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author | tjr <tjr@FreeBSD.org> | 2004-07-08 06:43:37 +0000 |
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committer | tjr <tjr@FreeBSD.org> | 2004-07-08 06:43:37 +0000 |
commit | 3a9d81b253cf3999ea62ce29e53a7c1e58396894 (patch) | |
tree | 6b88325e31aceec129e4a7871658983a62d5240a /lib/libc/locale/nextwctype.3 | |
parent | 9cdb603498b8b9bb1d5120526a885118481467b5 (diff) | |
download | FreeBSD-src-3a9d81b253cf3999ea62ce29e53a7c1e58396894.zip FreeBSD-src-3a9d81b253cf3999ea62ce29e53a7c1e58396894.tar.gz |
Add a function to iterate over all characters in a particular character
class. This is necessary in order to implement tr(1) efficiently in
multibyte locales, since the brute force method of finding all characters
in a class is infeasible with a 32-bit (or wider) wchar_t.
Diffstat (limited to 'lib/libc/locale/nextwctype.3')
-rw-r--r-- | lib/libc/locale/nextwctype.3 | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/lib/libc/locale/nextwctype.3 b/lib/libc/locale/nextwctype.3 new file mode 100644 index 0000000..2d9acd1 --- /dev/null +++ b/lib/libc/locale/nextwctype.3 @@ -0,0 +1,58 @@ +.\" +.\" Copyright (c) 2004 Tim J. Robbins +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd July 8, 2004 +.Dt NEXTWCTYPE 3 +.Os +.Sh NAME +.Nm nextwctype +.Nd "iterate through character classes" +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In wctype.h +.Ft wint_t +.Fo nextwctype +.Fa "wint_t ch" "wctype_t wct" +.Fc +.Sh DESCRIPTION +The +.Fn nextwctype +function determines the next character after +.Fa ch +that is a member of character class +.Fa wct . +If +.Fa ch +is \-1, the search begins at the first member of +.Fa wct . +.Sh RETURN VALUES +The +.Fn nextwctype +functions returns the next character, or \-1 if there are no more. +.Sh SEE ALSO +.Xr wctype 3 |