geshi.php

mambo的cms源代码

		// Perhaps some checking might be added here later to check that
		// $language data is a valid thing but maybe not
		$this->language_data = $language_data;
		// Set strict mode if should be set
		if ( $this->language_data['STRICT_MODE_APPLIES'] == GESHI_ALWAYS )
		{
			$this->strict_mode = true;
		}
		// Set permissions for all lexics to true
		// so they'll be highlighted by default
		$this->enable_highlighting();
		// Set default class for CSS
		$this->overall_class = $this->language;
	}

	/**
	 * method: get_tab_replacement
	 * ---------------------------
	 * Gets the replacement string for tabs in the source code. Useful for
	 * HTML highlighting, where tabs don't mean anything to a browser.
	 */
	function get_tab_replacement ()
	{
		$i = 0;
		$result = '';
		while ( $i < $this->tab_width )
		{
			$i++;
			if ( $i % 2 == 0 )
			{
				$result .= ' ';
			}
			else
			{
				$result .= '&nbsp;';
			}
		}
		return $result;
	}

	/**
	 * method: finalise
	 * ----------------
	 * Takes the parsed code and various options, and creates the HTML
	 * surrounding it to make it look nice.
	 */
	function finalise ( $parsed_code )
	{
		// Remove end parts of important declarations
		// This is BUGGY!! My fault for bad code: fix coming in 1.2
		if ( $this->enable_important_blocks && (strstr($parsed_code, htmlentities(GESHI_START_IMPORTANT, ENT_COMPAT, $this->encoding)) === false) )
		{
			$parsed_code = str_replace(htmlentities(GESHI_END_IMPORTANT, ENT_COMPAT, $this->encoding), '', $parsed_code);
		}

		// Add HTML whitespace stuff if we're using the <div> header
		if ( $this->header_type == GESHI_HEADER_DIV )
		{
			$parsed_code = $this->indent($parsed_code);
		}

		// If we're using line numbers, we insert <li>s and appropriate
		// markup to style them (otherwise we don't need to do anything)
		if ( $this->line_numbers != GESHI_NO_LINE_NUMBERS )
		{
			// If we're using the <pre> header, we shouldn't add newlines because
			// the <pre> will line-break them (and the <li>s already do this for us)
			$ls = ( $this->header_type != GESHI_HEADER_PRE ) ? "\n" : '';
			// Get code into lines
			$code = explode("\n", $parsed_code);
			// Set vars to defaults for following loop
			$parsed_code = '';
			$i = 0;
			// Foreach line...
			foreach ( $code as $line )
			{
				$line = ( $line ) ? $line : '&nbsp;';
				// If this is a "special line"...
				if ( $this->line_numbers == GESHI_FANCY_LINE_NUMBERS && $i % $this->line_nth_row == ($this->line_nth_row - 1) )
				{
					// Set the attributes to style the line
					if ( $this->use_classes )
					{
						$attr = ' class="li2"';
						$def_attr = ' class="de2"';
					}
					else
					{
						$attr = ' style="' . $this->line_style2 . '"';
						// This style "covers up" the special styles set for special lines
						// so that styles applied to special lines don't apply to the actual
						// code on that line
						$def_attr = ' style="' . $this->code_style . '"';
					}
					// Span or div?
					$start = "<div$def_attr>";
					$end = '</div>';
				}
				else
				{
					if ( $this->use_classes )
					{
						$def_attr = ' class="de1"';
					}
					else
					{
						$def_attr = ' style="' . $this->code_style . '"';
					}
					// Reset everything
					$attr = '';
					// Span or div?
					$start = "<div$def_attr>";
					$end = '</div>';
				}

				++$i;
				// Are we supposed to use ids? If so, add them
				if ( $this->add_ids )
				{
					$attr .= " id=\"{$this->overall_id}-{$i}\"";
				}
				if ( $this->use_classes && in_array($i, $this->highlight_extra_lines) )
				{
					$attr .= " class=\"ln-xtra\"";
				}
				if ( !$this->use_classes && in_array($i, $this->highlight_extra_lines) )
				{
					$attr .= " style=\"{$this->highlight_extra_lines_style}\"";
				}

				// Add in the line surrounded by appropriate list HTML
				$parsed_code .= "<li$attr>$start$line$end</li>$ls";
			}
		}
		else
		{
			// No line numbers, but still need to handle highlighting lines extra.
			// Have to use divs so the full width of the code is highlighted
			$code = explode("\n", $parsed_code);
			$parsed_code = '';
			$i = 0;
			foreach ( $code as $line )
			{
				// Make lines have at least one space in them if they're empty
				$line = ( $line ) ? $line : '&nbsp;';
				if ( in_array(++$i, $this->highlight_extra_lines) )
				{
					if ( $this->use_classes )
					{
						//$id = ( $this->overall_id != '' ) ? $this->overall_id . "-$i" : $this->overall_class . "-$i";
						$parsed_code .= '<div class="ln-xtra">';
					}
					else
					{
						$parsed_code .= "<div style=\"{$this->highlight_extra_lines_style}\">";
					}
					$parsed_code .= $line . "</div>\n";
				}
				else
				{
					$parsed_code .= $line . "\n";
				}
			}
		}

		return $this->header() . chop($parsed_code) . $this->footer();
	}


	/**
	 * method: header
	 * --------------
	 * Creates the header for the code block (with correct attributes)
	 */
	function header ()
	{
		// Get attributes needed
		$attributes = $this->get_attributes();

		if ( $this->use_classes )
		{
			$ol_attributes = '';
		}
		else
		{
			$ol_attributes = ' style="margin: 0;"';
		}

		if ( $this->line_numbers_start != 1 )
		{
			$ol_attributes .= ' start="' . $this->line_numbers_start . '"';
		}

		// Get the header HTML
		$header = $this->format_header_content();

		// Work out what to return and do it
		if ( $this->line_numbers != GESHI_NO_LINE_NUMBERS )
		{
			if ( $this->header_type == GESHI_HEADER_PRE )
			{
				return "<pre$attributes>$header<ol$ol_attributes>";
			}
			elseif ( $this->header_type == GESHI_HEADER_DIV )
			{
				return "<div$attributes>$header<ol$ol_attributes>";
			}
		}
		else
		{
			if ( $this->header_type == GESHI_HEADER_PRE )
			{
				return "<pre$attributes>$header";
			}
			elseif ( $this->header_type == GESHI_HEADER_DIV )
			{
				return "<div$attributes>$header";
			}
		}
	}


	/**
	 * method: format_header_content
	 * -----------------------------
	 * Returns the header content, formatted for output
	 */
	function format_header_content ()
	{
		$header = $this->header_content;
		if ( $header )
		{
			if ( $this->header_type == GESHI_HEADER_PRE )
			{
				$header = str_replace("\n", '', $header);
			}
			$header = $this->replace_keywords($header);

			if ( $this->use_classes )
			{
				$attr = ' class="head"';
			}
			else
			{
				$attr = " style=\"{$this->header_content_style}\"";
			}
			return "<div$attr>$header</div>";
		}
	}


	/**
	 * method: footer
	 * --------------
	 * Returns the footer for the code block. Ending newline removed in 1.0.2
	 */
	function footer ()
	{
		$footer_content = $this->format_footer_content();

		if ( $this->header_type == GESHI_HEADER_DIV )
		{
			if ( $this->line_numbers != GESHI_NO_LINE_NUMBERS )
			{
				return "</ol>$footer_content</div>";
			}
			return "$footer_content</div>";
		}
		else
		{
			if ( $this->line_numbers != GESHI_NO_LINE_NUMBERS )
			{
				return "</ol>$footer_content</pre>";
			}
			return "$footer_content</pre>";
		}
	}


	/**
	 * method: format_footer_content
	 * -----------------------------
	 * Returns the footer content, formatted for output
	 */
	function format_footer_content ()
	{
		$footer = $this->footer_content;
		if ( $footer )
		{
			if ( $this->header_type == GESHI_HEADER_PRE )
			{
				$footer = str_replace("\n", '', $footer);;
			}
			$footer = $this->replace_keywords($footer);

			if ( $this->use_classes )
			{
				$attr = ' class="foot"';
			}
			else
			{
				$attr = " style=\"{$this->footer_content_style}\">";
			}
			return "<div$attr>$footer</div>";
		}
	}


	/**
	 * method: replace_keywords
	 * ----------------------
	 * Replaces certain keywords in the header and footer with
	 * certain configuration values
	 */
	function replace_keywords ( $instr )
	{
		$keywords = $replacements = array();

		$keywords[] = '<TIME>';
		$replacements[] = number_format($this->get_time(), 3);

		$keywords[] = '<LANGUAGE>';
		$replacements[] = $this->language;

		$keywords[] = '<VERSION>';
		$replacements[] = '1.0.4';

		return str_replace($keywords, $replacements, $instr);
	}

	/**
	 * method: get_attributes
	 * ----------------------
	 * Gets the CSS attributes for this code
	 */
	function get_attributes ()
	{
		$attributes = '';

		if ( $this->overall_class != '' && $this->use_classes )
		{
			$attributes .= " class=\"{$this->overall_class}\"";
		}
		if ( $this->overall_id != '' )
		{
			$attributes .= " id=\"{$this->overall_id}\"";
		}
		if ( $this->overall_style != '' && !$this->use_classes )
		{
			$attributes .= ' style="' . $this->overall_style . '"';
		}
		return $attributes;
	}


	/**
	 * method: get_stylesheet
	 * ----------------------
	 * Returns a stylesheet for the highlighted code. If $economy mode
	 * is true, we only return the stylesheet declarations that matter for
	 * this code block instead of the whole thing
	 */
	function get_stylesheet ( $economy_mode = true )
	{
		// If there's an error, chances are that the language file
		// won't have populated the language data file, so we can't
		// risk getting a stylesheet...
		if ( $this->error )
		{
			return '';
		}
		// First, work out what the selector should be. If there's an ID,
		// that should be used, the same for a class. Otherwise, a selector
		// of '' means that these styles will be applied anywhere
		$selector = ( $this->overall_id != '' ) ? "#{$this->overall_id} " : '';
		$selector = ( $selector == '' && $this->overall_class != '' ) ? ".{$this->overall_class} " : $selector;

		// Header of the stylesheet
		if ( !$economy_mode )
		{
			$stylesheet = "/**\n * GeSHi Dynamically Generated Stylesheet\n * --------------------------------------\n * Dynamically generated stylesheet for {$this->language}\n * CSS class: {$this->overall_class}, CSS id: {$this->overall_id}\n * GeSHi (c) Nigel McNie 2004 (http://qbnz.com/highlighter)\n */\n";
 		}
		else
		{
			$stylesheet = '/* GeSHi (c) Nigel McNie 2004 (http://qbnz.com/highlighter) */' . "\n";
		}

		// Set the <ol> to have no effect at all if there are line numbers
		// (<ol>s have margins that should be destroyed so all layout is
		// controlled by the set_overall_style method, which works on the
		// <pre> or <div> container). Additionally, set default styles for lines
		if ( !$economy_mode || $this->line_numbers != GESHI_NO_LINE_NUMBERS )
		{
			$stylesheet .= "$selector, {$selector}ol, {$selector}ol li {margin: 0;}\n";
			$stylesheet .= "$selector.de1, $selector.de2 {{$this->code_style}}\n";
		}

		// Add overall styles
		if ( !$economy_mode || $this->overall_style != '' )
		{
			$stylesheet .= "$selector {{$this->overall_style}}\n";
		}

		// Add styles for links
		foreach ( $this->link_styles as $key => $style )
		{
			if ( !$economy_mode || $key == GESHI_LINK && $style != '' )
			{
				$stylesheet .= "{$selector}a:link {{$style}}\n";
			}
			if ( !$economy_mode || $key == GESHI_HOVER && $style != '' )
			{
				$stylesheet .= "{$selector}a:hover {{$style}}\n";
			}
			if ( !$economy_mode || $key == GESHI_ACTIVE && $style != '' )
			{
				$stylesheet .= "{$selector}a:active {{$style}}\n";
			}
			if ( !$economy_mode || $key == GESHI_VISITED && $style != '' )
			{
				$stylesheet .= "{$selector}a:visited {{$style}}\n";
			}
		}

		// Header and footer
		if ( !$economy_mode || $this->header_content_style != '' )
		{
			$stylesheet .= "$selector.head {{$this->header_content_style}}\n";
		}
		if ( !$economy_mode || $this->footer_content_style != '' )
		{
			$stylesheet .= "$selector.foot {{$this->footer_content_style}}\n";
		}

		// Styles for important stuff
		if ( !$economy_mode || $this->important_styles != '' )
		{
			$stylesheet .= "$selector.imp {{$this->important_styles}}\n";
		}


		// Styles for lines being highlighted extra
		if ( !$economy_mode || count($this->highlight_extra_lines) )
		{
			/*foreach ( $this->highlight_extra_lines as $line )
			{
				$id = ( $this->overall_id != '' ) ? $this->overall_id . "-$line" : $this->overall_class . "-$line";
				$stylesheet .= "$selector#$id,";
			}*/
			$stylesheet .= "$selector.ln-xtra {{$this->highlight_extra_lines_style}}\n";
		}


		// Simple line number styles
		if ( !$economy_mode || ($this->line_numbers != GESHI_NO_LINE_NUMBERS && $this->line_style1 != '') )
		{
			$stylesheet .= "{$selector}li {{$this->line_style1}}\n";
		}

		// If there is a style set for fancy line numbers, echo it out
		if ( !$economy_mode || ($this->line_numbers == GESHI_FANCY_LINE_NUMBERS && $this->line_style2 != '') )
		{
			$stylesheet .= "{$sel