From 5b403723fdd074e1b510aa4fbe1e2685fda156e3 Mon Sep 17 00:00:00 2001
From: Sebastian Hammer <quinn@indexdata.com>
Date: Wed, 28 Sep 1994 12:56:09 +0000
Subject: [PATCH] Added access functions (ISPT)

---
 include/isam.h |    7 +++++--
 isam/isam.c    |   49 ++++++++++++++++++++++++++++++++++++++++++++++---
 2 files changed, 51 insertions(+), 5 deletions(-)

diff --git a/include/isam.h b/include/isam.h
index 2ad05ee..4febc17 100644
--- a/include/isam.h
+++ b/include/isam.h
@@ -4,7 +4,10 @@
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: isam.h,v $
- * Revision 1.7  1994-09-28 11:56:13  quinn
+ * Revision 1.8  1994-09-28 12:56:09  quinn
+ * Added access functions (ISPT)
+ *
+ * Revision 1.7  1994/09/28  11:56:13  quinn
  * Removed const from input to is_merge
  *
  * Revision 1.6  1994/09/28  11:29:28  quinn
@@ -74,7 +77,7 @@ typedef struct isam_struct
 
 typedef struct ispt_struct
 {
-    struct is_mtable *tab;
+    struct is_mtable tab;
     struct ispt_struct *next;      /* freelist */
 } ispt_struct, *ISPT; 
 
diff --git a/isam/isam.c b/isam/isam.c
index 7fee014..98a1f01 100644
--- a/isam/isam.c
+++ b/isam/isam.c
@@ -4,7 +4,10 @@
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: isam.c,v $
- * Revision 1.8  1994-09-28 12:32:17  quinn
+ * Revision 1.9  1994-09-28 12:56:15  quinn
+ * Added access functions (ISPT)
+ *
+ * Revision 1.8  1994/09/28  12:32:17  quinn
  * Trivial
  *
  * Revision 1.7  1994/09/28  11:56:25  quinn
@@ -40,6 +43,27 @@
 #include "keyops.h"
 
 static int (*extcmp)(const void *p1, const void *p2);
+static ispt_struct *ispt_freelist = 0;
+
+static ISPT ispt_alloc()
+{
+    ISPT p;
+
+    if (ispt_freelist)
+    {
+    	p = ispt_freelist;
+    	ispt_freelist = ispt_freelist->next;
+    }
+    else
+    	p = xmalloc(sizeof(ispt_struct));
+    return p;
+}
+
+static void ispt_free(ISPT pt)
+{
+    pt->next = ispt_freelist;
+    ispt_freelist = pt;
+}
 
 static int splitargs(const char *s, char *bf[], int max)
 {
@@ -389,9 +413,28 @@ ISAM_P is_merge(ISAM is, ISAM_P pos, int num, char *data)
  * Locate a table of keys in an isam file. The ISPT is an individual
  * position marker for that table.
  */
-ISPT is_position(ISAM is, ISAM_P pos);
+ISPT is_position(ISAM is, ISAM_P pos)
+{
+    ispt_struct *p;
+
+    p = ispt_alloc();
+    is_m_establish_tab(is, &p->tab, pos);
+    return p;
+}
 
 /*
  * Release ISPT.
  */
-void is_pt_free(ISPT ip);
+void is_pt_free(ISPT ip)
+{
+    is_m_release_tab(&ip->tab);
+    ispt_free(ip);
+}
+
+/*
+ * Read a key from a table.
+ */
+int is_readkey(ISPT ip, void *buf)
+{
+    return is_m_read_record(&ip->tab, buf);
+}    
-- 
1.7.10.4