- a lib for php4 that is good substitute for simplexml

diff --git a/lib/phpxml/xml.php b/lib/phpxml/xml.php
new file mode 100644 (file)
index 0000000..7726285
--- /dev/null
+++ b/lib/phpxml/xml.php
@@ -0,0 +1,117 @@
+<?php
+###################################################################################
+#
+# XML Library, by Keith Devens, version 1.2b
+# http://keithdevens.com/software/phpxml
+#
+# This code is Open Source, released under terms similar to the Artistic License.
+# Read the license at http://keithdevens.com/software/license
+#
+###################################################################################
+
+###################################################################################
+# XML_unserialize: takes raw XML as a parameter (a string)
+# and returns an equivalent PHP data structure
+###################################################################################
+function & XML_unserialize(&$xml){
+       $xml_parser = &new XML();
+       $data = &$xml_parser->parse($xml);
+       $xml_parser->destruct();
+       return $data;
+}
+###################################################################################
+# XML_serialize: serializes any PHP data structure into XML
+# Takes one parameter: the data to serialize. Must be an array.
+###################################################################################
+function & XML_serialize(&$data, $level = 0, $prior_key = NULL){
+       if($level == 0){ ob_start(); echo '<?xml version="1.0" ?>',"\n"; }
+       while(list($key, $value) = each($data))
+               if(!strpos($key, ' attr')) #if it's not an attribute
+                       #we don't treat attributes by themselves, so for an empty element
+                       # that has attributes you still need to set the element to NULL
+
+                       if(is_array($value) and array_key_exists(0, $value)){
+                               XML_serialize($value, $level, $key);
+                       }else{
+                               $tag = $prior_key ? $prior_key : $key;
+                               echo str_repeat("\t", $level),'<',$tag;
+                               if(array_key_exists("$key attr", $data)){ #if there's an attribute for this element
+                                       while(list($attr_name, $attr_value) = each($data["$key attr"]))
+                                               echo ' ',$attr_name,'="',htmlspecialchars($attr_value),'"';
+                                       reset($data["$key attr"]);
+                               }
+
+                               if(is_null($value)) echo " />\n";
+                               elseif(!is_array($value)) echo '>',htmlspecialchars($value),"</$tag>\n";
+                               else echo ">\n",XML_serialize($value, $level+1),str_repeat("\t", $level),"</$tag>\n";
+                       }
+       reset($data);
+       if($level == 0){ $str = &ob_get_contents(); ob_end_clean(); return $str; }
+}
+###################################################################################
+# XML class: utility class to be used with PHP's XML handling functions
+###################################################################################
+class XML{
+       var $parser;   #a reference to the XML parser
+       var $document; #the entire XML structure built up so far
+       var $parent;   #a pointer to the current parent - the parent will be an array
+       var $stack;    #a stack of the most recent parent at each nesting level
+       var $last_opened_tag; #keeps track of the last tag opened.
+
+       function XML(){
+               $this->parser = &xml_parser_create();
+               xml_parser_set_option(&$this->parser, XML_OPTION_CASE_FOLDING, false);
+               xml_set_object(&$this->parser, &$this);
+               xml_set_element_handler(&$this->parser, 'open','close');
+               xml_set_character_data_handler(&$this->parser, 'data');
+       }
+       function destruct(){ xml_parser_free(&$this->parser); }
+       function & parse(&$data){
+               $this->document = array();
+               $this->stack    = array();
+               $this->parent   = &$this->document;
+               return xml_parse(&$this->parser, &$data, true) ? $this->document : NULL;
+       }
+       function open(&$parser, $tag, $attributes){
+               $this->data = ''; #stores temporary cdata
+               $this->last_opened_tag = $tag;
+               if(is_array($this->parent) and array_key_exists($tag,$this->parent)){ #if you've seen this tag before
+                       if(is_array($this->parent[$tag]) and array_key_exists(0,$this->parent[$tag])){ #if the keys are numeric
+                               #this is the third or later instance of $tag we've come across
+                               $key = count_numeric_items($this->parent[$tag]);
+                       }else{
+                               #this is the second instance of $tag that we've seen. shift around
+                               if(array_key_exists("$tag attr",$this->parent)){
+                                       $arr = array('0 attr'=>&$this->parent["$tag attr"], &$this->parent[$tag]);
+                                       unset($this->parent["$tag attr"]);
+                               }else{
+                                       $arr = array(&$this->parent[$tag]);
+                               }
+                               $this->parent[$tag] = &$arr;
+                               $key = 1;
+                       }
+                       $this->parent = &$this->parent[$tag];
+               }else{
+                       $key = $tag;
+               }
+               if($attributes) $this->parent["$key attr"] = $attributes;
+               $this->parent  = &$this->parent[$key];
+               $this->stack[] = &$this->parent;
+       }
+       function data(&$parser, $data){
+               if($this->last_opened_tag != NULL) #you don't need to store whitespace in between tags
+                       $this->data .= $data;
+       }
+       function close(&$parser, $tag){
+               if($this->last_opened_tag == $tag){
+                       $this->parent = $this->data;
+                       $this->last_opened_tag = NULL;
+               }
+               array_pop($this->stack);
+               if($this->stack) $this->parent = &$this->stack[count($this->stack)-1];
+       }
+}
+function count_numeric_items(&$array){
+       return is_array($array) ? count(array_filter(array_keys($array), 'is_numeric')) : 0;
+}
+?>
\ No newline at end of file