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-rwxr-xr-xZotlabs/Render/SimpleTemplate.php310
1 files changed, 310 insertions, 0 deletions
diff --git a/Zotlabs/Render/SimpleTemplate.php b/Zotlabs/Render/SimpleTemplate.php
new file mode 100755
index 000000000..ff1bb5c3c
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+++ b/Zotlabs/Render/SimpleTemplate.php
@@ -0,0 +1,310 @@
+<?php
+
+namespace Zotlabs\Render;
+
+define ("KEY_NOT_EXISTS", '^R_key_not_Exists^');
+
+class SimpleTemplate implements TemplateEngine {
+
+ static $name ="internal";
+
+ var $r;
+ var $search;
+ var $replace;
+ var $stack = array();
+ var $nodes = array();
+ var $done = false;
+ var $d = false;
+ var $lang = null;
+ var $debug=false;
+
+ private function _preg_error() {
+ switch(preg_last_error()) {
+ case PREG_INTERNAL_ERROR: echo('PREG_INTERNAL_ERROR'); break;
+ case PREG_BACKTRACK_LIMIT_ERROR: echo('PREG_BACKTRACK_LIMIT_ERROR'); break;
+ case PREG_RECURSION_LIMIT_ERROR: echo('PREG_RECURSION_LIMIT_ERROR'); break;
+ case PREG_BAD_UTF8_ERROR: echo('PREG_BAD_UTF8_ERROR'); break;
+// This is only valid for php > 5.3, not certain how to code around it for unit tests
+// case PREG_BAD_UTF8_OFFSET_ERROR: echo('PREG_BAD_UTF8_OFFSET_ERROR'); break;
+ default:
+ //die("Unknown preg error.");
+ return;
+ }
+ echo "<hr><pre>";
+ debug_print_backtrace();
+ die();
+ }
+
+ private function _push_stack() {
+ $this->stack[] = array($this->r, $this->nodes);
+ }
+
+ private function _pop_stack(){
+ list($this->r, $this->nodes) = array_pop($this->stack);
+ }
+
+ private function _get_var($name, $retNoKey=false) {
+ $keys = array_map('trim',explode(".",$name));
+ if ($retNoKey && !array_key_exists($keys[0], $this->r))
+ return KEY_NOT_EXISTS;
+
+ $val = $this->r;
+ foreach($keys as $k) {
+ $val = (isset($val[$k]) ? $val[$k] : null);
+ }
+
+ return template_escape($val);
+ }
+
+ /**
+ * IF node
+ * \code
+ * {{ if <$var> }}...[{{ else }} ...] {{ endif }}
+ * {{ if <$var>==<val|$var> }}...[{{ else }} ...]{{ endif }}
+ * {{ if <$var>!=<val|$var> }}...[{{ else }} ...]{{ endif }}
+ * \endcode
+ */
+ private function _replcb_if($args) {
+ if (strpos($args[2],"==")>0){
+ list($a,$b) = array_map("trim",explode("==",$args[2]));
+ $a = $this->_get_var($a);
+ if ($b[0]=="$") $b = $this->_get_var($b);
+ $val = ($a == $b);
+ } else if (strpos($args[2],"!=")>0){
+ list($a,$b) = array_map("trim", explode("!=",$args[2]));
+ $a = $this->_get_var($a);
+ if ($b[0]=="$") $b = $this->_get_var($b);
+ $val = ($a != $b);
+ } else {
+ $val = $this->_get_var($args[2]);
+ }
+ $x = preg_split("|{{ *else *}}|", $args[3]);
+
+ return ( ($val) ? $x[0] : (isset($x[1]) ? $x[1] : ""));
+ }
+
+ /**
+ * FOR node
+ * \code
+ * {{ for <$var> as $name }}...{{ endfor }}
+ * {{ for <$var> as $key=>$name }}...{{ endfor }}
+ * \endcode
+ */
+ private function _replcb_for($args) {
+ $m = array_map('trim', explode(" as ", $args[2]));
+ $x = explode("=>",$m[1]);
+ if (count($x) == 1) {
+ $varname = $x[0];
+ $keyname = "";
+ } else {
+ list($keyname, $varname) = $x;
+ }
+ if ($m[0]=="" || $varname=="" || is_null($varname)) die("template error: 'for ".$m[0]." as ".$varname."'") ;
+ //$vals = $this->r[$m[0]];
+ $vals = $this->_get_var($m[0]);
+ $ret="";
+ if (!is_array($vals)) return $ret;
+
+ foreach ($vals as $k=>$v){
+ $this->_push_stack();
+ $r = $this->r;
+ $r[$varname] = $v;
+ if ($keyname!='') $r[$keyname] = (($k === 0) ? '0' : $k);
+ $ret .= $this->replace($args[3], $r);
+ $this->_pop_stack();
+ }
+
+ return $ret;
+ }
+
+ /**
+ * INC node
+ * \code
+ * {{ inc <templatefile> [with $var1=$var2] }}{{ endinc }}
+ * \endcode
+ */
+ private function _replcb_inc($args) {
+ if (strpos($args[2],"with")) {
+ list($tplfile, $newctx) = array_map('trim', explode("with",$args[2]));
+ } else {
+ $tplfile = trim($args[2]);
+ $newctx = null;
+ }
+
+ if ($tplfile[0]=="$") $tplfile = $this->_get_var($tplfile);
+
+ $this->_push_stack();
+ $r = $this->r;
+ if (!is_null($newctx)) {
+ list($a,$b) = array_map('trim', explode("=",$newctx));
+ $r[$a] = $this->_get_var($b);
+ }
+ $this->nodes = Array();
+ $tpl = get_markup_template($tplfile);
+ $ret = $this->replace($tpl, $r);
+ $this->_pop_stack();
+
+ return $ret;
+ }
+
+ /**
+ * DEBUG node
+ * \code
+ * {{ debug $var [$var [$var [...]]] }}{{ enddebug }}
+ * \endcode
+ * replace node with <pre>var_dump($var, $var, ...);</pre>
+ */
+ private function _replcb_debug($args) {
+ $vars = array_map('trim', explode(" ",$args[2]));
+ $vars[] = $args[1];
+
+ $ret = "<pre>";
+ foreach ($vars as $var){
+ $ret .= htmlspecialchars(var_export( $this->_get_var($var), true ));
+ $ret .= "\n";
+ }
+ $ret .= "</pre>";
+
+ return $ret;
+ }
+
+ private function _replcb_node($m) {
+ $node = $this->nodes[$m[1]];
+ if (method_exists($this, "_replcb_".$node[1])){
+ $s = call_user_func(array($this, "_replcb_".$node[1]), $node);
+ } else {
+ $s = "";
+ }
+ $s = preg_replace_callback('/\|\|([0-9]+)\|\|/', array($this, "_replcb_node"), $s);
+
+ return $s;
+ }
+
+ private function _replcb($m) {
+ //var_dump(array_map('htmlspecialchars', $m));
+ $this->done = false;
+ $this->nodes[] = (array) $m;
+
+ return "||". (count($this->nodes)-1) ."||";
+ }
+
+ private function _build_nodes($s) {
+ $this->done = false;
+ while (!$this->done) {
+ $this->done=true;
+ $s = preg_replace_callback('|{{ *([a-z]*) *([^}]*)}}([^{]*({{ *else *}}[^{]*)?){{ *end\1 *}}|', array($this, "_replcb"), $s);
+ if ($s==Null) $this->_preg_error();
+ }
+ //({{ *else *}}[^{]*)?
+ krsort($this->nodes);
+
+ return $s;
+ }
+
+ private function var_replace($s) {
+ $m = array();
+ /** regexp:
+ * \$ literal $
+ * (\[)? optional open square bracket
+ * ([a-zA-Z0-9-_]+\.?)+ var name, followed by optional
+ * dot, repeated at least 1 time
+ * (?(1)\]) if there was opened square bracket
+ * (subgrup 1), match close bracket
+ */
+ if (preg_match_all('/\$(\[)?([a-zA-Z0-9-_]+\.?)+(?(1)\])/', $s,$m)) {
+ foreach ($m[0] as $var) {
+ $exp = str_replace(array("[", "]"), array("", ""), $var);
+ $exptks = explode("|", $exp);
+
+ $varn = $exptks[0];
+ unset($exptks[0]);
+ $val = $this->_get_var($varn, true);
+ if ($val != KEY_NOT_EXISTS) {
+ /* run filters */
+ /*
+ * Filter are in form of:
+ * filtername:arg:arg:arg
+ *
+ * "filtername" is function name
+ * "arg"s are optional, var value is appended to the end
+ * if one "arg"==='x' , is replaced with var value
+ *
+ * examples:
+ * $item.body|htmlspecialchars // escape html chars
+ * $item.body|htmlspecialchars|strtoupper // escape html and uppercase result
+ * $item.created|date:%Y %M %j // format date (created is a timestamp)
+ * $item.body|str_replace:cat:dog // replace all "cat" with "dog"
+ * $item.body|str_replace:cat:dog:x:1 // replace one "cat" with "dog"
+ */
+ foreach ($exptks as $filterstr) {
+ $filter = explode(":", $filterstr);
+ $filtername = $filter[0];
+ unset($filter[0]);
+ $valkey = array_search("x", $filter);
+ if ($valkey === false) {
+ $filter[] = $val;
+ } else {
+ $filter[$valkey] = $val;
+ }
+ if (function_exists($filtername)) {
+ $val = call_user_func_array($filtername, $filter);
+ }
+ }
+ $s = str_replace($var, $val, $s);
+ }
+ }
+ }
+
+ return $s;
+ }
+
+ private function replace($s, $r) {
+ $this->replace_macros($s, $r);
+ }
+
+ // TemplateEngine interface
+
+ public function replace_macros($s, $r) {
+ $this->r = $r;
+
+ $s = $this->_build_nodes($s);
+
+ $s = preg_replace_callback('/\|\|([0-9]+)\|\|/', array($this, "_replcb_node"), $s);
+ if ($s == Null)
+ $this->_preg_error();
+
+ // remove comments block
+ $s = preg_replace('/{#[^#]*#}/', "" , $s);
+
+ //$t2 = dba_timer();
+
+ // replace strings recursively (limit to 10 loops)
+ $os = "";
+ $count=0;
+ while (($os !== $s) && $count<10) {
+ $os=$s;
+ $count++;
+ $s = $this->var_replace($s);
+ }
+
+ return $s;
+ }
+
+ public function get_markup_template($file, $root='') {
+ $template_file = theme_include($file, $root);
+ if ($template_file) {
+ $content = file_get_contents($template_file);
+ }
+
+ return $content;
+ }
+}
+
+
+function template_escape($s) {
+ return str_replace(array('$','{{'),array('!_Doll^Ars1Az_!','!_DoubLe^BraceS4Rw_!'),$s);
+}
+
+function template_unescape($s) {
+ return str_replace(array('!_Doll^Ars1Az_!','!_DoubLe^BraceS4Rw_!'),array('$','{{'),$s);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-01 06:28:37 +0000