Annotation of embedaddon/php/ext/mbstring/libmbfl/filters/mbfilter_hz.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:
! 22: *
! 23: */
! 24: /*
! 25: * The source code included in this files was separated from mbfilter_cn.c
! 26: * by moriyoshi koizumi <moriyoshi@php.net> on 4 dec 2002.
! 27: *
! 28: */
! 29:
! 30: #ifdef HAVE_CONFIG_H
! 31: #include "config.h"
! 32: #endif
! 33:
! 34: #include "mbfilter.h"
! 35: #include "mbfilter_hz.h"
! 36:
! 37: #include "unicode_table_cp936.h"
! 38:
! 39: static int mbfl_filt_ident_hz(int c, mbfl_identify_filter *filter);
! 40:
! 41: const mbfl_encoding mbfl_encoding_hz = {
! 42: mbfl_no_encoding_hz,
! 43: "HZ",
! 44: "HZ-GB-2312",
! 45: NULL,
! 46: NULL,
! 47: MBFL_ENCTYPE_MBCS | MBFL_ENCTYPE_SHFTCODE
! 48: };
! 49:
! 50: const struct mbfl_identify_vtbl vtbl_identify_hz = {
! 51: mbfl_no_encoding_hz,
! 52: mbfl_filt_ident_common_ctor,
! 53: mbfl_filt_ident_common_dtor,
! 54: mbfl_filt_ident_hz
! 55: };
! 56:
! 57: const struct mbfl_convert_vtbl vtbl_hz_wchar = {
! 58: mbfl_no_encoding_hz,
! 59: mbfl_no_encoding_wchar,
! 60: mbfl_filt_conv_common_ctor,
! 61: mbfl_filt_conv_common_dtor,
! 62: mbfl_filt_conv_hz_wchar,
! 63: mbfl_filt_conv_common_flush
! 64: };
! 65:
! 66: const struct mbfl_convert_vtbl vtbl_wchar_hz = {
! 67: mbfl_no_encoding_wchar,
! 68: mbfl_no_encoding_hz,
! 69: mbfl_filt_conv_common_ctor,
! 70: mbfl_filt_conv_common_dtor,
! 71: mbfl_filt_conv_wchar_hz,
! 72: mbfl_filt_conv_any_hz_flush
! 73: };
! 74:
! 75: #define CK(statement) do { if ((statement) < 0) return (-1); } while (0)
! 76:
! 77: /*
! 78: * HZ => wchar
! 79: */
! 80: int
! 81: mbfl_filt_conv_hz_wchar(int c, mbfl_convert_filter *filter)
! 82: {
! 83: int c1, s, w;
! 84:
! 85: switch (filter->status & 0xf) {
! 86: /* case 0x00: ASCII */
! 87: /* case 0x10: GB2312 */
! 88: case 0:
! 89: if (c == 0x7e) {
! 90: filter->status += 2;
! 91: } else if (filter->status == 0x10 && c > 0x20 && c < 0x7f) { /* DBCS first char */
! 92: filter->cache = c;
! 93: filter->status += 1;
! 94: } else if (c >= 0 && c < 0x80) { /* latin, CTLs */
! 95: CK((*filter->output_function)(c, filter->data));
! 96: } else {
! 97: w = c & MBFL_WCSGROUP_MASK;
! 98: w |= MBFL_WCSGROUP_THROUGH;
! 99: CK((*filter->output_function)(w, filter->data));
! 100: }
! 101: break;
! 102:
! 103: /* case 0x11: GB2312 second char */
! 104: case 1:
! 105: filter->status &= ~0xf;
! 106: c1 = filter->cache;
! 107: if (c1 > 0x20 && c1 < 0x7f && c > 0x20 && c < 0x7f) {
! 108: s = (c1 - 1)*192 + c + 0x40; /* GB2312 */
! 109: if (s >= 0 && s < cp936_ucs_table_size) {
! 110: w = cp936_ucs_table[s];
! 111: } else {
! 112: w = 0;
! 113: }
! 114: if (w <= 0) {
! 115: w = (c1 << 8) | c;
! 116: w &= MBFL_WCSPLANE_MASK;
! 117: w |= MBFL_WCSPLANE_GB2312;
! 118: }
! 119: CK((*filter->output_function)(w, filter->data));
! 120: } else if ((c >= 0 && c < 0x21) || c == 0x7f) { /* CTLs */
! 121: CK((*filter->output_function)(c, filter->data));
! 122: } else {
! 123: w = (c1 << 8) | c;
! 124: w &= MBFL_WCSGROUP_MASK;
! 125: w |= MBFL_WCSGROUP_THROUGH;
! 126: CK((*filter->output_function)(w, filter->data));
! 127: }
! 128: break;
! 129:
! 130: /* '~' */
! 131: case 2:
! 132: if (c == 0x7d) { /* '}' */
! 133: filter->status = 0x0;
! 134: } else if (c == 0x7b) { /* '{' */
! 135: filter->status = 0x10;
! 136: } else if (c == 0x7e) { /* '~' */
! 137: filter->status = 0x0;
! 138: CK((*filter->output_function)(0x007e, filter->data));
! 139: }
! 140: break;
! 141:
! 142: default:
! 143: filter->status = 0;
! 144: break;
! 145: }
! 146:
! 147: return c;
! 148: }
! 149:
! 150: /*
! 151: * wchar => HZ
! 152: */
! 153: int
! 154: mbfl_filt_conv_wchar_hz(int c, mbfl_convert_filter *filter)
! 155: {
! 156: int s;
! 157:
! 158: s = 0;
! 159: if (c >= ucs_a1_cp936_table_min && c < ucs_a1_cp936_table_max) {
! 160: s = ucs_a1_cp936_table[c - ucs_a1_cp936_table_min];
! 161: } else if (c >= ucs_a2_cp936_table_min && c < ucs_a2_cp936_table_max) {
! 162: s = ucs_a2_cp936_table[c - ucs_a2_cp936_table_min];
! 163: } else if (c >= ucs_a3_cp936_table_min && c < ucs_a3_cp936_table_max) {
! 164: s = ucs_a3_cp936_table[c - ucs_a3_cp936_table_min];
! 165: } else if (c >= ucs_i_cp936_table_min && c < ucs_i_cp936_table_max) {
! 166: s = ucs_i_cp936_table[c - ucs_i_cp936_table_min];
! 167: } else if (c >= ucs_hff_cp936_table_min && c < ucs_hff_cp936_table_max) {
! 168: s = ucs_hff_cp936_table[c - ucs_hff_cp936_table_min];
! 169: }
! 170: if (s & 0x8000) {
! 171: s -= 0x8080;
! 172: }
! 173:
! 174: if (s <= 0) {
! 175: if (c == 0) {
! 176: s = 0;
! 177: } else if (s <= 0) {
! 178: s = -1;
! 179: }
! 180: } else if ((s >= 0x80 && s < 0x2121) || (s > 0x8080)) {
! 181: s = -1;
! 182: }
! 183: if (s >= 0) {
! 184: if (s < 0x80) { /* ASCII */
! 185: if ((filter->status & 0xff00) != 0) {
! 186: CK((*filter->output_function)(0x7e, filter->data)); /* '~' */
! 187: CK((*filter->output_function)(0x7d, filter->data)); /* '}' */
! 188: }
! 189: filter->status = 0;
! 190: if (s == 0x7e){
! 191: CK((*filter->output_function)(0x7e, filter->data));
! 192: }
! 193: CK((*filter->output_function)(s, filter->data));
! 194: } else { /* GB 2312-80 */
! 195: if ((filter->status & 0xff00) != 0x200) {
! 196: CK((*filter->output_function)(0x7e, filter->data)); /* '~' */
! 197: CK((*filter->output_function)(0x7b, filter->data)); /* '{' */
! 198: }
! 199: filter->status = 0x200;
! 200: CK((*filter->output_function)((s >> 8) & 0x7f, filter->data));
! 201: CK((*filter->output_function)(s & 0x7f, filter->data));
! 202: }
! 203: } else {
! 204: if (filter->illegal_mode != MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE) {
! 205: CK(mbfl_filt_conv_illegal_output(c, filter));
! 206: }
! 207: }
! 208:
! 209: return c;
! 210: }
! 211:
! 212: int
! 213: mbfl_filt_conv_any_hz_flush(mbfl_convert_filter *filter)
! 214: {
! 215: /* back to latin */
! 216: if ((filter->status & 0xff00) != 0) {
! 217: CK((*filter->output_function)(0x7e, filter->data)); /* ~ */
! 218: CK((*filter->output_function)(0x7d, filter->data)); /* '{' */
! 219: }
! 220: filter->status &= 0xff;
! 221: return 0;
! 222: }
! 223:
! 224: static int mbfl_filt_ident_hz(int c, mbfl_identify_filter *filter)
! 225: {
! 226: switch (filter->status & 0xf) {
! 227: /* case 0x00: ASCII */
! 228: /* case 0x10: GB2312 */
! 229: case 0:
! 230: if (c == 0x7e) {
! 231: filter->status += 2;
! 232: } else if (filter->status == 0x10 && c > 0x20 && c < 0x7f) { /* DBCS first char */
! 233: filter->status += 1;
! 234: } else if (c >= 0 && c < 0x80) { /* latin, CTLs */
! 235: ;
! 236: } else {
! 237: filter->flag = 1; /* bad */
! 238: }
! 239: break;
! 240:
! 241: /* case 0x11: GB2312 second char */
! 242: case 1:
! 243: filter->status &= ~0xf;
! 244: if (c < 0x21 || c > 0x7e) { /* bad */
! 245: filter->flag = 1;
! 246: }
! 247: break;
! 248:
! 249: case 2:
! 250: if (c == 0x7d) { /* '}' */
! 251: filter->status = 0;
! 252: } else if (c == 0x7b) { /* '{' */
! 253: filter->status = 0x10;
! 254: } else if (c == 0x7e) { /* '~' */
! 255: filter->status = 0;
! 256: } else {
! 257: filter->flag = 1; /* bad */
! 258: filter->status &= ~0xf;
! 259: }
! 260: break;
! 261:
! 262: default:
! 263: filter->status = 0;
! 264: break;
! 265: }
! 266:
! 267: return c;
! 268: }
! 269:
! 270:
! 271: /*
! 272: * Local variables:
! 273: * tab-width: 4
! 274: * c-basic-offset: 4
! 275: * End:
! 276: */
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to mbfilter_hz.c CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / php / ext / mbstring / libmbfl / filters