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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.bluetooth.client.map.utils;
import android.util.Log;
import java.text.ParseException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public final class BmsgTokenizer {
private final String mStr;
private final Matcher mMatcher;
private int mPos = 0;
private final int mOffset;
static public class Property {
public final String name;
public final String value;
public Property(String name, String value) {
if (name == null || value == null) {
throw new IllegalArgumentException();
}
this.name = name;
this.value = value;
Log.v("BMSG >> ", toString());
}
@Override
public String toString() {
return name + ":" + value;
}
@Override
public boolean equals(Object o) {
return ((o instanceof Property) && ((Property) o).name.equals(name) && ((Property) o).value
.equals(value));
}
};
public BmsgTokenizer(String str) {
this(str, 0);
}
public BmsgTokenizer(String str, int offset) {
mStr = str;
mOffset = offset;
mMatcher = Pattern.compile("(([^:]*):(.*))?\r\n").matcher(str);
mPos = mMatcher.regionStart();
}
public Property next(boolean alwaysReturn) throws ParseException {
boolean found = false;
do {
mMatcher.region(mPos, mMatcher.regionEnd());
if (!mMatcher.lookingAt()) {
if (alwaysReturn) {
return null;
}
throw new ParseException("Property or empty line expected", pos());
}
mPos = mMatcher.end();
if (mMatcher.group(1) != null) {
found = true;
}
} while (!found);
return new Property(mMatcher.group(2), mMatcher.group(3));
}
public Property next() throws ParseException {
return next(false);
}
public String remaining() {
return mStr.substring(mPos);
}
public int pos() {
return mPos + mOffset;
}
}
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