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d4efd44fb0
git-svn-id: https://zxing.googlecode.com/svn/trunk@1202 59b500cc-1b3d-0410-9834-0bbf25fbcc57
118 lines
3.8 KiB
C#
Executable file
118 lines
3.8 KiB
C#
Executable file
/*
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* Copyright 2008 ZXing authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using System;
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namespace com.google.zxing.client.result.optional
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{
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/// <summary> <p>Represents a record in an NDEF message. This class only supports certain types
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/// of records -- namely, non-chunked records, where ID length is omitted, and only
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/// "short records".</p>
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///
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/// </summary>
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/// <author> Sean Owen
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/// </author>
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/// <author>www.Redivivus.in (suraj.supekar@redivivus.in) - Ported from ZXING Java Source
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/// </author>
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sealed class NDEFRecord
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{
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internal bool MessageBegin
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{
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get
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{
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return (header & 0x80) != 0;
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}
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}
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internal bool MessageEnd
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{
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get
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{
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return (header & 0x40) != 0;
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}
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}
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internal System.String Type
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{
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get
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{
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return type;
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}
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}
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internal sbyte[] Payload
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{
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get
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{
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return payload;
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}
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}
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internal int TotalRecordLength
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{
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get
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{
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return totalRecordLength;
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}
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}
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private const int SUPPORTED_HEADER_MASK = 0x3F; // 0 0 1 1 1 111 (the bottom 6 bits matter)
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private const int SUPPORTED_HEADER = 0x11; // 0 0 0 1 0 001
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public const System.String TEXT_WELL_KNOWN_TYPE = "T";
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public const System.String URI_WELL_KNOWN_TYPE = "U";
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public const System.String SMART_POSTER_WELL_KNOWN_TYPE = "Sp";
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public const System.String ACTION_WELL_KNOWN_TYPE = "act";
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//UPGRADE_NOTE: Final was removed from the declaration of 'header '. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1003'"
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private int header;
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//UPGRADE_NOTE: Final was removed from the declaration of 'type '. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1003'"
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private System.String type;
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//UPGRADE_NOTE: Final was removed from the declaration of 'payload '. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1003'"
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private sbyte[] payload;
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//UPGRADE_NOTE: Final was removed from the declaration of 'totalRecordLength '. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1003'"
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private int totalRecordLength;
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private NDEFRecord(int header, System.String type, sbyte[] payload, int totalRecordLength)
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{
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this.header = header;
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this.type = type;
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this.payload = payload;
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this.totalRecordLength = totalRecordLength;
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}
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internal static NDEFRecord readRecord(sbyte[] bytes, int offset)
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{
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int header = bytes[offset] & 0xFF;
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// Does header match what we support in the bits we care about?
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// XOR figures out where we differ, and if any of those are in the mask, fail
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if (((header ^ SUPPORTED_HEADER) & SUPPORTED_HEADER_MASK) != 0)
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{
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return null;
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}
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int typeLength = bytes[offset + 1] & 0xFF;
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int payloadLength = bytes[offset + 2] & 0xFF;
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System.String type = AbstractNDEFResultParser.bytesToString(bytes, offset + 3, typeLength, "US-ASCII");
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sbyte[] payload = new sbyte[payloadLength];
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Array.Copy(bytes, offset + 3 + typeLength, payload, 0, payloadLength);
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return new NDEFRecord(header, type, payload, 3 + typeLength + payloadLength);
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}
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}
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} |