git.m6w6.name Git - m6w6/ext-pq/blob - src/php_pq_misc.c

   1 /*
   2     +--------------------------------------------------------------------+
   3     | PECL :: pq                                                         |
   4     +--------------------------------------------------------------------+
   5     | Redistribution and use in source and binary forms, with or without |
   6     | modification, are permitted provided that the conditions mentioned |
   7     | in the accompanying LICENSE file are met.                          |
   8     +--------------------------------------------------------------------+
   9     | Copyright (c) 2013, Michael Wallner <mike@php.net>                 |
  10     +--------------------------------------------------------------------+
  11 */
  12
  13 #ifdef HAVE_CONFIG_H
  14 #       include "config.h"
  15 #endif
  16
  17 #include <php.h>
  18 #include <ext/date/php_date.h>
  19 #include <ext/standard/php_string.h>
  20
  21 #include <Zend/zend_interfaces.h>
  22
  23 #include <libpq/libpq-fs.h>
  24
  25 #include "php_pq.h"
  26 #include "php_pqexc.h"
  27 #include "php_pq_misc.h"
  28 #undef PHP_PQ_TYPE
  29 #include "php_pq_type.h"
  30
  31 char *php_pq_rtrim(char *e)
  32 {
  33         size_t l = strlen(e);
  34
  35         while (l-- > 0 && e[l] == '\n') {
  36                 e[l] = '\0';
  37         }
  38         return e;
  39 }
  40
  41 const char *php_pq_strmode(long mode)
  42 {
  43         switch (mode & (INV_READ|INV_WRITE)) {
  44         case INV_READ|INV_WRITE:
  45                 return "rw";
  46         case INV_READ:
  47                 return "r";
  48         case INV_WRITE:
  49                 return "w";
  50         default:
  51                 return "-";
  52         }
  53 }
  54
  55 int php_pq_compare_index(const void *lptr, const void *rptr TSRMLS_DC)
  56 {
  57         const Bucket *l = *(const Bucket **) lptr;
  58         const Bucket *r = *(const Bucket **) rptr;
  59
  60         if (l->h < r->h) {
  61                 return -1;
  62         }
  63         if (l->h > r->h) {
  64                 return 1;
  65         }
  66         return 0;
  67 }
  68
  69 zend_class_entry *php_pqdt_class_entry;
  70
  71 ZEND_BEGIN_ARG_INFO_EX(ai_pqdt_to_string, 0, 0, 0)
  72 ZEND_END_ARG_INFO();
  73 static PHP_METHOD(pqdt, __toString)
  74 {
  75         zval *rv = NULL;
  76
  77         zend_call_method_with_1_params(&getThis(), php_pqdt_class_entry, NULL, "format", &rv,
  78                         zend_read_property(php_pqdt_class_entry, getThis(), ZEND_STRL("format"), 0 TSRMLS_CC));
  79         if (rv) {
  80                 RETVAL_ZVAL(rv, 1, 1);
  81         }
  82 }
  83
  84 ZEND_BEGIN_ARG_INFO_EX(ai_pqdt_create_from_format, 0, 0, 2)
  85         ZEND_ARG_INFO(0, format)
  86         ZEND_ARG_INFO(0, datetime)
  87         ZEND_ARG_INFO(0, timezone)
  88 ZEND_END_ARG_INFO();
  89 static PHP_METHOD(pqdt, createFromFormat)
  90 {
  91         zend_error_handling zeh;
  92         char *fmt_str, *dt_str;
  93         int fmt_len, dt_len;
  94         zval *ztz = NULL;
  95         ZEND_RESULT_CODE rv;
  96
  97         zend_replace_error_handling(EH_THROW, exce(EX_INVALID_ARGUMENT), &zeh TSRMLS_CC);
  98         rv = zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ss|O", &fmt_str, &fmt_len, &dt_str, &dt_len, &ztz, php_date_get_timezone_ce());
  99         zend_restore_error_handling(&zeh TSRMLS_CC);
 100
 101         if (SUCCESS == rv) {
 102                 php_pqdt_from_string(return_value, fmt_str, dt_str, dt_len, "Y-m-d H:i:s.uO", ztz TSRMLS_CC);
 103         }
 104 }
 105
 106 static zend_function_entry php_pqdt_methods[] = {
 107         PHP_ME(pqdt, createFromFormat, ai_pqdt_create_from_format, ZEND_ACC_PUBLIC|ZEND_ACC_STATIC)
 108         PHP_ME(pqdt, __toString, ai_pqdt_to_string, ZEND_ACC_PUBLIC)
 109         PHP_MALIAS(pqdt, jsonSerialize, __toString, ai_pqdt_to_string, ZEND_ACC_PUBLIC)
 110         {0}
 111 };
 112
 113 zval *php_pqdt_from_string(zval *zv, char *input_fmt, char *dt_str, size_t dt_len, char *output_fmt, zval *ztimezone TSRMLS_DC)
 114 {
 115         php_date_obj *dobj;
 116
 117         if (!zv) {
 118                 MAKE_STD_ZVAL(zv);
 119         }
 120
 121         php_date_instantiate(php_pqdt_class_entry, zv TSRMLS_CC);
 122         dobj = zend_object_store_get_object(zv TSRMLS_CC);
 123         if (!php_date_initialize(dobj, dt_str, dt_len, input_fmt, ztimezone, 1 TSRMLS_CC)) {
 124                 zval_dtor(zv);
 125                 ZVAL_NULL(zv);
 126         } else if (output_fmt) {
 127                 zend_update_property_string(php_pqdt_class_entry, zv, ZEND_STRL("format"), output_fmt TSRMLS_CC);
 128         }
 129
 130         return zv;
 131 }
 132
 133 void php_pqdt_to_string(zval *zdt, const char *format, char **str_buf, size_t *str_len TSRMLS_DC)
 134 {
 135         zval rv;
 136
 137         INIT_PZVAL(&rv);
 138         ZVAL_NULL(&rv);
 139
 140         if (Z_OBJ_HT_P(zdt)->cast_object
 141         &&      SUCCESS == Z_OBJ_HT_P(zdt)->cast_object(zdt, &rv, IS_STRING TSRMLS_CC)
 142         ) {
 143                 *str_len = Z_STRLEN(rv);
 144                 *str_buf = Z_STRVAL(rv);
 145         } else if (instanceof_function(Z_OBJCE_P(zdt), php_date_get_date_ce() TSRMLS_CC)) {
 146                 zval *rv = NULL, *zfmt;
 147
 148                 MAKE_STD_ZVAL(zfmt);
 149                 ZVAL_STRING(zfmt, format, 1);
 150                 zend_call_method_with_1_params(&zdt, Z_OBJCE_P(zdt), NULL, "format", &rv, zfmt);
 151                 zval_ptr_dtor(&zfmt);
 152
 153                 if (rv) {
 154                         if (Z_TYPE_P(rv) == IS_STRING) {
 155                                 *str_len = Z_STRLEN_P(rv);
 156                                 *str_buf = estrndup(Z_STRVAL_P(rv), *str_len);
 157                         }
 158                         zval_ptr_dtor(&rv);
 159                 }
 160         }
 161 }
 162
 163 zend_class_entry *php_pqconv_class_entry;
 164
 165 ZEND_BEGIN_ARG_INFO_EX(ai_pqconv_convert_types, 0, 0, 0)
 166 ZEND_END_ARG_INFO();
 167
 168 ZEND_BEGIN_ARG_INFO_EX(ai_pqconv_convert_from_string, 0, 0, 2)
 169         ZEND_ARG_INFO(0, data)
 170         ZEND_ARG_INFO(0, type)
 171 ZEND_END_ARG_INFO();
 172
 173 ZEND_BEGIN_ARG_INFO_EX(ai_pqconv_convert_to_string, 0, 0, 2)
 174         ZEND_ARG_INFO(0, data)
 175         ZEND_ARG_INFO(0, type)
 176 ZEND_END_ARG_INFO();
 177
 178 zend_function_entry php_pqconv_methods[] = {
 179         PHP_ABSTRACT_ME(pqconv, convertTypes, ai_pqconv_convert_types)
 180         PHP_ABSTRACT_ME(pqconv, convertFromString, ai_pqconv_convert_from_string)
 181         PHP_ABSTRACT_ME(pqconv, convertToString, ai_pqconv_convert_to_string)
 182         {0}
 183 };
 184
 185
 186 PHP_MINIT_FUNCTION(pq_misc)
 187 {
 188         zend_class_entry **json, ce = {0};
 189
 190         INIT_NS_CLASS_ENTRY(ce, "pq", "Converter", php_pqconv_methods);
 191         php_pqconv_class_entry = zend_register_internal_interface(&ce TSRMLS_CC);
 192
 193         memset(&ce, 0, sizeof(ce));
 194         INIT_NS_CLASS_ENTRY(ce ,"pq", "DateTime", php_pqdt_methods);
 195         php_pqdt_class_entry = zend_register_internal_class_ex(&ce, php_date_get_date_ce(), "DateTime" TSRMLS_CC);
 196
 197         zend_declare_property_stringl(php_pqdt_class_entry, ZEND_STRL("format"), ZEND_STRL("Y-m-d H:i:s.uO"), ZEND_ACC_PUBLIC TSRMLS_CC);
 198
 199         /* stop reading this file right here! */
 200         if (SUCCESS == zend_hash_find(CG(class_table), ZEND_STRS("jsonserializable"), (void *) &json)) {
 201                 zend_class_implements(php_pqdt_class_entry TSRMLS_CC, 1, *json);
 202         }
 203
 204         return SUCCESS;
 205 }
 206
 207 typedef struct _HashTableList {
 208         HashTable ht;
 209         struct _HashTableList *parent;
 210 } HashTableList;
 211
 212 typedef struct _ArrayParserState {
 213         const char *ptr, *end;
 214         HashTableList *list;
 215         php_pqres_t *res;
 216 #ifdef ZTS
 217         void ***ts;
 218 #endif
 219         Oid typ;
 220         unsigned quotes:1;
 221         unsigned escaped:1;
 222 } ArrayParserState;
 223
 224 static char caa(ArrayParserState *a, const char *any, unsigned advance)
 225 {
 226         const char *p = any;
 227         TSRMLS_FETCH_FROM_CTX(a->ts);
 228
 229         do {
 230                 if (*p == *a->ptr) {
 231                         a->ptr += advance;
 232                         return *p;
 233                 }
 234         } while (*++p);
 235
 236         php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed to parse array: expected one of '%s', got '%c'", any, *a->ptr); \
 237         return 0;
 238 }
 239
 240 static ZEND_RESULT_CODE add_element(ArrayParserState *a, const char *start)
 241 {
 242         zval *zelem;
 243         size_t el_len = a->ptr - start;
 244         char *el_str = estrndup(start, el_len);
 245         TSRMLS_FETCH_FROM_CTX(a->ts);
 246
 247         if (a->quotes) {
 248                 int tmp_len = el_len;
 249
 250                 php_stripslashes(el_str, &tmp_len TSRMLS_CC);
 251                 el_len = tmp_len;
 252         } else if ((a->ptr - start == 4) && !strncmp(start, "NULL", 4)) {
 253                 efree(el_str);
 254                 el_str = NULL;
 255                 el_len = 0;
 256         }
 257
 258         if (!el_str) {
 259                 MAKE_STD_ZVAL(zelem);
 260                 ZVAL_NULL(zelem);
 261         } else {
 262                 zelem = php_pqres_typed_zval(a->res, el_str, el_len, a->typ TSRMLS_CC);
 263
 264                 efree(el_str);
 265         }
 266
 267         return zend_hash_next_index_insert(&a->list->ht, &zelem, sizeof(zval *), NULL);
 268 }
 269
 270 static ZEND_RESULT_CODE parse_array(ArrayParserState *a);
 271
 272 static ZEND_RESULT_CODE parse_element(ArrayParserState *a, char delim)
 273 {
 274         const char *el;
 275         TSRMLS_FETCH_FROM_CTX(a->ts);
 276
 277         switch (*a->ptr) {
 278         case '{':
 279                 return parse_array(a);
 280
 281         case '"':
 282                 a->quotes = 1;
 283                 ++a->ptr;
 284                 break;
 285         }
 286
 287         for (el = a->ptr; a->ptr < a->end; ++a->ptr) {
 288                 switch (*a->ptr) {
 289                 case '\\':
 290                         a->escaped = !a->escaped;
 291                         break;
 292
 293                 case '"':
 294                         if (a->escaped) {
 295                                 a->escaped = 0;
 296                         } else if (a->quotes) {
 297                                 if (SUCCESS != add_element(a, el)) {
 298                                         return FAILURE;
 299                                 }
 300                                 a->quotes = 0;
 301                                 ++a->ptr;
 302                                 return SUCCESS;
 303                         } else {
 304                                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed to parse element, unexpected quote: '%.*s'", (int) (a->ptr - el), el);
 305                                 return FAILURE;
 306                         }
 307                         break;
 308
 309                 default:
 310                         if (delim != *a->ptr) {
 311                                 a->escaped = 0;
 312                                 break;
 313                         }
 314                         /* no break */
 315                 case '}':
 316                         if (!a->quotes) {
 317                                 return add_element(a, el);
 318                         }
 319                         break;
 320
 321                 }
 322         }
 323
 324         php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed to parse element, reached end of input");
 325         return FAILURE;
 326 }
 327
 328 static ZEND_RESULT_CODE parse_elements(ArrayParserState *a)
 329 {
 330         char delims[] = {'}', PHP_PQ_DELIM_OF_ARRAY(a->typ), 0};
 331         TSRMLS_FETCH_FROM_CTX(a->ts);
 332
 333         while (SUCCESS == parse_element(a, delims[1])) {
 334                 switch (caa(a, delims, 0)) {
 335                 case 0:
 336                         return FAILURE;
 337
 338                 case '}':
 339                         return SUCCESS;
 340
 341                 default:
 342                         if (!*++a->ptr) {
 343                                 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed to parse elements, reached end of input");
 344                                 return FAILURE;
 345                         }
 346                         break;
 347                 }
 348         }
 349
 350         return FAILURE;
 351 }
 352
 353 static ZEND_RESULT_CODE parse_array(ArrayParserState *a)
 354 {
 355         HashTableList *list;
 356
 357         if (!caa(a, "{", 1)) {
 358                 return FAILURE;
 359         }
 360
 361         list = ecalloc(1, sizeof(*list));
 362         ZEND_INIT_SYMTABLE(&list->ht);
 363
 364         if (a->list) {
 365                 zval *zcur;
 366
 367                 MAKE_STD_ZVAL(zcur);
 368                 Z_TYPE_P(zcur) = IS_ARRAY;
 369                 Z_ARRVAL_P(zcur) = &list->ht;
 370
 371                 zend_hash_next_index_insert(&a->list->ht, &zcur, sizeof(zval *), NULL);
 372
 373                 list->parent = a->list;
 374         }
 375         a->list = list;
 376
 377         if (SUCCESS != parse_elements(a)) {
 378                 return FAILURE;
 379         }
 380
 381         if (!caa(a, "}", 1)) {
 382                 return FAILURE;
 383         }
 384
 385         if (a->list->parent) {
 386                 a->list = a->list->parent;
 387         }
 388
 389         return SUCCESS;
 390 }
 391
 392 HashTable *php_pq_parse_array(php_pqres_t *res, const char *val_str, size_t val_len, Oid typ TSRMLS_DC)
 393 {
 394         HashTable *ht = NULL;
 395         ArrayParserState a = {0};
 396         TSRMLS_SET_CTX(a.ts);
 397
 398         a.typ = typ;
 399         a.ptr = val_str;
 400         a.end = val_str + val_len;
 401         a.res = res;
 402
 403         if (SUCCESS != parse_array(&a)) {
 404                 while (a.list) {
 405                         HashTableList *l = a.list->parent;
 406
 407                         zend_hash_destroy(&a.list->ht);
 408                         efree(a.list);
 409                         a.list = l;
 410                 }
 411                 return ht;
 412         }
 413
 414         if (*a.ptr) {
 415                 php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Trailing input: '%s'", a.ptr);
 416         }
 417
 418         do {
 419                 ht = &a.list->ht;
 420         } while ((a.list = a.list->parent));
 421
 422         return ht;
 423 }
 424
 425
 426 /*
 427  * Local variables:
 428  * tab-width: 4
 429  * c-basic-offset: 4
 430  * End:
 431  * vim600: noet sw=4 ts=4 fdm=marker
 432  * vim<600: noet sw=4 ts=4
 433  */