag);
}
// if footnotes short code is empty, return the content without changes
if (empty($l_str_StartingTag) || empty($l_str_EndingTag)) {
return $p_str_Content;
}
// if footnotes short codes are unbalanced, and syntax validation is not disabled,
// return content with prepended warning:
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTE_SHORTCODE_SYNTAX_VALIDATION_ENABLE))) {
// convert the shortcodes to regex syntax conformant:
$l_str_StartTagRegex = preg_replace( '#([\(\)\{\}\[\]\*\.\?\!])#', '\\\\$1', $l_str_StartingTag );
$l_str_EndTagRegex = preg_replace( '#([\(\)\{\}\[\]\*\.\?\!])#', '\\\\$1', $l_str_EndingTag );
// apply different regex depending on whether start shortcode is double/triple opening parenthesis:
if ( $l_str_StartingTag == '((' || $l_str_StartingTag == '(((' ) {
// this prevents from catching a script containing e.g. a double opening parenthesis:
$l_str_ValidationRegex = '#' . $l_str_StartTagRegex . '(((?!' . $l_str_EndTagRegex . ')[^\{\}])*?)(' . $l_str_StartTagRegex . '|$)#s';
} else {
// catch all only if the start shortcode is not double/triple opening parenthesis, i.e. is unlikely to occur in scripts:
$l_str_ValidationRegex = '#' . $l_str_StartTagRegex . '(((?!' . $l_str_EndTagRegex . ').)*?)(' . $l_str_StartTagRegex . '|$)#s';
}
// check syntax and get error locations:
preg_match( $l_str_ValidationRegex, $p_str_Content, $p_arr_ErrorLocation );
if ( empty( $p_arr_ErrorLocation ) ) {
self::$a_bool_SyntaxErrorFlag = false;
}
// prevent generating and inserting the warning multiple times:
if ( self::$a_bool_SyntaxErrorFlag ) {
// get plain text string for error location:
$l_str_ErrorSpotString = strip_tags( $p_arr_ErrorLocation[1] );
// limit string length to 300 characters:
if ( strlen( $l_str_ErrorSpotString ) > 300 ) {
$l_str_ErrorSpotString = substr( $l_str_ErrorSpotString, 0, 299 ) . '…';
}
// compose warning box:
$l_str_SyntaxErrorWarning = '';
// prepend the warning box to the content:
$p_str_Content = $l_str_SyntaxErrorWarning . $p_str_Content;
// checked, set flag to false to prevent duplicate warning:
self::$a_bool_SyntaxErrorFlag = false;
return $p_str_Content;
}
}
// load referrer templates if footnotes text not hidden:
if (!$p_bool_HideFootnotesText) {
// load footnote referrer template file:
if (self::$a_bool_AlternativeTooltipsEnabled) {
$l_obj_Template = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "footnote-alternative");
} else {
$l_obj_Template = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "footnote");
}
// call again for robustness when priority levels don’t match any longer:
self::$a_bool_TooltipsEnabled = MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_MOUSE_OVER_BOX_ENABLED));
self::$a_bool_AlternativeTooltipsEnabled = MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_MOUSE_OVER_BOX_ALTERNATIVE));
// load tooltip inline script if jQuery tooltips are enabled:
if (self::$a_bool_TooltipsEnabled && ! self::$a_bool_AlternativeTooltipsEnabled) {
$l_obj_TemplateTooltip = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "tooltip");
}
} else {
$l_obj_Template = null;
$l_obj_TemplateTooltip = null;
}
// search footnotes short codes in the content
do {
// get first occurrence of the footnote start tag short code:
$i_int_LenContent = strlen($p_str_Content);
if ($l_int_PosStart > $i_int_LenContent) $l_int_PosStart = $i_int_LenContent;
$l_int_PosStart = strpos($p_str_Content, $l_str_StartingTag, $l_int_PosStart);
// no short code found, stop here
if ($l_int_PosStart === false) {
break;
}
// get first occurrence of the footnote end tag short code:
$l_int_PosEnd = strpos($p_str_Content, $l_str_EndingTag, $l_int_PosStart);
// no short code found, stop here
if ($l_int_PosEnd === false) {
break;
}
// calculate the length of the footnote
$l_int_Length = $l_int_PosEnd - $l_int_PosStart;
// get footnote text
$l_str_FootnoteText = substr($p_str_Content, $l_int_PosStart + strlen($l_str_StartingTag), $l_int_Length - strlen($l_str_StartingTag));
// get tooltip text if present:
self::$a_str_TooltipShortcode = '[[/tooltip]]'; // grab from DB
self::$a_int_TooltipShortcodeLength = strlen( self::$a_str_TooltipShortcode );
$l_int_TooltipTextLength = strpos( $l_str_FootnoteText, self::$a_str_TooltipShortcode );
$l_bool_HasTooltipText = $l_int_TooltipTextLength === false ? false : true;
if ( $l_bool_HasTooltipText ) {
$l_str_TooltipText = substr( $l_str_FootnoteText, 0, $l_int_TooltipTextLength );
} else {
$l_str_TooltipText = '';
}
/**
* URL line wrap
*
* Fix line wrapping of URLs (hyperlinked or not) based on pattern, not link element,
* to prevent them from hanging out of the tooltip in non-Unicode-compliant user agents.
* @see public.css
*
* spare however values of the href and the src arguments!
* @since 2.1.5 exclude image source too, thanks to @bjrnet21
* @link https://wordpress.org/support/topic/2-1-4-breaks-on-my-site-images-dont-show/
*
* Even ARIA labels may take a URL as value, so use \w=[\'"] as a catch-all 2020-12-10T1005+0100
* @since 2.1.6 add catch-all exclusion to fix URL line wrapping, thanks to @a223123131 2020-12-09T1921+0100
* @link https://wordpress.org/support/topic/broken-layout-starting-version-2-1-4/
*
* @since 2.1.6 option to disable URL line wrapping 2020-12-09T1606+0100
*
* URLs may be a query string in a URL:
* @since 2.2.6 make the quotation mark optional in the exclusion regex, thanks to @spiralofhope2 2020-12-23T0409+0100
* @link https://wordpress.org/support/topic/two-links-now-breaks-footnotes-with-blogtext/
*
* @since 2.2.7 revert that change in the exclusion regex, thanks to @rjl20, @spaceling, @friedrichnorth, @bernardzit 2020-12-23T1046+0100
* @link https://wordpress.org/support/topic/two-links-now-breaks-footnotes-with-blogtext/
*
* @link https://wordpress.org/support/topic/footnotes-dont-show-after-update-to-2-2-6/
* @since 2.2.8 correct lookbehind by duplicating it with and without quotation mark class 2020-12-23T1107+0100
*
* @since 2.2.9 account for RFC 2396 allowed characters in parameter names 2020-12-24T1956+0100
* @link https://stackoverflow.com/questions/814700/http-url-allowed-characters-in-parameter-names
*
* @since 2.2.9 exclude URLs also where the equals sign is preceded by an entity or character reference 2020-12-25T1234+0100
*
* @since 2.2.10 support also file transfer protocol URLs 2020-12-25T2220+0100
*
* URL pattern may be part of a Wayback Machine URL
* @thanksto @rumperuu bug report
* @link https://wordpress.org/support/topic/line-wrap-href-regex-bug/
* @since 2.5.3
* exclude protocols with prepended slash hinting it’s in a Wayback Machine URL
*/
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTE_URL_WRAP_ENABLED))) {
$l_str_FootnoteText = preg_replace( '#(?$1', $l_str_FootnoteText );
}
// Text to be displayed instead of the footnote
$l_str_FootnoteReplaceText = "";
// whether hard links are enabled; relevant also below in ReferenceContainer():
if (self::$a_bool_HardLinksEnable) {
// get the configurable parts:
self::$a_str_ReferrerLinkSlug = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_REFERRER_FRAGMENT_ID_SLUG);
self::$a_str_FootnoteLinkSlug = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTE_FRAGMENT_ID_SLUG);
self::$a_str_LinkIdsSeparator = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_HARD_LINK_IDS_SEPARATOR);
// streamline ID concatenation:
self::$a_str_PostContainerIdCompound = self::$a_str_LinkIdsSeparator;
self::$a_str_PostContainerIdCompound .= self::$a_int_PostId;
self::$a_str_PostContainerIdCompound .= self::$a_str_LinkIdsSeparator;
self::$a_str_PostContainerIdCompound .= self::$a_int_ReferenceContainerId;
self::$a_str_PostContainerIdCompound .= self::$a_str_LinkIdsSeparator;
}
// display the footnote referrers and the tooltips:
if (!$p_bool_HideFootnotesText) {
$l_int_Index = MCI_Footnotes_Convert::Index($l_int_FootnoteIndex, MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_COUNTER_STYLE));
// display only a truncated footnote text if option enabled:
$l_bool_EnableExcerpt = MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_MOUSE_OVER_BOX_EXCERPT_ENABLED));
$l_int_MaxLength = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_FOOTNOTES_MOUSE_OVER_BOX_EXCERPT_LENGTH));
// define excerpt text as footnote text by default:
$l_str_ExcerptText = $l_str_FootnoteText;
/**
* TOOLTIP TRUNCATION
*
* If the option is enabled, the tooltip text is truncated based on character count.
* This is equivalent to the WordPress default excerpt generation, i.e. without a
* custom excerpt and without a delimiter. But WordPress does word count, usually 55.
*
* Tooltips: Read-on button: Label: configurable instead of localizable
* @since 2.1.0
* @datestamp 2020-11-08T2146+0100
* @thanksto @rovanov
* @triggeredby https://wordpress.org/support/topic/offset-x-axis-and-offset-y-axis-does-not-working/
* (The feature was not requested but it fixes an apparent design flaw of the plugin
* appearing when looking at a longer tooltip on the web page linked from this topic.)
*/
if (self::$a_bool_TooltipsEnabled && $l_bool_EnableExcerpt) {
$l_str_DummyText = strip_tags($l_str_FootnoteText);
if (is_int($l_int_MaxLength) && strlen($l_str_DummyText) > $l_int_MaxLength) {
$l_str_ExcerptText = substr($l_str_DummyText, 0, $l_int_MaxLength);
$l_str_ExcerptText = substr($l_str_ExcerptText, 0, strrpos($l_str_ExcerptText, ' '));
$l_str_ExcerptText .= ' … <';
$l_str_ExcerptText .= self::$a_bool_HardLinksEnable ? 'a' : 'span';
$l_str_ExcerptText .= ' class="footnote_tooltip_continue" ';
$l_str_ExcerptText .= 'onclick="footnote_moveToAnchor_' . self::$a_int_PostId;
$l_str_ExcerptText .= '_' . self::$a_int_ReferenceContainerId;
$l_str_ExcerptText .= '(\'footnote_plugin_reference_' . self::$a_int_PostId;
$l_str_ExcerptText .= '_' . self::$a_int_ReferenceContainerId;
$l_str_ExcerptText .= "_$l_int_Index');\"";
// if enabled, add the hard link fragment ID:
if (self::$a_bool_HardLinksEnable) {
$l_str_ExcerptText .= ' href="#';
$l_str_ExcerptText .= self::$a_str_FootnoteLinkSlug;
$l_str_ExcerptText .= self::$a_str_PostContainerIdCompound;
$l_str_ExcerptText .= $l_int_Index;
$l_str_ExcerptText .= '"';
}
$l_str_ExcerptText .= '>';
$l_str_ExcerptText .= MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_TOOLTIP_READON_LABEL);
$l_str_ExcerptText .= self::$a_bool_HardLinksEnable ? '' : '';
}
}
/**
* REFERRERS ELEMENT SUPERSCRIPT OR BASELINE
*
* Referrers: new setting for vertical align: superscript (default) or baseline (optional), thanks to @cwbayer bug report
* @since 2.1.1
*
* @reporter @cwbayer
* @bugreport https://wordpress.org/support/topic/footnote-number-in-text-superscript-disrupts-leading/
*
* define the HTML element to use for the referrers:
*/
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_FOOTNOTES_REFERRER_SUPERSCRIPT_TAGS))) {
$l_str_SupSpan = 'sup';
} else {
$l_str_SupSpan = 'span';
}
// whether hard links are enabled; relevant also below in ReferenceContainer():
if (self::$a_bool_HardLinksEnable) {
self::$a_str_LinkSpan = 'a';
self::$a_str_LinkCloseTag = '';
// self::$a_str_LinkOpenTag will be defined as needed
// compose hyperlink address (leading space is in template):
$l_str_FootnoteLinkArgument = 'href="#';
$l_str_FootnoteLinkArgument .= self::$a_str_FootnoteLinkSlug;
$l_str_FootnoteLinkArgument .= self::$a_str_PostContainerIdCompound;
$l_str_FootnoteLinkArgument .= $l_int_Index;
$l_str_FootnoteLinkArgument .= '" class="footnote_hard_link"';
// compose offset anchor, an empty span child of empty span
// to prevent browsers from drawing tall dotted rectangles:
$l_str_ReferrerAnchorElement = '';
} else {
// no hyperlink nor offset anchor needed:
$l_str_FootnoteLinkArgument = '';
$l_str_ReferrerAnchorElement = '';
// whether the link element is used nevertheless for styling:
if ( MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_LINK_ELEMENT_ENABLED)) ) {
self::$a_str_LinkSpan = 'a';
self::$a_str_LinkOpenTag = '';
self::$a_str_LinkCloseTag = '';
}
}
// determine tooltip content:
if ( self::$a_bool_TooltipsEnabled ) {
$l_str_TooltipContent = $l_bool_HasTooltipText ? $l_str_TooltipText : $l_str_ExcerptText;
} else {
$l_str_TooltipContent = '';
}
// fill in 'templates/public/footnote.html':
$l_obj_Template->replace(
array(
"link-span" => self::$a_str_LinkSpan,
"post_id" => self::$a_int_PostId,
"container_id" => self::$a_int_ReferenceContainerId,
"note_id" => $l_int_Index,
"hard-link" => $l_str_FootnoteLinkArgument,
"sup-span" => $l_str_SupSpan,
"before" => MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_STYLING_BEFORE),
"index" => $l_int_Index,
"after" => MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_STYLING_AFTER),
"anchor-element" => $l_str_ReferrerAnchorElement,
"text" => $l_str_TooltipContent,
)
);
$l_str_FootnoteReplaceText = $l_obj_Template->getContent();
// reset the template
$l_obj_Template->reload();
// if standard tooltips are enabled but alternative are not:
if (self::$a_bool_TooltipsEnabled && ! self::$a_bool_AlternativeTooltipsEnabled) {
$l_int_OffsetY = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_FOOTNOTES_MOUSE_OVER_BOX_OFFSET_Y));
$l_int_OffsetX = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_FOOTNOTES_MOUSE_OVER_BOX_OFFSET_X));
$l_int_FadeInDelay = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_MOUSE_OVER_BOX_FADE_IN_DELAY ));
$l_int_FadeInDuration = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_MOUSE_OVER_BOX_FADE_IN_DURATION ));
$l_int_FadeOutDelay = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_MOUSE_OVER_BOX_FADE_OUT_DELAY ));
$l_int_FadeOutDuration = intval(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_INT_MOUSE_OVER_BOX_FADE_OUT_DURATION));
// fill in 'templates/public/tooltip.html':
$l_obj_TemplateTooltip->replace(
array(
"post_id" => self::$a_int_PostId,
"container_id" => self::$a_int_ReferenceContainerId,
"note_id" => $l_int_Index,
"position" => MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_MOUSE_OVER_BOX_POSITION),
"offset-y" => !empty($l_int_OffsetY) ? $l_int_OffsetY : 0,
"offset-x" => !empty($l_int_OffsetX) ? $l_int_OffsetX : 0,
"fade-in-delay" => !empty($l_int_FadeInDelay ) ? $l_int_FadeInDelay : 0,
"fade-in-duration" => !empty($l_int_FadeInDuration ) ? $l_int_FadeInDuration : 0,
"fade-out-delay" => !empty($l_int_FadeOutDelay ) ? $l_int_FadeOutDelay : 0,
"fade-out-duration" => !empty($l_int_FadeOutDuration) ? $l_int_FadeOutDuration : 0,
)
);
$l_str_FootnoteReplaceText .= $l_obj_TemplateTooltip->getContent();
$l_obj_TemplateTooltip->reload();
}
}
// replace the footnote with the template
$p_str_Content = substr_replace($p_str_Content, $l_str_FootnoteReplaceText, $l_int_PosStart, $l_int_Length + strlen($l_str_EndingTag));
// add footnote only if not empty
if (!empty($l_str_FootnoteText)) {
// set footnote to the output box at the end
self::$a_arr_Footnotes[] = $l_str_FootnoteText;
// increase footnote index
$l_int_FootnoteIndex++;
}
// add offset to the new starting position
$l_int_PosStart += $l_int_Length + strlen($l_str_EndingTag);
$l_int_PosStart = $l_int_Length + strlen($l_str_FootnoteReplaceText);
} while (true);
// return content
return $p_str_Content;
}
/**
* Generates the reference container.
*
* @author Stefan Herndler
* @since 1.5.0
* @return string
*
* @edit 2.0.6 fix line breaking behavior in footnote number clusters
* @edit 2.1.1 fix fragment IDs and backlinks with combine identical turned on 2020-11-14T1808+0100
*/
public function ReferenceContainer() {
// no footnotes have been replaced on this page:
if (empty(self::$a_arr_Footnotes)) {
return "";
}
/**
* FOOTNOTE INDEX BACKLINK SYMBOL
*
* @since 2.0.0 removed backlink symbol along with column 2 of the reference container
* @since 2.0.3 prepended an arrow on user request
* @since 2.0.4 restored the arrow select & symbol input setting
* @since 2.1.1 made the symbol optional instead of configuring it to invisible
*/
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_REFERENCE_CONTAINER_BACKLINK_SYMBOL_ENABLE))) {
// get html arrow
$l_str_Arrow = MCI_Footnotes_Convert::getArrow(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_HYPERLINK_ARROW));
// set html arrow to the first one if invalid index defined
if (is_array($l_str_Arrow)) {
$l_str_Arrow = MCI_Footnotes_Convert::getArrow(0);
}
// get user defined arrow
$l_str_ArrowUserDefined = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_HYPERLINK_ARROW_USER_DEFINED);
if (!empty($l_str_ArrowUserDefined)) {
$l_str_Arrow = $l_str_ArrowUserDefined;
}
// wrap the arrow in a @media print { display:hidden } span:
$l_str_FootnoteArrow = '';
} else {
// if it is not, set arrow to empty:
$l_str_Arrow = '';
$l_str_FootnoteArrow = '';
}
/**
* BACKLINK SEPARATOR
*
* Initially a comma was appended in this algorithm for enumerations.
* The comma in enumerations is not generally preferred.
* @since 2.1.4 the separator is optional, has options, and is configurable:
*/
// check if it is even enabled:
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_BACKLINKS_SEPARATOR_ENABLED))) {
// if so, check if it is freely configured:
$l_str_Separator = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_BACKLINKS_SEPARATOR_CUSTOM);
if (empty($l_str_Separator)) {
// if it is not, check which option is on:
$l_str_SeparatorOption = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_BACKLINKS_SEPARATOR_OPTION);
switch ($l_str_SeparatorOption) {
case 'comma' : $l_str_Separator = ','; break;
case 'semicolon': $l_str_Separator = ';'; break;
case 'en_dash' : $l_str_Separator = ' –'; break;
}
}
} else {
$l_str_Separator = '';
}
/**
* BACKLINK TERMINATOR
*
* Initially a dot was appended in the table row template.
* @since 2.0.6 a dot after footnote numbers is discarded as not localizable;
* making it optional was envisaged.
* @since 2.1.4 the terminator is optional, has options, and is configurable:
*/
// check if it is even enabled:
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_BACKLINKS_TERMINATOR_ENABLED))) {
// if so, check if it is input-configured:
$l_str_Terminator = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_BACKLINKS_TERMINATOR_CUSTOM);
if (empty($l_str_Terminator)) {
// if it is not, check which option is on:
$l_str_TerminatorOption = MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_BACKLINKS_TERMINATOR_OPTION);
switch ($l_str_TerminatorOption) {
case 'period' : $l_str_Terminator = '.'; break;
case 'parenthesis': $l_str_Terminator = ')'; break;
case 'colon' : $l_str_Terminator = ':'; break;
}
}
} else {
$l_str_Terminator = '';
}
/**
* LINE BREAKS
*
* The backlinks of combined footnotes are generally preferred in an enumeration.
* But when few footnotes are identical, stacking the items in list form is better.
* Variable number length and proportional character width require explicit line breaks.
* Otherwise, an ordinary space character offering a line break opportunity is inserted.
*/
$l_str_LineBreak = MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_BACKLINKS_LINE_BREAKS_ENABLED)) ? '
' : ' ';
/**
* For maintenance and support, table rows in the reference container should be
* separated by an empty line. So we add these line breaks for source readability.
* Before the first table row (breaks between rows are ~200 lines below):
*/
$l_str_Body = "\r\n\r\n";
/**
* REFERENCE CONTAINER TABLE ROW TEMPLATE LOAD
*
* Reference container: option to restore 3-column layout (combining identicals turned off)
* @since 2.1.1
* @datestamp 2020-11-16T2024+0100
*/
// when combining identical footnotes is turned on, another template is needed:
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_COMBINE_IDENTICAL_FOOTNOTES))) {
// the combining template allows for backlink clusters and supports cell clicking for single notes:
$l_obj_Template = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "reference-container-body-combi");
} else {
// when 3-column layout is turned on (only available if combining is turned off):
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_REFERENCE_CONTAINER_3COLUMN_LAYOUT_ENABLE))) {
$l_obj_Template = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "reference-container-body-3column");
} else {
// when switch symbol and index is turned on, and combining and 3-columns are off:
if (MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_REFERENCE_CONTAINER_BACKLINK_SYMBOL_SWITCH))) {
$l_obj_Template = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "reference-container-body-switch");
} else {
// default is the standard template:
$l_obj_Template = new MCI_Footnotes_Template(MCI_Footnotes_Template::C_STR_PUBLIC, "reference-container-body");
}
}
}
/**
* SWITCH BACKLINK SYMBOL AND FOOTNOTE NUMBER
*
* Reference container: option to append symbol (prepended by default) (combining identicals turned off)
* @since 2.1.1
* @datestamp 2020-11-16T2024+0100
*/
$l_bool_SymbolSwitch = MCI_Footnotes_Convert::toBool(MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_BOOL_REFERENCE_CONTAINER_BACKLINK_SYMBOL_SWITCH));
// FILL IN THE TEMPLATE
// loop through all footnotes found in the page
for ($l_int_Index = 0; $l_int_Index < count(self::$a_arr_Footnotes); $l_int_Index++) {
// TEXT COLUMN
// get footnote text
$l_str_FootnoteText = self::$a_arr_Footnotes[$l_int_Index];
// if footnote is empty, go to the next one;
// With combine identicals turned on, identicals will be deleted and are skipped:
if (empty($l_str_FootnoteText)) {
continue;
}
// generate content of footnote index cell
$l_int_FirstFootnoteIndex = ($l_int_Index + 1);
// get the footnote index string and
// keep supporting legacy index placeholder:
$l_str_FootnoteId = MCI_Footnotes_Convert::Index(($l_int_Index + 1), MCI_Footnotes_Settings::instance()->get(MCI_Footnotes_Settings::C_STR_FOOTNOTES_COUNTER_STYLE));
// INDEX COLUMN WITH ONE BACKLINK PER TABLE ROW
// if enabled, and for the case the footnote is single, compose hard link:
// define variable as empty for the reference container if not enabled:
$l_str_HardLinkAddress = '';
if (self::$a_bool_HardLinksEnable) {
// compose fragment ID anchor with offset, for use in reference container, an
// empty span child of empty span to avoid tall dotted rectangles in browser:
$l_str_FootnoteAnchorElement = '';
// compose optional hard link address:
$l_str_HardLinkAddress = ' href="#';
$l_str_HardLinkAddress .= self::$a_str_ReferrerLinkSlug;
$l_str_HardLinkAddress .= self::$a_str_PostContainerIdCompound;
$l_str_HardLinkAddress .= $l_str_FootnoteId . '"';
// compose optional opening link tag with optional hard link, mandatory for instance:
self::$a_str_LinkOpenTag = '