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#ifndef ABZ_ERROR_H
#define ABZ_ERROR_H
/*
* Copyright (c) Abraham vd Merwe <abz@blio.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of the author nor the names of other 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 REGENTS 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.
*/
/*
* Set error message. Once set, the message has to be cleared before
* another abz_set_error() will change the error message.
*/
extern void abz_set_error (const char *fmt, ...)
__attribute__ ((format (printf,1,2)));
/*
* Append and error message. If an error already exist, a newline will be
* inserted between the two error messages. The usual rule of set-once-clear
* does not apply here (i.e. if you call this consecutive times, the error
* message will span multiple lines).
*/
extern void abz_cat_error (const char *fmt, ...)
__attribute__ ((format (printf,1,2)));
/*
* Return the first error message that was set since the last
* abz_clear_error() call. If no error exists (i.e.
* abz_set_error() was not called yet), it returns an
* empty string ("").
*/
extern const char *abz_get_error ();
/*
* Clear error.
*/
extern void abz_clear_error ();
#endif /* #ifndef ABZ_ERROR_H */
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