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android: Convert DocumentsTree to Kotlin
This commit is contained in:
Charles Lombardo
bunnei
parent
711aedeaae
commit
2444df2bf4
2 changed files with 110 additions and 125 deletions
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@ -1,125 +0,0 @@
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package org.yuzu.yuzu_emu.utils;
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import android.content.Context;
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import android.net.Uri;
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import androidx.annotation.Nullable;
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import androidx.documentfile.provider.DocumentFile;
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import org.yuzu.yuzu_emu.YuzuApplication;
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import org.yuzu.yuzu_emu.model.MinimalDocumentFile;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.StringTokenizer;
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public class DocumentsTree {
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private DocumentsNode root;
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private final Context context;
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public static final String DELIMITER = "/";
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public DocumentsTree() {
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context = YuzuApplication.getAppContext();
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}
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public void setRoot(Uri rootUri) {
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root = null;
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root = new DocumentsNode();
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root.uri = rootUri;
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root.isDirectory = true;
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}
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public int openContentUri(String filepath, String openmode) {
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DocumentsNode node = resolvePath(filepath);
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if (node == null) {
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return -1;
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}
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return FileUtil.openContentUri(context, node.uri.toString(), openmode);
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}
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public long getFileSize(String filepath) {
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DocumentsNode node = resolvePath(filepath);
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if (node == null || node.isDirectory) {
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return 0;
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}
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return FileUtil.getFileSize(context, node.uri.toString());
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}
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public boolean Exists(String filepath) {
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return resolvePath(filepath) != null;
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}
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@Nullable
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private DocumentsNode resolvePath(String filepath) {
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StringTokenizer tokens = new StringTokenizer(filepath, DELIMITER, false);
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DocumentsNode iterator = root;
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while (tokens.hasMoreTokens()) {
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String token = tokens.nextToken();
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if (token.isEmpty()) continue;
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iterator = find(iterator, token);
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if (iterator == null) return null;
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}
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return iterator;
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}
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@Nullable
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private DocumentsNode find(DocumentsNode parent, String filename) {
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if (parent.isDirectory && !parent.loaded) {
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structTree(parent);
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}
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return parent.children.get(filename);
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}
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/**
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* Construct current level directory tree
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* @param parent parent node of this level
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*/
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private void structTree(DocumentsNode parent) {
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MinimalDocumentFile[] documents = FileUtil.listFiles(context, parent.uri);
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for (MinimalDocumentFile document: documents) {
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DocumentsNode node = new DocumentsNode(document);
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node.parent = parent;
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parent.children.put(node.name, node);
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}
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parent.loaded = true;
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}
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public static boolean isNativePath(String path) {
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if (path.length() > 0) {
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return path.charAt(0) == '/';
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}
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return false;
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}
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private static class DocumentsNode {
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private DocumentsNode parent;
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private final Map<String, DocumentsNode> children = new HashMap<>();
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private String name;
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private Uri uri;
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private boolean loaded = false;
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private boolean isDirectory = false;
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private DocumentsNode() {}
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private DocumentsNode(MinimalDocumentFile document) {
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name = document.getFilename();
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uri = document.getUri();
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isDirectory = document.isDirectory();
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loaded = !isDirectory;
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}
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private DocumentsNode(DocumentFile document, boolean isCreateDir) {
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name = document.getName();
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uri = document.getUri();
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isDirectory = isCreateDir;
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loaded = true;
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}
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private void rename(String name) {
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if (parent == null) {
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return;
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}
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parent.children.remove(this.name);
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this.name = name;
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parent.children.put(name, this);
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}
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}
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}
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@ -0,0 +1,110 @@
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package org.yuzu.yuzu_emu.utils
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import android.net.Uri
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import androidx.documentfile.provider.DocumentFile
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import org.yuzu.yuzu_emu.YuzuApplication
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import org.yuzu.yuzu_emu.model.MinimalDocumentFile
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import java.io.File
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import java.util.*
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class DocumentsTree {
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private var root: DocumentsNode? = null
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fun setRoot(rootUri: Uri?) {
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root = null
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root = DocumentsNode()
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root!!.uri = rootUri
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root!!.isDirectory = true
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}
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fun openContentUri(filepath: String, openMode: String?): Int {
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val node = resolvePath(filepath) ?: return -1
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return FileUtil.openContentUri(YuzuApplication.appContext, node.uri.toString(), openMode)
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}
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fun getFileSize(filepath: String): Long {
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val node = resolvePath(filepath)
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return if (node == null || node.isDirectory) {
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0
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} else FileUtil.getFileSize(YuzuApplication.appContext, node.uri.toString())
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}
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fun exists(filepath: String): Boolean {
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return resolvePath(filepath) != null
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}
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private fun resolvePath(filepath: String): DocumentsNode? {
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val tokens = StringTokenizer(filepath, File.separator, false)
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var iterator = root
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while (tokens.hasMoreTokens()) {
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val token = tokens.nextToken()
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if (token.isEmpty()) continue
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iterator = find(iterator, token)
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if (iterator == null) return null
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}
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return iterator
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}
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private fun find(parent: DocumentsNode?, filename: String): DocumentsNode? {
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if (parent!!.isDirectory && !parent.loaded) {
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structTree(parent)
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}
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return parent.children[filename]
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}
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/**
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* Construct current level directory tree
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* @param parent parent node of this level
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*/
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private fun structTree(parent: DocumentsNode) {
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val documents = FileUtil.listFiles(YuzuApplication.appContext, parent.uri!!)
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for (document in documents) {
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val node = DocumentsNode(document)
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node.parent = parent
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parent.children[node.name] = node
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}
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parent.loaded = true
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}
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private class DocumentsNode {
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var parent: DocumentsNode? = null
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val children: MutableMap<String?, DocumentsNode> = HashMap()
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var name: String? = null
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var uri: Uri? = null
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var loaded = false
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var isDirectory = false
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constructor()
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constructor(document: MinimalDocumentFile) {
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name = document.filename
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uri = document.uri
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isDirectory = document.isDirectory
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loaded = !isDirectory
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}
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private constructor(document: DocumentFile, isCreateDir: Boolean) {
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name = document.name
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uri = document.uri
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isDirectory = isCreateDir
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loaded = true
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}
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private fun rename(name: String) {
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if (parent == null) {
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return
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}
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parent!!.children.remove(this.name)
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this.name = name
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parent!!.children[name] = this
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}
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}
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companion object {
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@JvmStatic
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fun isNativePath(path: String): Boolean {
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return if (path.isNotEmpty()) {
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path[0] == '/'
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} else false
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}
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}
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}
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