glib/gio/gio-tool-monitor.c

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/*
* Copyright 2015 Red Hat, Inc.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* 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 2.1 of the License, 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 doesnt 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, NULL },
G_OPTION_ENTRY_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 */
g_object_unref (file);
return TRUE;
err:
print_file_error (file, error->message);
g_error_free (error);
g_object_unref (file);
return FALSE;
}
int
handle_monitor (int argc, gchar *argv[], gboolean do_help)
{
GOptionContext *context;
gchar *param;
GError *error = NULL;
GFileMonitorFlags flags;
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);
g_option_context_free (context);
return 0;
}
if (!g_option_context_parse (context, &argc, &argv, &error))
{
show_help (context, error->message);
g_error_free (error);
g_option_context_free (context);
return 1;
}
if (!watch_dirs && !watch_files && !watch_direct && !watch_silent && !watch_default)
{
show_help (context, _("No locations given"));
g_option_context_free (context);
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;
}
if (watch_files)
{
for (i = 0; watch_files[i]; i++)
if (!add_watch (watch_files[i], WATCH_FILE, flags, TRUE))
return 1;
}
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;
}
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;
}
if (watch_default)
{
for (i = 0; watch_default[i]; i++)
if (!add_watch (watch_default[i], WATCH_AUTO, flags, TRUE))
return 1;
}
while (TRUE)
g_main_context_iteration (NULL, TRUE);
return 0;
}