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      1 /*
      2  * Copyright 2018 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.tools.build.jetifier.processor.archive
     18 
     19 import java.io.IOException
     20 import java.io.OutputStream
     21 import java.nio.file.Path
     22 
     23 /**
     24  * Represents a file in the archive that is not an archive.
     25  */
     26 class ArchiveFile(relativePath: Path, data: ByteArray) : ArchiveItem {
     27 
     28     override var relativePath = relativePath
     29         private set
     30 
     31     override var fileName: String = relativePath.fileName.toString()
     32         private set
     33 
     34     override var wasChanged: Boolean = false
     35         private set
     36 
     37     var data: ByteArray = data
     38         private set
     39 
     40     override fun accept(visitor: ArchiveItemVisitor) {
     41         visitor.visit(this)
     42     }
     43 
     44     @Throws(IOException::class)
     45     override fun writeSelfTo(outputStream: OutputStream) {
     46         outputStream.write(data)
     47     }
     48 
     49     fun updateRelativePath(newRelativePath: Path) {
     50         if (relativePath != newRelativePath) {
     51             wasChanged = true
     52         }
     53 
     54         relativePath = newRelativePath
     55         fileName = relativePath.fileName.toString()
     56     }
     57 
     58     /**
     59      * Sets new data while also marking this file as changed. This will result into the parent
     60      * archive also being considered as changed thus marking it as dependent on the Support library.
     61      */
     62     fun setNewData(newData: ByteArray) {
     63         data = newData
     64         wasChanged = true
     65     }
     66 
     67     /**
     68      * Sets a potentially new data without triggering a change. Useful in cases the change is not
     69      * significant for the refactoring because it occurred due to some optimization or
     70      * formatting change.
     71      *
     72      * If there was at least one genuine change in any file of the parent archive this won't prevent
     73      * this file from being updated. However this will prevent the change to propagate to
     74      * the parent archive which would otherwise mark it as dependent on the Support Library.
     75      */
     76     fun setNewDataSilently(newData: ByteArray) {
     77         data = newData
     78     }
     79 }