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November 8, 2017 15:55
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UriRecord class for the NFC Reader Tutorial
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/* | |
* Copyright (C) 2010 The Android Open Source Project | |
* Modified by Sylvain Saurel for a tutorial | |
* | |
* 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.ssaurel.nfcreader.record; | |
import android.app.Activity; | |
import android.net.Uri; | |
import android.nfc.NdefRecord; | |
import android.text.util.Linkify; | |
import android.view.LayoutInflater; | |
import android.view.View; | |
import android.view.ViewGroup; | |
import android.widget.TextView; | |
import com.google.common.base.Preconditions; | |
import com.google.common.collect.BiMap; | |
import com.google.common.collect.ImmutableBiMap; | |
import com.google.common.primitives.Bytes; | |
import com.ssaurel.nfcreader.R; | |
import com.ssaurel.nfcreader.model.History; | |
import com.ssaurel.nfcreader.utils.NFCReaderApp; | |
import java.nio.charset.Charset; | |
import java.util.Arrays; | |
/** | |
* A parsed record containing a Uri. | |
*/ | |
public class UriRecord implements ParsedNdefRecord { | |
private static final String TAG = "UriRecord"; | |
public static final String RECORD_TYPE = "UriRecord"; | |
/** | |
* NFC Forum "URI Record Type Definition" | |
* | |
* This is a mapping of "URI Identifier Codes" to URI string prefixes, | |
* per section 3.2.2 of the NFC Forum URI Record Type Definition document. | |
*/ | |
private static final BiMap<Byte, String> URI_PREFIX_MAP = ImmutableBiMap.<Byte, String>builder() | |
.put((byte) 0x00, "") | |
.put((byte) 0x01, "http://www.") | |
.put((byte) 0x02, "https://www.") | |
.put((byte) 0x03, "http://") | |
.put((byte) 0x04, "https://") | |
.put((byte) 0x05, "tel:") | |
.put((byte) 0x06, "mailto:") | |
.put((byte) 0x07, "ftp://anonymous:anonymous@") | |
.put((byte) 0x08, "ftp://ftp.") | |
.put((byte) 0x09, "ftps://") | |
.put((byte) 0x0A, "sftp://") | |
.put((byte) 0x0B, "smb://") | |
.put((byte) 0x0C, "nfs://") | |
.put((byte) 0x0D, "ftp://") | |
.put((byte) 0x0E, "dav://") | |
.put((byte) 0x0F, "news:") | |
.put((byte) 0x10, "telnet://") | |
.put((byte) 0x11, "imap:") | |
.put((byte) 0x12, "rtsp://") | |
.put((byte) 0x13, "urn:") | |
.put((byte) 0x14, "pop:") | |
.put((byte) 0x15, "sip:") | |
.put((byte) 0x16, "sips:") | |
.put((byte) 0x17, "tftp:") | |
.put((byte) 0x18, "btspp://") | |
.put((byte) 0x19, "btl2cap://") | |
.put((byte) 0x1A, "btgoep://") | |
.put((byte) 0x1B, "tcpobex://") | |
.put((byte) 0x1C, "irdaobex://") | |
.put((byte) 0x1D, "file://") | |
.put((byte) 0x1E, "urn:epc:id:") | |
.put((byte) 0x1F, "urn:epc:tag:") | |
.put((byte) 0x20, "urn:epc:pat:") | |
.put((byte) 0x21, "urn:epc:raw:") | |
.put((byte) 0x22, "urn:epc:") | |
.put((byte) 0x23, "urn:nfc:") | |
.build(); | |
private final Uri mUri; | |
public UriRecord(Uri uri) { | |
this.mUri = Preconditions.checkNotNull(uri); | |
} | |
public String str() { | |
return mUri.toString(); | |
} | |
public Uri getUri() { | |
return mUri; | |
} | |
/** | |
* Convert {@link NdefRecord} into a {@link Uri}. | |
* This will handle both TNF_WELL_KNOWN / RTD_URI and TNF_ABSOLUTE_URI. | |
* | |
* @throws IllegalArgumentException if the NdefRecord is not a record | |
* containing a URI. | |
*/ | |
public static UriRecord parse(NdefRecord record) { | |
short tnf = record.getTnf(); | |
if (tnf == NdefRecord.TNF_WELL_KNOWN) { | |
return parseWellKnown(record); | |
} else if (tnf == NdefRecord.TNF_ABSOLUTE_URI) { | |
return parseAbsolute(record); | |
} | |
throw new IllegalArgumentException("Unknown TNF " + tnf); | |
} | |
/** Parse and absolute URI record */ | |
private static UriRecord parseAbsolute(NdefRecord record) { | |
byte[] payload = record.getPayload(); | |
Uri uri = Uri.parse(new String(payload, Charset.forName("UTF-8"))); | |
return new UriRecord(uri); | |
} | |
/** Parse an well known URI record */ | |
private static UriRecord parseWellKnown(NdefRecord record) { | |
Preconditions.checkArgument(Arrays.equals(record.getType(), NdefRecord.RTD_URI)); | |
byte[] payload = record.getPayload(); | |
/* | |
* payload[0] contains the URI Identifier Code, per the | |
* NFC Forum "URI Record Type Definition" section 3.2.2. | |
* | |
* payload[1]...payload[payload.length - 1] contains the rest of | |
* the URI. | |
*/ | |
String prefix = URI_PREFIX_MAP.get(payload[0]); | |
byte[] fullUri = | |
Bytes.concat(prefix.getBytes(Charset.forName("UTF-8")), Arrays.copyOfRange(payload, 1, | |
payload.length)); | |
Uri uri = Uri.parse(new String(fullUri, Charset.forName("UTF-8"))); | |
return new UriRecord(uri); | |
} | |
public static boolean isUri(NdefRecord record) { | |
try { | |
parse(record); | |
return true; | |
} catch (IllegalArgumentException e) { | |
return false; | |
} | |
} | |
private static final byte[] EMPTY = new byte[0]; | |
} |
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