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
|
/* Test of u16_prev() function.
Copyright (C) 2010-2018 Free Software Foundation, Inc.
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 3 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.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2010. */
#include <config.h>
#include "unistr.h"
#include "macros.h"
static int
check (const uint16_t *input, size_t input_length, ucs4_t *puc)
{
ucs4_t uc;
/* Test recognition when at the beginning of the string. */
if (u16_prev (&uc, input + input_length, input) != input)
return 1;
/* Test recognition when preceded by a 1-unit character. */
{
uint16_t buf[100];
uint16_t *ptr;
size_t i;
ucs4_t uc1;
ptr = buf;
*ptr++ = 0x2102;
for (i = 0; i < input_length; i++)
ptr[i] = input[i];
if (u16_prev (&uc1, ptr + input_length, buf) != ptr)
return 2;
if (uc1 != uc)
return 3;
}
/* Test recognition when preceded by a 2-unit character. */
{
uint16_t buf[100];
uint16_t *ptr;
size_t i;
ucs4_t uc1;
ptr = buf;
*ptr++ = 0xD835;
*ptr++ = 0xDD1E;
for (i = 0; i < input_length; i++)
ptr[i] = input[i];
if (u16_prev (&uc1, ptr + input_length, buf) != ptr)
return 4;
if (uc1 != uc)
return 5;
}
*puc = uc;
return 0;
}
static int
check_invalid (const uint16_t *input, size_t input_length)
{
ucs4_t uc;
/* Test recognition when at the beginning of the string. */
uc = 0xBADFACE;
if (u16_prev (&uc, input + input_length, input) != NULL)
return 1;
if (uc != 0xBADFACE)
return 2;
/* Test recognition when preceded by a 1-unit character. */
{
uint16_t buf[100];
uint16_t *ptr;
size_t i;
ptr = buf;
*ptr++ = 0x2102;
for (i = 0; i < input_length; i++)
ptr[i] = input[i];
uc = 0xBADFACE;
if (u16_prev (&uc, ptr + input_length, buf) != NULL)
return 3;
if (uc != 0xBADFACE)
return 4;
}
/* Test recognition when preceded by a 2-unit character. */
{
uint16_t buf[100];
uint16_t *ptr;
size_t i;
ptr = buf;
*ptr++ = 0xD835;
*ptr++ = 0xDD1E;
for (i = 0; i < input_length; i++)
ptr[i] = input[i];
uc = 0xBADFACE;
if (u16_prev (&uc, ptr + input_length, buf) != NULL)
return 5;
if (uc != 0xBADFACE)
return 6;
}
return 0;
}
int
main ()
{
ucs4_t uc;
/* Test ISO 646 unit input. */
{
ucs4_t c;
uint16_t buf[1];
for (c = 0; c < 0x80; c++)
{
buf[0] = c;
uc = 0xBADFACE;
ASSERT (check (buf, 1, &uc) == 0);
ASSERT (uc == c);
}
}
/* Test BMP unit input. */
{
static const uint16_t input[] = { 0x20AC };
uc = 0xBADFACE;
ASSERT (check (input, SIZEOF (input), &uc) == 0);
ASSERT (uc == 0x20AC);
}
/* Test 2-units character input. */
{
static const uint16_t input[] = { 0xD835, 0xDD1F };
uc = 0xBADFACE;
ASSERT (check (input, SIZEOF (input), &uc) == 0);
ASSERT (uc == 0x1D51F);
}
/* Test incomplete/invalid 1-unit input. */
{
static const uint16_t input[] = { 0xD835 };
ASSERT (check_invalid (input, SIZEOF (input)) == 0);
}
{
static const uint16_t input[] = { 0xDD1F };
ASSERT (check_invalid (input, SIZEOF (input)) == 0);
}
return 0;
}
|
