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-rw-r--r--engine/lib/output.php83
1 files changed, 82 insertions, 1 deletions
diff --git a/engine/lib/output.php b/engine/lib/output.php
index dd5c4cf59..61db401a1 100644
--- a/engine/lib/output.php
+++ b/engine/lib/output.php
@@ -140,6 +140,85 @@ function elgg_format_url($url) {
}
/**
+ * Converts an associative array into a string of well-formed attributes
+ *
+ * @note usually for HTML, but could be useful for XML too...
+ *
+ * @param array $attrs An associative array of attr => val pairs
+ *
+ * @return string HTML attributes to be inserted into a tag (e.g., <tag $attrs>)
+ */
+function elgg_format_attributes(array $attrs = array()) {
+ $attrs = elgg_clean_vars($attrs);
+ $attributes = array();
+
+ if (isset($attrs['js'])) {
+ //@todo deprecated notice?
+
+ if (!empty($attrs['js'])) {
+ $attributes[] = $attrs['js'];
+ }
+
+ unset($attrs['js']);
+ }
+
+ foreach ($attrs as $attr => $val) {
+ $attr = strtolower($attr);
+
+ if ($val === TRUE) {
+ $val = $attr; //e.g. checked => TRUE ==> checked="checked"
+ }
+
+ // ignore $vars['entity'] => ElggEntity stuff
+ if (is_not_null($val) && (is_array($val) || is_string($val))) {
+
+ // allow $vars['class'] => array('one', 'two');
+ // @todo what about $vars['style']? Needs to be semi-colon separated...
+ if (is_array($val)) {
+ $val = implode(' ', $val);
+ }
+
+ $val = htmlspecialchars($val);
+ $attributes[] = "$attr=\"$val\"";
+ }
+ }
+
+ return implode(' ', $attributes);
+}
+
+
+/**
+ * Preps an associative array for use in {@link elgg_format_attributes()}.
+ *
+ * Removes all the junk that {@link elgg_view()} puts into $vars.
+ * Maintains backward compatibility with attributes like 'internalname' and 'internalid'
+ *
+ * @note This function is called automatically by elgg_format_attributes(). No need to
+ * call it yourself before using elgg_format_attributes().
+ *
+ * @param array $vars The raw $vars array with all it's dirtiness (config, url, etc.)
+ *
+ * @return array The array, ready to be used in elgg_format_attributes().
+ */
+function elgg_clean_vars(array $vars = array()) {
+ unset($vars['config']);
+ unset($vars['url']);
+
+ // backwards compatibility code
+ if (isset($vars['internalname'])) {
+ $vars['name'] = $vars['internalname'];
+ unset($vars['internalname']);
+ }
+
+ if (isset($vars['internalid'])) {
+ $vars['id'] = $vars['internalid'];
+ unset($vars['internalid']);
+ }
+
+ return $vars;
+}
+
+/**
* Converts shorthand urls to absolute urls.
*
* If the url is already absolute or protocol-relative, no change is made.
@@ -164,7 +243,7 @@ function elgg_normalize_url($url) {
elseif (preg_match("#^[^/]*\.php(\?.*)?$#i", $url)) {
return elgg_get_site_url().$url;
}
-
+
// 'example.com', 'example.com/subpage'
elseif (preg_match("#^[^/]*\.#i", $url)) {
return "http://$url";
@@ -311,6 +390,8 @@ function elgg_strip_tags($string) {
return $string;
}
+
+
/**
* Filters a string into an array of significant words
*