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)
  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, tmp;
  76
  77         ZVAL_NULL(&rv);
  78         zend_call_method_with_1_params(getThis(), php_pqdt_class_entry, NULL, "format", &rv,
  79                         zend_read_property(php_pqdt_class_entry, getThis(), ZEND_STRL("format"), 0, &tmp));
  80         RETVAL_ZVAL(&rv, 1, 1);
  81 }
  82
  83 ZEND_BEGIN_ARG_INFO_EX(ai_pqdt_create_from_format, 0, 0, 2)
  84         ZEND_ARG_INFO(0, format)
  85         ZEND_ARG_INFO(0, datetime)
  86         ZEND_ARG_INFO(0, timezone)
  87 ZEND_END_ARG_INFO();
  88 static PHP_METHOD(pqdt, createFromFormat)
  89 {
  90         zend_error_handling zeh;
  91         char *fmt_str, *dt_str;
  92         int fmt_len, dt_len;
  93         zval *ztz = NULL;
  94         ZEND_RESULT_CODE rv;
  95
  96         zend_replace_error_handling(EH_THROW, exce(EX_INVALID_ARGUMENT), &zeh);
  97         rv = zend_parse_parameters(ZEND_NUM_ARGS(), "ss|O", &fmt_str, &fmt_len, &dt_str, &dt_len, &ztz, php_date_get_timezone_ce());
  98         zend_restore_error_handling(&zeh);
  99
 100         if (SUCCESS == rv) {
 101                 php_pqdt_from_string(return_value, fmt_str, dt_str, dt_len, "Y-m-d H:i:s.uO", ztz);
 102         }
 103 }
 104
 105 static zend_function_entry php_pqdt_methods[] = {
 106         PHP_ME(pqdt, createFromFormat, ai_pqdt_create_from_format, ZEND_ACC_PUBLIC|ZEND_ACC_STATIC)
 107         PHP_ME(pqdt, __toString, ai_pqdt_to_string, ZEND_ACC_PUBLIC)
 108         PHP_MALIAS(pqdt, jsonSerialize, __toString, ai_pqdt_to_string, ZEND_ACC_PUBLIC)
 109         {0}
 110 };
 111
 112 zval *php_pqdt_from_string(zval *zv, char *input_fmt, char *dt_str, size_t dt_len, char *output_fmt, zval *ztimezone)
 113 {
 114         php_date_obj *dobj;
 115
 116         php_date_instantiate(php_pqdt_class_entry, zv);
 117         dobj = php_date_obj_from_obj(Z_OBJ_P(zv));
 118         if (!php_date_initialize(dobj, dt_str, dt_len, input_fmt, ztimezone, 1)) {
 119                 zval_dtor(zv);
 120                 ZVAL_NULL(zv);
 121         } else if (output_fmt) {
 122                 zend_update_property_string(php_pqdt_class_entry, zv, ZEND_STRL("format"), output_fmt);
 123         }
 124
 125         return zv;
 126 }
 127
 128 zend_string *php_pqdt_to_string(zval *zdt, const char *format)
 129 {
 130         zval rv;
 131
 132         ZVAL_NULL(&rv);
 133
 134         if (Z_OBJ_HT_P(zdt)->cast_object
 135         &&      SUCCESS == Z_OBJ_HT_P(zdt)->cast_object(zdt, &rv, IS_STRING)
 136         ) {
 137                 return Z_STR(rv);
 138         } else if (instanceof_function(Z_OBJCE_P(zdt), php_date_get_date_ce())) {
 139                 zval rv, zfmt;
 140
 141                 ZVAL_NULL(&rv);
 142                 ZVAL_STRING(&zfmt, format);
 143                 zend_call_method_with_1_params(zdt, Z_OBJCE_P(zdt), NULL, "format", &rv, &zfmt);
 144                 zval_ptr_dtor(&zfmt);
 145
 146                 if (Z_TYPE(rv) == IS_STRING) {
 147                         return Z_STR(rv);
 148                 }
 149                 zval_ptr_dtor(&rv);
 150         }
 151
 152         return NULL;
 153 }
 154
 155 zend_class_entry *php_pqconv_class_entry;
 156
 157 ZEND_BEGIN_ARG_INFO_EX(ai_pqconv_convert_types, 0, 0, 0)
 158 ZEND_END_ARG_INFO();
 159
 160 ZEND_BEGIN_ARG_INFO_EX(ai_pqconv_convert_from_string, 0, 0, 2)
 161         ZEND_ARG_INFO(0, data)
 162         ZEND_ARG_INFO(0, type)
 163 ZEND_END_ARG_INFO();
 164
 165 ZEND_BEGIN_ARG_INFO_EX(ai_pqconv_convert_to_string, 0, 0, 2)
 166         ZEND_ARG_INFO(0, data)
 167         ZEND_ARG_INFO(0, type)
 168 ZEND_END_ARG_INFO();
 169
 170 zend_function_entry php_pqconv_methods[] = {
 171         PHP_ABSTRACT_ME(pqconv, convertTypes, ai_pqconv_convert_types)
 172         PHP_ABSTRACT_ME(pqconv, convertFromString, ai_pqconv_convert_from_string)
 173         PHP_ABSTRACT_ME(pqconv, convertToString, ai_pqconv_convert_to_string)
 174         {0}
 175 };
 176
 177
 178 PHP_MINIT_FUNCTION(pq_misc)
 179 {
 180         zend_class_entry *json, ce = {0};
 181
 182         INIT_NS_CLASS_ENTRY(ce, "pq", "Converter", php_pqconv_methods);
 183         php_pqconv_class_entry = zend_register_internal_interface(&ce);
 184
 185         memset(&ce, 0, sizeof(ce));
 186         INIT_NS_CLASS_ENTRY(ce ,"pq", "DateTime", php_pqdt_methods);
 187         php_pqdt_class_entry = zend_register_internal_class_ex(&ce, php_date_get_date_ce());
 188
 189         zend_declare_property_stringl(php_pqdt_class_entry, ZEND_STRL("format"), ZEND_STRL("Y-m-d H:i:s.uO"), ZEND_ACC_PUBLIC);
 190
 191         /* stop reading this file right here! */
 192         if ((json = zend_hash_str_find_ptr(CG(class_table), ZEND_STRL("jsonserializable")))) {
 193                 zend_class_implements(php_pqdt_class_entry, 1, json);
 194         }
 195
 196         return SUCCESS;
 197 }
 198
 199 typedef struct _HashTableList {
 200         zval arr;
 201         struct _HashTableList *parent;
 202 } HashTableList;
 203
 204 typedef struct _ArrayParserState {
 205         const char *ptr, *end;
 206         HashTableList *list;
 207         php_pqres_t *res;
 208         Oid typ;
 209         unsigned quotes:1;
 210         unsigned escaped:1;
 211 } ArrayParserState;
 212
 213 static char caa(ArrayParserState *a, const char *any, unsigned advance)
 214 {
 215         const char *p = any;
 216
 217         do {
 218                 if (*p == *a->ptr) {
 219                         a->ptr += advance;
 220                         return *p;
 221                 }
 222         } while (*++p);
 223
 224         php_error_docref(NULL, E_WARNING, "Failed to parse array: expected one of '%s', got '%c'", any, *a->ptr); \
 225         return 0;
 226 }
 227
 228 static ZEND_RESULT_CODE add_element(ArrayParserState *a, const char *start)
 229 {
 230         zval zelem;
 231         zend_string *zstr = zend_string_init(start, a->ptr - start, 0);
 232
 233         if (a->quotes) {
 234                 php_stripslashes(zstr);
 235                 ZVAL_STR(&zelem, zstr);
 236         } else if (!zend_string_equals_literal(zstr, "NULL")) {
 237                 ZVAL_STR(&zelem, zstr);
 238         } else {
 239                 zend_string_release(zstr);
 240                 ZVAL_NULL(&zelem);
 241         }
 242
 243         if (!ZVAL_IS_NULL(&zelem)) {
 244                 php_pqres_typed_zval(a->res, a->typ, &zelem);
 245         }
 246
 247         add_next_index_zval(&a->list->arr, &zelem);
 248         return SUCCESS;
 249 }
 250
 251 static ZEND_RESULT_CODE parse_array(ArrayParserState *a);
 252
 253 static ZEND_RESULT_CODE parse_element(ArrayParserState *a, char delim)
 254 {
 255         const char *el;
 256
 257         switch (*a->ptr) {
 258         case '{':
 259                 return parse_array(a);
 260
 261         case '"':
 262                 a->quotes = 1;
 263                 ++a->ptr;
 264                 break;
 265         }
 266
 267         for (el = a->ptr; a->ptr < a->end; ++a->ptr) {
 268                 switch (*a->ptr) {
 269                 case '\\':
 270                         a->escaped = !a->escaped;
 271                         break;
 272
 273                 case '"':
 274                         if (a->escaped) {
 275                                 a->escaped = 0;
 276                         } else if (a->quotes) {
 277                                 if (SUCCESS != add_element(a, el)) {
 278                                         return FAILURE;
 279                                 }
 280                                 a->quotes = 0;
 281                                 ++a->ptr;
 282                                 return SUCCESS;
 283                         } else {
 284                                 php_error_docref(NULL, E_WARNING, "Failed to parse element, unexpected quote: '%.*s'", (int) (a->ptr - el), el);
 285                                 return FAILURE;
 286                         }
 287                         break;
 288
 289                 default:
 290                         if (delim != *a->ptr) {
 291                                 a->escaped = 0;
 292                                 break;
 293                         }
 294                         /* no break */
 295                 case '}':
 296                         if (!a->quotes) {
 297                                 return add_element(a, el);
 298                         }
 299                         break;
 300
 301                 }
 302         }
 303
 304         php_error_docref(NULL, E_WARNING, "Failed to parse element, reached end of input");
 305         return FAILURE;
 306 }
 307
 308 static ZEND_RESULT_CODE parse_elements(ArrayParserState *a)
 309 {
 310         char delims[] = {'}', PHP_PQ_DELIM_OF_ARRAY(a->typ), 0};
 311
 312         while (SUCCESS == parse_element(a, delims[1])) {
 313                 switch (caa(a, delims, 0)) {
 314                 case 0:
 315                         return FAILURE;
 316
 317                 case '}':
 318                         return SUCCESS;
 319
 320                 default:
 321                         if (!*++a->ptr) {
 322                                 php_error_docref(NULL, E_WARNING, "Failed to parse elements, reached end of input");
 323                                 return FAILURE;
 324                         }
 325                         break;
 326                 }
 327         }
 328
 329         return FAILURE;
 330 }
 331
 332 static ZEND_RESULT_CODE parse_array(ArrayParserState *a)
 333 {
 334         HashTableList *list;
 335
 336         if (!caa(a, "{", 1)) {
 337                 return FAILURE;
 338         }
 339
 340         list = ecalloc(1, sizeof(*list));
 341         ZVAL_NEW_ARR(&list->arr);
 342
 343         if (a->list) {
 344                 add_next_index_zval(&a->list->arr, &list->arr);
 345                 list->parent = a->list;
 346         }
 347         a->list = list;
 348
 349         if (SUCCESS != parse_elements(a)) {
 350                 return FAILURE;
 351         }
 352
 353         if (!caa(a, "}", 1)) {
 354                 return FAILURE;
 355         }
 356
 357         if (a->list->parent) {
 358                 a->list = a->list->parent;
 359         }
 360
 361         return SUCCESS;
 362 }
 363
 364 HashTable *php_pq_parse_array(php_pqres_t *res, const char *val_str, size_t val_len, Oid typ TSRMLS_DC)
 365 {
 366         HashTable *ht = NULL;
 367         ArrayParserState a = {0};
 368
 369         a.typ = typ;
 370         a.ptr = val_str;
 371         a.end = val_str + val_len;
 372         a.res = res;
 373
 374         if (SUCCESS != parse_array(&a)) {
 375                 while (a.list) {
 376                         HashTableList *l = a.list->parent;
 377
 378                         zval_dtor(&a.list->arr);
 379                         efree(a.list);
 380                         a.list = l;
 381                 }
 382                 return ht;
 383         }
 384
 385         if (*a.ptr) {
 386                 php_error_docref(NULL, E_NOTICE, "Trailing input: '%s'", a.ptr);
 387         }
 388
 389         do {
 390                 ht = Z_ARRVAL(a.list->arr);
 391         } while ((a.list = a.list->parent));
 392
 393         return ht;
 394 }
 395
 396
 397 /*
 398  * Local variables:
 399  * tab-width: 4
 400  * c-basic-offset: 4
 401  * End:
 402  * vim600: noet sw=4 ts=4 fdm=marker
 403  * vim<600: noet sw=4 ts=4
 404  */