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/* vim: set sw=2 ts=2 sts=2 et: */
/* -*- Mode: C; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* autoar-common.c
* Some common functions used in several classes of autoarchive
* This file does NOT declare any new classes!
*
* Copyright (C) 2013 Ting-Wei Lan
*
* This program 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 License, or (at your option) any later version.
*
* This program 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 program; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include "autoar-common.h"
#include <glib.h>
#include <gobject/gvaluecollector.h>
#include <string.h>
typedef struct _AutoarCommonSignalData AutoarCommonSignalData;
struct _AutoarCommonSignalData
{
GValue instance_and_params[3]; /* Maximum number of parameters + 1 */
gssize used_values; /* Number of GValues to be unset */
guint signal_id;
GQuark detail;
};
char*
autoar_common_get_filename_extension (const char *filename)
{
char *dot_location;
dot_location = strrchr (filename, '.');
if (dot_location == NULL || dot_location == filename) {
return (char*)filename;
}
if (dot_location - 4 > filename && strncmp (dot_location - 4, ".tar", 4) == 0)
dot_location -= 4;
else if (dot_location - 5 > filename && strncmp (dot_location - 5, ".cpio", 5) == 0)
dot_location -= 5;
return dot_location;
}
char*
autoar_common_get_basename_remove_extension (const char *filename)
{
char *dot_location;
char *basename;
if (filename == NULL) {
return NULL;
}
/* filename must not be directory, so we do not get a bad basename. */
basename = g_path_get_basename (filename);
dot_location = autoar_common_get_filename_extension (basename);
*dot_location = '\0';
g_debug ("_g_filename_basename_remove_extension: %s => %s",
filename,
basename);
return basename;
}
static void
autoar_common_signal_data_free (AutoarCommonSignalData *signal_data)
{
int i;
for (i = 0; i < signal_data->used_values; i++)
g_value_unset (signal_data->instance_and_params + i);
g_free (signal_data);
}
static gboolean
autoar_common_g_signal_emit_main_context (void *data)
{
AutoarCommonSignalData *signal_data = data;
g_signal_emitv (signal_data->instance_and_params,
signal_data->signal_id,
signal_data->detail,
NULL);
autoar_common_signal_data_free (signal_data);
return FALSE;
}
void
autoar_common_g_signal_emit (gboolean in_thread,
gpointer instance,
guint signal_id,
GQuark detail,
...)
{
va_list ap;
va_start (ap, detail);
if (in_thread) {
int i;
gchar *error;
GSignalQuery query;
AutoarCommonSignalData *data;
error = NULL;
data = g_new0 (AutoarCommonSignalData, 1);
data->signal_id = signal_id;
data->detail = detail;
data->used_values = 1;
g_value_init (data->instance_and_params, G_TYPE_FROM_INSTANCE (instance));
g_value_set_instance (data->instance_and_params, instance);
g_signal_query (signal_id, &query);
if (query.signal_id == 0) {
autoar_common_signal_data_free (data);
va_end (ap);
return;
}
for (i = 0; i < query.n_params; i++) {
G_VALUE_COLLECT_INIT (data->instance_and_params + i + 1,
query.param_types[i],
ap,
0,
&error);
if (error != NULL)
break;
data->used_values++;
}
if (error == NULL) {
g_main_context_invoke (NULL, autoar_common_g_signal_emit_main_context, data);
} else {
autoar_common_signal_data_free (data);
g_debug ("G_VALUE_COLLECT_INIT: Error: %s", error);
g_free (error);
va_end (ap);
return;
}
} else {
g_signal_emit_valist (instance, signal_id, detail, ap);
}
va_end (ap);
}
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