58 lines
1.7 KiB
Java
58 lines
1.7 KiB
Java
/*
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* Copyright (C) 2014 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 com.android.internal.alsa;
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/**
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* @hide
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* Breaks lines in an ALSA "cards" or "devices" file into tokens.
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* TODO(pmclean) Look into replacing this with String.split().
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*/
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public class LineTokenizer {
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public static final int kTokenNotFound = -1;
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private final String mDelimiters;
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public LineTokenizer(String delimiters) {
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mDelimiters = delimiters;
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}
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int nextToken(String line, int startIndex) {
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int len = line.length();
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int offset = startIndex;
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for (; offset < len; offset++) {
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if (mDelimiters.indexOf(line.charAt(offset)) == -1) {
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// past a delimiter
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break;
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}
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}
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return offset < len ? offset : kTokenNotFound;
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}
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int nextDelimiter(String line, int startIndex) {
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int len = line.length();
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int offset = startIndex;
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for (; offset < len; offset++) {
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if (mDelimiters.indexOf(line.charAt(offset)) != -1) {
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// past a delimiter
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break;
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}
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}
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return offset < len ? offset : kTokenNotFound;
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}
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}
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