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