Agrego métodos y atributos al diagrama de clases.

[z.facultad/75.52/treemulator.git] / src / btree.cpp

diff --git a/src/btree.cpp b/src/btree.cpp
index adb0ae7175bb4f2c28ea5d302c0b03ca8caa0bad..a063befcafc4d49cfb9b2c5f8fc59e8711a122d5 100644 (file)
--- a/src/btree.cpp
+++ b/src/btree.cpp
@@ -45,14 +45,15 @@ void BTree::WriteFileHeader ()
 
 void BTree::WriteBlock (uchar *block, uint num)
 {
-       fseek (fp, num*header.block_size + sizeof (BTreeFileHeader), SEEK_SET);
+       num++;
+       fseek (fp, num*header.block_size, SEEK_SET);
        fwrite (block, 1, header.block_size, fp);
 }
 
 void BTree::AddKey (const Clave &k)
 {
        uint left, right;
-       Clave *kout = AddKeyR (&k, 0, left, right);
+       Clave *kout = AddKeyR (k.Clone (), 0, left, right);
 
        if (kout) {
                unsigned short level;
@@ -91,8 +92,6 @@ void BTree::AddKey (const Clave &k)
                delete [] node;
                DeleteKeys (node_keys);
                PrintNode (0);
-
-               delete kout;
        }
 }
 
@@ -404,9 +403,14 @@ void BTree::WriteNodoHeader (uchar *node, BTreeNodeHeader *header)
 
 uchar *BTree::ReadBlock (uint num)
 {
+       /* Como el bloque 0 se usa para el header, el Nodo "num"
+        * está en el bloque "num+1"
+        */
+       num++;
+
        uchar *out = new uchar[header.block_size];
 
-       fseek (fp, num*header.block_size + sizeof (BTreeFileHeader), SEEK_SET); 
+       fseek (fp, num*header.block_size, SEEK_SET);    
        fread (out, 1, header.block_size, fp);
 
        return out;
@@ -503,7 +507,7 @@ uchar *BTree::NewBlock (uint &num)
        fseek (fp, 0, SEEK_END);
        filelen = ftell (fp);
 
-       num = (filelen - sizeof (BTreeFileHeader))/header.block_size;
+       num = filelen/header.block_size - 1;
 
        node = new uchar[header.block_size];
        ReadNodoHeader (node, &nh);