c908a92b38
git-svn-id: https://plugins.svn.wordpress.org/footnotes/trunk@921830 b8457f37-d9ea-0310-8a92-e5e31aec5664
389 lines
15 KiB
PHP
389 lines
15 KiB
PHP
<?php
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/**
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* Created by Stefan Herndler.
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* User: Stefan
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* Date: 15.05.14
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* Time: 16:21
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* Version: 1.1.1
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* Since: 1.0
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*/
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/*
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* collection of all footnotes found on the current page
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* @since 1.0
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*/
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$g_arr_Footnotes = array();
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/*
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* collection of all footnotes settings
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* @since 1.0-beta
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*/
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$g_arr_FootnotesSettings = array();
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/*
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* flag to know íf the user wants to have NO 'love me' slug on the current page
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* @since 1.1.1
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*/
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$g_bool_NoLoveMeSlugOnCurrentPage = false;
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/**
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* register all functions needed for the replacement in the wordpress core
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* @since 1.0-gamma
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*/
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function footnotes_RegisterReplacementFunctions()
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{
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/* access to the global settings collection */
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global $g_arr_FootnotesSettings;
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/* load footnote settings */
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$g_arr_FootnotesSettings = footnotes_filter_options(FOOTNOTE_SETTINGS_CONTAINER, Class_FootnotesSettings::$a_arr_Default_Settings, false);
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/* stops listening to the output and replaces the footnotes */
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add_action('get_footer', 'footnotes_StopReplacing');
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/* moves these contents through the replacement function */
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add_filter('the_content', 'footnotes_Replacer_Content');
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add_filter('the_excerpt', 'footnotes_Replacer_Excerpt');
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add_filter('widget_title', 'footnotes_Replacer_WidgetTitle');
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add_filter('widget_text', 'footnotes_Replacer_WidgetText');
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/* adds the love and share me slug to the footer */
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add_action('wp_footer', 'footnotes_LoveAndShareMe');
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}
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/**
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* replacement action for the_excerpt
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* @param string $p_str_Content
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* @return string
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* @since 1.0.7
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*/
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function footnotes_Replacer_Content($p_str_Content)
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{
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/* access to the global settings collection */
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global $g_arr_FootnotesSettings;
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/* get setting for 'display reference container position' */
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$l_str_ReferenceContainerPosition = $g_arr_FootnotesSettings[FOOTNOTE_INPUTFIELD_REFERENCE_CONTAINER_PLACE];
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/* returns content */
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return footnotes_replaceFootnotes($p_str_Content, $l_str_ReferenceContainerPosition == "post_end" ? true : false);
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}
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/**
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* replacement action for the_excerpt
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* @param string $p_str_Content
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* @return string
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* @since 1.0.7
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*/
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function footnotes_Replacer_Excerpt($p_str_Content)
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{
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/* access to the global settings collection */
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global $g_arr_FootnotesSettings;
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/* get setting for accepting footnotes in the excerpt and convert it to boolean */
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$l_bool_SearchExcerpt = footnotes_ConvertToBool($g_arr_FootnotesSettings[FOOTNOTE_INPUTFIELD_SEARCH_IN_EXCERPT]);
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/* search in the excerpt only if activated */
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if ($l_bool_SearchExcerpt) {
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return footnotes_replaceFootnotes($p_str_Content, false);
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}
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/* returns content */
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return $p_str_Content;
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}
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/**
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* replacement action for widget_title
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* @param string $p_str_Content
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* @return string
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* @since 1.0.7
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*/
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function footnotes_Replacer_WidgetTitle($p_str_Content)
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{
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/* returns content */
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return $p_str_Content;
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}
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/**
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* replacement action for widget_text
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* @param string $p_str_Content
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* @return string
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* @since 1.0.7
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*/
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function footnotes_Replacer_WidgetText($p_str_Content)
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{
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/* access to the global settings collection */
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global $g_arr_FootnotesSettings;
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/* get setting for 'display reference container position' */
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$l_str_ReferenceContainerPosition = $g_arr_FootnotesSettings[FOOTNOTE_INPUTFIELD_REFERENCE_CONTAINER_PLACE];
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/* returns content */
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return footnotes_replaceFootnotes($p_str_Content, $l_str_ReferenceContainerPosition == "post_end" ? true : false);
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}
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/**
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* stops buffering the output, automatically calls the ob_start() defined callback function
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* replaces all footnotes in the whole buffer and outputs it
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* @since 1.0
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* cleared the flag in version 1.0.7
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*/
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function footnotes_StopReplacing()
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{
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/* access to the global settings collection */
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global $g_arr_FootnotesSettings;
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/* get setting for 'display reference container position' */
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$l_str_ReferenceContainerPosition = $g_arr_FootnotesSettings[FOOTNOTE_INPUTFIELD_REFERENCE_CONTAINER_PLACE];
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if ($l_str_ReferenceContainerPosition == "footer") {
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echo footnotes_OutputReferenceContainer();
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}
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}
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/**
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* outputs a link to love and share this awesome plugin
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* @since 1.0-gamma
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*/
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function footnotes_LoveAndShareMe()
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{
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/* access to the global settings collection */
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global $g_arr_FootnotesSettings;
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global $g_bool_NoLoveMeSlugOnCurrentPage;
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/*
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* updated url to wordpress.org plugin page instead of the github page
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* also updated the font-style and translation the string "footnotes"
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* in version 1.0.6
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*/
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/*
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* changed replacement of public plugin name to use global styling setting
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* @since 1.0.7
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*/
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/* get setting for love and share this plugin and convert it to boolean */
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$l_str_LoveMeText = $g_arr_FootnotesSettings[FOOTNOTE_INPUTFIELD_LOVE];
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/* check if the admin allows to add a link to the footer */
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if (!empty($l_str_LoveMeText) && strtolower($l_str_LoveMeText) != "no" && !$g_bool_NoLoveMeSlugOnCurrentPage) {
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if (strtolower($l_str_LoveMeText) == "random") {
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$l_str_LoveMeText = "text-" . rand(1,3);
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}
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switch ($l_str_LoveMeText) {
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case "text-1":
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$l_str_LoveMeText = sprintf(__('I %s %s', FOOTNOTES_PLUGIN_NAME), FOOTNOTES_LOVE_SYMBOL, FOOTNOTES_PLUGIN_PUBLIC_NAME_LINKED);
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break;
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case "text-2":
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$l_str_LoveMeText = sprintf(__('this site uses the awesome %s Plugin', FOOTNOTES_PLUGIN_NAME), FOOTNOTES_PLUGIN_PUBLIC_NAME_LINKED);
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break;
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case "text-3":
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default:
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$l_str_LoveMeText = sprintf(__('extra smooth %s', FOOTNOTES_PLUGIN_NAME), FOOTNOTES_PLUGIN_PUBLIC_NAME_LINKED);
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break;
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}
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echo '<div style="text-align:center; color:#acacac;">' . $l_str_LoveMeText . '</div>';
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}
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}
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/**
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* replaces all footnotes in the given content
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* loading settings if not happened yet since 1.0-gamma
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* @since 1.0
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* @param string $p_str_Content
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* @param bool $p_bool_OutputReferences [default: true]
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* @param bool $p_bool_ReplaceHtmlChars [ default: false]
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* @return string
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*/
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function footnotes_replaceFootnotes($p_str_Content, $p_bool_OutputReferences = true, $p_bool_ReplaceHtmlChars = false)
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{
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/* access to the global settings collection */
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global $g_arr_FootnotesSettings;
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/* load footnote settings */
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$g_arr_FootnotesSettings = footnotes_filter_options(FOOTNOTE_SETTINGS_CONTAINER, Class_FootnotesSettings::$a_arr_Default_Settings, $p_bool_ReplaceHtmlChars);
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/* replace all footnotes in the content */
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$p_str_Content = footnotes_getFromString($p_str_Content);
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/* add the reference list if set */
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if ($p_bool_OutputReferences) {
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$p_str_Content = $p_str_Content . footnotes_OutputReferenceContainer();
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}
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/*
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* checks if the user doesn't want to have a 'love me' on current page
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* @since 1.1.1
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*/
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if (strpos($p_str_Content, FOOTNOTES_NO_SLUGME_PLUG) !== false) {
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global $g_bool_NoLoveMeSlugOnCurrentPage;
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$g_bool_NoLoveMeSlugOnCurrentPage = true;
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$p_str_Content = str_replace(FOOTNOTES_NO_SLUGME_PLUG, "", $p_str_Content);
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}
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/* return the replaced content */
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return $p_str_Content;
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}
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/**
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* replace all footnotes in the given string and adds them to an array
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* using a personal starting and ending tag for the footnotes since 1.0-gamma
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* @since 1.0
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* @param string $p_str_Content
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* @return string
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*/
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function footnotes_getFromString($p_str_Content)
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{
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/* get access to the global array to store footnotes */
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global $g_arr_Footnotes;
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/* access to the global settings collection */
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global $g_arr_FootnotesSettings;
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/* contains the index for the next footnote on this page */
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$l_int_FootnoteIndex = count($g_arr_Footnotes) + 1;
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/* contains the starting position for the lookup of a footnote */
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$l_int_PosStart = 0;
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/* contains the footnote template */
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$l_str_FootnoteTemplate = file_get_contents(FOOTNOTES_TEMPLATES_DIR . "footnote.html");
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/* get footnote starting tag */
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$l_str_StartingTag = $g_arr_FootnotesSettings[FOOTNOTE_INPUTFIELD_PLACEHOLDER_START];
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/*get footnote ending tag */
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$l_str_EndingTag = $g_arr_FootnotesSettings[FOOTNOTE_INPUTFIELD_PLACEHOLDER_END];
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/*get footnote counter style */
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$l_str_CounterStyle = $g_arr_FootnotesSettings[FOOTNOTE_INPUTFIELD_COUNTER_STYLE];
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if ($l_str_StartingTag == "userdefined" || $l_str_EndingTag == "userdefined") {
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/* get user defined footnote starting tag */
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$l_str_StartingTag = $g_arr_FootnotesSettings[FOOTNOTE_INPUTFIELD_PLACEHOLDER_START_USERDEFINED];
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/*get user defined footnote ending tag */
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$l_str_EndingTag = $g_arr_FootnotesSettings[FOOTNOTE_INPUTFIELD_PLACEHOLDER_END_USERDEFINED];
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}
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/* decode html special chars */
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$p_str_Content = htmlspecialchars_decode($p_str_Content);
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/* check for a footnote placeholder in the current page */
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do {
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/* get first occurence of a footnote starting tag */
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$l_int_PosStart = strpos($p_str_Content, $l_str_StartingTag, $l_int_PosStart);
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/* tag found */
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if ($l_int_PosStart !== false) {
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/* get first occurence of a footnote ending tag after the starting tag */
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$l_int_PosEnd = strpos($p_str_Content, $l_str_EndingTag, $l_int_PosStart);
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/* tag found */
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if ($l_int_PosEnd !== false) {
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/* get length of footnote text */
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$l_int_Length = $l_int_PosEnd - $l_int_PosStart;
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/* get text inside footnote */
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$l_str_FootnoteText = substr($p_str_Content, $l_int_PosStart + strlen($l_str_StartingTag), $l_int_Length - strlen($l_str_StartingTag));
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/* set replacer for the footnote */
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$l_str_ReplaceText = str_replace("[[FOOTNOTE INDEX]]", footnote_convert_index($l_int_FootnoteIndex, $l_str_CounterStyle), $l_str_FootnoteTemplate);
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$l_str_ReplaceText = str_replace("[[FOOTNOTE TEXT]]", $l_str_FootnoteText, $l_str_ReplaceText);
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$l_str_ReplaceText = preg_replace('@[\s]{2,}@',' ',$l_str_ReplaceText);
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/* replace footnote in content */
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$p_str_Content = substr_replace($p_str_Content, $l_str_ReplaceText, $l_int_PosStart, $l_int_Length + strlen($l_str_EndingTag));
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/* set footnote to the output box at the end */
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$g_arr_Footnotes[] = $l_str_FootnoteText;
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/* increase footnote index */
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$l_int_FootnoteIndex++;
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/* add offset to the new starting position */
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$l_int_PosStart += ($l_int_PosEnd - $l_int_PosStart);
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/* no ending tag found */
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} else {
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$l_int_PosStart++;
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}
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/* no starting tag found */
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} else {
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break;
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}
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} while (true);
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/* return content */
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return $p_str_Content;
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}
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/**
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* looks through all footnotes that has been replaced in the current content and
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* adds a reference to the footnote at the end of the content
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* function to collapse the reference container since 1.0-beta
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* @since 1.0
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* @return string
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*/
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function footnotes_OutputReferenceContainer()
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{
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/* get access to the global array to read footnotes */
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global $g_arr_Footnotes;
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/* access to the global settings collection */
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global $g_arr_FootnotesSettings;
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/* no footnotes has been replaced on this page */
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if (empty($g_arr_Footnotes)) {
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/* return empty string */
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return "";
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}
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/* get setting for combine identical footnotes and convert it to boolean */
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$l_bool_CombineIdentical = footnotes_ConvertToBool($g_arr_FootnotesSettings[FOOTNOTE_INPUTFIELD_COMBINE_IDENTICAL]);
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/* get setting for preferences label */
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$l_str_ReferencesLabel = $g_arr_FootnotesSettings[FOOTNOTE_INPUTFIELD_REFERENCES_LABEL];
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/* get setting for collapse reference footnotes and convert it to boolean */
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$l_bool_CollapseReference = footnotes_ConvertToBool($g_arr_FootnotesSettings[FOOTNOTE_INPUTFIELD_COLLAPSE_REFERENCES]);
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/*get footnote counter style */
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$l_str_CounterStyle = $g_arr_FootnotesSettings[FOOTNOTE_INPUTFIELD_COUNTER_STYLE];
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/* output string, prepare it with the reference label as headline */
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$l_str_Output = '<div class="footnote_container_prepare"><p><span onclick="footnote_expand_reference_container(\"\");">' . $l_str_ReferencesLabel . '</span></p></div>';
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/* add a box around the footnotes */
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$l_str_Output .= '<div id="' . FOOTNOTE_REFERENCES_CONTAINER_ID . '"';
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/* add class to hide the references by default, if the user wants it */
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if ($l_bool_CollapseReference) {
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$l_str_Output .= ' class="footnote_hide_box"';
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}
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$l_str_Output .= '>';
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/* contains the footnote template */
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$l_str_FootnoteTemplate = file_get_contents(FOOTNOTES_TEMPLATES_DIR . "container.html");
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/* loop through all footnotes found in the page */
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for ($l_str_Index = 0; $l_str_Index < count($g_arr_Footnotes); $l_str_Index++) {
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/* get footnote text */
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$l_str_FootnoteText = $g_arr_Footnotes[$l_str_Index];
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/* if fottnote is empty, get to the next one */
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if (empty($l_str_FootnoteText)) {
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continue;
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}
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/* get footnote index */
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$l_str_FirstFootnoteIndex = ($l_str_Index + 1);
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$l_str_FootnoteIndex = footnote_convert_index(($l_str_Index + 1), $l_str_CounterStyle);
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/* check if it isn't the last footnote in the array */
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if ($l_str_FirstFootnoteIndex < count($g_arr_Footnotes) && $l_bool_CombineIdentical) {
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/* get all footnotes that I haven't passed yet */
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for ($l_str_CheckIndex = $l_str_FirstFootnoteIndex; $l_str_CheckIndex < count($g_arr_Footnotes); $l_str_CheckIndex++) {
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/* check if a further footnote is the same as the actual one */
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if ($l_str_FootnoteText == $g_arr_Footnotes[$l_str_CheckIndex]) {
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/* set the further footnote as empty so it won't be displayed later */
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$g_arr_Footnotes[$l_str_CheckIndex] = "";
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/* add the footnote index to the actual index */
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$l_str_FootnoteIndex .= ", " . footnote_convert_index(($l_str_CheckIndex + 1), $l_str_CounterStyle);
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}
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}
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}
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/* add the footnote to the output box */
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/*
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* added function to convert the counter style in the reference container (bugfix for the link to the footnote) in version 1.0.6
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*/
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$l_str_ReplaceText = str_replace("[[FOOTNOTE INDEX SHORT]]", footnote_convert_index($l_str_FirstFootnoteIndex, $l_str_CounterStyle), $l_str_FootnoteTemplate);
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$l_str_ReplaceText = str_replace("[[FOOTNOTE INDEX]]", $l_str_FootnoteIndex, $l_str_ReplaceText);
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$l_str_ReplaceText = str_replace("[[FOOTNOTE TEXT]]", $l_str_FootnoteText, $l_str_ReplaceText);
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$l_str_ReplaceText = preg_replace('@[\s]{2,}@',' ',$l_str_ReplaceText);
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/* add the footnote container to the output */
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$l_str_Output = $l_str_Output . $l_str_ReplaceText;
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}
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/* add closing tag for the div of the references container */
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$l_str_Output = $l_str_Output . '</div>';
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/* add a javascript to expand the reference container when clicking on a footnote or the reference label */
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$l_str_Output .= '
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<script type="text/javascript">
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function footnote_expand_reference_container(p_str_ID) {
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jQuery("#' . FOOTNOTE_REFERENCES_CONTAINER_ID . '").show();
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if (p_str_ID.length > 0) {
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jQuery(p_str_ID).focus();
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}
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}
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</script>
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';
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/* free all found footnotes if reference container will be displayed */
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$g_arr_Footnotes = array();
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/* return the output string */
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return $l_str_Output;
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} |