[tracker/wip/carlosg/cli-improvements: 5/8] tracker: Add pager support to "tracker3 sparql" command

[Carlos Garnacho <carlosg src gnome org>]

commit 47ccb7b5f549dfb83e3f6c24c7164742d41a6227
Author: Carlos Garnacho <carlosg gnome org>
Date:   Wed Aug 19 11:18:24 2020 +0200

    tracker: Add pager support to "tracker3 sparql" command

 src/tracker/tracker-sparql.c | 63 +++++++++++++++++++++++++-------------------
 1 file changed, 36 insertions(+), 27 deletions(-)
---
diff --git a/src/tracker/tracker-sparql.c b/src/tracker/tracker-sparql.c
index 988fb7a45..3901c7928 100644
--- a/src/tracker/tracker-sparql.c
+++ b/src/tracker/tracker-sparql.c
@@ -30,6 +30,7 @@
 #include <glib/gi18n.h>
 
 #include <libtracker-sparql/tracker-sparql.h>
+#include <libtracker-common/tracker-common.h>
 
 #include "tracker-sparql.h"
 #include "tracker-color.h"
@@ -1103,6 +1104,7 @@ sparql_run (void)
        TrackerSparqlConnection *connection;
        TrackerSparqlCursor *cursor;
        GError *error = NULL;
+       gint retval = EXIT_SUCCESS;
 
        connection = create_connection (&error);
 
@@ -1114,6 +1116,8 @@ sparql_run (void)
                return EXIT_FAILURE;
        }
 
+       tracker_term_pipe_to_pager ();
+
        if (list_classes) {
                const gchar *query;
 
@@ -1126,8 +1130,8 @@ sparql_run (void)
                                    error->message);
                        g_error_free (error);
                        g_object_unref (connection);
-
-                       return EXIT_FAILURE;
+                       retval = EXIT_FAILURE;
+                       goto out;
                }
 
                print_cursor (cursor, _("No classes were found"), _("Classes"), TRUE);
@@ -1150,8 +1154,8 @@ sparql_run (void)
                                    error->message);
                        g_error_free (error);
                        g_object_unref (connection);
-
-                       return EXIT_FAILURE;
+                       retval = EXIT_FAILURE;
+                       goto out;
                }
 
                print_cursor (cursor, _("No class prefixes were found"), _("Prefixes"), FALSE);
@@ -1191,8 +1195,8 @@ sparql_run (void)
                        if (!class_name_no_property) {
                                g_free (property);
                                g_object_unref (connection);
-
-                               return EXIT_FAILURE;
+                               retval = EXIT_FAILURE;
+                               goto out;
                        }
 
                        class_name = g_strconcat (class_name_no_property, property, NULL);
@@ -1217,8 +1221,8 @@ sparql_run (void)
                                    error->message);
                        g_error_free (error);
                        g_object_unref (connection);
-
-                       return EXIT_FAILURE;
+                       retval = EXIT_FAILURE;
+                       goto out;
                }
 
                print_cursor (cursor, _("No properties were found"), _("Properties"), TRUE);
@@ -1253,8 +1257,8 @@ sparql_run (void)
                                    error->message);
                        g_error_free (error);
                        g_object_unref (connection);
-
-                       return EXIT_FAILURE;
+                       retval = EXIT_FAILURE;
+                       goto out;
                }
 
                print_cursor (cursor, _("No notifies were found"), _("Notifies"), TRUE);
@@ -1287,8 +1291,8 @@ sparql_run (void)
                                    error->message);
                        g_error_free (error);
                        g_object_unref (connection);
-
-                       return EXIT_FAILURE;
+                       retval = EXIT_FAILURE;
+                       goto out;
                }
 
                print_cursor (cursor, _("No indexes were found"), _("Indexes"), TRUE);
@@ -1311,15 +1315,16 @@ sparql_run (void)
                                    error->message);
                        g_error_free (error);
                        g_object_unref (connection);
-
-                       return EXIT_FAILURE;
+                       retval = EXIT_FAILURE;
+                       goto out;
                }
 
                print_cursor (cursor, _("No graphs were found"), _("Named graphs"), TRUE);
        }
 
        if (tree) {
-               return tree_get (connection, tree, search);
+               retval = tree_get (connection, tree, search);
+               goto out;
        }
 
        if (search) {
@@ -1341,8 +1346,8 @@ sparql_run (void)
                                    error->message);
                        g_error_free (error);
                        g_object_unref (connection);
-
-                       return EXIT_FAILURE;
+                       retval = EXIT_FAILURE;
+                       goto out;
                }
 
                print_cursor (cursor, _("No classes were found to match search term"), _("Classes"), TRUE);
@@ -1364,8 +1369,8 @@ sparql_run (void)
                                    error->message);
                        g_error_free (error);
                        g_object_unref (connection);
-
-                       return EXIT_FAILURE;
+                       retval = EXIT_FAILURE;
+                       goto out;
                }
 
                print_cursor (cursor, _("No properties were found to match search term"), _("Properties"), 
TRUE);
@@ -1409,8 +1414,8 @@ sparql_run (void)
                                    error->message);
                        g_error_free (error);
                        g_object_unref (connection);
-
-                       return EXIT_FAILURE;
+                       retval = EXIT_FAILURE;
+                       goto out;
                }
 
                g_file_get_contents (path_in_utf8, &query, &size, &error);
@@ -1422,8 +1427,8 @@ sparql_run (void)
                        g_error_free (error);
                        g_free (path_in_utf8);
                        g_object_unref (connection);
-
-                       return EXIT_FAILURE;
+                       retval = EXIT_FAILURE;
+                       goto out;
                }
 
                g_free (path_in_utf8);
@@ -1438,8 +1443,8 @@ sparql_run (void)
                                            _("Could not run update"),
                                            error->message);
                                g_error_free (error);
-
-                               return EXIT_FAILURE;
+                               retval = EXIT_FAILURE;
+                               goto out;
                        }
 
                        g_print ("%s\n", _("Done"));
@@ -1491,7 +1496,8 @@ sparql_run (void)
                                        g_hash_table_unref (prefixes);
                                }
 
-                               return EXIT_FAILURE;
+                               retval = EXIT_FAILURE;
+                               goto out;
                        }
 
                        if (G_UNLIKELY (prefixes)) {
@@ -1505,7 +1511,10 @@ sparql_run (void)
 
        g_object_unref (connection);
 
-       return EXIT_SUCCESS;
+out:
+       tracker_term_pager_close ();
+
+       return retval;
 }
 
 static int