+function tem_auto_evenodd(&$values) {
+ $even = true;
+ if($values) foreach($values as &$value) {
+ $value['evenodd'] = $even ? 'even' : 'odd';
+ $even = !$even;
+ }
+ return $values;
+}
+
+
+
+
+
+# Backward Compatibility
+# ----------------------
+
+function is_shown($piece) {
+ return $piece['args'][0] == 'hide';
+}
+
+function is_shown_sub_template($piece) {
+ return is_sub_template($piece) and is_shown($piece);
+}
+
+# Old-style templates don't show unless explicitly requested.
+function tem_auto_hide(&$value, $key, $context) {
+ unset($context['data'][$key]);
+ return false;
+}
+
+# The old API is being used with the named sub-template,
+# so hide it and insert a value slot for its expansion(s).
+function &tem_is_old_sub($name, &$template) {
+ foreach($template['pieces'] as $key => &$piece) {
+ if(is_sub_template($piece)) {
+ if($piece['name'] == $name) {
+ if(!is_shown($piece)) {
+ # hide template unless explicitly show()n.
+ $piece['args'] = array('hide');
+ # insert a value slot with the same name (for the expansion).
+ $var = array('name' => $name, 'args' => array());
+ array_splice($template['pieces'], $key, 0, array($var));
+ }
+ return $piece;
+ }
+ $tem = tem_is_old_sub($name, $piece);
+ if($tem) return $tem;
+ }
+ }
+ return false;
+}
+
+class tem {
+ var $template;
+ var $data;
+
+ function tem() {
+ $this->template = array('pieces' => array());
+ $this->data = array();
+ }
+
+ function set($key, $value = true) {
+ $this->data[$key] = $value;
+ }
+
+ function sets($hash) {
+ foreach($hash as $key => $value) {
+ $this->set($key, $value);
+ }
+ }
+
+ function append($key, $value) {
+ $this->data[$key] .= $value;
+ }
+
+ function prepend($key, $value) {
+ $this->data[$key] = $value . $this->data[$key];
+ }
+
+ function clear($key) {
+ unset($this->data[$key]);
+ }
+
+ function get($key) {
+ return $this->data[$key];
+ }
+
+ function show($name) {
+ $tem = tem_is_old_sub($name, $this->template);
+ if($tem) {
+ $this->data[$name] .= fill_template($tem, $this->data);
+ }
+ }
+
+ function show_separated($name) {
+ if($this->get($name)) {
+ $this->show($name . '_sep');
+ }
+ $this->show($name);
+ }
+
+ function load_str($str) {
+ $this->template =& parse_template($str);
+ }
+
+ function load($filename) {
+ $this->template =& parse_template_file($filename);
+ }
+
+ function run($tem = false) {
+ if($tem) {
+ if(strlen($tem < 150 && file_exists($tem))) $this->load($tem);
+ else $this->load_str($tem);
+ }
+
+ return fill_template($this->template, $this->data);
+ }
+
+ function output($tem = false) {
+ print($this->run($tem));
+ }
+
+ # merge top-level sub-templates of $tem (object) into $this,
+ # supporting both new and old semantics.
+ function merge($tem) {
+ # append expansions to $this->data (old style)
+
+ $subs = $tem->top_subs('is_shown_sub_template');
+ if($subs) foreach($subs as $name => $val) {
+ $this->append($name, $val);
+ unset($tem->data[$name]); # so array_merge() won't overwrite things
+ }
+
+ # merge the data arrays and template trees (new style)
+ $this->data = array_merge($this->data, $tem->data);
+ merge_templates($this->template, $tem->template);
+ }
+
+ # see merge() above
+ function merge_file($filename) {
+ $other_tem = new tem();
+ $other_tem->load($filename);
+ $this->merge($other_tem);
+ }
+
+ function top_sub_names($is_sub = 'is_sub_template') {
+ return array_keys(top_sub_templates($this->template, $is_sub));
+ }
+
+ function top_subs($is_sub = 'is_sub_template') {
+ $ret = array();
+ $names = $this->top_sub_names($is_sub);
+ foreach($names as $name) {
+ $ret[$name] = $this->get($name);
+ }
+ return $ret;
+ }
+
+ # old name for show (deprecated)
+ function sub($name) {
+ $this->show($name);
+ }
+}