48 lines
1.6 KiB
Java
48 lines
1.6 KiB
Java
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/*
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* Copyright (C) 2010 The Android Open Source Project
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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 android.text;
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/**
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* Access the ICU bidi implementation.
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* @hide
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*/
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/* package */ class AndroidBidi {
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public static int bidi(int dir, char[] chs, byte[] chInfo, int n, boolean haveInfo) {
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if (chs == null || chInfo == null) {
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throw new NullPointerException();
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}
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if (n < 0 || chs.length < n || chInfo.length < n) {
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throw new IndexOutOfBoundsException();
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}
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switch(dir) {
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case Layout.DIR_REQUEST_LTR: dir = 0; break;
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case Layout.DIR_REQUEST_RTL: dir = 1; break;
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case Layout.DIR_REQUEST_DEFAULT_LTR: dir = -2; break;
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case Layout.DIR_REQUEST_DEFAULT_RTL: dir = -1; break;
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default: dir = 0; break;
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}
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int result = runBidi(dir, chs, chInfo, n, haveInfo);
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result = (result & 0x1) == 0 ? Layout.DIR_LEFT_TO_RIGHT : Layout.DIR_RIGHT_TO_LEFT;
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return result;
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}
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private native static int runBidi(int dir, char[] chs, byte[] chInfo, int n, boolean haveInfo);
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}
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