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Unified Diff: fusl/src/locale/locale_map.c

Issue 1573973002: Add a "fork" of musl as //fusl. (Closed) Base URL: https://github.com/domokit/mojo.git@master
Patch Set: Created 4 years, 11 months ago
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Index: fusl/src/locale/locale_map.c
diff --git a/fusl/src/locale/locale_map.c b/fusl/src/locale/locale_map.c
new file mode 100644
index 0000000000000000000000000000000000000000..c3e591746fb00aeddeec0d8e5a10f25ccc006691
--- /dev/null
+++ b/fusl/src/locale/locale_map.c
@@ -0,0 +1,116 @@
+#include <locale.h>
+#include <string.h>
+#include "locale_impl.h"
+#include "libc.h"
+#include "atomic.h"
+
+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;
+}
+
+const unsigned char *__map_file(const char *, size_t *);
+int __munmap(void *, size_t);
+char *__strchrnul(const char *, int);
+
+static const char envvars[][12] = {
+ "LC_CTYPE",
+ "LC_NUMERIC",
+ "LC_TIME",
+ "LC_COLLATE",
+ "LC_MONETARY",
+ "LC_MESSAGES",
+};
+
+const struct __locale_map *__get_locale(int cat, const char *val)
+{
+ static int lock[2];
+ 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;
+
+ LOCK(lock);
+
+ for (p=loc_head; p; p=p->next)
+ if (!strcmp(val, p->name)) {
+ UNLOCK(lock);
+ 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 - !!*z;
+ 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;
+
+ UNLOCK(lock);
+ return new;
+}
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