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Size: 1.98 KB
Versions: 172
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Stored size: 1.98 KB
Contents
/*
* Copyright 2008 ZXing authors
*
* 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 com.google.zxing.client.result.optional;
import com.google.zxing.Result;
import com.google.zxing.client.result.TextParsedResult;
/**
* Recognizes an NDEF message that encodes text according to the
* "Text Record Type Definition" specification.
*
* @author Sean Owen
*/
final class NDEFTextResultParser extends AbstractNDEFResultParser {
public static TextParsedResult parse(Result result) {
byte[] bytes = result.getRawBytes();
if (bytes == null) {
return null;
}
NDEFRecord ndefRecord = NDEFRecord.readRecord(bytes, 0);
if (ndefRecord == null || !ndefRecord.isMessageBegin() || !ndefRecord.isMessageEnd()) {
return null;
}
if (!ndefRecord.getType().equals(NDEFRecord.TEXT_WELL_KNOWN_TYPE)) {
return null;
}
String[] languageText = decodeTextPayload(ndefRecord.getPayload());
return new TextParsedResult(languageText[0], languageText[1]);
}
static String[] decodeTextPayload(byte[] payload) {
byte statusByte = payload[0];
boolean isUTF16 = (statusByte & 0x80) != 0;
int languageLength = statusByte & 0x1F;
// language is always ASCII-encoded:
String language = bytesToString(payload, 1, languageLength, "US-ASCII");
String encoding = isUTF16 ? "UTF-16" : "UTF8";
String text = bytesToString(payload, 1 + languageLength, payload.length - languageLength - 1, encoding);
return new String[] { language, text };
}
}
Version data entries
172 entries across 111 versions & 2 rubygems