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/*
* Copyright (c) 2010 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Portions Copyright (c) 2010 Apple Inc. 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 Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE 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.
*/
#include "baselocl.h"
struct heim_error {
int error_code;
heim_string_t msg;
struct heim_error *next;
};
static void
error_dealloc(void *ptr)
{
struct heim_error *p = ptr;
heim_release(p->msg);
heim_release(p->next);
}
static int
error_cmp(void *a, void *b)
{
struct heim_error *ap = a, *bp = b;
if (ap->error_code == ap->error_code)
return ap->error_code - ap->error_code;
return heim_cmp(ap->msg, bp->msg);
}
static unsigned long
error_hash(void *ptr)
{
struct heim_error *p = ptr;
return p->error_code;
}
struct heim_type_data _heim_error_object = {
HEIM_TID_ERROR,
"error-object",
NULL,
error_dealloc,
NULL,
error_cmp,
error_hash,
NULL
};
heim_error_t
heim_error_enomem(void)
{
/* This is an immediate object; see heim_number_create() */
return (heim_error_t)heim_number_create(ENOMEM);
}
heim_error_t
heim_error_create(int error_code, const char *fmt, ...)
{
heim_error_t e;
va_list ap;
va_start(ap, fmt);
e = heim_error_createv(error_code, fmt, ap);
va_end(ap);
return e;
}
heim_error_t
heim_error_createv(int error_code, const char *fmt, va_list ap)
{
heim_error_t e;
char *str;
int len;
int save_errno = errno;
str = malloc(1024);
errno = save_errno;
if (str == NULL)
return heim_error_enomem();
len = vsnprintf(str, 1024, fmt, ap);
errno = save_errno;
if (len < 0) {
free(str);
return NULL; /* XXX We should have a special heim_error_t for this */
}
e = _heim_alloc_object(&_heim_error_object, sizeof(struct heim_error));
if (e) {
e->msg = heim_string_create(str);
e->error_code = error_code;
}
free(str);
errno = save_errno;
return e;
}
heim_string_t
heim_error_copy_string(heim_error_t error)
{
if (heim_get_tid(error) != HEIM_TID_ERROR) {
if (heim_get_tid(error) == heim_number_get_type_id())
return __heim_string_constant(strerror(heim_number_get_int((heim_number_t)error)));
heim_abort("invalid heim_error_t");
}
/* XXX concat all strings */
return heim_retain(error->msg);
}
int
heim_error_get_code(heim_error_t error)
{
if (heim_get_tid(error) != HEIM_TID_ERROR) {
if (heim_get_tid(error) == heim_number_get_type_id())
return heim_number_get_int((heim_number_t)error);
heim_abort("invalid heim_error_t");
}
return error->error_code;
}
heim_error_t
heim_error_append(heim_error_t top, heim_error_t append)
{
if (heim_get_tid(top) != HEIM_TID_ERROR) {
if (heim_get_tid(top) == heim_number_get_type_id())
return top;
heim_abort("invalid heim_error_t");
}
if (top->next)
heim_release(top->next);
top->next = heim_retain(append);
return top;
}
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