acp_styles.php

这些都是我以前学习是用到的源码

		$filemtime = array();
		if ($template_row['template_storedb'])
		{
			$sql = 'SELECT template_filename, template_mtime
				FROM ' . STYLES_TEMPLATE_DATA_TABLE . "
				WHERE template_id = $template_id";
			$result = $db->sql_query($sql);

			$filemtime = array();
			while ($row = $db->sql_fetchrow($result))
			{
				$filemtime[$row['template_filename']] = $row['template_mtime'];
			}
			$db->sql_freeresult($result);
		}

		// Get a list of cached template files and then retrieve additional information about them
		$file_ary = $this->template_cache_filelist($template_row['template_path']);

		foreach ($file_ary as $file)
		{
			$filename = "{$cache_prefix}_$file.html.$phpEx";

			$template->assign_block_vars('file', array(
				'U_VIEWSOURCE'	=> $this->u_action . "&action=cache&id=$template_id&source=$file",
				'UA_VIEWSOURCE'	=> str_replace('&', '&', $this->u_action) . "&action=cache&id=$template_id&source=$file",

				'CACHED'		=> $user->format_date(filemtime("{$phpbb_root_path}cache/$filename")),
				'FILENAME'		=> $file,
				'FILESIZE'		=> sprintf('%.1f KB', filesize("{$phpbb_root_path}cache/$filename") / 1024),
				'MODIFIED'		=> $user->format_date((!$template_row['template_storedb']) ? filemtime("{$phpbb_root_path}styles/{$template_row['template_path']}/template/$file.html") : $filemtime[$file . '.html']))
			);
		}
		unset($filemtime);

		$template->assign_vars(array(
			'S_CACHE'			=> true,
			'S_TEMPLATE'		=> true,

			'U_ACTION'			=> $this->u_action . "&action=cache&id=$template_id",
			'U_BACK'			=> $this->u_action)
		);
	}

	/**
	* Provides a css editor and a basic easier to use stylesheet editing tool for less experienced (or lazy) users
	*
	* @param int $theme_id specifies which theme is being edited
	*/
	function edit_theme($theme_id)
	{
		global $phpbb_root_path, $phpbb_admin_path, $phpEx, $config, $db, $cache, $user, $template, $safe_mode;

		$this->page_title = 'EDIT_THEME';

		// we want newlines no carriage returns!
		$_POST['css_data'] = (isset($_POST['css_data']) && !empty($_POST['css_data'])) ? str_replace(array("\r\n", "\r"), array("\n", "\n"), $_POST['css_data']) : '';

		// get user input
		$text_rows		= max(5, min(999, request_var('text_rows', 20)));
		$hide_css		= request_var('hidecss', false);
		$show_css		= !$hide_css && request_var('showcss', false);
		$edit_class		= request_var('css_class', '');
		$custom_class	= request_var('custom_class', '');
		$css_data		= (STRIP) ? stripslashes($_POST['css_data']) : $_POST['css_data'];
		$submit			= isset($_POST['submit']) ? true : false;
		$add_custom		= isset($_POST['add_custom']) ? true : false;
		$matches		= array();

		// Retrieve some information about the theme
		$sql = 'SELECT theme_storedb, theme_path, theme_name, theme_data
			FROM ' . STYLES_THEME_TABLE . "
			WHERE theme_id = $theme_id";
		$result = $db->sql_query($sql);

		if (!($theme_info = $db->sql_fetchrow($result)))
		{
			trigger_error($user->lang['NO_THEME'] . adm_bacl_link($this->u_action), E_USER_WARNING);
		}
		$db->sql_freeresult($result);

		$stylesheet_path = $phpbb_root_path . 'styles/' . $theme_info['theme_path'] . '/theme/stylesheet.css';
		// Get the CSS data from either database or filesystem
		if (!$theme_info['theme_storedb'])
		{
			if (!file_exists($stylesheet_path) || !($stylesheet = file_get_contents($stylesheet_path)))
			{
				trigger_error($user->lang['NO_THEME'] . adm_back_link($this->u_action), E_USER_WARNING);
			}
		}
		else
		{
			$stylesheet = &$theme_info['theme_data'];
		}

		// Pull out a list of classes
		$classes = array();
		if (preg_match_all('/^([a-z0-9\.,:#> \t]+?)[ \t\n]*?\{.*?\}/msi', $stylesheet, $matches))
		{
			$classes = $matches[1];
		}

		// Generate html for the list of classes
		$s_hidden_fields = array();
		$s_classes = '';
		sort($classes);
		foreach ($classes as $class)
		{
			$selected = ($class == $edit_class) ? ' selected="selected"' : '';
			$s_classes .= '<option value="' . $class . '" title="' . $class . '"' . $selected . '>' . truncate_string($class, 40, false, '...') . '</option>';
		}

		$template->assign_vars(array(
			'S_EDIT_THEME'		=> true,
			'S_SHOWCSS'			=> $show_css,
			'S_CLASSES'			=> $s_classes,
			'S_CLASS'			=> $edit_class,

			'U_ACTION'			=> $this->u_action . "&amp;action=edit&amp;id=$theme_id&amp;showcss=$show_css&amp;text_rows=$text_rows",
			'U_BACK'			=> $this->u_action,

			'SELECTED_THEME'	=> $theme_info['theme_name'],
			'TEXT_ROWS'			=> $text_rows)
		);

		// only continue if we are really editing anything
		if (!$edit_class && !$add_custom)
		{
			return;
		}

		// These are the elements for the simple view
		$match_elements = array(
			'colors'	=> array('background-color', 'color',),
			'sizes'		=> array('font-size', 'line-height',),
			'images'	=> array('background-image',),
			'repeat'	=> array('background-repeat',),
			'other'		=> array('font-weight', 'font-family', 'font-style', 'text-decoration',),
		);

		// Used in an sprintf statement to generate appropriate output for rawcss mode
		$map_elements = array(
			'colors'	=> '%s',
			'sizes'		=> '%1.10f',
			'images'	=> 'url(\'./%s\')',
			'repeat'	=> '%s',
			'other'		=> '%s',
		);

		$units = array('px', '%', 'em', 'pt');
		$repeat_types = array(
			''			=> $user->lang['UNSET'],
			'none'		=> $user->lang['REPEAT_NO'],
			'repeat-x'	=> $user->lang['REPEAT_X'],
			'repeat-y'	=> $user->lang['REPEAT_Y'],
			'both'		=> $user->lang['REPEAT_ALL'],
		);

		// Fill css_data with the class contents from the stylesheet
		// in case we just selected a class and it's not filled yet
		if (!$css_data && !$submit && !isset($_POST['hidecss']) && !isset($_POST['showcss']) && !$add_custom)
		{
			preg_match('#^[ \t]*?' . preg_quote($edit_class, '#') . '[ \t\n]*?\{(.*?)\}#ms', $stylesheet, $matches);

			if (!isset($matches[1]))
			{
				trigger_error($user->lang['NO_CLASS'] . adm_back_link($this->u_action), E_USER_WARNING);
			}

			$css_data = implode(";\n", array_diff(array_map('trim', explode("\n", preg_replace("#;[\n]*#s", "\n", $matches[1]))), array('')));
			if ($css_data)
			{
				$css_data .= ';';
			}
		}

		// If we don't show raw css and the user did not submit any modification
		// then generate a list of css elements and output them via the template
		if (!$show_css && !$submit && !$add_custom)
		{
			$css_elements = array_diff(array_map('trim', explode("\n", preg_replace("#;[\n]*#s", "\n", $css_data))), array(''));

			// Grab list of potential images for the "images" type
			$img_filelist = filelist($phpbb_root_path . 'styles/' . $theme_info['theme_name'] . '/theme');

			foreach ($match_elements as $type => $match_ary)
			{
				foreach ($match_ary as $match)
				{
					$var = str_replace('-', '_', $match);
					$value = '';
					$unit = '';

					if (sizeof($css_elements))
					{
						// first read in the setting
						foreach ($css_elements as $key => $element)
						{
							if (preg_match('#^' . preg_quote($match, '#') . ':[ \t\n]*?(.*?)$#', $element, $matches))
							{
								switch ($type)
								{
									case 'sizes':
										$value = trim($matches[1]);

										if (preg_match('#(.*?)(px|%|em|pt)#', $matches[1], $matches))
										{
											$unit = trim($matches[2]);
											$value = trim($matches[1]);
										}
									break;

									case 'images':
										if (preg_match('#url\(\'(.*?)\'\)#', $matches[1], $matches))
										{
											$value = trim($matches[1]);
										}
									break;

									case 'colors':
										$value = trim($matches[1]);
										if ($value[0] == '#')
										{
											$value = substr($value, 1);
										}
									break;

									default:
										$value = trim($matches[1]);
								}

								// Remove this element from array
								unset($css_elements[$key]);
								break;
							}
						}
					}

					// then display it in the template
					switch ($type)
					{
						case 'sizes':
							// generate a list of units
							$s_units = '';
							foreach ($units as $unit_option)
							{
								$selected = ($unit_option == $unit) ? ' selected="selected"' : '';
								$s_units .= "<option value=\"$unit_option\"$selected>$unit_option</option>";
							}
							$s_units = '<option value=""' . (($unit == '') ? ' selected="selected"' : '') . '>' . $user->lang['NO_UNIT'] . '</option>' . $s_units;

							$template->assign_vars(array(
								strtoupper($var) => $value,
								'S_' . strtoupper($var) . '_UNITS' => $s_units)
							);
						break;

						case 'images':
							// generate a list of images for this setting
							$s_imglist = '';
							foreach ($img_filelist as $path => $img_ary)
							{
								foreach ($img_ary as $img)
								{
									$img = htmlspecialchars(((substr($path, 0, 1) == '/') ? substr($path, 1) : $path) . $img);

									$selected = (preg_match('#' . preg_quote($img) . '$#', $value)) ? ' selected="selected"' : '';
									$s_imglist .= "<option value=\"$img\"$selected>$img</option>";
								}
							}
							$s_imglist = '<option value=""' . (($value == '') ? ' selected="selected"' : '') . '>' . $user->lang['NO_IMAGE'] . '</option>' . $s_imglist;

							$template->assign_vars(array(
								'S_' . strtoupper($var) => $s_imglist)
							);
							unset($s_imglist);
						break;

						case 'repeat':
							// generate a list of repeat options
							$s_repeat_types = '';
							foreach ($repeat_types as $repeat_type => $repeat_lang)
							{
								$selected = ($value == $repeat_type) ? ' selected="selected"' : '';
								$s_repeat_types .= "<option value=\"$repeat_type\"$selected>$repeat_lang</option>";
							}

							$template->assign_vars(array(
								'S_' . strtoupper($var) => $s_repeat_types)
							);

						default:
							$template->assign_vars(array(
								strtoupper($var) => $value)
							);
					}
				}
			}

			// Any remaining elements must be custom data so we save that in a hidden field
			if (sizeof($css_elements))
			{
				$s_hidden_fields['cssother'] = implode(' ;; ', $css_elements);
			}

			unset($img_filelist, $css_elements);
		}
		// else if we are showing raw css or the user submitted data from the simple view
		// then we need to turn the given information into raw css
		elseif (!$css_data && !$add_custom)
		{
			foreach ($match_elements as $type => $match_ary)
			{
				foreach ($match_ary as $match)
				{
					$var = str_replace('-', '_', $match);
					$value = '';
					$unit = '';

					// retrieve and validate data for this setting
					switch ($type)
					{
						case 'sizes':
							$value = request_var($var, 0.0);
							$unit = request_var($var . '_unit', '');

							if ((request_var($var, '') === '') || !in_array($unit, $units))
							{
								$value = '';
							}
						break;

						case 'images':
							$value = str_replace('..', '.', request_var($var, ''));
							if (!file_exists("{$phpbb_root_path}styles/{$theme_info['theme_path']}/theme/" . $value))
							{
								$value = '';
							}
						break;

						case 'colors':
							$value = request_var($var, '');
							if (preg_match('#^(?:[A-F0-9]{6}|[A-F0-9]{3})$#', $value))
							{
								$value = '#' . $value;
							}
						break;

						case 'repeat':
							$value = request_var($var, '');
							if (!isset($repeat_types[$value]))
							{
								$value = '';
							}
						break;

						default:
							$value = request_var($var, '');
					}

					// use the element mapping to create raw css code
					if ($value !== '')
					{
						$css_data .= $match . ': ' . ($type == 'sizes' ? rtrim(sprintf($map_elements[$type], $value), '0') : sprintf($map_elements[$type], $value)) . $unit . ";\n";
					}
				}
			}

			// append additional data sent to us
			if ($other = request_var('cssother', ''))
			{
				$css_data .= str_replace(' ;; ', ";\n", $other) . ';';
				$css_data = preg_replace("#\*/;\n#", "*/\n", $css_data);
			}
		}
		// make sure we have $show_css set, so we can link to the show_css page if we need to
		elseif (!$hide_css)
		{
			$show_css = true;
		}

		if ($submit || $add_custom)
		{
			if ($submit)
			{
				// if the user submitted a modification replace the old class definition in the stylesheet
				// with the new one
				if (preg_match('#^' . preg_quote($edit_class, '#') . '[ \t\n]*?\{(.*?)\}#ms', $stylesheet))
				{
					$stylesheet = preg_replace('#^(' . preg_quote($edit_class, '#') . '[ \t\n]*?\{).*?(\})#ms', "$1\n\t" . str_replace("\n", "\n\t", $css_data) . "\n$2", $stylesheet);
				}
				$message = $user->lang['THEME_UPDATED'];
			}
			else
			{
				// check whether the custom class name is valid
				if (!preg_match('/^[a-z0-9#:.\- ]+$/i', $add_custom))
				{
					trigger_error($user->lang['THEME_ERR_CLASS_CHARS'] . adm_back_link($this->u_action . "&amp;action=edit&amp;id=$theme_id&amp;text_rows=$text_rows"), E_USER_WARNING);
				}
				else
				{
					// append an empty class definition to the stylesheet
					$stylesheet .= "\n$custom_class\n{\n}";
					$message = $user->lang['THEME_CLASS_ADDED'];
				}
			}

			// where should we store the CSS?
			if (!$safe_mode && !$theme_info['theme_storedb'] && file_exists($stylesheet_path) && is_writeable($stylesheet_path))
			{
				// write stylesheet to file
				if (!($fp = fopen($stylesheet_path, 'wb')))
				{
					trigger_error($user->lang['NO_THEME'] . adm_back_link($this->u_action), E_USER_WARNING);
				}
				fwrite($fp, $stylesheet);
				fclose($fp);
			}
			else
			{
				// Write stylesheet to db
				$sql_ary = array(
					'theme_mtime'		=> time(),
					'theme_storedb'		=> 1,
					'theme_data'		=> $this->db_theme_data($theme_info, $stylesheet),
				);
				$sql = 'UPDATE ' . STYLES_THEME_TABLE . '
					SET ' . $db->sql_build_array('UPDATE', $sql_ary) . '
					WHERE theme_id = ' . $theme_id;
				$db->sql_query($sql);

				$cache->destroy('sql', STYLES_THEME_TABLE);