| File: | _clang/../src/data/psql-reader.c |
| Location: | line 810, column 3 |
| Description: | Dereference of null pointer |
| 1 | /* PSPP - a program for statistical analysis. | ||
| 2 | Copyright (C) 2008, 2009 Free Software Foundation, Inc. | ||
| 3 | |||
| 4 | This program is free software: you can redistribute it and/or modify | ||
| 5 | it under the terms of the GNU General Public License as published by | ||
| 6 | the Free Software Foundation, either version 3 of the License, or | ||
| 7 | (at your option) any later version. | ||
| 8 | |||
| 9 | This program is distributed in the hope that it will be useful, | ||
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 12 | GNU General Public License for more details. | ||
| 13 | |||
| 14 | You should have received a copy of the GNU General Public License | ||
| 15 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | ||
| 16 | |||
| 17 | #include <config.h> | ||
| 18 | |||
| 19 | #include <data/casereader-provider.h> | ||
| 20 | #include <libpspp/message.h> | ||
| 21 | #include <gl/xalloc.h> | ||
| 22 | #include <data/dictionary.h> | ||
| 23 | #include <math.h> | ||
| 24 | #include <stdlib.h> | ||
| 25 | |||
| 26 | #include "psql-reader.h" | ||
| 27 | #include "variable.h" | ||
| 28 | #include "format.h" | ||
| 29 | #include "calendar.h" | ||
| 30 | |||
| 31 | #include <inttypes.h> | ||
| 32 | #include <libpspp/misc.h> | ||
| 33 | #include <libpspp/str.h> | ||
| 34 | |||
| 35 | #include "minmax.h" | ||
| 36 | |||
| 37 | #include "gettext.h" | ||
| 38 | #define _(msgid)gettext (msgid) gettext (msgid) | ||
| 39 | #define N_(msgid)(msgid) (msgid) | ||
| 40 | |||
| 41 | |||
| 42 | #if !PSQL_SUPPORT1 | ||
| 43 | struct casereader * | ||
| 44 | psql_open_reader (struct psql_read_info *info UNUSED__attribute__ ((unused)), struct dictionary **dict UNUSED__attribute__ ((unused))) | ||
| 45 | { | ||
| 46 | msg (ME, _("Support for reading postgres databases was not compiled into this installation of PSPP")gettext ("Support for reading postgres databases was not compiled into this installation of PSPP" )); | ||
| 47 | |||
| 48 | return NULL((void*)0); | ||
| 49 | } | ||
| 50 | |||
| 51 | #else | ||
| 52 | |||
| 53 | #include <stdint.h> | ||
| 54 | #include <libpq-fe.h> | ||
| 55 | |||
| 56 | |||
| 57 | /* Default width of string variables. */ | ||
| 58 | #define PSQL_DEFAULT_WIDTH8 8 | ||
| 59 | |||
| 60 | /* These macros must be the same as in catalog/pg_types.h from the postgres source */ | ||
| 61 | #define BOOLOID16 16 | ||
| 62 | #define BYTEAOID17 17 | ||
| 63 | #define CHAROID18 18 | ||
| 64 | #define NAMEOID19 19 | ||
| 65 | #define INT8OID20 20 | ||
| 66 | #define INT2OID21 21 | ||
| 67 | #define INT4OID23 23 | ||
| 68 | #define TEXTOID25 25 | ||
| 69 | #define OIDOID26 26 | ||
| 70 | #define FLOAT4OID700 700 | ||
| 71 | #define FLOAT8OID701 701 | ||
| 72 | #define CASHOID790 790 | ||
| 73 | #define BPCHAROID1042 1042 | ||
| 74 | #define VARCHAROID1043 1043 | ||
| 75 | #define DATEOID1082 1082 | ||
| 76 | #define TIMEOID1083 1083 | ||
| 77 | #define TIMESTAMPOID1114 1114 | ||
| 78 | #define TIMESTAMPTZOID1184 1184 | ||
| 79 | #define INTERVALOID1186 1186 | ||
| 80 | #define TIMETZOID1266 1266 | ||
| 81 | #define NUMERICOID1700 1700 | ||
| 82 | |||
| 83 | static void psql_casereader_destroy (struct casereader *reader UNUSED__attribute__ ((unused)), void *r_); | ||
| 84 | |||
| 85 | static struct ccase *psql_casereader_read (struct casereader *, void *); | ||
| 86 | |||
| 87 | static const struct casereader_class psql_casereader_class = | ||
| 88 | { | ||
| 89 | psql_casereader_read, | ||
| 90 | psql_casereader_destroy, | ||
| 91 | NULL((void*)0), | ||
| 92 | NULL((void*)0), | ||
| 93 | }; | ||
| 94 | |||
| 95 | struct psql_reader | ||
| 96 | { | ||
| 97 | PGconn *conn; | ||
| 98 | PGresult *res; | ||
| 99 | int tuple; | ||
| 100 | |||
| 101 | bool_Bool integer_datetimes; | ||
| 102 | |||
| 103 | double postgres_epoch; | ||
| 104 | |||
| 105 | struct caseproto *proto; | ||
| 106 | struct dictionary *dict; | ||
| 107 | |||
| 108 | /* An array of ints, which maps psql column numbers into | ||
| 109 | pspp variables */ | ||
| 110 | struct variable **vmap; | ||
| 111 | size_t vmapsize; | ||
| 112 | |||
| 113 | struct string fetch_cmd; | ||
| 114 | int cache_size; | ||
| 115 | }; | ||
| 116 | |||
| 117 | |||
| 118 | static struct ccase *set_value (struct psql_reader *r); | ||
| 119 | |||
| 120 | |||
| 121 | |||
| 122 | #if WORDS_BIGENDIAN | ||
| 123 | static void | ||
| 124 | data_to_native (const void *in_, void *out_, int len) | ||
| 125 | { | ||
| 126 | int i; | ||
| 127 | const unsigned char *in = in_; | ||
| 128 | unsigned char *out = out_; | ||
| 129 | for (i = 0 ; i < len ; ++i ) | ||
| 130 | out[i] = in[i]; | ||
| 131 | } | ||
| 132 | #else | ||
| 133 | static void | ||
| 134 | data_to_native (const void *in_, void *out_, int len) | ||
| 135 | { | ||
| 136 | int i; | ||
| 137 | const unsigned char *in = in_; | ||
| 138 | unsigned char *out = out_; | ||
| 139 | for (i = 0 ; i < len ; ++i ) | ||
| 140 | out[len - i - 1] = in[i]; | ||
| 141 | } | ||
| 142 | #endif | ||
| 143 | |||
| 144 | |||
| 145 | #define GET_VALUE(IN, OUT)do { size_t sz = sizeof (OUT); data_to_native (*(IN), &(OUT ), sz) ; (*IN) += sz; } while (0) do { \ | ||
| 146 | size_t sz = sizeof (OUT); \ | ||
| 147 | data_to_native (*(IN), &(OUT), sz) ; \ | ||
| 148 | (*IN) += sz; \ | ||
| 149 | } while (false0) | ||
| 150 | |||
| 151 | |||
| 152 | #if 0 | ||
| 153 | static void | ||
| 154 | dump (const unsigned char *x, int l) | ||
| 155 | { | ||
| 156 | int i; | ||
| 157 | |||
| 158 | for (i = 0; i < l ; ++i) | ||
| 159 | { | ||
| 160 | printf__printf__ ("%02x ", x[i]); | ||
| 161 | } | ||
| 162 | |||
| 163 | putchar ('\n'); | ||
| 164 | |||
| 165 | for (i = 0; i < l ; ++i) | ||
| 166 | { | ||
| 167 | if ( isprint (x[i])) | ||
| 168 | printf__printf__ ("%c ", x[i]); | ||
| 169 | else | ||
| 170 | printf__printf__ (" "); | ||
| 171 | } | ||
| 172 | |||
| 173 | putchar ('\n'); | ||
| 174 | } | ||
| 175 | #endif | ||
| 176 | |||
| 177 | static struct variable * | ||
| 178 | create_var (struct psql_reader *r, const struct fmt_spec *fmt, | ||
| 179 | int width, const char *suggested_name, int col) | ||
| 180 | { | ||
| 181 | unsigned long int vx = 0; | ||
| 182 | struct variable *var; | ||
| 183 | char name[VAR_NAME_LEN64 + 1]; | ||
| 184 | |||
| 185 | if ( ! dict_make_unique_var_name (r->dict, suggested_name, &vx, name)) | ||
| 186 | { | ||
| 187 | msg (ME, _("Cannot create variable name from %s")gettext ("Cannot create variable name from %s"), suggested_name); | ||
| 188 | return NULL((void*)0); | ||
| 189 | } | ||
| 190 | |||
| 191 | var = dict_create_var (r->dict, name, width); | ||
| 192 | var_set_both_formats (var, fmt); | ||
| 193 | |||
| 194 | if ( col != -1) | ||
| 195 | { | ||
| 196 | r->vmap = xrealloc (r->vmap, (col + 1) * sizeof (*r->vmap)); | ||
| 197 | |||
| 198 | r->vmap[col] = var; | ||
| 199 | r->vmapsize = col + 1; | ||
| 200 | } | ||
| 201 | |||
| 202 | return var; | ||
| 203 | } | ||
| 204 | |||
| 205 | |||
| 206 | |||
| 207 | |||
| 208 | /* Fill the cache */ | ||
| 209 | static bool_Bool | ||
| 210 | reload_cache (struct psql_reader *r) | ||
| 211 | { | ||
| 212 | PQclear (r->res); | ||
| 213 | r->tuple = 0; | ||
| 214 | |||
| 215 | r->res = PQexec (r->conn, ds_cstr (&r->fetch_cmd)); | ||
| 216 | |||
| 217 | if (PQresultStatus (r->res) != PGRES_TUPLES_OK || PQntuples (r->res) < 1) | ||
| 218 | { | ||
| 219 | PQclear (r->res); | ||
| 220 | r->res = NULL((void*)0); | ||
| 221 | return false0; | ||
| 222 | } | ||
| 223 | |||
| 224 | return true1; | ||
| 225 | } | ||
| 226 | |||
| 227 | |||
| 228 | struct casereader * | ||
| 229 | psql_open_reader (struct psql_read_info *info, struct dictionary **dict) | ||
| 230 | { | ||
| 231 | int i; | ||
| 232 | int n_fields, n_tuples; | ||
| 233 | PGresult *qres = NULL((void*)0); | ||
| 234 | casenumber n_cases = CASENUMBER_MAX2147483647L; | ||
| 235 | |||
| 236 | struct psql_reader *r = xzalloc (sizeof *r); | ||
| 237 | struct string query ; | ||
| 238 | |||
| 239 | r->conn = PQconnectdb (info->conninfo); | ||
| 240 | if ( NULL((void*)0) == r->conn) | ||
| 241 | { | ||
| 242 | msg (ME, _("Memory error whilst opening psql source")gettext ("Memory error whilst opening psql source")); | ||
| 243 | goto error; | ||
| 244 | } | ||
| 245 | |||
| 246 | if ( PQstatus (r->conn) != CONNECTION_OK ) | ||
| 247 | { | ||
| 248 | msg (ME, _("Error opening psql source: %s.")gettext ("Error opening psql source: %s."), | ||
| 249 | PQerrorMessage (r->conn)); | ||
| 250 | |||
| 251 | goto error; | ||
| 252 | } | ||
| 253 | |||
| 254 | { | ||
| 255 | int ver_num; | ||
| 256 | const char *vers = PQparameterStatus (r->conn, "server_version"); | ||
| 257 | |||
| 258 | sscanf (vers, "%d", &ver_num); | ||
| 259 | |||
| 260 | if ( ver_num < 8) | ||
| 261 | { | ||
| 262 | msg (ME, | ||
| 263 | _("Postgres server is version %s."gettext ("Postgres server is version %s." " Reading from versions earlier than 8.0 is not supported." ) | ||
| 264 | " Reading from versions earlier than 8.0 is not supported.")gettext ("Postgres server is version %s." " Reading from versions earlier than 8.0 is not supported." ), | ||
| 265 | vers); | ||
| 266 | |||
| 267 | goto error; | ||
| 268 | } | ||
| 269 | } | ||
| 270 | |||
| 271 | { | ||
| 272 | const char *dt = PQparameterStatus (r->conn, "integer_datetimes"); | ||
| 273 | |||
| 274 | r->integer_datetimes = ( 0 == strcasecmp (dt, "on")); | ||
| 275 | } | ||
| 276 | |||
| 277 | #if USE_SSL1 | ||
| 278 | if ( PQgetssl (r->conn) == NULL((void*)0)) | ||
| 279 | #endif | ||
| 280 | { | ||
| 281 | if (! info->allow_clear) | ||
| 282 | { | ||
| 283 | msg (ME, _("Connection is unencrypted, "gettext ("Connection is unencrypted, " "but unencrypted connections have not been permitted." ) | ||
| 284 | "but unencrypted connections have not been permitted.")gettext ("Connection is unencrypted, " "but unencrypted connections have not been permitted." )); | ||
| 285 | goto error; | ||
| 286 | } | ||
| 287 | } | ||
| 288 | |||
| 289 | r->postgres_epoch = | ||
| 290 | calendar_gregorian_to_offset (2000, 1, 1, NULL((void*)0), NULL((void*)0)); | ||
| 291 | |||
| 292 | |||
| 293 | /* Create the dictionary and populate it */ | ||
| 294 | *dict = r->dict = dict_create (); | ||
| 295 | |||
| 296 | { | ||
| 297 | const int enc = PQclientEncoding (r->conn); | ||
| 298 | |||
| 299 | /* According to section 22.2 of the Postgresql manual | ||
| 300 | a value of zero (SQL_ASCII) indicates | ||
| 301 | "a declaration of ignorance about the encoding". | ||
| 302 | Accordingly, we don't set the dictionary's encoding | ||
| 303 | if we find this value. | ||
| 304 | */ | ||
| 305 | if ( enc != 0 ) | ||
| 306 | dict_set_encoding (r->dict, pg_encoding_to_char (enc)); | ||
| 307 | } | ||
| 308 | |||
| 309 | /* | ||
| 310 | select count (*) from (select * from medium) stupid_sql_standard; | ||
| 311 | */ | ||
| 312 | ds_init_cstr (&query, | ||
| 313 | "BEGIN READ ONLY ISOLATION LEVEL SERIALIZABLE; " | ||
| 314 | "DECLARE pspp BINARY CURSOR FOR "); | ||
| 315 | |||
| 316 | ds_put_substring (&query, info->sql.ss); | ||
| 317 | |||
| 318 | qres = PQexec (r->conn, ds_cstr (&query)); | ||
| 319 | ds_destroy (&query); | ||
| 320 | if ( PQresultStatus (qres) != PGRES_COMMAND_OK ) | ||
| 321 | { | ||
| 322 | msg (ME, _("Error from psql source: %s.")gettext ("Error from psql source: %s."), | ||
| 323 | PQresultErrorMessage (qres)); | ||
| 324 | goto error; | ||
| 325 | } | ||
| 326 | |||
| 327 | PQclear (qres); | ||
| 328 | |||
| 329 | |||
| 330 | /* Now use the count() function to find the total number of cases | ||
| 331 | that this query returns. | ||
| 332 | Doing this incurs some overhead. The server has to iterate every | ||
| 333 | case in order to find this number. However, it's performed on the | ||
| 334 | server side, and in all except the most huge databases the extra | ||
| 335 | overhead will be worth the effort. | ||
| 336 | On the other hand, most PSPP functions don't need to know this. | ||
| 337 | The GUI is the notable exception. | ||
| 338 | */ | ||
| 339 | ds_init_cstr (&query, "SELECT count (*) FROM ("); | ||
| 340 | ds_put_substring (&query, info->sql.ss); | ||
| 341 | ds_put_cstr (&query, ") stupid_sql_standard"); | ||
| 342 | |||
| 343 | qres = PQexec (r->conn, ds_cstr (&query)); | ||
| 344 | ds_destroy (&query); | ||
| 345 | if ( PQresultStatus (qres) != PGRES_TUPLES_OK ) | ||
| 346 | { | ||
| 347 | msg (ME, _("Error from psql source: %s.")gettext ("Error from psql source: %s."), | ||
| 348 | PQresultErrorMessage (qres)); | ||
| 349 | goto error; | ||
| 350 | } | ||
| 351 | n_cases = atol (PQgetvalue (qres, 0, 0)); | ||
| 352 | PQclear (qres); | ||
| 353 | |||
| 354 | qres = PQexec (r->conn, "FETCH FIRST FROM pspp"); | ||
| 355 | if ( PQresultStatus (qres) != PGRES_TUPLES_OK ) | ||
| 356 | { | ||
| 357 | msg (ME, _("Error from psql source: %s.")gettext ("Error from psql source: %s."), | ||
| 358 | PQresultErrorMessage (qres)); | ||
| 359 | goto error; | ||
| 360 | } | ||
| 361 | |||
| 362 | n_tuples = PQntuples (qres); | ||
| 363 | n_fields = PQnfields (qres); | ||
| 364 | |||
| 365 | r->proto = NULL((void*)0); | ||
| 366 | r->vmap = NULL((void*)0); | ||
| 367 | r->vmapsize = 0; | ||
| 368 | |||
| 369 | for (i = 0 ; i < n_fields ; ++i ) | ||
| 370 | { | ||
| 371 | struct variable *var; | ||
| 372 | struct fmt_spec fmt = {FMT_F, 8, 2}; | ||
| 373 | Oid type = PQftype (qres, i); | ||
| 374 | int width = 0; | ||
| 375 | int length ; | ||
| 376 | |||
| 377 | /* If there are no data then make a finger in the air | ||
| 378 | guess at the contents */ | ||
| 379 | if ( n_tuples > 0 ) | ||
| 380 | length = PQgetlength (qres, 0, i); | ||
| 381 | else | ||
| 382 | length = PSQL_DEFAULT_WIDTH8; | ||
| 383 | |||
| 384 | switch (type) | ||
| 385 | { | ||
| 386 | case BOOLOID16: | ||
| 387 | case OIDOID26: | ||
| 388 | case INT2OID21: | ||
| 389 | case INT4OID23: | ||
| 390 | case INT8OID20: | ||
| 391 | case FLOAT4OID700: | ||
| 392 | case FLOAT8OID701: | ||
| 393 | fmt.type = FMT_F; | ||
| 394 | break; | ||
| 395 | case CASHOID790: | ||
| 396 | fmt.type = FMT_DOLLAR; | ||
| 397 | break; | ||
| 398 | case CHAROID18: | ||
| 399 | fmt.type = FMT_A; | ||
| 400 | width = length > 0 ? length : 1; | ||
| 401 | fmt.d = 0; | ||
| 402 | fmt.w = 1; | ||
| 403 | break; | ||
| 404 | case TEXTOID25: | ||
| 405 | case VARCHAROID1043: | ||
| 406 | case BPCHAROID1042: | ||
| 407 | fmt.type = FMT_A; | ||
| 408 | width = (info->str_width == -1) ? | ||
| 409 | ROUND_UP (length, PSQL_DEFAULT_WIDTH)(((length) + ((8) - 1)) / (8) * (8)) : info->str_width; | ||
| 410 | fmt.w = width; | ||
| 411 | fmt.d = 0; | ||
| 412 | break; | ||
| 413 | case BYTEAOID17: | ||
| 414 | fmt.type = FMT_AHEX; | ||
| 415 | width = length > 0 ? length : PSQL_DEFAULT_WIDTH8; | ||
| 416 | fmt.w = width * 2; | ||
| 417 | fmt.d = 0; | ||
| 418 | break; | ||
| 419 | case INTERVALOID1186: | ||
| 420 | fmt.type = FMT_DTIME; | ||
| 421 | width = 0; | ||
| 422 | fmt.d = 0; | ||
| 423 | fmt.w = 13; | ||
| 424 | break; | ||
| 425 | case DATEOID1082: | ||
| 426 | fmt.type = FMT_DATE; | ||
| 427 | width = 0; | ||
| 428 | fmt.w = 11; | ||
| 429 | fmt.d = 0; | ||
| 430 | break; | ||
| 431 | case TIMEOID1083: | ||
| 432 | case TIMETZOID1266: | ||
| 433 | fmt.type = FMT_TIME; | ||
| 434 | width = 0; | ||
| 435 | fmt.w = 11; | ||
| 436 | fmt.d = 0; | ||
| 437 | break; | ||
| 438 | case TIMESTAMPOID1114: | ||
| 439 | case TIMESTAMPTZOID1184: | ||
| 440 | fmt.type = FMT_DATETIME; | ||
| 441 | fmt.d = 0; | ||
| 442 | fmt.w = 22; | ||
| 443 | width = 0; | ||
| 444 | break; | ||
| 445 | case NUMERICOID1700: | ||
| 446 | fmt.type = FMT_E; | ||
| 447 | fmt.d = 2; | ||
| 448 | fmt.w = 40; | ||
| 449 | width = 0; | ||
| 450 | break; | ||
| 451 | default: | ||
| 452 | msg (MW, _("Unsupported OID %d. SYSMIS values will be inserted.")gettext ("Unsupported OID %d. SYSMIS values will be inserted." ), type); | ||
| 453 | fmt.type = FMT_A; | ||
| 454 | width = length > 0 ? length : PSQL_DEFAULT_WIDTH8; | ||
| 455 | fmt.w = width ; | ||
| 456 | fmt.d = 0; | ||
| 457 | break; | ||
| 458 | } | ||
| 459 | |||
| 460 | if ( width == 0 && fmt_is_string (fmt.type)) | ||
| 461 | fmt.w = width = PSQL_DEFAULT_WIDTH8; | ||
| 462 | |||
| 463 | |||
| 464 | var = create_var (r, &fmt, width, PQfname (qres, i), i); | ||
| 465 | if ( type == NUMERICOID1700 && n_tuples > 0) | ||
| 466 | { | ||
| 467 | const uint8_t *vptr = (const uint8_t *) PQgetvalue (qres, 0, i); | ||
| 468 | struct fmt_spec fmt; | ||
| 469 | int16_t n_digits, weight, dscale; | ||
| 470 | uint16_t sign; | ||
| 471 | |||
| 472 | GET_VALUE (&vptr, n_digits)do { size_t sz = sizeof (n_digits); data_to_native (*(&vptr ), &(n_digits), sz) ; (*&vptr) += sz; } while (0); | ||
| 473 | GET_VALUE (&vptr, weight)do { size_t sz = sizeof (weight); data_to_native (*(&vptr ), &(weight), sz) ; (*&vptr) += sz; } while (0); | ||
| 474 | GET_VALUE (&vptr, sign)do { size_t sz = sizeof (sign); data_to_native (*(&vptr), &(sign), sz) ; (*&vptr) += sz; } while (0); | ||
| 475 | GET_VALUE (&vptr, dscale)do { size_t sz = sizeof (dscale); data_to_native (*(&vptr ), &(dscale), sz) ; (*&vptr) += sz; } while (0); | ||
| 476 | |||
| 477 | fmt.d = dscale; | ||
| 478 | fmt.type = FMT_E; | ||
| 479 | fmt.w = fmt_max_output_width (fmt.type) ; | ||
| 480 | fmt.d = MIN (dscale, fmt_max_output_decimals (fmt.type, fmt.w))(((dscale)<(fmt_max_output_decimals (fmt.type, fmt.w)))?(dscale ):(fmt_max_output_decimals (fmt.type, fmt.w))); | ||
| 481 | var_set_both_formats (var, &fmt); | ||
| 482 | } | ||
| 483 | |||
| 484 | /* Timezones need an extra variable */ | ||
| 485 | switch (type) | ||
| 486 | { | ||
| 487 | case TIMETZOID1266: | ||
| 488 | { | ||
| 489 | struct string name; | ||
| 490 | ds_init_cstr (&name, var_get_name (var)); | ||
| 491 | ds_put_cstr (&name, "-zone"); | ||
| 492 | fmt.type = FMT_F; | ||
| 493 | fmt.w = 8; | ||
| 494 | fmt.d = 2; | ||
| 495 | |||
| 496 | create_var (r, &fmt, 0, ds_cstr (&name), -1); | ||
| 497 | |||
| 498 | ds_destroy (&name); | ||
| 499 | } | ||
| 500 | break; | ||
| 501 | |||
| 502 | case INTERVALOID1186: | ||
| 503 | { | ||
| 504 | struct string name; | ||
| 505 | ds_init_cstr (&name, var_get_name (var)); | ||
| 506 | ds_put_cstr (&name, "-months"); | ||
| 507 | fmt.type = FMT_F; | ||
| 508 | fmt.w = 3; | ||
| 509 | fmt.d = 0; | ||
| 510 | |||
| 511 | create_var (r, &fmt, 0, ds_cstr (&name), -1); | ||
| 512 | |||
| 513 | ds_destroy (&name); | ||
| 514 | } | ||
| 515 | default: | ||
| 516 | break; | ||
| 517 | } | ||
| 518 | } | ||
| 519 | |||
| 520 | PQclear (qres); | ||
| 521 | |||
| 522 | qres = PQexec (r->conn, "MOVE BACKWARD 1 FROM pspp"); | ||
| 523 | if ( PQresultStatus (qres) != PGRES_COMMAND_OK) | ||
| 524 | { | ||
| 525 | PQclear (qres); | ||
| 526 | goto error; | ||
| 527 | } | ||
| 528 | PQclear (qres); | ||
| 529 | |||
| 530 | r->cache_size = info->bsize != -1 ? info->bsize: 4096; | ||
| 531 | |||
| 532 | ds_init_empty (&r->fetch_cmd); | ||
| 533 | ds_put_format (&r->fetch_cmd, "FETCH FORWARD %d FROM pspp", r->cache_size); | ||
| 534 | |||
| 535 | reload_cache (r); | ||
| 536 | r->proto = caseproto_ref (dict_get_proto (*dict)); | ||
| 537 | |||
| 538 | return casereader_create_sequential | ||
| 539 | (NULL((void*)0), | ||
| 540 | r->proto, | ||
| 541 | n_cases, | ||
| 542 | &psql_casereader_class, r); | ||
| 543 | |||
| 544 | error: | ||
| 545 | dict_destroy (*dict); | ||
| 546 | |||
| 547 | psql_casereader_destroy (NULL((void*)0), r); | ||
| 548 | return NULL((void*)0); | ||
| 549 | } | ||
| 550 | |||
| 551 | |||
| 552 | static void | ||
| 553 | psql_casereader_destroy (struct casereader *reader UNUSED__attribute__ ((unused)), void *r_) | ||
| 554 | { | ||
| 555 | struct psql_reader *r = r_; | ||
| 556 | if (r == NULL((void*)0)) | ||
| 557 | return ; | ||
| 558 | |||
| 559 | ds_destroy (&r->fetch_cmd); | ||
| 560 | free (r->vmap); | ||
| 561 | if (r->res) PQclear (r->res); | ||
| 562 | PQfinish (r->conn); | ||
| 563 | caseproto_unref (r->proto); | ||
| 564 | |||
| 565 | free (r); | ||
| 566 | } | ||
| 567 | |||
| 568 | |||
| 569 | |||
| 570 | static struct ccase * | ||
| 571 | psql_casereader_read (struct casereader *reader UNUSED__attribute__ ((unused)), void *r_) | ||
| 572 | { | ||
| 573 | struct psql_reader *r = r_; | ||
| 574 | |||
| 575 | if ( NULL((void*)0) == r->res || r->tuple >= r->cache_size) | ||
| 576 | { | ||
| 577 | if ( ! reload_cache (r) ) | ||
| 578 | return false0; | ||
| 579 | } | ||
| 580 | |||
| 581 | return set_value (r); | ||
| 582 | } | ||
| 583 | |||
| 584 | static struct ccase * | ||
| 585 | set_value (struct psql_reader *r) | ||
| 586 | { | ||
| 587 | struct ccase *c; | ||
| 588 | int n_vars; | ||
| 589 | int i; | ||
| 590 | |||
| 591 | assert (r->res)((r->res) ? (void) (0) : __assert_fail ("r->res", "../src/data/psql-reader.c" , 591, __PRETTY_FUNCTION__)); | ||
| 592 | |||
| 593 | n_vars = PQnfields (r->res); | ||
| 594 | |||
| 595 | if ( r->tuple >= PQntuples (r->res)) | ||
| |||
| 596 | return NULL((void*)0); | ||
| 597 | |||
| 598 | c = case_create (r->proto); | ||
| 599 | case_set_missing (c); | ||
| 600 | |||
| 601 | |||
| 602 | for (i = 0 ; i < n_vars ; ++i ) | ||
| |||
| 603 | { | ||
| 604 | Oid type = PQftype (r->res, i); | ||
| 605 | const struct variable *v = r->vmap[i]; | ||
| 606 | union value *val = case_data_rw (c, v); | ||
| 607 | |||
| 608 | union value *val1 = NULL((void*)0); | ||
| |||
| 609 | |||
| 610 | switch (type) | ||
| |||
| 611 | { | ||
| 612 | case INTERVALOID1186: | ||
| 613 | case TIMESTAMPTZOID1184: | ||
| 614 | case TIMETZOID1266: | ||
| 615 | if (i < r->vmapsize && var_get_dict_index(v) + 1 < dict_get_var_cnt (r->dict)) | ||
| |||
| 616 | { | ||
| 617 | const struct variable *v1 = NULL((void*)0); | ||
| 618 | v1 = dict_get_var (r->dict, var_get_dict_index (v) + 1); | ||
| 619 | |||
| 620 | val1 = case_data_rw (c, v1); | ||
| 621 | } | ||
| 622 | break; | ||
| |||
| 623 | default: | ||
| 624 | break; | ||
| 625 | } | ||
| 626 | |||
| 627 | |||
| 628 | if (PQgetisnull (r->res, r->tuple, i)) | ||
| |||
| 629 | { | ||
| 630 | value_set_missing (val, var_get_width (v)); | ||
| 631 | |||
| 632 | switch (type) | ||
| 633 | { | ||
| 634 | case INTERVALOID1186: | ||
| 635 | case TIMESTAMPTZOID1184: | ||
| 636 | case TIMETZOID1266: | ||
| 637 | val1->f = SYSMIS(-1.7976931348623157e+308); | ||
| 638 | break; | ||
| 639 | default: | ||
| 640 | break; | ||
| 641 | } | ||
| 642 | } | ||
| 643 | else | ||
| 644 | { | ||
| 645 | const uint8_t *vptr = (const uint8_t *) PQgetvalue (r->res, r->tuple, i); | ||
| 646 | int length = PQgetlength (r->res, r->tuple, i); | ||
| 647 | |||
| 648 | int var_width = var_get_width (v); | ||
| 649 | switch (type) | ||
| |||
| 650 | { | ||
| 651 | case BOOLOID16: | ||
| 652 | { | ||
| 653 | int8_t x; | ||
| 654 | GET_VALUE (&vptr, x)do { size_t sz = sizeof (x); data_to_native (*(&vptr), & (x), sz) ; (*&vptr) += sz; } while (0); | ||
| 655 | val->f = x; | ||
| 656 | } | ||
| 657 | break; | ||
| 658 | |||
| 659 | case OIDOID26: | ||
| 660 | case INT2OID21: | ||
| 661 | { | ||
| 662 | int16_t x; | ||
| 663 | GET_VALUE (&vptr, x)do { size_t sz = sizeof (x); data_to_native (*(&vptr), & (x), sz) ; (*&vptr) += sz; } while (0); | ||
| 664 | val->f = x; | ||
| 665 | } | ||
| 666 | break; | ||
| 667 | |||
| 668 | case INT4OID23: | ||
| 669 | { | ||
| 670 | int32_t x; | ||
| 671 | GET_VALUE (&vptr, x)do { size_t sz = sizeof (x); data_to_native (*(&vptr), & (x), sz) ; (*&vptr) += sz; } while (0); | ||
| 672 | val->f = x; | ||
| 673 | } | ||
| 674 | break; | ||
| 675 | |||
| 676 | case INT8OID20: | ||
| 677 | { | ||
| 678 | int64_t x; | ||
| 679 | GET_VALUE (&vptr, x)do { size_t sz = sizeof (x); data_to_native (*(&vptr), & (x), sz) ; (*&vptr) += sz; } while (0); | ||
| 680 | val->f = x; | ||
| 681 | } | ||
| 682 | break; | ||
| 683 | |||
| 684 | case FLOAT4OID700: | ||
| 685 | { | ||
| 686 | float n; | ||
| 687 | GET_VALUE (&vptr, n)do { size_t sz = sizeof (n); data_to_native (*(&vptr), & (n), sz) ; (*&vptr) += sz; } while (0); | ||
| 688 | val->f = n; | ||
| 689 | } | ||
| 690 | break; | ||
| 691 | |||
| 692 | case FLOAT8OID701: | ||
| 693 | { | ||
| 694 | double n; | ||
| 695 | GET_VALUE (&vptr, n)do { size_t sz = sizeof (n); data_to_native (*(&vptr), & (n), sz) ; (*&vptr) += sz; } while (0); | ||
| 696 | val->f = n; | ||
| 697 | } | ||
| 698 | break; | ||
| 699 | |||
| 700 | case CASHOID790: | ||
| 701 | { | ||
| 702 | /* Postgres 8.3 uses 64 bits. | ||
| 703 | Earlier versions use 32 */ | ||
| 704 | switch (length) | ||
| 705 | { | ||
| 706 | case 8: | ||
| 707 | { | ||
| 708 | int64_t x; | ||
| 709 | GET_VALUE (&vptr, x)do { size_t sz = sizeof (x); data_to_native (*(&vptr), & (x), sz) ; (*&vptr) += sz; } while (0); | ||
| 710 | val->f = x / 100.0; | ||
| 711 | } | ||
| 712 | break; | ||
| 713 | case 4: | ||
| 714 | { | ||
| 715 | int32_t x; | ||
| 716 | GET_VALUE (&vptr, x)do { size_t sz = sizeof (x); data_to_native (*(&vptr), & (x), sz) ; (*&vptr) += sz; } while (0); | ||
| 717 | val->f = x / 100.0; | ||
| 718 | } | ||
| 719 | break; | ||
| 720 | default: | ||
| 721 | val->f = SYSMIS(-1.7976931348623157e+308); | ||
| 722 | break; | ||
| 723 | } | ||
| 724 | } | ||
| 725 | break; | ||
| 726 | |||
| 727 | case INTERVALOID1186: | ||
| 728 | { | ||
| 729 | if ( r->integer_datetimes ) | ||
| 730 | { | ||
| 731 | uint32_t months; | ||
| 732 | uint32_t days; | ||
| 733 | uint32_t us; | ||
| 734 | uint32_t things; | ||
| 735 | |||
| 736 | GET_VALUE (&vptr, things)do { size_t sz = sizeof (things); data_to_native (*(&vptr ), &(things), sz) ; (*&vptr) += sz; } while (0); | ||
| 737 | GET_VALUE (&vptr, us)do { size_t sz = sizeof (us); data_to_native (*(&vptr), & (us), sz) ; (*&vptr) += sz; } while (0); | ||
| 738 | GET_VALUE (&vptr, days)do { size_t sz = sizeof (days); data_to_native (*(&vptr), &(days), sz) ; (*&vptr) += sz; } while (0); | ||
| 739 | GET_VALUE (&vptr, months)do { size_t sz = sizeof (months); data_to_native (*(&vptr ), &(months), sz) ; (*&vptr) += sz; } while (0); | ||
| 740 | |||
| 741 | val->f = us / 1000000.0; | ||
| 742 | val->f += days * 24 * 3600; | ||
| 743 | |||
| 744 | val1->f = months; | ||
| 745 | } | ||
| 746 | else | ||
| 747 | { | ||
| 748 | uint32_t days, months; | ||
| 749 | double seconds; | ||
| 750 | |||
| 751 | GET_VALUE (&vptr, seconds)do { size_t sz = sizeof (seconds); data_to_native (*(&vptr ), &(seconds), sz) ; (*&vptr) += sz; } while (0); | ||
| 752 | GET_VALUE (&vptr, days)do { size_t sz = sizeof (days); data_to_native (*(&vptr), &(days), sz) ; (*&vptr) += sz; } while (0); | ||
| 753 | GET_VALUE (&vptr, months)do { size_t sz = sizeof (months); data_to_native (*(&vptr ), &(months), sz) ; (*&vptr) += sz; } while (0); | ||
| 754 | |||
| 755 | val->f = seconds; | ||
| 756 | val->f += days * 24 * 3600; | ||
| 757 | |||
| 758 | val1->f = months; | ||
| 759 | } | ||
| 760 | } | ||
| 761 | break; | ||
| 762 | |||
| 763 | case DATEOID1082: | ||
| 764 | { | ||
| 765 | int32_t x; | ||
| 766 | |||
| 767 | GET_VALUE (&vptr, x)do { size_t sz = sizeof (x); data_to_native (*(&vptr), & (x), sz) ; (*&vptr) += sz; } while (0); | ||
| 768 | |||
| 769 | val->f = (x + r->postgres_epoch) * 24 * 3600 ; | ||
| 770 | } | ||
| 771 | break; | ||
| 772 | |||
| 773 | case TIMEOID1083: | ||
| 774 | { | ||
| 775 | if ( r->integer_datetimes) | ||
| 776 | { | ||
| 777 | uint64_t x; | ||
| 778 | GET_VALUE (&vptr, x)do { size_t sz = sizeof (x); data_to_native (*(&vptr), & (x), sz) ; (*&vptr) += sz; } while (0); | ||
| 779 | val->f = x / 1000000.0; | ||
| 780 | } | ||
| 781 | else | ||
| 782 | { | ||
| 783 | double x; | ||
| 784 | GET_VALUE (&vptr, x)do { size_t sz = sizeof (x); data_to_native (*(&vptr), & (x), sz) ; (*&vptr) += sz; } while (0); | ||
| 785 | val->f = x; | ||
| 786 | } | ||
| 787 | } | ||
| 788 | break; | ||
| 789 | |||
| 790 | case TIMETZOID1266: | ||
| 791 | { | ||
| 792 | int32_t zone; | ||
| 793 | if ( r->integer_datetimes) | ||
| |||
| 794 | { | ||
| 795 | uint64_t x; | ||
| 796 | |||
| 797 | |||
| 798 | GET_VALUE (&vptr, x)do { size_t sz = sizeof (x); data_to_native (*(&vptr), & (x), sz) ; (*&vptr) += sz; } while (0); | ||
| 799 | val->f = x / 1000000.0; | ||
| 800 | } | ||
| 801 | else | ||
| 802 | { | ||
| 803 | double x; | ||
| 804 | |||
| 805 | GET_VALUE (&vptr, x)do { size_t sz = sizeof (x); data_to_native (*(&vptr), & (x), sz) ; (*&vptr) += sz; } while (0); | ||
| 806 | val->f = x ; | ||
| 807 | } | ||
| 808 | |||
| 809 | GET_VALUE (&vptr, zone)do { size_t sz = sizeof (zone); data_to_native (*(&vptr), &(zone), sz) ; (*&vptr) += sz; } while (0); | ||
| 810 | val1->f = zone / 3600.0; | ||
| |||
| 811 | } | ||
| 812 | break; | ||
| 813 | |||
| 814 | case TIMESTAMPOID1114: | ||
| 815 | case TIMESTAMPTZOID1184: | ||
| 816 | { | ||
| 817 | if ( r->integer_datetimes) | ||
| 818 | { | ||
| 819 | int64_t x; | ||
| 820 | |||
| 821 | GET_VALUE (&vptr, x)do { size_t sz = sizeof (x); data_to_native (*(&vptr), & (x), sz) ; (*&vptr) += sz; } while (0); | ||
| 822 | |||
| 823 | x /= 1000000; | ||
| 824 | |||
| 825 | val->f = (x + r->postgres_epoch * 24 * 3600 ); | ||
| 826 | } | ||
| 827 | else | ||
| 828 | { | ||
| 829 | double x; | ||
| 830 | |||
| 831 | GET_VALUE (&vptr, x)do { size_t sz = sizeof (x); data_to_native (*(&vptr), & (x), sz) ; (*&vptr) += sz; } while (0); | ||
| 832 | |||
| 833 | val->f = (x + r->postgres_epoch * 24 * 3600 ); | ||
| 834 | } | ||
| 835 | } | ||
| 836 | break; | ||
| 837 | case TEXTOID25: | ||
| 838 | case VARCHAROID1043: | ||
| 839 | case BPCHAROID1042: | ||
| 840 | case BYTEAOID17: | ||
| 841 | memcpy (value_str_rw (val, var_width), (char *) vptr, | ||
| 842 | MIN (length, var_width)(((length)<(var_width))?(length):(var_width))); | ||
| 843 | break; | ||
| 844 | |||
| 845 | case NUMERICOID1700: | ||
| 846 | { | ||
| 847 | double f = 0.0; | ||
| 848 | int i; | ||
| 849 | int16_t n_digits, weight, dscale; | ||
| 850 | uint16_t sign; | ||
| 851 | |||
| 852 | GET_VALUE (&vptr, n_digits)do { size_t sz = sizeof (n_digits); data_to_native (*(&vptr ), &(n_digits), sz) ; (*&vptr) += sz; } while (0); | ||
| 853 | GET_VALUE (&vptr, weight)do { size_t sz = sizeof (weight); data_to_native (*(&vptr ), &(weight), sz) ; (*&vptr) += sz; } while (0); | ||
| 854 | GET_VALUE (&vptr, sign)do { size_t sz = sizeof (sign); data_to_native (*(&vptr), &(sign), sz) ; (*&vptr) += sz; } while (0); | ||
| 855 | GET_VALUE (&vptr, dscale)do { size_t sz = sizeof (dscale); data_to_native (*(&vptr ), &(dscale), sz) ; (*&vptr) += sz; } while (0); | ||
| 856 | |||
| 857 | #if 0 | ||
| 858 | { | ||
| 859 | struct fmt_spec fmt; | ||
| 860 | fmt.d = dscale; | ||
| 861 | fmt.type = FMT_E; | ||
| 862 | fmt.w = fmt_max_output_width (fmt.type) ; | ||
| 863 | fmt.d = MIN (dscale, fmt_max_output_decimals (fmt.type, fmt.w))(((dscale)<(fmt_max_output_decimals (fmt.type, fmt.w)))?(dscale ):(fmt_max_output_decimals (fmt.type, fmt.w))); | ||
| 864 | var_set_both_formats (v, &fmt); | ||
| 865 | } | ||
| 866 | #endif | ||
| 867 | |||
| 868 | for (i = 0 ; i < n_digits; ++i) | ||
| 869 | { | ||
| 870 | uint16_t x; | ||
| 871 | GET_VALUE (&vptr, x)do { size_t sz = sizeof (x); data_to_native (*(&vptr), & (x), sz) ; (*&vptr) += sz; } while (0); | ||
| 872 | f += x * pow (10000, weight--); | ||
| 873 | } | ||
| 874 | |||
| 875 | if ( sign == 0x4000) | ||
| 876 | f *= -1.0; | ||
| 877 | |||
| 878 | if ( sign == 0xC000) | ||
| 879 | val->f = SYSMIS(-1.7976931348623157e+308); | ||
| 880 | else | ||
| 881 | val->f = f; | ||
| 882 | } | ||
| 883 | break; | ||
| 884 | |||
| 885 | default: | ||
| 886 | val->f = SYSMIS(-1.7976931348623157e+308); | ||
| 887 | break; | ||
| 888 | } | ||
| 889 | } | ||
| 890 | } | ||
| 891 | |||
| 892 | r->tuple++; | ||
| 893 | |||
| 894 | return c; | ||
| 895 | } | ||
| 896 | |||
| 897 | #endif |