index/retrieve.c

   1 /* $Id: retrieve.c,v 1.63 2007-01-15 15:10:17 adam Exp $
   2    Copyright (C) 1995-2007
   3    Index Data ApS
   4
   5 This file is part of the Zebra server.
   6
   7 Zebra is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 2, or (at your option) any later
  10 version.
  11
  12 Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20
  21 */
  22
  23 #include <stdio.h>
  24 #include <assert.h>
  25
  26 #include <fcntl.h>
  27 #ifdef WIN32
  28 #include <io.h>
  29 #include <process.h>
  30 #endif
  31 #if HAVE_UNISTD_H
  32 #include <unistd.h>
  33 #endif
  34
  35 #include "index.h"
  36 #include <yaz/diagbib1.h>
  37 #include <direntz.h>
  38
  39
  40 #define ZEBRA_XML_HEADER_STR "<record xmlns=\"http://www.indexdata.com/zebra/\""
  41
  42 static int zebra_create_record_stream(ZebraHandle zh,
  43                                Record *rec,
  44                                struct ZebraRecStream *stream){
  45
  46     RecordAttr *recordAttr = rec_init_attr(zh->reg->zei, *rec);
  47
  48     if ((*rec)->size[recInfo_storeData] > 0)
  49         zebra_create_stream_mem(stream, (*rec)->info[recInfo_storeData],
  50                                 (*rec)->size[recInfo_storeData]);
  51     else
  52     {
  53         char full_rep[1024];
  54         int fd;
  55
  56         if (zh->path_reg && !yaz_is_abspath((*rec)->info[recInfo_filename])){
  57             strcpy(full_rep, zh->path_reg);
  58             strcat(full_rep, "/");
  59             strcat(full_rep, (*rec)->info[recInfo_filename]);
  60         }
  61         else
  62             strcpy(full_rep, (*rec)->info[recInfo_filename]);
  63
  64         if ((fd = open (full_rep, O_BINARY|O_RDONLY)) == -1){
  65             yaz_log (YLOG_WARN|YLOG_ERRNO, "Retrieve fail; missing file: %s",
  66                      full_rep);
  67             rec_free(rec);
  68             return 14;
  69         }
  70         zebra_create_stream_fd(stream, fd, recordAttr->recordOffset);
  71     }
  72     return 0;
  73 }
  74
  75
  76
  77 static int parse_zebra_elem(const char *elem,
  78                             const char **index, size_t *index_len,
  79                             const char **type, size_t *type_len)
  80 {
  81     *index = 0;
  82     *index_len = 0;
  83
  84     *type = 0;
  85     *type_len = 0;
  86
  87     if (elem && *elem)
  88     {
  89         char *cp;
  90         /* verify that '::' is in the beginning of *elem
  91            and something more follows */
  92         if (':' != *elem
  93             || !(elem +1) || ':' != *(elem +1)
  94             || !(elem +2) || '\0' == *(elem +2))
  95             return 0;
  96
  97         /* pick out info from string after '::' */
  98         elem = elem + 2;
  99         cp = strchr(elem, ':');
 100
 101         if (!cp) /* index, no colon, no type */
 102         {
 103             *index = elem;
 104             *index_len = strlen(elem);
 105         }
 106         else if (cp[1] == '\0') /* colon, but no following type */
 107         {
 108             return 0;
 109         }
 110         else  /* index, colon and type */
 111         {
 112             *index = elem;
 113             *index_len = cp - elem;
 114             *type = cp+1;
 115             *type_len = strlen(cp+1);
 116         }
 117     }
 118     return 1;
 119 }
 120
 121
 122 int zebra_special_sort_fetch(ZebraHandle zh, zint sysno, ODR odr,
 123                              const char *elemsetname,
 124                              oid_value input_format,
 125                              oid_value *output_format,
 126                              char **rec_bufp, int *rec_lenp)
 127 {
 128     const char *retrieval_index;
 129     size_t retrieval_index_len;
 130     const char *retrieval_type;
 131     size_t retrieval_type_len;
 132     char retrieval_index_cstr[256];
 133     int ord;
 134
 135     /* only accept XML and SUTRS requests */
 136     if (input_format != VAL_TEXT_XML && input_format != VAL_SUTRS)
 137     {
 138         yaz_log(YLOG_WARN, "unsupported format for element set zebra::%s",
 139                 elemsetname);
 140         *output_format = VAL_NONE;
 141         return YAZ_BIB1_NO_SYNTAXES_AVAILABLE_FOR_THIS_REQUEST;
 142     }
 143
 144     if (!parse_zebra_elem(elemsetname,
 145                           &retrieval_index, &retrieval_index_len,
 146                           &retrieval_type,  &retrieval_type_len))
 147     {
 148         return YAZ_BIB1_SPECIFIED_ELEMENT_SET_NAME_NOT_VALID_FOR_SPECIFIED_;
 149     }
 150
 151     if (retrieval_type_len == 0)
 152         return -1;   /* must have a register type specified */
 153     if (!retrieval_index_len ||
 154         retrieval_index_len >= sizeof(retrieval_index_cstr)-1)
 155     {
 156         return YAZ_BIB1_SPECIFIED_ELEMENT_SET_NAME_NOT_VALID_FOR_SPECIFIED_;
 157     }
 158
 159     memcpy(retrieval_index_cstr, retrieval_index, retrieval_index_len);
 160     retrieval_index_cstr[retrieval_index_len] = '\0';
 161
 162     ord = zebraExplain_lookup_attr_str(zh->reg->zei,
 163                                        zinfo_index_category_sort,
 164                                        retrieval_type[0],
 165                                        retrieval_index_cstr);
 166     if (ord == -1)
 167         return -1;  /* is not a sort index */
 168     else
 169     {
 170         char dst_buf[IT_MAX_WORD];
 171         char str[IT_MAX_WORD];
 172         int index_type;
 173         const char *db = 0;
 174         const char *string_index = 0;
 175         WRBUF wrbuf = wrbuf_alloc();
 176
 177         zebra_sort_sysno(zh->reg->sort_index, sysno);
 178         zebra_sort_type(zh->reg->sort_index, ord);
 179         zebra_sort_read(zh->reg->sort_index, str);
 180
 181         zebraExplain_lookup_ord(zh->reg->zei, ord, &index_type, &db, &string_index);
 182
 183         zebra_term_untrans(zh, index_type, dst_buf, str);
 184
 185
 186         if (input_format == VAL_TEXT_XML)
 187         {
 188             *output_format = VAL_TEXT_XML;
 189             wrbuf_printf(wrbuf, ZEBRA_XML_HEADER_STR
 190                          " sysno=\"" ZINT_FORMAT "\""
 191                          " set=\"zebra::index%s/\">\n",
 192                          sysno, elemsetname);
 193
 194             wrbuf_printf(wrbuf, "  <index name=\"%s\"",
 195                          string_index);
 196             wrbuf_printf(wrbuf, " type=\"%c\">", index_type);
 197             wrbuf_xmlputs(wrbuf, dst_buf);
 198             wrbuf_printf(wrbuf, "</index>\n");
 199             wrbuf_printf(wrbuf, "</record>\n");
 200         }
 201         else if (input_format == VAL_SUTRS)
 202         {
 203             *output_format = VAL_SUTRS;
 204
 205             wrbuf_printf(wrbuf, "%s %c %s\n", string_index, index_type,
 206                          dst_buf);
 207         }
 208         *rec_lenp = wrbuf_len(wrbuf);
 209         *rec_bufp = odr_malloc(odr, *rec_lenp);
 210         memcpy(*rec_bufp, wrbuf_buf(wrbuf), *rec_lenp);
 211         wrbuf_free(wrbuf, 1);
 212         return 0;
 213     }
 214 }
 215
 216 int zebra_special_index_fetch(ZebraHandle zh, zint sysno, ODR odr,
 217                               Record rec,
 218                               const char *elemsetname,
 219                               oid_value input_format,
 220                               oid_value *output_format,
 221                               char **rec_bufp, int *rec_lenp)
 222 {
 223     const char *retrieval_index;
 224     size_t retrieval_index_len;
 225     const char *retrieval_type;
 226     size_t retrieval_type_len;
 227     WRBUF wrbuf = 0;
 228     zebra_rec_keys_t keys;
 229
 230     /* set output variables before processing possible error states */
 231     /* *rec_lenp = 0; */
 232
 233     /* only accept XML and SUTRS requests */
 234     if (input_format != VAL_TEXT_XML && input_format != VAL_SUTRS)
 235     {
 236         yaz_log(YLOG_WARN, "unsupported format for element set zebra::%s",
 237                 elemsetname);
 238         *output_format = VAL_NONE;
 239         return YAZ_BIB1_NO_SYNTAXES_AVAILABLE_FOR_THIS_REQUEST;
 240     }
 241
 242     if (!parse_zebra_elem(elemsetname,
 243                      &retrieval_index, &retrieval_index_len,
 244                      &retrieval_type,  &retrieval_type_len))
 245         return YAZ_BIB1_SPECIFIED_ELEMENT_SET_NAME_NOT_VALID_FOR_SPECIFIED_;
 246
 247     if (retrieval_type_len != 0 && retrieval_type_len != 1)
 248     {
 249         return YAZ_BIB1_SPECIFIED_ELEMENT_SET_NAME_NOT_VALID_FOR_SPECIFIED_;
 250     }
 251
 252     if (retrieval_index_len)
 253     {
 254         char retrieval_index_cstr[256];
 255
 256         if (retrieval_index_len < sizeof(retrieval_index_cstr) -1)
 257         {
 258             memcpy(retrieval_index_cstr, retrieval_index, retrieval_index_len);
 259             retrieval_index_cstr[retrieval_index_len] = '\0';
 260
 261             if (zebraExplain_lookup_attr_str(zh->reg->zei,
 262                                              zinfo_index_category_index,
 263                                              (retrieval_type_len == 0 ? -1 :
 264                                               retrieval_type[0]),
 265                                              retrieval_index_cstr) == -1)
 266                 return YAZ_BIB1_SPECIFIED_ELEMENT_SET_NAME_NOT_VALID_FOR_SPECIFIED_;
 267         }
 268     }
 269
 270     keys = zebra_rec_keys_open();
 271     zebra_rec_keys_set_buf(keys, rec->info[recInfo_delKeys],
 272                            rec->size[recInfo_delKeys], 0);
 273
 274     wrbuf = wrbuf_alloc();
 275     if (zebra_rec_keys_rewind(keys)){
 276         size_t slen;
 277         const char *str;
 278         struct it_key key_in;
 279
 280         if (input_format == VAL_TEXT_XML)
 281         {
 282             *output_format = VAL_TEXT_XML;
 283             wrbuf_printf(wrbuf, ZEBRA_XML_HEADER_STR
 284                          " sysno=\"" ZINT_FORMAT "\""
 285                          " set=\"zebra::index%s/\">\n",
 286                          sysno, elemsetname);
 287         }
 288         else if (input_format == VAL_SUTRS)
 289             *output_format = VAL_SUTRS;
 290
 291         while (zebra_rec_keys_read(keys, &str, &slen, &key_in))
 292         {
 293             int i;
 294             int ord = CAST_ZINT_TO_INT(key_in.mem[0]);
 295             int index_type;
 296             const char *db = 0;
 297             const char *string_index = 0;
 298             size_t string_index_len;
 299             char dst_buf[IT_MAX_WORD];
 300
 301             zebraExplain_lookup_ord(zh->reg->zei, ord, &index_type, &db,
 302                                     &string_index);
 303             string_index_len = strlen(string_index);
 304
 305             /* process only if index is not defined,
 306                or if defined and matching */
 307             if (retrieval_index == 0
 308                 || (string_index_len == retrieval_index_len
 309                     && !memcmp(string_index, retrieval_index,
 310                                string_index_len)))
 311             {
 312                 /* process only if type is not defined, or is matching */
 313                 if (retrieval_type == 0
 314                     || (retrieval_type_len == 1
 315                         && retrieval_type[0] == index_type))
 316                 {
 317                     zebra_term_untrans(zh, index_type, dst_buf, str);
 318                     if (strlen(dst_buf))
 319                     {
 320                         if (input_format == VAL_TEXT_XML){
 321                             wrbuf_printf(wrbuf, "  <index name=\"%s\"",
 322                                          string_index);
 323
 324                             wrbuf_printf(wrbuf, " type=\"%c\"", index_type);
 325
 326                             wrbuf_printf(wrbuf, " seq=\"" ZINT_FORMAT "\">",
 327                                          key_in.mem[key_in.len -1]);
 328
 329                             wrbuf_xmlputs(wrbuf, dst_buf);
 330                             wrbuf_printf(wrbuf, "</index>\n");
 331                         }
 332                         else if (input_format == VAL_SUTRS){
 333                             wrbuf_printf(wrbuf, "%s ", string_index);
 334
 335                             wrbuf_printf(wrbuf, "%c", index_type);
 336
 337                             for (i = 1; i < key_in.len; i++)
 338                                 wrbuf_printf(wrbuf, " " ZINT_FORMAT,
 339                                              key_in.mem[i]);
 340
 341                         /* zebra_term_untrans(zh, index_type, dst_buf, str); */
 342                             wrbuf_printf(wrbuf, " %s", dst_buf);
 343
 344                             wrbuf_printf(wrbuf, "\n");
 345                         }
 346                     }
 347
 348                 }
 349             }
 350         }
 351         if (input_format == VAL_TEXT_XML)
 352             wrbuf_printf(wrbuf, "</record>\n");
 353     }
 354     *rec_lenp = wrbuf_len(wrbuf);
 355     *rec_bufp = odr_malloc(odr, *rec_lenp);
 356     memcpy(*rec_bufp, wrbuf_buf(wrbuf), *rec_lenp);
 357     wrbuf_free(wrbuf, 1);
 358     zebra_rec_keys_close(keys);
 359     return 0;
 360 }
 361
 362
 363 static void retrieve_puts_attr(WRBUF wrbuf, const char *name,
 364                                const char *value)
 365 {
 366     if (value)
 367     {
 368         wrbuf_printf(wrbuf, " %s=\"", name);
 369         wrbuf_xmlputs(wrbuf, value);
 370         wrbuf_printf(wrbuf, "\"");
 371     }
 372 }
 373
 374 static void retrieve_puts_attr_int(WRBUF wrbuf, const char *name,
 375                                const int value)
 376 {
 377     wrbuf_printf(wrbuf, " %s=\"%i\"", name, value);
 378 }
 379
 380 static void retrieve_puts_str(WRBUF wrbuf, const char *name,
 381                                const char *value)
 382 {
 383     if (value)
 384         wrbuf_printf(wrbuf, "%s %s\n", name, value);
 385 }
 386
 387 static void retrieve_puts_int(WRBUF wrbuf, const char *name,
 388                                const int value)
 389 {
 390     wrbuf_printf(wrbuf, "%s %i\n", name, value);
 391 }
 392
 393 int zebra_special_fetch(ZebraHandle zh, zint sysno, int score, ODR odr,
 394                            const char *elemsetname,
 395                            oid_value input_format,
 396                            oid_value *output_format,
 397                            char **rec_bufp, int *rec_lenp)
 398 {
 399     Record rec;
 400
 401     /* set output variables before processing possible error states */
 402     /* *rec_lenp = 0; */
 403
 404
 405
 406     /* processing zebra::meta::sysno elemset without fetching binary data */
 407     if (elemsetname && 0 == strcmp(elemsetname, "meta::sysno"))
 408     {
 409         int ret = 0;
 410         WRBUF wrbuf = wrbuf_alloc();
 411         if (input_format == VAL_SUTRS)
 412         {
 413             wrbuf_printf(wrbuf, ZINT_FORMAT, sysno);
 414             *output_format = VAL_SUTRS;
 415         }
 416         else if (input_format == VAL_TEXT_XML)
 417         {
 418             wrbuf_printf(wrbuf, ZEBRA_XML_HEADER_STR
 419                          " sysno=\"" ZINT_FORMAT "\"/>\n",
 420                          sysno);
 421             *output_format = VAL_TEXT_XML;
 422         }
 423         *rec_lenp = wrbuf_len(wrbuf);
 424         if (*rec_lenp)
 425             *rec_bufp = odr_strdup(odr, wrbuf_buf(wrbuf));
 426         else
 427             ret = YAZ_BIB1_NO_SYNTAXES_AVAILABLE_FOR_THIS_REQUEST;
 428         wrbuf_free(wrbuf, 1);
 429         return ret;
 430     }
 431
 432     /* processing special elementsetname zebra::index:: for sort elements */
 433     if (elemsetname && 0 == strncmp(elemsetname, "index", 5))
 434     {
 435         int ret = zebra_special_sort_fetch(zh, sysno, odr,
 436                                            elemsetname + 5,
 437                                            input_format, output_format,
 438                                            rec_bufp, rec_lenp);
 439         if (ret != -1)
 440             return ret;
 441         /* not a sort index so we continue to get the full record */
 442     }
 443
 444
 445     /* fetching binary record up for all other display elementsets */
 446     rec = rec_get(zh->reg->records, sysno);
 447     if (!rec)
 448     {
 449         yaz_log(YLOG_WARN, "rec_get fail on sysno=" ZINT_FORMAT, sysno);
 450         return YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
 451     }
 452
 453     /* processing special elementsetnames zebra::data */
 454     if (elemsetname && 0 == strcmp(elemsetname, "data"))
 455     {
 456         struct ZebraRecStream stream;
 457         RecordAttr *recordAttr = rec_init_attr(zh->reg->zei, rec);
 458         zebra_create_record_stream(zh, &rec, &stream);
 459         *output_format = input_format;
 460         *rec_lenp = recordAttr->recordSize;
 461         *rec_bufp = (char *) odr_malloc(odr, *rec_lenp);
 462         stream.readf(&stream, *rec_bufp, *rec_lenp);
 463         stream.destroy(&stream);
 464         rec_free(&rec);
 465         return 0;
 466     }
 467
 468     /* only accept XML and SUTRS requests from now */
 469     if (input_format != VAL_TEXT_XML && input_format != VAL_SUTRS)
 470     {
 471         yaz_log(YLOG_WARN, "unsupported format for element set zebra::%s",
 472                 elemsetname);
 473         return YAZ_BIB1_NO_SYNTAXES_AVAILABLE_FOR_THIS_REQUEST;
 474     }
 475
 476
 477     /* processing special elementsetnames zebra::meta:: */
 478     if (elemsetname && 0 == strcmp(elemsetname, "meta"))
 479     {
 480         int ret = 0;
 481         WRBUF wrbuf = wrbuf_alloc();
 482         RecordAttr *recordAttr = rec_init_attr(zh->reg->zei, rec);
 483
 484         if (input_format == VAL_TEXT_XML)
 485         {
 486             *output_format = VAL_TEXT_XML;
 487
 488             wrbuf_printf(wrbuf, ZEBRA_XML_HEADER_STR
 489                          " sysno=\"" ZINT_FORMAT "\"", sysno);
 490             retrieve_puts_attr(wrbuf, "base", rec->info[recInfo_databaseName]);
 491             retrieve_puts_attr(wrbuf, "file", rec->info[recInfo_filename]);
 492             retrieve_puts_attr(wrbuf, "type", rec->info[recInfo_fileType]);
 493             if (score >= 0)
 494                 retrieve_puts_attr_int(wrbuf, "score", score);
 495
 496             wrbuf_printf(wrbuf,
 497                          " rank=\"" ZINT_FORMAT "\""
 498                          " size=\"%i\""
 499                          " set=\"zebra::%s\"/>\n",
 500                          recordAttr->staticrank,
 501                          recordAttr->recordSize,
 502                          elemsetname);
 503         }
 504         else if (input_format == VAL_SUTRS)
 505         {
 506             *output_format = VAL_SUTRS;
 507             wrbuf_printf(wrbuf, "sysno " ZINT_FORMAT "\n", sysno);
 508             retrieve_puts_str(wrbuf, "base", rec->info[recInfo_databaseName]);
 509             retrieve_puts_str(wrbuf, "file", rec->info[recInfo_filename]);
 510             retrieve_puts_str(wrbuf, "type", rec->info[recInfo_fileType]);
 511             if (score >= 0)
 512                 retrieve_puts_int(wrbuf, "score", score);
 513
 514             wrbuf_printf(wrbuf,
 515                          "rank " ZINT_FORMAT "\n"
 516                          "size %i\n"
 517                          "set zebra::%s\n",
 518                          recordAttr->staticrank,
 519                          recordAttr->recordSize,
 520                          elemsetname);
 521         }
 522         *rec_lenp = wrbuf_len(wrbuf);
 523         if (*rec_lenp)
 524             *rec_bufp = odr_strdup(odr, wrbuf_buf(wrbuf));
 525         else
 526             ret = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
 527
 528         wrbuf_free(wrbuf, 1);
 529         rec_free(&rec);
 530         return ret;
 531     }
 532
 533     /* processing special elementsetnames zebra::index:: */
 534     if (elemsetname && 0 == strncmp(elemsetname, "index", 5))
 535     {
 536         int ret = zebra_special_index_fetch(zh, sysno, odr, rec,
 537                                             elemsetname + 5,
 538                                             input_format, output_format,
 539                                             rec_bufp, rec_lenp);
 540
 541         rec_free(&rec);
 542         return ret;
 543     }
 544
 545     if (rec)
 546         rec_free(&rec);
 547     return YAZ_BIB1_SPECIFIED_ELEMENT_SET_NAME_NOT_VALID_FOR_SPECIFIED_;
 548 }
 549
 550
 551 int zebra_record_fetch(ZebraHandle zh, zint sysno, int score,
 552                        zebra_snippets *hit_snippet, ODR odr,
 553                        oid_value input_format, Z_RecordComposition *comp,
 554                        oid_value *output_format,
 555                        char **rec_bufp, int *rec_lenp, char **basenamep,
 556                        char **addinfo)
 557 {
 558     Record rec;
 559     char *fname, *file_type, *basename;
 560     const char *elemsetname;
 561     struct ZebraRecStream stream;
 562     RecordAttr *recordAttr;
 563     void *clientData;
 564     int return_code = 0;
 565
 566     *basenamep = 0;
 567     *addinfo = 0;
 568     elemsetname = yaz_get_esn(comp);
 569
 570     /* processing zebra special elementset names of form 'zebra:: */
 571     if (elemsetname && 0 == strncmp(elemsetname, "zebra::", 7))
 572         return  zebra_special_fetch(zh, sysno, score, odr,
 573                                     elemsetname + 7,
 574                                     input_format, output_format,
 575                                     rec_bufp, rec_lenp);
 576
 577
 578     /* processing all other element set names */
 579     rec = rec_get(zh->reg->records, sysno);
 580     if (!rec)
 581     {
 582         yaz_log(YLOG_WARN, "rec_get fail on sysno=" ZINT_FORMAT, sysno);
 583         *basenamep = 0;
 584         return YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
 585     }
 586
 587
 588     recordAttr = rec_init_attr(zh->reg->zei, rec);
 589
 590     file_type = rec->info[recInfo_fileType];
 591     fname = rec->info[recInfo_filename];
 592     basename = rec->info[recInfo_databaseName];
 593     *basenamep = (char *) odr_malloc (odr, strlen(basename)+1);
 594     strcpy (*basenamep, basename);
 595
 596     yaz_log(YLOG_DEBUG, "retrieve localno=" ZINT_FORMAT " score=%d",
 597             sysno, score);
 598
 599     zebra_create_record_stream(zh, &rec, &stream);
 600
 601     {
 602         /* snippets code */
 603         zebra_snippets *snippet;
 604         zebra_rec_keys_t reckeys = zebra_rec_keys_open();
 605         RecType rt;
 606         struct recRetrieveCtrl retrieveCtrl;
 607
 608         retrieveCtrl.stream = &stream;
 609         retrieveCtrl.fname = fname;
 610         retrieveCtrl.localno = sysno;
 611         retrieveCtrl.staticrank = recordAttr->staticrank;
 612         retrieveCtrl.score = score;
 613         retrieveCtrl.recordSize = recordAttr->recordSize;
 614         retrieveCtrl.odr = odr;
 615         retrieveCtrl.input_format = retrieveCtrl.output_format = input_format;
 616         retrieveCtrl.comp = comp;
 617         retrieveCtrl.encoding = zh->record_encoding;
 618         retrieveCtrl.diagnostic = 0;
 619         retrieveCtrl.addinfo = 0;
 620         retrieveCtrl.dh = zh->reg->dh;
 621         retrieveCtrl.res = zh->res;
 622         retrieveCtrl.rec_buf = 0;
 623         retrieveCtrl.rec_len = -1;
 624         retrieveCtrl.hit_snippet = hit_snippet;
 625         retrieveCtrl.doc_snippet = zebra_snippets_create();
 626
 627         zebra_rec_keys_set_buf(reckeys,
 628                                rec->info[recInfo_delKeys],
 629                                rec->size[recInfo_delKeys],
 630                                0);
 631         zebra_rec_keys_to_snippets(zh, reckeys, retrieveCtrl.doc_snippet);
 632         zebra_rec_keys_close(reckeys);
 633
 634 #if 0
 635         /* for debugging purposes */
 636         yaz_log(YLOG_LOG, "DOC SNIPPET:");
 637         zebra_snippets_log(retrieveCtrl.doc_snippet, YLOG_LOG);
 638         yaz_log(YLOG_LOG, "HIT SNIPPET:");
 639         zebra_snippets_log(retrieveCtrl.hit_snippet, YLOG_LOG);
 640 #endif
 641         snippet = zebra_snippets_window(retrieveCtrl.doc_snippet,
 642                                         retrieveCtrl.hit_snippet,
 643                                         10);
 644 #if 0
 645         /* for debugging purposes */
 646         yaz_log(YLOG_LOG, "WINDOW SNIPPET:");
 647         zebra_snippets_log(snippet, YLOG_LOG);
 648 #endif
 649
 650         if (!(rt = recType_byName(zh->reg->recTypes, zh->res,
 651                                   file_type, &clientData)))
 652         {
 653             return_code = YAZ_BIB1_SYSTEM_ERROR_IN_PRESENTING_RECORDS;
 654         }
 655         else
 656         {
 657             (*rt->retrieve)(clientData, &retrieveCtrl);
 658             return_code = retrieveCtrl.diagnostic;
 659
 660             *output_format = retrieveCtrl.output_format;
 661             *rec_bufp = (char *) retrieveCtrl.rec_buf;
 662             *rec_lenp = retrieveCtrl.rec_len;
 663             *addinfo = retrieveCtrl.addinfo;
 664         }
 665
 666         zebra_snippets_destroy(snippet);
 667         zebra_snippets_destroy(retrieveCtrl.doc_snippet);
 668      }
 669
 670     stream.destroy(&stream);
 671     rec_free(&rec);
 672
 673     return return_code;
 674 }
 675
 676 /*
 677  * Local variables:
 678  * c-basic-offset: 4
 679  * indent-tabs-mode: nil
 680  * End:
 681  * vim: shiftwidth=4 tabstop=8 expandtab
 682  */
 683