public override void ParseFromRaw(ChunkRaw c)
{
int nullsep = -1;
for (int i = 0; i < c.Data.Length; i++) // look for first zero
{
if (c.Data[i] != 0)
{
continue;
}
nullsep = i;
break;
}
if (nullsep < 0 || nullsep > c.Data.Length - 2)
{
throw new PngjException("bad zTXt chunk: no separator found");
}
key = ChunkHelper.ToString(c.Data, 0, nullsep);
int compmet = c.Data[nullsep + 1];
if (compmet != 0)
{
throw new PngjException("bad zTXt chunk: unknown compression method");
}
byte[] uncomp = ChunkHelper.compressBytes(c.Data, nullsep + 2, c.Data.Length - nullsep - 2, false); // uncompress
val = ChunkHelper.ToString(uncomp);
}
internal static PngChunk Factory(ChunkRaw chunk, ImageInfo info)
{
PngChunk pngChunk = FactoryFromId(ChunkHelper.ToString(chunk.IdBytes), info);
pngChunk.Length = chunk.Length;
pngChunk.ParseFromRaw(chunk);
return(pngChunk);
}
internal static AbstractPngChunk Factory(ChunkRaw chunk, ImageInfo info)
{
var c = FactoryFromId(ChunkHelper.ToString(chunk.IdBytes), info);
c.Length = chunk.Len;
c.ParseFromRaw(chunk);
return(c);
}
public override void ParseFromRaw(ChunkRaw c)
{
if (c is null)
{
throw new System.ArgumentNullException(nameof(c));
}
var nullsFound = 0;
var nullsIdx = new int[3];
for (var k = 0; k < c.Data.Length; k++)
{
if (c.Data[k] != 0)
{
continue;
}
nullsIdx[nullsFound] = k;
nullsFound++;
if (nullsFound == 1)
{
k += 2;
}
if (nullsFound == 3)
{
break;
}
}
if (nullsFound != 3)
{
throw new PngjException("Bad formed PngChunkITXT chunk");
}
Key = ChunkHelper.ToString(c.Data, 0, nullsIdx[0]);
var i = nullsIdx[0] + 1;
compressed = c.Data[i] != 0;
i++;
if (compressed && c.Data[i] != 0)
{
throw new PngjException("Bad formed PngChunkITXT chunk - bad compression method ");
}
langTag = ChunkHelper.ToString(c.Data, i, nullsIdx[1] - i);
translatedTag = ChunkHelper.ToStringUTF8(c.Data, nullsIdx[1] + 1, nullsIdx[2] - nullsIdx[1] - 1);
i = nullsIdx[2] + 1;
if (compressed)
{
var bytes = ChunkHelper.CompressBytes(c.Data, i, c.Data.Length - i, false);
Val = ChunkHelper.ToStringUTF8(bytes);
}
else
{
Val = ChunkHelper.ToStringUTF8(c.Data, i, c.Data.Length - i);
}
}
public override void ParseFromRaw(ChunkRaw c)
{
int num = -1;
for (int i = 0; i < c.Data.Length; i++)
{
if (c.Data[i] == 0)
{
num = i;
break;
}
}
if (num <= 0 || num > c.Data.Length - 2)
{
throw new PngjException("bad sPLT chunk: no separator found");
}
PalName = ChunkHelper.ToString(c.Data, 0, num);
SampleDepth = PngHelperInternal.ReadInt1fromByte(c.Data, num + 1);
num += 2;
int num2 = (c.Data.Length - num) / ((SampleDepth == 8) ? 6 : 10);
Palette = new int[num2 * 5];
int num3 = 0;
for (int j = 0; j < num2; j++)
{
int num4;
int num5;
int num6;
int num7;
if (SampleDepth == 8)
{
num4 = PngHelperInternal.ReadInt1fromByte(c.Data, num++);
num5 = PngHelperInternal.ReadInt1fromByte(c.Data, num++);
num6 = PngHelperInternal.ReadInt1fromByte(c.Data, num++);
num7 = PngHelperInternal.ReadInt1fromByte(c.Data, num++);
}
else
{
num4 = PngHelperInternal.ReadInt2fromBytes(c.Data, num);
num += 2;
num5 = PngHelperInternal.ReadInt2fromBytes(c.Data, num);
num += 2;
num6 = PngHelperInternal.ReadInt2fromBytes(c.Data, num);
num += 2;
num7 = PngHelperInternal.ReadInt2fromBytes(c.Data, num);
num += 2;
}
int num8 = PngHelperInternal.ReadInt2fromBytes(c.Data, num);
num += 2;
Palette[num3++] = num4;
Palette[num3++] = num5;
Palette[num3++] = num6;
Palette[num3++] = num7;
Palette[num3++] = num8;
}
}
public override void ParseFromRaw(ChunkRaw c)
{
int t = -1;
for (int i = 0; i < c.Data.Length; i++)
{ // look for first zero
if (c.Data[i] == 0)
{
t = i;
break;
}
}
if (t <= 0 || t > c.Data.Length - 2)
{
throw new PngjException("bad sPLT chunk: no separator found");
}
PalName = ChunkHelper.ToString(c.Data, 0, t);
SampleDepth = PngHelperInternal.ReadInt1fromByte(c.Data, t + 1);
t += 2;
int nentries = (c.Data.Length - t) / (SampleDepth == 8 ? 6 : 10);
Palette = new int[nentries * 5];
int r, g, b, a, f, ne;
ne = 0;
for (int i = 0; i < nentries; i++)
{
if (SampleDepth == 8)
{
r = PngHelperInternal.ReadInt1fromByte(c.Data, t++);
g = PngHelperInternal.ReadInt1fromByte(c.Data, t++);
b = PngHelperInternal.ReadInt1fromByte(c.Data, t++);
a = PngHelperInternal.ReadInt1fromByte(c.Data, t++);
}
else
{
r = PngHelperInternal.ReadInt2fromBytes(c.Data, t);
t += 2;
g = PngHelperInternal.ReadInt2fromBytes(c.Data, t);
t += 2;
b = PngHelperInternal.ReadInt2fromBytes(c.Data, t);
t += 2;
a = PngHelperInternal.ReadInt2fromBytes(c.Data, t);
t += 2;
}
f = PngHelperInternal.ReadInt2fromBytes(c.Data, t);
t += 2;
Palette[ne++] = r;
Palette[ne++] = g;
Palette[ne++] = b;
Palette[ne++] = a;
Palette[ne++] = f;
}
}
internal void WriteChunk(Stream os)
{
if (IdBytes.Length != 4)
{
throw new PngjOutputException("bad chunkid [" + ChunkHelper.ToString(IdBytes) + "]");
}
crcval = ComputeCrc();
PngHelperInternal.WriteInt4(os, Length);
PngHelperInternal.WriteBytes(os, IdBytes);
if (Length > 0)
{
PngHelperInternal.WriteBytes(os, Data, 0, Length);
}
PngHelperInternal.WriteInt4(os, crcval);
}
public override void ParseFromRaw(ChunkRaw c)
{
int nullsFound = 0;
int[] nullsIdx = new int[3];
for (int k = 0; k < c.Data.Length; k++)
{
if (c.Data[k] != 0)
{
continue;
}
nullsIdx[nullsFound] = k;
nullsFound++;
if (nullsFound == 1)
{
k += 2;
}
if (nullsFound == 3)
{
break;
}
}
if (nullsFound != 3)
{
throw new PngjException("Bad formed PngChunkITXT chunk");
}
key = ChunkHelper.ToString(c.Data, 0, nullsIdx[0]);
int i = nullsIdx[0] + 1;
compressed = c.Data[i] == 0 ? false : true;
i++;
if (compressed && c.Data[i] != 0)
{
throw new PngjException("Bad formed PngChunkITXT chunk - bad compression method ");
}
langTag = ChunkHelper.ToString(c.Data, i, nullsIdx[1] - i);
translatedTag = ChunkHelper.ToStringUTF8(c.Data, nullsIdx[1] + 1, nullsIdx[2] - nullsIdx[1] - 1);
i = nullsIdx[2] + 1;
if (compressed)
{
byte[] bytes = ChunkHelper.compressBytes(c.Data, i, c.Data.Length - i, false);
val = ChunkHelper.ToStringUTF8(bytes);
}
else
{
val = ChunkHelper.ToStringUTF8(c.Data, i, c.Data.Length - i);
}
}
public override void ParseFromRaw(ChunkRaw c)
{
int num = 0;
int[] array = new int[3];
for (int i = 0; i < c.Data.Length; i++)
{
if (c.Data[i] == 0)
{
array[num] = i;
num++;
if (num == 1)
{
i += 2;
}
if (num == 3)
{
break;
}
}
}
if (num != 3)
{
throw new PngjException("Bad formed PngChunkITXT chunk");
}
key = ChunkHelper.ToString(c.Data, 0, array[0]);
int num2 = array[0] + 1;
compressed = ((c.Data[num2] != 0) ? true : false);
num2++;
if (compressed && c.Data[num2] != 0)
{
throw new PngjException("Bad formed PngChunkITXT chunk - bad compression method ");
}
langTag = ChunkHelper.ToString(c.Data, num2, array[1] - num2);
translatedTag = ChunkHelper.ToStringUTF8(c.Data, array[1] + 1, array[2] - array[1] - 1);
num2 = array[2] + 1;
if (compressed)
{
byte[] x = ChunkHelper.compressBytes(c.Data, num2, c.Data.Length - num2, compress: false);
val = ChunkHelper.ToStringUTF8(x);
}
else
{
val = ChunkHelper.ToStringUTF8(c.Data, num2, c.Data.Length - num2);
}
}
internal void WriteChunk(Stream os)
{
if (IdBytes.Length != 4)
{
throw new PngjOutputException("bad chunkid [" + ChunkHelper.ToString(IdBytes) + "]");
}
crcval = ComputeCrc();
PngHelperInternal.WriteInt4(os, Len);
PngHelperInternal.WriteBytes(os, IdBytes);
if (Len > 0)
{
PngHelperInternal.WriteBytes(os, Data, 0, Len);
}
//Console.WriteLine("writing chunk " + this.ToString() + "crc=" + crcval);
PngHelperInternal.WriteInt4(os, crcval);
}
public override void ParseFromRaw(ChunkRaw c)
{
if (c is null)
{
throw new ArgumentNullException(nameof(c));
}
var nullsep = -1;
for (var i = 0; i < c.Data.Length; i++)
{ // look for first zero
if (c.Data[i] != 0)
{
continue;
}
nullsep = i;
break;
}
if (nullsep < 0 || nullsep > c.Data.Length - 2)
{
throw new PngjException("bad zTXt chunk: no separator found");
}
Key = ChunkHelper.ToString(c.Data, 0, nullsep);
var compmet = (int)c.Data[nullsep + 1];
if (compmet != 0)
{
throw new PngjException("bad zTXt chunk: unknown compression method");
}
var uncomp = ChunkHelper.CompressBytes(c.Data, nullsep + 2, c.Data.Length - nullsep - 2, false); // uncompress
Val = ChunkHelper.ToString(uncomp);
}
public override void ParseFromRaw(ChunkRaw c)
{
int num = -1;
for (int i = 0; i < c.Data.Length; i++)
{
if (c.Data[i] == 0)
{
num = i;
break;
}
}
if (num < 0 || num > c.Data.Length - 2)
{
throw new PngjException("bad zTXt chunk: no separator found");
}
key = ChunkHelper.ToString(c.Data, 0, num);
if (c.Data[num + 1] != 0)
{
throw new PngjException("bad zTXt chunk: unknown compression method");
}
byte[] x = ChunkHelper.compressBytes(c.Data, num + 2, c.Data.Length - num - 2, compress: false);
val = ChunkHelper.ToString(x);
}
internal ChunkRaw(int length, byte[] idbytes, bool alloc) : this(length, ChunkHelper.ToString(idbytes), alloc)
{
}
/// <summary>
/// Just id and length
/// </summary>
/// <returns></returns>
public override String ToString()
{
return("chunkid=" + ChunkHelper.ToString(IdBytes) + " len=" + Len);
}
public string GetProfileAsString()
{
return(ChunkHelper.ToString(GetProfile()));
}
/// <summary>
/// Just id and length
/// </summary>
/// <returns></returns>
public override string ToString()
{
return("chunkid=" + ChunkHelper.ToString(IdBytes) + " len=" + Len.ToString(CultureInfo.InvariantCulture));
}
