1 /* $Id: extract.c,v 1.172 2005-03-05 09:19:14 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 (zh->reg->keys.buf_used == 0)
496 /* the extraction process returned no information - the record
497 is probably empty - unless flagShowRecords is in use */
501 if (zh->records_processed < zh->m_file_verbose_limit)
502 yaz_log (YLOG_WARN, "empty %s %s " PRINTF_OFF_T, zh->m_record_type,
503 fname, recordOffset);
506 if (extractCtrl.match_criteria[0])
507 matchStr = extractCtrl.match_criteria;
510 /* perform match if sysno not known and if match criteria is specified */
516 if (matchStr == 0 && zh->m_record_id && *zh->m_record_id)
519 matchStr = fileMatchStr (zh, &zh->reg->keys, fname,
523 yaz_log(YLOG_WARN, "Bad match criteria");
529 char *rinfo = dict_lookup (zh->reg->matchDict, matchStr);
532 assert(*rinfo == sizeof(*sysno));
533 memcpy (sysno, rinfo+1, sizeof(*sysno));
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 = %d", recordAttr->runNumber);
581 yaz_log (YLOG_LOG, "skipped %s %s " PRINTF_OFF_T,
582 zh->m_record_type, fname, recordOffset);
583 extract_flushSortKeys (zh, *sysno, -1, &zh->reg->sortKeys);
588 delkeys.buf_used = rec->size[recInfo_delKeys];
589 delkeys.buf = rec->info[recInfo_delKeys];
591 sortKeys.buf_used = rec->size[recInfo_sortKeys];
592 sortKeys.buf = rec->info[recInfo_sortKeys];
594 extract_flushSortKeys (zh, *sysno, 0, &sortKeys);
595 extract_flushRecordKeys (zh, *sysno, 0, &delkeys);
598 /* record going to be deleted */
599 if (!delkeys.buf_used)
601 yaz_log (YLOG_LOG, "delete %s %s " PRINTF_OFF_T,
602 zh->m_record_type, fname, recordOffset);
603 yaz_log (YLOG_WARN, "cannot delete file above, storeKeys false");
607 if (zh->records_processed < zh->m_file_verbose_limit)
608 yaz_log (YLOG_LOG, "delete %s %s " PRINTF_OFF_T,
609 zh->m_record_type, fname, recordOffset);
610 zh->records_deleted++;
612 dict_delete (zh->reg->matchDict, matchStr);
613 rec_del (zh->reg->records, &rec);
621 /* record going to be updated */
622 if (!delkeys.buf_used)
624 yaz_log (YLOG_LOG, "update %s %s " PRINTF_OFF_T,
625 zh->m_record_type, fname, recordOffset);
626 yaz_log (YLOG_WARN, "cannot update file above, storeKeys false");
630 if (zh->records_processed < zh->m_file_verbose_limit)
631 yaz_log (YLOG_LOG, "update %s %s " PRINTF_OFF_T,
632 zh->m_record_type, fname, recordOffset);
633 extract_flushSortKeys (zh, *sysno, 1, &zh->reg->sortKeys);
634 extract_flushRecordKeys (zh, *sysno, 1, &zh->reg->keys);
635 zh->records_updated++;
639 /* update file type */
640 xfree (rec->info[recInfo_fileType]);
641 rec->info[recInfo_fileType] =
642 rec_strdup (zh->m_record_type, &rec->size[recInfo_fileType]);
644 /* update filename */
645 xfree (rec->info[recInfo_filename]);
646 rec->info[recInfo_filename] =
647 rec_strdup (fname, &rec->size[recInfo_filename]);
649 /* update delete keys */
650 xfree (rec->info[recInfo_delKeys]);
651 if (zh->reg->keys.buf_used > 0 && zh->m_store_keys == 1)
653 rec->size[recInfo_delKeys] = zh->reg->keys.buf_used;
654 rec->info[recInfo_delKeys] = zh->reg->keys.buf;
655 zh->reg->keys.buf = NULL;
656 zh->reg->keys.buf_max = 0;
660 rec->info[recInfo_delKeys] = NULL;
661 rec->size[recInfo_delKeys] = 0;
664 /* update sort keys */
665 xfree (rec->info[recInfo_sortKeys]);
667 rec->size[recInfo_sortKeys] = zh->reg->sortKeys.buf_used;
668 rec->info[recInfo_sortKeys] = zh->reg->sortKeys.buf;
669 zh->reg->sortKeys.buf = NULL;
670 zh->reg->sortKeys.buf_max = 0;
672 /* save file size of original record */
673 zebraExplain_recordBytesIncrement (zh->reg->zei,
674 - recordAttr->recordSize);
675 recordAttr->recordSize = fi->file_moffset - recordOffset;
676 if (!recordAttr->recordSize)
677 recordAttr->recordSize = fi->file_max - recordOffset;
678 zebraExplain_recordBytesIncrement (zh->reg->zei,
679 recordAttr->recordSize);
681 /* set run-number for this record */
682 recordAttr->runNumber = zebraExplain_runNumberIncrement (zh->reg->zei,
685 /* update store data */
686 xfree (rec->info[recInfo_storeData]);
687 if (zh->m_store_data)
689 rec->size[recInfo_storeData] = recordAttr->recordSize;
690 rec->info[recInfo_storeData] = (char *)
691 xmalloc (recordAttr->recordSize);
692 if (lseek (fi->fd, recordOffset, SEEK_SET) < 0)
694 yaz_log (YLOG_ERRNO|YLOG_FATAL, "seek to " PRINTF_OFF_T " in %s",
695 recordOffset, fname);
698 if (read (fi->fd, rec->info[recInfo_storeData], recordAttr->recordSize)
699 < recordAttr->recordSize)
701 yaz_log (YLOG_ERRNO|YLOG_FATAL, "read %d bytes of %s",
702 recordAttr->recordSize, fname);
708 rec->info[recInfo_storeData] = NULL;
709 rec->size[recInfo_storeData] = 0;
711 /* update database name */
712 xfree (rec->info[recInfo_databaseName]);
713 rec->info[recInfo_databaseName] =
714 rec_strdup (zh->basenames[0], &rec->size[recInfo_databaseName]);
717 recordAttr->recordOffset = recordOffset;
719 /* commit this record */
720 rec_put (zh->reg->records, &rec);
725 int fileExtract (ZebraHandle zh, SYSNO *sysno, const char *fname,
732 struct file_read_info *fi;
733 const char *original_record_type = 0;
735 if (!zh->m_group || !*zh->m_group)
738 sprintf (gprefix, "%s.", zh->m_group);
740 yaz_log (YLOG_DEBUG, "fileExtract %s", fname);
742 /* determine file extension */
744 for (i = strlen(fname); --i >= 0; )
747 else if (fname[i] == '.')
749 strcpy (ext, fname+i+1);
752 /* determine file type - depending on extension */
753 original_record_type = zh->m_record_type;
754 if (!zh->m_record_type)
756 sprintf (ext_res, "%srecordType.%s", gprefix, ext);
757 zh->m_record_type = res_get (zh->res, ext_res);
759 if (!zh->m_record_type)
761 if (zh->records_processed < zh->m_file_verbose_limit)
762 yaz_log (YLOG_LOG, "? %s", fname);
765 /* determine match criteria */
766 if (!zh->m_record_id)
768 sprintf (ext_res, "%srecordId.%s", gprefix, ext);
769 zh->m_record_id = res_get (zh->res, ext_res);
772 if (sysno && deleteFlag)
778 if (zh->path_reg && !yaz_is_abspath (fname))
780 strcpy (full_rep, zh->path_reg);
781 strcat (full_rep, "/");
782 strcat (full_rep, fname);
785 strcpy (full_rep, fname);
788 if ((fd = open (full_rep, O_BINARY|O_RDONLY)) == -1)
790 yaz_log (YLOG_WARN|YLOG_ERRNO, "open %s", full_rep);
791 zh->m_record_type = original_record_type;
795 fi = file_read_start (fd);
799 r = file_extract_record (zh, sysno, fname, deleteFlag, fi, 1);
800 } while (r && !sysno && fi->file_more);
804 zh->m_record_type = original_record_type;
809 If sysno is provided, then it's used to identify the reocord.
810 If not, and match_criteria is provided, then sysno is guessed
811 If not, and a record is provided, then sysno is got from there
814 int buffer_extract_record (ZebraHandle zh,
815 const char *buf, size_t buf_size,
818 const char *recordType,
820 const char *match_criteria,
825 RecordAttr *recordAttr;
826 struct recExtractCtrl extractCtrl;
828 const char *matchStr = 0;
829 RecType recType = NULL;
832 long recordOffset = 0;
833 struct zebra_fetch_control fc;
834 const char *pr_fname = fname; /* filename to print .. */
837 pr_fname = "<no file>"; /* make it printable if file is omitted */
840 fc.record_int_buf = buf;
841 fc.record_int_len = buf_size;
842 fc.record_int_pos = 0;
844 fc.record_offset = 0;
846 extractCtrl.offset = 0;
847 extractCtrl.readf = zebra_record_int_read;
848 extractCtrl.seekf = zebra_record_int_seek;
849 extractCtrl.tellf = zebra_record_int_tell;
850 extractCtrl.endf = zebra_record_int_end;
851 extractCtrl.fh = &fc;
853 create_rec_keys_codec(&zh->reg->keys);
855 zh->reg->sortKeys.buf_used = 0;
857 if (zebraExplain_curDatabase (zh->reg->zei, zh->basenames[0]))
859 if (zebraExplain_newDatabase (zh->reg->zei, zh->basenames[0],
860 zh->m_explain_database))
864 if (recordType && *recordType) {
865 yaz_log (YLOG_DEBUG, "Record type explicitly specified: %s", recordType);
866 recType = recType_byName (zh->reg->recTypes, zh->res, recordType,
869 if (!(zh->m_record_type)) {
870 yaz_log (YLOG_WARN, "No such record type defined");
873 yaz_log (YLOG_DEBUG, "Get record type from rgroup: %s",zh->m_record_type);
874 recType = recType_byName (zh->reg->recTypes, zh->res,
875 zh->m_record_type, &clientData);
876 recordType = zh->m_record_type;
880 yaz_log (YLOG_WARN, "No such record type: %s", zh->m_record_type);
884 extractCtrl.init = extract_init;
885 extractCtrl.tokenAdd = extract_token_add;
886 extractCtrl.schemaAdd = extract_schema_add;
887 extractCtrl.dh = zh->reg->dh;
888 extractCtrl.handle = zh;
889 extractCtrl.zebra_maps = zh->reg->zebra_maps;
890 extractCtrl.flagShowRecords = 0;
891 extractCtrl.match_criteria[0] = '\0';
892 for (i = 0; i<256; i++)
894 if (zebra_maps_is_positioned(zh->reg->zebra_maps, i))
895 extractCtrl.seqno[i] = 1;
897 extractCtrl.seqno[i] = 0;
900 r = (*recType->extract)(clientData, &extractCtrl);
902 if (r == RECCTRL_EXTRACT_EOF)
904 else if (r == RECCTRL_EXTRACT_ERROR_GENERIC)
906 /* error occured during extraction ... */
907 yaz_log (YLOG_WARN, "extract error: generic");
910 else if (r == RECCTRL_EXTRACT_ERROR_NO_SUCH_FILTER)
912 /* error occured during extraction ... */
913 yaz_log (YLOG_WARN, "extract error: no such filter");
916 if (zh->reg->keys.buf_used == 0)
918 /* the extraction process returned no information - the record
919 is probably empty - unless flagShowRecords is in use */
922 yaz_log (YLOG_WARN, "No keys generated for record");
923 yaz_log (YLOG_WARN, " The file is probably empty");
929 if (extractCtrl.match_criteria[0])
930 match_criteria = extractCtrl.match_criteria;
934 if (match_criteria && *match_criteria) {
935 matchStr = match_criteria;
937 if (zh->m_record_id && *zh->m_record_id) {
938 matchStr = fileMatchStr (zh, &zh->reg->keys, pr_fname,
942 yaz_log (YLOG_WARN, "Bad match criteria (recordID)");
948 rinfo = dict_lookup (zh->reg->matchDict, matchStr);
951 assert(*rinfo == sizeof(*sysno));
952 memcpy (sysno, rinfo+1, sizeof(*sysno));
962 yaz_log (YLOG_LOG, "delete %s %s %ld", recordType,
963 pr_fname, (long) recordOffset);
964 yaz_log (YLOG_WARN, "cannot delete record above (seems new)");
967 yaz_log (YLOG_LOG, "add %s %s %ld", recordType, pr_fname,
968 (long) recordOffset);
969 rec = rec_new (zh->reg->records);
973 recordAttr = rec_init_attr (zh->reg->zei, rec);
977 dict_insert (zh->reg->matchDict, matchStr,
978 sizeof(*sysno), sysno);
980 extract_flushSortKeys (zh, *sysno, 1, &zh->reg->sortKeys);
981 extract_flushRecordKeys (zh, *sysno, 1, &zh->reg->keys);
983 zh->records_inserted++;
987 /* record already exists */
988 struct recKeys delkeys;
989 struct sortKeys sortKeys;
992 yaz_log (YLOG_LOG, "skipped %s %s %ld",
993 recordType, pr_fname, (long) recordOffset);
998 rec = rec_get (zh->reg->records, *sysno);
1001 recordAttr = rec_init_attr (zh->reg->zei, rec);
1003 if (!force_update) {
1004 if (recordAttr->runNumber ==
1005 zebraExplain_runNumberIncrement (zh->reg->zei, 0))
1007 yaz_log (YLOG_LOG, "skipped %s %s %ld", recordType,
1008 pr_fname, (long) recordOffset);
1009 extract_flushSortKeys (zh, *sysno, -1, &zh->reg->sortKeys);
1016 delkeys.buf_used = rec->size[recInfo_delKeys];
1017 delkeys.buf = rec->info[recInfo_delKeys];
1019 sortKeys.buf_used = rec->size[recInfo_sortKeys];
1020 sortKeys.buf = rec->info[recInfo_sortKeys];
1022 extract_flushSortKeys (zh, *sysno, 0, &sortKeys);
1023 extract_flushRecordKeys (zh, *sysno, 0, &delkeys);
1026 /* record going to be deleted */
1027 if (!delkeys.buf_used)
1029 yaz_log (YLOG_LOG, "delete %s %s %ld", recordType,
1030 pr_fname, (long) recordOffset);
1031 yaz_log (YLOG_WARN, "cannot delete file above, storeKeys false");
1035 yaz_log (YLOG_LOG, "delete %s %s %ld", recordType,
1036 pr_fname, (long) recordOffset);
1037 zh->records_deleted++;
1039 dict_delete (zh->reg->matchDict, matchStr);
1040 rec_del (zh->reg->records, &rec);
1048 /* record going to be updated */
1049 if (!delkeys.buf_used)
1051 yaz_log (YLOG_LOG, "update %s %s %ld", recordType,
1052 pr_fname, (long) recordOffset);
1053 yaz_log (YLOG_WARN, "cannot update file above, storeKeys false");
1057 yaz_log (YLOG_LOG, "update %s %s %ld", recordType,
1058 pr_fname, (long) recordOffset);
1059 extract_flushSortKeys (zh, *sysno, 1, &zh->reg->sortKeys);
1060 extract_flushRecordKeys (zh, *sysno, 1, &zh->reg->keys);
1061 zh->records_updated++;
1065 /* update file type */
1066 xfree (rec->info[recInfo_fileType]);
1067 rec->info[recInfo_fileType] =
1068 rec_strdup (recordType, &rec->size[recInfo_fileType]);
1070 /* update filename */
1071 xfree (rec->info[recInfo_filename]);
1072 rec->info[recInfo_filename] =
1073 rec_strdup (fname, &rec->size[recInfo_filename]);
1075 /* update delete keys */
1076 xfree (rec->info[recInfo_delKeys]);
1077 if (zh->reg->keys.buf_used > 0 && zh->m_store_keys == 1)
1079 rec->size[recInfo_delKeys] = zh->reg->keys.buf_used;
1080 rec->info[recInfo_delKeys] = zh->reg->keys.buf;
1081 zh->reg->keys.buf = NULL;
1082 zh->reg->keys.buf_max = 0;
1086 rec->info[recInfo_delKeys] = NULL;
1087 rec->size[recInfo_delKeys] = 0;
1090 /* update sort keys */
1091 xfree (rec->info[recInfo_sortKeys]);
1093 rec->size[recInfo_sortKeys] = zh->reg->sortKeys.buf_used;
1094 rec->info[recInfo_sortKeys] = zh->reg->sortKeys.buf;
1095 zh->reg->sortKeys.buf = NULL;
1096 zh->reg->sortKeys.buf_max = 0;
1098 /* save file size of original record */
1099 zebraExplain_recordBytesIncrement (zh->reg->zei,
1100 - recordAttr->recordSize);
1102 recordAttr->recordSize = fi->file_moffset - recordOffset;
1103 if (!recordAttr->recordSize)
1104 recordAttr->recordSize = fi->file_max - recordOffset;
1106 recordAttr->recordSize = buf_size;
1108 zebraExplain_recordBytesIncrement (zh->reg->zei,
1109 recordAttr->recordSize);
1111 /* set run-number for this record */
1112 recordAttr->runNumber =
1113 zebraExplain_runNumberIncrement (zh->reg->zei, 0);
1115 /* update store data */
1116 xfree (rec->info[recInfo_storeData]);
1117 if (zh->m_store_data)
1119 rec->size[recInfo_storeData] = recordAttr->recordSize;
1120 rec->info[recInfo_storeData] = (char *)
1121 xmalloc (recordAttr->recordSize);
1122 memcpy (rec->info[recInfo_storeData], buf, recordAttr->recordSize);
1126 rec->info[recInfo_storeData] = NULL;
1127 rec->size[recInfo_storeData] = 0;
1129 /* update database name */
1130 xfree (rec->info[recInfo_databaseName]);
1131 rec->info[recInfo_databaseName] =
1132 rec_strdup (zh->basenames[0], &rec->size[recInfo_databaseName]);
1135 recordAttr->recordOffset = recordOffset;
1137 /* commit this record */
1138 rec_put (zh->reg->records, &rec);
1143 int explain_extract (void *handle, Record rec, data1_node *n)
1145 ZebraHandle zh = (ZebraHandle) handle;
1146 struct recExtractCtrl extractCtrl;
1149 if (zebraExplain_curDatabase (zh->reg->zei,
1150 rec->info[recInfo_databaseName]))
1153 if (zebraExplain_newDatabase (zh->reg->zei,
1154 rec->info[recInfo_databaseName], 0))
1158 create_rec_keys_codec(&zh->reg->keys);
1160 zh->reg->sortKeys.buf_used = 0;
1162 extractCtrl.init = extract_init;
1163 extractCtrl.tokenAdd = extract_token_add;
1164 extractCtrl.schemaAdd = extract_schema_add;
1165 extractCtrl.dh = zh->reg->dh;
1166 for (i = 0; i<256; i++)
1167 extractCtrl.seqno[i] = 0;
1168 extractCtrl.zebra_maps = zh->reg->zebra_maps;
1169 extractCtrl.flagShowRecords = 0;
1170 extractCtrl.match_criteria[0] = '\0';
1171 extractCtrl.handle = handle;
1174 grs_extract_tree(&extractCtrl, n);
1176 if (rec->size[recInfo_delKeys])
1178 struct recKeys delkeys;
1179 struct sortKeys sortkeys;
1181 delkeys.buf_used = rec->size[recInfo_delKeys];
1182 delkeys.buf = rec->info[recInfo_delKeys];
1184 sortkeys.buf_used = rec->size[recInfo_sortKeys];
1185 sortkeys.buf = rec->info[recInfo_sortKeys];
1187 extract_flushSortKeys (zh, rec->sysno, 0, &sortkeys);
1188 extract_flushRecordKeys (zh, rec->sysno, 0, &delkeys);
1190 extract_flushRecordKeys (zh, rec->sysno, 1, &zh->reg->keys);
1191 extract_flushSortKeys (zh, rec->sysno, 1, &zh->reg->sortKeys);
1193 xfree (rec->info[recInfo_delKeys]);
1194 rec->size[recInfo_delKeys] = zh->reg->keys.buf_used;
1195 rec->info[recInfo_delKeys] = zh->reg->keys.buf;
1196 zh->reg->keys.buf = NULL;
1197 zh->reg->keys.buf_max = 0;
1199 xfree (rec->info[recInfo_sortKeys]);
1200 rec->size[recInfo_sortKeys] = zh->reg->sortKeys.buf_used;
1201 rec->info[recInfo_sortKeys] = zh->reg->sortKeys.buf;
1202 zh->reg->sortKeys.buf = NULL;
1203 zh->reg->sortKeys.buf_max = 0;
1208 void extract_flushRecordKeys (ZebraHandle zh, SYSNO sysno,
1209 int cmd, struct recKeys *reckeys)
1211 void *decode_handle = iscz1_start();
1214 ZebraExplainInfo zei = zh->reg->zei;
1216 if (!zh->reg->key_buf)
1218 int mem= 1024*1024* atoi( res_get_def( zh->res, "memmax", "8"));
1221 yaz_log(YLOG_WARN, "Invalid memory setting, using default 8 MB");
1224 /* FIXME: That "8" should be in a default settings include */
1225 /* not hard-coded here! -H */
1226 zh->reg->key_buf = (char**) xmalloc (mem);
1227 zh->reg->ptr_top = mem/sizeof(char*);
1229 zh->reg->key_buf_used = 0;
1230 zh->reg->key_file_no = 0;
1232 zebraExplain_recordCountIncrement (zei, cmd ? 1 : -1);
1234 while (off < reckeys->buf_used)
1236 const char *src = reckeys->buf + off;
1238 char *dst = (char*) &key;
1240 iscz1_decode(decode_handle, &dst, &src);
1241 assert(key.len == 4);
1243 if (zh->reg->key_buf_used + 1024 >
1244 (zh->reg->ptr_top -zh->reg->ptr_i)*sizeof(char*))
1245 extract_flushWriteKeys (zh,0);
1247 assert(zh->reg->ptr_i > 0);
1248 (zh->reg->key_buf)[zh->reg->ptr_top - zh->reg->ptr_i] =
1249 (char*)zh->reg->key_buf + zh->reg->key_buf_used;
1251 ch = key.mem[0]; /* ordinal for field/use/attribute */
1253 zh->reg->key_buf_used +=
1254 key_SU_encode (ch,((char*)zh->reg->key_buf) +
1255 zh->reg->key_buf_used);
1257 ((char*)zh->reg->key_buf) [(zh->reg->key_buf_used)++] = *src++;
1259 ((char*)(zh->reg->key_buf))[(zh->reg->key_buf_used)++] = '\0';
1260 ((char*)(zh->reg->key_buf))[(zh->reg->key_buf_used)++] = cmd;
1263 if (key.mem[1]) /* filter specified record ID */
1264 key.mem[0] = key.mem[1];
1267 key.mem[1] = key.mem[2]; /* section_id */
1268 key.mem[2] = key.mem[3]; /* sequence .. */
1270 memcpy ((char*)zh->reg->key_buf + zh->reg->key_buf_used,
1272 (zh->reg->key_buf_used) += sizeof(key);
1273 off = src - reckeys->buf;
1275 assert (off == reckeys->buf_used);
1276 iscz1_stop(decode_handle);
1279 void extract_flushWriteKeys (ZebraHandle zh, int final)
1280 /* optimizing: if final=1, and no files written yet */
1281 /* push the keys directly to merge, sidestepping the */
1282 /* temp file altogether. Speeds small updates */
1285 char out_fname[200];
1287 struct encode_info encode_info;
1288 int ptr_i = zh->reg->ptr_i;
1293 if (!zh->reg->key_buf || ptr_i <= 0)
1295 yaz_log (YLOG_DEBUG, " nothing to flush section=%d buf=%p i=%d",
1296 zh->reg->key_file_no, zh->reg->key_buf, ptr_i);
1297 yaz_log (YLOG_DEBUG, " buf=%p ",
1299 yaz_log (YLOG_DEBUG, " ptr=%d ",zh->reg->ptr_i);
1300 yaz_log (YLOG_DEBUG, " reg=%p ",zh->reg);
1305 (zh->reg->key_file_no)++;
1306 yaz_log (YLOG_LOG, "sorting section %d", (zh->reg->key_file_no));
1307 yaz_log (YLOG_DEBUG, " sort_buff at %p n=%d",
1308 zh->reg->key_buf + zh->reg->ptr_top - ptr_i,ptr_i);
1310 qsort (zh->reg->key_buf + zh->reg->ptr_top - ptr_i, ptr_i,
1311 sizeof(char*), key_qsort_compare);
1313 /* zebra.cfg: tempfiles:
1314 Y: always use temp files (old way)
1315 A: use temp files, if more than one (auto)
1316 = if this is both the last and the first
1317 N: never bother with temp files (new) */
1319 temp_policy=toupper(res_get_def(zh->res,"tempfiles","auto")[0]);
1320 if (temp_policy != 'Y' && temp_policy != 'N' && temp_policy != 'A') {
1321 yaz_log (YLOG_WARN, "Illegal tempfiles setting '%c'. using 'Auto' ",
1326 if ( ( temp_policy =='N' ) || /* always from memory */
1327 ( ( temp_policy =='A' ) && /* automatic */
1328 (zh->reg->key_file_no == 1) && /* this is first time */
1329 (final) ) ) /* and last (=only) time */
1330 { /* go directly from memory */
1331 zh->reg->key_file_no =0; /* signal not to read files */
1332 zebra_index_merge(zh);
1334 zh->reg->key_buf_used = 0;
1338 /* Not doing directly from memory, write into a temp file */
1339 extract_get_fname_tmp (zh, out_fname, zh->reg->key_file_no);
1341 if (!(outf = fopen (out_fname, "wb")))
1343 yaz_log (YLOG_FATAL|YLOG_ERRNO, "fopen %s", out_fname);
1346 yaz_log (YLOG_LOG, "writing section %d", zh->reg->key_file_no);
1347 prevcp = cp = (zh->reg->key_buf)[zh->reg->ptr_top - ptr_i];
1349 encode_key_init (&encode_info);
1350 encode_key_write (cp, &encode_info, outf);
1354 cp = (zh->reg->key_buf)[zh->reg->ptr_top - ptr_i];
1355 if (strcmp (cp, prevcp))
1357 encode_key_flush ( &encode_info, outf);
1358 encode_key_init (&encode_info);
1359 encode_key_write (cp, &encode_info, outf);
1363 encode_key_write (cp + strlen(cp), &encode_info, outf);
1365 encode_key_flush ( &encode_info, outf);
1367 qsort (key_buf + ptr_top-ptr_i, ptr_i, sizeof(char*), key_x_compare);
1368 extract_get_fname_tmp (out_fname, key_file_no);
1370 if (!(outf = fopen (out_fname, "wb")))
1372 yaz_log (YLOG_FATAL|YLOG_ERRNO, "fopen %s", out_fname);
1375 yaz_log (YLOG_LOG, "writing section %d", key_file_no);
1377 prevcp = key_buf[ptr_top-i];
1379 if (!--i || strcmp (prevcp, key_buf[ptr_top-i]))
1381 key_y_len = strlen(prevcp)+1;
1383 yaz_log (YLOG_LOG, "key_y_len: %2d %02x %02x %s",
1384 key_y_len, prevcp[0], prevcp[1], 2+prevcp);
1386 qsort (key_buf + ptr_top-ptr_i, ptr_i - i,
1387 sizeof(char*), key_y_compare);
1388 cp = key_buf[ptr_top-ptr_i];
1390 encode_key_init (&encode_info);
1391 encode_key_write (cp, &encode_info, outf);
1394 cp = key_buf[ptr_top-ptr_i];
1395 encode_key_write (cp+key_y_len, &encode_info, outf);
1397 encode_key_flush ( &encode_info, outf);
1400 prevcp = key_buf[ptr_top-ptr_i];
1405 yaz_log (YLOG_FATAL|YLOG_ERRNO, "fclose %s", out_fname);
1408 yaz_log (YLOG_LOG, "finished section %d", zh->reg->key_file_no);
1410 zh->reg->key_buf_used = 0;
1413 void extract_add_it_key (ZebraHandle zh,
1415 const char *str, int slen, struct it_key *key)
1418 struct recKeys *keys = &zh->reg->keys;
1419 const char *src = (char*) key;
1421 if (keys->buf_used+1024 > keys->buf_max)
1423 char *b = (char *) xmalloc (keys->buf_max += 128000);
1424 if (keys->buf_used > 0)
1425 memcpy (b, keys->buf, keys->buf_used);
1429 dst = keys->buf + keys->buf_used;
1431 iscz1_encode(keys->codec_handle, &dst, &src);
1434 memcpy (dst, str, slen);
1437 keys->buf_used = dst - keys->buf;
1440 void extract_add_index_string (RecWord *p, const char *str, int length)
1444 ZebraHandle zh = p->extractCtrl->handle;
1445 ZebraExplainInfo zei = zh->reg->zei;
1450 ch = zebraExplain_lookup_attr_str(zei, p->attrStr);
1452 ch = zebraExplain_add_attr_str(zei, p->attrStr);
1456 ch = zebraExplain_lookup_attr_su(zei, p->attrSet, p->attrUse);
1458 ch = zebraExplain_add_attr_su(zei, p->attrSet, p->attrUse);
1462 key.mem[1] = p->record_id;
1463 key.mem[2] = p->section_id;
1464 key.mem[3] = p->seqno;
1467 /* just for debugging .. */
1468 yaz_log(YLOG_LOG, "add: set=%d use=%d "
1469 "record_id=%lld section_id=%lld seqno=%lld",
1470 p->attrSet, p->attrUse, p->record_id, p->section_id, p->seqno);
1473 extract_add_it_key(p->extractCtrl->handle, p->reg_type, str,
1477 static void extract_add_sort_string (RecWord *p, const char *str,
1480 ZebraHandle zh = p->extractCtrl->handle;
1481 struct sortKeys *sk = &zh->reg->sortKeys;
1484 while (off < sk->buf_used)
1488 off += key_SU_decode(&set, sk->buf + off);
1489 off += key_SU_decode(&use, sk->buf + off);
1490 off += key_SU_decode(&slen, sk->buf + off);
1492 if (p->attrSet == set && p->attrUse == use)
1495 assert (off == sk->buf_used);
1497 if (sk->buf_used + IT_MAX_WORD > sk->buf_max)
1501 b = (char *) xmalloc (sk->buf_max += 128000);
1502 if (sk->buf_used > 0)
1503 memcpy (b, sk->buf, sk->buf_used);
1507 off += key_SU_encode(p->attrSet, sk->buf + off);
1508 off += key_SU_encode(p->attrUse, sk->buf + off);
1509 off += key_SU_encode(length, sk->buf + off);
1510 memcpy (sk->buf + off, str, length);
1511 sk->buf_used = off + length;
1514 void extract_add_string (RecWord *p, const char *string, int length)
1516 assert (length > 0);
1517 if (zebra_maps_is_sort (p->zebra_maps, p->reg_type))
1518 extract_add_sort_string (p, string, length);
1520 extract_add_index_string (p, string, length);
1523 static void extract_add_incomplete_field (RecWord *p)
1525 const char *b = p->term_buf;
1526 int remain = p->term_len;
1527 const char **map = 0;
1529 yaz_log(YLOG_DEBUG, "Incomplete field, w='%.*s'", p->term_len, p->term_buf);
1532 map = zebra_maps_input(p->zebra_maps, p->reg_type, &b, remain, 0);
1536 char buf[IT_MAX_WORD+1];
1540 while (map && *map && **map == *CHR_SPACE)
1542 remain = p->term_len - (b - p->term_buf);
1544 map = zebra_maps_input(p->zebra_maps, p->reg_type, &b, remain, 0);
1551 while (map && *map && **map != *CHR_SPACE)
1553 const char *cp = *map;
1555 while (i < IT_MAX_WORD && *cp)
1557 remain = p->term_len - (b - p->term_buf);
1559 map = zebra_maps_input(p->zebra_maps, p->reg_type, &b, remain, 0);
1565 extract_add_string (p, buf, i);
1570 static void extract_add_complete_field (RecWord *p)
1572 const char *b = p->term_buf;
1573 char buf[IT_MAX_WORD+1];
1574 const char **map = 0;
1575 int i = 0, remain = p->term_len;
1577 yaz_log(YLOG_DEBUG, "Complete field, w='%.*s'",
1578 p->term_len, p->term_buf);
1581 map = zebra_maps_input (p->zebra_maps, p->reg_type, &b, remain, 1);
1583 while (remain > 0 && i < IT_MAX_WORD)
1585 while (map && *map && **map == *CHR_SPACE)
1587 remain = p->term_len - (b - p->term_buf);
1591 int first = i ? 0 : 1; /* first position */
1592 map = zebra_maps_input(p->zebra_maps, p->reg_type, &b, remain, first);
1600 if (i && i < IT_MAX_WORD)
1601 buf[i++] = *CHR_SPACE;
1602 while (map && *map && **map != *CHR_SPACE)
1604 const char *cp = *map;
1606 if (**map == *CHR_CUT)
1612 if (i >= IT_MAX_WORD)
1614 yaz_log(YLOG_DEBUG, "Adding string to index '%d'", **map);
1615 while (i < IT_MAX_WORD && *cp)
1618 remain = p->term_len - (b - p->term_buf);
1621 map = zebra_maps_input (p->zebra_maps, p->reg_type, &b,
1630 extract_add_string (p, buf, i);
1633 void extract_token_add (RecWord *p)
1637 yaz_log (YLOG_LOG, "token_add "
1638 "reg_type=%c attrSet=%d attrUse=%d seqno=%d s=%.*s",
1639 p->reg_type, p->attrSet, p->attrUse, p->seqno, p->length,
1642 if ((wrbuf = zebra_replace(p->zebra_maps, p->reg_type, 0,
1643 p->term_buf, p->term_len)))
1645 p->term_buf = wrbuf_buf(wrbuf);
1646 p->term_len = wrbuf_len(wrbuf);
1648 if (zebra_maps_is_complete (p->zebra_maps, p->reg_type))
1649 extract_add_complete_field (p);
1651 extract_add_incomplete_field(p);
1654 void extract_schema_add (struct recExtractCtrl *p, Odr_oid *oid)
1656 ZebraHandle zh = (ZebraHandle) (p->handle);
1657 zebraExplain_addSchema (zh->reg->zei, oid);
1660 void extract_flushSortKeys (ZebraHandle zh, SYSNO sysno,
1661 int cmd, struct sortKeys *sk)
1663 SortIdx sortIdx = zh->reg->sortIdx;
1666 sortIdx_sysno (sortIdx, sysno);
1668 while (off < sk->buf_used)
1672 off += key_SU_decode(&set, sk->buf + off);
1673 off += key_SU_decode(&use, sk->buf + off);
1674 off += key_SU_decode(&slen, sk->buf + off);
1676 sortIdx_type(sortIdx, use);
1678 sortIdx_add(sortIdx, sk->buf + off, slen);
1680 sortIdx_add(sortIdx, "", 1);
1685 void encode_key_init (struct encode_info *i)
1694 i->encode_handle = iscz1_start();
1700 /* this is the old encode_key_write
1701 * may be deleted once we are confident that the new works
1704 void encode_key_write (char *k, struct encode_info *i, FILE *outf)
1707 char *bp = i->buf, *bp0;
1708 const char *src = (char *) &key;
1710 /* copy term to output buf */
1711 while ((*bp++ = *k++))
1713 /* and copy & align key so we can mangle */
1714 memcpy (&key, k+1, sizeof(struct it_key)); /* *k is insert/delete */
1717 iscz1_encode(i->encode_handle, &bp, &src);
1718 *bp0 = (*k * 128) + bp - bp0 - 1; /* length and insert/delete combined */
1719 if (fwrite (i->buf, bp - i->buf, 1, outf) != 1)
1721 yaz_log (YLOG_FATAL|YLOG_ERRNO, "fwrite");
1726 void encode_key_flush (struct encode_info *i, FILE *outf)
1727 { /* dummy routine */
1728 iscz1_stop(i->encode_handle);
1733 /* new encode_key_write
1734 * The idea is to buffer one more key, and compare them
1735 * If we are going to delete and insert the same key,
1736 * we may as well not bother. Should make a difference in
1737 * updates with small modifications (appending to a mbox)
1739 void encode_key_write (char *k, struct encode_info *i, FILE *outf)
1744 if (*k) /* first time for new key */
1747 while ((*bp++ = *k++))
1749 i->keylen= bp - i->buf -1;
1750 assert(i->keylen+1+sizeof(struct it_key) < ENCODE_BUFLEN);
1754 bp=i->buf + i->keylen;
1759 memcpy (&key, k+1, sizeof(struct it_key));
1760 if (0==i->prevsys) /* no previous filter, fill up */
1762 i->prevsys=key.sysno;
1763 i->prevseq=key.seqno;
1766 else if ( (i->prevsys==key.sysno) &&
1767 (i->prevseq==key.seqno) &&
1769 { /* same numbers, diff cmd, they cancel out */
1773 { /* different stuff, write previous, move buf */
1774 bp = encode_key_int ( (i->prevsys - i->sysno) * 2 + i->prevcmd, bp);
1775 if (i->sysno != i->prevsys)
1777 i->sysno = i->prevsys;
1780 else if (!i->seqno && !i->prevseq && i->cmd == i->prevcmd)
1782 return; /* ??? Filters some sort of duplicates away */
1783 /* ??? Can this ever happen -H 15oct02 */
1785 bp = encode_key_int (i->prevseq - i->seqno, bp);
1786 i->seqno = i->prevseq;
1787 i->cmd = i->prevcmd;
1788 if (fwrite (i->buf, bp - i->buf, 1, outf) != 1)
1790 yaz_log (YLOG_FATAL|YLOG_ERRNO, "fwrite");
1793 i->keylen=0; /* ok, it's written, forget it */
1794 i->prevsys=key.sysno;
1795 i->prevseq=key.seqno;
1800 void encode_key_flush (struct encode_info *i, FILE *outf)
1801 { /* flush the last key from i */
1802 char *bp =i->buf + i->keylen;
1805 return; /* nothing to flush */
1808 bp = encode_key_int ( (i->prevsys - i->sysno) * 2 + i->prevcmd, bp);
1809 if (i->sysno != i->prevsys)
1811 i->sysno = i->prevsys;
1814 else if (!i->seqno && !i->prevseq && i->cmd == i->prevcmd)
1816 return; /* ??? Filters some sort of duplicates away */
1817 /* ??? Can this ever happen -H 15oct02 */
1819 bp = encode_key_int (i->prevseq - i->seqno, bp);
1820 i->seqno = i->prevseq;
1821 i->cmd = i->prevcmd;
1822 if (fwrite (i->buf, bp - i->buf, 1, outf) != 1)
1824 yaz_log (YLOG_FATAL|YLOG_ERRNO, "fwrite");
1827 i->keylen=0; /* ok, it's written, forget it */
1828 i->prevsys=0; /* forget the values too */