office-gobmx/connectivity/com/sun/star/sdbcx/comp/hsqldb/StorageAccess.java
Sophia Schröder f4fc28aedf Revert "Remove dead HSQLDB driver"
We cannot silently convert user data or their used file formats
and then await them to accept it or reinstall an older version.

Let us make a soft change instead of an hard (heart) break
and avoid us to been attacked with fire and forks from our users.

This reverts commit 8d381ae8d6.

Change-Id: Ia153640935e355771acb85cf652f8fe4c21fafbb
Reviewed-on: https://gerrit.libreoffice.org/52731
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Tamás Bunth <btomi96@gmail.com>
2018-04-12 09:09:37 +02:00

126 lines
4 KiB
Java

/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
package com.sun.star.sdbcx.comp.hsqldb;
@SuppressWarnings("ucd")
public class StorageAccess implements org.hsqldb.lib.Storage {
String key;
String name;
boolean readonly;
NativeStorageAccess access;
/** Creates a new instance of StorageAccess */
public StorageAccess(String name,Boolean readonly,Object key) throws java.io.IOException{
this.key = (String)key;
this.name = name;
this.readonly = readonly.booleanValue();
try {
access = new NativeStorageAccess(name,
this.readonly ? "r" : "rw"
,key);
} catch(Exception ex1){
java.io.IOException ex2 = new java.io.IOException();
ex2.initCause(ex1);
throw ex2;
}
}
public void close() throws java.io.IOException{
access.close(name,key);
}
public long getFilePointer() throws java.io.IOException{
return access.getFilePointer(name,key);
}
public long length() throws java.io.IOException{
return access.length(name,key);
}
public int read() throws java.io.IOException{
return access.read(name,key);
}
public void read(byte[] b, int off, int len) throws java.io.IOException{
access.read(name,key,b,off,len);
}
// based on the same code that reads an int from the .data file in HSQLDB
public int readInt() throws java.io.IOException{
byte [] tmp = new byte [4];
int count = access.read(name,key,tmp,0, 4);
if (count != 4){
throw new java.io.IOException();
}
count = 0;
int ch0 = tmp[count++] & 0xff;
int ch1 = tmp[count++] & 0xff;
int ch2 = tmp[count++] & 0xff;
int ch3 = tmp[count] & 0xff;
return ((ch0 << 24) + (ch1 << 16) + (ch2 << 8) + (ch3));
}
public void seek(long position) throws java.io.IOException{
access.seek(name,key,position);
}
public void write(byte[] b, int offset, int length) throws java.io.IOException{
access.write(name,key,b,offset,length);
}
public void writeInt(int v) throws java.io.IOException{
byte [] oneByte = new byte [4];
oneByte[0] = (byte) ((v >>> 24) & 0xFF);
oneByte[1] = (byte) ((v >>> 16) & 0xFF);
oneByte[2] = (byte) ((v >>> 8) & 0xFF);
oneByte[3] = (byte) ((v >>> 0) & 0xFF);
write(oneByte,0,4);
}
public boolean isReadOnly() {
return readonly;
}
@SuppressWarnings("cast")
public long readLong() throws java.io.IOException {
return (((long) readInt()) << 32) + (((long) readInt()) & 0xFFFFFFFFL);
}
public boolean wasNio() {
return false;
}
public void writeLong(long v) throws java.io.IOException {
byte [] oneByte = new byte [8];
oneByte[0] = (byte) ((v >>> 56) & 0xFF);
oneByte[1] = (byte) ((v >>> 48) & 0xFF);
oneByte[2] = (byte) ((v >>> 40) & 0xFF);
oneByte[3] = (byte) ((v >>> 32) & 0xFF);
oneByte[4] = (byte) ((v >>> 24) & 0xFF);
oneByte[5] = (byte) ((v >>> 16) & 0xFF);
oneByte[6] = (byte) ((v >>> 8) & 0xFF);
oneByte[7] = (byte) ((v >>> 0) & 0xFF);
write(oneByte,0,8);
}
}