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
|
/**
Copyright (C) 1995, 1996 by Ke Jin <kejin@visigenic.com>
Enhanced for unixODBC (1999) by Peter Harvey <pharvey@codebydesign.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
**/
#include <config.h>
#include <herr.h>
#include "herr.ci"
typedef struct {
int code; /* sqlstat(if msg == null) or native code */
char* msg;
} err_t;
# define ERRSTACK_DEPTH 3
typedef struct {
err_t stack[ERRSTACK_DEPTH];
int top; /* top free slot */
} err_stack_t;
void* nnodbc_pusherr(void* stack, int code, char* msg)
{
err_stack_t* err_stack = stack;
if( ! err_stack )
{
err_stack = (err_stack_t*)MEM_ALLOC( sizeof(err_stack_t));
if( ! err_stack )
return 0;
err_stack->top = 0;
}
if( err_stack->top < ERRSTACK_DEPTH - 1)
err_stack->top ++;
(err_stack->stack)[err_stack->top - 1].code = code;
(err_stack->stack)[err_stack->top - 1].msg = msg;
return err_stack;
}
int nnodbc_errstkempty(void* stack)
{
err_stack_t* err_stack = stack;
if( ! err_stack
|| ! err_stack->top )
return 1;
return 0;
}
void nnodbc_errstkunset(void* stack)
{
if( stack )
((err_stack_t*)stack)->top = 0;
}
void nnodbc_poperr(void* stack )
{
err_stack_t* err_stack = stack;
if( ! nnodbc_errstkempty( err_stack ) )
err_stack->top --;
return;
}
static int is_sqlerr(err_t* err)
{
return !(err->msg);
}
int nnodbc_getsqlstatcode(void* stack)
{
err_stack_t* err_stack = stack;
err_t* err;
err = err_stack->stack + err_stack->top - 1;
if( ! is_sqlerr(err) )
return 0;
return err->code;
}
char* nnodbc_getsqlstatstr(void* stack)
{
err_stack_t* err_stack = stack;
err_t* err;
int i;
err = err_stack->stack + err_stack->top - 1;
if( ! is_sqlerr(err) )
return 0;
for(i=0;sqlerrmsg_tab[i].stat;i++)
{
if( sqlerrmsg_tab[i].code == err->code )
return sqlerrmsg_tab[i].stat;
}
return 0;
}
char* nnodbc_getsqlstatmsg(void* stack)
{
err_stack_t* err_stack = stack;
err_t* err;
int i;
err = err_stack->stack + err_stack->top - 1;
if( ! is_sqlerr(err) )
return 0;
for(i=0;sqlerrmsg_tab[i].stat;i++)
{
if( sqlerrmsg_tab[i].code == err->code )
return sqlerrmsg_tab[i].msg;
}
return 0;
}
int nnodbc_getnativcode(void* stack)
{
err_stack_t* err_stack = stack;
err_t* err;
err = err_stack->stack + err_stack->top - 1;
if( is_sqlerr(err) )
return 0;
return err->code;
}
char* nnodbc_getnativemsg(void* stack)
{
err_stack_t* err_stack = stack;
err_t* err;
err = err_stack->stack + err_stack->top - 1;
return err->msg;
}
void* nnodbc_clearerr(void* stack)
{
MEM_FREE(stack);
return 0;
}
|
