diff options
Diffstat (limited to 'wcsmbs')
| -rw-r--r-- | wcsmbs/btowc.c | 8 | ||||
| -rw-r--r-- | wcsmbs/wchar.h | 18 | ||||
| -rw-r--r-- | wcsmbs/wctob.c | 7 |
3 files changed, 30 insertions, 3 deletions
diff --git a/wcsmbs/btowc.c b/wcsmbs/btowc.c index 1ba0221403..6add7ed8bb 100644 --- a/wcsmbs/btowc.c +++ b/wcsmbs/btowc.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1996,1997,1998,1999,2000,2002 Free Software Foundation, Inc. +/* Copyright (C) 1996-2000,2002,2005 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@gnu.org>, 1996. @@ -17,6 +17,7 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ +#include <ctype.h> #include <dlfcn.h> #include <gconv.h> #include <stdio.h> @@ -37,6 +38,11 @@ __btowc (c) if (c < SCHAR_MIN || c > UCHAR_MAX || c == EOF) return WEOF; + /* We know that only ASCII compatible encodings are used for the + locale and that the wide character encoding is ISO 10646. */ + if (isascii (c)) + return (wint_t) c; + /* Get the conversion functions. */ fcts = get_gconv_fcts (_NL_CURRENT_DATA (LC_CTYPE)); diff --git a/wcsmbs/wchar.h b/wcsmbs/wchar.h index 1fe7e94d92..fe4ee80bff 100644 --- a/wcsmbs/wchar.h +++ b/wcsmbs/wchar.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1995-2002, 2003, 2004 Free Software Foundation, Inc. +/* Copyright (C) 1995-2004, 2005 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -320,6 +320,22 @@ __END_NAMESPACE_C99 #ifdef __USE_EXTERN_INLINES /* Define inline function as optimization. */ + +/* We can use the BTOWC and WCTOB optimizations since we know that all + locales must use ASCII encoding for the values in the ASCII range + and because the wchar_t encoding is always ISO 10646. */ +extern wint_t __btowc_alias (int __c) __asm ("btowc"); +extern __inline wint_t +__NTH (btowc (int __c)) +{ return (__builtin_constant_p (__c) && __c >= '\0' && __c <= '\x7f' + ? (wint_t) __c : __btowc_alias (__c)); } + +extern int __wctob_alias (wint_t __c) __asm ("wctob"); +extern __inline int +__NTH (wctob (wint_t __wc)) +{ return (__builtin_constant_p (__wc) && __wc >= L'\0' && __wc <= L'\x7f' + ? (int) __wc : __wctob_alias (__wc)); } + extern __inline size_t __NTH (mbrlen (__const char *__restrict __s, size_t __n, mbstate_t *__restrict __ps)) diff --git a/wcsmbs/wctob.c b/wcsmbs/wctob.c index 854a3f25db..0f241577a4 100644 --- a/wcsmbs/wctob.c +++ b/wcsmbs/wctob.c @@ -40,6 +40,11 @@ wctob (c) if (c == WEOF) return EOF; + /* We know that only ASCII compatible encodings are used for the + locale and that the wide character encoding is ISO 10646. */ + if (c >= L'\0' && c <= L'\x7f') + return (int) c; + /* Tell where we want the result. */ data.__outbuf = buf; data.__outbufend = buf + MB_LEN_MAX; @@ -69,5 +74,5 @@ wctob (c) || data.__outbuf != (unsigned char *) (buf + 1)) return EOF; - return (unsigned char) buf[0]; + return buf[0]; } |