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errors.c
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errors.c
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/* Copyright (c) 2012 Francis Russell <francis@unchartedbackwaters.co.uk>
*
* 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 "errors.h"
#include <string.h>
struct error_string
{
int code;
const char *message;
};
static struct error_string error_strings[] = {
{ LF_OK, "No error encountered." },
{ LF_INTERNAL_ERROR, "An internal error occured. Please report." },
{ LF_INVALID_WINDOW_SIZE, "Invalid checksum window size." },
{ LF_INVALID_COMMAND_LINE_OPTION, "Invalid command line option." }
};
void lf_strerror(const int status, char *const buffer, const size_t buffer_length)
{
if (LF_IS_SYS_ERROR(status))
{
strerror_r(LF_TO_SYS_ERROR(status), buffer, buffer_length);
}
else
{
for(size_t i=0; i < sizeof(error_strings) / sizeof(struct error_string); ++i)
{
if (error_strings[i].code == status)
{
strncpy(buffer, error_strings[i].message, buffer_length);
return;
}
}
strncpy(buffer, "An invalid or unhandled error code was encountered. Please report.", buffer_length);
}
}