Add a new gio commandline tool

This command collects the various commandline utilities that
are currently shipped in gvfs, and unifies them under a single,
command-style binary.

The tools just use GIO APIs, so it makes sense for them to live here.

1 files changed, 278 insertions, 0 deletions

diff --git a/gio/gio-tool-monitor.c b/gio/gio-tool-monitor.c
new file mode 100644
index 000000000..e137a5d16
--- /dev/null
+++ b/gio/gio-tool-monitor.c
@@ -0,0 +1,278 @@
+/*
+ * Copyright 2015 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Matthias Clasen <mclasen@redhat.com>
+ */
+
+#include "config.h"
+
+#include <gio/gio.h>
+#include <gi18n.h>
+
+#include "gio-tool.h"
+
+static gchar **watch_dirs;
+static gchar **watch_files;
+static gchar **watch_direct;
+static gchar **watch_silent;
+static gchar **watch_default;
+static gboolean no_moves;
+static gboolean mounts;
+
+static const GOptionEntry entries[] = {
+  { "dir", 'd', 0, G_OPTION_ARG_FILENAME_ARRAY, &watch_dirs,
+      N_("Monitor a directory (default: depends on type)"), N_("LOCATION") },
+  { "file", 'f', 0, G_OPTION_ARG_FILENAME_ARRAY, &watch_files,
+      N_("Monitor a file (default: depends on type)"), N_("LOCATION") },
+  { "direct", 'D', 0, G_OPTION_ARG_FILENAME_ARRAY, &watch_direct,
+      N_("Monitor a file directly (notices changes made via hardlinks)"), N_("LOCATION") },
+  { "silent", 's', 0, G_OPTION_ARG_FILENAME_ARRAY, &watch_silent,
+      N_("Monitors a file directly, but doesn't report changes"), N_("LOCATION") },
+  { "no-moves", 'n', 0, G_OPTION_ARG_NONE, &no_moves,
+      N_("Report moves and renames as simple deleted/created events"), NULL },
+  { "mounts", 'm', 0, G_OPTION_ARG_NONE, &mounts,
+      N_("Watch for mount events"), NULL },
+  { G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &watch_default },
+  { NULL }
+};
+
+static void
+watch_callback (GFileMonitor      *monitor,
+                GFile             *child,
+                GFile             *other,
+                GFileMonitorEvent  event_type,
+                gpointer           user_data)
+{
+  gchar *child_str;
+  gchar *other_str;
+
+  g_assert (child);
+
+  if (g_file_is_native (child))
+    child_str = g_file_get_path (child);
+  else
+    child_str = g_file_get_uri (child);
+
+  if (other)
+    {
+      if (g_file_is_native (other))
+        other_str = g_file_get_path (other);
+      else
+        other_str = g_file_get_uri (other);
+    }
+  else
+    other_str = g_strdup ("(none)");
+
+  g_print ("%s: ", (gchar *) user_data);
+  switch (event_type)
+    {
+    case G_FILE_MONITOR_EVENT_CHANGED:
+      g_assert (!other);
+      g_print ("%s: changed", child_str);
+      break;
+    case G_FILE_MONITOR_EVENT_CHANGES_DONE_HINT:
+      g_assert (!other);
+      g_print ("%s: changes done", child_str);
+      break;
+    case G_FILE_MONITOR_EVENT_DELETED:
+      g_assert (!other);
+      g_print ("%s: deleted", child_str);
+      break;
+    case G_FILE_MONITOR_EVENT_CREATED:
+      g_assert (!other);
+      g_print ("%s: created", child_str);
+      break;
+    case G_FILE_MONITOR_EVENT_ATTRIBUTE_CHANGED:
+      g_assert (!other);
+      g_print ("%s: attributes changed", child_str);
+      break;
+    case G_FILE_MONITOR_EVENT_PRE_UNMOUNT:
+      g_assert (!other);
+      g_print ("%s: pre-unmount", child_str);
+      break;
+    case G_FILE_MONITOR_EVENT_UNMOUNTED:
+      g_assert (!other);
+      g_print ("%s: unmounted", child_str);
+      break;
+    case G_FILE_MONITOR_EVENT_MOVED_IN:
+      g_print ("%s: moved in", child_str);
+      if (other)
+        g_print (" (from %s)", other_str);
+      break;
+    case G_FILE_MONITOR_EVENT_MOVED_OUT:
+      g_print ("%s: moved out", child_str);
+      if (other)
+        g_print (" (to %s)", other_str);
+      break;
+    case G_FILE_MONITOR_EVENT_RENAMED:
+      g_assert (other);
+      g_print ("%s: renamed to %s\n", child_str, other_str);
+      break;
+
+    case G_FILE_MONITOR_EVENT_MOVED:
+    default:
+      g_assert_not_reached ();
+    }
+
+  g_free (child_str);
+  g_free (other_str);
+  g_print ("\n");
+}
+
+typedef enum
+{
+  WATCH_DIR,
+  WATCH_FILE,
+  WATCH_AUTO
+} WatchType;
+
+static gboolean
+add_watch (const gchar       *cmdline,
+           WatchType          watch_type,
+           GFileMonitorFlags  flags,
+           gboolean           connect_handler)
+{
+  GFileMonitor *monitor = NULL;
+  GError *error = NULL;
+  GFile *file;
+
+  file = g_file_new_for_commandline_arg (cmdline);
+
+  if (watch_type == WATCH_AUTO)
+    {
+      GFileInfo *info;
+      guint32 type;
+
+      info = g_file_query_info (file, G_FILE_ATTRIBUTE_STANDARD_TYPE, G_FILE_QUERY_INFO_NONE, NULL, &error);
+      if (!info)
+        goto err;
+
+      type = g_file_info_get_attribute_uint32 (info, G_FILE_ATTRIBUTE_STANDARD_TYPE);
+      watch_type = (type == G_FILE_TYPE_DIRECTORY) ? WATCH_DIR : WATCH_FILE;
+    }
+
+  if (watch_type == WATCH_DIR)
+    monitor = g_file_monitor_directory (file, flags, NULL, &error);
+  else
+    monitor = g_file_monitor (file, flags, NULL, &error);
+
+  if (!monitor)
+    goto err;
+
+  if (connect_handler)
+    g_signal_connect (monitor, "changed", G_CALLBACK (watch_callback), g_strdup (cmdline));
+
+  monitor = NULL; /* leak */
+
+  return TRUE;
+
+err:
+  g_printerr ("error: %s: %s", cmdline, error->message);
+  g_error_free (error);
+
+  return FALSE;
+}
+
+int
+handle_monitor (int argc, gchar *argv[], gboolean do_help)
+{
+  GOptionContext *context;
+  gchar *param;
+  GError *error = NULL;
+  GFileMonitorFlags flags;
+  guint total = 0;
+  guint i;
+
+  g_set_prgname ("gio monitor");
+
+  /* Translators: commandline placeholder */
+  param = g_strdup_printf ("[%s...]", _("LOCATION"));
+  context = g_option_context_new (param);
+  g_free (param);
+  g_option_context_set_help_enabled (context, FALSE);
+  g_option_context_set_summary (context,
+    _("Monitor files or directories for changes."));
+  g_option_context_add_main_entries (context, entries, GETTEXT_PACKAGE);
+
+  if (do_help)
+    {
+      show_help (context, NULL);
+      return 0;
+    }
+
+  if (!g_option_context_parse (context, &argc, &argv, &error))
+    {
+      show_help (context, error->message);
+      g_error_free (error);
+      return 1;
+    }
+
+  g_option_context_free (context);
+
+  flags = (no_moves ? 0 : G_FILE_MONITOR_WATCH_MOVES) |
+          (mounts ? G_FILE_MONITOR_WATCH_MOUNTS : 0);
+
+  if (watch_dirs)
+    {
+      for (i = 0; watch_dirs[i]; i++)
+        if (!add_watch (watch_dirs[i], WATCH_DIR, flags, TRUE))
+          return 1;
+      total++;
+    }
+
+  if (watch_files)
+    {
+      for (i = 0; watch_files[i]; i++)
+        if (!add_watch (watch_files[i], WATCH_FILE, flags, TRUE))
+          return 1;
+      total++;
+    }
+
+  if (watch_direct)
+    {
+      for (i = 0; watch_direct[i]; i++)
+        if (!add_watch (watch_direct[i], WATCH_FILE, flags | G_FILE_MONITOR_WATCH_HARD_LINKS, TRUE))
+          return 1;
+      total++;
+    }
+
+  if (watch_silent)
+    {
+      for (i = 0; watch_silent[i]; i++)
+        if (!add_watch (watch_silent[i], WATCH_FILE, flags | G_FILE_MONITOR_WATCH_HARD_LINKS, FALSE))
+          return 1;
+      total++;
+    }
+
+  if (watch_default)
+    {
+      for (i = 0; watch_default[i]; i++)
+        if (!add_watch (watch_default[i], WATCH_AUTO, flags, TRUE))
+          return 1;
+      total++;
+    }
+
+  if (!total)
+    {
+      g_printerr ("gio: Must give at least one file to monitor\n");
+      return 1;
+    }
+
+  while (TRUE)
+    g_main_context_iteration (NULL, TRUE);
+
+  return 0;
+}