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
237
238
239
240
241
242
243
244
245
246
|
/*****************************************************************************
Copyright (c) 1994, 2014, Oracle and/or its affiliates. All Rights Reserved.
Copyright (c) 2017, 2019, MariaDB Corporation.
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; version 2 of the License.
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.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
*****************************************************************************/
/*******************************************************************//**
@file include/ut0mem.ic
Memory primitives
Created 5/30/1994 Heikki Tuuri
************************************************************************/
#include "ut0byte.h"
#include "mach0data.h"
/**********************************************************************//**
Converts a raw binary data to a NUL-terminated hex string. The output is
truncated if there is not enough space in "hex", make sure "hex_size" is at
least (2 * raw_size + 1) if you do not want this to happen. Returns the
actual number of characters written to "hex" (including the NUL).
@return number of chars written */
UNIV_INLINE
ulint
ut_raw_to_hex(
/*==========*/
const void* raw, /*!< in: raw data */
ulint raw_size, /*!< in: "raw" length in bytes */
char* hex, /*!< out: hex string */
ulint hex_size) /*!< in: "hex" size in bytes */
{
#ifdef WORDS_BIGENDIAN
#define MK_UINT16(a, b) (((uint16) (a)) << 8 | (uint16) (b))
#define UINT16_GET_A(u) ((char) ((u) >> 8))
#define UINT16_GET_B(u) ((char) ((u) & 0xFF))
#else /* WORDS_BIGENDIAN */
#define MK_UINT16(a, b) (((uint16) (b)) << 8 | (uint16) (a))
#define UINT16_GET_A(u) ((char) ((u) & 0xFF))
#define UINT16_GET_B(u) ((char) ((u) >> 8))
#endif /* WORDS_BIGENDIAN */
#define MK_ALL_UINT16_WITH_A(a) \
MK_UINT16(a, '0'), \
MK_UINT16(a, '1'), \
MK_UINT16(a, '2'), \
MK_UINT16(a, '3'), \
MK_UINT16(a, '4'), \
MK_UINT16(a, '5'), \
MK_UINT16(a, '6'), \
MK_UINT16(a, '7'), \
MK_UINT16(a, '8'), \
MK_UINT16(a, '9'), \
MK_UINT16(a, 'A'), \
MK_UINT16(a, 'B'), \
MK_UINT16(a, 'C'), \
MK_UINT16(a, 'D'), \
MK_UINT16(a, 'E'), \
MK_UINT16(a, 'F')
static const uint16 hex_map[256] = {
MK_ALL_UINT16_WITH_A('0'),
MK_ALL_UINT16_WITH_A('1'),
MK_ALL_UINT16_WITH_A('2'),
MK_ALL_UINT16_WITH_A('3'),
MK_ALL_UINT16_WITH_A('4'),
MK_ALL_UINT16_WITH_A('5'),
MK_ALL_UINT16_WITH_A('6'),
MK_ALL_UINT16_WITH_A('7'),
MK_ALL_UINT16_WITH_A('8'),
MK_ALL_UINT16_WITH_A('9'),
MK_ALL_UINT16_WITH_A('A'),
MK_ALL_UINT16_WITH_A('B'),
MK_ALL_UINT16_WITH_A('C'),
MK_ALL_UINT16_WITH_A('D'),
MK_ALL_UINT16_WITH_A('E'),
MK_ALL_UINT16_WITH_A('F')
};
const unsigned char* rawc;
ulint read_bytes;
ulint write_bytes;
ulint i;
rawc = (const unsigned char*) raw;
if (hex_size == 0) {
return(0);
}
if (hex_size <= 2 * raw_size) {
read_bytes = hex_size / 2;
write_bytes = hex_size;
} else {
read_bytes = raw_size;
write_bytes = 2 * raw_size + 1;
}
#define LOOP_READ_BYTES(ASSIGN) \
for (i = 0; i < read_bytes; i++) { \
ASSIGN; \
hex += 2; \
rawc++; \
}
if (ut_align_offset(hex, 2) == 0) {
LOOP_READ_BYTES(
*(uint16*) hex = hex_map[*rawc]
);
} else {
LOOP_READ_BYTES(
*hex = UINT16_GET_A(hex_map[*rawc]);
*(hex + 1) = UINT16_GET_B(hex_map[*rawc])
);
}
if (hex_size <= 2 * raw_size && hex_size % 2 == 0) {
hex--;
}
*hex = '\0';
return(write_bytes);
}
/*******************************************************************//**
Adds single quotes to the start and end of string and escapes any quotes
by doubling them. Returns the number of bytes that were written to "buf"
(including the terminating NUL). If buf_size is too small then the
trailing bytes from "str" are discarded.
@return number of bytes that were written */
UNIV_INLINE
ulint
ut_str_sql_format(
/*==============*/
const char* str, /*!< in: string */
ulint str_len, /*!< in: string length in bytes */
char* buf, /*!< out: output buffer */
ulint buf_size) /*!< in: output buffer size
in bytes */
{
ulint str_i;
ulint buf_i;
buf_i = 0;
switch (buf_size) {
case 3:
if (str_len == 0) {
buf[buf_i] = '\'';
buf_i++;
buf[buf_i] = '\'';
buf_i++;
}
/* FALLTHROUGH */
case 2:
case 1:
buf[buf_i] = '\0';
buf_i++;
/* FALLTHROUGH */
case 0:
return(buf_i);
}
/* buf_size >= 4 */
buf[0] = '\'';
buf_i = 1;
for (str_i = 0; str_i < str_len; str_i++) {
char ch;
if (buf_size - buf_i == 2) {
break;
}
ch = str[str_i];
switch (ch) {
case '\0':
if (buf_size - buf_i < 4) {
goto func_exit;
}
buf[buf_i] = '\\';
buf_i++;
buf[buf_i] = '0';
buf_i++;
break;
case '\'':
case '\\':
if (buf_size - buf_i < 4) {
goto func_exit;
}
buf[buf_i] = ch;
buf_i++;
/* FALLTHROUGH */
default:
buf[buf_i] = ch;
buf_i++;
}
}
func_exit:
buf[buf_i] = '\'';
buf_i++;
buf[buf_i] = '\0';
buf_i++;
return(buf_i);
}
|
