/*
*
* 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) version 3.
*
* 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 the program; if not, see <http://www.gnu.org/licenses/>
*
*
* Authors:
* Srinivasa Ragavan <sragavan@gnome.org>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <glib.h>
#include <glib/gi18n.h>
#include <glib/gstdio.h>
#include "e-logger.h"
#include "e-mktemp.h"
/* 5 Minutes */
#define TIMEOUT_INTERVAL 300
#define E_LOGGER_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE \
((obj), E_TYPE_LOGGER, ELoggerPrivate))
struct _ELoggerPrivate {
gchar *component;
gchar *logfile;
FILE *fp;
guint timer;
};
enum {
PROP_0,
PROP_COMPONENT
};
static gpointer parent_class;
static gboolean
flush_logfile (ELogger *logger)
{
if (logger->priv->fp)
fflush (logger->priv->fp);
logger->priv->timer = 0;
return FALSE;
}
static void
logger_set_component (ELogger *logger,
const gchar *component)
{
gchar *temp;
g_return_if_fail (logger->priv->component == NULL);
temp = g_strdup_printf ("%s.log.XXXXXX", component);
logger->priv->component = g_strdup (component);
logger->priv->logfile = e_mktemp (temp);
logger->priv->fp = g_fopen (logger->priv->logfile, "w");
logger->priv->timer = 0;
if (!logger->priv->fp)
g_warning ("%s: Failed to open log file '%s' for writing.", G_STRFUNC, logger->priv->logfile ? logger->priv->logfile : "[null]");
g_free (temp);
}
static void
logger_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
switch (property_id) {
case PROP_COMPONENT:
logger_set_component (
E_LOGGER (object),
g_value_get_string (value));
return;
}
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
static void
logger_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
switch (property_id) {
case PROP_COMPONENT:
g_value_set_string (
value, e_logger_get_component (
E_LOGGER (object)));
return;
}
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
static void
logger_finalize (GObject *object)
{
ELogger *logger = E_LOGGER (object);
if (logger->priv->timer)
g_source_remove (logger->priv->timer);
flush_logfile (logger);
if (logger->priv->fp)
fclose (logger->priv->fp);
g_free (logger->priv->component);
g_free (logger->priv->logfile);
/* Chain up to parent's finalize() method. */
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
logger_class_init (ELoggerClass *class)
{
GObjectClass *object_class;
parent_class = g_type_class_peek_parent (class);
g_type_class_add_private (class, sizeof (ELoggerPrivate));
object_class = G_OBJECT_CLASS (class);
object_class->set_property = logger_set_property;
object_class->get_property = logger_get_property;
object_class->finalize = logger_finalize;
g_object_class_install_property (
object_class,
PROP_COMPONENT,
g_param_spec_string (
"component",
_("Component"),
_("Name of the component being logged"),
"anonymous",
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
}
static void
logger_init (ELogger *logger)
{
logger->priv = E_LOGGER_GET_PRIVATE (logger);
}
GType
e_logger_get_type (void)
{
static GType type = 0;
if (G_UNLIKELY (type == 0)) {
static const GTypeInfo type_info = {
sizeof (ELoggerClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) logger_class_init,
(GClassFinalizeFunc) NULL,
NULL, /* class_data */
sizeof (ELogger),
0, /* n_preallocs */
(GInstanceInitFunc) logger_init,
NULL /* value_table */
};
type = g_type_register_static (
G_TYPE_OBJECT, "ELogger", &type_info, 0);
}
return type;
}
ELogger *
e_logger_create (gchar *component)
{
g_return_val_if_fail (component != NULL, NULL);
return g_object_new (E_TYPE_LOGGER, "component", component, NULL);
}
const gchar *
e_logger_get_component (ELogger *logger)
{
g_return_val_if_fail (E_IS_LOGGER (logger), NULL);
return logger->priv->component;
}
static void
set_dirty (ELogger *logger)
{
if (logger->priv->timer)
return;
logger->priv->timer = g_timeout_add_seconds (
TIMEOUT_INTERVAL, (GSourceFunc) flush_logfile, logger);
}
void
e_logger_log (ELogger *logger,
gint level,
gchar *primary,
gchar *secondary)
{
time_t t = time (NULL);
g_return_if_fail (E_LOGGER (logger));
g_return_if_fail (primary != NULL);
g_return_if_fail (secondary != NULL);
if (!logger->priv->fp)
return;
fprintf (logger->priv->fp, "%d:%ld:%s\n", level, t, primary);
fprintf (logger->priv->fp, "%d:%ld:%s\n", level, t, secondary);
set_dirty (logger);
}
void
e_logger_get_logs (ELogger *logger,
ELogFunction func,
gpointer data)
{
FILE *fp;
gchar buf[250];
g_return_if_fail (E_LOGGER (logger));
g_return_if_fail (func != NULL);
/* Flush everything before we get the logs */
if (logger->priv->fp)
fflush (logger->priv->fp);
fp = g_fopen (logger->priv->logfile, "r");
if (!fp) {
g_warning ("%s: Cannot open log file '%s' for reading! No flush yet?\n", G_STRFUNC, logger->priv->logfile ? logger->priv->logfile : "[null]");
return;
}
while (!feof (fp)) {
gchar *tmp;
size_t len;
tmp = fgets (buf, sizeof (buf), fp);
if (!tmp)
break;
len = strlen (tmp);
if (len > 0 && tmp [len - 1] != '\n' && !feof (fp)) {
/* there are more characters on a row than 249, so read them all */
GString *str = g_string_sized_new (1024);
g_string_append (str, tmp);
while (!feof (fp) && len > 0 && tmp [len - 1] != '\n') {
tmp = fgets (buf, sizeof (buf), fp);
if (!tmp)
break;
len = strlen (tmp);
g_string_append (str, tmp);
}
func (str->str, data);
g_string_free (str, TRUE);
} else
func (tmp, data);
}
fclose (fp);
}
