#include <stdlib.h> #include <string.h> #include "locale_impl.h" #include "libc.h" int __loc_is_allocated(locale_t loc) { return loc && loc != C_LOCALE && loc != UTF8_LOCALE; } locale_t __newlocale(int mask, const char *name, locale_t loc) { int i, j; struct __locale_struct tmp; const struct __locale_map *lm; /* For locales with allocated storage, modify in-place. */ if (__loc_is_allocated(loc)) { for (i=0; i<LC_ALL; i++) if (mask & (1<<i)) loc->cat[i] = __get_locale(i, name); return loc; } /* Otherwise, build a temporary locale object, which will only * be instantiated in allocated storage if it does not match * one of the built-in static locales. This makes the common * usage case for newlocale, getting a C locale with predictable * behavior, very fast, and more importantly, fail-safe. */ for (j=i=0; i<LC_ALL; i++) { if (loc && !(mask & (1<<i))) lm = loc->cat[i]; else lm = __get_locale(i, mask & (1<<i) ? name : ""); if (lm) j++; tmp.cat[i] = lm; } if (!j) return C_LOCALE; if (j==1 && tmp.cat[LC_CTYPE]==&__c_dot_utf8) return UTF8_LOCALE; if ((loc = malloc(sizeof *loc))) *loc = tmp; return loc; } weak_alias(__newlocale, newlocale);