X-Git-Url: https://jasonwoof.com/gitweb/?a=blobdiff_plain;f=template.php;h=a20fd64b775964f4ee78e1165961d3ce335f5873;hb=7b6c6ac8d6c1f53b85491ee455f2402da1d149ba;hp=c48d700047727eb988f18dba9e11fe724e8797b7;hpb=5130cc014131a3285c6614e06cfb5ad8098addf8;p=wfpl.git
diff --git a/template.php b/template.php
index c48d700..a20fd64 100644
--- a/template.php
+++ b/template.php
@@ -53,19 +53,18 @@ function template_file($filename, $data) {
return fill_template(parse_template_file($filename), $data);
}
-function parse_template_file($filename) {
+function &parse_template_file($filename) {
return parse_template(file_get_contents($filename));
}
-# We parse the template string into a tree of strings and sub-templates.
+# We parse the template string into a tree of strings and sub-templates.
# A template is a hash with a name string, a pieces array, and possibly
# an args array.
-function parse_template($string) {
+function &parse_template($string) {
$tem =& tem_push();
$tem['pieces'] = array();
- # note: for some reason this captures ''.
- $matches = preg_split("/()/", $string, -1, PREG_SPLIT_DELIM_CAPTURE);
+ $matches = preg_split('/()/', preg_replace('//', '$1', $string), -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
foreach($matches as $match) {
if($match == '~~') $match = '~';
if(substr($match,0,1) == '~' and strlen($match) > 2) {
@@ -85,13 +84,13 @@ function parse_template($string) {
array_pop($args); # drop '}'
$cur = $tem['name'];
if($name && $name != $cur) {
- die("Invalid template: tried to close '$name', but '$cur' is current.");
+ die("Invalid template: tried to close '$name', but '$cur' is current.");
}
$tem =& $tem['parent'];
} else { # value slot
$tem['pieces'][] = array('name' => $name, 'args' => $args);
}
- } elseif($match and $match != '
-#
+#
+#
# row content...
-#
-#
-#
+#
+#
+#
#
-function tem_auto_sep($key, $context) {
- $rows =& $context['parent']['rows'];
- if(key($rows)) return true;
- # else we are on the last row (cursor has hit the end and reset).
+function tem_auto_sep(&$value, $key, $context) {
+ $rows =& $context['parent']['parent'];
+ if($rows['cur'] != count($rows['rows'])-1) # last row?
+ return true; # show once
+}
+
+# auto-show once, only when this is the first row of the parent
+function tem_auto_last(&$value, $key, $context) {
+ $rows =& $context['parent']['parent'];
+ if($rows['cur'] == count($rows['rows'])-1) # last row?
+ return true; # show once
}
-# 'show' sections will be shown unless the corresponding data value
-# is false. We check only for false; 0 or '' will not work.
+# auto-show once, only when this is the last row of the parent
+function tem_auto_first(&$value, $key, $context) {
+ $rows =& $context['parent']['parent'];
+ if($rows['cur'] == 0) # first row?
+ return true; # show once
+}
+
+# 'show' sections will be shown unless the corresponding data
+# value === false
+function tem_auto_show(&$value) {
+ if($value === null) return true;
+ return $value;
+}
-function tem_auto_show($key, $context) {
- if($context['data'][$key] !== false)
- return tem_data_as_rows(true);
+# 'empty' sections will be shown only if the corresponding data value is the
+# empty string
+function tem_auto_empty(&$value) {
+ if($value === '') return true;
+ return null;
+}
+
+# 'nonempty' sections will not be shown if the corresponding data
+# value is the empty string
+function tem_auto_nonempty(&$value) {
+ if($value === '') return null;
+ return $value;
+}
+
+# 'unset' sections will not be shown if the corresponding data
+# value is not set (opposite of default)
+function tem_auto_unset(&$value) {
+ if($value === null) {
+ return '';
+ } else {
+ return null;
+ }
}
# 'evenodd' sections are given an 'evenodd' attribute whose value
# alternates between 'even' and 'odd'.
+function tem_auto_evenodd(&$values) {
+ $even = true;
+ if($values) foreach($values as &$value) {
+ $value['evenodd'] = $even ? 'even' : 'odd';
+ $even = !$even;
+ }
+ return $values;
+}
+
+# 'once' sections are shown exactly once if the value is set (and not at all
+# otherwise.) This is useful when an array value would otherwise cause the
+# section to be displayed multiple times.
+function tem_auto_once(&$value) {
+ if($value === null) return null;
+ return true;
+}
+
+function tem_auto_once_if(&$value) {
+ if($value) return true;
+ return null;
+}
+
+# 'once' sections are shown exactly once if php evaluates the value to false
+# (and not at all otherwise.) This is useful when an array value would
+# otherwise cause the section to be displayed multiple times.
+function tem_auto_once_else(&$value) {
+ if($value) return null;
+ return true;;
+}
+
+
+
+
+
+# Backward Compatibility
+# ----------------------
+
+function is_shown($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);
+ }
+}
-function tem_auto_evenodd($key, $context) {
- $rows = $context['data'][$key];
- $even = 0;
- $text = array('even', 'odd');
- foreach($rows as $key => $value) {
- $rows[$key]['evenodd'] = $text[$even];
- $even = 1 - $even;
+function tem_init() {
+ if(!$GLOBALS['wfpl_template']) {
+ $GLOBALS['wfpl_template'] = new tem();
}
- return tem_data_as_rows($rows);
+}
+
+function tem_append($key, $value) {
+ tem_init();
+ $GLOBALS['wfpl_template']->append($key, $value);
+}
+
+function tem_prepend($key, $value) {
+ tem_init();
+ $GLOBALS['wfpl_template']->prepend($key, $value);
+}
+
+function tem_set($key, $value = true) {
+ tem_init();
+ $GLOBALS['wfpl_template']->set($key, $value);
+}
+
+function tem_sets($hash) {
+ tem_init();
+ $GLOBALS['wfpl_template']->sets($hash);
+}
+
+function tem_get($key) {
+ tem_init();
+ return $GLOBALS['wfpl_template']->get($key);
+}
+
+function tem_run($tem = false) {
+ tem_init();
+ return $GLOBALS['wfpl_template']->run($tem);
+}
+
+function tem_show($name) {
+ tem_init();
+ return $GLOBALS['wfpl_template']->show($name);
+}
+
+function tem_show_separated($name) {
+ tem_init();
+ $GLOBALS['wfpl_template']->show_separated($name);
+}
+
+function tem_load($filename) {
+ tem_init();
+ $GLOBALS['wfpl_template']->load($filename);
+}
+
+function tem_merge($tem) {
+ tem_init();
+ $GLOBALS['wfpl_template']->merge($tem);
+}
+
+function tem_merge_file($filename) {
+ tem_init();
+ $GLOBALS['wfpl_template']->merge_file($filename);
+}
+
+function tem_output($filename = false) {
+ tem_init();
+ $GLOBALS['wfpl_template']->output($filename);
+}
+
+function tem_top_subs() {
+ tem_init();
+ return $GLOBALS['wfpl_template']->top_subs();
+}
+
+function tem_top_sub_names() {
+ tem_init();
+ return $GLOBALS['wfpl_template']->top_sub_names();
+}
+
+function tem_load_new($filename) {
+ $old = $GLOBALS['wfpl_template'];
+ $GLOBALS['wfpl_template'] = new tem();
+ $GLOBALS['wfpl_template']->load($filename);
+ return $old;
+}
+
+# deprecated (old name for show)
+function tem_sub($name) {
+ tem_show($name);
}
?>