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/*
* This file is part of the libsigrokdecode project.
*
* Copyright (C) 2013 Uwe Hermann <uwe@hermann-uwe.de>
*
* This program 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.
*
* This program 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 this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include "libsigrokdecode.h"
/**
* @file
*
* Error handling in libsigrokdecode.
*/
/**
* @defgroup grp_error Error handling
*
* Error handling in libsigrokdecode.
*
* libsigrokdecode functions usually return @ref SRD_OK upon success, or a
* negative error code on failure.
*
* @{
*/
/**
* Return a human-readable error string for the given libsigrokdecode error
* code.
*
* @param error_code A libsigrokdecode error code number, such as
* SRD_ERR_MALLOC.
*
* @return A const string containing a short, human-readable (English)
* description of the error, such as "memory allocation error".
* The string must NOT be free'd by the caller!
*
* @see srd_strerror_name
*
* @since 0.2.0
*/
SRD_API const char *srd_strerror(int error_code)
{
const char *str;
/*
* Note: All defined SRD_* error macros from libsigrokdecode.h must
* have an entry in this function, as well as in srd_strerror_name().
*/
switch (error_code) {
case SRD_OK:
str = "no error";
break;
case SRD_ERR:
str = "generic/unspecified error";
break;
case SRD_ERR_MALLOC:
str = "memory allocation error";
break;
case SRD_ERR_ARG:
str = "invalid argument";
break;
case SRD_ERR_BUG:
str = "internal error";
break;
case SRD_ERR_PYTHON:
str = "Python API error";
break;
case SRD_ERR_DECODERS_DIR:
str = "decoders directory access error";
break;
default:
str = "unknown error";
break;
}
return str;
}
/**
* Return the "name" string of the given libsigrokdecode error code.
*
* For example, the "name" of the SRD_ERR_MALLOC error code is
* "SRD_ERR_MALLOC", the name of the SRD_OK code is "SRD_OK", and so on.
*
* This function can be used for various purposes where the "name" string of
* a libsigrokdecode error code is useful.
*
* @param error_code A libsigrokdecode error code number, such as
* SRD_ERR_MALLOC.
*
* @return A const string containing the "name" of the error code as string.
* The string must NOT be free'd by the caller!
*
* @see srd_strerror
*
* @since 0.2.0
*/
SRD_API const char *srd_strerror_name(int error_code)
{
const char *str;
/*
* Note: All defined SRD_* error macros from libsigrokdecode.h must
* have an entry in this function, as well as in srd_strerror().
*/
switch (error_code) {
case SRD_OK:
str = "SRD_OK";
break;
case SRD_ERR:
str = "SRD_ERR";
break;
case SRD_ERR_MALLOC:
str = "SRD_ERR_MALLOC";
break;
case SRD_ERR_ARG:
str = "SRD_ERR_ARG";
break;
case SRD_ERR_BUG:
str = "SRD_ERR_BUG";
break;
case SRD_ERR_PYTHON:
str = "SRD_ERR_PYTHON";
break;
case SRD_ERR_DECODERS_DIR:
str = "SRD_ERR_DECODERS_DIR";
break;
default:
str = "unknown error code";
break;
}
return str;
}
/** @} */
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