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manually add wp8 plugins with plugman
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platforms/wp8/Plugins/com.chariotsolutions.nfc.plugin/Ndef.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,191 @@ | ||
| using System.Runtime.Serialization; | ||
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| using System; | ||
| using System.Collections.Generic; | ||
| using System.Linq; | ||
| using System.Text; | ||
| using System.Threading.Tasks; | ||
| using System.IO; | ||
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| using System.Runtime.InteropServices.WindowsRuntime; | ||
| using Windows.Storage.Streams; | ||
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| namespace ChariotSolutions.NFC.NDEF | ||
| { | ||
| public class Ndef | ||
| { | ||
| public static List<NdefRecord> parse(byte[] bytes) | ||
| { | ||
| List<NdefRecord> records = new List<NdefRecord>(); | ||
| int index = 0; | ||
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| while (index <= bytes.Length) | ||
| { | ||
| byte tnf_byte = bytes[index]; | ||
| bool mb = (tnf_byte & 0x80) != 0; | ||
| bool me = (tnf_byte & 0x40) != 0; | ||
| bool cf = (tnf_byte & 0x20) != 0; | ||
| bool sr = (tnf_byte & 0x10) != 0; | ||
| bool il = (tnf_byte & 0x8) != 0; | ||
| int tnf = tnf_byte & 0x7; | ||
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| if (cf) | ||
| { | ||
| // TODO implement me | ||
| throw new IOException("Chunked records are not supported."); | ||
| } | ||
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| index++; | ||
| int typeLength = bytes[index]; | ||
| int idLength = 0; | ||
| int payloadLength = 0; | ||
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| if (sr) | ||
| { | ||
| index++; | ||
| payloadLength = bytes[index]; | ||
| } | ||
| else | ||
| { | ||
| payloadLength = ((0xFF & bytes[++index]) << 24) | | ||
| ((0xFF & bytes[++index]) << 26) | | ||
| ((0xFF & bytes[++index]) << 8) | | ||
| (0xFF & bytes[++index]); | ||
| } | ||
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| if (il) | ||
| { | ||
| index++; | ||
| idLength = bytes[index]; | ||
| } | ||
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| index++; | ||
| IBuffer type = bytes.AsBuffer(index, typeLength); | ||
| index += typeLength; | ||
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| IBuffer id = bytes.AsBuffer(index, idLength); | ||
| index += idLength; | ||
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| IBuffer payload = bytes.AsBuffer(index, payloadLength); | ||
| index += payloadLength; | ||
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| NdefRecord record = new NdefRecord(); | ||
| record.tnf = (byte)tnf; | ||
| record.type = typeLength > 0 ? type.ToArray() : new byte[0]; | ||
| record.id = idLength > 0 ? id.ToArray() : new byte[0]; | ||
| record.payload = payloadLength > 0 ? payload.ToArray() : new byte[0]; | ||
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| records.Add(record); | ||
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| if (me) break; // last message | ||
| } | ||
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| return records; | ||
| } | ||
|
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| public static byte[] toBytes(NdefRecord[] records) | ||
| { | ||
| MemoryStream encoded = new MemoryStream(); | ||
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| for (int i = 0; i < records.Length; i++) | ||
| { | ||
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| bool mb = (i == 0); | ||
| bool me = (i == (records.Length - 1)); | ||
| bool cf = false; // TODO | ||
| bool sr = (records[i].payload.Length < 0xFF); | ||
| bool il = (records[i].id.Length > 0); | ||
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| byte tnf_byte = encodeTnf(mb, me, cf, sr, il, records[i].tnf); | ||
| encoded.WriteByte(tnf_byte); | ||
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| int type_length = records[i].type.Length; | ||
| encoded.WriteByte((byte)type_length); | ||
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| int payload_length = records[i].payload.Length; | ||
| if (sr) | ||
| { | ||
| encoded.WriteByte((byte)payload_length); | ||
| } | ||
| else | ||
| { | ||
| // 4 bytes | ||
| encoded.WriteByte((byte)(payload_length >> 24)); | ||
| encoded.WriteByte((byte)(payload_length >> 16)); | ||
| encoded.WriteByte((byte)(payload_length >> 8)); | ||
| encoded.WriteByte((byte)(payload_length & 0xFF)); | ||
| } | ||
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| int id_length = 0; | ||
| if (il) | ||
| { | ||
| id_length = records[i].id.Length; | ||
| encoded.WriteByte((byte)id_length); | ||
| } | ||
|
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| encoded.Write(records[i].type, 0, type_length); | ||
| if (il) | ||
| { | ||
| encoded.Write(records[i].id, 0, id_length); | ||
| } | ||
|
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| encoded.Write(records[i].payload, 0, payload_length); | ||
| } | ||
| return encoded.ToArray(); | ||
| } | ||
|
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| static byte encodeTnf(bool mb, bool me, bool cf, bool sr, bool il, byte tnf) | ||
| { | ||
| byte value = tnf; | ||
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| if (mb) | ||
| { | ||
| value = (byte)(value | 0x80); | ||
| } | ||
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| if (me) | ||
| { | ||
| value = (byte)(value | 0x40); | ||
| } | ||
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| if (cf) | ||
| { | ||
| value = (byte)(value | 0x20); | ||
| } | ||
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| if (sr) | ||
| { | ||
| value = (byte)(value | 0x10); | ||
| } | ||
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| if (il) | ||
| { | ||
| value = (byte)(value | 0x8); | ||
| } | ||
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| if (cf) // check | ||
| { | ||
| if (!(tnf == 0x06 && !mb && !me && !il)) | ||
| { | ||
| throw new IOException("When cf is true, mb, me and il must be false and tnf must be 0x6"); | ||
| } | ||
| } | ||
|
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| return value; | ||
| } | ||
| } | ||
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| [DataContract] | ||
| public class NdefRecord | ||
| { | ||
| [DataMember] | ||
| public byte tnf { get; set; } | ||
| [DataMember] | ||
| public byte[] type { get; set; } | ||
| [DataMember] | ||
| public byte[] id { get; set; } | ||
| [DataMember] | ||
| public byte[] payload { get; set; } | ||
| } | ||
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| } |
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