1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
/*------------------------------------------------------------------------
* 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
*------------------------------------------------------------------------*/
#ifndef _ERROR_H_
#define _ERROR_H_
#include "config.h"
#ifdef HAVE_INTTYPES_H
#include <inttypes.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#include <assert.h>
#include <zbar.h>
#ifdef _WIN32
#include <windows.h>
#endif
#if __STDC_VERSION__ < 199901L
#if __GNUC__ >= 2
#define __func__ __FUNCTION__
#else
#define __func__ "<unknown>"
#endif
#endif
#define ERRINFO_MAGIC (0x5252457a) /* "zERR" (LE) */
typedef enum errsev_e
{
SEV_FATAL = -2, /* application must terminate */
SEV_ERROR = -1, /* might be able to recover and continue */
SEV_OK = 0,
SEV_WARNING = 1, /* unexpected condition */
SEV_NOTE = 2, /* fyi */
} errsev_t;
typedef enum errmodule_e
{
ZBAR_MOD_PROCESSOR,
ZBAR_MOD_VIDEO,
ZBAR_MOD_WINDOW,
ZBAR_MOD_IMAGE_SCANNER,
ZBAR_MOD_UNKNOWN,
} errmodule_t;
typedef struct errinfo_s {
uint32_t magic; /* just in case */
errmodule_t module; /* reporting module */
char *buf; /* formatted and passed to application */
int errnum; /* errno for system errors */
errsev_t sev;
zbar_error_t type;
const char *func; /* reporting function */
const char *detail; /* description */
char *arg_str; /* single string argument */
int arg_int; /* single integer argument */
} errinfo_t;
extern int _zbar_verbosity;
/* FIXME don't we need varargs hacks here? */
#ifdef _WIN32
#define ZFLUSH fflush(stderr);
#else
#define ZFLUSH
#endif
#ifdef ZNO_MESSAGES
#ifdef __GNUC__
/* older versions of gcc (< 2.95) require a named varargs parameter */
#define zprintf(args...)
#else
/* unfortunately named vararg parameter is a gcc-specific extension */
#define zprintf(...)
#endif
#else
#ifdef __GNUC__
#define zprintf(level, format, args...) \
do { \
if (_zbar_verbosity >= level) { \
fprintf(stderr, "%s: " format, __func__, ##args); \
ZFLUSH \
} \
} while (0)
#define zwprintf(level, format, args...) \
do { \
if (_zbar_verbosity >= level) { \
fprintf(stderr, "%s: ", __func__); \
fwprintf(stderr, format, ##args); \
ZFLUSH \
} \
} while (0)
#else
#define zprintf(level, format, ...) \
do { \
if (_zbar_verbosity >= level) { \
fprintf(stderr, "%s: " format, __func__, ##__VA_ARGS__); \
ZFLUSH \
} \
} while (0)
#define zwprintf(level, format, ...) \
do { \
if (_zbar_verbosity >= level) { \
fprintf(stderr, "%s: ", __func__); \
fwprintf(stderr, format, ##__VA_ARGS__); \
ZFLUSH \
} \
} while (0)
#endif
#endif
static inline int err_copy(void *dst_c, void *src_c)
{
errinfo_t *dst = dst_c;
errinfo_t *src = src_c;
assert(dst->magic == ERRINFO_MAGIC);
assert(src->magic == ERRINFO_MAGIC);
dst->errnum = src->errnum;
dst->sev = src->sev;
dst->type = src->type;
dst->func = src->func;
dst->detail = src->detail;
dst->arg_str = src->arg_str;
src->arg_str = NULL; /* unused at src, avoid double free */
dst->arg_int = src->arg_int;
return (-1);
}
static inline int err_capture(const void *container, errsev_t sev,
zbar_error_t type, const char *func,
const char *detail)
{
errinfo_t *err = (errinfo_t *)container;
assert(err->magic == ERRINFO_MAGIC);
#ifdef HAVE_ERRNO_H
if (type == ZBAR_ERR_SYSTEM)
err->errnum = errno;
#endif
#ifdef _WIN32
if (type == ZBAR_ERR_WINAPI)
err->errnum = GetLastError();
#endif
err->sev = sev;
err->type = type;
err->func = func;
err->detail = detail;
if (_zbar_verbosity >= 1)
_zbar_error_spew(err, 0);
return (-1);
}
static inline int err_capture_str(const void *container, errsev_t sev,
zbar_error_t type, const char *func,
const char *detail, const char *arg)
{
errinfo_t *err = (errinfo_t *)container;
assert(err->magic == ERRINFO_MAGIC);
if (err->arg_str)
free(err->arg_str);
err->arg_str = strdup(arg);
return (err_capture(container, sev, type, func, detail));
}
static inline int err_capture_int(const void *container, errsev_t sev,
zbar_error_t type, const char *func,
const char *detail, int arg)
{
errinfo_t *err = (errinfo_t *)container;
assert(err->magic == ERRINFO_MAGIC);
err->arg_int = arg;
return (err_capture(container, sev, type, func, detail));
}
static inline int err_capture_num(const void *container, errsev_t sev,
zbar_error_t type, const char *func,
const char *detail, int num)
{
errinfo_t *err = (errinfo_t *)container;
assert(err->magic == ERRINFO_MAGIC);
err->errnum = num;
return (err_capture(container, sev, type, func, detail));
}
static inline void err_init(errinfo_t *err, errmodule_t module)
{
err->magic = ERRINFO_MAGIC;
err->module = module;
}
static inline void err_cleanup(errinfo_t *err)
{
assert(err->magic == ERRINFO_MAGIC);
if (err->buf) {
free(err->buf);
err->buf = NULL;
}
if (err->arg_str) {
free(err->arg_str);
err->arg_str = NULL;
}
}
#endif
|
