+static ZEBRA_RES rec_cache_insert(Records p, Record rec, enum recordCacheFlag flag)
+{
+ struct record_cache_entry *e;
+ ZEBRA_RES ret = ZEBRA_OK;
+
+ if (p->cache_cur == p->cache_max)
+ ret = rec_cache_flush(p, 1);
+ else if (p->cache_cur > 0)
+ {
+ int i, j;
+ int used = 0;
+ for (i = 0; i<p->cache_cur; i++)
+ {
+ Record r = (p->record_cache + i)->rec;
+ for (j = 0; j<REC_NO_INFO; j++)
+ used += r->size[j];
+ }
+ if (used > 90000)
+ ret = rec_cache_flush(p, 1);
+ }
+ assert(p->cache_cur < p->cache_max);
+
+ e = p->record_cache + (p->cache_cur)++;
+ e->flag = flag;
+ e->rec = rec_cp(rec);
+ return ret;
+}
+
+ZEBRA_RES rec_close(Records *pp)
+{
+ Records p = *pp;
+ int i;
+ ZEBRA_RES ret = ZEBRA_OK;
+
+ if (!p)
+ return ret;
+
+ zebra_mutex_destroy(&p->mutex);
+ if (rec_cache_flush(p, 0) != ZEBRA_OK)
+ ret = ZEBRA_FAIL;
+
+ xfree(p->record_cache);
+
+ if (p->rw)
+ {
+ if (rec_write_head(p) != ZEBRA_OK)
+ ret = ZEBRA_FAIL;
+ }
+
+ if (p->index_BFile)
+ bf_close(p->index_BFile);
+
+ for (i = 0; i<REC_BLOCK_TYPES; i++)
+ {
+ if (p->data_BFile[i])
+ bf_close(p->data_BFile[i]);
+ xfree(p->data_fname[i]);
+ }
+ xfree(p->tmp_buf);
+ xfree(p);
+ *pp = NULL;
+ return ret;
+}
+
+static Record rec_get_int(Records p, zint sysno)
+{
+ int i, in_size, r;
+ Record rec, *recp;
+ struct record_index_entry entry;
+ zint freeblock;
+ int dst_type;
+ char *nptr, *cptr;
+ char *in_buf = 0;
+ char *bz_buf = 0;
+#if HAVE_BZLIB_H
+ unsigned int bz_size;
+#endif
+ char compression_method;
+
+ assert(sysno > 0);
+ assert(p);
+
+ if ((recp = rec_cache_lookup(p, sysno, recordFlagNop)))
+ return rec_cp(*recp);
+
+ if (read_indx(p, rec_sysno_to_int(sysno), &entry, sizeof(entry), 1) < 1)
+ return NULL; /* record is not there! */
+
+ if (!entry.size)
+ return NULL; /* record is deleted */
+
+ dst_type = (int) (entry.next & 7);
+ assert(dst_type < REC_BLOCK_TYPES);
+ freeblock = entry.next / 8;
+
+ assert(freeblock > 0);
+
+ rec_tmp_expand(p, entry.size);
+
+ cptr = p->tmp_buf;
+ r = bf_read(p->data_BFile[dst_type], freeblock, 0, 0, cptr);
+ if (r < 0)
+ return 0;
+ memcpy(&freeblock, cptr, sizeof(freeblock));
+
+ while (freeblock)
+ {
+ zint tmp;
+
+ cptr += p->head.block_size[dst_type] - sizeof(freeblock);
+
+ memcpy(&tmp, cptr, sizeof(tmp));
+ r = bf_read(p->data_BFile[dst_type], freeblock, 0, 0, cptr);
+ if (r < 0)
+ return 0;
+ memcpy(&freeblock, cptr, sizeof(freeblock));
+ memcpy(cptr, &tmp, sizeof(tmp));
+ }
+
+ rec = (Record) xmalloc(sizeof(*rec));
+ rec->sysno = sysno;
+ memcpy(&compression_method, p->tmp_buf + sizeof(zint) + sizeof(short),
+ sizeof(compression_method));
+ in_buf = p->tmp_buf + sizeof(zint) + sizeof(short) + sizeof(char);
+ in_size = entry.size - sizeof(short) - sizeof(char);
+ switch (compression_method)
+ {
+ case REC_COMPRESS_BZIP2:
+#if HAVE_BZLIB_H
+ bz_size = entry.size * 20 + 100;
+ while (1)
+ {
+ bz_buf = (char *) xmalloc(bz_size);
+#ifdef BZ_CONFIG_ERROR
+ i = BZ2_bzBuffToBuffDecompress
+#else
+ i = bzBuffToBuffDecompress
+#endif
+ (bz_buf, &bz_size, in_buf, in_size, 0, 0);
+ yaz_log(YLOG_LOG, "decompress %5d %5d", in_size, bz_size);
+ if (i == BZ_OK)
+ break;
+ yaz_log(YLOG_LOG, "failed");
+ xfree(bz_buf);
+ bz_size *= 2;
+ }
+ in_buf = bz_buf;
+ in_size = bz_size;
+#else
+ yaz_log(YLOG_FATAL, "cannot decompress record(s) in BZIP2 format");
+ return 0;
+#endif
+ break;
+ case REC_COMPRESS_NONE:
+ break;
+ }
+ for (i = 0; i<REC_NO_INFO; i++)
+ rec->info[i] = 0;
+
+ nptr = in_buf; /* skip ref count */
+ while (nptr < in_buf + in_size)
+ {
+ zint this_sysno;
+ int len;
+ rec_decode_zint(&this_sysno, (unsigned char *) nptr, &len);
+ nptr += len;
+
+ for (i = 0; i < REC_NO_INFO; i++)
+ {
+ unsigned int this_size;
+ rec_decode_unsigned(&this_size, (unsigned char *) nptr, &len);
+ nptr += len;
+
+ if (this_size == 0)
+ continue;
+ rec->size[i] = this_size-1;
+
+ if (rec->size[i])
+ {
+ rec->info[i] = nptr;
+ nptr += rec->size[i];
+ }
+ else
+ rec->info[i] = NULL;
+ }
+ if (this_sysno == rec_sysno_to_int(sysno))
+ break;
+ }
+ for (i = 0; i<REC_NO_INFO; i++)
+ {
+ if (rec->info[i] && rec->size[i])
+ {
+ char *np = xmalloc(rec->size[i]+1);
+ memcpy(np, rec->info[i], rec->size[i]);
+ np[rec->size[i]] = '\0';
+ rec->info[i] = np;
+ }
+ else
+ {
+ assert(rec->info[i] == 0);
+ assert(rec->size[i] == 0);
+ }
+ }
+ xfree(bz_buf);
+ if (rec_cache_insert(p, rec, recordFlagNop) != ZEBRA_OK)
+ return 0;
+ return rec;
+}
+
+Record rec_get(Records p, zint sysno)
+{
+ Record rec;
+ zebra_mutex_lock(&p->mutex);
+
+ rec = rec_get_int(p, sysno);
+ zebra_mutex_unlock(&p->mutex);
+ return rec;
+}
+
+Record rec_get_root(Records p)
+{
+ return rec_get(p, rec_sysno_to_ext(1));
+}
+
+static Record rec_new_int(Records p)
+{
+ int i;
+ zint sysno;
+ Record rec;
+
+ assert(p);
+ rec = (Record) xmalloc(sizeof(*rec));
+ if (1 || p->head.index_free == 0)
+ sysno = (p->head.index_last)++;
+ else
+ {
+ struct record_index_entry entry;
+
+ if (read_indx(p, p->head.index_free, &entry, sizeof(entry), 0) < 1)
+ {
+ xfree(rec);
+ return 0;
+ }
+ sysno = p->head.index_free;
+ p->head.index_free = entry.next;
+ }
+ (p->head.no_records)++;
+ rec->sysno = rec_sysno_to_ext(sysno);
+ for (i = 0; i < REC_NO_INFO; i++)
+ {
+ rec->info[i] = NULL;
+ rec->size[i] = 0;
+ }
+ rec_cache_insert(p, rec, recordFlagNew);
+ return rec;
+}
+
+Record rec_new(Records p)
+{
+ Record rec;
+ zebra_mutex_lock(&p->mutex);
+
+ rec = rec_new_int(p);
+ zebra_mutex_unlock(&p->mutex);
+ return rec;
+}
+
+ZEBRA_RES rec_del(Records p, Record *recpp)
+{
+ Record *recp;
+ ZEBRA_RES ret = ZEBRA_OK;
+
+ zebra_mutex_lock(&p->mutex);
+ (p->head.no_records)--;
+ if ((recp = rec_cache_lookup(p, (*recpp)->sysno, recordFlagDelete)))
+ {
+ rec_free(recp);
+ *recp = *recpp;
+ }
+ else
+ {
+ ret = rec_cache_insert(p, *recpp, recordFlagDelete);
+ rec_free(recpp);
+ }
+ zebra_mutex_unlock(&p->mutex);
+ *recpp = NULL;
+ return ret;
+}
+
+ZEBRA_RES rec_put(Records p, Record *recpp)
+{
+ Record *recp;
+ ZEBRA_RES ret = ZEBRA_OK;
+
+ zebra_mutex_lock(&p->mutex);
+ if ((recp = rec_cache_lookup(p, (*recpp)->sysno, recordFlagWrite)))
+ {
+ rec_free(recp);
+ *recp = *recpp;
+ }
+ else
+ {
+ ret = rec_cache_insert(p, *recpp, recordFlagWrite);
+ rec_free(recpp);
+ }
+ zebra_mutex_unlock(&p->mutex);
+ *recpp = NULL;
+ return ret;
+}
+
+void rec_free(Record *recpp)
+{
+ int i;
+
+ if (!*recpp)
+ return ;
+ for (i = 0; i < REC_NO_INFO; i++)
+ xfree((*recpp)->info[i]);
+ xfree(*recpp);
+ *recpp = NULL;
+}
+
+Record rec_cp(Record rec)
+{
+ Record n;
+ int i;
+
+ n = (Record) xmalloc(sizeof(*n));
+ n->sysno = rec->sysno;
+ for (i = 0; i < REC_NO_INFO; i++)
+ if (!rec->info[i])
+ {
+ n->info[i] = NULL;
+ n->size[i] = 0;
+ }
+ else
+ {
+ n->size[i] = rec->size[i];
+ n->info[i] = (char *) xmalloc(rec->size[i]+1);
+ memcpy(n->info[i], rec->info[i], rec->size[i]);
+ n->info[i][rec->size[i]] = '\0';
+ }
+ return n;
+}
+
+
+char *rec_strdup(const char *s, size_t *len)