1
0
Fork 0
mirror of git://git.code.sf.net/p/cdesktopenv/code synced 2025-03-09 15:50:02 +00:00
cde/cde/programs/nsgmls/CharsetInfo.C
2018-04-28 12:30:20 -06:00

156 lines
3.9 KiB
C

/*
* CDE - Common Desktop Environment
*
* Copyright (c) 1993-2012, The Open Group. All rights reserved.
*
* These libraries and programs are free software; you can
* redistribute them and/or modify them under the terms of the GNU
* Lesser General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* These libraries and programs are distributed in the hope that
* they will be useful, but WITHOUT ANY WARRANTY; without even the
* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with these libraries and programs; if not, write
* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
* Floor, Boston, MA 02110-1301 USA
*/
/* $XConsortium: CharsetInfo.C /main/1 1996/07/29 16:47:17 cde-hp $ */
// Copyright (c) 1994 James Clark
// See the file COPYING for copying permission.
#ifdef __GNUG__
#pragma implementation
#endif
#include "splib.h"
#include "CharsetInfo.h"
#include "ISet.h"
#include "constant.h"
#ifdef SP_NAMESPACE
namespace SP_NAMESPACE {
#endif
CharsetInfo::CharsetInfo(const UnivCharsetDesc &desc)
: desc_(desc)
{
// FIXME remove mappings from desc for characters greater charMax
init();
}
CharsetInfo::CharsetInfo()
{
for (size_t i = 0; i < nSmall; i++) {
smallUnivValid_[i] = 0;
smallDescValid_[i] = 0;
}
}
void CharsetInfo::set(const UnivCharsetDesc &desc)
{
desc_ = desc;
init();
}
void CharsetInfo::init()
{
size_t i;
for (i = 0; i < nSmall; i++) {
smallUnivValid_[i] = 0;
smallDescValid_[i] = 0;
}
UnivCharsetDescIter iter(desc_);
WideChar descMin, descMax;
UnivChar univMin;
while (iter.next(descMin, descMax, univMin)) {
WideChar j = descMin;
do {
UnivChar k = univMin + (j - descMin);
if (k >= nSmall)
break;
if (!smallUnivValid_[k]) {
smallUnivValid_[k] = 1;
smallUnivToDesc_[k] = j;
}
else
smallUnivValid_[k] = 2;
} while (j++ != descMax);
j = descMin;
do {
if (j >= nSmall)
break;
if (!smallDescValid_[j]) {
smallDescValid_[j] = 1;
smallDescToUniv_[j] = univMin + (j - descMin);
}
} while (j++ != descMax);
}
// These are the characters that the ANSI C
// standard guarantees will be in the basic execution
// character set.
static char execChars[] =
"\t\n\r "
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"
"0123456789"
"!\"#%&'()*+,-./:"
";<=>?[\\]^_{|}~";
// These are the corresponding ISO 646 codes.
static char univCodes[] = {
9, 10, 13, 32,
65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77,
78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90,
97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109,
110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122,
48, 49, 50, 51, 52, 53, 54, 55, 56, 57,
33, 34, 35, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 58,
59, 60, 61, 62, 63, 91, 92, 93, 94, 95, 123, 124, 125, 126,
};
for (i = 0; execChars[i] != '\0'; i++) {
WideChar c;
ISet<WideChar> set;
if (univToDesc(univCodes[i], c, set) > 0 && c <= Char(-1))
execToDesc_[(unsigned char)execChars[i]] = Char(c);
}
}
void CharsetInfo::getDescSet(ISet<Char> &set) const
{
UnivCharsetDescIter iter(desc_);
WideChar descMin, descMax;
UnivChar univMin;
while (iter.next(descMin, descMax, univMin)) {
if (descMin > charMax)
break;
if (descMax > charMax)
descMax = charMax;
set.addRange(Char(descMin), Char(descMax));
}
}
int CharsetInfo::digitWeight(Char c) const
{
for (int i = 0; i < 10; i++)
if (c == execToDesc('0' + i))
return i;
return -1;
}
StringC CharsetInfo::execToDesc(const char *s) const
{
StringC result;
while (*s != '\0')
result += execToDesc(*s++);
return result;
}
#ifdef SP_NAMESPACE
}
#endif