[tracker-miners/wip/carlosg/cli-improvements: 21/30] tracker: Make "tracker3 index" with no args list indexed folders

[Carlos Garnacho <carlosg src gnome org>]

commit bbd3acd7e11f1ed79f18dcfaaf3fbfa2705ae895
Author: Carlos Garnacho <carlosg gnome org>
Date:   Mon Aug 17 20:00:03 2020 +0200

    tracker: Make "tracker3 index" with no args list indexed folders
    
    This is our configuration UI! :).

 src/tracker/tracker-index.c | 113 ++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 108 insertions(+), 5 deletions(-)
---
diff --git a/src/tracker/tracker-index.c b/src/tracker/tracker-index.c
index a5724e758..506ca2e4e 100644
--- a/src/tracker/tracker-index.c
+++ b/src/tracker/tracker-index.c
@@ -32,7 +32,9 @@
 #include <locale.h>
 
 #include <libtracker-sparql/tracker-sparql.h>
+#include <libtracker-miners-common/tracker-common.h>
 
+#include "tracker-color.h"
 #include "tracker-dbus.h"
 #include "tracker-miner-manager.h"
 
@@ -49,6 +51,45 @@ static GOptionEntry entries[] = {
        { NULL }
 };
 
+const struct {
+       const gchar *symbol;
+       GUserDirectory user_dir;
+} special_dirs[] = {
+       { "&DESKTOP",      G_USER_DIRECTORY_DESKTOP },
+       { "&DOCUMENTS",    G_USER_DIRECTORY_DOCUMENTS },
+       { "&DOWNLOAD",     G_USER_DIRECTORY_DOWNLOAD },
+       { "&MUSIC",        G_USER_DIRECTORY_MUSIC },
+       { "&PICTURES",     G_USER_DIRECTORY_PICTURES },
+       { "&PUBLIC_SHARE", G_USER_DIRECTORY_PUBLIC_SHARE },
+       { "&TEMPLATES",    G_USER_DIRECTORY_TEMPLATES },
+       { "&VIDEOS",       G_USER_DIRECTORY_VIDEOS }
+};
+
+static const gchar *
+alias_to_path (const gchar *alias)
+{
+       guint i;
+
+       for (i = 0; i < G_N_ELEMENTS (special_dirs); i++) {
+               if (g_strcmp0 (special_dirs[i].symbol, alias) == 0)
+                       return g_get_user_special_dir (special_dirs[i].user_dir);
+       }
+
+       return NULL;
+}
+
+static const gchar *
+envvar_to_path (const gchar *envvar)
+{
+       const gchar *path;
+
+       path = g_getenv (&envvar[1]);
+       if (g_file_test (path, G_FILE_TEST_EXISTS))
+               return path;
+
+       return NULL;
+}
+
 static gint
 index_or_reindex_file (void)
 {
@@ -95,6 +136,69 @@ index_run (void)
        return index_or_reindex_file ();
 }
 
+static void
+print_list (GStrv    list,
+            gint     len,
+            gboolean recursive)
+{
+       guint i;
+
+       for (i = 0; list[i]; i++) {
+               const gchar *path;
+               gchar *str;
+
+               if (list[i][0] == '&')
+                       path = alias_to_path (list[i]);
+               else if (list[i][0] == '$')
+                       path = envvar_to_path (list[i]);
+               else if (list[i][0] == '/')
+                       path = list[i];
+               else
+                       continue;
+
+               str = tracker_term_ellipsize (path, len, TRACKER_ELLIPSIZE_START);
+               g_print ("%-*s " BOLD_BEGIN "%s" BOLD_END "\n",
+                        len, str,
+                        recursive ? "*" : "-");
+               g_free (str);
+       }
+}
+
+static int
+list_index_roots (void)
+{
+       GSettings *settings;
+       GStrv recursive, non_recursive;
+       gint cols, col_len[2];
+       gchar *col_header1, *col_header2;
+
+       settings = g_settings_new ("org.freedesktop.Tracker3.Miner.Files");
+       recursive = g_settings_get_strv (settings, "index-recursive-directories");
+       non_recursive = g_settings_get_strv (settings, "index-single-directories");
+
+       tracker_term_dimensions (&cols, NULL);
+       col_len[0] = cols * 3 / 4;
+       col_len[1] = cols / 4 - 1;
+
+       col_header1 = tracker_term_ellipsize (_("Path"), col_len[0], TRACKER_ELLIPSIZE_END);
+       col_header2 = tracker_term_ellipsize (_("Recursive"), col_len[1], TRACKER_ELLIPSIZE_END);
+
+       g_print (BOLD_BEGIN "%-*s %-*s" BOLD_END "\n",
+                col_len[0], col_header1,
+                col_len[1], col_header2);
+       g_free (col_header1);
+       g_free (col_header2);
+
+       print_list (recursive, col_len[0], TRUE);
+       print_list (non_recursive, col_len[0], FALSE);
+
+       g_strfreev (recursive);
+       g_strfreev (non_recursive);
+       g_object_unref (settings);
+
+       return EXIT_SUCCESS;
+}
+
 int
 main (int argc, const char **argv)
 {
@@ -122,13 +226,12 @@ main (int argc, const char **argv)
 
        g_option_context_free (context);
 
-       if (!filenames || g_strv_length (filenames) < 1) {
-               failed = _("Please specify one or more locations to index.");
-       } else {
-               failed = NULL;
+       if (!filenames) {
+               return list_index_roots ();
        }
 
-       if (failed) {
+       if (g_strv_length (filenames) < 1) {
+               failed = _("Please specify one or more locations to index.");
                g_printerr ("%s\n", failed);
                return EXIT_FAILURE;
        }