backend for "save to file" feature

[friendica.git] / include / text.php

diff --git a/include/text.php b/include/text.php
index 5ad0154d7a3e3fc3aeb257cab83d53231d818144..08b2b8487604c2d5d2a6351514a89888c3b272d0 100644 (file)
--- a/include/text.php
+++ b/include/text.php
@@ -1235,4 +1235,23 @@ 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) . "' ";
+}
\ No newline at end of file