1 #include <locale.h>
2 #include <stdlib.h>
3 #include <string.h>
4 #include "locale_impl.h"
5 #include "libc.h"
6 #include "lock.h"
7
8 static char buf[LC_ALL*(LOCALE_NAME_MAX+1)];
9
10 #ifndef __LITEOS__
Fresh(struct __locale_map * lm)11 static inline int Fresh(struct __locale_map *lm)
12 {
13 if (lm != NULL) {
14 return lm->flag;
15 }
16 return VALID;
17 }
18 #endif
19
setlocale(int cat,const char * name)20 char *setlocale(int cat, const char *name)
21 {
22 const struct __locale_map *lm;
23 char flag = VALID;
24 if ((unsigned)cat > LC_ALL) return 0;
25
26 LOCK(__locale_lock);
27
28 /* For LC_ALL, setlocale is required to return a string which
29 * encodes the current setting for all categories. The format of
30 * this string is unspecified, and only the following code, which
31 * performs both the serialization and deserialization, depends
32 * on the format, so it can easily be changed if needed. */
33 if (cat == LC_ALL) {
34 int i;
35 if (name) {
36 struct __locale_struct tmp_locale;
37 char part[LOCALE_NAME_MAX+1] = "C.UTF-8";
38 const char *p = name;
39 for (i=0; i<LC_ALL; i++) {
40 const char *z = __strchrnul(p, ';');
41 if (z-p <= LOCALE_NAME_MAX) {
42 memcpy(part, p, z-p);
43 part[z-p] = 0;
44 if (*z) p = z+1;
45 }
46 lm = __get_locale(i, part);
47 if (lm == LOC_MAP_FAILED) {
48 UNLOCK(__locale_lock);
49 return 0;
50 }
51 #ifndef __LITEOS__
52 if(Fresh(lm) == INVALID) {
53 flag = INVALID;
54 }
55 #endif
56 tmp_locale.cat[i] = lm;
57 }
58 libc.global_locale = tmp_locale;
59 }
60 char *s = buf;
61 const char *part;
62 int same = 0;
63 for (i=0; i<LC_ALL; i++) {
64 const struct __locale_map *lm =
65 libc.global_locale.cat[i];
66 if (lm == libc.global_locale.cat[0]) same++;
67 part = lm ? lm->name : "C";
68 size_t l = strlen(part);
69 memcpy(s, part, l);
70 s[l] = ';';
71 s += l+1;
72 }
73 *--s = 0;
74 UNLOCK(__locale_lock);
75 if (flag == INVALID) {
76 return 0;
77 }
78 return same==LC_ALL ? (char *)part : buf;
79 }
80
81 if (name) {
82 lm = __get_locale(cat, name);
83 if (lm == LOC_MAP_FAILED) {
84 UNLOCK(__locale_lock);
85 return 0;
86 }
87 #ifndef __LITEOS__
88 flag = Fresh(lm);
89 #endif
90 libc.global_locale.cat[cat] = lm;
91 } else {
92 lm = libc.global_locale.cat[cat];
93 }
94 char *ret = lm ? (char *)lm->name : "C";
95
96 UNLOCK(__locale_lock);
97 if (flag == INVALID) {
98 return 0;
99 }
100 return ret;
101 }
102