tpaw-utils: move empathy_xml_validate_from_resource to tp-aw and rename it

This commit also changes the licence of the moved code (all copyrighted by
Collabora Ltd.) from GPL to LGPL.

https://bugzilla.gnome.org/show_bug.cgi?id=699492

3 files changed, 44 insertions, 1 deletions

diff --git a/tp-account-widgets/tpaw-irc-network-manager.c b/tp-account-widgets/tpaw-irc-network-manager.c
index e6fdebac..12c73d6d 100644
--- a/tp-account-widgets/tpaw-irc-network-manager.c
+++ b/tp-account-widgets/tpaw-irc-network-manager.c
@@ -24,6 +24,7 @@
 #include <sys/stat.h>
 
 #include "empathy-utils.h"
+#include "tpaw-utils.h"
 
 #define DEBUG_FLAG EMPATHY_DEBUG_IRC
 #include "empathy-debug.h"
@@ -632,7 +633,7 @@ irc_network_manager_file_parse (TpawIrcNetworkManager *self,
       return FALSE;
     }
 
-  if (!empathy_xml_validate_from_resource (doc, IRC_NETWORKS_DTD_RESOURCENAME)) {
+  if (!tpaw_xml_validate_from_resource (doc, IRC_NETWORKS_DTD_RESOURCENAME)) {
     g_warning ("Failed to validate file:'%s'", filename);
     xmlFreeDoc (doc);
     xmlFreeParserCtxt (ctxt);
diff --git a/tp-account-widgets/tpaw-utils.c b/tp-account-widgets/tpaw-utils.c
index 933b8570..a31fc268 100644
--- a/tp-account-widgets/tpaw-utils.c
+++ b/tp-account-widgets/tpaw-utils.c
@@ -12,6 +12,7 @@
  *          Richard Hult <richard@imendio.com>
  *          Martyn Russell <martyn@imendio.com>
  *          Steve Frécinaux <code@istique.net>
+ *          Emanuele Aina <emanuele.aina@collabora.co.uk>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -181,6 +182,41 @@ tpaw_make_color_whiter (GdkRGBA *color)
   color->blue = (color->blue + white.blue) / 2;
 }
 
+gboolean
+tpaw_xml_validate_from_resource (xmlDoc *doc,
+    const gchar *dtd_resourcename)
+{
+  GBytes *resourcecontents;
+  gconstpointer resourcedata;
+  gsize resourcesize;
+  xmlParserInputBufferPtr buffer;
+  xmlValidCtxt  cvp;
+  xmlDtd *dtd;
+  GError *error = NULL;
+  gboolean ret;
+
+  DEBUG ("Loading dtd resource %s", dtd_resourcename);
+
+  resourcecontents = g_resources_lookup_data (dtd_resourcename, G_RESOURCE_LOOKUP_FLAGS_NONE, &error);
+  if (error != NULL)
+    {
+      g_warning ("Unable to load dtd resource '%s': %s", dtd_resourcename, error->message);
+      g_error_free (error);
+      return FALSE;
+    }
+  resourcedata = g_bytes_get_data (resourcecontents, &resourcesize);
+  buffer = xmlParserInputBufferCreateStatic (resourcedata, resourcesize, XML_CHAR_ENCODING_UTF8);
+
+  memset (&cvp, 0, sizeof (cvp));
+  dtd = xmlIOParseDTD (NULL, buffer, XML_CHAR_ENCODING_UTF8);
+  ret = xmlValidateDtd (&cvp, doc, dtd);
+
+  xmlFreeDtd (dtd);
+  g_bytes_unref (resourcecontents);
+
+  return ret;
+}
+
 /* Takes care of moving the window to the current workspace. */
 void
 tpaw_window_present_with_time (GtkWindow *window,
diff --git a/tp-account-widgets/tpaw-utils.h b/tp-account-widgets/tpaw-utils.h
index f82b5a6f..8a40dc93 100644
--- a/tp-account-widgets/tpaw-utils.h
+++ b/tp-account-widgets/tpaw-utils.h
@@ -12,6 +12,7 @@
  *          Richard Hult <richard@imendio.com>
  *          Martyn Russell <martyn@imendio.com>
  *          Steve Frécinaux <code@istique.net>
+ *          Emanuele Aina <emanuele.aina@collabora.co.uk>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -33,6 +34,7 @@
 
 #include <glib.h>
 #include <gtk/gtk.h>
+#include <libxml/tree.h>
 #include <telepathy-glib/telepathy-glib.h>
 
 G_BEGIN_DECLS
@@ -44,6 +46,10 @@ gchar *tpaw_protocol_icon_name (const gchar *protocol);
 const gchar *tpaw_protocol_name_to_display_name (const gchar *proto_name);
 const gchar *tpaw_service_name_to_display_name (const gchar *proto_name);
 
+/* XML */
+gboolean tpaw_xml_validate_from_resource (xmlDoc *doc,
+    const gchar *dtd_resourcename);
+
 void  tpaw_make_color_whiter (GdkRGBA *color);
 
 /* Windows */