mirror of
https://github.com/NativeScript/NativeScript.git
synced 2025-11-05 13:26:48 +08:00
feat(file-system): async read/write (#7671)
This commit is contained in:
Peter Staev
@@ -11,15 +11,22 @@ import android.util.Log;
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import java.io.BufferedInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.Closeable;
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import java.io.DataInputStream;
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import java.io.FileOutputStream;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.io.OutputStreamWriter;
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import java.io.UnsupportedEncodingException;
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import java.net.CookieHandler;
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import java.net.CookieManager;
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import java.net.HttpURLConnection;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.nio.CharBuffer;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Locale;
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@@ -585,4 +592,278 @@ public class Async {
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}
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}
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}
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public static class File {
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public static void readText(final String path, final String encoding, final CompleteCallback callback, final Object context) {
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final android.os.Handler mHandler = new android.os.Handler();
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threadPoolExecutor().execute(new Runnable() {
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@Override
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public void run() {
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final ReadTextTask task = new ReadTextTask(callback, context);
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final String result = task.doInBackground(path, encoding);
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mHandler.post(new Runnable() {
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@Override
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public void run() {
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task.onPostExecute(result);
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}
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});
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}
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});
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}
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public static void read(final String path, final CompleteCallback callback, final Object context) {
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final android.os.Handler mHandler = new android.os.Handler();
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threadPoolExecutor().execute(new Runnable() {
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@Override
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public void run() {
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final ReadTask task = new ReadTask(callback, context);
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final byte[] result = task.doInBackground(path);
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mHandler.post(new Runnable() {
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@Override
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public void run() {
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task.onPostExecute(result);
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}
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});
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}
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});
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}
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public static void writeText(final String path, final String content, final String encoding, final CompleteCallback callback, final Object context) {
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final android.os.Handler mHandler = new android.os.Handler();
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threadPoolExecutor().execute(new Runnable() {
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@Override
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public void run() {
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final WriteTextTask task = new WriteTextTask(callback, context);
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final boolean result = task.doInBackground(path, content, encoding);
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mHandler.post(new Runnable() {
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@Override
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public void run() {
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task.onPostExecute(result);
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}
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});
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}
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});
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}
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public static void write(final String path, final byte[] content, final CompleteCallback callback, final Object context) {
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final android.os.Handler mHandler = new android.os.Handler();
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threadPoolExecutor().execute(new Runnable() {
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@Override
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public void run() {
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final WriteTask task = new WriteTask(callback, context);
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final boolean result = task.doInBackground(path, content);
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mHandler.post(new Runnable() {
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@Override
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public void run() {
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task.onPostExecute(result);
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}
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});
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}
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});
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}
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static class ReadTextTask {
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private CompleteCallback callback;
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private Object context;
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public ReadTextTask(CompleteCallback callback, Object context) {
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this.callback = callback;
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this.context = context;
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}
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protected String doInBackground(String... params) {
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java.io.File javaFile = new java.io.File(params[0]);
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FileInputStream stream = null;
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try {
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stream = new FileInputStream(javaFile);
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InputStreamReader reader = new InputStreamReader(stream, params[1]);
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CharBuffer buffer = CharBuffer.allocate(81920);
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StringBuilder sb = new StringBuilder();
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while (reader.read(buffer) != -1) {
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buffer.flip();
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sb.append(buffer);
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buffer.clear();
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}
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reader.close();
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return sb.toString();
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} catch (FileNotFoundException e) {
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Log.e(TAG, "Failed to read file, FileNotFoundException: " + e.getMessage());
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return null;
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} catch (UnsupportedEncodingException e) {
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Log.e(TAG, "Failed to read file, UnsupportedEncodingException: " + e.getMessage());
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return null;
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} catch (IOException e) {
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Log.e(TAG, "Failed to read file, IOException: " + e.getMessage());
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return null;
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} finally {
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if (stream != null) {
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try {
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stream.close();
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} catch (IOException e) {
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Log.e(TAG, "Failed to close stream, IOException: " + e.getMessage());
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}
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}
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}
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}
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protected void onPostExecute(final String result) {
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if (result != null) {
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this.callback.onComplete(result, this.context);
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} else {
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this.callback.onError("ReadTextTask returns no result.", this.context);
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}
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}
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}
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static class ReadTask {
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private CompleteCallback callback;
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private Object context;
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public ReadTask(CompleteCallback callback, Object context) {
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this.callback = callback;
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this.context = context;
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}
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protected byte[] doInBackground(String... params) {
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java.io.File javaFile = new java.io.File(params[0]);
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FileInputStream stream = null;
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try {
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stream = new FileInputStream(javaFile);
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byte[] result = new byte[(int)javaFile.length()];
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DataInputStream dataInputStream = new DataInputStream(stream);
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dataInputStream.readFully(result);
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return result;
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} catch (FileNotFoundException e) {
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Log.e(TAG, "Failed to read file, FileNotFoundException: " + e.getMessage());
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return null;
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} catch (IOException e) {
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Log.e(TAG, "Failed to read file, IOException: " + e.getMessage());
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return null;
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} finally {
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if (stream != null) {
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try {
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stream.close();
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} catch (IOException e) {
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Log.e(TAG, "Failed to close stream, IOException: " + e.getMessage());
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}
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}
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}
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}
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protected void onPostExecute(final byte[] result) {
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if (result != null) {
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this.callback.onComplete(result, this.context);
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} else {
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this.callback.onError("ReadTask returns no result.", this.context);
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}
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}
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}
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static class WriteTextTask {
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private CompleteCallback callback;
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private Object context;
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public WriteTextTask(CompleteCallback callback, Object context) {
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this.callback = callback;
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this.context = context;
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}
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protected boolean doInBackground(String... params) {
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java.io.File javaFile = new java.io.File(params[0]);
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FileOutputStream stream = null;
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try {
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stream = new FileOutputStream(javaFile);
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OutputStreamWriter writer = new OutputStreamWriter(stream, params[2]);
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writer.write(params[1]);
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writer.close();
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return true;
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} catch (FileNotFoundException e) {
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Log.e(TAG, "Failed to write file, FileNotFoundException: " + e.getMessage());
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return false;
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} catch (UnsupportedEncodingException e) {
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Log.e(TAG, "Failed to write file, UnsupportedEncodingException: " + e.getMessage());
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return false;
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} catch (IOException e) {
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Log.e(TAG, "Failed to write file, IOException: " + e.getMessage());
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return false;
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} finally {
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if (stream != null) {
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try {
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stream.close();
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} catch (IOException e) {
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Log.e(TAG, "Failed to close stream, IOException: " + e.getMessage());
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}
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}
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}
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}
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protected void onPostExecute(final boolean result) {
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if (result) {
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this.callback.onComplete(null, this.context);
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} else {
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this.callback.onError("WriteTextTask returns no result.", this.context);
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}
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}
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}
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static class WriteTask {
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private CompleteCallback callback;
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private Object context;
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public WriteTask(CompleteCallback callback, Object context) {
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this.callback = callback;
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this.context = context;
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}
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protected boolean doInBackground(Object... params) {
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java.io.File javaFile = new java.io.File((String)params[0]);
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FileOutputStream stream = null;
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byte[] content = (byte[])params[1];
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try {
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stream = new FileOutputStream(javaFile);
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stream.write(content, 0, content.length);
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return true;
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} catch (FileNotFoundException e) {
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Log.e(TAG, "Failed to write file, FileNotFoundException: " + e.getMessage());
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return false;
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} catch (IOException e) {
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Log.e(TAG, "Failed to write file, IOException: " + e.getMessage());
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return false;
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} finally {
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if (stream != null) {
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try {
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stream.close();
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} catch (IOException e) {
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Log.e(TAG, "Failed to close stream, IOException: " + e.getMessage());
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}
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}
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}
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}
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protected void onPostExecute(final boolean result) {
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if (result) {
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this.callback.onComplete(null, this.context);
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} else {
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this.callback.onError("WriteTask returns no result.", this.context);
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}
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}
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}
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}
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}
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