niko
72 lines
2.0 KiB
C#
72 lines
2.0 KiB
C#
using System;
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using System.IO;
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namespace Hjg.Pngcs.Chunks
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{
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// Token: 0x02000032 RID: 50
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public class PngChunkZTXT : PngChunkTextVar
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{
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// Token: 0x060001C0 RID: 448 RVA: 0x000076DF File Offset: 0x000058DF
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public PngChunkZTXT(ImageInfo info)
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: base("zTXt", info)
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{
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}
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// Token: 0x060001C1 RID: 449 RVA: 0x000076F0 File Offset: 0x000058F0
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public override ChunkRaw CreateRawChunk()
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{
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if (this.key.Length == 0)
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{
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throw new PngjException("Text chunk key must be non empty");
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}
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MemoryStream memoryStream = new MemoryStream();
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ChunkHelper.WriteBytesToStream(memoryStream, ChunkHelper.ToBytes(this.key));
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memoryStream.WriteByte(0);
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memoryStream.WriteByte(0);
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byte[] array = ChunkHelper.compressBytes(ChunkHelper.ToBytes(this.val), true);
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ChunkHelper.WriteBytesToStream(memoryStream, array);
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byte[] array2 = memoryStream.ToArray();
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ChunkRaw chunkRaw = base.createEmptyChunk(array2.Length, false);
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chunkRaw.Data = array2;
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return chunkRaw;
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}
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// Token: 0x060001C2 RID: 450 RVA: 0x00007770 File Offset: 0x00005970
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public override void ParseFromRaw(ChunkRaw c)
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{
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int num = -1;
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for (int i = 0; i < c.Data.Length; i++)
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{
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if (c.Data[i] == 0)
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{
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num = i;
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break;
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}
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}
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if (num < 0 || num > c.Data.Length - 2)
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{
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throw new PngjException("bad zTXt chunk: no separator found");
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}
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this.key = ChunkHelper.ToString(c.Data, 0, num);
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int num2 = (int)c.Data[num + 1];
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if (num2 != 0)
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{
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throw new PngjException("bad zTXt chunk: unknown compression method");
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}
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byte[] array = ChunkHelper.compressBytes(c.Data, num + 2, c.Data.Length - num - 2, false);
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this.val = ChunkHelper.ToString(array);
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}
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// Token: 0x060001C3 RID: 451 RVA: 0x00007810 File Offset: 0x00005A10
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public override void CloneDataFromRead(PngChunk other)
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{
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PngChunkZTXT pngChunkZTXT = (PngChunkZTXT)other;
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this.key = pngChunkZTXT.key;
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this.val = pngChunkZTXT.val;
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}
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// Token: 0x040000F2 RID: 242
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public const string ID = "zTXt";
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}
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}
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