phpcms 模版源码分析

/**
* 模板调用
*
* @param $module
* @param $template
* @param $istag
* @return unknown_type
*/
function template($module = 'content', $template = 'index', $style = '') {

if(strpos($module, 'plugin/')!== false) {
$plugin = str_replace('plugin/', '', $module);
return p_template($plugin, $template,$style);
}
$module = str_replace('/', DIRECTORY_SEPARATOR, $module);
if(!empty($style) && preg_match('/([a-z0-9\-_]+)/is',$style)) {
} elseif (empty($style) && !defined('STYLE')) {
if(defined('SITEID')) {
$siteid = SITEID;
} else {
$siteid = param::get_cookie('siteid');
}
if (!$siteid) $siteid = 1;
$sitelist = getcache('sitelist','commons');
if(!empty($siteid)) {
$style = $sitelist[$siteid]['default_style'];
}
} elseif (empty($style) && defined('STYLE')) {
$style = STYLE;
} else {
$style = 'default';
}
if(!$style) $style = 'default';
$template_cache = pc_base::load_sys_class('template_cache');
$compiledtplfile = PHPCMS_PATH.'caches'.DIRECTORY_SEPARATOR.'caches_template'.DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.php';
if(file_exists(PC_PATH.'templates'.DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.html')) {
if(!file_exists($compiledtplfile) || (@filemtime(PC_PATH.'templates'.DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.html') > @filemtime($compiledtplfile))) {
$template_cache->template_compile($module, $template, $style);
}
} else {
$compiledtplfile = PHPCMS_PATH.'caches'.DIRECTORY_SEPARATOR.'caches_template'.DIRECTORY_SEPARATOR.'default'.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.php';
if(!file_exists($compiledtplfile) || (file_exists(PC_PATH.'templates'.DIRECTORY_SEPARATOR.'default'.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.html') && filemtime(PC_PATH.'templates'.DIRECTORY_SEPARATOR.'default'.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.html') > filemtime($compiledtplfile))) {
$template_cache->template_compile($module, $template, 'default');
} elseif (!file_exists(PC_PATH.'templates'.DIRECTORY_SEPARATOR.'default'.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.html')) {
showmessage('Template does not exist.'.DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.html');
}
}
return $compiledtplfile;
}

 

/**
* 模板解析缓存
*/
final class template_cache {

/**
* 编译模板
*
* @param $module 模块名称
* @param $template 模板文件名
* @param $istag 是否为标签模板
* @return unknown
*/

public function template_compile($module, $template, $style = 'default') {
if(strpos($module, '/')=== false) {
$tplfile = $_tpl = PC_PATH.'templates'.DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.html';
} elseif (strpos($module, 'yp/') !== false) {
$module = str_replace('/', DIRECTORY_SEPARATOR, $module);
$tplfile = $_tpl = PC_PATH.'templates'.DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.html';
} else {
$plugin = str_replace('plugin/', '', $module);
$module = str_replace('/', DIRECTORY_SEPARATOR, $module);
$tplfile = $_tpl = PC_PATH.'plugin'.DIRECTORY_SEPARATOR.$plugin.DIRECTORY_SEPARATOR.'templates'.DIRECTORY_SEPARATOR.$template.'.html';
}
if ($style != 'default' && !file_exists ( $tplfile )) {
$style = 'default';
$tplfile = PC_PATH.'templates'.DIRECTORY_SEPARATOR.'default'.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.'.html';
}
if (! file_exists ( $tplfile )) {
showmessage ( "templates".DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.".html is not exists!" );
}
$content = @file_get_contents ( $tplfile );

$filepath = CACHE_PATH.'caches_template'.DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR;
if(!is_dir($filepath)) {
mkdir($filepath, 0777, true);
}
$compiledtplfile = $filepath.$template.'.php';
$content = $this->template_parse($content);
$strlen = file_put_contents ( $compiledtplfile, $content );
chmod ( $compiledtplfile, 0777 );
return $strlen;
}

/**
* 更新模板缓存
*
* @param $tplfile 模板原文件路径
* @param $compiledtplfile 编译完成后，写入文件名
* @return $strlen 长度
*/
public function template_refresh($tplfile, $compiledtplfile) {
$str = @file_get_contents ($tplfile);
$str = $this->template_parse ($str);
$strlen = file_put_contents ($compiledtplfile, $str );
chmod ($compiledtplfile, 0777);
return $strlen;
}

/**
* 解析模板
*
* @param $str 模板内容
* @return ture
*/
public function template_parse($str) {
$str = preg_replace ( "/\{template\s+(.+)\}/", "<?php include template(\\1); ?>", $str );
$str = preg_replace ( "/\{include\s+(.+)\}/", "<?php include \\1; ?>", $str );
$str = preg_replace ( "/\{php\s+(.+)\}/", "<?php \\1?>", $str );
$str = preg_replace ( "/\{if\s+(.+?)\}/", "<?php if(\\1) { ?>", $str );
$str = preg_replace ( "/\{else\}/", "<?php } else { ?>", $str );
$str = preg_replace ( "/\{elseif\s+(.+?)\}/", "<?php } elseif (\\1) { ?>", $str );
$str = preg_replace ( "/\{\/if\}/", "<?php } ?>", $str );
//for 循环
$str = preg_replace("/\{for\s+(.+?)\}/","<?php for(\\1) { ?>",$str);
$str = preg_replace("/\{\/for\}/","<?php } ?>",$str);
//++ --
$str = preg_replace("/\{\+\+(.+?)\}/","<?php ++\\1; ?>",$str);
$str = preg_replace("/\{\-\-(.+?)\}/","<?php ++\\1; ?>",$str);
$str = preg_replace("/\{(.+?)\+\+\}/","<?php \\1++; ?>",$str);
$str = preg_replace("/\{(.+?)\-\-\}/","<?php \\1--; ?>",$str);
$str = preg_replace ( "/\{loop\s+(\S+)\s+(\S+)\}/", "<?php \$n=1;if(is_array(\\1)) foreach(\\1 AS \\2) { ?>", $str );
$str = preg_replace ( "/\{loop\s+(\S+)\s+(\S+)\s+(\S+)\}/", "<?php \$n=1; if(is_array(\\1)) foreach(\\1 AS \\2 => \\3) { ?>", $str );
$str = preg_replace ( "/\{\/loop\}/", "<?php \$n++;}unset(\$n); ?>", $str );
$str = preg_replace ( "/\{([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff:]*\(([^{}]*)\))\}/", "<?php echo \\1;?>", $str );
$str = preg_replace ( "/\{\\$([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff:]*\(([^{}]*)\))\}/", "<?php echo \\1;?>", $str );
$str = preg_replace ( "/\{(\\$[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)\}/", "<?php echo \\1;?>", $str );
$str = preg_replace("/\{(\\$[a-zA-Z0-9_\[\]\'\"\$\x7f-\xff]+)\}/es", "\$this->addquote('<?php echo \\1;?>')",$str);
$str = preg_replace ( "/\{([A-Z_\x7f-\xff][A-Z0-9_\x7f-\xff]*)\}/s", "<?php echo \\1;?>", $str );
$str = preg_replace("/\{pc:(\w+)\s+([^}]+)\}/ie", "self::pc_tag('$1','$2', '$0')", $str);
$str = preg_replace("/\{\/pc\}/ie", "self::end_pc_tag()", $str);
$str = "<?php defined('IN_PHPCMS') or exit('No permission resources.'); ?>" . $str;
return $str;
}

/**
* 转义 // 为 /
*
* @param $var 转义的字符
* @return 转义后的字符
*/
public function addquote($var) {
return str_replace ( "\\\"", "\"", preg_replace ( "/\[([a-zA-Z0-9_\-\.\x7f-\xff]+)\]/s", "['\\1']", $var ) );
}

/**
* 解析PC标签
* @param string $op 操作方式
* @param string $data 参数
* @param string $html 匹配到的所有的HTML代码
*/
public static function pc_tag($op, $data, $html) {
preg_match_all("/([a-z]+)\=[\"]?([^\"]+)[\"]?/i", stripslashes($data), $matches, PREG_SET_ORDER);
$arr = array('action','num','cache','page', 'pagesize', 'urlrule', 'return', 'start');
$tools = array('json', 'xml', 'block', 'get');
$datas = array();
$tag_id = md5(stripslashes($html));
//可视化条件
$str_datas = 'op='.$op.'&tag_md5='.$tag_id;
foreach ($matches as $v) {
$str_datas .= $str_datas ? "&$v[1]=".($op == 'block' && strpos($v[2], '$') === 0 ? $v[2] : urlencode($v[2])) : "$v[1]=".(strpos($v[2], '$') === 0 ? $v[2] : urlencode($v[2]));
if(in_array($v[1], $arr)) {
$$v[1] = $v[2];
continue;
}
$datas[$v[1]] = $v[2];
}
$str = '';
$num = isset($num) && intval($num) ? intval($num) : 20;
$cache = isset($cache) && intval($cache) ? intval($cache) : 0;
$return = isset($return) && trim($return) ? trim($return) : 'data';
if (!isset($urlrule)) $urlrule = '';
if (!empty($cache) && !isset($page)) {
$str .= '$tag_cache_name = md5(implode(\'&\','.self::arr_to_html($datas).').\''.$tag_id.'\');if(!$'.$return.' = tpl_cache($tag_cache_name,'.$cache.')){';
}
if (in_array($op,$tools)) {
switch ($op) {
case 'json':
if (isset($datas['url']) && !empty($datas['url'])) {
$str .= '$json = @file_get_contents(\''.$datas['url'].'\');';
$str .= '$'.$return.' = json_decode($json, true);';
}
break;

case 'xml':
$str .= '$xml = pc_base::load_sys_class(\'xml\');';
$str .= '$xml_data = @file_get_contents(\''.$datas['url'].'\');';
$str .= '$'.$return.' = $xml->xml_unserialize($xml_data);';
break;

case 'get':
$str .= 'pc_base::load_sys_class("get_model", "model", 0);';
if ($datas['dbsource']) {
$dbsource = getcache('dbsource', 'commons');
if (isset($dbsource[$datas['dbsource']])) {
$str .= '$get_db = new get_model('.var_export($dbsource,true).', \''.$datas['dbsource'].'\');';
} else {
return false;
}
} else {
$str .= '$get_db = new get_model();';
}
$num = isset($num) && intval($num) > 0 ? intval($num) : 20;
if (isset($start) && intval($start)) {
$limit = intval($start).','.$num;
} else {
$limit = $num;
}
if (isset($page)) {
$str .= '$pagesize = '.$num.';';
$str .= '$page = intval('.$page.') ? intval('.$page.') : 1;if($page<=0){$page=1;}';
$str .= '$offset = ($page - 1) * $pagesize;';
$limit = '$offset,$pagesize';
if ($sql = preg_replace('/select([^from].*)from/i', "SELECT COUNT(*) as count FROM ", $datas['sql'])) {
$str .= '$r = $get_db->sql_query("'.$sql.'");$s = $get_db->fetch_next();$pages=pages($s[\'count\'], $page, $pagesize, $urlrule);';
}
}


$str .= '$r = $get_db->sql_query("'.$datas['sql'].' LIMIT '.$limit.'");while(($s = $get_db->fetch_next()) != false) {$a[] = $s;}$'.$return.' = $a;unset($a);';
break;

case 'block':
$str .= '$block_tag = pc_base::load_app_class(\'block_tag\', \'block\');';
$str .= 'echo $block_tag->pc_tag('.self::arr_to_html($datas).');';
break;
}
} else {
if (!isset($action) || empty($action)) return false;
if (module_exists($op) && file_exists(PC_PATH.DIRECTORY_SEPARATOR.'modules'.DIRECTORY_SEPARATOR.$op.DIRECTORY_SEPARATOR.'classes'.DIRECTORY_SEPARATOR.$op.'_tag.class.php')) {
$str .= '$'.$op.'_tag = pc_base::load_app_class("'.$op.'_tag", "'.$op.'");if (method_exists($'.$op.'_tag, \''.$action.'\')) {';
if (isset($start) && intval($start)) {
$datas['limit'] = intval($start).','.$num;
} else {
$datas['limit'] = $num;
}
if (isset($page)) {
$str .= '$pagesize = '.$num.';';
$str .= '$page = intval('.$page.') ? intval('.$page.') : 1;if($page<=0){$page=1;}';
$str .= '$offset = ($page - 1) * $pagesize;';
$datas['limit'] = '$offset.",".$pagesize';
$datas['action'] = $action;
$str .= '$'.$op.'_total = $'.$op.'_tag->count('.self::arr_to_html($datas).');';
$str .= '$pages = pages($'.$op.'_total, $page, $pagesize, $urlrule);';
}
$str .= '$'.$return.' = $'.$op.'_tag->'.$action.'('.self::arr_to_html($datas).');';
$str .= '}';
}
}
if (!empty($cache) && !isset($page)) {
$str .= 'if(!empty($'.$return.')){setcache($tag_cache_name, $'.$return.', \'tpl_data\');}';
$str .= '}';
}
return "<"."?php if(defined('IN_ADMIN') && !defined('HTML')) {echo \"<div class=\\\"admin_piao\\\" pc_action=\\\"".$op."\\\" data=\\\"".$str_datas."\\\"><a href=\\\"javascript:void(0)\\\" class=\\\"admin_piao_edit\\\">".($op=='block' ? L('block_add') : L('edit'))."</a>\";}".$str."?".">";
}

/**
* PC标签结束
*/
static private function end_pc_tag() {
return '<?php if(defined(\'IN_ADMIN\') && !defined(\'HTML\')) {echo \'</div>\';}?>';
}

/**
* 转换数据为HTML代码
* @param array $data 数组
*/
private static function arr_to_html($data) {
if (is_array($data)) {
$str = 'array(';
foreach ($data as $key=>$val) {
if (is_array($val)) {
$str .= "'$key'=>".self::arr_to_html($val).",";
} else {
if (strpos($val, '$')===0) {
$str .= "'$key'=>$val,";
} else {
$str .= "'$key'=>'".new_addslashes($val)."',";
}
}
}
return $str.')';
}
return false;
}
}
?>