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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set et sw=2 ts=2: */
/***************************************************************************
* hugin.h
*
* Thu Nov 1 13:38:47 CET 2012
* Copyright 2012 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of Hugin.
*
* Hugin 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.
*
* Hugin 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 Hugin; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#ifndef __HUGIN_HUGIN_H__
#define __HUGIN_HUGIN_H__
typedef enum {
HUG_STATUS_OK = 0,
HUG_STATUS_UNKNOWN_OPTION,
HUG_STATUS_ERROR,
} hug_status_t;
#ifdef DISABLE_HUGIN
#define ERR(ch, fmt...)
#define WARN(ch, fmt...)
#define INFO(ch, fmt...)
#define DEBUG(ch, fmt...)
#define hug_init(...) HUG_STATUS_OK
#define hug_close()
#else/*DISABLE_HUGIN*/
enum HUG_FLAG {
// Features
#ifdef WITH_HUG_THREAD
HUG_FLAG_USE_THREAD = 0x00000001,
#endif
#ifdef WITH_HUG_MUTEX
HUG_FLAG_USE_MUTEX = 0x00000002,
#endif
#ifdef WITH_HUG_FILTER
HUG_FLAG_USE_FILTER = 0x00000004,
#endif
// Outputs
HUG_FLAG_OUTPUT_TO_STDOUT = 0x00010000,
HUG_FLAG_OUTPUT_TO_STDERR = 0x00020000,
HUG_FLAG_OUTPUT_TO_FD = 0x00040000,
HUG_FLAG_OUTPUT_TO_FILE = 0x00080000,
#ifdef WITH_HUG_SYSLOG
HUG_FLAG_OUTPUT_TO_SYSLOG = 0x00100000,
#endif
// Default value of flags
HUG_FLAG_DEFAULT = HUG_FLAG_OUTPUT_TO_STDOUT, // Output to stdout
};
enum HUG_OPTION {
/**
* No more options / last option. This is used
* to terminate the VARARGs list.
*/
HUG_OPTION_END,
/**
* const char* argument containing a filename which will be used for log
* output. To be used with the HUG_FLAG_OUTPUT_TO_FILE flag.
*/
HUG_OPTION_FILENAME,
/**
* Integer argument describing a file descriptor which will be used for log
* output. To be used with the HUG_FLAG_OUTPUT_TO_FD flag.
*/
HUG_OPTION_FD,
/**
* Set this option to make the stdout output to be printed without any date
* information in the header.
* Parameter is an integer.
* Values:
* 0 := use date
* 1 := do not use date.
*/
HUG_OPTION_STDOUT_NO_DATE,
/**
* Host and port to use when logging on an external server.
* Host is a const char* argument, port is an integer.
* To be used with the HUG_FLAG_USE_SYSLOG flag.
* Linux: If HUG_OPTION_SYSLOG_HOST is not supplied, the local syslog will be
* used.
* Windows: If HUG_OPTION_SYSLOG_HOST is not supplied an error will be
* returned by hugin_init.
* If HUG_OPTION_SYSLOG_PORT is not supplied, the default syslogd port will
* be used (port 514).
*/
#ifdef WITH_HUG_SYSLOG
HUG_OPTION_SYSLOG_HOST,
HUG_OPTION_SYSLOG_PORT,
#endif
/**
* Filter option. Argument is a const char *.
* fmt := [set[,set]*]*
* set := [+-]channel
* | class[+-]channel
* | [+-]all
*/
#ifdef WITH_HUG_FILTER
HUG_OPTION_FILTER,
#endif
};
/**
* @param flags combination of HUG_FLAG values
* @param ... list of options (type-value pairs,
* terminated with HUG_OPTION_END).
* @return HUG_STATUS_OK on success, 1 on error.
*/
hug_status_t hug_init(unsigned int flags, ...);
void hug_close();
/**
* Use this function if hugin is logging to a file and this file has just been
* rotated. Hugin will then close the filedescriptor to the file and open
* the a new file with the same name and location.
* Be aware that logrotate might need to create this new file first with
* the correct permissions in order for hugin to write to it.
* @return 0 on success. HUG_STATUS_ERROR on error (cannot open file).
*/
hug_status_t hugin_reopen_log();
/**
* Example of usage (use mutex protected calls, send output to file):
*
* hug_status_t status;
* status = hugin_init(HUG_FLAG_OUTPUT_TO_FILE | HUG_FLAG_USE_MUTEX,
* HUG_OPTION_FILENAME, "/tmp/my.log",
HUG_OPTION_END);
* if(status != HUG_STATUS_OK) exit(1);
* INFO(example, "We are up and running\n");
* hug_close();
*/
/**
* Example of usage (simply outputs to stdout):
*
* INFO(example, "We are up and running\n");
*/
enum __debug_class
{
__class_fixme = 0,
__class_err = 1,
__class_warn = 2,
__class_info = 3,
__class_debug = 4
};
int __debug(const char *func, const int line, enum __debug_class cl,
const char *ch, const char *fmt, ...)
__attribute__((format (printf,5,6)));
#define __DEBUG_PRINT(cl, ch, fmt...) \
do { __debug(__func__, __LINE__, cl, ch, fmt); } while(0)
#define __DEBUG(cl, ch, fmt...) \
__DEBUG_PRINT(__class##cl, #ch, fmt)
#define ERR(ch, fmt...) __DEBUG(_err, ch, fmt)
#define WARN(ch, fmt...) __DEBUG(_warn, ch, fmt)
#define INFO(ch, fmt...) __DEBUG(_info, ch, fmt)
#define DEBUG(ch, fmt...) __DEBUG(_debug, ch, fmt)
#endif/*DISABLE_HUGIN*/
#endif/*__HUGIN_HUGIN_H__*/
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