git.sesse.net Git - xml-template/blob - xml-template.php

   1 <?php
   2
   3 function XML_Template_process_file($filename, $obj, $clean = 1)
   4 {
   5         $doc = domxml_open_file($filename);
   6         XML_Template_process($doc, $obj, $clean);
   7         return $doc;
   8 }
   9
  10 function XML_Template_process($node, $obj, $clean = 1)
  11 {
  12         if (!is_array($obj)) {                                # overwrite
  13                 foreach ($node->child_nodes() as $child) {
  14                         $node->remove_child($child);
  15                 }
  16                 $doc = $node->owner_document();
  17                 $node->add_child($doc->create_text_node($obj));
  18         # handle overwrite with a DOM object here
  19         } else if (is_associative_array($obj)) {              # substitute
  20                 foreach ($node->child_nodes() as $child) {
  21                         $processed = false;
  22
  23                         if ($child->node_type() == XML_ELEMENT_NODE) {
  24                                 $tag = $child->node_name();
  25                                 $attrs = $child->attributes();
  26                                 if ($attrs != null) {
  27                                         foreach ($child->attributes() as $attr) {
  28                                                 if ($attr->namespace_uri() == 'http://template.sesse.net/' && $attr->name() == 'id') {
  29                                                         $id = $attr->value();
  30                                                         if ($clean) {
  31                                                                 $child->remove_attribute($attr->name());
  32                                                         }
  33                                                 }
  34                                         }
  35                                 }
  36
  37                                 # check all substitutions to see if we found anything
  38                                 # appropriate
  39                                 foreach (array_keys($obj) as $key) {
  40                                         # FIXME: we would want something like \Q and \E here...
  41                                         if (preg_match('/^' . $tag . '\.(.*)$/', $key, $matches) ||
  42                                             ($id != null && preg_match('/^#' . $id . '\.(.*)$/', $key, $matches))) {
  43                                                 $child->set_attribute($matches[1], $obj[$key]);
  44                                         }
  45
  46                                         if ($processed) {
  47                                                 continue;
  48                                         }
  49                                         if ($key == $tag || ($id != null && $key == ('#'.$id))) {
  50                                                 XML_Template_process($child, $obj[$key], $clean);
  51                                                 $processed = true;
  52                                         }
  53                                 }
  54                         }
  55
  56                         if (!$processed) {
  57                                 XML_Template_process($child, $obj, $clean);
  58                         }
  59                 }
  60         } else {                                                # repeat
  61                 $doc = $node->owner_document();
  62                 $frag = $doc->create_element("temporary-fragment");    # ugh
  63
  64                 foreach ($node->child_nodes() as $child) {
  65                         $frag->append_child($child);
  66                         $node->remove_child($child);
  67                 }
  68
  69                 foreach ($obj as $instance) {
  70                         $newnode = $frag->clone_node(true);
  71                         $node->append_child($newnode);
  72                         XML_Template_process($newnode, $instance, $clean);
  73                         if ($clean) {
  74                                 XML_Template_clean($newnode);
  75                         }
  76                 }
  77
  78                 # remove all the <fragment> tags
  79
  80                 foreach ($node->child_nodes() as $child) {
  81                         if ($child->name() != 'temporary-fragment') {
  82                                 continue;
  83                         }
  84                         foreach ($child->child_nodes() as $child2) {
  85                                 $node->append_child($child2);
  86                         }
  87                         $node->remove_child($child);
  88                 }
  89
  90                 return;
  91         }
  92
  93         if ($clean) {
  94                 XML_Template_clean($node);
  95         }
  96 }
  97
  98 function XML_Template_clean($node)
  99 {
 100         if ($node->node_type() == XML_ELEMENT_NODE) {
 101                 if ($node->namespace_uri() != 'http://template.sesse.net/') {
 102                         return;
 103                 }
 104
 105                 # as this is a dummy node, we want to remove it and move everything further up
 106                 # after we've done any required replacements
 107                 $doc = $node->owner_document();
 108                 $parent = $node->parent_node();
 109                 foreach ($node->child_nodes() as $child) {
 110                         $node->remove_child($child);
 111                         $node->insert_before($child, $node);
 112                 }
 113                 $parent->remove_child($node);
 114         }
 115 }
 116
 117 function is_associative_array($arr)
 118 {
 119         if (!is_array($arr)) {
 120                 return false;
 121         }
 122         $diff = array_diff(range(0, count($arr) - 1), array_keys($arr));
 123         return (count($diff) > 0);
 124 }
 125 ?>