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_prism_full.plugin.php
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_prism_full.plugin.php
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<?php
/**
* Modified version of the Prism plugin for b2evolution
* Changes:
*
* 1. No restriction on lanuguage you specify although edit screen still
* has original buttons.
* 2. Add debug switch for non-minified versions for developers.
*
* https://github.com/davidnewcomb/prism_full_plugin
*
* ---
* This file implements the Prism plugin for b2evolution
*
* b2evolution - {@link http://b2evolution.net/}
* Released under GNU GPL License - {@link http://b2evolution.net/about/gnu-gpl-license}
* @copyright (c)2003-2018 by Francois Planque - {@link http://fplanque.com/}
*
* @package plugins
*/
if( !defined('EVO_MAIN_INIT') ) die( 'Please, do not access this page directly.' );
/**
* @package plugins
*/
class prism_full_plugin extends Plugin
{
var $code = 'evo_prism';
var $name = 'Prism (full)';
var $priority = 27;
var $group = 'rendering';
var $short_desc;
var $long_desc;
var $version = '6.9.7';
var $number_of_installs = 1;
// TODO make collection setting
var $my_debug = true;
/**
* Init
*/
function PluginInit( & $params )
{
$this->short_desc = T_( 'Display full computer code' ).' '.T_( '(Plugin not available in WYSIWYG mode)' );
$this->long_desc = T_( 'Display dull computer code rendered by JavaScript plugin Prism.' ).' '.T_( '(Plugin not available in WYSIWYG mode)' );
}
/**
* Filters out the custom tag that would not validate, PLUS escapes the actual code.
*
* @param mixed $params
*/
function FilterItemContents( & $params )
{
$content = & $params['content'];
$content = $this->filter_code( $content );
return true;
}
/**
* Formats post contents ready for editing
*
* @param mixed $params
*/
function UnfilterItemContents( & $params )
{
$content = & $params['content'];
$content = $this->unfilter_code( $content );
return true;
}
/**
* Event handler: Called before at the beginning, if a comment form gets sent (and received).
*/
function CommentFormSent( & $params )
{
$ItemCache = & get_ItemCache();
$comment_Item = & $ItemCache->get_by_ID( $params['comment_item_ID'], false );
if( !$comment_Item )
{ // Incorrect item
return false;
}
$item_Blog = & $comment_Item->get_Blog();
$apply_rendering = $this->get_coll_setting( 'coll_apply_comment_rendering', $item_Blog );
if( $this->is_renderer_enabled( $apply_rendering, $params['renderers'] ) )
{ // render code blocks in comment
$params['content' ] = & $params['comment'];
$this->FilterItemContents( $params );
}
}
/**
* Event handler: Called before at the beginning, if a message of thread form gets sent (and received).
*/
function MessageThreadFormSent( & $params )
{
$apply_rendering = $this->get_msg_setting( 'msg_apply_rendering' );
if( $this->is_renderer_enabled( $apply_rendering, $params['renderers'] ) )
{ // render code blocks in message
$this->FilterItemContents( $params );
}
}
/**
* Event handler: Called before at the beginning, if an email form gets sent (and received).
*/
function EmailFormSent( & $params )
{
$apply_rendering = $this->get_email_setting( 'email_apply_rendering' );
if( $this->is_renderer_enabled( $apply_rendering, $params['renderers'] ) )
{ // render code blocks in message:
$this->FilterItemContents( $params );
}
}
/**
* Perform rendering
*
* @see Plugin::RenderItemAsHtml()
*/
function RenderItemAsHtml( & $params )
{
/* Required a declaration of this method to identify this plugin as renderer */
}
/**
* Encode HTML entities inside <code> blocks
*
* @param array Block
* @return string
*/
function encode_html_entities( $block )
{
return $block[1].htmlspecialchars( $block[2] ).$block[3];
}
/**
* Convert code blocks to html tags
*
* @param string Content
* @return string Content
*/
function filter_code( $content )
{
// change all [codeblock] segments before format_to_post() gets a hold of them
// 1 - codeblock or codespan
// 2 - attribs : lang &| line
// 3 - code content
$content = preg_replace_callback( '#\[(codeblock|codespan)([^\]]*?)\]([\s\S]+?)?\[/\1\]#i',
array( $this, 'filter_code_callback' ), $content );
return $content;
}
/**
* Formats code ready for rendering
*
* @param array $block ( 1 - type, 2 - attributes, 3 - content )
* @return string formatted code || empty
*/
function filter_code_callback( $block )
{
$content = isset( $block[3] ) ? trim( $block[3] ) : '';
if( empty( $content ) )
{ // Don't render if no code content
return '';
}
// Type of code: 'codeblock' OR 'codespan'
$type = $block[1];
// Language:
$lang = strtolower( preg_replace( '/.*lang="?([a-z]+)"?.*/i', '$1', html_entity_decode( $block[2] ) ) );
// if( ! in_array( $lang, array( 'java', 'php', 'css', 'javascript', 'sql', 'markup', 'apacheconf' ) ) )
// { // Use Markup for unknown language
// $lang = '';
// }
$code_class = '';
if( $type == 'codespan' )
{ // Use standard class for codespan:
$code_class .= 'codespan';
}
if( ! empty( $lang ) )
{ // Use language class only for known language:
$code_class .= ' language-'.$lang;
}
$content = $block[3];
if( $type == 'codeblock' )
{ // Remove first empty line from codeblock content:
$content = preg_replace( '/^\r?\n/', '', $content );
}
$r = '<code'.( empty( $code_class ) ? '' : ' class="'.trim( $code_class ).'"' ).'>'.$content.'</code>';
if( $type == 'codeblock' )
{ // Set special template and attributes only for codeblock
// Detect number of start line:
$line = intval( preg_replace( '/.*line="?(-?[0-9]+)"?.*/i', '$1', html_entity_decode( $block[2] ) ) );
// If no line specified then don't add line numbers
if ($line == 0) {
$r = '<pre>'. $r .'</pre>';
} else {
$line = $line != 1 ? ' data-start="'.$line.'"' : '';
// Put <pre> around <code> to render codeblock
$r = '<pre class="line-numbers"'.$line.'>'.$r.'</pre>';
}
}
return $r;
}
/**
* Convert code html tags to code blocks to edit format
*
* @param string Content
* @return string Content
*/
function unfilter_code( $content )
{
$content = preg_replace_callback( '#(<pre class="line-numbers"( data-start="(-?[0-9]+)")?>)?<code( class="([^"]+)")?>([\s\S]+?)?</code>(</pre>)?#i',
array( $this, 'unfilter_code_callback' ), $content );
return $content;
}
/**
* Formats code ready for editing
*
* @param array $block ( 1 - start of <pre> tag, 4 - language, 5 - content )
* @return string formatted code || empty
*/
function unfilter_code_callback( $block )
{
$content = $block[6];
if( empty( $block[1] ) )
{ // [codespan]
$code_tag = 'codespan';
// codespan doesn't provide line numbers
$line = '';
}
else
{ // [codeblock]
$code_tag = 'codeblock';
// Detect number of start line:
preg_match( '/.*data-start="(-?[0-9]+)".*/i', html_entity_decode( $block[1] ), $line );
$line = ' line="'.( isset( $line[1] ) ? intval( $line[1] ) : '1' ).'"';
// Revert back first empty line:
$content = "\r\n".$content;
}
$lang = trim( strtolower( $block[5] ) );
if( ! empty( $lang ) )
{ // Add lang attribute only if it is defined:
preg_match( '/language-([a-z]+)/', $lang, $lang_match );
$lang = empty( $lang_match[1] ) ? '' : trim( $lang_match[1] );
// if( empty( $lang ) || ! in_array( $lang_match[1], array( 'php', 'java', 'css', 'javascript', 'sql', 'markup', 'apacheconf' ) ) )
// { // Don't allow unknown language:
// $lang = '';
// }
// else
// { // It is allowed language
$lang = ' lang="'.strtolower( $lang ).'"';
// }
}
// Build codeblock:
$r = '['.$code_tag.$lang.$line.']';
$r .= $content;
$r .= '[/'.$code_tag.']';
return $r;
}
/**
* Event handler: Called at the beginning of the skin's HTML HEAD section.
*
* Use this to add any HTML HEAD lines (like CSS styles or links to resource files (CSS, JavaScript, ..)).
*
* @param array Associative array of parameters
*/
function SkinBeginHtmlHead( & $params )
{
global $Collection, $Blog;
if( ! isset( $Blog ) || (
$this->get_coll_setting( 'coll_apply_rendering', $Blog ) == 'never' &&
$this->get_coll_setting( 'coll_apply_comment_rendering', $Blog ) == 'never' ) )
{ // Don't load css/js files when plugin is not enabled
return;
}
$this->add_requires();
}
/**
* Event handler: Called when ending the admin html head section.
*
* @param array Associative array of parameters
* @return boolean did we do something?
*/
function AdminEndHtmlHead( & $params )
{
global $ctrl;
if( $ctrl == 'campaigns' && get_param( 'tab' ) == 'send' && $this->get_email_setting( 'email_apply_rendering' ) )
{ // Load this only on form to preview email campaign:
$this->add_requires();
}
}
/**
* Event handler: Called when displaying editor toolbars on comment form.
*
* @param array Associative array of parameters
* @return boolean did we display a toolbar?
*/
function DisplayCommentToolbar( & $params )
{
if( !empty( $params['Comment'] ) )
{ // Comment is set, get Blog from comment
$Comment = & $params['Comment'];
if( !empty( $Comment->item_ID ) )
{
$comment_Item = & $Comment->get_Item();
$Collection = $Blog = & $comment_Item->get_Blog();
}
}
if( empty( $Blog ) )
{ // Comment is not set, try global Blog
global $Collection, $Blog;
if( empty( $Blog ) )
{ // We can't get a Blog, this way "apply_comment_rendering" plugin collection setting is not available
return false;
}
}
$apply_rendering = $this->get_coll_setting( 'coll_apply_comment_rendering', $Blog );
if( ! empty( $apply_rendering ) && $apply_rendering != 'never' )
{
return $this->display_toolbar( $params );
}
return false;
}
/**
* Event handler: Called when displaying editor toolbars for message.
*
* @param array Associative array of parameters
* @return boolean did we display a toolbar?
*/
function DisplayMessageToolbar( & $params )
{
$apply_rendering = $this->get_msg_setting( 'msg_apply_rendering' );
if( ! empty( $apply_rendering ) && $apply_rendering != 'never' )
{
return $this->display_toolbar( $params );
}
return false;
}
/**
* Event handler: Called when displaying editor toolbars for email.
*
* @param array Associative array of parameters
* @return boolean did we display a toolbar?
*/
function DisplayEmailToolbar( & $params )
{
$apply_rendering = $this->get_email_setting( 'email_apply_rendering' );
if( ! empty( $apply_rendering ) && $apply_rendering != 'never' )
{
return $this->display_toolbar( $params );
}
return false;
}
/**
* Event handler: Called when displaying editor toolbars on post/item form.
*
* This is for post/item edit forms only. Comments, PMs and emails use different events.
*
* @param array Associative array of parameters
* @return boolean did we display a toolbar?
*/
function AdminDisplayToolbar( & $params )
{
if( !empty( $params['Item'] ) )
{ // Item is set, get Blog from post
$edited_Item = & $params['Item'];
$Collection = $Blog = & $edited_Item->get_Blog();
}
if( empty( $Blog ) )
{ // Item is not set, try global Blog
global $Collection, $Blog;
if( empty( $Blog ) )
{ // We can't get a Blog, this way "apply_rendering" plugin collection setting is not available
return false;
}
}
$apply_rendering = $this->get_coll_setting( 'coll_apply_rendering', $Blog );
if( empty( $apply_rendering ) || $apply_rendering == 'never' )
{ // Don't display toolbar:
return false;
}
// Display toolbar
$this->display_toolbar( $params );
}
/**
* Display toolbar
*
* @param array Params
*/
function display_toolbar( $params )
{
$params = array_merge( array(
'js_prefix' => '', // Use different prefix if you use several toolbars on one page
), $params );
// Codespan buttons:
echo $this->get_template( 'toolbar_before', array( '$toolbar_class$' => $params['js_prefix'].$this->code.'_toolbar' ) );
echo $this->get_template( 'toolbar_title_before' ).T_('Codespan').': '.$this->get_template( 'toolbar_title_after' );
echo $this->get_template( 'toolbar_group_before' );
echo '<input type="button" title="'.T_('Insert Markup codespan').'" class="'.$this->get_template( 'toolbar_button_class' ).'" data-func="'.$params['js_prefix'].'prism_tag|markup|span" value="'.format_to_output( T_('Markup'), 'htmlattr' ).'" />';
echo '<input type="button" title="'.T_('Insert CSS codespan').'" class="'.$this->get_template( 'toolbar_button_class' ).'" data-func="'.$params['js_prefix'].'prism_tag|css|span" value="CSS" />';
echo '<input type="button" title="'.T_('Insert JavaScript codespan').'" class="'.$this->get_template( 'toolbar_button_class' ).'" data-func="'.$params['js_prefix'].'prism_tag|javascript|span" value="JS" />';
echo '<input type="button" title="'.T_('Insert PHP codespan').'" class="'.$this->get_template( 'toolbar_button_class' ).'" data-func="'.$params['js_prefix'].'prism_tag|php|span" value="PHP" />';
echo '<input type="button" title="'.T_('Insert SQL codespan').'" class="'.$this->get_template( 'toolbar_button_class' ).'" data-func="'.$params['js_prefix'].'prism_tag|sql|span" value="SQL" />';
echo '<input type="button" title="'.T_('Insert Apache codespan').'" class="'.$this->get_template( 'toolbar_button_class' ).'" data-func="'.$params['js_prefix'].'prism_tag|apacheconf|span" value="Apache" />';
echo $this->get_template( 'toolbar_group_after' );
echo $this->get_template( 'toolbar_after' );
// Codeblock buttons:
echo $this->get_template( 'toolbar_before', array( '$toolbar_class$' => $params['js_prefix'].$this->code.'_toolbar' ) );
echo $this->get_template( 'toolbar_title_before' ).T_('Codeblock').': '.$this->get_template( 'toolbar_title_after' );
echo $this->get_template( 'toolbar_group_before' );
echo '<input type="button" title="'.T_('Insert Markup codeblock').'" class="'.$this->get_template( 'toolbar_button_class' ).'" data-func="'.$params['js_prefix'].'prism_tag|markup" value="'.format_to_output( T_('Markup'), 'htmlattr' ).'" />';
echo '<input type="button" title="'.T_('Insert CSS codeblock').'" class="'.$this->get_template( 'toolbar_button_class' ).'" data-func="'.$params['js_prefix'].'prism_tag|css" value="CSS" />';
echo '<input type="button" title="'.T_('Insert JavaScript codeblock').'" class="'.$this->get_template( 'toolbar_button_class' ).'" data-func="'.$params['js_prefix'].'prism_tag|javascript" value="JS" />';
echo '<input type="button" title="'.T_('Insert PHP codeblock').'" class="'.$this->get_template( 'toolbar_button_class' ).'" data-func="'.$params['js_prefix'].'prism_tag|php" value="PHP" />';
echo '<input type="button" title="'.T_('Insert SQL codeblock').'" class="'.$this->get_template( 'toolbar_button_class' ).'" data-func="'.$params['js_prefix'].'prism_tag|sql" value="SQL" />';
echo '<input type="button" title="'.T_('Insert Apache codeblock').'" class="'.$this->get_template( 'toolbar_button_class' ).'" data-func="'.$params['js_prefix'].'prism_tag|apacheconf" value="Apache" />';
echo $this->get_template( 'toolbar_group_after' );
echo $this->get_template( 'toolbar_after' );
// Load js to work with textarea
require_js( 'functions.js', 'blog', true, true );
?><script type="text/javascript">
//<![CDATA[
function <?php echo $params['js_prefix']; ?>prism_tag( lang, type )
{
var line = '';
switch( type )
{
case 'span':
type = 'codespan';
break;
case 'block':
default:
type = 'codeblock';
line = ' line="1"';
break;
}
textarea_wrap_selection( <?php echo $params['js_prefix']; ?>b2evoCanvas, '['+type+' lang="'+lang+'"'+line+']', '[/'+type+']', 0 );
}
//]]>
</script><?php
return true;
}
private function add_requires() {
if ($this->my_debug) {
$this->require_js( 'js/prism.js' );
$this->require_css( 'css/prism.css' );
} else {
$this->require_js( 'js/prism.min.js' );
$this->require_css( 'css/prism.min.css' );
}
}
}
?>