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
|
/* AT91SAM7 USB string descriptor builder
* (C) 2006 by Harald Welte <laforge@gnumonks.org>
*
* 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.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* Based on existing utf8_to_utf16le() function,
* Copyright (C) 2003 David Brownell
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*/
#include <sys/types.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
static int utf8_to_utf16le(const char *s, uint16_t *cp, unsigned len)
{
int count = 0;
uint8_t c;
uint16_t uchar;
/* this insists on correct encodings, though not minimal ones.
* BUT it currently rejects legit 4-byte UTF-8 code points,
* which need surrogate pairs. (Unicode 3.1 can use them.)
*/
while (len != 0 && (c = (uint8_t) *s++) != 0) {
if (c & 0x80) {
// 2-byte sequence:
// 00000yyyyyxxxxxx = 110yyyyy 10xxxxxx
if ((c & 0xe0) == 0xc0) {
uchar = (c & 0x1f) << 6;
c = (uint8_t) *s++;
if ((c & 0xc0) != 0xc0)
goto fail;
c &= 0x3f;
uchar |= c;
// 3-byte sequence (most CJKV characters):
// zzzzyyyyyyxxxxxx = 1110zzzz 10yyyyyy 10xxxxxx
} else if ((c & 0xf0) == 0xe0) {
uchar = (c & 0x0f) << 12;
c = (uint8_t) *s++;
if ((c & 0xc0) != 0xc0)
goto fail;
c &= 0x3f;
uchar |= c << 6;
c = (uint8_t) *s++;
if ((c & 0xc0) != 0xc0)
goto fail;
c &= 0x3f;
uchar |= c;
/* no bogus surrogates */
if (0xd800 <= uchar && uchar <= 0xdfff)
goto fail;
// 4-byte sequence (surrogate pairs, currently rare):
// 11101110wwwwzzzzyy + 110111yyyyxxxxxx
// = 11110uuu 10uuzzzz 10yyyyyy 10xxxxxx
// (uuuuu = wwww + 1)
// FIXME accept the surrogate code points (only)
} else
goto fail;
} else
uchar = c;
*cp++ = uchar;
count++;
len--;
}
return count;
fail:
return -1;
}
#define COLUMNS 6
static int print_array16(uint16_t *buf, int len)
{
int i;
for (i = 0; i < len; i++) {
int mod = i % COLUMNS;
char *suffix;
char *prefix;
switch (mod) {
case 0:
if (i == 0)
prefix = "\t";
else
prefix= "\t\t\t";
suffix = ", ";
break;
case COLUMNS-1:
prefix = "";
suffix = ",\n";
break;
default:
prefix = "";
suffix = ", ";
break;
}
printf("%s0x%04x%s", prefix, buf[i], suffix);
}
}
static void print_structhdr(int i, int size)
{
printf( "static const struct {\n"
"\tstruct usb_descriptor_header hdr;\n"
"\tuint16_t wData[];\n"
"} __attribute__((packed)) string%d = {\n"
"\t.hdr = {\n"
"\t\t.bLength = sizeof(struct usb_descriptor_header) + %u * sizeof(uint16_t),\n"
"\t\t.bDescriptorType = USB_DT_STRING,\n"
"\t},\n"
"\t.wData = {", i, size);
}
static void print_structftr(void)
{
printf("},\n};\n\n");
}
int main(int argc, char **argv)
{
char asciibuf[512+1];
uint16_t utf16buf[1024+1];
int len;
int j, i = 1;
printf("#ifndef _USB_STRINGS_H\n#define _USB_STRINGS_H\n\n");
printf("/* THIS FILE IS AUTOGENERATED, DO NOT MODIFY MANUALLY */\n\n");
printf("#include <usb_ch9.h>\n");
printf("#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))\n\n");
print_structhdr(0, 1);
printf("0x0409 /* English */ ");
print_structftr();
#if 0
printf("static const struct usb_string_descriptor string0 = {\n"
"\t.bLength = sizeof(string0) + 1 * sizeof(uint16_t),\n"
"\t.bDescriptorType = USB_DT_STRING,\n"
"\t.wData[0] = 0x0409, /* English */\n"
"};\n\n");
#endif
while (scanf("%512[^\n]\n", asciibuf) != EOF) {
len = strlen(asciibuf);
printf("/* String %u \"%s\" */\n", i, asciibuf);
/* FIXME: check return value */
utf8_to_utf16le(asciibuf, utf16buf, len);
print_structhdr(i, len);
#if 0
printf("static const struct usb_string_descriptor string%d = {\n"
"\t.bLength = sizeof(string%d) + %d * sizeof(uint16_t),\n"
"\t.bDescriptorType = USB_DT_STRING,\n"
"\t.wData = {", i, i, len);
#endif
print_array16(utf16buf, len);
print_structftr();
#if 0
printf("},\n};\n\n");
#endif
i++;
}
printf("static const struct usb_descriptor_header *usb_strings[] = {\n");
for (j = 0; j < i; j++)
printf("\t(struct usb_descriptor_header *) &string%d,\n", j);
printf("};\n\n");
printf("#endif /* _USB_STRINGS_H */\n");
exit(0);
}
|
