mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-30 12:04:07 +00:00
120 lines
3.1 KiB
C
120 lines
3.1 KiB
C
/* $Header: /p/tcsh/cvsroot/tcsh/tc.nls.c,v 3.21 2006/09/26 16:45:30 christos Exp $ */
|
|
/*
|
|
* tc.nls.c: NLS handling
|
|
*/
|
|
/*-
|
|
* Copyright (c) 1980, 1991 The Regents of the University of California.
|
|
* 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.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
|
|
*/
|
|
#include "sh.h"
|
|
|
|
RCSID("$tcsh: tc.nls.c,v 3.21 2006/09/26 16:45:30 christos Exp $")
|
|
|
|
#ifdef WIDE_STRINGS
|
|
int
|
|
NLSWidth(Char c)
|
|
{
|
|
# ifdef HAVE_WCWIDTH
|
|
int l;
|
|
if (c & INVALID_BYTE)
|
|
return 1;
|
|
l = wcwidth(c);
|
|
return l >= 0 ? l : 0;
|
|
# else
|
|
return iswprint(c) != 0;
|
|
# endif
|
|
}
|
|
|
|
int
|
|
NLSStringWidth(const Char *s)
|
|
{
|
|
int w = 0, l;
|
|
Char c;
|
|
|
|
while (*s) {
|
|
c = *s++;
|
|
#ifdef HAVE_WCWIDTH
|
|
if ((l = wcwidth(c)) < 0)
|
|
l = 2;
|
|
#else
|
|
l = iswprint(c) != 0;
|
|
#endif
|
|
w += l;
|
|
}
|
|
return w;
|
|
}
|
|
#endif
|
|
|
|
Char *
|
|
NLSChangeCase(const Char *p, int mode)
|
|
{
|
|
Char c, *n, c2 = 0;
|
|
const Char *op = p;
|
|
|
|
for (; (c = *p) != 0; p++) {
|
|
if (mode == 0 && Islower(c)) {
|
|
c2 = Toupper(c);
|
|
break;
|
|
} else if (mode && Isupper(c)) {
|
|
c2 = Tolower(c);
|
|
break;
|
|
}
|
|
}
|
|
if (!*p)
|
|
return 0;
|
|
n = Strsave(op);
|
|
n[p - op] = c2;
|
|
return n;
|
|
}
|
|
|
|
int
|
|
NLSClassify(Char c, int nocomb)
|
|
{
|
|
int w;
|
|
if (c & INVALID_BYTE)
|
|
return NLSCLASS_ILLEGAL;
|
|
w = NLSWidth(c);
|
|
if ((w > 0 && !(Iscntrl(c) && (c & CHAR) < 0x100)) || (Isprint(c) && !nocomb))
|
|
return w;
|
|
if (Iscntrl(c) && (c & CHAR) < 0x100) {
|
|
if (c == '\n')
|
|
return NLSCLASS_NL;
|
|
if (c == '\t')
|
|
return NLSCLASS_TAB;
|
|
return NLSCLASS_CTRL;
|
|
}
|
|
#ifdef WIDE_STRINGS
|
|
if (c >= 0x1000000)
|
|
return NLSCLASS_ILLEGAL4;
|
|
if (c >= 0x10000)
|
|
return NLSCLASS_ILLEGAL3;
|
|
#endif
|
|
if (c >= 0x100)
|
|
return NLSCLASS_ILLEGAL2;
|
|
return NLSCLASS_ILLEGAL;
|
|
}
|