Template engine of Discuz

Template engine of Discuz

The template engine of Discuz is a good template engine class. it was found on the Internet a long time ago. the template engine of Discuz should have been very old, and it was a version earlier than DZ7.2, I am also very comfortable with using this template class. There are two files. A template class, a template replacement function Address: http://blog.qita.in ? /** * Template class-use the Discuz template engine for parsing * Http://blog.qita.in */ Require_once (DIR_ROOT. '/../function/template. func. php '); Class Template { Const DIR_SEP = DIRECTORY_SEPARATOR; /** * Template instance * * @ Staticvar * @ Var object Template */ Protected static $ _ instance; /** * Template parameter information * * @ Var array */ Protected $ _ options = array (); /** * Single-piece mode call method * * @ Static * @ Return object Template */ Public static function getInstance (){ If (! Self: $ _ instance instanceof self) Self: $ _ instance = new self (); Return self: $ _ instance; } /** * Constructor * * @ Return void */ Private function _ construct (){ $ This-> _ options = array ('Template _ dir' => 'templates'. self: DIR_SEP, // Directory of the template file 'Cache _ dir' => 'templates'. self: DIR_SEP. 'cache'. self: DIR_SEP, // cache file storage directory 'Auto _ update' => false, // whether to regenerate the cache when the template file is changed 'Cache _ lifetime' => 0, // cache lifecycle (minutes), 0 indicates permanent ); } /** * Set template parameter information * * @ Param array $ options parameter array * @ Return void */ Public function setOptions (array $ options ){ Foreach ($ options as $ name => $ value) $ This-> set ($ name, $ value ); } /** * Set template parameters * * @ Param string $ name parameter name * @ Param mixed $ value parameter value * @ Return void */ Public function set ($ name, $ value ){ Switch ($ name ){ Case 'Template _ dir ': $ Value = $ this-> _ trimpath ($ value ); If (! File_exists ($ value )) $ This-> _ throwException ("The specified template directory \" $ value \ "" is not found \""); $ This-> _ options ['Template _ dir'] = $ value; Break; Case 'cache _ dir ': $ Value = $ this-> _ trimpath ($ value ); If (! File_exists ($ value )) $ This-> _ throwException ("The specified cache directory \" $ value \ "" is not found \""); $ This-> _ options ['cache _ dir'] = $ value; Break; Case 'auto _ update ': $ This-> _ options ['auto _ update'] = (boolean) $ value; Break; Case 'cache _ lifetime ': $ This-> _ options ['cache _ lifetime'] = (float) $ value; Break; Default: $ This-> _ throwException ("unknown template configuration options \" $ name \""); } } /** * Set template parameters by magic * * @ See Template: set () * @ Param string $ name parameter name * @ Param mixed $ value parameter value * @ Return void */ Public function _ set ($ name, $ value ){ $ This-> set ($ name, $ value ); } /** * Getting Template Files * * @ Param string $ file template file name * @ Return string */ Public function getfile ($ file ){ $ Cachefile = $ this-> _ getCacheFile ($ file ); If (! File_exists ($ cachefile )) $ This-> cache ($ file ); Return $ cachefile; } /** * Checks whether the template file needs to update the cache. * * @ Param string $ file template file name * @ Param string $ md5 verification information of the md5data template file * @ Param integer $ md5data template file expiration time verification information * @ Return void */ Public function check ($ file, $ md5data, $ expireTime ){ If ($ this-> _ options ['auto _ update'] & md5_file ($ this-> _ getTplFile ($ file ))! = $ Md5data) $ This-> cache ($ file ); If ($ this-> _ options ['cache _ lifetime']! = 0 & (time ()-$ expireTime >=$ this-> _ options ['cache _ lifetime'] * 60 )) $ This-> cache ($ file ); } /** * Cache template files * * @ Param string $ file template file name * @ Return void */ Public function cache ($ file ){ $ Tplfile = $ this-> _ getTplFile ($ file ); If (! Is_readable ($ tplfile )){ $ This-> _ throwException ("template file \" $ tplfile \ "not found or cannot be opened "); } // Obtain the template content $ Template = file_get_contents ($ tplfile ); // Filter $ Template = preg_replace ("/\ <\! \-\ {(. + ?) \}\-\>/S "," {\\ 1} ", $ template ); // Replace language pack variables // $ Template = preg_replace ("// \ {lang \ s + (. + ?) \}/Ies "," your agevar ('\ 1') ", $ template ); // Replace the PHP line break $ Template = str_replace ("{LF }"," ", $ Template ); // Replace the direct variable output $ VarRegexp = "(\ $ [a-zA-Z _ \ x7f-\ xff] [a-zA-Z0-9 _ \ x7f-\ xff] *)" . "(\ [A-zA-Z0-9 _ \-\. \" \ '\ [\] \ $ \ x7f-\ xff] + \]) *) "; $ Template = preg_replace ("/\ {(\ $[a-zA-Z0-9 _ \ [\] \ '\" \ $ \. \ x7f-\ xff] +) \}/s "," ", $ Template ); $ Template = preg_replace ("/$ varRegexp/es", "addquote (' ') ", $ Template ); $ Template = preg_replace ("/\ <\? \=\< \? \=$ VarRegexp \? \> \? \>/Es "," addquote (' ') ", $ Template ); // Replace the template load command $ Template = preg_replace ("/[\ n \ r \ t] * \ {template \ s + ([a-z0-9 _] +) \} [\ n \ r \ t] */is ", "\ R \ n Getfile ('\ 1');?> \ R \ n ", $ Template ); $ Template = preg_replace ("/[\ n \ r \ t] * \ {template \ s + (. + ?) \} [\ N \ r \ t] */is ", "\ R \ n Getfile (\ 1);?> \ R \ n ", $ Template ); // Replace a specific function $ Template = preg_replace ("/[\ n \ r \ t] * \ {eval \ s + (. + ?) \} [\ N \ r \ t] */ies ", "Stripvtags (' ','')", $ Template ); $ Template = preg_replace ("/[\ n \ r \ t] * \ {echo \ s + (. + ?) \} [\ N \ r \ t] */ies ", "Stripvtags (' ','')", $ Template ); $ Template = preg_replace ("/([\ n \ r \ t] *) \ {elseif \ s + (. + ?) \} ([\ N \ r \ t] *)/ies ", "Stripvtags ('\ 1 \ 3 ','')", $ Template ); $ Template = preg_replace ("/([\ n \ r \ t] *) \ {else \} ([\ n \ r \ t] *)/is ", "\ 1 \ 2 ", $ Template ); // Replace the cyclic function and condition judgment statement $ Nest = 5; For ($ I = 0; $ I <$ nest; $ I ++ ){ $ Template = preg_replace ("/[\ n \ r \ t] * \ {loop \ s + (\ S +) \} [\ n \ r] * (. + ?) [\ N \ r] * \ {\/loop \} [\ n \ r \ t] */ies ", "Stripvtags (' ',' \ 3 ')", $ Template ); $ Template = preg_replace ("/[\ n \ r \ t] * \ {loop \ s + (\ S +) \ s + (\ S +) \} [\ n \ r \ t] * (. + ?) [\ N \ r \ t] * \ {\/loop \} [\ n \ r \ t] */ies ", "Stripvtags (' \ 3) {?> ',' \ 4 ')", $ Template ); $ Template = preg_replace ("/([\ n \ r \ t] *) \ {if \ s + (. + ?) \} ([\ N \ r] *) (. + ?) ([\ N \ r] *) \ {\/if \} ([\ n \ r \ t] *)/ies ", "Stripvtags ('\ 1 \ 3', '\ 4 \ 5 \ 6 ')", $ Template ); } // Constant replacement $ Template = preg_replace ("/\ {([a-zA-Z _ \ x7f-\ xff] [a-zA-Z0-9 _ \ x7f-\ xff] *) \}/s ", " ", $ Template ); // Delete unnecessary spaces and line breaks in PHP code. $ Template = preg_replace ("/\? \> [\ N \ r] * \ <\? /S "," ", $ template ); // Other replacement $ Template = preg_replace ("/\" (http )? [\ W \. \/:] + \? [^ \ "] +? & [^ \ "] +? \ "/E ", "Transamp ('\ 0 ')", $ Template ); $ Template = preg_replace ("/\ ] *? Src = \ "(. + ?) \".*? \> \ S * \ <\/script \>/ise ", "Stripscriptamp ('\ 1 ')", $ Template ); $ Template = preg_replace ("/[\ n \ r \ t] * \ {block \ s + ([a-zA-Z0-9 _] +) \} (. + ?) \ {\/Block \}/ies ", "Stripblock ('\ 1',' \ 2 ')", $ Template ); // Add md5 and expiration verification $ Md5data = md5_file ($ tplfile ); $ ExpireTime = time (); $ Template =" . "\ $ Template-> getInstance ()-> check ('$ file',' $ md5data ', $ expireTime );" . "?> \ R \ n $ template "; // Write the cached file $ Cachefile = $ this-> _ getCacheFile ($ file ); $ Makepath = $ this-> _ makepath ($ cachefile ); If ($ makepath! = True) $ This-> _ throwException ("the cache directory \" $ makepath \ "" cannot be created \""); File_put_contents ($ cachefile, $ template ); } /** * Correct the path to the appropriate operating system format * * @ Param string $ path name * @ Return string */ Protected function _ trimpath ($ path ){ Return str_replace (array ('/', '\', '//', '\'), self: DIR_SEP, $ path ); } /** * Get the template file name and path * * @ Param string $ file template file name * @ Return string */ Protected function _ getTplFile ($ file ){ Return $ this-> _ trimpath ($ this-> _ options ['Template _ dir']. self: DIR_SEP. $ file ); } /** * Get the template cache file name and path * * @ Param string $ file template file name * @ Return string */ Protected function _ getCacheFile ($ file ){ $ File = preg_replace ('/\. [a-z0-9 \-_] + $/I', '. cache. php', $ file ); Return $ this-> _ trimpath ($ this-> _ options ['cache _ dir']. self: DIR_SEP. $ file ); } /** * Create a non-existent folder based on the specified path * * @ Param string $ path/folder name * @ Return string */ Protected function _ makepath ($ path ){ $ Dirs = explode (self: DIR_SEP, dirname ($ this-> _ trimpath ($ path ))); $ Tmp = ''; Foreach ($ dirs as $ dir ){ $ Tmp. = $ dir. self: DIR_SEP; If (! File_exists ($ tmp )&&! @ Mkdir ($ tmp, 0777 )) Return $ tmp; } Return true; } /** * Throw an error message. * * @ Param string $ message * @ Return void */ Protected function _ throwException ($ message ){ Throw new Exception ($ message ); } } ?> Template function file /** * Functions required for template replacement * Http://blog.qita.in */ Function transamp ($ template ){ $ Template = str_replace ('&', '&', $ template ); $ Template = str_replace ('& amp;', '&', $ template ); $ Template = str_replace ('\ "', '"', $ template ); Return $ template; } Function stripvtags ($ expr, $ statement ){ $ Expr = str_replace ("\\\" "," \ "", preg_replace ("/\< \? \= (\\\$. + ?) \? \>/S "," \ 1 ", $ expr )); $ Statement = str_replace ("\\\" "," \ "", $ statement ); Return $ expr. $ statement; } Function addquote ($ var ){ Return str_replace ("\" "," \ "", preg_replace ("/\ [([a-zA-Z0-9 _\-\. \ x7f-\ xff] +) \]/s "," ['\ 1'] ", $ var )); } Function stripscriptamp ($ s ){ $ S = str_replace ('&', '&', $ s ); Return"