diff options
Diffstat (limited to 'src/com/android/providers/contacts/debug/DumpFileProvider.java')
-rw-r--r-- | src/com/android/providers/contacts/debug/DumpFileProvider.java | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/src/com/android/providers/contacts/debug/DumpFileProvider.java b/src/com/android/providers/contacts/debug/DumpFileProvider.java new file mode 100644 index 0000000..1fbe43c --- /dev/null +++ b/src/com/android/providers/contacts/debug/DumpFileProvider.java @@ -0,0 +1,113 @@ +/* + * Copyright (C) 2012 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.android.providers.contacts.debug; + +import android.content.ContentProvider; +import android.content.ContentValues; +import android.database.Cursor; +import android.database.MatrixCursor; +import android.net.Uri; +import android.os.ParcelFileDescriptor; +import android.provider.OpenableColumns; + +import java.io.File; +import java.io.FileNotFoundException; + +/** + * Provider used to read dump files created by {@link DataExporter}. + * + * We send content: URI to sender apps (such as gmail). This provider implement the URI. + */ +public class DumpFileProvider extends ContentProvider { + public static final String AUTHORITY = "com.android.contacts.dumpfile"; + public static final Uri AUTHORITY_URI = Uri.parse("content://" + AUTHORITY); + + @Override + public boolean onCreate() { + return true; + } + + @Override + public Uri insert(Uri uri, ContentValues values) { + // Not needed. + throw new UnsupportedOperationException(); + } + + @Override + public int delete(Uri uri, String selection, String[] selectionArgs) { + // Not needed. + throw new UnsupportedOperationException(); + } + + @Override + public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) { + // Not needed. + throw new UnsupportedOperationException(); + } + + @Override + public String getType(Uri uri) { + return DataExporter.ZIP_MIME_TYPE; + } + + /** @return the path part of a URI, without the beginning "/". */ + private static String extractFileName(Uri uri) { + final String path = uri.getPath(); + return path.startsWith("/") ? path.substring(1) : path; + } + + /** @return file content */ + @Override + public ParcelFileDescriptor openFile(Uri uri, String mode) throws FileNotFoundException { + if (!"r".equals(mode)) { + throw new UnsupportedOperationException(); + } + final File file = DataExporter.getOutputFile(getContext(), extractFileName(uri)); + return ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY); + } + + /** + * Used to provide {@link OpenableColumns#DISPLAY_NAME} and {@link OpenableColumns#SIZE} + * for a URI. + */ + @Override + public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, + String sortOrder) { + if (projection == null) throw new IllegalArgumentException("Projection must not be null"); + + final MatrixCursor c = new MatrixCursor(projection); + + // Result will always have one row. + final MatrixCursor.RowBuilder b = c.newRow(); + + for (int i = 0; i < c.getColumnCount(); i++) { + final String column = projection[i]; + if (OpenableColumns.DISPLAY_NAME.equals(column)) { + // Just return the requested path as the display name. We don't care if the file + // really exists. + b.add(extractFileName(uri)); + } else if (OpenableColumns.SIZE.equals(column)) { + // Always return "unkown" for file size. + b.add(null); + } else { + throw new IllegalArgumentException("Unknown column " + column); + } + } + + return c; + } +} |