/*
   Copyright 2007 - 2008 MySQL AB, 2008 - 2009 Sun Microsystems, Inc.  All rights reserved.

   The MySQL Connector/C++ is licensed under the terms of the GPL
   <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most
   MySQL Connectors. There are special exceptions to the terms and
   conditions of the GPL as it is applied to this software, see the
   FLOSS License Exception
   <http://www.mysql.com/about/legal/licensing/foss-exception.html>.
*/

#include <stdlib.h>
#include <stdio.h>
#include <memory>
#include <stdarg.h>
#include <string.h>
#include "mysql_debug.h"

#define NON_WANTED_FUNCTIONS 	!strstr(func, "Closed") \
								&& !strstr(func, "Valid") \
								&& !strstr(func, "getMySQLHandle") \
								&& !strstr(func, "isBeforeFirstOrAfterLast")


namespace sql
{
namespace mysql
{


/* {{{ MySQL_DebugEnterEvent::MySQL_DebugEnterEvent() -I- */
MySQL_DebugEnterEvent::MySQL_DebugEnterEvent(unsigned int l, const char * const f,
											 const char * const func_name,
											 const boost::shared_ptr< MySQL_DebugLogger > & logger_object)
  : line(l), file(f), func(func_name), logger(logger_object)
{
	if (logger) {
		if (NON_WANTED_FUNCTIONS) {
			logger->enter(this);
		}
	}
}
/* }}} */


/* {{{ MySQL_DebugEnterEvent::MySQL_DebugEnterEvent() -I- */
MySQL_DebugEnterEvent::~MySQL_DebugEnterEvent()
{
	if (logger) {
		if (NON_WANTED_FUNCTIONS) {
			logger->leave(this);
		}
	}
}
/* }}} */


/* {{{ MySQL_DebugLogger::MySQL_DebugLogger() -I- */
MySQL_DebugLogger::MySQL_DebugLogger()
  : tracing(NO_TRACE)
{
	// ToDo: On Win getenv() is not thread-safe !
	if (getenv("MYSQLCPPCONN_TRACE_ENABLED")) {
		tracing = NORMAL_TRACE;
	}
}
/* }}} */


/* {{{ MySQL_DebugLogger::~MySQL_DebugLogger() -I- */
MySQL_DebugLogger::~MySQL_DebugLogger()
{
	callStack.empty();
}
/* }}} */


/* {{{ MySQL_DebugLogger::disableTracing() -I- */
void
MySQL_DebugLogger::disableTracing()
{
	tracing = NO_TRACE;
}
/* }}} */


/* {{{ MySQL_DebugLogger::enableTracing() -I- */
void
MySQL_DebugLogger::enableTracing()
{
	tracing = NORMAL_TRACE;
}
/* }}} */


/* {{{ MySQL_DebugLogger::enter() -I- */
void
MySQL_DebugLogger::enter(const MySQL_DebugEnterEvent * event)
{
	if (tracing != NO_TRACE) {
		printf("#\t");
		for (unsigned int i = 0; i < callStack.size(); ++i) {
			printf("|  ");
		}
		printf(">%s\n", event->func);
	}
	callStack.push(event);
}
/* }}} */


/* {{{ MySQL_DebugLogger::isTracing() -I- */
bool
MySQL_DebugLogger::isTracing()
{
	return (tracing != NO_TRACE);
}
/* }}} */


/* {{{ MySQL_DebugLogger::leave() -I- */
void
MySQL_DebugLogger::leave(const MySQL_DebugEnterEvent * event)
{
	callStack.pop();
	if (tracing != NO_TRACE) {
		printf("#\t");
		for (unsigned int i = 0; i < callStack.size(); ++i) {
			printf("|  ");
		}
		printf("<%s\n", event->func);
	}
}
/* }}} */


/* {{{ MySQL_DebugLogger::log() -I- */
void
MySQL_DebugLogger::log(const char * const type, const char * const message)
{
	if (tracing == NO_TRACE) {
		return;
	}
	printf("#\t");
	for (unsigned int i = 0; i < callStack.size(); ++i) {
		printf("|  ");
	}
	printf("%s: ", type);
	printf("%s\n", message);
}
/* }}} */


/* {{{ MySQL_DebugLogger::log_va() -I- */
void
MySQL_DebugLogger::log_va(const char * const type, const char * const format, ...)
{
	if (tracing == NO_TRACE) {
		return;
	}
	va_list args;
	printf("#\t");
	for (unsigned int i = 0; i < callStack.size(); ++i) {
		printf("|  ");
	}
	printf("%s: ", type);
	va_start(args, format);
	vprintf(format, args);
	va_end(args);
	printf("\n");
}
/* }}} */

} /* namespace mysql */
} /* namespace sql */

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 * vim600: noet sw=4 ts=4 fdm=marker
 * vim<600: noet sw=4 ts=4
 */
