1 /*
2 +----------------------------------------------------------------------+
3 | This source file is subject to version 3.01 of the PHP license, |
4 | that is bundled with this package in the file LICENSE, and is |
5 | available through the world-wide-web at the following url: |
6 | https://www.php.net/license/3_01.txt |
7 | If you did not receive a copy of the PHP license and are unable to |
8 | obtain it through the world-wide-web, please send a note to |
9 | license@php.net so we can mail you a copy immediately. |
10 +----------------------------------------------------------------------+
11 | Authors: Vadim Savchuk <vsavchuk@productengine.com> |
12 | Dmitry Lakhtyuk <dlakhtyuk@productengine.com> |
13 +----------------------------------------------------------------------+
14 */
15
16 #ifdef HAVE_CONFIG_H
17 #include <config.h>
18 #endif
19
20 #include "php_intl.h"
21 #include "collator_class.h"
22 #include "collator_is_numeric.h"
23 #include "collator_convert.h"
24 #include "intl_convert.h"
25
26 #include <unicode/ustring.h>
27 #include <php.h>
28
29 #define COLLATOR_CONVERT_RETURN_FAILED(retval) { \
30 Z_TRY_ADDREF_P(retval); \
31 return retval; \
32 }
33
34 /* {{{ collator_convert_hash_item_from_utf8_to_utf16 */
collator_convert_hash_item_from_utf8_to_utf16(HashTable * hash,zval * hashData,zend_string * hashKey,zend_ulong hashIndex,UErrorCode * status)35 static void collator_convert_hash_item_from_utf8_to_utf16(
36 HashTable* hash, zval *hashData, zend_string *hashKey, zend_ulong hashIndex,
37 UErrorCode* status )
38 {
39 const char* old_val;
40 size_t old_val_len;
41 UChar* new_val = NULL;
42 int32_t new_val_len = 0;
43 zval znew_val;
44
45 /* Process string values only. */
46 if( Z_TYPE_P( hashData ) != IS_STRING )
47 return;
48
49 old_val = Z_STRVAL_P( hashData );
50 old_val_len = Z_STRLEN_P( hashData );
51
52 /* Convert it from UTF-8 to UTF-16LE and save the result to new_val[_len]. */
53 intl_convert_utf8_to_utf16( &new_val, &new_val_len, old_val, old_val_len, status );
54 if( U_FAILURE( *status ) )
55 return;
56
57 /* Update current hash item with the converted value. */
58 ZVAL_STRINGL( &znew_val, (char*)new_val, UBYTES(new_val_len + 1) );
59 //???
60 efree(new_val);
61 /* hack to fix use of initialized value */
62 Z_STRLEN(znew_val) = Z_STRLEN(znew_val) - UBYTES(1);
63
64 if( hashKey)
65 {
66 zend_hash_update( hash, hashKey, &znew_val);
67 }
68 else /* hashKeyType == HASH_KEY_IS_LONG */
69 {
70 zend_hash_index_update( hash, hashIndex, &znew_val);
71 }
72 }
73 /* }}} */
74
75 /* {{{ collator_convert_hash_item_from_utf16_to_utf8 */
collator_convert_hash_item_from_utf16_to_utf8(HashTable * hash,zval * hashData,zend_string * hashKey,zend_ulong hashIndex,UErrorCode * status)76 static void collator_convert_hash_item_from_utf16_to_utf8(
77 HashTable* hash, zval * hashData, zend_string* hashKey, zend_ulong hashIndex,
78 UErrorCode* status )
79 {
80 const char* old_val;
81 size_t old_val_len;
82 zend_string* u8str;
83 zval znew_val;
84
85 /* Process string values only. */
86 if( Z_TYPE_P( hashData ) != IS_STRING )
87 return;
88
89 old_val = Z_STRVAL_P( hashData );
90 old_val_len = Z_STRLEN_P( hashData );
91
92 /* Convert it from UTF-16LE to UTF-8 and save the result to new_val[_len]. */
93 u8str = intl_convert_utf16_to_utf8(
94 (UChar*)old_val, UCHARS(old_val_len), status );
95 if( !u8str )
96 return;
97
98 /* Update current hash item with the converted value. */
99 ZVAL_NEW_STR( &znew_val, u8str);
100
101 if( hashKey )
102 {
103 zend_hash_update( hash, hashKey, &znew_val);
104 }
105 else /* hashKeyType == HASH_KEY_IS_LONG */
106 {
107 zend_hash_index_update( hash, hashIndex, &znew_val);
108 }
109 }
110 /* }}} */
111
112 /* {{{ collator_convert_hash_from_utf8_to_utf16
113 * Convert values of the given hash from UTF-8 encoding to UTF-16LE.
114 */
collator_convert_hash_from_utf8_to_utf16(HashTable * hash,UErrorCode * status)115 void collator_convert_hash_from_utf8_to_utf16( HashTable* hash, UErrorCode* status )
116 {
117 zend_ulong hashIndex;
118 zval *hashData;
119 zend_string *hashKey;
120
121 ZEND_HASH_FOREACH_KEY_VAL(hash, hashIndex, hashKey, hashData) {
122 /* Convert current hash item from UTF-8 to UTF-16LE. */
123 collator_convert_hash_item_from_utf8_to_utf16(
124 hash, hashData, hashKey, hashIndex, status );
125 if( U_FAILURE( *status ) )
126 return;
127 } ZEND_HASH_FOREACH_END();
128 }
129 /* }}} */
130
131 /* {{{ collator_convert_hash_from_utf16_to_utf8
132 * Convert values of the given hash from UTF-16LE encoding to UTF-8.
133 */
collator_convert_hash_from_utf16_to_utf8(HashTable * hash,UErrorCode * status)134 void collator_convert_hash_from_utf16_to_utf8( HashTable* hash, UErrorCode* status )
135 {
136 zend_ulong hashIndex;
137 zend_string *hashKey;
138 zval *hashData;
139
140 ZEND_HASH_FOREACH_KEY_VAL(hash, hashIndex, hashKey, hashData) {
141 /* Convert current hash item from UTF-16LE to UTF-8. */
142 collator_convert_hash_item_from_utf16_to_utf8(
143 hash, hashData, hashKey, hashIndex, status );
144 if( U_FAILURE( *status ) ) {
145 return;
146 }
147 } ZEND_HASH_FOREACH_END();
148 }
149 /* }}} */
150
151 /* {{{ collator_convert_zstr_utf16_to_utf8
152 *
153 * Convert string from utf16 to utf8.
154 *
155 * @param zval* utf16_zval String to convert.
156 *
157 * @return zval* Converted string.
158 */
collator_convert_zstr_utf16_to_utf8(zval * utf16_zval,zval * rv)159 zval* collator_convert_zstr_utf16_to_utf8( zval* utf16_zval, zval *rv )
160 {
161 zend_string* u8str;
162 UErrorCode status = U_ZERO_ERROR;
163
164 /* Convert to utf8 then. */
165 u8str = intl_convert_utf16_to_utf8(
166 (UChar*) Z_STRVAL_P(utf16_zval), UCHARS( Z_STRLEN_P(utf16_zval) ), &status );
167 if( !u8str ) {
168 php_error( E_WARNING, "Error converting utf16 to utf8 in collator_convert_zval_utf16_to_utf8()" );
169 ZVAL_EMPTY_STRING( rv );
170 } else {
171 ZVAL_NEW_STR( rv, u8str );
172 }
173 return rv;
174 }
175 /* }}} */
176
collator_convert_zstr_utf8_to_utf16(zend_string * utf8_str)177 zend_string *collator_convert_zstr_utf8_to_utf16(zend_string *utf8_str)
178 {
179 UChar *ustr = NULL;
180 int32_t ustr_len = 0;
181 UErrorCode status = U_ZERO_ERROR;
182
183 /* Convert the string to UTF-16. */
184 intl_convert_utf8_to_utf16(
185 &ustr, &ustr_len,
186 ZSTR_VAL(utf8_str), ZSTR_LEN(utf8_str),
187 &status);
188 // FIXME Or throw error or use intl internal error handler
189 if (U_FAILURE(status)) {
190 php_error(E_WARNING,
191 "Error casting object to string in collator_convert_zstr_utf8_to_utf16()");
192 }
193
194 zend_string *zstr = zend_string_init((char *) ustr, UBYTES(ustr_len), 0);
195 efree((char *)ustr);
196 return zstr;
197 }
198
199 /* {{{ collator_convert_object_to_string
200 * Convert object to UTF16-encoded string.
201 */
collator_convert_object_to_string(zval * obj,zval * rv)202 zval* collator_convert_object_to_string( zval* obj, zval *rv )
203 {
204 zval* zstr = NULL;
205 UErrorCode status = U_ZERO_ERROR;
206 UChar* ustr = NULL;
207 int32_t ustr_len = 0;
208
209 /* Bail out if it's not an object. */
210 if( Z_TYPE_P( obj ) != IS_OBJECT )
211 {
212 COLLATOR_CONVERT_RETURN_FAILED( obj );
213 }
214
215 /* Try object's handlers. */
216 zstr = rv;
217
218 if( Z_OBJ_HT_P(obj)->cast_object( Z_OBJ_P(obj), zstr, IS_STRING ) == FAILURE )
219 {
220 /* cast_object failed => bail out. */
221 zval_ptr_dtor( zstr );
222 COLLATOR_CONVERT_RETURN_FAILED( obj );
223 }
224
225 /* Object wasn't successfully converted => bail out. */
226 if( zstr == NULL )
227 {
228 COLLATOR_CONVERT_RETURN_FAILED( obj );
229 }
230
231 /* Convert the string to UTF-16. */
232 intl_convert_utf8_to_utf16(
233 &ustr, &ustr_len,
234 Z_STRVAL_P( zstr ), Z_STRLEN_P( zstr ),
235 &status );
236 // FIXME Or throw error or use intl internal error handler
237 if( U_FAILURE( status ) )
238 php_error( E_WARNING, "Error casting object to string in collator_convert_object_to_string()" );
239
240 /* Cleanup zstr to hold utf16 string. */
241 zval_ptr_dtor_str( zstr );
242
243 /* Set string. */
244 ZVAL_STRINGL( zstr, (char*)ustr, UBYTES(ustr_len));
245 //???
246 efree((char *)ustr);
247
248 /* Don't free ustr cause it's set in zstr without copy.
249 * efree( ustr );
250 */
251
252 return zstr;
253 }
254 /* }}} */
255
256 /* {{{ collator_convert_string_to_number
257 *
258 * Convert string to number.
259 *
260 * @param zval* str String to convert.
261 *
262 * @return zval* Number. If str is not numeric string return number zero.
263 */
collator_convert_string_to_number(zval * str,zval * rv)264 zval* collator_convert_string_to_number( zval* str, zval *rv )
265 {
266 zval* num = collator_convert_string_to_number_if_possible( str, rv );
267 if( num == str )
268 {
269 /* String wasn't converted => return zero. */
270 zval_ptr_dtor( num );
271
272 num = rv;
273 ZVAL_LONG( num, 0 );
274 }
275
276 return num;
277 }
278 /* }}} */
279
280 /* {{{ collator_convert_string_to_double
281 *
282 * Convert string to double.
283 *
284 * @param zval* str String to convert.
285 *
286 * @return zval* Number. If str is not numeric string return number zero.
287 */
collator_convert_string_to_double(zval * str,zval * rv)288 zval* collator_convert_string_to_double( zval* str, zval *rv )
289 {
290 zval* num = collator_convert_string_to_number( str, rv );
291 if( Z_TYPE_P(num) == IS_LONG )
292 {
293 ZVAL_DOUBLE( num, Z_LVAL_P( num ) );
294 }
295
296 return num;
297 }
298 /* }}} */
299
300 /* {{{ collator_convert_string_to_number_if_possible
301 *
302 * Convert string to numer.
303 *
304 * @param zval* str String to convert.
305 *
306 * @return zval* Number if str is numeric string. Otherwise
307 * original str param.
308 */
collator_convert_string_to_number_if_possible(zval * str,zval * rv)309 zval* collator_convert_string_to_number_if_possible( zval* str, zval *rv )
310 {
311 uint8_t is_numeric = 0;
312 zend_long lval = 0;
313 double dval = 0;
314
315 if( Z_TYPE_P( str ) != IS_STRING )
316 {
317 COLLATOR_CONVERT_RETURN_FAILED( str );
318 }
319
320 if ( ( is_numeric = collator_is_numeric( (UChar*) Z_STRVAL_P(str), UCHARS( Z_STRLEN_P(str) ), &lval, &dval, /* allow_errors */ 1 ) ) )
321 {
322 if( is_numeric == IS_LONG ) {
323 ZVAL_LONG(rv, lval);
324 }
325 if( is_numeric == IS_DOUBLE )
326 ZVAL_DOUBLE(rv, dval);
327 }
328 else
329 {
330 COLLATOR_CONVERT_RETURN_FAILED( str );
331 }
332
333 return rv;
334 }
335 /* }}} */
336
337 /* Returns string from input zval.
338 *
339 * @param zval* arg zval to get string from
340 *
341 * @return zend_string* UTF16 string.
342 */
collator_zval_to_string(zval * arg)343 zend_string *collator_zval_to_string(zval *arg)
344 {
345 // TODO: This is extremely weird in that it leaves pre-existing strings alone and does not
346 // perform a UTF-8 to UTF-16 conversion for them. The assumption is that values that are
347 // already strings have already been converted beforehand. It would be good to clean this up.
348 if (Z_TYPE_P(arg) == IS_STRING) {
349 return zend_string_copy(Z_STR_P(arg));
350 }
351
352 zend_string *utf8_str = zval_get_string(arg);
353 zend_string *utf16_str = collator_convert_zstr_utf8_to_utf16(utf8_str);
354 zend_string_release(utf8_str);
355 return utf16_str;
356 }
357
358 /* {{{ collator_normalize_sort_argument
359 *
360 * Normalize argument to use in sort's compare function.
361 *
362 * @param zval* arg Sort's argument to normalize.
363 *
364 * @return zval* Normalized copy of arg or unmodified arg
365 * if normalization is not needed.
366 */
collator_normalize_sort_argument(zval * arg,zval * rv)367 zval* collator_normalize_sort_argument( zval* arg, zval *rv )
368 {
369 zval* n_arg = NULL;
370
371 if( Z_TYPE_P( arg ) != IS_STRING )
372 {
373 /* If it's not a string then nothing to do.
374 * Return original arg.
375 */
376 COLLATOR_CONVERT_RETURN_FAILED( arg );
377 }
378
379 /* Try convert to number. */
380 n_arg = collator_convert_string_to_number_if_possible( arg, rv );
381
382 if( n_arg == arg )
383 {
384 /* Conversion to number failed. */
385 zval_ptr_dtor( n_arg );
386
387 /* Convert string to utf8. */
388 n_arg = collator_convert_zstr_utf16_to_utf8( arg, rv );
389 }
390
391 return n_arg;
392 }
393 /* }}} */
394
