Merge pull request #543 from fabrixxm/master
template_processor: add filter support to variables
This commit is contained in:
friendica
commit
ca16302111
1 changed files with 265 additions and 220 deletions
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@ -1,7 +1,9 @@
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<?php
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define ("KEY_NOT_EXISTS", '^R_key_not_Exists^');
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class Template {
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define("KEY_NOT_EXISTS", '^R_key_not_Exists^');
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class Template {
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var $r;
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var $search;
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var $replace;
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@ -10,15 +12,19 @@
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var $done = false;
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var $d = false;
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var $lang = null;
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var $debug=false;
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var $debug = false;
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private function _preg_error(){
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private function _preg_error() {
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switch(preg_last_error()){
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case PREG_INTERNAL_ERROR: echo('PREG_INTERNAL_ERROR'); break;
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case PREG_BACKTRACK_LIMIT_ERROR: echo('PREG_BACKTRACK_LIMIT_ERROR'); break;
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case PREG_RECURSION_LIMIT_ERROR: echo('PREG_RECURSION_LIMIT_ERROR'); break;
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case PREG_BAD_UTF8_ERROR: echo('PREG_BAD_UTF8_ERROR'); break;
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switch (preg_last_error()) {
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case PREG_INTERNAL_ERROR: echo('PREG_INTERNAL_ERROR');
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break;
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case PREG_BACKTRACK_LIMIT_ERROR: echo('PREG_BACKTRACK_LIMIT_ERROR');
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break;
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case PREG_RECURSION_LIMIT_ERROR: echo('PREG_RECURSION_LIMIT_ERROR');
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break;
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case PREG_BAD_UTF8_ERROR: echo('PREG_BAD_UTF8_ERROR');
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break;
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// This is only valid for php > 5.3, not certain how to code around it for unit tests
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// case PREG_BAD_UTF8_OFFSET_ERROR: echo('PREG_BAD_UTF8_OFFSET_ERROR'); break;
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default:
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@ -30,20 +36,20 @@
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die();
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}
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private function _push_stack(){
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private function _push_stack() {
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$this->stack[] = array($this->r, $this->nodes);
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}
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private function _pop_stack(){
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list($this->r, $this->nodes) = array_pop($this->stack);
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private function _pop_stack() {
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list($this->r, $this->nodes) = array_pop($this->stack);
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}
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private function _get_var($name, $retNoKey=false){
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$keys = array_map('trim',explode(".",$name));
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if ($retNoKey && !array_key_exists($keys[0], $this->r)) return KEY_NOT_EXISTS;
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private function _get_var($name, $retNoKey = false) {
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$keys = array_map('trim', explode(".", $name));
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if ($retNoKey && !array_key_exists($keys[0], $this->r))
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return KEY_NOT_EXISTS;
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$val = $this->r;
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foreach($keys as $k) {
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foreach ($keys as $k) {
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$val = (isset($val[$k]) ? $val[$k] : null);
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}
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return $val;
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@ -56,16 +62,18 @@
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* {{ if <$var>==<val|$var> }}...[{{ else }} ...]{{ endif }}
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* {{ if <$var>!=<val|$var> }}...[{{ else }} ...]{{ endif }}
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*/
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private function _replcb_if($args){
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if (strpos($args[2],"==")>0){
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list($a,$b) = array_map("trim",explode("==",$args[2]));
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private function _replcb_if($args) {
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if (strpos($args[2], "==") > 0) {
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list($a, $b) = array_map("trim", explode("==", $args[2]));
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$a = $this->_get_var($a);
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if ($b[0]=="$") $b = $this->_get_var($b);
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if ($b[0] == "$")
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$b = $this->_get_var($b);
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$val = ($a == $b);
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} else if (strpos($args[2],"!=")>0){
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list($a,$b) = array_map("trim", explode("!=",$args[2]));
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} else if (strpos($args[2], "!=") > 0) {
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list($a, $b) = array_map("trim", explode("!=", $args[2]));
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$a = $this->_get_var($a);
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if ($b[0]=="$") $b = $this->_get_var($b);
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if ($b[0] == "$")
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$b = $this->_get_var($b);
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$val = ($a != $b);
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} else {
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$val = $this->_get_var($args[2]);
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@ -80,25 +88,28 @@
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* {{ for <$var> as $name }}...{{ endfor }}
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* {{ for <$var> as $key=>$name }}...{{ endfor }}
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*/
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private function _replcb_for($args){
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private function _replcb_for($args) {
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$m = array_map('trim', explode(" as ", $args[2]));
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$x = explode("=>",$m[1]);
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$x = explode("=>", $m[1]);
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if (count($x) == 1) {
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$varname = $x[0];
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$keyname = "";
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} else {
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list($keyname, $varname) = $x;
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}
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if ($m[0]=="" || $varname=="" || is_null($varname)) die("template error: 'for ".$m[0]." as ".$varname."'") ;
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if ($m[0] == "" || $varname == "" || is_null($varname))
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die("template error: 'for " . $m[0] . " as " . $varname . "'");
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//$vals = $this->r[$m[0]];
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$vals = $this->_get_var($m[0]);
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$ret="";
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if (!is_array($vals)) return $ret;
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foreach ($vals as $k=>$v){
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$ret = "";
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if (!is_array($vals))
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return $ret;
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foreach ($vals as $k => $v) {
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$this->_push_stack();
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$r = $this->r;
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$r[$varname] = $v;
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if ($keyname!='') $r[$keyname] = (($k === 0) ? '0' : $k);
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if ($keyname != '')
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$r[$keyname] = (($k === 0) ? '0' : $k);
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$ret .= $this->replace($args[3], $r);
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$this->_pop_stack();
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}
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@ -110,20 +121,21 @@
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*
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* {{ inc <templatefile> [with $var1=$var2] }}{{ endinc }}
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*/
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private function _replcb_inc($args){
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if (strpos($args[2],"with")) {
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list($tplfile, $newctx) = array_map('trim', explode("with",$args[2]));
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private function _replcb_inc($args) {
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if (strpos($args[2], "with")) {
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list($tplfile, $newctx) = array_map('trim', explode("with", $args[2]));
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} else {
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$tplfile = trim($args[2]);
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$newctx = null;
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}
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if ($tplfile[0]=="$") $tplfile = $this->_get_var($tplfile);
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if ($tplfile[0] == "$")
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$tplfile = $this->_get_var($tplfile);
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$this->_push_stack();
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$r = $this->r;
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if (!is_null($newctx)) {
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list($a,$b) = array_map('trim', explode("=",$newctx));
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list($a, $b) = array_map('trim', explode("=", $newctx));
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$r[$a] = $this->_get_var($b);
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}
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$this->nodes = Array();
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@ -131,7 +143,6 @@
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$ret = $this->replace($tpl, $r);
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$this->_pop_stack();
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return $ret;
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}
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/**
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@ -141,13 +152,13 @@
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*
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* replace node with <pre>var_dump($var, $var, ...);</pre>
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*/
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private function _replcb_debug($args){
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$vars = array_map('trim', explode(" ",$args[2]));
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private function _replcb_debug($args) {
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$vars = array_map('trim', explode(" ", $args[2]));
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$vars[] = $args[1];
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$ret = "<pre>";
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foreach ($vars as $var){
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$ret .= htmlspecialchars(var_export( $this->_get_var($var), true ));
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foreach ($vars as $var) {
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$ret .= htmlspecialchars(var_export($this->_get_var($var), true));
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$ret .= "\n";
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}
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$ret .= "</pre>";
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@ -156,8 +167,8 @@
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private function _replcb_node($m) {
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$node = $this->nodes[$m[1]];
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if (method_exists($this, "_replcb_".$node[1])){
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$s = call_user_func(array($this, "_replcb_".$node[1]), $node);
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if (method_exists($this, "_replcb_" . $node[1])) {
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$s = call_user_func(array($this, "_replcb_" . $node[1]), $node);
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} else {
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$s = "";
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}
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@ -165,45 +176,82 @@
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return $s;
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}
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private function _replcb($m){
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private function _replcb($m) {
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//var_dump(array_map('htmlspecialchars', $m));
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$this->done = false;
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$this->nodes[] = (array) $m;
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return "||". (count($this->nodes)-1) ."||";
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return "||" . (count($this->nodes) - 1) . "||";
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}
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private function _build_nodes($s){
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private function _build_nodes($s) {
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$this->done = false;
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while (!$this->done){
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$this->done=true;
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while (!$this->done) {
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$this->done = true;
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$s = preg_replace_callback('|{{ *([a-z]*) *([^}]*)}}([^{]*({{ *else *}}[^{]*)?){{ *end\1 *}}|', array($this, "_replcb"), $s);
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if ($s==Null) $this->_preg_error();
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if ($s == Null)
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$this->_preg_error();
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}
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//({{ *else *}}[^{]*)?
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krsort($this->nodes);
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return $s;
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}
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private function var_replace($s){
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private function var_replace($s) {
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$m = array();
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/** regexp:
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* \$ literal $
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* (\[)? optional open square bracket
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* ([a-zA-Z0-9-_]+\.?)+ var name, followed by optional
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* dot, repeated at least 1 time
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* (|[a-zA-Z0-9-_:]+)* pipe followed by filter name and args, zero or many
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* (?(1)\]) if there was opened square bracket
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* (subgrup 1), match close bracket
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*/
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if (preg_match_all('/\$(\[)?([a-zA-Z0-9-_]+\.?)+(?(1)\])/', $s,$m)){
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if (preg_match_all('/\$(\[)?([a-zA-Z0-9-_]+\.?)+(\|[a-zA-Z0-9-_:]+)*(?(1)\])/', $s, $m)) {
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foreach ($m[0] as $var) {
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foreach($m[0] as $var){
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$varn = str_replace(array("[","]"), array("",""), $var);
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$exp = str_replace(array("[", "]"), array("", ""), $var);
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$exptks = explode("|", $exp);
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$varn = $exptks[0];
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unset($exptks[0]);
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$val = $this->_get_var($varn, true);
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if ($val!=KEY_NOT_EXISTS)
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if ($val != KEY_NOT_EXISTS) {
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/* run filters */
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/*
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* Filter are in form of:
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* filtername:arg:arg:arg
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*
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* "filtername" is function name
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* "arg"s are optional, var value is appended to the end
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* if one "arg"==='x' , is replaced with var value
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*
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* examples:
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* $item.body|htmlspecialchars // escape html chars
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* $item.body|htmlspecialchars|strtoupper // escape html and uppercase result
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* $item.created|date:%Y %M %j // format date (created is a timestamp)
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* $item.body|str_replace:cat:dog // replace all "cat" with "dog"
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* $item.body|str_replace:cat:dog:x:1 // replace one "cat" with "dog"
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*/
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foreach ($exptks as $filterstr) {
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$filter = explode(":", $filterstr);
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$filtername = $filter[0];
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unset($filter[0]);
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$valkey = array_search("x", $filter);
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if ($valkey === false) {
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$filter[] = $val;
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} else {
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$filter[$valkey] = $val;
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}
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if (function_exists($filtername)) {
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$val = call_user_func_array($filtername, $filter);
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}
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}
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$s = str_replace($var, $val, $s);
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}
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}
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}
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return $s;
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}
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@ -214,37 +262,34 @@
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$s = $this->_build_nodes($s);
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$s = preg_replace_callback('/\|\|([0-9]+)\|\|/', array($this, "_replcb_node"), $s);
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if ($s==Null) $this->_preg_error();
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if ($s == Null)
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$this->_preg_error();
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// remove comments block
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$s = preg_replace('/{#[^#]*#}/', "" , $s);
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$s = preg_replace('/{#[^#]*#}/', "", $s);
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// replace strings recursively (limit to 10 loops)
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$os = ""; $count=0;
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while($os!=$s && $count<10){
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$os=$s; $count++;
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$os = "";
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$count = 0;
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while ($os != $s && $count < 10) {
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$os = $s;
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$count++;
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$s = $this->var_replace($s);
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}
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return $s;
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}
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}
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$t = new Template;
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}
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$t = new Template;
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function template_escape($s) {
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return str_replace(array('$','{{'),array('!_Doll^Ars1Az_!','!_DoubLe^BraceS4Rw_!'),$s);
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return str_replace(array('$', '{{'), array('!_Doll^Ars1Az_!', '!_DoubLe^BraceS4Rw_!'), $s);
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}
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function template_unescape($s) {
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return str_replace(array('!_Doll^Ars1Az_!','!_DoubLe^BraceS4Rw_!'),array('$','{{'),$s);
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return str_replace(array('!_Doll^Ars1Az_!', '!_DoubLe^BraceS4Rw_!'), array('$', '{{'), $s);
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}
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