From a482b5a5959240f5d196b32c4833ac48a03c02c3 Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Thu, 8 Feb 1996 10:00:34 +0000 Subject: * Makefile (subdirs): Added wcsmbs. * wcsmbs: New directory of wide char/multibyte char functions from drepper. --- wcsmbs/mbschr.c | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 wcsmbs/mbschr.c (limited to 'wcsmbs/mbschr.c') diff --git a/wcsmbs/mbschr.c b/wcsmbs/mbschr.c new file mode 100644 index 0000000000..f8a7d21857 --- /dev/null +++ b/wcsmbs/mbschr.c @@ -0,0 +1,60 @@ +/* Copyright (C) 1995 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 +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include +#include + +#define __need_wchar_t +#include + + +/* Find the first occurence of MBC in MBS. */ +char * +mbschr (mbs, mbc) + const char *mbs; + mbchar_t mbc; +{ + int clen; + wchar_t wc; + wchar_t c; + + /* Reset multibyte characters to their initial state. */ + (void) mblen ((char *) NULL, 0); + + clen = mbtowc (&wc, (char *) &mbc, MB_CUR_MAX); + if (clen < 0) + /* FIXME: search character is illegal. */ + return NULL; + else if (clen == 0) + wc = L'\0'; + + clen = 0; + do + { + mbs += clen; + clen = mbtowc (&c, mbs, MB_CUR_MAX); + } + while (clen > 0 && c != wc); + + if (clen < 0 || (clen == 0 && wc != L'\0')) + /* FIXME: clen < 0 means illegal character in string. */ + return NULL; + + return (char *) mbs; +} + -- cgit v1.2.3