-/* $Id: isams.c,v 1.3 2002-08-02 19:26:56 adam Exp $
- Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002
- Index Data Aps
-
-This file is part of the Zebra server.
+/* This file is part of the Zebra server.
+ Copyright (C) Index Data
Zebra is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
for more details.
You should have received a copy of the GNU General Public License
-along with Zebra; see the file LICENSE.zebra. If not, write to the
-Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA.
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
*/
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
#include <stdlib.h>
#include <assert.h>
#include <string.h>
#include <stdio.h>
#include <yaz/log.h>
-#include <isams.h>
+#include <yaz/xmalloc.h>
+#include <idzebra/isams.h>
typedef struct {
int last_offset;
typedef unsigned ISAMS_BLOCK_SIZE;
struct ISAMS_s {
- ISAMS_M method;
+ ISAMS_M *method;
ISAMS_head head;
ISAMS_head head_old;
char *merge_buf;
int block_size;
int debug;
BFile bf;
-};
+};
struct ISAMS_PP_s {
ISAMS is;
int numRead;
};
-void isams_getmethod (ISAMS_M m)
+void isams_getmethod (ISAMS_M *m)
{
- m->code_start = NULL;
- m->code_item = NULL;
- m->code_stop = NULL;
+ m->codec.start = NULL;
+ m->codec.decode = NULL;
+ m->codec.encode = NULL;
+ m->codec.stop = NULL;
+ m->codec.reset = NULL;
m->compare_item = NULL;
+ m->log_item = NULL;
m->debug = 1;
m->block_size = 128;
}
ISAMS isams_open (BFiles bfs, const char *name, int writeflag,
- ISAMS_M method)
+ ISAMS_M *method)
{
ISAMS is = (ISAMS) xmalloc (sizeof(*is));
- is->method = (ISAMS_M) xmalloc (sizeof(*is->method));
+ is->method = (ISAMS_M *) xmalloc (sizeof(*is->method));
memcpy (is->method, method, sizeof(*method));
is->block_size = is->method->block_size;
is->debug = is->method->debug;
return 0;
}
-ISAMS_P isams_merge (ISAMS is, ISAMS_I data)
+ISAM_P isams_merge (ISAMS is, ISAMS_I data)
{
- char i_item[128], *i_item_ptr;
+ char i_item[128];
int i_more, i_mode;
void *r_clientData;
int first_block = is->head.last_block;
int first_offset = is->head.last_offset;
int count = 0;
- r_clientData = (*is->method->code_start)(ISAMC_ENCODE);
+ r_clientData = (*is->method->codec.start)();
is->head.last_offset += sizeof(int);
if (is->head.last_offset > is->block_size)
{
if (is->debug > 2)
- logf (LOG_LOG, "first_block=%d", first_block);
+ yaz_log (YLOG_LOG, "first_block=%d", first_block);
bf_write(is->bf, is->head.last_block, 0, 0, is->merge_buf);
(is->head.last_block)++;
is->head.last_offset -= is->block_size;
}
while (1)
{
- i_item_ptr = i_item;
- i_more = (*data->read_item)(data->clientData, &i_item_ptr, &i_mode);
+ char *tmp_ptr = i_item;
+ i_more = (*data->read_item)(data->clientData, &tmp_ptr, &i_mode);
assert (i_mode);
-
+
if (!i_more)
break;
else
{
char *r_out_ptr = is->merge_buf + is->head.last_offset;
-
- i_item_ptr = i_item;
- (*is->method->code_item)(ISAMC_ENCODE, r_clientData,
- &r_out_ptr, &i_item_ptr);
+
+ const char *i_item_ptr = i_item;
+ (*is->method->codec.encode)(r_clientData, &r_out_ptr, &i_item_ptr);
is->head.last_offset = r_out_ptr - is->merge_buf;
if (is->head.last_offset > is->block_size)
{
count++;
}
}
- (*is->method->code_stop)(ISAMC_ENCODE, r_clientData);
+ (*is->method->codec.stop)(r_clientData);
if (first_block == is->head.last_block)
memcpy(is->merge_buf + first_offset, &count, sizeof(int));
else if (first_block == is->head.last_block-1)
return first_block * is->block_size + first_offset;
}
-ISAMS_PP isams_pp_open (ISAMS is, ISAMS_P pos)
+ISAMS_PP isams_pp_open (ISAMS is, ISAM_P pos)
{
ISAMS_PP pp = (ISAMS_PP) xmalloc (sizeof(*pp));
if (is->debug > 1)
- logf (LOG_LOG, "isams: isams_pp_open pos=%ld", (long) pos);
+ yaz_log (YLOG_LOG, "isams: isams_pp_open pos=%ld", (long) pos);
pp->is = is;
- pp->decodeClientData = (*is->method->code_start)(ISAMC_DECODE);
+ pp->decodeClientData = (*is->method->codec.start)();
pp->numKeys = 0;
pp->numRead = 0;
pp->buf = (char *) xmalloc(is->block_size*2);
- pp->block_no = pos/is->block_size;
- pp->block_offset = pos - pp->block_no * is->block_size;
+ pp->block_no = (int) (pos/is->block_size);
+ pp->block_offset = (int) (pos - pp->block_no * is->block_size);
if (is->debug)
- logf (LOG_LOG, "isams: isams_pp_open off=%d no=%d",
+ yaz_log (YLOG_LOG, "isams: isams_pp_open off=%d no=%d",
pp->block_offset, pp->block_no);
if (pos)
{
bf_read (is->bf, pp->block_no+1, 0, 0, pp->buf + is->block_size);
memcpy(&pp->numKeys, pp->buf + pp->block_offset, sizeof(int));
if (is->debug)
- logf (LOG_LOG, "isams: isams_pp_open numKeys=%d", pp->numKeys);
+ yaz_log (YLOG_LOG, "isams: isams_pp_open numKeys=%d", pp->numKeys);
pp->block_offset += sizeof(int);
}
return pp;
void isams_pp_close (ISAMS_PP pp)
{
- (*pp->is->method->code_stop)(ISAMC_DECODE, pp->decodeClientData);
+ (*pp->is->method->codec.stop)(pp->decodeClientData);
xfree(pp->buf);
xfree(pp);
}
int isams_pp_read (ISAMS_PP pp, void *buf)
{
- return isams_read_item (pp, (char **) &buf);
+ char *cp = buf;
+ return isams_read_item (pp, &cp);
}
int isams_read_item (ISAMS_PP pp, char **dst)
{
- char *src;
+ const char *src;
if (pp->numRead >= pp->numKeys)
return 0;
(pp->numRead)++;
pp->buf + pp->is->block_size);
}
src = pp->buf + pp->block_offset;
- (*pp->is->method->code_item)(ISAMC_DECODE, pp->decodeClientData,
- dst, &src);
- pp->block_offset = src - pp->buf;
+ (*pp->is->method->codec.decode)(pp->decodeClientData, dst, &src);
+ pp->block_offset = src - pp->buf;
return 1;
}
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * c-file-style: "Stroustrup"
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
+