[tracker] examples: Update example FS miner to current API

[Sam Thursfield <sthursfield src gnome org>]

commit 323dd214f4412d8ff4d09dc9427b42230b6eadfd
Author: Sam Thursfield <sam afuera me uk>
Date:   Sun Sep 25 14:05:23 2016 +0100

    examples: Update example FS miner to current API
    
    The code didn't work at all due to API changes in libtracker-miner.

 examples/libtracker-miner/tracker-main.c       |  175 ++++++------------------
 examples/libtracker-miner/tracker-miner-test.c |    8 +-
 2 files changed, 48 insertions(+), 135 deletions(-)
---
diff --git a/examples/libtracker-miner/tracker-main.c b/examples/libtracker-miner/tracker-main.c
index a6699c7..e563b8c 100644
--- a/examples/libtracker-miner/tracker-main.c
+++ b/examples/libtracker-miner/tracker-main.c
@@ -24,8 +24,6 @@
 
 #include <glib.h>
 
-#include <libtracker-common/tracker-utils.h>
-
 #include "tracker-miner-test.h"
 
 static void
@@ -59,103 +57,6 @@ miner_start_cb (gpointer user_data)
 }
 
 static gboolean
-check_directory_cb (TrackerMinerFS *fs,
-                    GFile          *file,
-                    gpointer        user_data)
-{
-       gchar *path;
-       gchar *basename;
-       gboolean should_process;
-
-       should_process = FALSE;
-       basename = NULL;
-       path = g_file_get_path (file);
-
-       if (tracker_is_empty_string (path)) {
-               goto done;
-       }
-
-       if (!g_utf8_validate (path, -1, NULL)) {
-               g_message ("Ignoring path:'%s', not valid UTF-8", path);
-               goto done;
-       }
-
-       /* Most common things to ignore */
-       if (strcmp (path, "/dev") == 0 ||
-           strcmp (path, "/lib") == 0 ||
-           strcmp (path, "/proc") == 0 ||
-           strcmp (path, "/sys") == 0) {
-               goto done;
-       }
-
-       if (g_str_has_prefix (path, g_get_tmp_dir ())) {
-               goto done;
-       }
-
-       /* Check ignored directories in config */
-       basename = g_file_get_basename (file);
-
-       if (!basename) {
-               goto done;
-       }
-
-       /* If directory begins with ".", check it isn't one of
-        * the top level directories to watch/crawl if it
-        * isn't we ignore it. If it is, we don't.
-        */
-       if (basename[0] == '.') {
-               goto done;
-       }
-
-       /* Check module directory ignore patterns */
-       should_process = TRUE;
-
- done:
-       g_free (path);
-       g_free (basename);
-
-       return should_process;
-}
-
-static gboolean
-check_file_cb (TrackerMinerFS *fs,
-               GFile          *file,
-               gpointer                user_data)
-{
-       gchar *path;
-       gchar *basename;
-       gboolean should_process;
-
-       should_process = FALSE;
-       basename = NULL;
-       path = g_file_get_path (file);
-
-       if (tracker_is_empty_string (path)) {
-               goto done;
-       }
-
-       if (!g_utf8_validate (path, -1, NULL)) {
-               g_message ("Ignoring path:'%s', not valid UTF-8", path);
-               goto done;
-       }
-
-       /* Check basename against pattern matches */
-       basename = g_file_get_basename (file);
-
-       if (!basename || basename[0] == '.') {
-               goto done;
-       }
-
-       should_process = TRUE;
-
- done:
-       g_free (path);
-       g_free (basename);
-
-       return should_process;
-}
-
-static void
 process_file_cb (TrackerMinerFS *fs,
                  GFile          *file,
                  gpointer        user_data)
@@ -165,13 +66,11 @@ process_file_cb (TrackerMinerFS *fs,
        path = g_file_get_path (file);
        g_print ("** PROCESSING FILE:'%s'\n", path);
        g_free (path);
-}
 
-static gboolean
-monitor_directory_cb (TrackerMinerFS *fs,
-                      GFile          *file,
-                      gpointer        user_data)
-{
+       /* Notify that processing is complete. */
+       tracker_miner_fs_file_notify (fs, file, NULL);
+
+       /* Return FALSE here if you ignored the file. */
        return TRUE;
 }
 
@@ -187,53 +86,65 @@ add_directory_path (TrackerMinerFS *fs,
        g_object_unref (file);
 }
 
+static void
+add_special_directory (TrackerMinerFS *fs,
+                       GUserDirectory  dir,
+                       const char     *dir_name,
+                       gboolean        recurse)
+{
+       if (strcmp (g_get_user_special_dir (dir), g_get_home_dir ()) == 0) {
+               g_message ("User dir %s is set to home directory; ignoring.", dir_name);
+       } else {
+               add_directory_path (fs,
+                                   g_get_user_special_dir (dir),
+                                   recurse);
+       }
+}
+
 int
 main (int argc, char *argv[])
 {
        TrackerMiner *miner;
+       TrackerIndexingTree *tree;
        GMainLoop *main_loop;
 
        main_loop = g_main_loop_new (NULL, FALSE);
 
        miner = tracker_miner_test_new ("test");
 
-       g_signal_connect (TRACKER_MINER_FS (miner), "check-file",
-                         G_CALLBACK (check_file_cb),
-                         NULL);
-       g_signal_connect (TRACKER_MINER_FS (miner), "check-directory",
-                         G_CALLBACK (check_directory_cb),
-                         NULL);
        g_signal_connect (TRACKER_MINER_FS (miner), "process-file",
                          G_CALLBACK (process_file_cb),
                          NULL);
-       g_signal_connect (TRACKER_MINER_FS (miner), "monitor-directory",
-                         G_CALLBACK (monitor_directory_cb),
-                         NULL);
+
+       tree = tracker_miner_fs_get_indexing_tree (TRACKER_MINER_FS (miner));
+
+       /* Ignore files that g_file_info_get_is_hidden() tells us are hidden files. */
+       tracker_indexing_tree_set_filter_hidden (tree, TRUE);
+
+       /* Ignore special filesystems that definitely shouldn't be indexed */
+       /* FIXME: it would be better to avoid based on filesystem type; i.e. avoid
+        * devtmpfs, sysfs and procfs filesystems. */
+       tracker_indexing_tree_add_filter(tree, TRACKER_FILTER_PARENT_DIRECTORY, "/dev");
+       tracker_indexing_tree_add_filter(tree, TRACKER_FILTER_PARENT_DIRECTORY, "/proc");
+       tracker_indexing_tree_add_filter(tree, TRACKER_FILTER_PARENT_DIRECTORY, "/sys");
+
+       tracker_indexing_tree_add_filter(tree, TRACKER_FILTER_PARENT_DIRECTORY, g_get_tmp_dir());
 
        add_directory_path (TRACKER_MINER_FS (miner),
                            g_get_home_dir (),
                            FALSE);
+
+       /* This should be ignored */
        add_directory_path (TRACKER_MINER_FS (miner),
                            g_get_tmp_dir (),
                            TRUE);
-       add_directory_path (TRACKER_MINER_FS (miner),
-                           g_get_user_special_dir (G_USER_DIRECTORY_PICTURES),
-                           TRUE);
-       add_directory_path (TRACKER_MINER_FS (miner),
-                           g_get_user_special_dir (G_USER_DIRECTORY_MUSIC),
-                           TRUE);
-       add_directory_path (TRACKER_MINER_FS (miner),
-                           g_get_user_special_dir (G_USER_DIRECTORY_VIDEOS),
-                           TRUE);
-       add_directory_path (TRACKER_MINER_FS (miner),
-                           g_get_user_special_dir (G_USER_DIRECTORY_DOWNLOAD),
-                           FALSE);
-       add_directory_path (TRACKER_MINER_FS (miner),
-                           g_get_user_special_dir (G_USER_DIRECTORY_DOCUMENTS),
-                           TRUE);
-       add_directory_path (TRACKER_MINER_FS (miner),
-                           g_get_user_special_dir (G_USER_DIRECTORY_DESKTOP),
-                           TRUE);
+
+       add_special_directory (TRACKER_MINER_FS (miner), G_USER_DIRECTORY_PICTURES, "PICTURES", TRUE);
+       add_special_directory (TRACKER_MINER_FS (miner), G_USER_DIRECTORY_MUSIC, "MUSIC", TRUE);
+       add_special_directory (TRACKER_MINER_FS (miner), G_USER_DIRECTORY_VIDEOS, "VIDEOS", TRUE);
+       add_special_directory (TRACKER_MINER_FS (miner), G_USER_DIRECTORY_DOWNLOAD, "DOWNLOAD", TRUE);
+       add_special_directory (TRACKER_MINER_FS (miner), G_USER_DIRECTORY_DOCUMENTS, "DOCUMENTS", TRUE);
+       add_special_directory (TRACKER_MINER_FS (miner), G_USER_DIRECTORY_DESKTOP, "DESKTOP", TRUE);
 
        g_signal_connect (miner, "finished",
                          G_CALLBACK (miner_finished_cb),
diff --git a/examples/libtracker-miner/tracker-miner-test.c b/examples/libtracker-miner/tracker-miner-test.c
index 6d2b41c..60148d7 100644
--- a/examples/libtracker-miner/tracker-miner-test.c
+++ b/examples/libtracker-miner/tracker-miner-test.c
@@ -36,7 +36,9 @@ tracker_miner_test_init (TrackerMinerTest *miner)
 TrackerMiner *
 tracker_miner_test_new (const gchar *name)
 {
-       return g_object_new (TRACKER_TYPE_MINER_TEST,
-                            "name", name,
-                            NULL);
+       return g_initable_new (TRACKER_TYPE_MINER_TEST,
+                              NULL,
+                              NULL,
+                              "name", name,
+                              NULL);
 }