From f9ad060c7acbfd46d0a207c2da40999f8e6d4420 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Mon, 2 Dec 2002 22:39:58 +0000 Subject: Update. 2002-11-30 Bruno Haible * iconv/gconv.h (__gconv_btowc_fct): New typedef. (struct __gconv_step): New field __btowc_fct. * wcsmbs/btowc.c (__btowc): Use the __btowc_fct shortcut if possible. * iconv/gconv_int.h (__BUILTIN_TRANSFORM): Renamed from __BUILTIN_TRANS. (__gconv_btwoc_ascii): New declaration. * iconv/gconv_simple.c (BUILTIN_TRANSFORMATION): Add BtowcFct argument. (__gconv_btwoc_ascii): New function. * iconv/gconv_builtin.h: Add BtowcFct argument to all BUILTIN_TRANSFORMATION invocations. * iconv/gconv_conf.c (BUILTIN_TRANSFORMATION): Add BtowcFct argument. * iconv/iconvconfig.c (BUILTIN_TRANSFORMATION): Likewise. * iconv/gconv_builtin.c (map): New field btowc_fct. (BUILTIN_TRANSFORMATION): Add BtowcFct argument. Use it to initialize btowc_fct field. (__gconv_get_builtin_trans): Initialize __btowc_fct field. * iconv/gconv_cache.c (find_module): Initialize __btowc_fct field. * iconv/gconv_db.c (gen_steps, increment_counter): Likewise. * wcsmbs/wcsmbsload.c (to_wc, to_mb): Likewise. * iconv/skeleton.c: Document STORE_REST and FROM_ONEBYTE. (gconv_init): Initialize __btowc_fct field. Undefine EXTRA_LOOP_ARGS and FROM_ONEBYTE at the end. * iconv/loop.c: Document ONEBYTE_BODY. (gconv_btowc, FROM_ONEBYTE): Define if ONEBYTE_BODY is defined. Undefine ONEBYTE_BODY at the end. * iconvdata/8bit-generic.c (ONEBYTE_BODY): New macro. * iconvdata/8bit-gap.c (NONNUL): New macro. (BODY for FROM_LOOP): Use it. (ONEBYTE_BODY): New macro. * iconvdata/isiri-3342.c (HAS_HOLES): Set to 1. (NONNUL): New macro. * iconvdata/ansi_x3.110.c (ONEBYTE_BODY): New macro. * iconvdata/armscii-8.c (ONEBYTE_BODY): New macro. * iconvdata/cp1255.c (ONEBYTE_BODY): New macro. * iconvdata/cp1258.c (ONEBYTE_BODY): New macro. * iconvdata/tcvn5712-1.c (ONEBYTE_BODY): New macro. * iconvdata/big5.c (ONEBYTE_BODY): New macro. * iconvdata/big5hkscs.c (ONEBYTE_BODY): New macro. * iconvdata/euc-cn.c (ONEBYTE_BODY): New macro. * iconvdata/euc-jp.c (ONEBYTE_BODY): New macro. * iconvdata/euc-jisx0213.c (ONEBYTE_BODY): New macro. * iconvdata/euc-kr.c (ONEBYTE_BODY): New macro. * iconvdata/euc-tw.c (ONEBYTE_BODY): New macro. * iconvdata/gbk.c (ONEBYTE_BODY): New macro. * iconvdata/gb18030.c (ONEBYTE_BODY): New macro. * iconvdata/ibm932.c: Include . (TRUE, FALSE): Remove macros. (BODY for FROM_LOOP): Remove unused variable rp1. (ONEBYTE_BODY): New macro. (BODY for TO_LOOP): Use bool. * iconvdata/ibm932.h (__ibm932sb_to_ucs4_idx): Remove array. * iconvdata/ibm943.c: Include . (TRUE, FALSE): Remove macros. (BODY for FROM_LOOP): Remove unused variable rp1. (ONEBYTE_BODY): New macro. (BODY for TO_LOOP): Use bool. * iconvdata/ibm943.h (__ibm943sb_to_ucs4_idx): Remove array. * iconvdata/iso8859-1.c (ONEBYTE_BODY): New macro. * iconvdata/iso_6937-2.c (ONEBYTE_BODY): New macro. * iconvdata/iso_6937.c (ONEBYTE_BODY): New macro. * iconvdata/johab.c (ONEBYTE_BODY): New macro. * iconvdata/sjis.c (ONEBYTE_BODY): New macro. * iconvdata/shift_jisx0213.c (ONEBYTE_BODY): New macro. * iconvdata/t.61.c (ONEBYTE_BODY): New macro. * iconvdata/uhc.c (ONEBYTE_BODY): New macro. * iconvdata/gbbig5.c: Tweak comment. --- wcsmbs/btowc.c | 69 ++++++++++++++++++++++++++++++++++------------------------ 1 file changed, 41 insertions(+), 28 deletions(-) (limited to 'wcsmbs/btowc.c') diff --git a/wcsmbs/btowc.c b/wcsmbs/btowc.c index ca75e281e6..1ba0221403 100644 --- a/wcsmbs/btowc.c +++ b/wcsmbs/btowc.c @@ -30,12 +30,6 @@ wint_t __btowc (c) int c; { - wchar_t result; - struct __gconv_step_data data; - unsigned char inbuf[1]; - const unsigned char *inptr = inbuf; - size_t dummy; - int status; const struct gconv_fcts *fcts; /* If the parameter does not fit into one byte or it is the EOF value @@ -43,32 +37,51 @@ __btowc (c) if (c < SCHAR_MIN || c > UCHAR_MAX || c == EOF) return WEOF; - /* Tell where we want the result. */ - data.__outbuf = (unsigned char *) &result; - data.__outbufend = data.__outbuf + sizeof (wchar_t); - data.__invocation_counter = 0; - data.__internal_use = 1; - data.__flags = __GCONV_IS_LAST; - data.__statep = &data.__state; - data.__trans = NULL; - - /* Make sure we start in the initial state. */ - memset (&data.__state, '\0', sizeof (mbstate_t)); - /* Get the conversion functions. */ fcts = get_gconv_fcts (_NL_CURRENT_DATA (LC_CTYPE)); - /* Create the input string. */ - inbuf[0] = c; + if (__builtin_expect (fcts->towc_nsteps == 1, 1) + && __builtin_expect (fcts->towc->__btowc_fct != NULL, 1)) + { + /* Use the shortcut function. */ + return DL_CALL_FCT (fcts->towc->__btowc_fct, + (fcts->towc, (unsigned char) c)); + } + else + { + /* Fall back to the slow but generic method. */ + wchar_t result; + struct __gconv_step_data data; + unsigned char inbuf[1]; + const unsigned char *inptr = inbuf; + size_t dummy; + int status; + + /* Tell where we want the result. */ + data.__outbuf = (unsigned char *) &result; + data.__outbufend = data.__outbuf + sizeof (wchar_t); + data.__invocation_counter = 0; + data.__internal_use = 1; + data.__flags = __GCONV_IS_LAST; + data.__statep = &data.__state; + data.__trans = NULL; + + /* Make sure we start in the initial state. */ + memset (&data.__state, '\0', sizeof (mbstate_t)); + + /* Create the input string. */ + inbuf[0] = c; + + status = DL_CALL_FCT (fcts->towc->__fct, + (fcts->towc, &data, &inptr, inptr + 1, + NULL, &dummy, 0, 1)); - status = DL_CALL_FCT (fcts->towc->__fct, - (fcts->towc, &data, &inptr, inptr + 1, - NULL, &dummy, 0, 1)); - /* The conversion failed. */ - if (status != __GCONV_OK && status != __GCONV_FULL_OUTPUT - && status != __GCONV_EMPTY_INPUT) - result = WEOF; + if (status != __GCONV_OK && status != __GCONV_FULL_OUTPUT + && status != __GCONV_EMPTY_INPUT) + /* The conversion failed. */ + result = WEOF; - return result; + return result; + } } weak_alias (__btowc, btowc) -- cgit 1.4.1