1
/* Copyright (C) 2000 MySQL AB
3
This program is free software; you can redistribute it and/or modify
4
it under the terms of the GNU General Public License as published by
5
the Free Software Foundation; version 2 of the License.
7
This program is distributed in the hope that it will be useful,
8
but WITHOUT ANY WARRANTY; without even the implied warranty of
9
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10
GNU General Public License for more details.
12
You should have received a copy of the GNU General Public License
13
along with this program; if not, write to the Free Software
14
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
16
#include "mysys_priv.h"
17
#include "mysys_err.h"
18
#include <mystrings/m_string.h>
19
#include <mystrings/m_ctype.h>
20
#include <drizzled/gettext.h>
24
/* Define some external variables for error handling */
28
my_error family functions have to be used according following rules:
29
- if message have not parameters use my_message(ER_CODE, ER(ER_CODE), MYF(N))
30
- if message registered use my_error(ER_CODE, MYF(N), ...).
31
- With some special text of errror message use:
32
my_printf_error(ER_CODE, format, MYF(N), ...)
35
char errbuff[NRERRBUFFS][ERRMSGSIZE];
38
Message texts are registered into a linked list of 'my_err_head' structs.
39
Each struct contains (1.) an array of pointers to C character strings with
40
'\0' termination, (2.) the error number for the first message in the array
41
(array index 0) and (3.) the error number for the last message in the array
42
(array index (last - first)).
43
The array may contain gaps with NULL pointers and pointers to empty strings.
44
Both kinds of gaps will be translated to "Unknown error %d.", if my_error()
45
is called with a respective error number.
46
The list of header structs is sorted in increasing order of error numbers.
47
Negative error numbers are allowed. Overlap of error numbers is not allowed.
48
Not registered error numbers will be translated to "Unknown error %d.".
50
static struct my_err_head
52
struct my_err_head *meh_next; /* chain link */
53
const char **meh_errmsgs; /* error messages array */
54
int meh_first; /* error number matching array slot 0 */
55
int meh_last; /* error number matching last slot */
57
} my_errmsgs_globerrs = {NULL, globerrs, EE_ERROR_FIRST, EE_ERROR_LAST, true};
59
static struct my_err_head *my_errmsgs_list= &my_errmsgs_globerrs;
72
void my_error(int nr, myf MyFlags, ...)
75
struct my_err_head *meh_p;
77
char ebuff[ERRMSGSIZE + 20];
79
/* Search for the error messages array, which could contain the message. */
80
for (meh_p= my_errmsgs_list; meh_p; meh_p= meh_p->meh_next)
81
if (nr <= meh_p->meh_last)
84
/* get the error message string. Default, if NULL or empty string (""). */
85
if (! (format= (meh_p && (nr >= meh_p->meh_first)) ?
86
_(meh_p->meh_errmsgs[nr - meh_p->meh_first]) : NULL) || ! *format)
87
(void) snprintf (ebuff, sizeof(ebuff), _("Unknown error %d"), nr);
90
va_start(args,MyFlags);
91
(void) vsnprintf (ebuff, sizeof(ebuff), format, args);
94
(*error_handler_hook)(nr, ebuff, MyFlags);
110
void my_printf_error(uint32_t error, const char *format, myf MyFlags, ...)
113
char ebuff[ERRMSGSIZE+20];
115
va_start(args,MyFlags);
116
(void) vsnprintf (ebuff, sizeof(ebuff), format, args);
118
(*error_handler_hook)(error, ebuff, MyFlags);
123
Give message using error_handler_hook
132
void my_message(uint32_t error, const char *str, register myf MyFlags)
134
(*error_handler_hook)(error, str, MyFlags);
139
Register error messages for use with my_error().
143
errmsgs array of pointers to error messages
144
first error number of first message in the array
145
last error number of last message in the array
148
The pointer array is expected to contain addresses to NUL-terminated
149
C character strings. The array contains (last - first + 1) pointers.
150
NULL pointers and empty strings ("") are allowed. These will be mapped to
151
"Unknown error" when my_error() is called with a matching error number.
152
This function registers the error numbers 'first' to 'last'.
153
No overlapping with previously registered error numbers is allowed.
160
int my_error_register(const char **errmsgs, int first, int last)
162
struct my_err_head *meh_p;
163
struct my_err_head **search_meh_pp;
165
/* Allocate a new header structure. */
166
if (! (meh_p= (struct my_err_head*) my_malloc(sizeof(struct my_err_head),
169
meh_p->meh_errmsgs= errmsgs;
170
meh_p->meh_first= first;
171
meh_p->meh_last= last;
172
meh_p->is_globerrs= false;
174
/* Search for the right position in the list. */
175
for (search_meh_pp= &my_errmsgs_list;
177
search_meh_pp= &(*search_meh_pp)->meh_next)
179
if ((*search_meh_pp)->meh_last > first)
183
/* Error numbers must be unique. No overlapping is allowed. */
184
if (*search_meh_pp && ((*search_meh_pp)->meh_first <= last))
186
free((unsigned char*)meh_p);
190
/* Insert header into the chain. */
191
meh_p->meh_next= *search_meh_pp;
192
*search_meh_pp= meh_p;
198
Unregister formerly registered error messages.
201
my_error_unregister()
202
first error number of first message
203
last error number of last message
206
This function unregisters the error numbers 'first' to 'last'.
207
These must have been previously registered by my_error_register().
208
'first' and 'last' must exactly match the registration.
209
If a matching registration is present, the header is removed from the
210
list and the pointer to the error messages pointers array is returned.
211
Otherwise, NULL is returned.
214
non-NULL OK, returns address of error messages pointers array.
215
NULL Error, no such number range registered.
218
const char **my_error_unregister(int first, int last)
220
struct my_err_head *meh_p;
221
struct my_err_head **search_meh_pp;
222
const char **errmsgs;
224
/* Search for the registration in the list. */
225
for (search_meh_pp= &my_errmsgs_list;
227
search_meh_pp= &(*search_meh_pp)->meh_next)
229
if (((*search_meh_pp)->meh_first == first) &&
230
((*search_meh_pp)->meh_last == last))
233
if (! *search_meh_pp)
236
/* Remove header from the chain. */
237
meh_p= *search_meh_pp;
238
*search_meh_pp= meh_p->meh_next;
240
/* Save the return value and free the header. */
241
errmsgs= meh_p->meh_errmsgs;
242
bool is_globerrs= meh_p->is_globerrs;
244
free((unsigned char*) meh_p);
253
void my_error_unregister_all(void)
255
struct my_err_head *list, *next;
256
for (list= my_errmsgs_globerrs.meh_next; list; list= next)
258
next= list->meh_next;
259
free((unsigned char*) list);
261
my_errmsgs_list= &my_errmsgs_globerrs;