Bug#21370: View renaming lacks tablename_to_filename encoding

  Problem: renaming of FRM file and ARC files didn't use file name
  encoding, so RENAME TABLE for views failed for views having
  "tricky" characters in their names.
  Fix: adding build_table_filename() in missing places.

mysql-test/r/view.result

@@ -2957,3 +2957,22 @@ v1	CREATE ALGORITHM=MERGE DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `
 DROP VIEW v1;
 DROP TABLE t1, t2;
 End of 5.0 tests.
+DROP DATABASE IF EXISTS `d-1`;
+CREATE DATABASE `d-1`;
+USE `d-1`;
+CREATE TABLE `t-1` (c1 INT);
+CREATE VIEW  `v-1` AS SELECT c1 FROM `t-1`;
+SHOW TABLES;
+Tables_in_d-1
+t-1
+v-1
+RENAME TABLE `t-1` TO `t-2`;
+RENAME TABLE `v-1` TO `v-2`;
+SHOW TABLES;
+Tables_in_d-1
+t-2
+v-2
+DROP TABLE `t-2`;
+DROP VIEW  `v-2`;
+DROP DATABASE `d-1`;
+USE test;

mysql-test/t/view.test

@@ -2885,3 +2885,22 @@ SHOW CREATE VIEW v1;
 DROP VIEW v1;
 DROP TABLE t1, t2;
 --echo End of 5.0 tests.
+
+#
+# Bug#21370 View renaming lacks tablename_to_filename encoding
+#
+--disable_warnings
+DROP DATABASE IF EXISTS `d-1`;
+--enable_warnings
+CREATE DATABASE `d-1`;
+USE `d-1`;
+CREATE TABLE `t-1` (c1 INT);
+CREATE VIEW  `v-1` AS SELECT c1 FROM `t-1`;
+SHOW TABLES;
+RENAME TABLE `t-1` TO `t-2`;
+RENAME TABLE `v-1` TO `v-2`;
+SHOW TABLES;
+DROP TABLE `t-2`;
+DROP VIEW  `v-2`;
+DROP DATABASE `d-1`;
+USE test;

sql/parse_file.cc

@@ -368,32 +368,33 @@ my_bool rename_in_schema_file(const char *schema, const char *old_name,
 {
   char old_path[FN_REFLEN], new_path[FN_REFLEN], arc_path[FN_REFLEN];
 
-  strxnmov(old_path, FN_REFLEN-1, mysql_data_home, "/", schema, "/",
-           old_name, reg_ext, NullS);
-  (void) unpack_filename(old_path, old_path);
-
-  strxnmov(new_path, FN_REFLEN-1, mysql_data_home, "/", schema, "/",
-           new_name, reg_ext, NullS);
-  (void) unpack_filename(new_path, new_path);
+  build_table_filename(old_path, sizeof(old_path) - 1,
+                       schema, old_name, reg_ext, 0);
+  build_table_filename(new_path, sizeof(new_path) - 1,
+                       schema, new_name, reg_ext, 0);
 
   if (my_rename(old_path, new_path, MYF(MY_WME)))
     return 1;
 
   /* check if arc_dir exists */
-  strxnmov(arc_path, FN_REFLEN-1, mysql_data_home, "/", schema, "/arc", NullS);
-  (void) unpack_filename(arc_path, arc_path);
+  build_table_filename(arc_path, sizeof(arc_path) - 1, schema, "arc", "", 0);
   
   if (revision > 0 && !access(arc_path, F_OK))
   {
+    char old_name_buf[FN_REFLEN], new_name_buf[FN_REFLEN];
     ulonglong limit= ((revision > num_view_backups) ?
                       revision - num_view_backups : 0);
+
+    VOID(tablename_to_filename(old_name, old_name_buf, sizeof(old_name_buf)));
+    VOID(tablename_to_filename(new_name, new_name_buf, sizeof(new_name_buf)));
+
     for (; revision > limit ; revision--)
     {
       my_snprintf(old_path, FN_REFLEN, "%s/%s%s-%04lu",
-		  arc_path, old_name, reg_ext, (ulong)revision);
+		  arc_path, old_name_buf, reg_ext, (ulong) revision);
       (void) unpack_filename(old_path, old_path);
       my_snprintf(new_path, FN_REFLEN, "%s/%s%s-%04lu",
-		  arc_path, new_name, reg_ext, (ulong)revision);
+		  arc_path, new_name_buf, reg_ext, (ulong) revision);
       (void) unpack_filename(new_path, new_path);
       my_rename(old_path, new_path, MYF(0));
     }

sql/sql_view.cc

@@ -1655,24 +1655,23 @@ mysql_rename_view(THD *thd,
                   const char *new_name,
                   TABLE_LIST *view)
 {
-  LEX_STRING pathstr, file;
+  LEX_STRING pathstr;
   File_parser *parser;
-  char view_path[FN_REFLEN];
+  char path_buff[FN_REFLEN];
   bool error= TRUE;
   DBUG_ENTER("mysql_rename_view");
 
-  strxnmov(view_path, FN_REFLEN-1, mysql_data_home, "/", view->db, "/",
-           view->table_name, reg_ext, NullS);
-  (void) unpack_filename(view_path, view_path);
-
-  pathstr.str= (char *)view_path;
-  pathstr.length= strlen(view_path);
+  pathstr.str= (char *) path_buff;
+  pathstr.length= build_table_filename(path_buff, sizeof(path_buff) - 1,
+                                       view->db, view->table_name,
+                                       reg_ext, 0);
 
   if ((parser= sql_parse_prepare(&pathstr, thd->mem_root, 1)) && 
        is_equal(&view_type, parser->type()))
   {
     TABLE_LIST view_def;
-    char dir_buff[FN_REFLEN], file_buff[FN_REFLEN];
+    char dir_buff[FN_REFLEN];
+    LEX_STRING dir, file;
 
     /*
       To be PS-friendly we should either to restore state of
@@ -1695,18 +1694,18 @@ mysql_rename_view(THD *thd,
                               view_def.revision - 1, num_view_backups))
       goto err;
 
-    strxnmov(dir_buff, FN_REFLEN-1, mysql_data_home, "/", view->db, "/",
-             NullS);
-    (void) unpack_filename(dir_buff, dir_buff);
+    dir.str= dir_buff;
+    dir.length= build_table_filename(dir_buff, sizeof(dir_buff) - 1,
+                                     view->db, "", "", 0);
 
-    pathstr.str=    (char*)dir_buff;
-    pathstr.length= strlen(dir_buff);
+    pathstr.str= path_buff;
+    pathstr.length= build_table_filename(path_buff, sizeof(path_buff) - 1,
+                                      view->db, new_name, reg_ext, 0);
 
-    file.str= file_buff;
-    file.length= (strxnmov(file_buff, FN_REFLEN, new_name, reg_ext, NullS) 
-                  - file_buff);
+    file.str= pathstr.str + dir.length;
+    file.length= pathstr.length - dir.length;
 
-    if (sql_create_definition_file(&pathstr, &file, view_file_type,
+    if (sql_create_definition_file(&dir, &file, view_file_type,
                                    (gptr)&view_def, view_parameters,
                                    num_view_backups)) 
     {