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|
/* vim:ts=8:sts=8:sw=4:noai:noexpandtab
*
* portable error reporting.
*
* Copyright (c) 2010 Miru Limited.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _WIN32
# include <netdb.h>
#endif
#include <impl/i18n.h>
#include <impl/framework.h>
//#define ERROR_DEBUG
#define ERROR_OVERWRITTEN_WARNING "pgm_error_t set over the top of a previous pgm_error_t or uninitialized memory.\n" \
"This indicates a bug. You must ensure an error is NULL before it's set.\n" \
"The overwriting error message was: %s"
static pgm_error_t* pgm_error_new_valist (const int, const int, const char*, va_list) PGM_GNUC_PRINTF(3, 0);
static void pgm_error_add_prefix (char**restrict, const char*restrict, va_list) PGM_GNUC_PRINTF(2, 0);
static
pgm_error_t*
pgm_error_new_valist (
const int error_domain,
const int error_code,
const char* format,
va_list args
)
{
pgm_error_t *error = pgm_new (pgm_error_t, 1);
error->domain = error_domain;
error->code = error_code;
error->message = pgm_strdup_vprintf (format, args);
return error;
}
void
pgm_error_free (
pgm_error_t* error
)
{
pgm_return_if_fail (error != NULL);
pgm_free (error->message);
pgm_free (error);
}
void
pgm_set_error (
pgm_error_t** restrict err,
const int error_domain,
const int error_code,
const char* restrict format,
...
)
{
pgm_error_t *new;
va_list args;
if (NULL == err)
return;
va_start (args, format);
new = pgm_error_new_valist (error_domain, error_code, format, args);
va_end (args);
if (NULL == *err)
*err = new;
else
pgm_warn (_(ERROR_OVERWRITTEN_WARNING), new->message);
}
void
pgm_propagate_error (
pgm_error_t** restrict dest,
pgm_error_t* restrict src
)
{
pgm_return_if_fail (src != NULL);
if (NULL == dest) {
if (src)
pgm_error_free (src);
return;
} else {
if (NULL != *dest) {
pgm_warn (_(ERROR_OVERWRITTEN_WARNING), src->message);
} else {
*dest = src;
}
}
}
void
pgm_clear_error (
pgm_error_t** err
)
{
if (err && *err) {
pgm_error_free (*err);
*err = NULL;
}
}
static
void
pgm_error_add_prefix (
char** restrict string,
const char* restrict format,
va_list ap
)
{
char* prefix = pgm_strdup_vprintf (format, ap);
char* oldstring = *string;
*string = pgm_strconcat (prefix, oldstring, NULL);
pgm_free (oldstring);
pgm_free (prefix);
}
void
pgm_prefix_error (
pgm_error_t** restrict err,
const char* restrict format,
...
)
{
if (err && *err) {
va_list ap;
va_start (ap, format);
pgm_error_add_prefix (&(*err)->message, format, ap);
va_end (ap);
}
}
/* error from libc.
*/
int
pgm_error_from_errno (
const int from_errno
)
{
switch (from_errno) {
#ifdef EAFNOSUPPORT
case EAFNOSUPPORT:
return PGM_ERROR_AFNOSUPPORT;
break;
#endif
#ifdef EAGAIN
case EAGAIN:
return PGM_ERROR_AGAIN;
break;
#endif
#ifdef EBADF
case EBADF:
return PGM_ERROR_BADF;
break;
#endif
#ifdef ECONNRESET
case ECONNRESET:
return PGM_ERROR_CONNRESET;
break;
#endif
#ifdef EFAULT
case EFAULT:
return PGM_ERROR_FAULT;
break;
#endif
#ifdef EINTR
case EINTR:
return PGM_ERROR_INTR;
break;
#endif
#ifdef EINVAL
case EINVAL:
return PGM_ERROR_INVAL;
break;
#endif
#ifdef EMFILE
case EMFILE:
return PGM_ERROR_MFILE;
break;
#endif
#ifdef ENFILE
case ENFILE:
return PGM_ERROR_NFILE;
break;
#endif
#ifdef ENODEV
case ENODEV:
return PGM_ERROR_NODEV;
break;
#endif
#ifdef ENOENT
case ENOENT:
return PGM_ERROR_NOENT;
break;
#endif
#ifdef ENOMEM
case ENOMEM:
return PGM_ERROR_NOMEM;
break;
#endif
#ifdef ENONET
case ENONET:
return PGM_ERROR_NONET;
break;
#endif
#ifdef ENOPROTOOPT
case ENOPROTOOPT:
return PGM_ERROR_NOPROTOOPT;
break;
#endif
#ifdef ENOTUNIQ
case ENOTUNIQ:
return PGM_ERROR_NOTUNIQ;
break;
#endif
#ifdef ENXIO
case ENXIO:
return PGM_ERROR_NXIO;
break;
#endif
#ifdef EPERM
case EPERM:
return PGM_ERROR_PERM;
break;
#endif
#ifdef EPROTO
case EPROTO:
return PGM_ERROR_PROTO;
break;
#endif
#ifdef ERANGE
case ERANGE:
return PGM_ERROR_RANGE;
break;
#endif
#ifdef EXDEV
case EXDEV:
return PGM_ERROR_XDEV;
break;
#endif
default :
return PGM_ERROR_FAILED;
break;
}
}
/* h_errno from gethostbyname.
*/
int
pgm_error_from_h_errno (
const int from_h_errno
)
{
switch (from_h_errno) {
#ifdef HOST_NOT_FOUND
case HOST_NOT_FOUND:
return PGM_ERROR_NONAME;
break;
#endif
#ifdef TRY_AGAIN
case TRY_AGAIN:
return PGM_ERROR_AGAIN;
break;
#endif
#ifdef NO_RECOVERY
case NO_RECOVERY:
return PGM_ERROR_FAIL;
break;
#endif
#ifdef NO_DATA
case NO_DATA:
return PGM_ERROR_NODATA;
break;
#endif
default:
return PGM_ERROR_FAILED;
break;
}
}
/* errno must be preserved before calling to catch correct error
* status with EAI_SYSTEM.
*/
int
pgm_error_from_eai_errno (
const int from_eai_errno,
#ifdef EAI_SYSTEM
const int from_errno
#else
PGM_GNUC_UNUSED const int from_errno
#endif
)
{
switch (from_eai_errno) {
#ifdef EAI_ADDRFAMILY
case EAI_ADDRFAMILY:
return PGM_ERROR_ADDRFAMILY;
break;
#endif
#ifdef EAI_AGAIN
case EAI_AGAIN:
return PGM_ERROR_AGAIN;
break;
#endif
#ifdef EAI_BADFLAGS
case EAI_BADFLAGS:
return PGM_ERROR_INVAL;
break;
#endif
#ifdef EAI_FAIL
case EAI_FAIL:
return PGM_ERROR_FAIL;
break;
#endif
#ifdef EAI_FAMILY
case EAI_FAMILY:
return PGM_ERROR_AFNOSUPPORT;
break;
#endif
#ifdef EAI_MEMORY
case EAI_MEMORY:
return PGM_ERROR_NOMEM;
break;
#endif
#ifdef EAI_NODATA
case EAI_NODATA:
return PGM_ERROR_NODATA;
break;
#endif
#if defined(EAI_NONAME) && EAI_NONAME != EAI_NODATA
case EAI_NONAME:
return PGM_ERROR_NONAME;
break;
#endif
#ifdef EAI_SERVICE
case EAI_SERVICE:
return PGM_ERROR_SERVICE;
break;
#endif
#ifdef EAI_SOCKTYPE
case EAI_SOCKTYPE:
return PGM_ERROR_SOCKTNOSUPPORT;
break;
#endif
#ifdef EAI_SYSTEM
case EAI_SYSTEM:
return pgm_error_from_errno (from_errno);
break;
#endif
default :
return PGM_ERROR_FAILED;
break;
}
}
/* from WSAGetLastError()
*/
int
pgm_error_from_wsa_errno (
const int from_wsa_errno
)
{
switch (from_wsa_errno) {
#ifdef WSAEINVAL
case WSAEINVAL:
return PGM_ERROR_INVAL;
break;
#endif
#ifdef WSAEMFILE
case WSAEMFILE:
return PGM_ERROR_MFILE;
break;
#endif
#ifdef WSA_NOT_ENOUGH_MEMORY
case WSA_NOT_ENOUGH_MEMORY:
return PGM_ERROR_NOMEM;
break;
#endif
#ifdef WSAENOPROTOOPT
case WSAENOPROTOOPT:
return PGM_ERROR_NOPROTOOPT;
break;
#endif
#ifdef WSAECONNRESET
case WSAECONNRESET:
return PGM_ERROR_CONNRESET;
break;
#endif
default :
return PGM_ERROR_FAILED;
break;
}
}
/* from Last-Error codes, i.e. Windows non-WinSock and non-DOS errors.
*/
int
pgm_error_from_win_errno (
const int from_win_errno
)
{
switch (from_win_errno) {
#ifdef ERROR_ADDRESS_NOT_ASSOCIATED
case ERROR_ADDRESS_NOT_ASSOCIATED:
return PGM_ERROR_NODATA;
break;
#endif
#ifdef ERROR_BUFFER_OVERFLOW
case ERROR_BUFFER_OVERFLOW:
return PGM_ERROR_NOBUFS;
break;
#endif
#ifdef ERROR_INVALID_DATA
case ERROR_INVALID_DATA:
return PGM_ERROR_BADE;
break;
#endif
#ifdef ERROR_INSUFFICIENT_BUFFER
case ERROR_INSUFFICIENT_BUFFER:
return PGM_ERROR_NOMEM;
break;
#endif
#ifdef ERROR_INVALID_PARAMETER
case ERROR_INVALID_PARAMETER:
return PGM_ERROR_INVAL;
break;
#endif
#ifdef ERROR_NOT_ENOUGH_MEMORY
case ERROR_NOT_ENOUGH_MEMORY:
return PGM_ERROR_NOMEM;
break;
#endif
#ifdef ERROR_NO_DATA
case ERROR_NO_DATA:
return PGM_ERROR_NODATA;
break;
#endif
#ifdef ERROR_NOT_SUPPORTED
case ERROR_NOT_SUPPORTED:
return PGM_ERROR_NOSYS;
break;
#endif
default :
return PGM_ERROR_FAILED;
break;
}
}
/* eof */
|
