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Annotation of embedaddon/php/ext/mbstring/libmbfl/filters/mbfilter_armscii8.c, revision 1.1

1.1     ! misho       1: /*
        !             2:  * "streamable kanji code filter and converter"
        !             3:  * Copyright (c) 1998-2002 HappySize, Inc. All rights reserved.
        !             4:  *
        !             5:  * LICENSE NOTICES
        !             6:  *
        !             7:  * This file is part of "streamable kanji code filter and converter",
        !             8:  * which is distributed under the terms of GNU Lesser General Public
        !             9:  * License (version 2) as published by the Free Software Foundation.
        !            10:  *
        !            11:  * This software is distributed in the hope that it will be useful,
        !            12:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            14:  * GNU Lesser General Public License for more details.
        !            15:  *
        !            16:  * You should have received a copy of the GNU Lesser General Public
        !            17:  * License along with "streamable kanji code filter and converter";
        !            18:  * if not, write to the Free Software Foundation, Inc., 59 Temple Place,
        !            19:  * Suite 330, Boston, MA  02111-1307  USA
        !            20:  *
        !            21:  * The author of this file: Hayk Chamyan <hamshen@gmail.com>
        !            22:  *  
        !            23:  */
        !            24: 
        !            25: /*
        !            26:  * "armenian code filter and converter"
        !            27:  */
        !            28: 
        !            29: #ifdef HAVE_CONFIG_H
        !            30: #include "config.h"
        !            31: #endif
        !            32: 
        !            33: #include "mbfilter.h"
        !            34: #include "mbfilter_armscii8.h"
        !            35: #include "unicode_table_armscii8.h"
        !            36: 
        !            37: static int mbfl_filt_ident_armscii8(int c, mbfl_identify_filter *filter);
        !            38: 
        !            39: static const char *mbfl_encoding_armscii8_aliases[] = {"ArmSCII-8", "ArmSCII8", "ARMSCII-8", "ARMSCII8", NULL};
        !            40: 
        !            41: const mbfl_encoding mbfl_encoding_armscii8 = {
        !            42:        mbfl_no_encoding_armscii8,
        !            43:        "ArmSCII-8",
        !            44:        "ArmSCII-8",
        !            45:        (const char *(*)[])&mbfl_encoding_armscii8_aliases,
        !            46:        NULL,
        !            47:        MBFL_ENCTYPE_SBCS
        !            48: };
        !            49: 
        !            50: const struct mbfl_identify_vtbl vtbl_identify_armscii8 = {
        !            51:        mbfl_no_encoding_armscii8,
        !            52:        mbfl_filt_ident_common_ctor,
        !            53:        mbfl_filt_ident_common_dtor,
        !            54:        mbfl_filt_ident_armscii8
        !            55: };
        !            56: 
        !            57: const struct mbfl_convert_vtbl vtbl_wchar_armscii8 = {
        !            58:        mbfl_no_encoding_wchar,
        !            59:        mbfl_no_encoding_armscii8,
        !            60:        mbfl_filt_conv_common_ctor,
        !            61:        mbfl_filt_conv_common_dtor,
        !            62:        mbfl_filt_conv_wchar_armscii8,
        !            63:        mbfl_filt_conv_common_flush
        !            64: };
        !            65: 
        !            66: const struct mbfl_convert_vtbl vtbl_armscii8_wchar = {
        !            67:        mbfl_no_encoding_armscii8,
        !            68:        mbfl_no_encoding_wchar,
        !            69:        mbfl_filt_conv_common_ctor,
        !            70:        mbfl_filt_conv_common_dtor,
        !            71:        mbfl_filt_conv_armscii8_wchar,
        !            72:        mbfl_filt_conv_common_flush
        !            73: };
        !            74: 
        !            75: #define CK(statement)  do { if ((statement) < 0) return (-1); } while (0)
        !            76: 
        !            77: /*
        !            78:  * armscii8 => wchar
        !            79:  */
        !            80: int mbfl_filt_conv_armscii8_wchar(int c, mbfl_convert_filter *filter)
        !            81: {
        !            82:        int s;
        !            83: 
        !            84:        if (c >= 0 && c < armscii8_ucs_table_min) {
        !            85:                s = c;
        !            86:        } else if (c >= armscii8_ucs_table_min && c < 0x100) {
        !            87:                s = armscii8_ucs_table[c - armscii8_ucs_table_min];
        !            88:                if (s <= 0) {
        !            89:                        s = c;
        !            90:                        s &= MBFL_WCSPLANE_MASK;
        !            91:                        s |= MBFL_WCSPLANE_ARMSCII8;
        !            92:                }
        !            93:        } else {
        !            94:                s = c;
        !            95:                s &= MBFL_WCSGROUP_MASK;
        !            96:                s |= MBFL_WCSGROUP_THROUGH;
        !            97:        }
        !            98: 
        !            99:        CK((*filter->output_function)(s, filter->data));
        !           100: 
        !           101:        return c;
        !           102: }
        !           103: 
        !           104: /*
        !           105:  * wchar => armscii8
        !           106:  */
        !           107: int mbfl_filt_conv_wchar_armscii8(int c, mbfl_convert_filter *filter)
        !           108: {
        !           109: 
        !           110:        int s, n;
        !           111: 
        !           112:        if (c >= 0x28 && c < 0x30) {
        !           113:                s = ucs_armscii8_table[c-0x28];
        !           114:        } else if (c < armscii8_ucs_table_min) {
        !           115:                s = c;
        !           116:        } else {
        !           117:                s = -1;
        !           118:                n = armscii8_ucs_table_len-1;
        !           119:                while (n >= 0) {
        !           120:                        if (c == armscii8_ucs_table[n]) {
        !           121:                                s = armscii8_ucs_table_min + n;
        !           122:                                break;
        !           123:                        }
        !           124:                        n--;
        !           125:                }
        !           126:                if (s <= 0 && (c & ~MBFL_WCSPLANE_MASK) == MBFL_WCSPLANE_ARMSCII8) {
        !           127:                        s = c & MBFL_WCSPLANE_MASK;
        !           128:                }
        !           129:        }
        !           130: 
        !           131:        if (s >= 0) {
        !           132:                CK((*filter->output_function)(s, filter->data));
        !           133:        } else {
        !           134:                if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
        !           135:                        CK(mbfl_filt_conv_illegal_output(c, filter));
        !           136:                }
        !           137:        }
        !           138: 
        !           139:        return c;
        !           140: }
        !           141: 
        !           142: static int mbfl_filt_ident_armscii8(int c, mbfl_identify_filter *filter)
        !           143: {
        !           144:        if (c >= armscii8_ucs_table_min && c <= 0xff)
        !           145:                filter->flag = 0;
        !           146:        else
        !           147:                filter->flag = 1; /* not it */
        !           148:        return c;
        !           149: }