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/**********************************************************************
* $Id: e00error.c,v 1.7 2009-02-24 20:03:50 aboudreault Exp $
*
* Name: e00error.c
* Project: Compressed E00 Read/Write library
* Language: ANSI C
* Purpose: Error handling functions.
* Author: Daniel Morissette, dmorissette@mapgears.com
*
* $Log: e00error.c,v $
* Revision 1.7 2009-02-24 20:03:50 aboudreault
* Added a short manual pages (#1875)
* Updated documentation and code examples (#247)
*
* Revision 1.6 2005-09-17 14:22:05 daniel
* Switch to MIT license, update refs to website and email address, and
* prepare for 1.0.0 release.
*
* Revision 1.5 1999/01/08 17:38:19 daniel
* Changed E00Error argument "errno" to "nErrNo" to fix a warning with gcc
*
* Revision 1.4 1998/11/02 18:37:04 daniel
* New file header, and added E00ErrorReset()
*
* Revision 1.1 1998/10/29 13:26:00 daniel
* Initial revision
*
**********************************************************************
* Copyright (c) 1998-2005, Daniel Morissette
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
**********************************************************************/
#include <stdio.h>
#include <stdarg.h>
#include "e00compr.h"
/* static buffer to store the last error message. We'll assume that error
* messages cannot be longer than 2000 chars... which is quite reasonable
* (that's 25 lines of 80 chars!!!)
*/
static char gszE00LastErrMsg[2000] = "";
static int gnE00LastErrNo = 0;
static void (*gpfnE00ErrorHandler)(int, const char *) = NULL;
/**********************************************************************
* E00Error()
*
* This function records an error code and displays the error message
* to stderr.
*
* The error code can be accessed later using E00GetLastErrNo()
**********************************************************************/
void E00Error(int nErrNo, const char *pszFmt, ...)
{
va_list args;
gnE00LastErrNo = nErrNo;
/* Expand the error message
*/
va_start(args, pszFmt);
vsprintf(gszE00LastErrMsg, pszFmt, args);
va_end(args);
/* If the user provided his own error handling function, then call
* it, otherwise print the error to stderr and return.
*/
if (gpfnE00ErrorHandler != NULL)
{
gpfnE00ErrorHandler(nErrNo, gszE00LastErrMsg);
}
else
{
fprintf(stderr, "ERROR %d: %s\n", gnE00LastErrNo, gszE00LastErrMsg);
}
}
/**********************************************************************
* E00ErrorReset()
*
* Erase traces of previous errors.
**********************************************************************/
void E00ErrorReset()
{
gnE00LastErrNo = 0;
gszE00LastErrMsg[0] = '\0';
}
/**********************************************************************
* CPLGetLastErrorNo()
*
**********************************************************************/
int CPLGetLastErrorNo()
{
return gnE00LastErrNo;
}
/**********************************************************************
* E00GetLastErrorMsg()
*
**********************************************************************/
const char* E00GetLastErrorMsg()
{
return gszE00LastErrMsg;
}
/**********************************************************************
* E00SetErrorHandler()
*
* Let the library user specify his own error handler function.
*
* A valid error handler is a C function with the following prototype:
*
* void MyErrorHandler(int nErrNo, const char *pszMsg)
*
* Pass NULL to come back to the default behavior.
**********************************************************************/
void E00SetErrorHandler(void (*pfnErrorHandler)(int, const char *))
{
gpfnE00ErrorHandler = pfnErrorHandler;
}
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