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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 part: Marcus Boerger <helly@php.net>
22: *
23: */
24: /*
25: * The source code included in this files was separated from mbfilter.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: #ifdef HAVE_STRING_H
35: #include <string.h>
36: #endif
37:
38: #ifdef HAVE_STRINGS_H
39: #include <strings.h>
40: #endif
41:
42: #include "mbfilter.h"
43: #include "mbfilter_htmlent.h"
44: #include "html_entities.h"
45:
46: static const int htmlentitifieds[256] = {
47: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
48: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
49: 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0,
50: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0,
51: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
52: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
53: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
54: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
55: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
56: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
57: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
58: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
59: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
60: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
61: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
62: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
63: };
64:
65: static const char *mbfl_encoding_html_ent_aliases[] = {"HTML", "html", NULL};
66:
67: const mbfl_encoding mbfl_encoding_html_ent = {
68: mbfl_no_encoding_html_ent,
69: "HTML-ENTITIES",
70: "HTML-ENTITIES",
71: (const char *(*)[])&mbfl_encoding_html_ent_aliases,
72: NULL,
1.1.1.2 ! misho 73: MBFL_ENCTYPE_ENC_STRM | MBFL_ENCTYPE_GL_UNSAFE
1.1 misho 74: };
75:
76: const struct mbfl_convert_vtbl vtbl_wchar_html = {
77: mbfl_no_encoding_wchar,
78: mbfl_no_encoding_html_ent,
79: mbfl_filt_conv_common_ctor,
80: mbfl_filt_conv_common_dtor,
81: mbfl_filt_conv_html_enc,
82: mbfl_filt_conv_html_enc_flush
83: };
84:
85: const struct mbfl_convert_vtbl vtbl_html_wchar = {
86: mbfl_no_encoding_html_ent,
87: mbfl_no_encoding_wchar,
88: mbfl_filt_conv_html_dec_ctor,
89: mbfl_filt_conv_html_dec_dtor,
90: mbfl_filt_conv_html_dec,
91: mbfl_filt_conv_html_dec_flush };
92:
93:
94: #define CK(statement) do { if ((statement) < 0) return (-1); } while (0)
95:
96: /*
97: * any => HTML
98: */
99: int mbfl_filt_conv_html_enc(int c, mbfl_convert_filter *filter)
100: {
101: int tmp[64];
102: int i;
103: unsigned int uc;
104: const mbfl_html_entity_entry *e;
105:
106: if (c < sizeof(htmlentitifieds) / sizeof(htmlentitifieds[0]) &&
107: htmlentitifieds[c] != 1) {
108: CK((*filter->output_function)(c, filter->data));
109: } else {
110: CK((*filter->output_function)('&', filter->data));
111: for (i = 0; (e = &mbfl_html_entity_list[i])->name != NULL; i++) {
112: if (c == e->code) {
113: char *p;
114:
115: for (p = e->name; *p != '\0'; p++) {
116: CK((*filter->output_function)((int)*p, filter->data));
117: }
118: goto last;
119: }
120: }
121:
122: {
123: int *p = tmp + sizeof(tmp) / sizeof(tmp[0]);
124:
125: CK((*filter->output_function)('#', filter->data));
126:
127: uc = (unsigned int)c;
128:
129: *(--p) = '\0';
130: do {
131: *(--p) = "0123456789"[uc % 10];
132: uc /= 10;
133: } while (uc);
134:
135: for (; *p != '\0'; p++) {
136: CK((*filter->output_function)(*p, filter->data));
137: }
138: }
139: last:
140: CK((*filter->output_function)(';', filter->data));
141: }
142: return c;
143: }
144:
145: int mbfl_filt_conv_html_enc_flush(mbfl_convert_filter *filter)
146: {
147: filter->status = 0;
148: filter->opaque = NULL;
149:
150: if (filter->flush_function != NULL) {
151: (*filter->flush_function)(filter->data);
152: }
153:
154: return 0;
155: }
156:
157: /*
158: * HTML => any
159: */
160: #define html_enc_buffer_size 16
161: static const char html_entity_chars[] = "#0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
162:
163: void mbfl_filt_conv_html_dec_ctor(mbfl_convert_filter *filter)
164: {
165: filter->status = 0;
166: filter->opaque = mbfl_malloc(html_enc_buffer_size+1);
167: }
168:
169: void mbfl_filt_conv_html_dec_dtor(mbfl_convert_filter *filter)
170: {
171: filter->status = 0;
172: if (filter->opaque)
173: {
174: mbfl_free((void*)filter->opaque);
175: }
176: filter->opaque = NULL;
177: }
178:
179: int mbfl_filt_conv_html_dec(int c, mbfl_convert_filter *filter)
180: {
181: int pos, ent = 0;
182: mbfl_html_entity_entry *entity;
183: char *buffer = (char*)filter->opaque;
184:
185: if (!filter->status) {
186: if (c == '&' ) {
187: filter->status = 1;
188: buffer[0] = '&';
189: } else {
190: CK((*filter->output_function)(c, filter->data));
191: }
192: } else {
193: if (c == ';') {
194: if (buffer[1]=='#') {
195: if (filter->status > 2 && (buffer[2] == 'x' || buffer[2] == 'X')) {
196: if (filter->status > 3) {
197: /* numeric entity */
198: for (pos=3; pos<filter->status; pos++) {
199: int v = buffer[pos];
200: if (v >= '0' && v <= '9') {
201: v = v - '0';
202: } else if (v >= 'A' && v <= 'F') {
203: v = v - 'A' + 10;
204: } else if (v >= 'a' && v <= 'f') {
205: v = v - 'a' + 10;
206: } else {
207: ent = -1;
208: break;
209: }
210: ent = ent * 16 + v;
211: }
212: } else {
213: ent = -1;
214: }
215: } else {
216: /* numeric entity */
217: if (filter->status > 2) {
218: for (pos=2; pos<filter->status; pos++) {
219: int v = buffer[pos];
220: if (v >= '0' && v <= '9') {
221: v = v - '0';
222: } else {
223: ent = -1;
224: break;
225: }
226: ent = ent*10 + v;
227: }
228: } else {
229: ent = -1;
230: }
231: }
232: if (ent >= 0 && ent < 0x110000) {
233: CK((*filter->output_function)(ent, filter->data));
234: } else {
235: for (pos = 0; pos < filter->status; pos++) {
236: CK((*filter->output_function)(buffer[pos], filter->data));
237: }
238: CK((*filter->output_function)(c, filter->data));
239: }
240: filter->status = 0;
241: /*php_error_docref("ref.mbstring" TSRMLS_CC, E_NOTICE, "mbstring decoded '%s'=%d", buffer, ent);*/
242: } else {
243: /* named entity */
244: buffer[filter->status] = 0;
245: entity = (mbfl_html_entity_entry *)mbfl_html_entity_list;
246: while (entity->name) {
247: if (!strcmp(buffer+1, entity->name)) {
248: ent = entity->code;
249: break;
250: }
251: entity++;
252: }
253: if (ent) {
254: /* decoded */
255: CK((*filter->output_function)(ent, filter->data));
256: filter->status = 0;
257: /*php_error_docref("ref.mbstring" TSRMLS_CC, E_NOTICE,"mbstring decoded '%s'=%d", buffer, ent);*/
258: } else {
259: /* failure */
260: buffer[filter->status++] = ';';
261: buffer[filter->status] = 0;
262: /* php_error_docref("ref.mbstring" TSRMLS_CC, E_WARNING, "mbstring cannot decode '%s'", buffer); */
263: mbfl_filt_conv_html_dec_flush(filter);
264: }
265: }
266: } else {
267: /* add character */
268: buffer[filter->status++] = c;
269: /* add character and check */
270: if (!strchr(html_entity_chars, c) || filter->status+1==html_enc_buffer_size || (c=='#' && filter->status>2))
271: {
272: /* illegal character or end of buffer */
273: if (c=='&')
274: filter->status--;
275: buffer[filter->status] = 0;
276: /* php_error_docref("ref.mbstring" TSRMLS_CC, E_WARNING, "mbstring cannot decode '%s'", buffer)l */
277: mbfl_filt_conv_html_dec_flush(filter);
278: if (c=='&')
279: {
280: buffer[filter->status++] = '&';
281: }
282: }
283: }
284: }
285: return c;
286: }
287:
288: int mbfl_filt_conv_html_dec_flush(mbfl_convert_filter *filter)
289: {
290: int status, pos = 0;
291: unsigned char *buffer;
292: int err = 0;
293:
294: buffer = (unsigned char*)filter->opaque;
295: status = filter->status;
296: filter->status = 0;
297:
298: /* flush fragments */
299: while (status--) {
300: int e = (*filter->output_function)(buffer[pos++], filter->data);
301: if (e != 0)
302: err = e;
303: }
304:
305: if (filter->flush_function != NULL) {
306: (*filter->flush_function)(filter->data);
307: }
308:
309: return err;
310: }
311:
312: