From 477914e29b713dddb65ee09d9957c1bb231210b7 Mon Sep 17 00:00:00 2001 From: Kevin Chabowski Date: Sat, 17 Sep 2011 22:30:05 +0200 Subject: Finished first untested version of STE, now we will debug this thing... --- transform.php | 686 +++++++++++++++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 632 insertions(+), 54 deletions(-) (limited to 'transform.php') diff --git a/transform.php b/transform.php index 21f0068..5f87f70 100644 --- a/transform.php +++ b/transform.php @@ -1,5 +1,7 @@ vars[' . (is_numeric($this->name) ? $this->name : '\'' . escape_text($this->name) . '\''). ']'; + foreach($this->arrayfields as $af) + { + if((count($af) == 1) and ($af[0] instanceof TextNode) and is_numeric($af->text)) + $varaccess .= '[' . $af->text . ']'; + else + $varaccess .= '[' . implode(".", + array_map( + function($node) + { + if($node instanceof TextNode) + return "'" . escape_text($node->text) . "'"; + else if($node instanceof VariableNode) + return $node->transcompile; + }, $af + ) + ). ']'; + } + return $varaccess; + } } /* $text must start after the first opening bracket */ @@ -201,69 +225,73 @@ function parse($code) } define("MODE_SOURCE", 0); -define("MODE_AST", 1); -define("MODE_TRANSCOMPILED", 2); +define("MODE_TRANSCOMPILED", 1); -/*interface StorageAccess +interface StorageAccess { - abstract public function get_load_options(); - abstract public function get_save_options(); - - abstract public function load($tpl); - abstract public function save($tpl, $data, $mode); + public function load($tpl, &$mode); + public function save($tpl, $data, $mode); } class FilesystemStorageAccess implements StorageAccess { protected $sourcedir; - protected $astdir; protected $transcompileddir; - protected $load_options; - protected $save_options; - - public function __construct($src, $ast, $transc) + public function __construct($src, $transc) { $this->sourcedir = $src; - $this->astdir = $ast; $this->transcompileddir = $transc; + } + + public function load($tpl, &$mode) + { + $src_fn = $this->sourcedir . "/" . $tpl; + $transc_fn = $this->transcompileddir . "/" . $tpl; - if(!empty($this->sourcedir)) + if($mode == MODE_SOURCE) { - if(is_readable($this->sourcedir)) - $this->load_options[] = MODE_SOURCE; - if(is_writeableable($this->sourcedir)) - $this->save_options[] = MODE_SOURCE; + $content = @file_get_contents($src_fn); + if($content === False) + throw new Exception("Template not found."); + return $content; } - if(!empty($this->astdir)) + $src_stat = @stat($src_fn); + $transc_stat = @stat($transc_fn); + + if(($src_stat === False) and ($transc_stat === False)) + throw new Exception("Template not found."); + else if($transc_stat === False) { - if(is_readable($this->astdir)) - $this->load_options[] = MODE_AST; - if(is_writeableable($this->astdir)) - $this->save_options[] = MODE_AST; + $mode = MODE_SOURCE; + return file_get_contents($src_fn); } - - if(!empty($this->transcompileddir)) + else if($src_stat === False) { - if(is_readable($this->transcompileddir)) - $this->load_options[] = MODE_TRANSCOMPILED; - if(is_writeableable($this->transcompileddir)) - $this->save_options[] = MODE_TRANSCOMPILED; + include($transc_fn); + return $transcompile_fx; + } + else + { + if($src_stat["mtime"] > $transc_stat["mtime"]) + { + $mode = MODE_SOURCE; + return file_get_contents($src_fn); + } + else + { + include($transc_fn); + return $transcompile_fx; + } } - - if(empty($this->save_options) and empty($this->load_options)) - throw new Exception("No dir read-/writeable!"); } - public function get_load_options() { return $this->load_options; } - public function get_save_options() { return $this->save_options; } - - public function load($tpl) + public function save($tpl, $data, $mode) { - if(@stat($this->sourcedir) + file_put_contents((($mode == MODE_SOURCE) ? $this->sourcedir : $this->transcompileddir) . "/" . $tpl, $data); } -}*/ +} function indent_code($code) { @@ -280,8 +308,134 @@ function indent_code($code) function shunting_yard($infix_math) { $operators = array( - "+" => array() + "+" => array("l", 2), + "-" => array("l", 2), + "*" => array("l", 3), + "/" => array("l", 3), + "^" => array("r", 4), + "_" => array("r", 5), + "(" => array("", 0), + ")" => array("", 0) ); + + preg_match_all("/\s*(?:(?:[+\\-\\*\\/\\^\\(\\)])|(\\d*[\\.]?\\d*))\\s*/s", $infix_math, $tokens, PREG_PATTERN_ORDER); + $tokens_raw = array_filter(array_map('trim', $tokens[0]), function($x) { return !empty($x); }); + + $output_queue = array(); + $op_stack = array(); + + $lastpriority = NULL; + /* Make - unary, if neccessary */ + $tokens = array(); + foreach($tokens_raw as $token) + { + $priority = isset($operators[$token]) ? $operators[$token][1] : -1; + if(($token == "-") and (($lastpriority === NULL) or ($lastpriority >= 0))) + { + $priority = $operators["_"][1]; + $tokens[] = "_"; + } + else + $tokens[] = $token; + $lastpriority = $priority; + } + + while(!empty($tokens)) + { + $token = array_shift($tokens); + if(is_numeric($token)) + $output_queue[] = $token; + else if($token == "(") + $op_stack[] = $token; + else if($token == ")") + { + $lbr_found = False; + while(!empty($op_stack)) + { + $op = array_pop($op_stack); + if($op == "(") + { + $lbr_found = True; + break; + } + $output_queue[] = $op; + } + if(!$lbr_found) + throw new Exception("Bracket mismatch."); + } + else if(!isset($operators[$token])) + throw new Exception("Invalid token ($token): Not a number, bracket or operator. Stop."); + else + { + $priority = $operators[$token][1]; + if($operators[$token][0] == "l") + while((!empty($op_stack)) and ($priority <= $operators[$op_stack[count($op_stack)-1]][1])) + $output_queue[] = array_pop($op_stack); + else + while((!empty($op_stack)) and ($priority < $operators[$op_stack[count($op_stack)-1]][1])) + $output_queue[] = array_pop($op_stack); + $op_stack[] = $token; + } + } + + while(!empty($op_stack)) + { + $op = array_pop($op_stack); + if($op == "(") + throw new Exception("Bracket mismatch..."); + $output_queue[] = $op; + } + + return $output_queue; +} + +function pop2(&$array) +{ + $rv = array(array_pop($array), array_pop($array)); + if(array_search(NULL, $rv, True) === False) + throw new Exception("Not enough numbers on stack. Invalid formula."); + return $rv; +} + +function calc_rpn($rpn) +{ + $stack = array(); + foreach($rpn as $token) + { + switch($token) + { + case "+": + list($b, $a) = pop2($stack); + $stack[] = $a + $b; + break; + case "-": + list($b, $a) = pop2($stack); + $stack[] = $a - $b; + break; + case "*": + list($b, $a) = pop2($stack); + $stack[] = $a * $b; + break; + case "/": + list($b, $a) = pop2($stack); + $stack[] = $a / $b; + break; + case "^": + list($b, $a) = pop2($stack); + $stack[] = pow($a, $b); + break; + case "_": + $a = array_pop($stack); + if($a === NULL) + throw new Exception("Not enough numbers on stack. Invalid formula."); + $stack[] = -$a; + break; + default: + $stack[] = $token; + break; + } + } + return array_pop($stack); } $ste_builtins = array( @@ -305,7 +459,8 @@ $ste_builtins = array( if(empty($then)) throw new Exception("Transcompile error: Missing in . Stop."); - $output .= transcompile($condition); + $output .= "\$outputstack[] = \"\";\n\$outputstack_i++;\n"; + $output .= _transcompile($condition); $output .= "\$outputstack_i--;\nif(\$ste->bool(array_pop(\$outputstack)))\n{\n"; $output .= indent_code(transcompile($then)); $output .= "}\n"; @@ -319,65 +474,488 @@ $ste_builtins = array( }, "cmp" => function($ast) { + $code = ""; + $code .= "\$outputstack[] = '';\n\$outputstack_i++;\n"; + if(isset($ast->params["var_b"])) + { + $code .= _transcompile($ast->params["var_b"]); + $b = '$ste->get_var_by_name(array_pop($outputstack))'; + } + else if(isset($ast->params["text_b"])) + { + $code .= _transcompile($ast->params["text_b"]); + $b = 'array_pop($outputstack)'; + } + else + throw new Exception("Transcompile error: neiter var_b nor text_b set in . Stop."); + + $code .= "\$outputstack[] = '';\n\$outputstack_i++;\n"; + if(isset($ast->params["var_a"])) + { + $code .= _transcompile($ast->params["var_a"]); + $a = '$ste->get_var_by_name(array_pop($outputstack))'; + } + else if(isset($ast->params["text_a"])) + { + $code .= _transcompile($ast->params["text_a"]); + $a = 'array_pop($outputstack)'; + } + else + throw new Exception("Transcompile error: neiter var_a nor text_a set in . Stop."); + + $code .= "\$outputstack[] = '';\n\$outputstack_i++;\n"; + if(isset($ast->params["op"])) + $code .= _transcompile($ast->params["op"]); + else + throw new Exception("Transcompile error: op not given in . Stop."); + + $code .= "\$outputstack_i -= 3;\nswitch(trim(array_pop(\$outputstack)))\n{\n\t"; + $code .= implode("", array_map( + function($op) use ($a,$b) + { + list($op_stetpl, $op_php) = $op; + return "case '$op_stetpl':\n\t\$outputstack[\$outputstack_i] .= (($a) $op_php ($b)) ? 'yes' : '';\n\tbreak;\n\t"; + }, + array( + array('eq', '=='), + array('neq', '!='), + array('lt', '<'), + array('lte', '<='), + array('gt', '>'), + array('gte', '>=') + ) + )); + $code .= "default: throw new Exception('Runtime Error: Unknown operator in .');\n}\n"; + return $code; }, "not" => function($ast) { - + $code = "\$outputstack[] = '';\n\$outputstack_i++;\n"; + $code .= _transcompile($ast->sub); + $code .= "\$outputstack_i--;\n\$outputstack[\$outputstack_i] .= (!\$ste->bool(array_pop(\$outputstack))) ? 'yes' : '';\n"; + return $code; }, "even" => function($ast) { - + $code = "\$outputstack[] = '';\n\$outputstack_i++;\n"; + $code .= _transcompile($ast->sub); + $code .= "\$outputstack_i--;\$tmp_even = array_pop(\$outputstack);\n\$outputstack[] .= (is_numeric(\$tmp_even) and (\$tmp_even % 2 == 0)) ? 'yes' : '';\n"; }, "for" => function($ast) { + $code = ""; + $loopname = "forloop_" . str_replace(".", "_", uniqid("",True)); if(empty($ast->params["start"])) throw new Exception("Transcompile error: Missing 'start' parameter in . Stop."); + $code .= "\$outputstack[] = '';\n\$outputstack_i++;\n"; + $code .= _transcompile($ast->params["start"]); + $code .= "\$outputstack_i--;\n\$${loopname}_start = array_pop(\$outputstack);\n"; + if(empty($ast->params["end"])) throw new Exception("Transcompile error: Missing 'end' parameter in . Stop."); + $code .= "\$outputstack[] = '';\n\$outputstack_i++;\n"; + $code .= _transcompile($ast->params["end"]); + $code .= "\$outputstack_i--;\n\$${loopname}_end = array_pop(\$outputstack);\n"; + + if(empty($ast->params["step"])) + $code .= "\$${loopname}_step = 1;\n"; + else + { + $code .= "\$outputstack[] = '';\n\$outputstack_i++;\n"; + $code .= _transcompile($ast->params["step"]); + $code .= "\$outputstack_i--;\n\$${loopname}_step = array_pop(\$outputstack);\n"; + } + if(!empty($ast->params["counter"])) + { + $code .= "\$outputstack[] = '';\n\$outputstack_i++;\n"; + $code .= _transcompile($ast->params["counter"]); + $code .= "\$outputstack_i--;\n\$${loopname}_countername = array_pop(\$outputstack);\n"; + } + + $loopbody = empty($ast->params["counter"]) ? "\$ste->set_var_by_name(\$${loopname}_countername, \$${loopname}_counter);\n\n" : ""; + $loopbody .= _transcompile($ast->sub); + $loopbody = indent_code("{\n" . indent_code($loopbody) . "}\n"); + + $code .= "if(\$${loopname}_step == 0)\n\tthrow new Exception('Runtime Error: step can not be 0 in . Stop.');\n"; + $code .= "if(\$${loopname}_step > 0)\n{\n"; + $code .= "\tfor(\$${loopname}_counter = \$${loopname}_start; \$${loopname}_start <= \$${loopname}_end; \$${loopname}_start += \$${loopname}_step)\n"; + $code .= $loopbody; + $code .= "\n}\nelse\n{\n"; + $code .= "\tfor(\$${loopname}_counter = \$${loopname}_start; \$${loopname}_start >= \$${loopname}_end; \$${loopname}_start += \$${loopname}_step)\n"; + $code .= $loopbody; + $code .= "\n}\n"; + + return $code; }, "foreach" => function($ast) { - + $loopname = "foreachloop_" . str_replace(".", "_", uniqid("",True)); + $code = ""; + + if(empty($ast->params["array"])) + throw new Exception("Transcompile Error: array not givein in . Stop."); + $code .= "\$outputstack[] = '';\n\$outputstack_i++;\n"; + $code .= _transcompile($ast->params["array"]); + $code .= "\$outputstack_i--;\n\$${loopname}_arrayvar = array_pop(\$outputstack);\n"; + + if(empty($ast->params["value"])) + throw new Exception("Transcompile Error: value not givein in . Stop."); + $code .= "\$outputstack[] = '';\n\$outputstack_i++;\n"; + $code .= _transcompile($ast->params["value"]); + $code .= "\$outputstack_i--;\n\$${loopname}_valuevar = array_pop(\$outputstack);\n"; + + if(!empty($ast->params["key"])) + { + $code .= "\$outputstack[] = '';\n\$outputstack_i++;\n"; + $code .= _transcompile($ast->params["key"]); + $code .= "\$outputstack_i--;\n\$${loopname}_keyvar = array_pop(\$outputstack);\n"; + } + + if(!empty($ast->params["counter"])) + { + $code .= "\$outputstack[] = '';\n\$outputstack_i++;\n"; + $code .= _transcompile($ast->params["counter"]); + $code .= "\$outputstack_i--;\n\$${loopname}_countervar = array_pop(\$outputstack);\n"; + } + + $code .= "\$${loopname}_array = \$ste->get_var_by_name(\$${loopname}_arrayvar);\n"; + $code .= "\$${loopname}_counter = 0;\n"; + + $loopbody = "\$${loopname}_counter++;\n\$ste->set_var_by_name(\$${loopname}_valuevar, \$${loopname}_value);\n"; + if(!empty($ast->params["key"])) + $loopbody .= "\$ste->set_var_by_name(\$${loopname}_keyvar, \$${loopname}_key);\n"; + if(!empty($ast->params["counter"])) + $loopbody .= "\$ste->set_var_by_name(\$${loopname}_countervar, \$${loopname}_counter);\n"; + $loopbody .= "\n"; + $loopbody .= _transcompile($ast->sub); + $loopbody = "{\n" . indent_code($loopbody) . "}\n"; + + $code .= "foreach(\$${loopname}_array as \$${loopname}_key => \$${loopname}_value)\n$loopbody\n"; + + return $code; }, "infloop" => function($ast) { - + return "while(True)\n{\n" . indent_code(_transcompile($ast->sub)) . "}\n"; }, "break" => function($ast) { return "break;\n"; - } + }, "continue" => function($ast) { - return "continue\n"; - } + return "continue;\n"; + }, "block" => function($ast) { - + if(empty($ast->name)) + throw new Exception("Transcompile Error: name missing in . Stop."); + + $blknamevar = "blockname_" . str_replace(".", "_", uniqid("", True)); + + $code = "\$outputstack[] = '';\n\$outputstack_i++;\n"; + $code .= _transcompile($ast->name); + $code .= "\$outputstack_i--;\n\$${blknamevar} = array_pop(\$outputstack);\n"; + + $tmpblk = uniqid("", True); + $code .= "\$ste->blocks['$tmpblk'] = array_pop(\$outputstack);\n\$ste->blockorder[] = '$tmpblk';\n\$outputstack = array('');\n\$outputstack_i = 0;\n"; + + $code .= _transcompile($ast->sub); + + $code .= "\$ste->blocks[\$${blknamevar}] = array_pop(\$outputstack);\n"; + $code .= "if(array_search(\$${blknamevar}, \$ste->blockorder) === FALSE)\n\t\$ste->blockorder[] = '$tmpblk';\n\$outputstack = array('');\n\$outputstack_i = 0;\n"; + + return $code; }, "load" => function($ast) { - + if(empty($ast->params["name"])) + throw new Exception("Transcompile Error: name missing in . Stop."); + + $code = "\$outputstack[] = '';\n\$outputstack_i++;\n"; + $code .= _transcompile($ast->params["name"]); + $code .= "\$outputstack_i--;\n\$outputstack[\$outputstack_i] .= \$ste->load(array_pop(\$outputstack));\n"; + + return $code; }, "mktag" => function($ast) { - + if(empty($ast->params["name"])) + throw new Exception("Transcompile Error: name missing in . Stop."); + + $code = "\$outputstack[] = '';\n\$outputstack_i++;\n"; + $code .= _transcompile($ast->params["name"]); + $code .= "\$outputstack_i--;\n\$tagname = array_pop(\$outputstack);\n"; + + $fxbody = "\$outputstack = array(); \$outputstack_i = 0;\$ste->vars['_tag_parameters'] = \$params;\n"; + + if(!empty($ast->params["mandatory"])) + { + $code .= "\$outputstack[] = '';\n\$outputstack_i++;\n"; + $code .= _transcompile($ast->params["mandatory"]); + $code .= "\$outputstack_i--;\n\$mandatory_params = explode('|', array_pop(\$outputstack));\n"; + + $fxbody .= "foreach(\$mandatory_params as \$mp)\n{\n\tif(!isset(\$params[\$mp]))\n\t\tthrow new Exception(\"Runtime Error: \$mp missing in . Stop.\");\n}"; + } + + $fxbody .= _transcompile($ast->sub); + $fxbody .= "return array_pop(\$outputstack);"; + + $code .= "\$tag_fx = function(\$ste, \$params, \$sub) use (\$tagname, \$mandatory_params)\n{\n" . indent_code($fxbody) . "\n}\n"; + $code .= "\$ste->register_tag(\$tagname, \$tag_fx);"; + + return $code; + }, + "tagcontent" => function($ast) + { + return "\$outputstack[\$outputstack_i] .= \$sub(\$ste);"; }, "set" => function($ast) { - + if(empty($ast->params["var"])) + throw new Exception("Transcompile Error: var missing in . Stop."); + + $code = "\$outputstack[] = '';\n\$outputstack_i++;\n"; + $code .= _transcompile($ast->params["var"]); + + $code -= "\$outputstack[] = '';\n\$outputstack_i++;\n"; + $code .= _transcompile($ast->sub); + + $code .= "\$outputstack_i -= 2;\n\$newvartext = array_pop(\$outputstack);\n\$varname = array_pop(\$outputstack);\n"; + $code .= "\$ste->set_var_by_name(\$varname, \$newvartext);\n"; + + return $code; }, "calc" => function($ast) { - + $code = "\$outputstack[] = '';\n\$outputstack_i++;\n"; + $code .= _transcompile($ast->sub); + $code .= "\$outputstack_i--;\n\$outputstack[\$outputstack_i] .= \$ste->calc(array_pop(\$outputstack));\n"; + + return $code; } ); -function transcompile($ast) +function escape_text($text) +{ + return addcslashes($text, "\0.\x1f\r\n\t\\'\x7f..\xff"); +} + +function _transcompile($ast) /* The real transcompile function, does not add boilerplate code. */ { + $code = ""; + global $ste_builtins; + foreach($ast as $node) + { + if($node instanceof TextNode) + $code .= "\$outputstack[\$outputstack_i] .= '" . escape_text($node->text) . "';\n"; + else if($node instanceof VariableNode) + $code .= "\$outputstack[\$outputstack_i] .= " . $node->transcompile() . ";\n"; + else if($node instanceof TagNode) + { + if(isset($ste_builtins[$node->name])) + $code .= $ste_builtins[$node->name]($node); + else + { + $paramarray = "parameters_" . str_replace(".", "_", uniqid("", True)); + $code .= "\$$paramarray = array();\n"; + + foreach($node->params as $pname => $pcontent) + { + $code .= "\$outputstack[] = '';\n\$outputstack_i++;\n"; + $code .= _transcompile($pcontent); + $code .= "\$outputstack_i--;\n\$${paramarray}['" . escape_text($pname) . "'] = array_pop(\$outputstack);\n"; + } + + $code .= "\$outputstack[\$outputstack_i] .= \$ste->call_tag('" . escape_text($node->name) . "', \$${paramarray}, " . transcompile($node->sub) . ");"; + } + } + } + + return $code; +} + +$ste_transc_boilerplate = "\$outputstack = array('');\n\$outputstack_i = 0;\n"; + +function transcompile($ast) /* Transcompile and add some boilerplate code. */ +{ + return "function(\$ste)\n{\n" . indent_code($ste_transc_boilerplate . _transcompile($ast) . "return array_pop(\$outputstack);") . "\n}"; +} + +class STECore +{ + private $tags; + private $storage_access; + private $cur_tpl_dir; + public $blocks; + public $blockorder; + public $vars; + + public function __construct($storage_access) + { + $this->storage_access = $storage_access; + $this->cur_tpl_dir = "/"; + STEStandardLibrary->_register_lib($this); + $this->vars = array(); + } + + public function register_tag($name, $callback) + { + if(!is_callable($callback)) + throw new Exception("Can not register tag \"$name\", not callable."); + if(empty($name)) + throw new Exception("Can not register tag, empty name."); + $this->tags[$name] = $callback; + } + + public function call_tag($name, $params, $sub) + { + if(!isset($this->tags[$name])) + throw new Exception("Can not call tag \"$name\": Does not exist."); + return $this->tags[$name]($this, $params, $sub); + } + + public function calc($expression) + { + return calc_rpn(shunting_yard($expression)); + } + + public function exectemplate($tpl) + { + $output = ""; + $lastblock = $this->load($tpl); + + foreach($this->blockorder as $blockname) + $output .= $this->blocks[$blockname]; + + return $output . $lastblock; + } + + private function get_var_reference(&$from, $name, $create_if_not_exist) + { + $bracket_open = strpos($name, "["); + if($bracket_open === False) + { + if(isset($from[$name]) or $create_if_not_exist) + return &$from[$name]; + else + return NULL; + } + else + { + $old_varname = $varname; + $bracket_close = strpos($name, "]", $bracket_open); + if($bracket_close === FALSE) + throw new Excpeption("Runtime Error: Invalid varname \"$varname\". Missing closing \"]\"."); + $varname = substr($name, 0, $bracket_open); + $name = substr($name, $bracket_open + 1, $bracket_close - $bracket_open - 1) . substr($name, $bracket_close + 1); + if(!is_array($from[$varname])) + { + if($create_if_not_exist) + $from[$varname] = array(); + else + return NULL; + } + try + { + return $self->get_var_reference($from[$varname], $name, $create_if_not_exist); + } + catch(Exception $e) + { + throw new Excpeption("Runtime Error: Invalid varname \"$old_varname\". Missing closing \"]\"."); + } + } + } + + public function set_var_by_name($name, $val) + { + $ref = $this->get_var_reference($this->vars, $name, True); + $ref = (string) $val; + } + + public function get_var_by_name($name) + { + $ref = $this->get_var_reference($this->vars, $name, False); + return $ref === NULL ? "" : (string) $ref; + } + + public function load($tpl, $quiet=False) + { + $tpldir_b4 = $this->cur_tpl_dir; + + /* Resolve ".", ".." and protect from possible LFI */ + $tpl = str_replace("\\", "/", $tpl); + if($tpl[0] != "/") + $tpl = $this->cur_tpl_dir . "/" . $tpl; + $pathex = array_filter(array_slice(explode("/", $tpl), 1), function($s) { return $s != "."; }); + while(($i = array_search("..", $pathex)) !== False) + { + if($i == 0) + $pathex = array_slice($pathex, 1); + else + $pathex = array_merge(array_slice($pathex, 0, $i), array_slice($pathex, $i + 2)); + } + $tpl = implode("/", $pathex); + + if($quiet) + { + $blocks_back = clone $this->blocks; + $blockorder_back = clone $this->blockorder; + } + + $mode = MODE_TRANSCOMPILED; + $content = $this->storage_access->load($tpl, $mode); + if($mode == MODE_SOURCE) + { + $ast = parse($content); + $transc = transcompile($ast); + $this->storage_access->save($tpl, $transc, MODE_TRANSCOMPILED); + eval("\$content = $transc;"); + } + + $output = $content($ste); + + $this->cur_tpl_dir = $tpldir_b4; + + if($quiet) + { + $this->blocks = $blocks_back; + $this->blockorder = $blockorder_back; + } + else + return $output; + } +} + +class STEStandardLibrary +{ + static public function _register_lib($ste) + { + foreach(get_class_methods(__CLASS__) as $method) + if($method[0] != "_") + $ste->register_tag($method, array(__CLASS__, $method)); + } + + static public function escape($ste, $params, $sub) + { + return htmlentities($sub($ste), ENT_QUOTES, "UTF-8"); + } + + static public function strlen($ste, $params, $sub) + { + return strlen($sub($ste)); + } + + static public function array_len($ste, $params, $sub) + { + if(empty($params["var"])) + throw new Exception("Runtime Error: missing var parameter in ."); + $a = $ste->get_var_by_name($params["var"]); + return (is_array($a)) ? count($a) : ""; + } } ?> -- cgit v1.2.3-70-g09d2