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-rw-r--r--libc/misc/locale/locale.c95
1 files changed, 92 insertions, 3 deletions
diff --git a/libc/misc/locale/locale.c b/libc/misc/locale/locale.c
index fd587429b..fd52782c1 100644
--- a/libc/misc/locale/locale.c
+++ b/libc/misc/locale/locale.c
@@ -17,7 +17,6 @@
/* TODO:
* Implement the shared mmap code so non-mmu platforms can use this.
- * Implement nl_langinfo() for the stub locale support.
* Add some basic collate functionality similar to what the previous
* locale support had (8-bit codesets only).
*/
@@ -481,11 +480,101 @@ void _locale_set(const unsigned char *p)
/**********************************************************************/
#ifdef L_nl_langinfo
-#ifndef __LOCALE_C_ONLY
-
#include <langinfo.h>
#include <nl_types.h>
+#ifdef __LOCALE_C_ONLY
+
+/* We need to index 300 bytes of data, so you might initially think we
+ * need to store the offsets in shorts. But since the offset of the
+ * 64th item is 231, we'll store "offset - 64" for all items >= 64
+ * and always calculate the data offset as "offset[i] + (i & 64)".
+ * This allows us to pack the data offsets in an unsigned char while
+ * also avoiding an "if".
+ *
+ * Note: Category order is assumed to be:
+ * ctype, numeric, monetary, time, collate, messages, all
+ */
+
+
+/* Combine the data to avoid size penalty for seperate char arrays when
+ * compiler aligns objects. The original code is left in as documentation. */
+#define cat_start nl_data
+#define C_locale_data nl_data + LC_ALL + 1 + 78
+
+static const unsigned char nl_data[LC_ALL + 1 + 78 + 300] = {
+/* static const unsigned char cat_start[LC_ALL + 1] = { */
+ '\x00', '\x01', '\x04', '\x1a', '\x4c', '\x4c', '\x4e',
+/* }; */
+/* static const unsigned char item_offset[78] = { */
+ '\x00', '\x06', '\x07', '\x07', '\x07', '\x07', '\x07', '\x07',
+ '\x07', '\x07', '\x07', '\x08', '\x08', '\x08', '\x08', '\x08',
+ '\x08', '\x08', '\x08', '\x08', '\x08', '\x08', '\x08', '\x08',
+ '\x08', '\x0a', '\x0c', '\x10', '\x14', '\x18', '\x1c', '\x20',
+ '\x24', '\x28', '\x2f', '\x36', '\x3e', '\x48', '\x51', '\x58',
+ '\x61', '\x65', '\x69', '\x6d', '\x71', '\x75', '\x79', '\x7d',
+ '\x81', '\x85', '\x89', '\x8d', '\x91', '\x99', '\xa2', '\xa8',
+ '\xae', '\xb2', '\xb7', '\xbc', '\xc3', '\xcd', '\xd5', '\xde',
+ '\xa7', '\xaa', '\xad', '\xc2', '\xcb', '\xd4', '\xdf', '\xdf',
+ '\xdf', '\xdf', '\xdf', '\xdf', '\xe0', '\xe6',
+/* }; */
+/* static const unsigned char C_locale_data[300] = { */
+ 'A', 'S', 'C', 'I', 'I', '\x00', '.', '\x00',
+ '\x7f', '\x00', '-', '\x00', 'S', 'u', 'n', '\x00',
+ 'M', 'o', 'n', '\x00', 'T', 'u', 'e', '\x00',
+ 'W', 'e', 'd', '\x00', 'T', 'h', 'u', '\x00',
+ 'F', 'r', 'i', '\x00', 'S', 'a', 't', '\x00',
+ 'S', 'u', 'n', 'd', 'a', 'y', '\x00', 'M',
+ 'o', 'n', 'd', 'a', 'y', '\x00', 'T', 'u',
+ 'e', 's', 'd', 'a', 'y', '\x00', 'W', 'e',
+ 'd', 'n', 'e', 's', 'd', 'a', 'y', '\x00',
+ 'T', 'h', 'u', 'r', 's', 'd', 'a', 'y',
+ '\x00', 'F', 'r', 'i', 'd', 'a', 'y', '\x00',
+ 'S', 'a', 't', 'u', 'r', 'd', 'a', 'y',
+ '\x00', 'J', 'a', 'n', '\x00', 'F', 'e', 'b',
+ '\x00', 'M', 'a', 'r', '\x00', 'A', 'p', 'r',
+ '\x00', 'M', 'a', 'y', '\x00', 'J', 'u', 'n',
+ '\x00', 'J', 'u', 'l', '\x00', 'A', 'u', 'g',
+ '\x00', 'S', 'e', 'p', '\x00', 'O', 'c', 't',
+ '\x00', 'N', 'o', 'v', '\x00', 'D', 'e', 'c',
+ '\x00', 'J', 'a', 'n', 'u', 'a', 'r', 'y',
+ '\x00', 'F', 'e', 'b', 'r', 'u', 'a', 'r',
+ 'y', '\x00', 'M', 'a', 'r', 'c', 'h', '\x00',
+ 'A', 'p', 'r', 'i', 'l', '\x00', 'M', 'a',
+ 'y', '\x00', 'J', 'u', 'n', 'e', '\x00', 'J',
+ 'u', 'l', 'y', '\x00', 'A', 'u', 'g', 'u',
+ 's', 't', '\x00', 'S', 'e', 'p', 't', 'e',
+ 'm', 'b', 'e', 'r', '\x00', 'O', 'c', 't',
+ 'o', 'b', 'e', 'r', '\x00', 'N', 'o', 'v',
+ 'e', 'm', 'b', 'e', 'r', '\x00', 'D', 'e',
+ 'c', 'e', 'm', 'b', 'e', 'r', '\x00', 'A',
+ 'M', '\x00', 'P', 'M', '\x00', '%', 'a', ' ',
+ '%', 'b', ' ', '%', 'e', ' ', '%', 'H',
+ ':', '%', 'M', ':', '%', 'S', ' ', '%',
+ 'Y', '\x00', '%', 'm', '/', '%', 'd', '/',
+ '%', 'y', '\x00', '%', 'H', ':', '%', 'M',
+ ':', '%', 'S', '\x00', '%', 'I', ':', '%',
+ 'M', ':', '%', 'S', ' ', '%', 'p', '\x00',
+ '^', '[', 'y', 'Y', ']', '\x00', '^', '[',
+ 'n', 'N', ']', '\x00',
+};
+
+char *nl_langinfo(nl_item item)
+{
+ unsigned int c;
+ unsigned int i;
+
+ if ((c = _NL_ITEM_CATEGORY(item)) < LC_ALL) {
+ if ((i = cat_start[c] + _NL_ITEM_INDEX(item)) < cat_start[c+1]) {
+/* return (char *) C_locale_data + item_offset[i] + (i & 64); */
+ return (char *) C_locale_data + nl_data[LC_ALL+1+i] + (i & 64);
+ }
+ }
+ return (char *) cat_start; /* Conveniently, this is the empty string. */
+}
+
+#else /* __LOCALE_C_ONLY */
+
static const char empty[] = "";
char *nl_langinfo(nl_item item)