{

/** 默认不解析的标签列表 */

const LOCKED_HTML_TAG = 'code|pre|script';

/** 需要去除内部换行的标签 */

const ESCAPE_HTML_TAG = 'div|blockquote|object|pre|table|fieldset|tr|th|td|li|ol|ul|h[1-6]';

/** 元素标签 */

const ELEMENT_HTML_TAG = 'div|blockquote|pre|td|li';

/** 布局标签 */

const GRID_HTML_TAG = 'div|blockquote|pre|code|script|table|ol|ul';

/** 独立段落标签 */

const PARAGRAPH_HTML_TAG = 'div|blockquote|pre|code|script|table|fieldset|ol|ul|h[1-6]';

/**

private static $_lockedBlocks = array('<p></p>' => '');

/**

public static function __lock_html(array $matches)

{

$guid = '<code>' . uniqid(time()) . '</code>';

self::$_lockedBlocks[$guid] = $matches[0];

return $guid;

}

/**

public static function split_by_count($count)

{

$sizes = func_get_args();

array_shift($sizes);

foreach ($sizes as $size)

{

if ($count < $size)

{

return $size;

}

}

return 0;

}

/**

public function split($count)

{

$args = func_get_args();

array_unshift($args, $count);

return call_user_func_array(array('Common', 'split_by_count'), $args);

}

/**

public static function fix_html($string)

{

//关闭自闭合标签

$startPos = strrpos($string, "<");

if (false == $startPos)

{

return $string;

}

$trimString = substr($string, $startPos);

if (false === strpos($trimString, ">"))

{

$string = substr($string, 0, $startPos);

}

//非自闭合html标签列表

preg_match_all("/<([_0-9a-zA-Z-\:]+)\s*([^>]*)>/is", $string, $startTags);

preg_match_all("/<\/([_0-9a-zA-Z-\:]+)>/is", $string, $closeTags);

if (!empty($startTags[1]) && is_array($startTags[1]))

{

krsort($startTags[1]);

$closeTagsIsArray = is_array($closeTags[1]);

foreach ($startTags[1] as $key => $tag)

{

$attrLength = strlen($startTags[2][$key]);

if ($attrLength > 0 && "/" == trim($startTags[2][$key][$attrLength - 1]))

{

continue;

}

if (!empty($closeTags[1]) && $closeTagsIsArray)

{

if (false !== ($index = array_search($tag, $closeTags[1])))

{

unset($closeTags[1][$index]);

continue;

}

}

$string .= "</{$tag}>";

}

}

return preg_replace("/\<br\s*\/\>\s*\<\/p\>/is", '</p>', $string);

}

/**

public static function stripTags($string, $allowableTags = NULL)

{

if (!empty($allowableTags) && preg_match_all("/\<([a-z]+)([^>]*)\>/is", $allowableTags, $tags))

{

if (in_array('code', $tags[1]))

{

$string = preg_replace_callback("/<(code)[^>]*>.*?<\/\\1>/is", array('Common', '__lock_html'), $string);

}

$normalizeTags = '<' . implode('><', $tags[1]) . '>';

$string = strip_tags($string, $normalizeTags);

$attributes = array_map('trim', $tags[2]);

$allowableAttributes = array();

foreach ($attributes as $key => $val)

{

$allowableAttributes[$tags[1][$key]] = array();

if (preg_match_all("/([a-z]+)\s*\=/is", $val, $vals))

{

foreach ($vals[1] as $attribute)

{

$allowableAttributes[$tags[1][$key]][] = $attribute;

}

}

}

foreach ($tags[1] as $key => $val)

{

$match = "/\<{$val}(\s*[a-z]+\s*\=\s*[\"'][^\"']*[\"'])*\s*\>/is";

if (preg_match_all($match, $string, $out))

{

foreach ($out[0] as $startTag)

{

if (preg_match_all("/([a-z]+)\s*\=\s*[\"'][^\"']*[\"']/is", $startTag, $attributesMatch))

{

$replace = $startTag;

foreach ($attributesMatch[1] as $attribute)

{

if (!in_array($attribute, $allowableAttributes[$val]))

{

$startTag = preg_replace("/\s*{$attribute}\s*=\s*[\"'][^\"']*[\"']/is", '', $startTag);

}

}

$string = str_replace($replace, $startTag, $string);

}

}

}

}

return str_replace(array_keys(self::$_lockedBlocks), array_values(self::$_lockedBlocks), $string);

}

else

{

return strip_tags($string);

}

}

/**

public static function filter_search($query)

{

return str_replace(array('%', '?', '*', '/', '{', '}'), '', $query);

}

/**

public static function subStr($str, $start, $length, $trim = "...", $charset = 'UTF-8')

{

if (function_exists('mb_get_info'))

{

$iLength = mb_strlen($str, $charset);

$str = mb_substr($str, $start, $length, $charset);

return ($length < $iLength - $start) ? $str . $trim : $str;

}

else

{

preg_match_all("/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|\xe0[\xa0-\xbf][\x80-\xbf]|[\xe1-\xef][\x80-\xbf][\x80-\xbf]|\xf0[\x90-\xbf][\x80-\xbf][\x80-\xbf]|[\xf1-\xf7][\x80-\xbf][\x80-\xbf][\x80-\xbf]/", $str, $info);

$str = join("", array_slice($info[0], $start, $length));

return ($length < (sizeof($info[0]) - $start)) ? $str . $trim : $str;

}

}

/**

public static function strLen($str, $charset = 'UTF-8')

{

if (function_exists('mb_get_info'))

{

return mb_strlen($str, $charset);

}

else

{

preg_match_all("/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|\xe0[\xa0-\xbf][\x80-\xbf]|[\xe1-\xef][\x80-\xbf][\x80-\xbf]|\xf0[\x90-\xbf][\x80-\xbf][\x80-\xbf]|[\xf1-\xf7][\x80-\xbf][\x80-\xbf][\x80-\xbf]/", $str, $info);

return sizeof($info[0]);

}

}

/**

public static function repair_slugName($str, $default = NULL, $maxLength = 200,$charset = 'UTF-8')

{

$str = str_replace(array("'", ":", "\\", "/"), "", $str);

$str = str_replace(array("+", ",", " ", ".", "?", "=", "&", "!", "<", ">", "(", ")", "[", "]", "{", "}"), "_", $str);

$str = trim($str, '_');

$str = empty($str) ? $default : $str;

return function_exists('mb_get_info') ? mb_strimwidth($str, 0, 128, '', $charset) : substr($str, $maxLength);

}

/**

public static function remove_paragraph($html)

{

return trim(preg_replace(

array("/\s*<p>(.*?)<\/p>\s*/is", "/\s*<br\s*\/>\s*/is",

"/\s*<(" . self::PARAGRAPH_HTML_TAG . ")([^>]*)>/is", "/<\/(" . self::PARAGRAPH_HTML_TAG . ")>\s*/is", "/\s*\[\-\-break\-\-\]\s*/is"),

array("\n\\1\n", "\n", "\n\n<\\1\\2>", "</\\1>\n\n", "\n\n[--break--]\n\n"),

$html));

}

/**

public static function beautify_format($html)

{

/** 锁定标签 */

$html = preg_replace_callback("/<(" . self::LOCKED_HTML_TAG . ")[^>]*>.*?<\/\\1>/is", array('Common', '__lock_html'), $html);

$html = preg_replace("/\s*<(" . self::ELEMENT_HTML_TAG . ")([^>]*)>(.*?)<\/\\1>\s*/ise",

"str_replace('\\\"', '\"', '

<\\1\\2>' . trim('\\3') . '</\\1>')", $html);

$html = preg_replace("/<(p|" . self::PARAGRAPH_HTML_TAG . ")([^>]*)>(.*?)<\/\\1>/ise",

"str_replace('\\\"', '\"', '

')", $html);

$tags = implode('|', array_diff(explode('|', self::GRID_HTML_TAG), explode('|', self::LOCKED_HTML_TAG)));

$html = preg_replace("/<(" . $tags . ")([^>]*)>(.*?)<\/\\1>/ise",

"str_replace('\\\"', '\"', '<\\1\\2>

</\\1>')", $html);

$html = preg_replace("/\r*\n\r*/", "\n", $html);

$html = preg_replace("/\n{2,}/", "\n\n", $html);

return trim(str_replace(array_keys(self::$_lockedBlocks), array_values(self::$_lockedBlocks), $html));

}

/**

public static function cut_paragraph($string, $paragraph = true)

{

/** 锁定自闭合标签 */

$string = trim($string);

/** 返回空字符串 */

if (empty($string))

{

return '';

}

/** 锁定标签 */

$string = preg_replace_callback("/<(" . self::LOCKED_HTML_TAG . ")[^>]*>.*?<\/\\1>/is", array('Common', '__lock_html'), $string);

$string = preg_replace("/\s*<(" . self::ELEMENT_HTML_TAG . ")([^>]*)>(.*?)<\/\\1>\s*/ise",

"str_replace('\\\"', '\"', '<\\1\\2>' . Common::cut_paragraph(trim('\\3'), false) . '</\\1>')", $string);

$string = preg_replace("/<(" . self::ESCAPE_HTML_TAG . '|' . self::LOCKED_HTML_TAG . ")([^>]*)>(.*?)<\/\\1>/ise",

"str_replace('\\\"', '\"', '<\\1\\2>' . str_replace(array(\"\r\", \"\n\"), '', '\\3') . '</\\1>')", $string);

$string = preg_replace("/<(" . self::GRID_HTML_TAG . ")([^>]*)>(.*?)<\/\\1>/is", "\n\n<\\1\\2>\\3</\\1>\n\n", $string);

/** fix issue 197 */

$string = preg_replace("/\s*<p ([^>]*)>(.*?)<\/p>\s*/is", "\n\n<p \\1>\\2</p>\n\n", $string);

/** 区分段落 */

$string = preg_replace("/\r*\n\r*/", "\n", $string);

if ($paragraph || false !== strpos($string, "\n\n"))

{

$string = '<p>' . preg_replace("/\n{2,}/", "</p><p>", $string) . '</p>';

}

$string = str_replace("\n", '<br />', $string);

/** 去掉不需要的 */

$string = preg_replace("/<p><(" . self::ESCAPE_HTML_TAG . '|p|' . self::LOCKED_HTML_TAG

. ")([^>]*)>(.*?)<\/\\1><\/p>/is", "<\\1\\2>\\3</\\1>", $string);

return str_replace(array_keys(self::$_lockedBlocks), array_values(self::$_lockedBlocks), $string);

}

/**

public static function gravatar($email, $rating = 'X', $size = '80', $default = 'http://gravatar.com/avatar.php')

{

/** 对email进行hash编码 */

$email = md5($email);

/** 返回生成的url */

return "http://gravatar.com/avatar.php?gravatar_id="

.$email."&amp;rating="

.$rating."&amp;size="

.$size."&amp;default="

.$default;

}

/**

public static function dateWord($from, $now)

{

//fix issue 3#6 by saturn, solution by zycbob

/** 如果不是同一年 */

if (idate('Y', $now) != idate('Y', $from))

{

return date('Y年m月d日', $from);

}

/** 以下操作同一年的日期 */

$seconds = $now - $from;

$days = idate('z', $now) - idate('z', $from);

/** 如果是同一天 */

if ($days == 0)

{

/** 如果是一小时内 */

if ($seconds < 3600)

{

/** 如果是一分钟内 */

if ($seconds < 60)

{

if (3 > $seconds)

{

return '刚刚';

}

else

{

return sprintf('%d秒前', $seconds);

}

}

return sprintf('%d分钟前', intval($seconds / 60));

}

return sprintf('%d小时前', idate('H', $now) - idate('H', $from));

}

/** 如果是昨天 */

if ($days == 1)

{

return sprintf('昨天 %s', date('H:i', $from));

}

/** 如果是前天 */

if ($days == 2)

{

return sprintf('前天 %s', date('H:i', $from));

}

/** 如果是7天内 */

if ($days < 7)

{

return sprintf('%d天前', $days);

}

/** 超过一周 */

return date('n月j日', $from);

}

/**

public static function format_metas($metas = array(), $split = ',', $link = true)

{

$format = '';

if ($metas)

{

$result = array();

foreach ($metas as $meta)

{

$result[] = $link ? '<a href="' . site_url($meta['type'].'/'.$meta['slug']) . '">'

. $meta['name'] . '</a>' : $meta['name'];

}

$format = implode($split, $result);

}

return $format;

}

/**

public static function do_hash($string, $salt = NULL)

{

if(null === $salt)

{

$salt = substr(md5(uniqid(rand(), true)), 0, ST_SALT_LENGTH);

}

else

{

$salt = substr($salt, 0, ST_SALT_LENGTH);

}

return $salt . sha1($salt . $string);

}

/**

public static function hash_Validate($source, $target)

{

return (self::do_hash($source, $target) == $target);

}

/**

public static function array_flatten($value = array(), $key)

{

$result = array();

if($value)

{

foreach ($value as $inval)

{

if(is_array($inval) && isset($inval[$key]))

{

$result[] = $inval[$key];

}

else

{

break;

}

}

}

return $result;

}

/**

public static function mimeIconType($mime)

{

$parts = explode('/', $mime);

if(count($parts) < 2)

{

return 'unknown';

}

list($type, $stream) = $parts;

if(in_array($type, array('image', 'video', 'audio', 'text', 'application')))

{

switch (true)

{

case in_array($stream, array('msword', 'msaccess', 'ms-powerpoint', 'ms-powerpoint')):

case 0 === strpos($stream, 'vnd.'):

return 'office';

case false !== strpos($stream, 'html') || false !== strpos($stream, 'xml') || false !== strpos($stream, 'wml'):

return 'html';

case false !== strpos($stream, 'compressed') || false !== strpos($stream, 'zip') ||

in_array($stream, array('application/x-gtar', 'application/x-tar')):

return 'archive';

case 'text' == $type && 0 === strpos($stream, 'x-'):

return 'script';

default:

return $type;

}

}

else

{

return 'unknown';

}

}

/**

public static function get_excerpt($string)

{

/** 检查是否存在分割符标记 */

list($excerpt) = explode(ST_CONTENT_BREAK, $string);

$excerpt = (empty($excerpt))?$string:$excerpt;

$CI = &get_instance();

/** 如果没有安装任何编辑器插件，则需程序自动分段 */

if(!$CI->plugin->check_hook_exist(ST_CORE_HOOK_EDITOR))

{

$excerpt = self::remove_paragraph($excerpt);

$excerpt = self::cut_paragraph($excerpt);

}

return self::fix_html($excerpt);

}

/**

public static function get_content($string)

{

if(empty($string)) return;

if(self::has_break($string))

{

$string = self::remove_break($string);

}

$CI = &get_instance();

/** 如果没有安装任何编辑器插件，则需程序自动分段 */

if(!$CI->plugin->check_hook_exist(ST_CORE_HOOK_EDITOR))

{

$string = self::remove_paragraph($string);

$string = self::cut_paragraph($string);

}

return self::fix_html($string);

}

/**

public static function remove_break($content)

{

$content = str_replace(ST_CONTENT_BREAK, '', $content);

return $content;

}

/**

public static function has_break($content)

{

if(strpos($content, ST_CONTENT_BREAK) !== FALSE)

{

return TRUE;

}

return FALSE;

}

/**

public static function auto_closed($created, $now)

{

$lifetime = intval(setting_item('comments_auto_close'));

if(0 == $lifetime)

{

return FALSE;

}

$created = intval($created);

$lifetime = intval($lifetime);

if($created + $lifetime > $now)

{

return FALSE;

}

return TRUE;

}

/**

public static function render_feed_meta($type = 'default', $slug = NULL , $alt_title = '')

{

if(empty($type) || !in_array($type, array('default', 'post', 'category', 'tag')))

{

return;

}

/** 初始化默认值 */

$feed_rss_url = site_url('feed');

$feed_atom_url = site_url('feed/atom');

$alt_title = empty($alt_title) ? setting_item('blog_title') : htmlspecialchars($alt_title);

$parsed_feed = <<<EOT

EOT;

if('default' === $type)

{

return $parsed_feed;

}

else

{

$title = '订阅';

switch($type)

{

case 'post':

$title .= $alt_title . '下的评论';

break;

case 'category':

$title .= $alt_title . '分类下的文章';

break;

case 'tag':

$title .= $alt_title . '标签下的文章';

break;

}

return <<<EOT

EOT;

}

}

{

static $user_settings;

if(!isset($user_settings))

{

$CI = &get_instance();

$CI->load->library('stcache');

$settings = $CI->stcache->get('settings');

if(FALSE == $settings)

{

$query = $CI->db->get('settings');

foreach($query->result() as $row)

{

$settings[$row->name] = $row->value;

}

$query->free_result();

$CI->stcache->set('settings', $settings);

}

$user_settings[0] = &$settings;

}

return $user_settings[0];

{

static $setting_item = array();

if (!isset($setting_item[$item]))

{

$settings = &get_settings();

if (!isset($settings[$item]))

{

return FALSE;

}

$setting_item[$item] = $settings[$item];

}

return $setting_item[$item];