latexila -> gnome-latex migration: handle most used symbols

Requires GIO 2.56 for g_file_new_build_filename().

README

@@ -18,7 +18,7 @@ The web site:
 Dependencies
 ------------
 
-* GLib >= 2.50
+* GLib >= 2.56
 * GTK+ >= 3.22
 * GtkSourceView >= 4.0
 * Tepl >= 3.99.1 - https://wiki.gnome.org/Projects/Tepl

configure.ac

@@ -29,7 +29,7 @@ LT_INIT
 
 # Required dependencies versions
 # Update also the --target-glib option in src/Makefile.am.
-GLIB_REQUIRED_VERSION="2.50"
+GLIB_REQUIRED_VERSION="2.56"
 GTK_REQUIRED_VERSION="3.22"
 GTKSOURCEVIEW_REQUIRED_VERSION="4.0"
 TEPL_REQUIRED_VERSION="3.99.1"

src/liblatexila/latexila-utils.c

@@ -576,14 +576,56 @@ out:
 	g_object_unref (settings);
 }
 
+static void
+migrate_latexila_to_gnome_latex_most_used_symbols (void)
+{
+	GFile *latexila_file;
+	GFile *glatex_file;
+	GError *error = NULL;
+
+	latexila_file = g_file_new_build_filename (g_get_user_data_dir (),
+						   "latexila",
+						   "most_used_symbols.xml",
+						   NULL);
+
+	glatex_file = g_file_new_build_filename (g_get_user_data_dir (),
+						 "gnome-latex",
+						 "most_used_symbols.xml",
+						 NULL);
+
+	latexila_utils_create_parent_directories (glatex_file, &error);
+	if (error != NULL)
+	{
+		goto out;
+	}
+
+	g_file_copy (latexila_file,
+		     glatex_file,
+		     G_FILE_COPY_TARGET_DEFAULT_PERMS,
+		     NULL, NULL, NULL,
+		     &error);
+
+out:
+	if (error != NULL)
+	{
+		g_warning ("Error when migrating LaTeXila to GNOME LaTeX most used symbols: %s",
+			   error->message);
+		g_clear_error (&error);
+	}
+
+	g_object_unref (latexila_file);
+	g_object_unref (glatex_file);
+}
+
 /**
  * latexila_utils_migrate_latexila_to_gnome_latex:
  *
- * Migrates the #GSettings values from LaTeXila to GNOME LaTeX, so that users
- * don't lose all their settings.
+ * Migrates the #GSettings values and user data/config files from LaTeXila to
+ * GNOME LaTeX, so that users don't lose all their settings.
  */
 void
 latexila_utils_migrate_latexila_to_gnome_latex (void)
 {
 	migrate_latexila_to_gnome_latex_gsettings ();
+	migrate_latexila_to_gnome_latex_most_used_symbols ();
 }

src/most_used_symbols.vala

@@ -130,7 +130,7 @@ public class MostUsedSymbols : GLib.Object
     private File get_xml_file ()
     {
         string path = Path.build_filename (Environment.get_user_data_dir (),
-            "latexila", "most_used_symbols.xml");
+            "gnome-latex", "most_used_symbols.xml");
 
         return File.new_for_path (path);
     }