mirror of
https://github.com/moparisthebest/k-9
synced 2024-11-27 11:42:16 -05:00
Extract methods to make code more readable
This commit is contained in:
cketti
parent
5175ff9df4
commit
1f27897679
@ -13,6 +13,7 @@ import android.content.Context;
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import android.database.Cursor;
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import android.net.Uri;
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import android.os.AsyncTask;
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import android.util.Log;
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import android.widget.Toast;
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import com.fsck.k9.K9;
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@ -42,82 +43,122 @@ class DownloadImageTask extends AsyncTask<String, Void, String> {
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@Override
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protected String doInBackground(String... params) {
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String urlString = params[0];
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String url = params[0];
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try {
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boolean externalImage = urlString.startsWith("http");
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boolean isExternalImage = url.startsWith("http");
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String filename = null;
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String mimeType = null;
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InputStream in = null;
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try {
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if (externalImage) {
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URL url = new URL(urlString);
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URLConnection conn = url.openConnection();
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in = conn.getInputStream();
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String path = url.getPath();
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// Try to get the filename from the URL
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int start = path.lastIndexOf("/");
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if (start != -1 && start + 1 < path.length()) {
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filename = UrlEncodingHelper.decodeUtf8(path.substring(start + 1));
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} else {
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// Use a dummy filename if necessary
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filename = DEFAULT_FILE_NAME;
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}
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// Get the MIME type if we couldn't find a file extension
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if (filename.indexOf('.') == -1) {
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mimeType = conn.getContentType();
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}
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} else {
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ContentResolver contentResolver = context.getContentResolver();
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Uri uri = Uri.parse(urlString);
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// Get the filename from AttachmentProvider
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Cursor cursor = contentResolver.query(uri, ATTACHMENT_PROJECTION, null, null, null);
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if (cursor != null) {
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try {
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if (cursor.moveToNext()) {
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filename = cursor.getString(DISPLAY_NAME_INDEX);
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}
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} finally {
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cursor.close();
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}
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}
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// Use a dummy filename if necessary
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if (filename == null) {
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filename = DEFAULT_FILE_NAME;
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}
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// Get the MIME type if we couldn't find a file extension
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if (filename.indexOf('.') == -1) {
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mimeType = contentResolver.getType(uri);
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}
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in = contentResolver.openInputStream(uri);
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}
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filename = getFileNameWithExtension(filename, mimeType);
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return writeFileToStorage(filename, in);
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} finally {
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if (in != null) {
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in.close();
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}
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String fileName;
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if (isExternalImage) {
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fileName = downloadAndStoreImage(url);
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} else {
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fileName = fetchAndStoreImage(url);
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}
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return fileName;
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} catch (Exception e) {
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e.printStackTrace();
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Log.e(K9.LOG_TAG, "Error while downloading image", e);
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return null;
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}
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}
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private String getFileNameWithExtension(String filename, String mimeType) {
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if (filename.indexOf('.') != -1) {
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return filename;
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@Override
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protected void onPostExecute(String fileName) {
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boolean errorSavingFile = (fileName == null);
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String text;
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if (errorSavingFile) {
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text = context.getString(R.string.image_saving_failed);
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} else {
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text = context.getString(R.string.image_saved_as, fileName);
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}
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Toast.makeText(context, text, Toast.LENGTH_LONG).show();
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}
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private String downloadAndStoreImage(String urlString) throws IOException {
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URL url = new URL(urlString);
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URLConnection conn = url.openConnection();
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InputStream in = conn.getInputStream();
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try {
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String fileName = getFileNameFromUrl(url);
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String mimeType = getMimeType(conn, fileName);
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String fileNameWithExtension = getFileNameWithExtension(fileName, mimeType);
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return writeFileToStorage(fileNameWithExtension, in);
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} finally {
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in.close();
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}
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}
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private String getFileNameFromUrl(URL url) {
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String fileName;
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String path = url.getPath();
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int start = path.lastIndexOf("/");
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if (start != -1 && start + 1 < path.length()) {
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fileName = UrlEncodingHelper.decodeUtf8(path.substring(start + 1));
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} else {
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fileName = DEFAULT_FILE_NAME;
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}
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return fileName;
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}
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private String getMimeType(URLConnection conn, String fileName) {
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String mimeType = null;
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if (fileName.indexOf('.') == -1) {
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mimeType = conn.getContentType();
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}
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return mimeType;
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}
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private String fetchAndStoreImage(String urlString) throws IOException {
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ContentResolver contentResolver = context.getContentResolver();
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Uri uri = Uri.parse(urlString);
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String fileName = getFileNameFromContentProvider(contentResolver, uri);
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String mimeType = getMimeType(contentResolver, uri, fileName);
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InputStream in = contentResolver.openInputStream(uri);
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try {
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String fileNameWithExtension = getFileNameWithExtension(fileName, mimeType);
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return writeFileToStorage(fileNameWithExtension, in);
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} finally {
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in.close();
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}
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}
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private String getMimeType(ContentResolver contentResolver, Uri uri, String fileName) {
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String mimeType = null;
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if (fileName.indexOf('.') == -1) {
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mimeType = contentResolver.getType(uri);
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}
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return mimeType;
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}
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private String getFileNameFromContentProvider(ContentResolver contentResolver, Uri uri) {
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String displayName = DEFAULT_FILE_NAME;
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Cursor cursor = contentResolver.query(uri, ATTACHMENT_PROJECTION, null, null, null);
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if (cursor != null) {
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try {
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if (cursor.moveToNext() && !cursor.isNull(DISPLAY_NAME_INDEX)) {
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displayName = cursor.getString(DISPLAY_NAME_INDEX);
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}
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} finally {
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cursor.close();
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}
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}
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return displayName;
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}
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private String getFileNameWithExtension(String fileName, String mimeType) {
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if (fileName.indexOf('.') != -1) {
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return fileName;
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}
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// Use JPEG as fallback
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@ -129,11 +170,11 @@ class DownloadImageTask extends AsyncTask<String, Void, String> {
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}
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}
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return filename + "." + extension;
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return fileName + "." + extension;
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}
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private String writeFileToStorage(String filename, InputStream in) throws IOException {
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String sanitized = FileHelper.sanitizeFilename(filename);
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private String writeFileToStorage(String fileName, InputStream in) throws IOException {
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String sanitized = FileHelper.sanitizeFilename(fileName);
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File directory = new File(K9.getAttachmentDefaultPath());
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File file = FileHelper.createUniqueFile(directory, sanitized);
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@ -148,16 +189,4 @@ class DownloadImageTask extends AsyncTask<String, Void, String> {
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return file.getName();
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}
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@Override
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protected void onPostExecute(String filename) {
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String text;
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if (filename == null) {
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text = context.getString(R.string.image_saving_failed);
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} else {
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text = context.getString(R.string.image_saved_as, filename);
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}
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Toast.makeText(context, text, Toast.LENGTH_LONG).show();
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}
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}
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