root/ext/mbstring/libmbfl/filters/mbfilter_sjis_mac.c

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DEFINITIONS

This source file includes following definitions.
  1. mbfl_filt_conv_sjis_mac_wchar
  2. mbfl_filt_conv_wchar_sjis_mac
  3. mbfl_filt_conv_sjis_mac_flush

/*
 * "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:
 *
 */
/*
 * the source code included in this files was separated from mbfilter_sjis_open.c
 * by Rui Hirokawa <hirokawa@php.net> on 25 July 2011.
 *
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "mbfilter.h"
#include "mbfilter_sjis_mac.h"

#include "unicode_table_cp932_ext.h"
#include "unicode_table_jis.h"

#include "sjis_mac2uni.h"

extern int mbfl_filt_ident_sjis(int c, mbfl_identify_filter *filter);
extern const unsigned char mblen_table_sjis[];

static int mbfl_filt_conv_sjis_mac_flush(mbfl_convert_filter *filter);

static const char *mbfl_encoding_sjis_mac_aliases[] = {"MacJapanese", "x-Mac-Japanese", NULL};

const mbfl_encoding mbfl_encoding_sjis_mac = {
        mbfl_no_encoding_sjis_mac,
        "SJIS-mac",
        "Shift_JIS",
        (const char *(*)[])&mbfl_encoding_sjis_mac_aliases,
        mblen_table_sjis,
        MBFL_ENCTYPE_MBCS | MBFL_ENCTYPE_GL_UNSAFE
};

const struct mbfl_identify_vtbl vtbl_identify_sjis_mac = {
        mbfl_no_encoding_sjis_mac,
        mbfl_filt_ident_common_ctor,
        mbfl_filt_ident_common_dtor,
        mbfl_filt_ident_sjis
};

const struct mbfl_convert_vtbl vtbl_sjis_mac_wchar = {
        mbfl_no_encoding_sjis_mac,
        mbfl_no_encoding_wchar,
        mbfl_filt_conv_common_ctor,
        mbfl_filt_conv_common_dtor,
        mbfl_filt_conv_sjis_mac_wchar,
        mbfl_filt_conv_common_flush
};

const struct mbfl_convert_vtbl vtbl_wchar_sjis_mac = {
        mbfl_no_encoding_wchar,
        mbfl_no_encoding_sjis_mac,
        mbfl_filt_conv_common_ctor,
        mbfl_filt_conv_common_dtor,
        mbfl_filt_conv_wchar_sjis_mac,
        mbfl_filt_conv_sjis_mac_flush
};

#define CK(statement)   do { if ((statement) < 0) return (-1); } while (0)

#define SJIS_ENCODE(c1,c2,s1,s2)        \
                do {                                            \
                        s1 = c1;                                \
                        s1--;                                   \
                        s1 >>= 1;                               \
                        if ((c1) < 0x5f) {              \
                                s1 += 0x71;                     \
                        } else {                                \
                                s1 += 0xb1;                     \
                        }                                               \
                        s2 = c2;                                \
                        if ((c1) & 1) {                 \
                                if ((c2) < 0x60) {      \
                                        s2--;                   \
                                }                                       \
                                s2 += 0x20;                     \
                        } else {                                \
                                s2 += 0x7e;                     \
                        }                                               \
                } while (0)

#define SJIS_DECODE(c1,c2,s1,s2)        \
                do {                                            \
                        s1 = c1;                                \
                        if (s1 < 0xa0) {                \
                                s1 -= 0x81;                     \
                        } else {                                \
                                s1 -= 0xc1;                     \
                        }                                               \
                        s1 <<= 1;                               \
                        s1 += 0x21;                             \
                        s2 = c2;                                \
                        if (s2 < 0x9f) {                \
                                if (s2 < 0x7f) {        \
                                        s2++;                   \
                                }                                       \
                                s2 -= 0x20;                     \
                        } else {                                \
                                s1++;                           \
                                s2 -= 0x7e;                     \
                        }                                               \
                } while (0)

/*
 * SJIS-mac => wchar
 */
int
mbfl_filt_conv_sjis_mac_wchar(int c, mbfl_convert_filter *filter)
{
        int i, j, n;
        int c1, s, s1, s2, w;

        switch (filter->status) {
        case 0:
                if (c >= 0 && c < 0x80 && c != 0x5c) {  /* latin */
                        CK((*filter->output_function)(c, filter->data));
                } else if (c > 0xa0 && c < 0xe0) {      /* kana */
                        CK((*filter->output_function)(0xfec0 + c, filter->data));
                } else if (c > 0x80 && c < 0xfd && c != 0xa0) { /* kanji first char */
                        filter->status = 1;
                        filter->cache = c;
                } else if (c == 0x5c) {
                        CK((*filter->output_function)(0x00a5, filter->data));                   
                } else if (c == 0x80) {
                        CK((*filter->output_function)(0x005c, filter->data));                   
                } else if (c == 0xa0) {
                        CK((*filter->output_function)(0x00a0, filter->data));                   
                } else if (c == 0xfd) {
                        CK((*filter->output_function)(0x00a9, filter->data));                   
                } else if (c == 0xfe) {
                        CK((*filter->output_function)(0x2122, filter->data));                   
                } else if (c == 0xff) {
                        CK((*filter->output_function)(0x2026, filter->data));
                        CK((*filter->output_function)(0xf87f, filter->data));
                } else {
                        w = c & MBFL_WCSGROUP_MASK;
                        w |= MBFL_WCSGROUP_THROUGH;
                        CK((*filter->output_function)(w, filter->data));
                }
                break;

        case 1:         /* kanji second char */
                filter->status = 0;
                c1 = filter->cache;
                if (c >= 0x40 && c <= 0xfc && c != 0x7f) {
                        w = 0;
                        SJIS_DECODE(c1, c, s1, s2);
                        s = (s1 - 0x21)*94 + s2 - 0x21;
                        if (s <= 0x89) {
                                if (s == 0x1c) {
                                        w = 0x2014;                 /* EM DASH */       
                                } else if (s == 0x1f) {
                                        w = 0xff3c;                     /* FULLWIDTH REVERSE SOLIDUS */
                                } else if (s == 0x20) {
                                        w = 0x301c;                     /* FULLWIDTH TILDE */
                                } else if (s == 0x21) {
                                        w = 0x2016;                     /* PARALLEL TO */
                                } else if (s == 0x3c) {
                                        w = 0x2212;                     /* FULLWIDTH HYPHEN-MINUS */
                                } else if (s == 0x50) {
                                        w = 0x00a2;                     /* FULLWIDTH CENT SIGN */
                                } else if (s == 0x51) {
                                        w = 0x00a3;                     /* FULLWIDTH POUND SIGN */
                                } else if (s == 0x89) {
                                        w = 0x00ac;                     /* FULLWIDTH NOT SIGN */
                                }
                        }

                        /* apple gaiji area 0x8540 - 0x886d */
                        if (w == 0) {
                                for (i=0; i<7; i++) {
                                        if (s >= code_tbl[i][0] && s <= code_tbl[i][1]) {
                                                w = s - code_tbl[i][0] + code_tbl[i][2];
                                                break;
                                        } 
                                }
                        }

                        if (w == 0) {

                                for (i=0; i<code_tbl_m_len; i++) {
                                        if (s == code_tbl_m[i][0]) {
                                                if (code_tbl_m[i][1] == 0xf860) {
                                                        n = 4;
                                                } else if (code_tbl_m[i][1] == 0xf861) {
                                                        n = 5;
                                                } else {
                                                        n = 6;
                                                }
                                                for (j=1; j<n-1; j++) {
                                                        CK((*filter->output_function)(code_tbl_m[i][j], filter->data));                                                 
                                                }
                                                w = code_tbl_m[i][n-1];
                                                break;
                                        }
                                }
                        }

                        if (w == 0) {
                                for (i=0; i<8; i++) {
                                        if (s >= code_ofst_tbl[i][0] && s <= code_ofst_tbl[i][1]) {
                                                w = code_map[i][s - code_ofst_tbl[i][0]];
                                                s2 = 0;
                                                if (s >= 0x043e && s <= 0x0441) {
                                                        s2 = 0xf87a;
                                                } else if (s == 0x03b1 || s == 0x03b7) {
                                                        s2 = 0xf87f;
                                                } else if (s == 0x04b8 || s == 0x04b9 || s == 0x04c4) {
                                                        s2 = 0x20dd;
                                                } else if (s == 0x1ed9 || s == 0x1eda || s == 0x1ee8 || s == 0x1ef3 ||
                                                                   (s >= 0x1ef5 && s <= 0x1efb) || s == 0x1f05 || s == 0x1f06 ||
                                                                   s == 0x1f18 || (s >= 0x1ff2 && s <= 0x20a5)) {
                                                        s2 = 0xf87e;
                                                }
                                                if (s2 > 0) {
                                                        CK((*filter->output_function)(w, filter->data));
                                                        w = s2;
                                                }
                                                break;
                                        }
                                }
                        }
                        
                        if (w == 0 && s >= 0 && s < jisx0208_ucs_table_size) {  /* X 0208 */
                                w = jisx0208_ucs_table[s];
                        }
                        
                        if (w <= 0) {
                                w = (s1 << 8) | s2;
                                w &= MBFL_WCSPLANE_MASK;
                                w |= MBFL_WCSPLANE_WINCP932;
                        }
                        CK((*filter->output_function)(w, filter->data));
                } else if ((c >= 0 && c < 0x21) || c == 0x7f) {         /* CTLs */
                        CK((*filter->output_function)(c, filter->data));
                } else {
                        w = (c1 << 8) | c;
                        w &= MBFL_WCSGROUP_MASK;
                        w |= MBFL_WCSGROUP_THROUGH;
                        CK((*filter->output_function)(w, filter->data));
                }
                break;

        default:
                filter->status = 0;
                break;
        }

        return c;
}

/*
 * wchar => SJIS-mac
 */
int
mbfl_filt_conv_wchar_sjis_mac(int c, mbfl_convert_filter *filter)
{
        int i;
        int c1, c2, s1, s2, mode;

        s1 = 0;
        s2 = 0;

        // a1: U+0000 -> U+046F
        // a2: U+2000 -> U+30FF
        //  i: U+4E00 -> U+9FFF
        //  r: U+FF00 -> U+FFFF

        switch (filter->status) {

        case 1:
                c1 = filter->cache;
                filter->cache = 0;
                filter->status = 0;

                s1 = 0;
                s2 = 0;

                if (c == 0xf87a) {
                        for (i=0;i<4;i++) {
                                if (c1 == s_form_tbl[i+34+3+3]) {
                                        s1 = s_form_sjis_tbl[i+34+3+3];
                                        break;
                                }
                        }
                        if (s1 <= 0) {
                                s2 = c1;
                        }
                } else if (c == 0x20dd) {
                        for (i=0;i<3;i++) {
                                if (c1 == s_form_tbl[i+34+3]) {
                                        s1 = s_form_sjis_tbl[i+34+3];
                                        break;
                                }
                        }
                        if (s1 <= 0) {
                                s2 = c1;
                        }
                } else if (c == 0xf87f) {
                        for (i=0;i<3;i++) {
                                if (c1 == s_form_tbl[i+34]) {
                                        s1 = s_form_sjis_tbl[i+34];
                                        break;
                                }
                        }
                        if (s1 <= 0) {
                                s2 = c1; s1 = -1;
                        }
                } else if (c == 0xf87e) {
                        for (i=0;i<34;i++) {
                                if (c1 == s_form_tbl[i]) {
                                        s1 = s_form_sjis_tbl[i];
                                        break;
                                }
                        }
                        if (s1 <= 0) {
                                s2 = c1; s1 = -1;
                        }
                } else {
                        s2 = c1;
                        s1 = c;
                }

                if (s2 > 0) {
                        for (i=0;i<s_form_tbl_len;i++) {
                                if (c1 == s_form_tbl[i]) {
                                        s1 = s_form_sjis_fallback_tbl[i];
                                        break;
                                }
                        }
                }

                if (s1 >= 0) {
                        if (s1 < 0x100) {
                                CK((*filter->output_function)(s1, filter->data));
                        } else {
                                CK((*filter->output_function)((s1 >> 8) & 0xff, filter->data));
                                CK((*filter->output_function)(s1 & 0xff, filter->data));
                        }
                } else {
                        if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
                                CK(mbfl_filt_conv_illegal_output(c, filter));
                        }                       
                }

                if (s2 <= 0 || s1 == -1) {
                        break;
                }

        case 0:

                if (c >= ucs_a1_jis_table_min && c < ucs_a1_jis_table_max) {
                        s1 = ucs_a1_jis_table[c - ucs_a1_jis_table_min];
                        if (c == 0x5c) {
                                s1 = 0x80;
                        } else if (c == 0xa9) {
                                s1 = 0xfd;
                        }
                } else if (c >= ucs_a2_jis_table_min && c < ucs_a2_jis_table_max) {
                        s1 = ucs_a2_jis_table[c - ucs_a2_jis_table_min];
                        if (c == 0x2122) {
                                s1 = 0xfe;
                        } else if (c == 0x2014) {
                                s1 = 0x213d;
                        } else if (c == 0x2116) {
                                s1 = 0x2c1d;
                        }
                } else if (c >= ucs_i_jis_table_min && c < ucs_i_jis_table_max) {
                        s1 = ucs_i_jis_table[c - ucs_i_jis_table_min];
                } else if (c >= ucs_r_jis_table_min && c < ucs_r_jis_table_max) {
                        s1 = ucs_r_jis_table[c - ucs_r_jis_table_min];
                }
                
                if (c >= 0x2000) {
                        for (i=0;i<s_form_tbl_len;i++) {
                                if (c == s_form_tbl[i]) {
                                        filter->status = 1;
                                        filter->cache = c;
                                        return c;
                                }
                        }

                        if (c == 0xf860 || c == 0xf861 || c == 0xf862) {
                                filter->status = 2;
                                filter->cache = c;
                                return c;                               
                        }
                }

                if (s1 <= 0) {
                        c1 = c & ~MBFL_WCSPLANE_MASK;
                        if (c1 == MBFL_WCSPLANE_WINCP932) {
                                s1 = c & MBFL_WCSPLANE_MASK;
                                s2 = 1;
                        } else if (c1 == MBFL_WCSPLANE_JIS0208) {
                                s1 = c & MBFL_WCSPLANE_MASK;
                        } else if (c1 == MBFL_WCSPLANE_JIS0212) {
                                s1 = c & MBFL_WCSPLANE_MASK;
                                s1 |= 0x8080;
                        } else if (c == 0xa0) {
                                s1 = 0x00a0;
                        } else if (c == 0xa5) {         /* YEN SIGN */
                                s1 = 0x216f;    /* FULLWIDTH YEN SIGN */
                        } else if (c == 0xff3c) {       /* FULLWIDTH REVERSE SOLIDUS */
                                s1 = 0x2140;
                        }
                }
                
                if (s1 <= 0) {
                        for (i=0; i<wchar2sjis_mac_r_tbl_len; i++) {
                                if (c >= wchar2sjis_mac_r_tbl[i][0] && c <= wchar2sjis_mac_r_tbl[i][1]) {
                                        s1 = c - wchar2sjis_mac_r_tbl[i][0] + wchar2sjis_mac_r_tbl[i][2];
                                        break;
                                }
                        }

                        if (s1 <= 0) {
                                for (i=0; i<wchar2sjis_mac_r_map_len; i++) {
                                        if (c >= wchar2sjis_mac_r_map[i][0] && c <= wchar2sjis_mac_r_map[i][1]) {
                                                s1 = wchar2sjis_mac_code_map[i][c-wchar2sjis_mac_r_map[i][0]]; 
                                                break;
                                        }                                       
                                }
                        }

                        if (s1 <= 0) {
                                for (i=0; i<wchar2sjis_mac_wchar_tbl_len ; i++) {
                                        if ( c == wchar2sjis_mac_wchar_tbl[i][0]) {
                                                s1 = wchar2sjis_mac_wchar_tbl[i][1] & 0xffff;
                                                break;
                                        }
                                }
                        }
                        
                        if (s1 > 0) {
                                c1 = s1/94+0x21;
                                c2 = s1-94*(c1-0x21)+0x21;
                                s1 = (c1 << 8) | c2;
                                s2 = 1;
                        }
                }
                
                if ((s1 <= 0) || (s1 >= 0x8080 && s2 == 0)) {   /* not found or X 0212 */
                        s1 = -1;
                        c1 = 0;
                        
                        if (c == 0) {
                                s1 = 0;
                        } else if (s1 <= 0) {
                                s1 = -1;
                        }
                }
                
                if (s1 >= 0) {
                        if (s1 < 0x100) { /* latin or kana */
                                CK((*filter->output_function)(s1, filter->data));
                        } else { /* kanji */
                                c1 = (s1 >> 8) & 0xff;
                                c2 = s1 & 0xff;
                                SJIS_ENCODE(c1, c2, s1, s2);
                                CK((*filter->output_function)(s1, filter->data));
                                CK((*filter->output_function)(s2, filter->data));
                        }
                } else {
                        if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
                                CK(mbfl_filt_conv_illegal_output(c, filter));
                        }
                }
                break;


        case 2:
                c1 = filter->cache; 
                filter->cache = 0;
                filter->status = 0;
                if (c1 == 0xf860) {
                        for (i=0; i<5; i++) {
                                if (c == code_tbl_m[i][2]) {
                                        filter->cache = c | 0x10000;
                                        filter->status = 3;
                                        break;
                                }
                        }
                } else if (c1 == 0xf861) {
                        for (i=0; i<3; i++) {
                                if (c == code_tbl_m[i+5][2]) {
                                        filter->cache = c | 0x20000;
                                        filter->status = 3;
                                        break;
                                }
                        }
                } else if (c1 == 0xf862) {
                        for (i=0; i<4; i++) {
                                if (c == code_tbl_m[i+5+3][2]) {
                                        filter->cache = c | 0x40000;
                                        filter->status = 3;
                                        break;
                                }
                        }
                }

                if (filter->status == 0 && filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
                        CK(mbfl_filt_conv_illegal_output(c1, filter));
                        CK(mbfl_filt_conv_illegal_output(c, filter));
                }
                
                break;

        case 3:
                s1 = 0;
                c1 = filter->cache & 0xffff; 
                mode = (filter->cache & 0xf0000) >> 16;

                filter->cache = 0;
                filter->status = 0;

                if (mode == 0x1) {
                        for (i=0; i<5; i++) {
                                if (c1 == code_tbl_m[i][2] && c == code_tbl_m[i][3]) {
                                        s1 = code_tbl_m[i][0];
                                        break;
                                }
                        }

                        if (s1 > 0) {
                                c1 = s1/94+0x21;
                                c2 = s1-94*(c1-0x21)+0x21;
                                SJIS_ENCODE(c1, c2, s1, s2);
                                CK((*filter->output_function)(s1, filter->data));
                                CK((*filter->output_function)(s2, filter->data));
                        }

                        if (s1 <= 0 && filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
                                CK(mbfl_filt_conv_illegal_output(0xf860, filter));
                                CK(mbfl_filt_conv_illegal_output(c1, filter));
                                CK(mbfl_filt_conv_illegal_output(c, filter));
                        }                       

                } else if (mode == 0x2) {
                        for (i=0; i<3; i++) {
                                if (c1 == code_tbl_m[i+5][2] && c == code_tbl_m[i+5][3]) {
                                        filter->cache = c | 0x20000;
                                        filter->status = 4;
                                        break;
                                }
                        }
                } else if (mode == 0x4) {
                        for (i=0; i<4; i++) {
                                if (c1 == code_tbl_m[i+8][2] && c == code_tbl_m[i+8][3]) {
                                        filter->cache = c | 0x40000;
                                        filter->status = 4;
                                        break;
                                }
                        }
                }
                break;

        case 4:
                s1 = 0;
                c1 = filter->cache & 0xffff; 
                mode = (filter->cache & 0xf0000) >> 16;

                filter->cache = 0;
                filter->status = 0;

                if (mode == 0x2) {
                        for (i=0; i<3; i++) {
                                if (c1 == code_tbl_m[i+5][3] && c == code_tbl_m[i+5][4]) {
                                        s1 = code_tbl_m[i+5][0];
                                        break;
                                }
                        }                       

                        if (s1 > 0) {
                                c1 = s1/94+0x21;
                                c2 = s1-94*(c1-0x21)+0x21;
                                SJIS_ENCODE(c1, c2, s1, s2);
                                CK((*filter->output_function)(s1, filter->data));
                                CK((*filter->output_function)(s2, filter->data));
                        }

                        if (s1 <= 0 && filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
                                CK(mbfl_filt_conv_illegal_output(0xf861, filter));
                                for (i=0; i<3; i++) {
                                        if (c1 == code_tbl_m[i+5][3]) {
                                                CK(mbfl_filt_conv_illegal_output(code_tbl_m[i+5][2], filter));
                                                break;
                                        }
                                }
                                CK(mbfl_filt_conv_illegal_output(c1, filter));
                                CK(mbfl_filt_conv_illegal_output(c, filter));
                        }                       
                } else if (mode == 0x4) {
                        for (i=0; i<4; i++) {
                                if (c1 == code_tbl_m[i+8][3] && c == code_tbl_m[i+8][4]) {
                                        filter->cache = c | 0x40000;
                                        filter->status = 5;
                                        break;
                                }
                        }               
                }
                break;

        case 5:
                s1 = 0;
                c1 = filter->cache & 0xffff; 
                mode = (filter->cache & 0xf0000) >> 16;

                filter->cache = 0;
                filter->status = 0;

                if (mode == 0x4) {
                        for (i=0; i<4; i++) {
                                if (c1 == code_tbl_m[i+8][4] && c == code_tbl_m[i+8][5]) {
                                        s1 = code_tbl_m[i+8][0];
                                        break;
                                }
                        }       

                        if (s1 > 0) {
                                c1 = s1/94+0x21;
                                c2 = s1-94*(c1-0x21)+0x21;
                                SJIS_ENCODE(c1, c2, s1, s2);
                                CK((*filter->output_function)(s1, filter->data));
                                CK((*filter->output_function)(s2, filter->data));
                        }

                        if (s1 <= 0 && filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
                                CK(mbfl_filt_conv_illegal_output(0xf862, filter));
                                for (i=0; i<4; i++) {
                                        if (c1 == code_tbl_m[i+8][4]) {
                                                CK(mbfl_filt_conv_illegal_output( code_tbl_m[i+8][2], filter));
                                                CK(mbfl_filt_conv_illegal_output( code_tbl_m[i+8][3], filter));
                                                break;
                                        }
                                }
                                CK(mbfl_filt_conv_illegal_output(c1, filter));
                                CK(mbfl_filt_conv_illegal_output(c, filter));
                        }
                }
                break;

        default:
                filter->status = 0;
                break;
        }
        return c;
}

static int
mbfl_filt_conv_sjis_mac_flush(mbfl_convert_filter *filter)
{
        int i, c1, s1 = 0;
        if (filter->status == 1 && filter->cache > 0) {
                c1 = filter->cache;
                for (i=0;i<s_form_tbl_len;i++) {
                        if (c1 == s_form_tbl[i]) {
                                s1 = s_form_sjis_fallback_tbl[i];
                                break;
                        }
                }
                if (s1 > 0) {
                        CK((*filter->output_function)((s1 >> 8) & 0xff, filter->data));
                        CK((*filter->output_function)(s1 & 0xff, filter->data));
                }
        }
        filter->cache = 0;
        filter->status = 0;

        if (filter->flush_function != NULL) {
                return (*filter->flush_function)(filter->data);
        }

        return 0;
}


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