121 lines
3.8 KiB
Java
121 lines
3.8 KiB
Java
/*
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* Copyright 2016 Hippo Seven
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.hippo.unifile;
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import android.content.ContentResolver;
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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 androidx.annotation.NonNull;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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final class Contracts {
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private Contracts() {
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}
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static String queryForString(Context context, Uri self, String column,
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String defaultValue) {
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final ContentResolver resolver = context.getContentResolver();
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Cursor c = null;
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try {
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c = resolver.query(self, new String[]{column}, null, null, null);
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if (c != null && c.moveToFirst() && !c.isNull(0)) {
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return c.getString(0);
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} else {
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return defaultValue;
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}
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} catch (Throwable e) {
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Utils.throwIfFatal(e);
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return defaultValue;
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} finally {
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Utils.closeQuietly(c);
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}
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}
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static int queryForInt(Context context, Uri self, String column,
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int defaultValue) {
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return (int) queryForLong(context, self, column, defaultValue);
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}
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static long queryForLong(Context context, Uri self, String column,
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long defaultValue) {
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final ContentResolver resolver = context.getContentResolver();
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Cursor c = null;
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try {
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c = resolver.query(self, new String[]{column}, null, null, null);
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if (c != null && c.moveToFirst() && !c.isNull(0)) {
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return c.getLong(0);
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} else {
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return defaultValue;
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}
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} catch (Throwable e) {
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Utils.throwIfFatal(e);
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return defaultValue;
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} finally {
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Utils.closeQuietly(c);
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}
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}
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@NonNull
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static OutputStream openOutputStream(Context context, Uri uri) throws IOException {
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try {
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OutputStream os = context.getContentResolver().openOutputStream(uri);
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if (os == null) {
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throw new IOException("Can't open OutputStream");
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}
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return os;
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} catch (Throwable e) {
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Utils.throwIfFatal(e);
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throw new IOException("Can't open OutputStream", e);
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}
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}
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@NonNull
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static OutputStream openOutputStream(Context context, Uri uri, boolean append) throws IOException {
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try {
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OutputStream os = context.getContentResolver().openOutputStream(uri, append ? "wa" : "w");
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if (os == null) {
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throw new IOException("Can't open OutputStream");
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}
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return os;
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} catch (Throwable e) {
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Utils.throwIfFatal(e);
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throw new IOException("Can't open OutputStream", e);
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}
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}
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@NonNull
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static InputStream openInputStream(Context context, Uri uri) throws IOException {
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try {
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InputStream is = context.getContentResolver().openInputStream(uri);
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if (is == null) {
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throw new IOException("Can't open InputStream");
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}
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return is;
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} catch (Throwable e) {
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Utils.throwIfFatal(e);
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throw new IOException("Can't open InputStream", e);
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}
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}
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}
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