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/*------------------------------------------------------------------------
* Copyright 2007-2010 (c) Jeff Brown <spadix@users.sourceforge.net>
*
* This file is part of the ZBar Bar Code Reader.
*
* The ZBar Bar Code Reader is free software; you can redistribute it
* and/or modify it under the terms of the GNU Lesser Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* The ZBar Bar Code Reader 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 Public License for more details.
*
* You should have received a copy of the GNU Lesser Public License
* along with the ZBar Bar Code Reader; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* http://sourceforge.net/projects/zbar
*------------------------------------------------------------------------*/
#include "error.h"
#include <string.h>
int _zbar_verbosity = 0;
static const char *const sev_str[] = { "FATAL ERROR", "ERROR", "OK", "WARNING",
"NOTE" };
#define SEV_MAX (strlen(sev_str[0]))
static const char *const mod_str[] = { "processor", "video", "window",
"image scanner", "<unknown>" };
#define MOD_MAX (strlen(mod_str[ZBAR_MOD_IMAGE_SCANNER]))
static const char *const err_str[] = {
"no error", /* OK */
"out of memory", /* NOMEM */
"internal library error", /* INTERNAL */
"unsupported request", /* UNSUPPORTED */
"invalid request", /* INVALID */
"system error", /* SYSTEM */
"locking error", /* LOCKING */
"all resources busy", /* BUSY */
"X11 display error", /* XDISPLAY */
"X11 protocol error", /* XPROTO */
"output window is closed", /* CLOSED */
"windows system error", /* WINAPI */
"unknown error" /* NUM */
};
#define ERR_MAX (strlen(err_str[ZBAR_ERR_CLOSED]))
int zbar_version(unsigned *major, unsigned *minor, unsigned *patch)
{
if (major)
*major = ZBAR_VERSION_MAJOR;
if (minor)
*minor = ZBAR_VERSION_MINOR;
if (patch)
*patch = ZBAR_VERSION_PATCH;
return (0);
}
void zbar_set_verbosity(int level)
{
_zbar_verbosity = level;
}
void zbar_increase_verbosity()
{
if (!_zbar_verbosity)
_zbar_verbosity++;
else
_zbar_verbosity <<= 1;
}
int _zbar_error_spew(const void *container, int verbosity)
{
const errinfo_t *err = container;
assert(err->magic == ERRINFO_MAGIC);
fprintf(stderr, "%s", _zbar_error_string(err, verbosity));
return (-err->sev);
}
zbar_error_t _zbar_get_error_code(const void *container)
{
const errinfo_t *err = container;
assert(err->magic == ERRINFO_MAGIC);
return (err->type);
}
/* ERROR: zbar video in v4l1_set_format():
* system error: blah[: blah]
*/
const char *_zbar_error_string(const void *container, int verbosity)
{
static const char basefmt[] = "%s: zbar %s in %s():\n %s: ";
errinfo_t *err = (errinfo_t *)container;
const char *sev, *mod, *func, *type;
int len;
assert(err->magic == ERRINFO_MAGIC);
if (err->sev >= SEV_FATAL && err->sev <= SEV_NOTE)
sev = sev_str[err->sev + 2];
else
sev = sev_str[1];
if (err->module >= ZBAR_MOD_PROCESSOR && err->module < ZBAR_MOD_UNKNOWN)
mod = mod_str[err->module];
else
mod = mod_str[ZBAR_MOD_UNKNOWN];
func = (err->func) ? err->func : "<unknown>";
if (err->type >= 0 && err->type < ZBAR_ERR_NUM)
type = err_str[err->type];
else
type = err_str[ZBAR_ERR_NUM];
len = SEV_MAX + MOD_MAX + ERR_MAX + strlen(func) + sizeof(basefmt);
err->buf = realloc(err->buf, len);
len = sprintf(err->buf, basefmt, sev, mod, func, type);
if (len <= 0)
return ("<unknown>");
if (err->detail) {
int newlen = len + strlen(err->detail) + 1;
if (strstr(err->detail, "%s")) {
if (!err->arg_str)
err->arg_str = strdup("<?>");
err->buf = realloc(err->buf, newlen + strlen(err->arg_str));
len += sprintf(err->buf + len, err->detail, err->arg_str);
} else if (strstr(err->detail, "%d") || strstr(err->detail, "%x")) {
err->buf = realloc(err->buf, newlen + 32);
len += sprintf(err->buf + len, err->detail, err->arg_int);
} else {
err->buf = realloc(err->buf, newlen);
len += sprintf(err->buf + len, "%s", err->detail);
}
if (len <= 0)
return ("<unknown>");
}
#ifdef HAVE_ERRNO_H
if (err->type == ZBAR_ERR_SYSTEM) {
static const char sysfmt[] = ": %s (%d)\n";
const char *syserr = strerror(err->errnum);
err->buf = realloc(err->buf, len + strlen(sysfmt) + strlen(syserr));
len += sprintf(err->buf + len, sysfmt, syserr, err->errnum);
}
#endif
#ifdef _WIN32
else if (err->type == ZBAR_ERR_WINAPI) {
char *syserr = NULL;
if (FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, err->errnum, 0, (LPTSTR)&syserr, 1, NULL) &&
syserr) {
char sysfmt[] = ": %s (%d)\n";
err->buf = realloc(err->buf, len + strlen(sysfmt) + strlen(syserr));
len += sprintf(err->buf + len, sysfmt, syserr, err->errnum);
LocalFree(syserr);
}
}
#endif
else {
err->buf = realloc(err->buf, len + 2);
len += sprintf(err->buf + len, "\n");
}
return (err->buf);
}
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