53 lines
1.9 KiB
Java
53 lines
1.9 KiB
Java
/*
|
|
* Copyright (C) 2011 The Android Open Source Project
|
|
*
|
|
* Licensed 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
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing permissions and limitations under
|
|
* the License.
|
|
*/
|
|
|
|
package com.android.inputmethod.latin;
|
|
|
|
import java.io.File;
|
|
|
|
/**
|
|
* Immutable class to hold the address of an asset.
|
|
* As opposed to a normal file, an asset is usually represented as a contiguous byte array in
|
|
* the package file. Open it correctly thus requires the name of the package it is in, but
|
|
* also the offset in the file and the length of this data. This class encapsulates these three.
|
|
*/
|
|
final class AssetFileAddress {
|
|
public final String mFilename;
|
|
public final long mOffset;
|
|
public final long mLength;
|
|
|
|
public AssetFileAddress(final String filename, final long offset, final long length) {
|
|
mFilename = filename;
|
|
mOffset = offset;
|
|
mLength = length;
|
|
}
|
|
|
|
public static AssetFileAddress makeFromFileName(final String filename) {
|
|
if (null == filename) return null;
|
|
final File f = new File(filename);
|
|
if (!f.isFile()) return null;
|
|
return new AssetFileAddress(filename, 0l, f.length());
|
|
}
|
|
|
|
public static AssetFileAddress makeFromFileNameAndOffset(final String filename,
|
|
final long offset, final long length) {
|
|
if (null == filename) return null;
|
|
final File f = new File(filename);
|
|
if (!f.isFile()) return null;
|
|
return new AssetFileAddress(filename, offset, length);
|
|
}
|
|
}
|