* Makefile.am, logging.h, logging.c: Added a new logging module

to allow easy tracing of function calls and other events. It is
	only intended for debugging.

src/ChangeLog

@@ -4,6 +4,10 @@
 	in $(pkglibdir), to conform to the usual directory hierarchy
 	standards. Fixes #2796.
 
+	* Makefile.am, logging.h, logging.c: Added a new logging module
+	to allow easy tracing of function calls and other events. It is
+	only intended for debugging.
+
 2006-01-24  Jindrich Makovicka  <makovick@kmlinux.fjfi.cvut.cz>
 
 	* file.c (copy_file_file): In 'Reget' mode take into account

src/Makefile.am

@@ -52,7 +52,9 @@ SRCS =	achown.c achown.h background.c background.h boxes.c boxes.h	\
 	find.h findme.c	findme.h fs.h					\
 	glibcompat.c glibcompat.h global.h help.c help.h hotlist.c	\
 	hotlist.h info.c info.h key.c key.h keyxdef.c layout.c		\
-	layout.h learn.c learn.h listmode.c listmode.h main.c main.h	\
+	layout.h learn.c learn.h listmode.c listmode.h			\
+	logging.h logging.c						\
+	main.c main.h							\
 	menu.c menu.h mountlist.c mountlist.h mouse.c mouse.h myslang.h	\
 	option.c option.h panel.h panelize.c panelize.h poptalloca.h	\
 	popt.c poptconfig.c popt.h popthelp.c poptint.h poptparse.c	\

src/logging.c

@@ -0,0 +1,65 @@
+/*
+   Provides a log file to ease tracing the program.
+
+   Copyright (C) 2005 Roland Illig <roland.illig@gmx.de>.
+
+   This file is part of the Midnight Commander.
+
+   The Midnight Commander is free software; you can redistribute it
+   and/or modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The Midnight Commander 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
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA.
+ */
+
+#include <config.h>
+
+#include <stdarg.h>
+#include <stdio.h>
+
+#include "global.h"
+#include "logging.h"
+#include "setup.h"
+
+/*** file scope functions **********************************************/
+
+static gboolean
+logging_enabled(void)
+{
+	char *mc_ini;
+	gboolean retval;
+
+	mc_ini = g_strdup_printf("%s/%s", home_dir, PROFILE_NAME);
+	retval = get_int(mc_ini, "development.enable_logging", FALSE);
+	g_free(mc_ini);
+	return retval;
+}
+
+/*** public functions **************************************************/
+
+void
+mc_log(const char *fmt, ...)
+{
+	va_list args;
+	FILE *f;
+	char *logfilename;
+
+	if (logging_enabled) {
+		va_start(args, fmt);
+		logfilename = g_strdup_printf("%s/.mc/log", home_dir);
+		if ((f = fopen(logfilename, "a")) != NULL) {
+			(void)vfprintf(f, fmt, args);
+			(void)fclose(f);
+		}
+		g_free(logfilename);
+	}
+}

src/logging.h

@@ -0,0 +1,12 @@
+#ifndef MC_LOGGING_H
+#define MC_LOGGING_H
+
+/*
+   This file provides an easy-to-use function for writing all kinds of
+   events into a central log file that can be used for debugging.
+ */
+
+extern void mc_log(const char *, ...)
+	__attribute__((__format__(__printf__,1,2)));
+
+#endif