Replace FileUtils with Kotlin stdlib calls (#843)

app/src/main/java/com/zeapo/pwdstore/PasswordStore.kt

@@ -55,7 +55,6 @@ import com.zeapo.pwdstore.git.GitOperationActivity
 import com.zeapo.pwdstore.git.GitServerConfigActivity
 import com.zeapo.pwdstore.git.config.ConnectionMode
 import com.zeapo.pwdstore.ui.dialogs.FolderCreationDialogFragment
-import com.zeapo.pwdstore.utils.FileUtils
 import com.zeapo.pwdstore.utils.PasswordItem
 import com.zeapo.pwdstore.utils.PasswordRepository
 import com.zeapo.pwdstore.utils.PasswordRepository.Companion.closeRepository
@@ -66,6 +65,7 @@ import com.zeapo.pwdstore.utils.PasswordRepository.Companion.getRepositoryDirect
 import com.zeapo.pwdstore.utils.PasswordRepository.Companion.initialize
 import com.zeapo.pwdstore.utils.PasswordRepository.Companion.isInitialized
 import com.zeapo.pwdstore.utils.PasswordRepository.PasswordSortOrder.Companion.getSortOrder
+import com.zeapo.pwdstore.utils.listFilesRecursively
 import org.eclipse.jgit.api.Git
 import org.eclipse.jgit.api.errors.GitAPIException
 import org.eclipse.jgit.revwalk.RevCommit
@@ -576,7 +576,7 @@ class PasswordStore : AppCompatActivity() {
             .setMessage(resources.getString(R.string.delete_dialog_text, item.longName))
             .setPositiveButton(resources.getString(R.string.dialog_yes)) { _, _ ->
                 val filesToDelete = if (item.file.isDirectory) {
-                    FileUtils.listFiles(item.file, true)
+                    item.file.listFilesRecursively()
                 } else {
                     listOf(item.file)
                 }
@@ -667,7 +667,7 @@ class PasswordStore : AppCompatActivity() {
                         if (dir != null &&
                             dir.exists() &&
                             dir.isDirectory &&
-                            !FileUtils.listFiles(dir, true).isEmpty() &&
+                            dir.listFilesRecursively().isNotEmpty() &&
                             getPasswords(dir, getRepositoryDirectory(this), sortOrder).isNotEmpty()) {
                             closeRepository()
                             checkLocalRepository()
@@ -702,7 +702,7 @@ class PasswordStore : AppCompatActivity() {
                             continue
                         }
                         val destinationFile = File(target.absolutePath + "/" + source.name)
-                        val basename = FileUtils.getBaseName(source.absolutePath)
+                        val basename = source.nameWithoutExtension
                         val sourceLongName = getLongName(requireNotNull(source.parent), repositoryPath, basename)
                         val destinationLongName = getLongName(target.absolutePath, repositoryPath, basename)
                         if (destinationFile.exists()) {
@@ -738,7 +738,7 @@ class PasswordStore : AppCompatActivity() {
             // Recursively list all files (not directories) below `source`, then
             // obtain the corresponding target file by resolving the relative path
             // starting at the destination folder.
-            val sourceFiles = FileUtils.listFiles(source, true)
+            val sourceFiles = source.listFilesRecursively()
             sourceFiles.associateWith { destinationFile.resolve(it.relativeTo(source)) }
         } else {
             mapOf(source to destinationFile)

app/src/main/java/com/zeapo/pwdstore/crypto/PgpActivity.kt

@@ -43,7 +43,6 @@ import com.zeapo.pwdstore.autofill.oreo.AutofillPreferences
 import com.zeapo.pwdstore.autofill.oreo.DirectoryStructure
 import com.zeapo.pwdstore.ui.dialogs.PasswordGeneratorDialogFragment
 import com.zeapo.pwdstore.ui.dialogs.XkPasswordGeneratorDialogFragment
-import com.zeapo.pwdstore.utils.FileUtils
 import kotlinx.android.synthetic.main.decrypt_layout.crypto_password_category_decrypt
 import kotlinx.android.synthetic.main.decrypt_layout.crypto_password_file
 import kotlinx.android.synthetic.main.decrypt_layout.crypto_password_last_changed
@@ -95,7 +94,7 @@ class PgpActivity : AppCompatActivity(), OpenPgpServiceConnection.OnBound {
     private val repoPath: String by lazy { intent.getStringExtra("REPO_PATH") }
 
     private val fullPath: String by lazy { intent.getStringExtra("FILE_PATH") }
-    private val name: String by lazy { getName(fullPath) }
+    private val name: String by lazy { File(fullPath).nameWithoutExtension }
     private val lastChangedString: CharSequence by lazy {
         getLastChangedString(
             intent.getLongExtra(
@@ -767,13 +766,6 @@ class PgpActivity : AppCompatActivity(), OpenPgpServiceConnection.OnBound {
             return "/${relativePath.substring(startIndex = 0, endIndex = index + 1)}/".replace("/+".toRegex(), "/")
         }
 
-        /**
-         * Gets the name of the password (excluding .gpg)
-         */
-        fun getName(fullPath: String): String {
-            return FileUtils.getBaseName(fullPath)
-        }
-
         /**
          * /path/to/store/social/facebook.gpg -> social/facebook
          */

app/src/main/java/com/zeapo/pwdstore/sshkeygen/ShowSshKeyFragment.kt

@@ -16,9 +16,7 @@ import androidx.core.content.getSystemService
 import androidx.fragment.app.DialogFragment
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.zeapo.pwdstore.R
-import com.zeapo.pwdstore.utils.FileUtils
 import java.io.File
-import java.nio.charset.StandardCharsets
 
 class ShowSshKeyFragment : DialogFragment() {
 

app/src/main/java/com/zeapo/pwdstore/utils/Extensions.kt

@@ -17,6 +17,7 @@ import androidx.appcompat.app.AlertDialog
 import androidx.core.content.getSystemService
 import androidx.security.crypto.EncryptedSharedPreferences
 import androidx.security.crypto.MasterKeys
+import java.io.File
 
 infix fun Int.hasFlag(flag: Int): Boolean {
     return this and flag == flag
@@ -32,6 +33,8 @@ fun CharArray.clear() {
     }
 }
 
+fun File.listFilesRecursively() = walkTopDown().filter { !it.isDirectory }.toList()
+
 fun Context.resolveAttribute(attr: Int): Int {
     val typedValue = TypedValue()
     this.theme.resolveAttribute(attr, typedValue, true)

app/src/main/java/com/zeapo/pwdstore/utils/FileUtils.kt

@@ -1,47 +0,0 @@
-/*
- * Copyright © 2014-2020 The Android Password Store Authors. All Rights Reserved.
- * SPDX-License-Identifier: GPL-3.0-only
- */
-
-package com.zeapo.pwdstore.utils
-
-import java.io.File
-
-object FileUtils {
-    @JvmStatic
-    fun listFiles(dir: File, recursive: Boolean): Collection<File> {
-        val res = ArrayList<File>()
-        val files = dir.listFiles()
-
-        if (files != null && files.isNotEmpty()) {
-
-            files.forEach { file ->
-                // Check if the file is a directory and recursive add
-                if (file.isDirectory && recursive) {
-                    res.addAll(listFiles(file, recursive))
-                } else if (!file.isDirectory) {
-                    res.add(file)
-                }
-            }
-        }
-        return res
-    }
-
-    @JvmStatic
-    fun getBaseName(filename: String): String {
-        // Take the file name along with its extension
-        val indexName = filename.lastIndexOf('/')
-        val nameWithExtension = filename.substring(indexName + 1)
-
-        // Find the final '.' character in the previously calculated nameWithExtension
-        val indexExt = nameWithExtension.lastIndexOf('.')
-
-        // If no '.' is found in the name, we assume this is a directory and return the previously
-        // derived nameWithExtensions as-is, otherwise we slice out a substring from the first character
-        // to the last occurrence of '.' which we found earlier.
-        return if (indexExt == -1)
-            nameWithExtension
-        else
-            nameWithExtension.substring(0, indexExt)
-    }
-}