[grilo-plugins] lua-factory: Work-around websites that still use ISO8859-1

[Bastien Nocera <hadess src gnome org>]

commit 1967395e3d706d44cdf3f46c2d4ebd11b04cf7a9
Author: Bastien Nocera <hadess hadess net>
Date:   Wed Jan 7 14:29:48 2015 +0100

    lua-factory: Work-around websites that still use ISO8859-1
    
    Try to fix data coming from websites that still use ISO8859-1 as the
    codeset. This is easier than offering codeset conversion to the lua
    sources, but might need to be done in the future.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=742523

 src/lua-factory/grl-lua-library.c |   29 +++++++++++++++++++++++++++--
 1 files changed, 27 insertions(+), 2 deletions(-)
---
diff --git a/src/lua-factory/grl-lua-library.c b/src/lua-factory/grl-lua-library.c
index 430d2f3..73c1b7f 100644
--- a/src/lua-factory/grl-lua-library.c
+++ b/src/lua-factory/grl-lua-library.c
@@ -141,6 +141,31 @@ unescape_string (const char *orig_from)
   return ret;
 }
 
+static void
+grl_data_set_lua_string (GrlData    *data,
+                         GrlKeyID    key_id,
+                         const char *key_name,
+                         const char *str)
+{
+  char *fixed = NULL;
+
+  /* Check for UTF-8 or ISO8859-1 string */
+  if (g_utf8_validate (str, -1, NULL) == FALSE) {
+    fixed = g_convert (str, -1, "UTF-8", "ISO8859-1", NULL, NULL, NULL);
+    if (fixed == NULL) {
+      g_warning ("Ignored non-UTF-8 and non-ISO8859-1 string for field '%s'", key_name);
+      return;
+    }
+  }
+
+  if (fixed) {
+    grl_data_set_string (data, key_id, fixed);
+    g_free (fixed);
+  } else {
+    grl_data_set_string (data, key_id, str);
+  }
+}
+
 /* Top of the stack must be a table */
 static void
 grl_util_add_table_to_media (lua_State *L,
@@ -174,7 +199,7 @@ grl_util_add_table_to_media (lua_State *L,
 
     case G_TYPE_STRING:
       if (lua_isstring (L, -1))
-        grl_data_add_string (GRL_DATA (media), key_id, lua_tostring (L, -1));
+        grl_data_set_lua_string (GRL_DATA (media), key_id, key_name, lua_tostring (L, -1));
       break;
 
     default:
@@ -264,7 +289,7 @@ grl_util_build_media (lua_State *L,
 
       case G_TYPE_STRING:
         if (lua_isstring (L, -1)) {
-          grl_data_set_string (GRL_DATA (media), key_id, lua_tostring (L, -1));
+          grl_data_set_lua_string (GRL_DATA (media), key_id, key_name, lua_tostring (L, -1));
         } else if (lua_istable (L, -1)) {
           grl_util_add_table_to_media (L, media, key_id, key_name, type);
         } else if (!lua_isnil (L, -1)) {