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/**
*
* Copyright (c) 2010, Zed A. Shaw and Mongrel2 Project Contributors.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of the Mongrel2 Project, Zed A. Shaw, nor the names
* of its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __dbg_h__
#define __dbg_h__
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <stdarg.h>
void dbg_set_log(FILE *log_file);
FILE *dbg_get_log();
void fprintf_with_timestamp(FILE *log_file, const char *format, ...);
#ifdef NDEBUG
#define debug(M, ...)
#else
#define debug(M, ...) fprintf_with_timestamp(dbg_get_log(), "DEBUG %s:%d: " M "\n", __FILE__, __LINE__, ##__VA_ARGS__)
#endif
// do not try to be smart and make this go away on NDEBUG, the _debug
// here means that it just doesn't print a message, it still does the
// check. MKAY?
#define check_debug(A, M, ...) if(!(A)) { debug(M, ##__VA_ARGS__); errno=0; goto error; }
#define clean_errno() (errno == 0 ? "None" : strerror(errno))
#ifdef NO_LINENOS
// versions that don't feature line numbers
#define log_err(M, ...) fprintf_with_timestamp(dbg_get_log(), "[ERROR] (errno: %s) " M "\n", clean_errno(), ##__VA_ARGS__)
#define log_warn(M, ...) fprintf_with_timestamp(dbg_get_log(), "[WARN] (errno: %s) " M "\n", clean_errno(), ##__VA_ARGS__)
#define log_info(M, ...) fprintf_with_timestamp(dbg_get_log(), "[INFO] " M "\n", ##__VA_ARGS__)
#else
#define log_err(M, ...) fprintf_with_timestamp(dbg_get_log(), "[ERROR] (%s:%d: errno: %s) " M "\n", __FILE__, __LINE__, clean_errno(), ##__VA_ARGS__)
#define log_warn(M, ...) fprintf_with_timestamp(dbg_get_log(), "[WARN] (%s:%d: errno: %s) " M "\n", __FILE__, __LINE__, clean_errno(), ##__VA_ARGS__)
#define log_info(M, ...) fprintf_with_timestamp(dbg_get_log(), "[INFO] (%s:%d) " M "\n", __FILE__, __LINE__, ##__VA_ARGS__)
#endif
#define check(A, M, ...) if(!(A)) { log_err(M, ##__VA_ARGS__); errno=0; goto error; }
#define sentinel(M, ...) { log_err(M, ##__VA_ARGS__); errno=0; goto error; }
#define check_mem(A) check((A), "Out of memory.")
#define TRACE(C,E) debug("--> %s(%s:%d) %s:%d ", "" #C, State_event_name(E), E, __FUNCTION__, __LINE__)
#define error_response(F, C, M, ...) {Response_send_status(F, &HTTP_##C); sentinel(M, ##__VA_ARGS__);}
#define error_unless(T, F, C, M, ...) if(!(T)) error_response(F, C, M, ##__VA_ARGS__)
#endif
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