| #include <locale.h> |
| #include <string.h> |
| #include <sys/mman.h> |
| #include <stdlib.h> |
| #include "locale_impl.h" |
| #include "libc.h" |
| #include "lock.h" |
| #include "fork_impl.h" |
| |
| #define malloc __libc_malloc |
| #define calloc undef |
| #define realloc undef |
| #define free undef |
| |
| const char *__lctrans_impl(const char *msg, const struct __locale_map *lm) |
| { |
| const char *trans = 0; |
| if (lm) trans = __mo_lookup(lm->map, lm->map_size, msg); |
| return trans ? trans : msg; |
| } |
| |
| static const char envvars[][12] = { |
| "LC_CTYPE", |
| "LC_NUMERIC", |
| "LC_TIME", |
| "LC_COLLATE", |
| "LC_MONETARY", |
| "LC_MESSAGES", |
| }; |
| |
| volatile int __locale_lock[1]; |
| volatile int *const __locale_lockptr = __locale_lock; |
| |
| const struct __locale_map *__get_locale(int cat, const char *val) |
| { |
| static void *volatile loc_head; |
| const struct __locale_map *p; |
| struct __locale_map *new = 0; |
| const char *path = 0, *z; |
| char buf[256]; |
| size_t l, n; |
| |
| if (!*val) { |
| (val = getenv("LC_ALL")) && *val || |
| (val = getenv(envvars[cat])) && *val || |
| (val = getenv("LANG")) && *val || |
| (val = "C.UTF-8"); |
| } |
| |
| /* Limit name length and forbid leading dot or any slashes. */ |
| for (n=0; n<LOCALE_NAME_MAX && val[n] && val[n]!='/'; n++); |
| if (val[0]=='.' || val[n]) val = "C.UTF-8"; |
| int builtin = (val[0]=='C' && !val[1]) |
| || !strcmp(val, "C.UTF-8") |
| || !strcmp(val, "POSIX"); |
| |
| if (builtin) { |
| if (cat == LC_CTYPE && val[1]=='.') |
| return (void *)&__c_dot_utf8; |
| return 0; |
| } |
| |
| for (p=loc_head; p; p=p->next) |
| if (!strcmp(val, p->name)) return p; |
| |
| if (!libc.secure) path = getenv("MUSL_LOCPATH"); |
| /* FIXME: add a default path? */ |
| |
| if (path) for (; *path; path=z+!!*z) { |
| z = __strchrnul(path, ':'); |
| l = z - path; |
| if (l >= sizeof buf - n - 2) continue; |
| memcpy(buf, path, l); |
| buf[l] = '/'; |
| memcpy(buf+l+1, val, n); |
| buf[l+1+n] = 0; |
| size_t map_size; |
| const void *map = __map_file(buf, &map_size); |
| if (map) { |
| new = malloc(sizeof *new); |
| if (!new) { |
| __munmap((void *)map, map_size); |
| break; |
| } |
| new->map = map; |
| new->map_size = map_size; |
| memcpy(new->name, val, n); |
| new->name[n] = 0; |
| new->next = loc_head; |
| loc_head = new; |
| break; |
| } |
| } |
| |
| /* If no locale definition was found, make a locale map |
| * object anyway to store the name, which is kept for the |
| * sake of being able to do message translations at the |
| * application level. */ |
| if (!new && (new = malloc(sizeof *new))) { |
| new->map = __c_dot_utf8.map; |
| new->map_size = __c_dot_utf8.map_size; |
| memcpy(new->name, val, n); |
| new->name[n] = 0; |
| new->next = loc_head; |
| loc_head = new; |
| } |
| |
| /* For LC_CTYPE, never return a null pointer unless the |
| * requested name was "C" or "POSIX". */ |
| if (!new && cat == LC_CTYPE) new = (void *)&__c_dot_utf8; |
| |
| return new; |
| } |