1 /* $Id: extract.c,v 1.178 2005-04-15 10:47:48 adam Exp $
2 Copyright (C) 1995-2005
5 This file is part of the Zebra server.
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
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
17 You should have received a copy of the GNU General Public License
18 along with Zebra; see the file LICENSE.zebra. If not, write to the
19 Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
37 #if _FILE_OFFSET_BITS == 64
38 #define PRINTF_OFF_T "%Ld"
40 #define PRINTF_OFF_T "%ld"
43 #define USE_SHELLSORT 0
46 static void shellsort(void *ar, int r, size_t s,
47 int (*cmp)(const void *a, const void *b))
52 static const int incs[16] = { 1391376, 463792, 198768, 86961, 33936,
53 13776, 4592, 1968, 861, 336,
54 112, 48, 21, 7, 3, 1 };
55 for ( k = 0; k < 16; k++)
56 for (h = incs[k], i = h; i < r; i++)
60 while (j > h && (*cmp)(a + s*(j-h), v) > 0)
62 memcpy (a + s*j, a + s*(j-h), s);
70 static void logRecord (ZebraHandle zh)
72 ++zh->records_processed;
73 if (!(zh->records_processed % 1000))
75 yaz_log (YLOG_LOG, "Records: "ZINT_FORMAT" i/u/d "
76 ZINT_FORMAT"/"ZINT_FORMAT"/"ZINT_FORMAT,
77 zh->records_processed, zh->records_inserted, zh->records_updated,
82 static void extract_init (struct recExtractCtrl *p, RecWord *w)
84 w->zebra_maps = p->zebra_maps;
86 w->attrSet = VAL_BIB1;
95 static const char **searchRecordKey (ZebraHandle zh,
96 struct recKeys *reckeys,
97 int attrSetS, int attrUseS)
99 static const char *ws[32];
100 void *decode_handle = iscz1_start();
106 for (i = 0; i<32; i++)
109 while (off < reckeys->buf_used)
111 const char *src = reckeys->buf + off;
113 char *dst = (char*) &key;
114 int attrSet, attrUse;
116 iscz1_decode(decode_handle, &dst, &src);
117 assert(key.len < 4 && key.len > 2);
119 attrSet = (int) key.mem[0] >> 16;
120 attrUse = (int) key.mem[0] & 65535;
121 seqno = (int) key.mem[key.len-1];
123 if (attrUseS == attrUse && attrSetS == attrSet)
129 woff = seqno - startSeq;
130 if (woff >= 0 && woff < 31)
136 off = src - reckeys->buf;
138 iscz1_stop(decode_handle);
139 assert (off == reckeys->buf_used);
143 struct file_read_info {
144 off_t file_max; /* maximum offset so far */
145 off_t file_offset; /* current offset */
146 off_t file_moffset; /* offset of rec/rec boundary */
153 static struct file_read_info *file_read_start (int fd)
155 struct file_read_info *fi = (struct file_read_info *)
156 xmalloc (sizeof(*fi));
160 fi->file_moffset = 0;
166 static void file_read_stop (struct file_read_info *fi)
171 static off_t file_seek (void *handle, off_t offset)
173 struct file_read_info *p = (struct file_read_info *) handle;
174 p->file_offset = offset;
177 return lseek (p->fd, offset, SEEK_SET);
180 static off_t file_tell (void *handle)
182 struct file_read_info *p = (struct file_read_info *) handle;
183 return p->file_offset;
186 static int file_read (void *handle, char *buf, size_t count)
188 struct file_read_info *p = (struct file_read_info *) handle;
194 if (r > p->sdrmax - p->file_offset)
195 r = p->sdrmax - p->file_offset;
197 memcpy (buf, p->sdrbuf + p->file_offset, r);
200 r = read (fd, buf, count);
204 if (p->file_offset > p->file_max)
205 p->file_max = p->file_offset;
210 static void file_begin (void *handle)
212 struct file_read_info *p = (struct file_read_info *) handle;
214 p->file_offset = p->file_moffset;
215 if (!p->sdrbuf && p->file_moffset)
216 lseek (p->fd, p->file_moffset, SEEK_SET);
220 static void file_end (void *handle, off_t offset)
222 struct file_read_info *p = (struct file_read_info *) handle;
224 assert (p->file_more == 0);
226 p->file_moffset = offset;
229 static char *fileMatchStr (ZebraHandle zh,
230 struct recKeys *reckeys,
231 const char *fname, const char *spec)
233 static char dstBuf[2048]; /* static here ??? */
235 const char *s = spec;
236 static const char **w;
240 while (*s == ' ' || *s == '\t')
246 char attset_str[64], attname_str[64];
247 data1_attset *attset;
250 int attSet = 1, attUse = 1;
254 for (i = 0; *s && *s != ',' && *s != ')'; s++)
256 attset_str[i++] = *s;
257 attset_str[i] = '\0';
262 for (i = 0; *s && *s != ')'; s++)
264 attname_str[i++] = *s;
265 attname_str[i] = '\0';
268 if ((attset = data1_get_attset (zh->reg->dh, attset_str)))
271 attSet = attset->reference;
272 att = data1_getattbyname(zh->reg->dh, attset, attname_str);
276 attUse = atoi (attname_str);
278 w = searchRecordKey (zh, reckeys, attSet, attUse);
283 for (i = 0; i<32; i++)
288 yaz_log (YLOG_WARN, "Missing ) in match criteria %s in group %s",
289 spec, zh->m_group ? zh->m_group : "none");
294 for (i = 0; i<32; i++)
295 if (matchFlag[i] && w[i])
307 yaz_log (YLOG_WARN, "Record didn't contain match"
308 " fields in (%s,%s)", attset_str, attname_str);
316 const char *spec_src = NULL;
317 const char *s1 = ++s;
318 while (*s1 && *s1 != ' ' && *s1 != '\t')
324 memcpy (special, s, spec_len);
325 special[spec_len] = '\0';
328 if (!strcmp (special, "group"))
329 spec_src = zh->m_group;
330 else if (!strcmp (special, "database"))
331 spec_src = zh->basenames[0];
332 else if (!strcmp (special, "filename")) {
335 else if (!strcmp (special, "type"))
336 spec_src = zh->m_record_type;
341 strcpy (dst, spec_src);
342 dst += strlen (spec_src);
345 else if (*s == '\"' || *s == '\'')
347 int stopMarker = *s++;
351 while (*s && *s != stopMarker)
354 tmpString[i++] = *s++;
359 strcpy (dst, tmpString);
360 dst += strlen (tmpString);
364 yaz_log (YLOG_WARN, "Syntax error in match criteria %s in group %s",
365 spec, zh->m_group ? zh->m_group : "none");
372 yaz_log (YLOG_WARN, "No match criteria for record %s in group %s",
373 fname, zh->m_group ? zh->m_group : "none");
380 struct recordLogInfo {
383 struct recordGroup *rGroup;
386 void create_rec_keys_codec(struct recKeys *keys)
389 iscz1_reset(keys->codec_handle);
392 static int file_extract_record(ZebraHandle zh,
393 SYSNO *sysno, const char *fname,
395 struct file_read_info *fi,
398 RecordAttr *recordAttr;
400 const char *matchStr = 0;
403 off_t recordOffset = 0;
408 recType_byName (zh->reg->recTypes, zh->res, zh->m_record_type,
411 yaz_log (YLOG_WARN, "No such record type: %s", zh->m_record_type);
415 /* announce database */
416 if (zebraExplain_curDatabase (zh->reg->zei, zh->basenames[0]))
418 if (zebraExplain_newDatabase (zh->reg->zei, zh->basenames[0],
419 zh->m_explain_database))
425 struct recExtractCtrl extractCtrl;
427 /* we are going to read from a file, so prepare the extraction */
430 create_rec_keys_codec(&zh->reg->keys);
432 zh->reg->sortKeys.buf_used = 0;
434 recordOffset = fi->file_moffset;
435 extractCtrl.offset = fi->file_moffset;
436 extractCtrl.readf = file_read;
437 extractCtrl.seekf = file_seek;
438 extractCtrl.tellf = file_tell;
439 extractCtrl.endf = file_end;
441 extractCtrl.init = extract_init;
442 extractCtrl.tokenAdd = extract_token_add;
443 extractCtrl.schemaAdd = extract_schema_add;
444 extractCtrl.dh = zh->reg->dh;
445 extractCtrl.match_criteria[0] = '\0';
446 extractCtrl.handle = zh;
447 for (i = 0; i<256; i++)
449 if (zebra_maps_is_positioned(zh->reg->zebra_maps, i))
450 extractCtrl.seqno[i] = 1;
452 extractCtrl.seqno[i] = 0;
454 extractCtrl.zebra_maps = zh->reg->zebra_maps;
455 extractCtrl.flagShowRecords = !zh->m_flag_rw;
458 printf ("File: %s " PRINTF_OFF_T "\n", fname, recordOffset);
462 sprintf (msg, "%s:" PRINTF_OFF_T , fname, recordOffset);
463 yaz_log_init_prefix2 (msg);
466 r = (*recType->extract)(clientData, &extractCtrl);
468 yaz_log_init_prefix2 (0);
469 if (r == RECCTRL_EXTRACT_EOF)
471 else if (r == RECCTRL_EXTRACT_ERROR_GENERIC)
473 /* error occured during extraction ... */
475 zh->records_processed < zh->m_file_verbose_limit)
477 yaz_log (YLOG_WARN, "fail %s %s " PRINTF_OFF_T, zh->m_record_type,
478 fname, recordOffset);
482 else if (r == RECCTRL_EXTRACT_ERROR_NO_SUCH_FILTER)
484 /* error occured during extraction ... */
486 zh->records_processed < zh->m_file_verbose_limit)
488 yaz_log (YLOG_WARN, "no filter for %s %s "
489 PRINTF_OFF_T, zh->m_record_type,
490 fname, recordOffset);
494 if (extractCtrl.match_criteria[0])
495 matchStr = extractCtrl.match_criteria;
498 /* perform match if sysno not known and if match criteria is specified */
504 if (matchStr == 0 && zh->m_record_id && *zh->m_record_id)
507 matchStr = fileMatchStr (zh, &zh->reg->keys, fname,
511 yaz_log(YLOG_WARN, "Bad match criteria");
517 char *rinfo = dict_lookup (zh->reg->matchDict, matchStr);
520 assert(*rinfo == sizeof(*sysno));
521 memcpy (sysno, rinfo+1, sizeof(*sysno));
525 if (! *sysno && zh->reg->keys.buf_used == 0)
527 /* the extraction process returned no information - the record
528 is probably empty - unless flagShowRecords is in use */
532 if (zh->records_processed < zh->m_file_verbose_limit)
533 yaz_log (YLOG_WARN, "empty %s %s " PRINTF_OFF_T, zh->m_record_type,
534 fname, recordOffset);
543 yaz_log (YLOG_LOG, "delete %s %s " PRINTF_OFF_T, zh->m_record_type,
544 fname, recordOffset);
545 yaz_log (YLOG_WARN, "cannot delete record above (seems new)");
548 if (zh->records_processed < zh->m_file_verbose_limit)
549 yaz_log (YLOG_LOG, "add %s %s " PRINTF_OFF_T, zh->m_record_type,
550 fname, recordOffset);
551 rec = rec_new (zh->reg->records);
555 recordAttr = rec_init_attr (zh->reg->zei, rec);
559 dict_insert (zh->reg->matchDict, matchStr, sizeof(*sysno), sysno);
561 extract_flushSortKeys (zh, *sysno, 1, &zh->reg->sortKeys);
562 extract_flushRecordKeys (zh, *sysno, 1, &zh->reg->keys);
564 zh->records_inserted++;
568 /* record already exists */
569 struct recKeys delkeys;
570 struct sortKeys sortKeys;
572 rec = rec_get (zh->reg->records, *sysno);
575 recordAttr = rec_init_attr (zh->reg->zei, rec);
577 if (!force_update && recordAttr->runNumber ==
578 zebraExplain_runNumberIncrement (zh->reg->zei, 0))
580 yaz_log (YLOG_LOG, "run number = " ZINT_FORMAT,
581 recordAttr->runNumber);
582 yaz_log (YLOG_LOG, "skipped %s %s " PRINTF_OFF_T,
583 zh->m_record_type, fname, recordOffset);
584 extract_flushSortKeys (zh, *sysno, -1, &zh->reg->sortKeys);
589 delkeys.buf_used = rec->size[recInfo_delKeys];
590 delkeys.buf = rec->info[recInfo_delKeys];
592 sortKeys.buf_used = rec->size[recInfo_sortKeys];
593 sortKeys.buf = rec->info[recInfo_sortKeys];
595 extract_flushSortKeys (zh, *sysno, 0, &sortKeys);
596 extract_flushRecordKeys (zh, *sysno, 0, &delkeys);
599 /* record going to be deleted */
600 if (!delkeys.buf_used)
602 yaz_log (YLOG_LOG, "delete %s %s " PRINTF_OFF_T,
603 zh->m_record_type, fname, recordOffset);
604 yaz_log (YLOG_WARN, "cannot delete file above, storeKeys false");
608 if (zh->records_processed < zh->m_file_verbose_limit)
609 yaz_log (YLOG_LOG, "delete %s %s " PRINTF_OFF_T,
610 zh->m_record_type, fname, recordOffset);
611 zh->records_deleted++;
613 dict_delete (zh->reg->matchDict, matchStr);
614 rec_del (zh->reg->records, &rec);
622 /* record going to be updated */
623 if (!delkeys.buf_used)
625 yaz_log (YLOG_LOG, "update %s %s " PRINTF_OFF_T,
626 zh->m_record_type, fname, recordOffset);
627 yaz_log (YLOG_WARN, "cannot update file above, storeKeys false");
631 if (zh->records_processed < zh->m_file_verbose_limit)
632 yaz_log (YLOG_LOG, "update %s %s " PRINTF_OFF_T,
633 zh->m_record_type, fname, recordOffset);
634 extract_flushSortKeys (zh, *sysno, 1, &zh->reg->sortKeys);
635 extract_flushRecordKeys (zh, *sysno, 1, &zh->reg->keys);
636 zh->records_updated++;
640 /* update file type */
641 xfree (rec->info[recInfo_fileType]);
642 rec->info[recInfo_fileType] =
643 rec_strdup (zh->m_record_type, &rec->size[recInfo_fileType]);
645 /* update filename */
646 xfree (rec->info[recInfo_filename]);
647 rec->info[recInfo_filename] =
648 rec_strdup (fname, &rec->size[recInfo_filename]);
650 /* update delete keys */
651 xfree (rec->info[recInfo_delKeys]);
652 if (zh->reg->keys.buf_used > 0 && zh->m_store_keys == 1)
654 rec->size[recInfo_delKeys] = zh->reg->keys.buf_used;
655 rec->info[recInfo_delKeys] = zh->reg->keys.buf;
656 zh->reg->keys.buf = NULL;
657 zh->reg->keys.buf_max = 0;
661 rec->info[recInfo_delKeys] = NULL;
662 rec->size[recInfo_delKeys] = 0;
665 /* update sort keys */
666 xfree (rec->info[recInfo_sortKeys]);
668 rec->size[recInfo_sortKeys] = zh->reg->sortKeys.buf_used;
669 rec->info[recInfo_sortKeys] = zh->reg->sortKeys.buf;
670 zh->reg->sortKeys.buf = NULL;
671 zh->reg->sortKeys.buf_max = 0;
673 /* save file size of original record */
674 zebraExplain_recordBytesIncrement (zh->reg->zei,
675 - recordAttr->recordSize);
676 recordAttr->recordSize = fi->file_moffset - recordOffset;
677 if (!recordAttr->recordSize)
678 recordAttr->recordSize = fi->file_max - recordOffset;
679 zebraExplain_recordBytesIncrement (zh->reg->zei,
680 recordAttr->recordSize);
682 /* set run-number for this record */
683 recordAttr->runNumber = zebraExplain_runNumberIncrement (zh->reg->zei,
686 /* update store data */
687 xfree (rec->info[recInfo_storeData]);
688 if (zh->m_store_data)
690 rec->size[recInfo_storeData] = recordAttr->recordSize;
691 rec->info[recInfo_storeData] = (char *)
692 xmalloc (recordAttr->recordSize);
693 if (lseek (fi->fd, recordOffset, SEEK_SET) < 0)
695 yaz_log (YLOG_ERRNO|YLOG_FATAL, "seek to " PRINTF_OFF_T " in %s",
696 recordOffset, fname);
699 if (read (fi->fd, rec->info[recInfo_storeData], recordAttr->recordSize)
700 < recordAttr->recordSize)
702 yaz_log (YLOG_ERRNO|YLOG_FATAL, "read %d bytes of %s",
703 recordAttr->recordSize, fname);
709 rec->info[recInfo_storeData] = NULL;
710 rec->size[recInfo_storeData] = 0;
712 /* update database name */
713 xfree (rec->info[recInfo_databaseName]);
714 rec->info[recInfo_databaseName] =
715 rec_strdup (zh->basenames[0], &rec->size[recInfo_databaseName]);
718 recordAttr->recordOffset = recordOffset;
720 /* commit this record */
721 rec_put (zh->reg->records, &rec);
726 int fileExtract (ZebraHandle zh, SYSNO *sysno, const char *fname,
733 struct file_read_info *fi;
734 const char *original_record_type = 0;
736 if (!zh->m_group || !*zh->m_group)
739 sprintf (gprefix, "%s.", zh->m_group);
741 yaz_log (YLOG_DEBUG, "fileExtract %s", fname);
743 /* determine file extension */
745 for (i = strlen(fname); --i >= 0; )
748 else if (fname[i] == '.')
750 strcpy (ext, fname+i+1);
753 /* determine file type - depending on extension */
754 original_record_type = zh->m_record_type;
755 if (!zh->m_record_type)
757 sprintf (ext_res, "%srecordType.%s", gprefix, ext);
758 zh->m_record_type = res_get (zh->res, ext_res);
760 if (!zh->m_record_type)
762 if (zh->records_processed < zh->m_file_verbose_limit)
763 yaz_log (YLOG_LOG, "? %s", fname);
766 /* determine match criteria */
767 if (!zh->m_record_id)
769 sprintf (ext_res, "%srecordId.%s", gprefix, ext);
770 zh->m_record_id = res_get (zh->res, ext_res);
773 if (sysno && deleteFlag)
779 if (zh->path_reg && !yaz_is_abspath (fname))
781 strcpy (full_rep, zh->path_reg);
782 strcat (full_rep, "/");
783 strcat (full_rep, fname);
786 strcpy (full_rep, fname);
789 if ((fd = open (full_rep, O_BINARY|O_RDONLY)) == -1)
791 yaz_log (YLOG_WARN|YLOG_ERRNO, "open %s", full_rep);
792 zh->m_record_type = original_record_type;
796 fi = file_read_start (fd);
800 r = file_extract_record (zh, sysno, fname, deleteFlag, fi, 1);
801 } while (r && !sysno && fi->file_more);
805 zh->m_record_type = original_record_type;
810 If sysno is provided, then it's used to identify the reocord.
811 If not, and match_criteria is provided, then sysno is guessed
812 If not, and a record is provided, then sysno is got from there
815 ZEBRA_RES buffer_extract_record (ZebraHandle zh,
816 const char *buf, size_t buf_size,
819 const char *recordType,
821 const char *match_criteria,
826 RecordAttr *recordAttr;
827 struct recExtractCtrl extractCtrl;
829 const char *matchStr = 0;
830 RecType recType = NULL;
833 long recordOffset = 0;
834 struct zebra_fetch_control fc;
835 const char *pr_fname = fname; /* filename to print .. */
836 int show_progress = zh->records_processed < zh->m_file_verbose_limit ? 1:0;
839 pr_fname = "<no file>"; /* make it printable if file is omitted */
842 fc.record_int_buf = buf;
843 fc.record_int_len = buf_size;
844 fc.record_int_pos = 0;
846 fc.record_offset = 0;
848 extractCtrl.offset = 0;
849 extractCtrl.readf = zebra_record_int_read;
850 extractCtrl.seekf = zebra_record_int_seek;
851 extractCtrl.tellf = zebra_record_int_tell;
852 extractCtrl.endf = zebra_record_int_end;
853 extractCtrl.fh = &fc;
855 create_rec_keys_codec(&zh->reg->keys);
857 zh->reg->sortKeys.buf_used = 0;
859 if (zebraExplain_curDatabase (zh->reg->zei, zh->basenames[0]))
861 if (zebraExplain_newDatabase (zh->reg->zei, zh->basenames[0],
862 zh->m_explain_database))
866 if (recordType && *recordType)
868 yaz_log (YLOG_DEBUG, "Record type explicitly specified: %s", recordType);
869 recType = recType_byName (zh->reg->recTypes, zh->res, recordType,
874 if (!(zh->m_record_type))
876 yaz_log (YLOG_WARN, "No such record type defined");
879 yaz_log (YLOG_DEBUG, "Get record type from rgroup: %s",zh->m_record_type);
880 recType = recType_byName (zh->reg->recTypes, zh->res,
881 zh->m_record_type, &clientData);
882 recordType = zh->m_record_type;
887 yaz_log (YLOG_WARN, "No such record type: %s", zh->m_record_type);
891 extractCtrl.init = extract_init;
892 extractCtrl.tokenAdd = extract_token_add;
893 extractCtrl.schemaAdd = extract_schema_add;
894 extractCtrl.dh = zh->reg->dh;
895 extractCtrl.handle = zh;
896 extractCtrl.zebra_maps = zh->reg->zebra_maps;
897 extractCtrl.flagShowRecords = 0;
898 extractCtrl.match_criteria[0] = '\0';
899 for (i = 0; i<256; i++)
901 if (zebra_maps_is_positioned(zh->reg->zebra_maps, i))
902 extractCtrl.seqno[i] = 1;
904 extractCtrl.seqno[i] = 0;
907 r = (*recType->extract)(clientData, &extractCtrl);
909 if (r == RECCTRL_EXTRACT_EOF)
911 else if (r == RECCTRL_EXTRACT_ERROR_GENERIC)
913 /* error occured during extraction ... */
914 yaz_log (YLOG_WARN, "extract error: generic");
917 else if (r == RECCTRL_EXTRACT_ERROR_NO_SUCH_FILTER)
919 /* error occured during extraction ... */
920 yaz_log (YLOG_WARN, "extract error: no such filter");
926 if (extractCtrl.match_criteria[0])
927 match_criteria = extractCtrl.match_criteria;
931 if (match_criteria && *match_criteria) {
932 matchStr = match_criteria;
934 if (zh->m_record_id && *zh->m_record_id) {
935 matchStr = fileMatchStr (zh, &zh->reg->keys, pr_fname,
939 yaz_log (YLOG_WARN, "Bad match criteria (recordID)");
945 rinfo = dict_lookup (zh->reg->matchDict, matchStr);
948 assert(*rinfo == sizeof(*sysno));
949 memcpy (sysno, rinfo+1, sizeof(*sysno));
953 if (zh->reg->keys.buf_used == 0)
955 /* the extraction process returned no information - the record
956 is probably empty - unless flagShowRecords is in use */
967 yaz_log (YLOG_LOG, "delete %s %s %ld", recordType,
968 pr_fname, (long) recordOffset);
969 yaz_log (YLOG_WARN, "cannot delete record above (seems new)");
973 yaz_log (YLOG_LOG, "add %s %s %ld", recordType, pr_fname,
974 (long) recordOffset);
975 rec = rec_new (zh->reg->records);
979 recordAttr = rec_init_attr (zh->reg->zei, rec);
983 dict_insert (zh->reg->matchDict, matchStr,
984 sizeof(*sysno), sysno);
986 extract_flushSortKeys (zh, *sysno, 1, &zh->reg->sortKeys);
987 extract_flushRecordKeys (zh, *sysno, 1, &zh->reg->keys);
989 zh->records_inserted++;
993 /* record already exists */
994 struct recKeys delkeys;
995 struct sortKeys sortKeys;
1000 yaz_log (YLOG_LOG, "skipped %s %s %ld",
1001 recordType, pr_fname, (long) recordOffset);
1006 rec = rec_get (zh->reg->records, *sysno);
1009 recordAttr = rec_init_attr (zh->reg->zei, rec);
1011 if (!force_update) {
1012 if (recordAttr->runNumber ==
1013 zebraExplain_runNumberIncrement (zh->reg->zei, 0))
1016 yaz_log (YLOG_LOG, "skipped %s %s %ld", recordType,
1017 pr_fname, (long) recordOffset);
1018 extract_flushSortKeys (zh, *sysno, -1, &zh->reg->sortKeys);
1025 delkeys.buf_used = rec->size[recInfo_delKeys];
1026 delkeys.buf = rec->info[recInfo_delKeys];
1028 sortKeys.buf_used = rec->size[recInfo_sortKeys];
1029 sortKeys.buf = rec->info[recInfo_sortKeys];
1031 extract_flushSortKeys (zh, *sysno, 0, &sortKeys);
1032 extract_flushRecordKeys (zh, *sysno, 0, &delkeys);
1035 /* record going to be deleted */
1036 if (!delkeys.buf_used)
1040 yaz_log (YLOG_LOG, "delete %s %s %ld", recordType,
1041 pr_fname, (long) recordOffset);
1042 yaz_log (YLOG_WARN, "cannot delete file above, "
1049 yaz_log (YLOG_LOG, "delete %s %s %ld", recordType,
1050 pr_fname, (long) recordOffset);
1051 zh->records_deleted++;
1053 dict_delete (zh->reg->matchDict, matchStr);
1054 rec_del (zh->reg->records, &rec);
1062 /* record going to be updated */
1063 if (!delkeys.buf_used)
1067 yaz_log (YLOG_LOG, "update %s %s %ld", recordType,
1068 pr_fname, (long) recordOffset);
1069 yaz_log (YLOG_WARN, "cannot update file above, storeKeys false");
1075 yaz_log (YLOG_LOG, "update %s %s %ld", recordType,
1076 pr_fname, (long) recordOffset);
1077 extract_flushSortKeys (zh, *sysno, 1, &zh->reg->sortKeys);
1078 extract_flushRecordKeys (zh, *sysno, 1, &zh->reg->keys);
1079 zh->records_updated++;
1083 /* update file type */
1084 xfree (rec->info[recInfo_fileType]);
1085 rec->info[recInfo_fileType] =
1086 rec_strdup (recordType, &rec->size[recInfo_fileType]);
1088 /* update filename */
1089 xfree (rec->info[recInfo_filename]);
1090 rec->info[recInfo_filename] =
1091 rec_strdup (fname, &rec->size[recInfo_filename]);
1093 /* update delete keys */
1094 xfree (rec->info[recInfo_delKeys]);
1095 if (zh->reg->keys.buf_used > 0 && zh->m_store_keys == 1)
1097 rec->size[recInfo_delKeys] = zh->reg->keys.buf_used;
1098 rec->info[recInfo_delKeys] = zh->reg->keys.buf;
1099 zh->reg->keys.buf = NULL;
1100 zh->reg->keys.buf_max = 0;
1104 rec->info[recInfo_delKeys] = NULL;
1105 rec->size[recInfo_delKeys] = 0;
1108 /* update sort keys */
1109 xfree (rec->info[recInfo_sortKeys]);
1111 rec->size[recInfo_sortKeys] = zh->reg->sortKeys.buf_used;
1112 rec->info[recInfo_sortKeys] = zh->reg->sortKeys.buf;
1113 zh->reg->sortKeys.buf = NULL;
1114 zh->reg->sortKeys.buf_max = 0;
1116 /* save file size of original record */
1117 zebraExplain_recordBytesIncrement (zh->reg->zei,
1118 - recordAttr->recordSize);
1120 recordAttr->recordSize = fi->file_moffset - recordOffset;
1121 if (!recordAttr->recordSize)
1122 recordAttr->recordSize = fi->file_max - recordOffset;
1124 recordAttr->recordSize = buf_size;
1126 zebraExplain_recordBytesIncrement (zh->reg->zei,
1127 recordAttr->recordSize);
1129 /* set run-number for this record */
1130 recordAttr->runNumber =
1131 zebraExplain_runNumberIncrement (zh->reg->zei, 0);
1133 /* update store data */
1134 xfree (rec->info[recInfo_storeData]);
1135 if (zh->m_store_data)
1137 rec->size[recInfo_storeData] = recordAttr->recordSize;
1138 rec->info[recInfo_storeData] = (char *)
1139 xmalloc (recordAttr->recordSize);
1140 memcpy (rec->info[recInfo_storeData], buf, recordAttr->recordSize);
1144 rec->info[recInfo_storeData] = NULL;
1145 rec->size[recInfo_storeData] = 0;
1147 /* update database name */
1148 xfree (rec->info[recInfo_databaseName]);
1149 rec->info[recInfo_databaseName] =
1150 rec_strdup (zh->basenames[0], &rec->size[recInfo_databaseName]);
1153 recordAttr->recordOffset = recordOffset;
1155 /* commit this record */
1156 rec_put (zh->reg->records, &rec);
1161 int explain_extract (void *handle, Record rec, data1_node *n)
1163 ZebraHandle zh = (ZebraHandle) handle;
1164 struct recExtractCtrl extractCtrl;
1167 if (zebraExplain_curDatabase (zh->reg->zei,
1168 rec->info[recInfo_databaseName]))
1171 if (zebraExplain_newDatabase (zh->reg->zei,
1172 rec->info[recInfo_databaseName], 0))
1176 create_rec_keys_codec(&zh->reg->keys);
1178 zh->reg->sortKeys.buf_used = 0;
1180 extractCtrl.init = extract_init;
1181 extractCtrl.tokenAdd = extract_token_add;
1182 extractCtrl.schemaAdd = extract_schema_add;
1183 extractCtrl.dh = zh->reg->dh;
1184 for (i = 0; i<256; i++)
1185 extractCtrl.seqno[i] = 0;
1186 extractCtrl.zebra_maps = zh->reg->zebra_maps;
1187 extractCtrl.flagShowRecords = 0;
1188 extractCtrl.match_criteria[0] = '\0';
1189 extractCtrl.handle = handle;
1192 grs_extract_tree(&extractCtrl, n);
1194 if (rec->size[recInfo_delKeys])
1196 struct recKeys delkeys;
1197 struct sortKeys sortkeys;
1199 delkeys.buf_used = rec->size[recInfo_delKeys];
1200 delkeys.buf = rec->info[recInfo_delKeys];
1202 sortkeys.buf_used = rec->size[recInfo_sortKeys];
1203 sortkeys.buf = rec->info[recInfo_sortKeys];
1205 extract_flushSortKeys (zh, rec->sysno, 0, &sortkeys);
1206 extract_flushRecordKeys (zh, rec->sysno, 0, &delkeys);
1208 extract_flushRecordKeys (zh, rec->sysno, 1, &zh->reg->keys);
1209 extract_flushSortKeys (zh, rec->sysno, 1, &zh->reg->sortKeys);
1211 xfree (rec->info[recInfo_delKeys]);
1212 rec->size[recInfo_delKeys] = zh->reg->keys.buf_used;
1213 rec->info[recInfo_delKeys] = zh->reg->keys.buf;
1214 zh->reg->keys.buf = NULL;
1215 zh->reg->keys.buf_max = 0;
1217 xfree (rec->info[recInfo_sortKeys]);
1218 rec->size[recInfo_sortKeys] = zh->reg->sortKeys.buf_used;
1219 rec->info[recInfo_sortKeys] = zh->reg->sortKeys.buf;
1220 zh->reg->sortKeys.buf = NULL;
1221 zh->reg->sortKeys.buf_max = 0;
1226 void extract_flushRecordKeys (ZebraHandle zh, SYSNO sysno,
1227 int cmd, struct recKeys *reckeys)
1229 void *decode_handle = iscz1_start();
1232 ZebraExplainInfo zei = zh->reg->zei;
1234 if (!zh->reg->key_buf)
1236 int mem= 1024*1024* atoi( res_get_def( zh->res, "memmax", "8"));
1239 yaz_log(YLOG_WARN, "Invalid memory setting, using default 8 MB");
1242 /* FIXME: That "8" should be in a default settings include */
1243 /* not hard-coded here! -H */
1244 zh->reg->key_buf = (char**) xmalloc (mem);
1245 zh->reg->ptr_top = mem/sizeof(char*);
1247 zh->reg->key_buf_used = 0;
1248 zh->reg->key_file_no = 0;
1250 zebraExplain_recordCountIncrement (zei, cmd ? 1 : -1);
1252 while (off < reckeys->buf_used)
1254 const char *src = reckeys->buf + off;
1256 char *dst = (char*) &key;
1258 iscz1_decode(decode_handle, &dst, &src);
1259 assert(key.len == 4);
1261 if (zh->reg->key_buf_used + 1024 >
1262 (zh->reg->ptr_top -zh->reg->ptr_i)*sizeof(char*))
1263 extract_flushWriteKeys (zh,0);
1265 assert(zh->reg->ptr_i > 0);
1266 (zh->reg->key_buf)[zh->reg->ptr_top - zh->reg->ptr_i] =
1267 (char*)zh->reg->key_buf + zh->reg->key_buf_used;
1269 ch = (int) key.mem[0]; /* ordinal for field/use/attribute */
1271 zh->reg->key_buf_used +=
1272 key_SU_encode (ch,((char*)zh->reg->key_buf) +
1273 zh->reg->key_buf_used);
1275 ((char*)zh->reg->key_buf) [(zh->reg->key_buf_used)++] = *src++;
1277 ((char*)(zh->reg->key_buf))[(zh->reg->key_buf_used)++] = '\0';
1278 ((char*)(zh->reg->key_buf))[(zh->reg->key_buf_used)++] = cmd;
1281 if (key.mem[1]) /* filter specified record ID */
1282 key.mem[0] = key.mem[1];
1285 key.mem[1] = key.mem[2]; /* section_id */
1286 key.mem[2] = key.mem[3]; /* sequence .. */
1288 memcpy ((char*)zh->reg->key_buf + zh->reg->key_buf_used,
1290 (zh->reg->key_buf_used) += sizeof(key);
1291 off = src - reckeys->buf;
1293 assert (off == reckeys->buf_used);
1294 iscz1_stop(decode_handle);
1297 void extract_flushWriteKeys (ZebraHandle zh, int final)
1298 /* optimizing: if final=1, and no files written yet */
1299 /* push the keys directly to merge, sidestepping the */
1300 /* temp file altogether. Speeds small updates */
1303 char out_fname[200];
1305 struct encode_info encode_info;
1306 int ptr_i = zh->reg->ptr_i;
1311 if (!zh->reg->key_buf || ptr_i <= 0)
1313 yaz_log (YLOG_DEBUG, " nothing to flush section=%d buf=%p i=%d",
1314 zh->reg->key_file_no, zh->reg->key_buf, ptr_i);
1315 yaz_log (YLOG_DEBUG, " buf=%p ",
1317 yaz_log (YLOG_DEBUG, " ptr=%d ",zh->reg->ptr_i);
1318 yaz_log (YLOG_DEBUG, " reg=%p ",zh->reg);
1323 (zh->reg->key_file_no)++;
1324 yaz_log (YLOG_LOG, "sorting section %d", (zh->reg->key_file_no));
1325 yaz_log (YLOG_DEBUG, " sort_buff at %p n=%d",
1326 zh->reg->key_buf + zh->reg->ptr_top - ptr_i,ptr_i);
1328 qsort (zh->reg->key_buf + zh->reg->ptr_top - ptr_i, ptr_i,
1329 sizeof(char*), key_qsort_compare);
1331 /* zebra.cfg: tempfiles:
1332 Y: always use temp files (old way)
1333 A: use temp files, if more than one (auto)
1334 = if this is both the last and the first
1335 N: never bother with temp files (new) */
1337 temp_policy=toupper(res_get_def(zh->res,"tempfiles","auto")[0]);
1338 if (temp_policy != 'Y' && temp_policy != 'N' && temp_policy != 'A') {
1339 yaz_log (YLOG_WARN, "Illegal tempfiles setting '%c'. using 'Auto' ",
1344 if ( ( temp_policy =='N' ) || /* always from memory */
1345 ( ( temp_policy =='A' ) && /* automatic */
1346 (zh->reg->key_file_no == 1) && /* this is first time */
1347 (final) ) ) /* and last (=only) time */
1348 { /* go directly from memory */
1349 zh->reg->key_file_no =0; /* signal not to read files */
1350 zebra_index_merge(zh);
1352 zh->reg->key_buf_used = 0;
1356 /* Not doing directly from memory, write into a temp file */
1357 extract_get_fname_tmp (zh, out_fname, zh->reg->key_file_no);
1359 if (!(outf = fopen (out_fname, "wb")))
1361 yaz_log (YLOG_FATAL|YLOG_ERRNO, "fopen %s", out_fname);
1364 yaz_log (YLOG_LOG, "writing section %d", zh->reg->key_file_no);
1365 prevcp = cp = (zh->reg->key_buf)[zh->reg->ptr_top - ptr_i];
1367 encode_key_init (&encode_info);
1368 encode_key_write (cp, &encode_info, outf);
1372 cp = (zh->reg->key_buf)[zh->reg->ptr_top - ptr_i];
1373 if (strcmp (cp, prevcp))
1375 encode_key_flush ( &encode_info, outf);
1376 encode_key_init (&encode_info);
1377 encode_key_write (cp, &encode_info, outf);
1381 encode_key_write (cp + strlen(cp), &encode_info, outf);
1383 encode_key_flush ( &encode_info, outf);
1385 qsort (key_buf + ptr_top-ptr_i, ptr_i, sizeof(char*), key_x_compare);
1386 extract_get_fname_tmp (out_fname, key_file_no);
1388 if (!(outf = fopen (out_fname, "wb")))
1390 yaz_log (YLOG_FATAL|YLOG_ERRNO, "fopen %s", out_fname);
1393 yaz_log (YLOG_LOG, "writing section %d", key_file_no);
1395 prevcp = key_buf[ptr_top-i];
1397 if (!--i || strcmp (prevcp, key_buf[ptr_top-i]))
1399 key_y_len = strlen(prevcp)+1;
1401 yaz_log (YLOG_LOG, "key_y_len: %2d %02x %02x %s",
1402 key_y_len, prevcp[0], prevcp[1], 2+prevcp);
1404 qsort (key_buf + ptr_top-ptr_i, ptr_i - i,
1405 sizeof(char*), key_y_compare);
1406 cp = key_buf[ptr_top-ptr_i];
1408 encode_key_init (&encode_info);
1409 encode_key_write (cp, &encode_info, outf);
1412 cp = key_buf[ptr_top-ptr_i];
1413 encode_key_write (cp+key_y_len, &encode_info, outf);
1415 encode_key_flush ( &encode_info, outf);
1418 prevcp = key_buf[ptr_top-ptr_i];
1423 yaz_log (YLOG_FATAL|YLOG_ERRNO, "fclose %s", out_fname);
1426 yaz_log (YLOG_LOG, "finished section %d", zh->reg->key_file_no);
1428 zh->reg->key_buf_used = 0;
1431 void extract_add_it_key (ZebraHandle zh,
1433 const char *str, int slen, struct it_key *key)
1436 struct recKeys *keys = &zh->reg->keys;
1437 const char *src = (char*) key;
1439 if (keys->buf_used+1024 > keys->buf_max)
1441 char *b = (char *) xmalloc (keys->buf_max += 128000);
1442 if (keys->buf_used > 0)
1443 memcpy (b, keys->buf, keys->buf_used);
1447 dst = keys->buf + keys->buf_used;
1449 iscz1_encode(keys->codec_handle, &dst, &src);
1452 memcpy (dst, str, slen);
1455 keys->buf_used = dst - keys->buf;
1458 void extract_add_index_string (RecWord *p, const char *str, int length)
1462 ZebraHandle zh = p->extractCtrl->handle;
1463 ZebraExplainInfo zei = zh->reg->zei;
1468 ch = zebraExplain_lookup_attr_str(zei, p->attrStr);
1470 ch = zebraExplain_add_attr_str(zei, p->attrStr);
1474 ch = zebraExplain_lookup_attr_su(zei, p->attrSet, p->attrUse);
1476 ch = zebraExplain_add_attr_su(zei, p->attrSet, p->attrUse);
1480 key.mem[1] = p->record_id;
1481 key.mem[2] = p->section_id;
1482 key.mem[3] = p->seqno;
1485 /* just for debugging .. */
1486 yaz_log(YLOG_LOG, "add: set=%d use=%d "
1487 "record_id=%lld section_id=%lld seqno=%lld",
1488 p->attrSet, p->attrUse, p->record_id, p->section_id, p->seqno);
1491 extract_add_it_key(p->extractCtrl->handle, p->reg_type, str,
1495 static void extract_add_sort_string (RecWord *p, const char *str,
1498 ZebraHandle zh = p->extractCtrl->handle;
1499 struct sortKeys *sk = &zh->reg->sortKeys;
1502 while (off < sk->buf_used)
1506 off += key_SU_decode(&set, sk->buf + off);
1507 off += key_SU_decode(&use, sk->buf + off);
1508 off += key_SU_decode(&slen, sk->buf + off);
1510 if (p->attrSet == set && p->attrUse == use)
1513 assert (off == sk->buf_used);
1515 if (sk->buf_used + IT_MAX_WORD > sk->buf_max)
1519 b = (char *) xmalloc (sk->buf_max += 128000);
1520 if (sk->buf_used > 0)
1521 memcpy (b, sk->buf, sk->buf_used);
1525 off += key_SU_encode(p->attrSet, sk->buf + off);
1526 off += key_SU_encode(p->attrUse, sk->buf + off);
1527 off += key_SU_encode(length, sk->buf + off);
1528 memcpy (sk->buf + off, str, length);
1529 sk->buf_used = off + length;
1532 void extract_add_string (RecWord *p, const char *string, int length)
1534 assert (length > 0);
1535 if (zebra_maps_is_sort (p->zebra_maps, p->reg_type))
1536 extract_add_sort_string (p, string, length);
1538 extract_add_index_string (p, string, length);
1541 static void extract_add_incomplete_field (RecWord *p)
1543 const char *b = p->term_buf;
1544 int remain = p->term_len;
1545 const char **map = 0;
1547 yaz_log(YLOG_DEBUG, "Incomplete field, w='%.*s'", p->term_len, p->term_buf);
1550 map = zebra_maps_input(p->zebra_maps, p->reg_type, &b, remain, 0);
1554 char buf[IT_MAX_WORD+1];
1558 while (map && *map && **map == *CHR_SPACE)
1560 remain = p->term_len - (b - p->term_buf);
1562 map = zebra_maps_input(p->zebra_maps, p->reg_type, &b, remain, 0);
1569 while (map && *map && **map != *CHR_SPACE)
1571 const char *cp = *map;
1573 while (i < IT_MAX_WORD && *cp)
1575 remain = p->term_len - (b - p->term_buf);
1577 map = zebra_maps_input(p->zebra_maps, p->reg_type, &b, remain, 0);
1583 extract_add_string (p, buf, i);
1588 static void extract_add_complete_field (RecWord *p)
1590 const char *b = p->term_buf;
1591 char buf[IT_MAX_WORD+1];
1592 const char **map = 0;
1593 int i = 0, remain = p->term_len;
1595 yaz_log(YLOG_DEBUG, "Complete field, w='%.*s'",
1596 p->term_len, p->term_buf);
1599 map = zebra_maps_input (p->zebra_maps, p->reg_type, &b, remain, 1);
1601 while (remain > 0 && i < IT_MAX_WORD)
1603 while (map && *map && **map == *CHR_SPACE)
1605 remain = p->term_len - (b - p->term_buf);
1609 int first = i ? 0 : 1; /* first position */
1610 map = zebra_maps_input(p->zebra_maps, p->reg_type, &b, remain, first);
1618 if (i && i < IT_MAX_WORD)
1619 buf[i++] = *CHR_SPACE;
1620 while (map && *map && **map != *CHR_SPACE)
1622 const char *cp = *map;
1624 if (**map == *CHR_CUT)
1630 if (i >= IT_MAX_WORD)
1632 yaz_log(YLOG_DEBUG, "Adding string to index '%d'", **map);
1633 while (i < IT_MAX_WORD && *cp)
1636 remain = p->term_len - (b - p->term_buf);
1639 map = zebra_maps_input (p->zebra_maps, p->reg_type, &b,
1648 extract_add_string (p, buf, i);
1651 void extract_token_add (RecWord *p)
1655 yaz_log (YLOG_LOG, "token_add "
1656 "reg_type=%c attrSet=%d attrUse=%d seqno=%d s=%.*s",
1657 p->reg_type, p->attrSet, p->attrUse, p->seqno, p->length,
1660 if ((wrbuf = zebra_replace(p->zebra_maps, p->reg_type, 0,
1661 p->term_buf, p->term_len)))
1663 p->term_buf = wrbuf_buf(wrbuf);
1664 p->term_len = wrbuf_len(wrbuf);
1666 if (zebra_maps_is_complete (p->zebra_maps, p->reg_type))
1667 extract_add_complete_field (p);
1669 extract_add_incomplete_field(p);
1672 void extract_schema_add (struct recExtractCtrl *p, Odr_oid *oid)
1674 ZebraHandle zh = (ZebraHandle) (p->handle);
1675 zebraExplain_addSchema (zh->reg->zei, oid);
1678 void extract_flushSortKeys (ZebraHandle zh, SYSNO sysno,
1679 int cmd, struct sortKeys *sk)
1681 SortIdx sortIdx = zh->reg->sortIdx;
1684 sortIdx_sysno (sortIdx, sysno);
1686 while (off < sk->buf_used)
1690 off += key_SU_decode(&set, sk->buf + off);
1691 off += key_SU_decode(&use, sk->buf + off);
1692 off += key_SU_decode(&slen, sk->buf + off);
1694 sortIdx_type(sortIdx, use);
1696 sortIdx_add(sortIdx, sk->buf + off, slen);
1698 sortIdx_add(sortIdx, "", 1);
1703 void encode_key_init (struct encode_info *i)
1712 i->encode_handle = iscz1_start();
1718 /* this is the old encode_key_write
1719 * may be deleted once we are confident that the new works
1722 void encode_key_write (char *k, struct encode_info *i, FILE *outf)
1725 char *bp = i->buf, *bp0;
1726 const char *src = (char *) &key;
1728 /* copy term to output buf */
1729 while ((*bp++ = *k++))
1731 /* and copy & align key so we can mangle */
1732 memcpy (&key, k+1, sizeof(struct it_key)); /* *k is insert/delete */
1735 iscz1_encode(i->encode_handle, &bp, &src);
1736 *bp0 = (*k * 128) + bp - bp0 - 1; /* length and insert/delete combined */
1737 if (fwrite (i->buf, bp - i->buf, 1, outf) != 1)
1739 yaz_log (YLOG_FATAL|YLOG_ERRNO, "fwrite");
1744 void encode_key_flush (struct encode_info *i, FILE *outf)
1745 { /* dummy routine */
1746 iscz1_stop(i->encode_handle);
1751 /* new encode_key_write
1752 * The idea is to buffer one more key, and compare them
1753 * If we are going to delete and insert the same key,
1754 * we may as well not bother. Should make a difference in
1755 * updates with small modifications (appending to a mbox)
1757 void encode_key_write (char *k, struct encode_info *i, FILE *outf)
1762 if (*k) /* first time for new key */
1765 while ((*bp++ = *k++))
1767 i->keylen= bp - i->buf -1;
1768 assert(i->keylen+1+sizeof(struct it_key) < ENCODE_BUFLEN);
1772 bp=i->buf + i->keylen;
1777 memcpy (&key, k+1, sizeof(struct it_key));
1778 if (0==i->prevsys) /* no previous filter, fill up */
1780 i->prevsys=key.sysno;
1781 i->prevseq=key.seqno;
1784 else if ( (i->prevsys==key.sysno) &&
1785 (i->prevseq==key.seqno) &&
1787 { /* same numbers, diff cmd, they cancel out */
1791 { /* different stuff, write previous, move buf */
1792 bp = encode_key_int ( (i->prevsys - i->sysno) * 2 + i->prevcmd, bp);
1793 if (i->sysno != i->prevsys)
1795 i->sysno = i->prevsys;
1798 else if (!i->seqno && !i->prevseq && i->cmd == i->prevcmd)
1800 return; /* ??? Filters some sort of duplicates away */
1801 /* ??? Can this ever happen -H 15oct02 */
1803 bp = encode_key_int (i->prevseq - i->seqno, bp);
1804 i->seqno = i->prevseq;
1805 i->cmd = i->prevcmd;
1806 if (fwrite (i->buf, bp - i->buf, 1, outf) != 1)
1808 yaz_log (YLOG_FATAL|YLOG_ERRNO, "fwrite");
1811 i->keylen=0; /* ok, it's written, forget it */
1812 i->prevsys=key.sysno;
1813 i->prevseq=key.seqno;
1818 void encode_key_flush (struct encode_info *i, FILE *outf)
1819 { /* flush the last key from i */
1820 char *bp =i->buf + i->keylen;
1823 return; /* nothing to flush */
1826 bp = encode_key_int ( (i->prevsys - i->sysno) * 2 + i->prevcmd, bp);
1827 if (i->sysno != i->prevsys)
1829 i->sysno = i->prevsys;
1832 else if (!i->seqno && !i->prevseq && i->cmd == i->prevcmd)
1834 return; /* ??? Filters some sort of duplicates away */
1835 /* ??? Can this ever happen -H 15oct02 */
1837 bp = encode_key_int (i->prevseq - i->seqno, bp);
1838 i->seqno = i->prevseq;
1839 i->cmd = i->prevcmd;
1840 if (fwrite (i->buf, bp - i->buf, 1, outf) != 1)
1842 yaz_log (YLOG_FATAL|YLOG_ERRNO, "fwrite");
1845 i->keylen=0; /* ok, it's written, forget it */
1846 i->prevsys=0; /* forget the values too */