File:
[ELWIX - Embedded LightWeight unIX -] /
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ext /
mbstring /
libmbfl /
filters /
mbfilter_armscii8.c
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1.1.1.1 (vendor branch):
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Tue Feb 21 23:47:57 2012 UTC (12 years, 6 months ago) by
misho
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/*
* "streamable kanji code filter and converter"
* Copyright (c) 1998-2002 HappySize, Inc. All rights reserved.
*
* LICENSE NOTICES
*
* This file is part of "streamable kanji code filter and converter",
* which is distributed under the terms of GNU Lesser General Public
* License (version 2) as published by the Free Software Foundation.
*
* This software 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with "streamable kanji code filter and converter";
* if not, write to the Free Software Foundation, Inc., 59 Temple Place,
* Suite 330, Boston, MA 02111-1307 USA
*
* The author of this file: Hayk Chamyan <hamshen@gmail.com>
*
*/
/*
* "armenian code filter and converter"
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "mbfilter.h"
#include "mbfilter_armscii8.h"
#include "unicode_table_armscii8.h"
static int mbfl_filt_ident_armscii8(int c, mbfl_identify_filter *filter);
static const char *mbfl_encoding_armscii8_aliases[] = {"ArmSCII-8", "ArmSCII8", "ARMSCII-8", "ARMSCII8", NULL};
const mbfl_encoding mbfl_encoding_armscii8 = {
mbfl_no_encoding_armscii8,
"ArmSCII-8",
"ArmSCII-8",
(const char *(*)[])&mbfl_encoding_armscii8_aliases,
NULL,
MBFL_ENCTYPE_SBCS
};
const struct mbfl_identify_vtbl vtbl_identify_armscii8 = {
mbfl_no_encoding_armscii8,
mbfl_filt_ident_common_ctor,
mbfl_filt_ident_common_dtor,
mbfl_filt_ident_armscii8
};
const struct mbfl_convert_vtbl vtbl_wchar_armscii8 = {
mbfl_no_encoding_wchar,
mbfl_no_encoding_armscii8,
mbfl_filt_conv_common_ctor,
mbfl_filt_conv_common_dtor,
mbfl_filt_conv_wchar_armscii8,
mbfl_filt_conv_common_flush
};
const struct mbfl_convert_vtbl vtbl_armscii8_wchar = {
mbfl_no_encoding_armscii8,
mbfl_no_encoding_wchar,
mbfl_filt_conv_common_ctor,
mbfl_filt_conv_common_dtor,
mbfl_filt_conv_armscii8_wchar,
mbfl_filt_conv_common_flush
};
#define CK(statement) do { if ((statement) < 0) return (-1); } while (0)
/*
* armscii8 => wchar
*/
int mbfl_filt_conv_armscii8_wchar(int c, mbfl_convert_filter *filter)
{
int s;
if (c >= 0 && c < armscii8_ucs_table_min) {
s = c;
} else if (c >= armscii8_ucs_table_min && c < 0x100) {
s = armscii8_ucs_table[c - armscii8_ucs_table_min];
if (s <= 0) {
s = c;
s &= MBFL_WCSPLANE_MASK;
s |= MBFL_WCSPLANE_ARMSCII8;
}
} else {
s = c;
s &= MBFL_WCSGROUP_MASK;
s |= MBFL_WCSGROUP_THROUGH;
}
CK((*filter->output_function)(s, filter->data));
return c;
}
/*
* wchar => armscii8
*/
int mbfl_filt_conv_wchar_armscii8(int c, mbfl_convert_filter *filter)
{
int s, n;
if (c >= 0x28 && c < 0x30) {
s = ucs_armscii8_table[c-0x28];
} else if (c < armscii8_ucs_table_min) {
s = c;
} else {
s = -1;
n = armscii8_ucs_table_len-1;
while (n >= 0) {
if (c == armscii8_ucs_table[n]) {
s = armscii8_ucs_table_min + n;
break;
}
n--;
}
if (s <= 0 && (c & ~MBFL_WCSPLANE_MASK) == MBFL_WCSPLANE_ARMSCII8) {
s = c & MBFL_WCSPLANE_MASK;
}
}
if (s >= 0) {
CK((*filter->output_function)(s, filter->data));
} else {
if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
CK(mbfl_filt_conv_illegal_output(c, filter));
}
}
return c;
}
static int mbfl_filt_ident_armscii8(int c, mbfl_identify_filter *filter)
{
if (c >= armscii8_ucs_table_min && c <= 0xff)
filter->flag = 0;
else
filter->flag = 1; /* not it */
return c;
}
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