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/*
* Copyright 2013 MongoDB, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <stdarg.h>
#include "bson-compat.h"
#include "bson-config.h"
#include "bson-error.h"
#include "bson-memory.h"
#include "bson-string.h"
#include "bson-types.h"
/*
*--------------------------------------------------------------------------
*
* bson_set_error --
*
* Initializes @error using the parameters specified.
*
* @domain is an application specific error domain which should
* describe which module initiated the error. Think of this as the
* exception type.
*
* @code is the @domain specific error code.
*
* @format is used to generate the format string. It uses vsnprintf()
* internally so the format should match what you would use there.
*
* Parameters:
* @error: A #bson_error_t.
* @domain: The error domain.
* @code: The error code.
* @format: A printf style format string.
*
* Returns:
* None.
*
* Side effects:
* @error is initialized.
*
*--------------------------------------------------------------------------
*/
void
bson_set_error (bson_error_t *error, /* OUT */
uint32_t domain, /* IN */
uint32_t code, /* IN */
const char *format, /* IN */
...) /* IN */
{
va_list args;
if (error) {
error->domain = domain;
error->code = code;
va_start (args, format);
bson_vsnprintf (error->message, sizeof error->message, format, args);
va_end (args);
error->message[sizeof error->message - 1] = '\0';
}
}
/*
*--------------------------------------------------------------------------
*
* bson_strerror_r --
*
* This is a reentrant safe macro for strerror.
*
* The resulting string may be stored in @buf.
*
* Returns:
* A pointer to a static string or @buf.
*
* Side effects:
* None.
*
*--------------------------------------------------------------------------
*/
char *
bson_strerror_r (int err_code, /* IN */
char *buf, /* IN */
size_t buflen) /* IN */
{
static const char *unknown_msg = "Unknown error";
char *ret = NULL;
#if defined(_WIN32)
bson_strncpy (buf, strerror( err_code ), buflen);
ret = buf;
#elif defined(__GNUC__) && defined(_GNU_SOURCE)
ret = strerror_r (err_code, buf, buflen);
#else /* XSI strerror_r */
if (strerror_r (err_code, buf, buflen) == 0) {
ret = buf;
}
#endif
if (!ret) {
bson_strncpy (buf, unknown_msg, buflen);
ret = buf;
}
return ret;
}
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