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
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
|
%% options
copyright owner = Dirk Krause
copyright year = 2015-xxxx
license = bsd
%% header
/** @file
Get language, region and encoding.
CRT on Windows: Optional, disabling CRT degrades performance.
*/
#ifndef DK4CONF_H_INCLUDED
#include "dk4conf.h"
#endif
#ifndef DK4TYPES_H_INCLUDED
#include "dk4types.h"
#endif
#ifndef DK4ERROR_H_INCLUDED
#include "dk4error.h"
#endif
#ifdef __cplusplus
extern "C" {
#endif
/** Retrieve localization settings.
@param lang Result buffer for language name.
@param szlang Size of result buffer (number of dkChar).
@param reg Result buffer for region or country name.
@param szreg Size of result buffer (number of dkChar).
@param enc Address of result variable for encoding.
@param erp Error report, may be NULL.
@return 1 on success, 0 on error.
Error codes:
- DK4_E_INVALID_ARGUMENTS<br>
if one of lang, reg or enc is NULL or szlang or szreg is 0,
- DK4_E_BUFFER_TOO_SMALL<br>
if one of the involved buffers is too small,
*/
int
dk4loc_get_settings(
dkChar *lang,
size_t szlang,
dkChar *reg,
size_t szreg,
int *enc,
dk4_er_t *erp
);
#ifdef __cplusplus
}
#endif
%% module
#include "dk4loc.h"
#ifndef STDLIB_H_INCLUDED
#include <stdlib.h>
#define STDLIB_H_INCLUDED 1
#endif
#if DK4_HAVE_STRING_H
#ifndef STRING_H_INCLUDED
#include <string.h>
#define STRING_H_INCLUDED 1
#endif
#endif
#if DK4_HAVE_CTYPE_H
#ifndef CTYPE_H_INCLUDED
#include <ctype.h>
#define CTYPE_H_INCLUDED 1
#endif
#endif
#ifndef DK4ENC_H_INCLUDED
#include "dk4enc.h"
#endif
#ifndef DK4STR8_H_INCLUDED
#include "dk4str8.h"
#endif
#if DK4_ON_WINDOWS
#ifndef DK4WREG8_H_INCLUDED
#include "dk4wreg8.h"
#endif
#ifndef DK4WREGC_H_INCLUDED
#include "dk4wregc.h"
#endif
#endif
$!trace-include
/** Keywords used by the module.
*/
static const char * const dk4loc_mod_kw_8[] = {
$!string-table
#
# 0 Environment variable name for Linux/Unix.
#
LANG
#
# 1 2 Encoding names for UTF-8
#
utf8
UTF-8
#
# 3 4 5 Registry key and entry for localization
#
Control Panel\\International
LocaleName
sLanguage
$!end
};
static
int
dk4loc_use_default(dkChar *lptr, size_t szl, dk4_er_t *erp)
{
int back = 0;
if ((NULL != lptr) && (2 < szl)) {
lptr[0] = dkT('e');
lptr[1] = dkT('n');
lptr[2] = dkT('\0');
back = 1;
} else {
dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
}
return back;
}
int
dk4loc_get_settings(
dkChar *lang,
size_t szlang,
dkChar *reg,
size_t szreg,
int *enc,
dk4_er_t *erp
)
{
#if DK4_ON_WINDOWS
char buf[64]; /* Buffer to process getenv result */
void *kptr; /* Registry key pointer */
dkChar *pd; /* Copy string */
char *p3; /* Region */
char *p4; /* Copy string */
size_t sz; /* String length */
int res; /* Result from RegQueryValueEx() */
int expand = 0; /* Flag: Expansion necessary. */
#else
char buf[64]; /* Buffer to process getenv result */
dkChar *pd; /* Copy string */
char *p1; /* Result from getenv */
char *p2; /* Encoding */
char *p3; /* Region */
char *p4; /* Copy string */
size_t sz; /* String length */
#endif
int back = 0;
$? "+ dk4loc_get_settings %d %u %d %u %d %d", TR_IPTR(lang), (unsigned)szlang, TR_IPTR(reg), (unsigned)szreg, TR_IPTR(enc), TR_IPTR(erp)
if ((NULL != lang) && (0 < szlang)) { *lang = dkT('\0'); }
if ((NULL != reg ) && (0 < szreg )) { *reg = dkT('\0'); }
if (NULL != enc) { *enc = DK4_ENCODING_ASCII; }
if ((NULL != lang) && (NULL != reg) && (NULL != enc)) {
if ((0 < szlang) && (0 < szreg)) {
#if DK4_ON_WINDOWS
#if DK4_CHAR_SIZE > 1
*enc = DK4_ENCODING_UTF16;
#else
*enc = DK4_ENCODING_ASCII;
#endif
kptr = dk4wreg_open_key_c8(DK4_WREGKEY_HKCU, dk4loc_mod_kw_8[3], 0, erp);
if (NULL != kptr) {
res = dk4wreg_get_string_c8(
kptr, dk4loc_mod_kw_8[4], buf, sizeof(buf), &expand, erp
);
if (0 != res) {
p3 = dk4str8_chr(buf, '-');
if (NULL != p3) { *(p3++) = '\0'; }
dk4str8_normalize(buf, NULL);
if (NULL != p3) { dk4str8_normalize(p3, NULL); }
sz = dk4str8_len(buf);
if (0 < sz) {
if (szlang > sz) {
/* strcpy(lang, buf); */
pd = lang; p4 = buf;
while('\0' != *p4) {
*(pd++) = (dkChar)dk4str8_tolower(*(p4++));
}
*pd = dkT('\0');
back = 1;
sz = dk4str8_len(p3);
if (0 < sz) {
if (szreg > sz) {
/* strcpy(reg, p3); */
pd = reg; p4 = p3;
while('\0' != *p4) {
#if 0
*(pd++) = (dkChar)(tolower((unsigned char)(*(p4++))));
#endif
*(pd++) = (dkChar)dk4str8_tolower(*(p4++));
}
*pd = dkT('\0');
} else {
dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
back = 0;
}
}
} else {
dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
}
} else {
back = dk4loc_use_default(lang, szlang, erp);
}
} else {
res = dk4wreg_get_string_c8(
kptr, dk4loc_mod_kw_8[5], buf, sizeof(buf), &expand, erp
);
if (0 != res) {
dk4str8_normalize(buf, NULL);
sz = dk4str8_len(buf);
if (2 < sz) { buf[2] = '\0'; }
sz = dk4str8_len(buf);
if (0 < sz) {
if (szlang > sz) {
pd = lang; p4 = buf;
while ('\0' != *p4) {
*(pd++) = (dkChar)(tolower((unsigned char)(*(p4++))));
}
*pd = dkT('\0');
back = 1;
} else {
dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
}
} else {
back = dk4loc_use_default(lang, szlang, erp);
}
} else {
back = dk4loc_use_default(lang, szlang, erp);
}
}
dk4wreg_close_key(kptr);
} else {
back = dk4loc_use_default(lang, szlang, erp);
}
#else
p1 = getenv(dk4loc_mod_kw_8[0]);
if (NULL != p1) { $? ". getenv ok"
if (sizeof(buf) > dk4str8_len(p1)) { $? ". length ok"
dk4str8_cpy_s(buf, sizeof(buf), p1, NULL);
p2 = dk4str8_chr(buf, '.');
if (NULL != p2) { $? ". p2 has encoding"
*(p2++) = '\0'; $? ". encoding \"%!8s\"", p2
}
p3 = dk4str8_chr(buf, '_');
if (NULL != p3) { $? ". p3 has region"
*(p3++) = '\0'; $? ". region \"%!8s\"", p3
} $? ". language \"%!8s\"", buf
dk4str8_normalize(buf, NULL); $? ". normalized"
if (NULL != p2) { dk4str8_normalize(p2, NULL); }
if (NULL != p3) { dk4str8_normalize(p3, NULL); }
sz = dk4str8_len(buf); $? ". buf lgt %u", (unsigned)sz
if (0 < sz) {
if (szlang > sz) {
/* strcpy(lang, buf); */
pd = lang; p4 = buf;
while('\0' != *p4) {
*(pd++) = (dkChar)(tolower((unsigned char)(*(p4++))));
}
*pd = dkT('\0');
back = 1;
if (NULL != p3) {
sz = dk4str8_len(p3);
if (0 < sz) {
if (szreg > sz) {
/* strcpy(reg, p3); */
pd = reg; p4 = p3;
while('\0' != *p4) {
*(pd++) = (dkChar)(tolower((unsigned char)(*(p4++))));
}
*pd = dkT('\0');
} else {
dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
back = 0;
}
}
}
#if DK4_CHAR_SIZE > 1
#if DK4_CHAR_SIZE > 2
$? ". 32 bit"
*enc = DK4_ENCODING_32;
#else
$? ". 16 bit"
*enc = DK4_ENCODING_UTF16;
#endif
#else
$? ". 8 bit"
*enc = DK4_ENCODING_ASCII;
if (NULL != p2) {
if (0 == dk4str8_casecmp(p2, dk4loc_mod_kw_8[1])) {
*enc = DK4_ENCODING_UTF8;
} else {
if (0 == dk4str8_casecmp(p2, dk4loc_mod_kw_8[2])) {
*enc = DK4_ENCODING_UTF8;
}
}
}
#endif
} else { $? "! LANG too long"
dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
}
} else { $? "! zero length LANG"
back = dk4loc_use_default(lang, szlang, erp);
}
} else { $? "! LANG env too long"
dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
}
} else { $? "! getenv"
back = dk4loc_use_default(lang, szlang, erp);
}
#endif
} else { $? "! invalid args"
dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
}
} else { $? "! invalid args"
dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
} $? "- dk4loc_get_settings %d", back
return back;
}
|