[DeviceService] Move //device/nfc to be part of the internal impl of Device Service

device/nfc/android/java/src/org/chromium/device/nfc/NfcTypeConverter.java

Index: device/nfc/android/java/src/org/chromium/device/nfc/NfcTypeConverter.java
diff --git a/device/nfc/android/java/src/org/chromium/device/nfc/NfcTypeConverter.java b/device/nfc/android/java/src/org/chromium/device/nfc/NfcTypeConverter.java
deleted file mode 100644
index bd6f892901ae707e74c23af9b2132d2cf0498139..0000000000000000000000000000000000000000
--- a/device/nfc/android/java/src/org/chromium/device/nfc/NfcTypeConverter.java
+++ /dev/null
@@ -1,225 +0,0 @@
-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-package org.chromium.device.nfc;
-
-import android.net.Uri;
-import android.nfc.NdefMessage;
-import android.nfc.NdefRecord;
-import android.os.Build;
-
-import org.chromium.base.Log;
-import org.chromium.device.nfc.mojom.NfcMessage;
-import org.chromium.device.nfc.mojom.NfcRecord;
-import org.chromium.device.nfc.mojom.NfcRecordType;
-
-import java.io.UnsupportedEncodingException;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-
-/**
- * Utility class that provides convesion between Android NdefMessage
- * and mojo NfcMessage data structures.
- */
-public final class NfcTypeConverter {
-    private static final String TAG = "NfcTypeConverter";
-    private static final String DOMAIN = "w3.org";
-    private static final String TYPE = "webnfc";
-    private static final String WEBNFC_URN = DOMAIN + ":" + TYPE;
-    private static final String TEXT_MIME = "text/plain";
-    private static final String JSON_MIME = "application/json";
-    private static final String CHARSET_UTF8 = ";charset=UTF-8";
-    private static final String CHARSET_UTF16 = ";charset=UTF-16";
-
-    /**
-     * Converts mojo NfcMessage to android.nfc.NdefMessage
-     */
-    public static NdefMessage toNdefMessage(NfcMessage message) throws InvalidNfcMessageException {
-        try {
-            List<NdefRecord> records = new ArrayList<NdefRecord>();
-            for (int i = 0; i < message.data.length; ++i) {
-                records.add(toNdefRecord(message.data[i]));
-            }
-            records.add(NdefRecord.createExternal(DOMAIN, TYPE, message.url.getBytes("UTF-8")));
-            NdefRecord[] ndefRecords = new NdefRecord[records.size()];
-            records.toArray(ndefRecords);
-            return new NdefMessage(ndefRecords);
-        } catch (UnsupportedEncodingException | InvalidNfcMessageException
-                | IllegalArgumentException e) {
-            throw new InvalidNfcMessageException();
-        }
-    }
-
-    /**
-     * Converts android.nfc.NdefMessage to mojo NfcMessage
-     */
-    public static NfcMessage toNfcMessage(NdefMessage ndefMessage)
-            throws UnsupportedEncodingException {
-        NdefRecord[] ndefRecords = ndefMessage.getRecords();
-        NfcMessage nfcMessage = new NfcMessage();
-        List<NfcRecord> nfcRecords = new ArrayList<NfcRecord>();
-
-        for (int i = 0; i < ndefRecords.length; i++) {
-            if ((ndefRecords[i].getTnf() == NdefRecord.TNF_EXTERNAL_TYPE)
-                    && (Arrays.equals(ndefRecords[i].getType(), WEBNFC_URN.getBytes("UTF-8")))) {
-                nfcMessage.url = new String(ndefRecords[i].getPayload(), "UTF-8");
-                continue;
-            }
-
-            NfcRecord nfcRecord = toNfcRecord(ndefRecords[i]);
-            if (nfcRecord != null) nfcRecords.add(nfcRecord);
-        }
-
-        nfcMessage.data = new NfcRecord[nfcRecords.size()];
-        nfcRecords.toArray(nfcMessage.data);
-        return nfcMessage;
-    }
-
-    /**
-     * Returns charset of mojo NfcRecord. Only applicable for URL and TEXT records.
-     * If charset cannot be determined, UTF-8 charset is used by default.
-     */
-    private static String getCharset(NfcRecord record) {
-        if (record.mediaType.endsWith(CHARSET_UTF8)) return "UTF-8";
-
-        // When 16bit WTF::String data is converted to bytearray, it is in LE byte order, without
-        // BOM. By default, Android interprets UTF-16 charset without BOM as UTF-16BE, thus, use
-        // UTF-16LE as encoding for text data.
-
-        if (record.mediaType.endsWith(CHARSET_UTF16)) return "UTF-16LE";
-
-        Log.w(TAG, "Unknown charset, defaulting to UTF-8.");
-        return "UTF-8";
-    }
-
-    /**
-     * Converts mojo NfcRecord to android.nfc.NdefRecord
-     */
-    private static NdefRecord toNdefRecord(NfcRecord record) throws InvalidNfcMessageException,
-                                                                    IllegalArgumentException,
-                                                                    UnsupportedEncodingException {
-        switch (record.recordType) {
-            case NfcRecordType.URL:
-                return NdefRecord.createUri(new String(record.data, getCharset(record)));
-            case NfcRecordType.TEXT:
-                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
-                    return NdefRecord.createTextRecord(
-                            "en-US", new String(record.data, getCharset(record)));
-                } else {
-                    return NdefRecord.createMime(TEXT_MIME, record.data);
-                }
-            case NfcRecordType.JSON:
-            case NfcRecordType.OPAQUE_RECORD:
-                return NdefRecord.createMime(record.mediaType, record.data);
-            default:
-                throw new InvalidNfcMessageException();
-        }
-    }
-
-    /**
-     * Converts android.nfc.NdefRecord to mojo NfcRecord
-     */
-    private static NfcRecord toNfcRecord(NdefRecord ndefRecord)
-            throws UnsupportedEncodingException {
-        switch (ndefRecord.getTnf()) {
-            case NdefRecord.TNF_EMPTY:
-                return createEmptyRecord();
-            case NdefRecord.TNF_MIME_MEDIA:
-                return createMIMERecord(
-                        new String(ndefRecord.getType(), "UTF-8"), ndefRecord.getPayload());
-            case NdefRecord.TNF_ABSOLUTE_URI:
-                return createURLRecord(ndefRecord.toUri());
-            case NdefRecord.TNF_WELL_KNOWN:
-                return createWellKnownRecord(ndefRecord);
-        }
-        return null;
-    }
-
-    /**
-     * Constructs empty NdefMessage
-     */
-    public static NdefMessage emptyNdefMessage() {
-        return new NdefMessage(new NdefRecord(NdefRecord.TNF_EMPTY, null, null, null));
-    }
-
-    /**
-     * Constructs empty NfcRecord
-     */
-    private static NfcRecord createEmptyRecord() {
-        NfcRecord nfcRecord = new NfcRecord();
-        nfcRecord.recordType = NfcRecordType.EMPTY;
-        nfcRecord.mediaType = "";
-        nfcRecord.data = new byte[0];
-        return nfcRecord;
-    }
-
-    /**
-     * Constructs URL NfcRecord
-     */
-    private static NfcRecord createURLRecord(Uri uri) {
-        if (uri == null) return null;
-        NfcRecord nfcRecord = new NfcRecord();
-        nfcRecord.recordType = NfcRecordType.URL;
-        nfcRecord.mediaType = TEXT_MIME;
-        nfcRecord.data = uri.toString().getBytes();
-        return nfcRecord;
-    }
-
-    /**
-     * Constructs MIME or JSON NfcRecord
-     */
-    private static NfcRecord createMIMERecord(String mediaType, byte[] payload) {
-        NfcRecord nfcRecord = new NfcRecord();
-        if (mediaType.equals(JSON_MIME)) {
-            nfcRecord.recordType = NfcRecordType.JSON;
-        } else {
-            nfcRecord.recordType = NfcRecordType.OPAQUE_RECORD;
-        }
-        nfcRecord.mediaType = mediaType;
-        nfcRecord.data = payload;
-        return nfcRecord;
-    }
-
-    /**
-     * Constructs TEXT NfcRecord
-     */
-    private static NfcRecord createTextRecord(byte[] text) {
-        // Check that text byte array is not empty.
-        if (text.length == 0) {
-            return null;
-        }
-
-        NfcRecord nfcRecord = new NfcRecord();
-        nfcRecord.recordType = NfcRecordType.TEXT;
-        nfcRecord.mediaType = TEXT_MIME;
-        // According to NFCForum-TS-RTD_Text_1.0 specification, section 3.2.1 Syntax.
-        // First byte of the payload is status byte, defined in Table 3: Status Byte Encodings.
-        // 0-5: lang code length
-        // 6  : must be zero
-        // 8  : 0 - text is in UTF-8 encoding, 1 - text is in UTF-16 encoding.
-        int langCodeLength = (text[0] & (byte) 0x3F);
-        int textBodyStartPos = langCodeLength + 1;
-        if (textBodyStartPos > text.length) {
-            return null;
-        }
-        nfcRecord.data = Arrays.copyOfRange(text, textBodyStartPos, text.length);
-        return nfcRecord;
-    }
-
-    /**
-     * Constructs well known type (TEXT or URI) NfcRecord
-     */
-    private static NfcRecord createWellKnownRecord(NdefRecord record) {
-        if (Arrays.equals(record.getType(), NdefRecord.RTD_URI)) {
-            return createURLRecord(record.toUri());
-        }
-
-        if (Arrays.equals(record.getType(), NdefRecord.RTD_TEXT)) {
-            return createTextRecord(record.getPayload());
-        }
-
-        return null;
-    }
-}