X-Git-Url: http://git.indexdata.com/?p=idzebra-moved-to-github.git;a=blobdiff_plain;f=isams%2Fisams.c;h=08adf9ae3268821b46d4e564653238650d432c34;hp=81d47e4468199ec473fb0c3075b91ab457b303fa;hb=89d16cf15eda0e4802d18b8ad09bd3653508ebfc;hpb=45dcbe04562559c1af90b5049fa1871311907072

diff --git a/isams/isams.c b/isams/isams.c
index 81d47e4..08adf9a 100644
--- a/isams/isams.c
+++ b/isams/isams.c
@@ -1,36 +1,31 @@
-/*
- * Copyright (c) 1995-1999, Index Data.
- * See the file LICENSE for details.
- * Sebastian Hammer, Adam Dickmeiss
- *
- * $Log: isams.c,v $
- * Revision 1.1  1999-11-30 14:02:45  adam
- * Moved isams.
- *
- * Revision 1.5  1999/07/14 10:59:27  adam
- * Changed functions isc_getmethod, isams_getmethod.
- * Improved fatal error handling (such as missing EXPLAIN schema).
- *
- * Revision 1.4  1999/05/26 07:49:14  adam
- * C++ compilation.
- *
- * Revision 1.3  1999/05/20 12:57:18  adam
- * Implemented TCL filter. Updated recctrl system.
- *
- * Revision 1.2  1999/05/15 14:35:48  adam
- * Minor changes.
- *
- * Revision 1.1  1999/05/12 13:08:06  adam
- * First version of ISAMS.
- *
- */
+/* This file is part of the Zebra server.
+   Copyright (C) 1994-2009 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
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+*/
+
+
 #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;
@@ -40,7 +35,7 @@ typedef struct {
 typedef unsigned ISAMS_BLOCK_SIZE;
 
 struct ISAMS_s {
-    ISAMS_M method;
+    ISAMS_M *method;
     ISAMS_head head;
     ISAMS_head head_old;
     char *merge_buf;
@@ -60,24 +55,27 @@ struct ISAMS_PP_s {
     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;
@@ -111,22 +109,22 @@ int isams_close (ISAMS is)
     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;
@@ -135,8 +133,8 @@ ISAMS_P isams_merge (ISAMS is, ISAMS_I data)
     }
     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)
@@ -145,9 +143,8 @@ ISAMS_P isams_merge (ISAMS is, ISAMS_I data)
 	{
 	    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)
 	    {
@@ -160,7 +157,7 @@ ISAMS_P isams_merge (ISAMS is, ISAMS_I data)
 	    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)
@@ -184,27 +181,29 @@ ISAMS_P isams_merge (ISAMS is, ISAMS_I data)
     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;
-    logf (LOG_LOG, "isams: isams_pp_open off=%d no=%d",
-	  pp->block_offset, pp->block_no);
+    pp->block_no = (int) (pos/is->block_size);
+    pp->block_offset = (int) (pos - pp->block_no * is->block_size);
+    if (is->debug)
+        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, 0, 0, pp->buf);
 	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));
-	logf (LOG_LOG, "isams: isams_pp_open numKeys=%d", pp->numKeys);
+        if (is->debug)
+	    yaz_log (YLOG_LOG, "isams: isams_pp_open numKeys=%d", pp->numKeys);
 	pp->block_offset += sizeof(int);
     }
     return pp;
@@ -212,7 +211,7 @@ ISAMS_PP isams_pp_open (ISAMS is, ISAMS_P pos)
 
 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);
 }
@@ -224,12 +223,13 @@ int isams_pp_num (ISAMS_PP 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)++;
@@ -242,10 +242,17 @@ int isams_read_item (ISAMS_PP pp, char **dst)
 		 pp->buf + pp->is->block_size);
     }
     src = pp->buf + pp->block_offset;
-    (*pp->is->method->code_item)(ISAMC_DECODE, pp->decodeClientData,
-				 dst, &src);
+    (*pp->is->method->codec.decode)(pp->decodeClientData, dst, &src);
     pp->block_offset = src - pp->buf; 
     return 1;
 }
 
 
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
+