Libc-391.tar.gz

[apple/libc.git] / locale / FreeBSD / mskanji.c

diff --git a/locale/FreeBSD/mskanji.c b/locale/FreeBSD/mskanji.c
index ce469c8996254c75401bf3fcbd7917794177f62c..c84661aac94ee0fa1c562ac48968c21e948f4a8c 100644 (file)
--- a/locale/FreeBSD/mskanji.c
+++ b/locale/FreeBSD/mskanji.c
@@ -1,4 +1,6 @@
 /*
+ * Copyright (c) 2002-2004 Tim J. Robbins. All rights reserved.
+ *
  *    ja_JP.SJIS locale table for BSD4.4/rune
  *    version 1.0
  *    (C) Sin'ichiro MIYATANI / Phase One, Inc
@@ -34,78 +36,121 @@
 #if defined(LIBC_SCCS) && !defined(lint)
 static char sccsid[] = "@(#)mskanji.c  1.0 (Phase One) 5/5/95";
 #endif /* LIBC_SCCS and not lint */
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD: src/lib/libc/locale/mskanji.c,v 1.8 2002/10/14 01:50:45 tjr Exp $");
-
-#include <sys/types.h>
+#include <sys/param.h>
+__FBSDID("$FreeBSD: src/lib/libc/locale/mskanji.c,v 1.16 2004/05/14 15:40:47 tjr Exp $");
 
-#include <rune.h>
-#include <stddef.h>
-#include <stdio.h>
+#include <errno.h>
+#include <runetype.h>
 #include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+#include "mblocal.h"
+
+int    _MSKanji_init(_RuneLocale *);
+size_t _MSKanji_mbrtowc(wchar_t * __restrict, const char * __restrict, size_t,
+           mbstate_t * __restrict);
+int    _MSKanji_mbsinit(const mbstate_t *);
+size_t _MSKanji_wcrtomb(char * __restrict, wchar_t, mbstate_t * __restrict);
 
-rune_t _MSKanji_sgetrune(const char *, size_t, char const **);
-int    _MSKanji_sputrune(rune_t, char *, size_t, char **);
+typedef struct {
+       wchar_t ch;
+} _MSKanjiState;
 
 int
-_MSKanji_init(rl)
-       _RuneLocale *rl;
+_MSKanji_init(_RuneLocale *rl)
 {
-       rl->sgetrune = _MSKanji_sgetrune;
-       rl->sputrune = _MSKanji_sputrune;
 
+       __mbrtowc = _MSKanji_mbrtowc;
+       __wcrtomb = _MSKanji_wcrtomb;
+       __mbsinit = _MSKanji_mbsinit;
        _CurrentRuneLocale = rl;
        __mb_cur_max = 2;
        return (0);
 }
 
-rune_t
-_MSKanji_sgetrune(string, n, result)
-       const char *string;
-       size_t n;
-       char const **result;
+int
+_MSKanji_mbsinit(const mbstate_t *ps)
 {
-       rune_t rune = 0;
 
-       if (n < 1) {
-               if (result != NULL)
-                       *result = string;
-               return (_INVALID_RUNE);
+       return (ps == NULL || ((const _MSKanjiState *)ps)->ch == 0);
+}
+
+size_t
+_MSKanji_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
+    mbstate_t * __restrict ps)
+{
+       _MSKanjiState *ms;
+       wchar_t wc;
+
+       ms = (_MSKanjiState *)ps;
+
+       if ((ms->ch & ~0xFF) != 0) {
+               /* Bad conversion state. */
+               errno = EINVAL;
+               return ((size_t)-1);
        }
 
-       rune = *string++ & 0xff;
-       if ((rune > 0x80 && rune < 0xa0) ||
-           (rune >= 0xe0 && rune < 0xfd)) {
-               if (n < 2) {
-                       rune = _INVALID_RUNE;
-                       --string;
-               } else
-                       rune = (rune << 8) | (*string++ & 0xff);
+       if (s == NULL) {
+               s = "";
+               n = 1;
+               pwc = NULL;
        }
-       if (result != NULL)
-               *result = string;
 
-       return (rune);
+       if (n == 0)
+               /* Incomplete multibyte sequence */
+               return ((size_t)-2);
+
+       if (ms->ch != 0) {
+               if (*s == '\0') {
+                       errno = EILSEQ;
+                       return ((size_t)-1);
+               }
+               wc = (ms->ch << 8) | (*s & 0xFF);
+               if (pwc != NULL)
+                       *pwc = wc;
+               ms->ch = 0;
+               return (1);
+       }
+       wc = *s++ & 0xff;
+       if ((wc > 0x80 && wc < 0xa0) || (wc >= 0xe0 && wc < 0xfd)) {
+               if (n < 2) {
+                       /* Incomplete multibyte sequence */
+                       ms->ch = wc;
+                       return ((size_t)-2);
+               }
+               if (*s == '\0') {
+                       errno = EILSEQ;
+                       return ((size_t)-1);
+               }
+               wc = (wc << 8) | (*s++ & 0xff);
+               if (pwc != NULL)
+                       *pwc = wc;
+               return (2);
+       } else {
+               if (pwc != NULL)
+                       *pwc = wc;
+               return (wc == L'\0' ? 0 : 1);
+       }
 }
 
-int
-_MSKanji_sputrune(c, string, n, result)
-       rune_t c;
-       char *string, **result;
-       size_t n;
+size_t
+_MSKanji_wcrtomb(char * __restrict s, wchar_t wc, mbstate_t * __restrict ps)
 {
+       _MSKanjiState *ms;
        int len, i;
 
-       len = (c > 0x100) ? 2 : 1;
-       if (n < len) {
-               if (result != NULL)
-                       *result = NULL;
-       } else {
-               if (result != NULL)
-                       *result = string + len;
-               for (i = len; i-- > 0; )
-                       *string++ = c >> (i << 3);
+       ms = (_MSKanjiState *)ps;
+
+       if (ms->ch != 0) {
+               errno = EINVAL;
+               return ((size_t)-1);
        }
 
+       if (s == NULL)
+               /* Reset to initial shift state (no-op) */
+               return (1);
+       len = (wc > 0x100) ? 2 : 1;
+       for (i = len; i-- > 0; )
+               *s++ = wc >> (i << 3);
        return (len);
 }