Merge branch 'master' of https://github.com/friendica/friendica

1 files changed, 73 insertions, 0 deletions

diff --git a/include/text.php b/include/text.php
index 5ad0154d7..011006b76 100644
--- a/include/text.php
+++ b/include/text.php
@@ -1235,4 +1235,77 @@ function item_post_type($item) {
 	return t('post');
 }
 
+// post categories and "save to file" use the same item.file table for storage.
+// We will differentiate the different uses by wrapping categories in angle brackets
+// and save to file categories in square brackets.
+// To do this we need to escape these characters if they appear in our tag. 
+
+function file_tag_encode($s) {
+	return str_replace(array('<','>','[',']'),array('%3c','%3e','%5b','%5d'),$s);
+}
+
+function file_tag_decode($s) {
+	return str_replace(array('%3c','%3e','%5b','%5d'),array('<','>','[',']'),$s);
+}
+
+function file_tag_file_query($table,$s,$type = 'file') {
+	if($type == 'file')
+		$str = preg_quote( '[' . file_tag_encode($s) . ']' );
+	else
+		$str = preg_quote( '<' . file_tag_encode($s) . '>' );
+	return " AND " . (($table) ? dbesc($table) . '.' : '') . "file regexp '" . dbesc($str) . "' ";
+}
+
+function file_tag_save_file($uid,$item,$file) {
+	$result = false;
+	if(! intval($uid))
+		return false;
+	$r = q("select file from item where id = %d and uid = %d limit 1",
+		intval($item),
+		intval($uid)
+	);
+	if(count($r)) {
+		if(! stristr($r[0]['file'],'[' . file_tag_encode($file) . ']'))
+			q("update item set file = '%s' where id = %d and uid = %d limit 1",
+				dbesc($r[0]['file'] . '[' . $file_tag_encode($file) . ']'),
+				intval($item),
+				intval($uid)
+			);
+		$saved = get_pconfig($uid,'system','filetags');
+		if((! strlen($saved)) || (! stristr($saved,'[' . file_tag_encode($file) . ']')))
+			set_pconfig($uid,'system','filetags',$saved . '[' . file_tag_encode($file) . ']');
+	}
+	return true;
+}
+
+function file_tag_unsave_file($uid,$item,$file) {
+	$result = false;
+	if(! intval($uid))
+		return false;
+
+	$pattern = '[' . file_tag_encode($file) . ']' ;
+
+	$r = q("select file from item where id = %d and uid = %d limit 1",
+		intval($item),
+		intval($uid)
+	);
+	if(! count($r))
+		return false;
+
+	q("update item set file = '%s' where id = %d and uid = %d limit 1",
+		dbesc(str_replace($pattern,'',$r[0]['file'])),
+		intval($item),
+		intval($uid)
+	);
+
+	$r = q("select file from item where uid = %d " . file_tag_file_query('item',$file),
+		intval($uid)
+	);
+
+	if(! count($r)) {
+		$saved = get_pconfig($uid,'system','filetags');
+		set_pconfig($uid,'system','filetags',str_replace($pattern,'',$saved));
+	}
+	return true;
+}