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fix IStreamStack.StackSeek with buffering streams

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This commit is contained in:
Morilli
2025-11-14 01:47:15 +01:00
parent 97f58b412e
commit 9a876abd31
1 changed files with 7 additions and 9 deletions
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16
src/SharpCompress/IO/IStreamStack.cs
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@@ -143,7 +143,6 @@ namespace SharpCompress.IO
var stack = new List<IStreamStack>();
Stream? current = stream as Stream;
int lastBufferingIndex = -1;
int firstSeekableIndex = -1;
Stream? firstSeekableStream = null;
// Traverse the stack, collecting info
@@ -161,7 +160,6 @@ namespace SharpCompress.IO
// Find the first seekable stream (closest to the root)
if (current != null && current.CanSeek)
{
firstSeekableIndex = stack.Count;
firstSeekableStream = current;
}
@@ -169,16 +167,16 @@ namespace SharpCompress.IO
if (lastBufferingIndex != -1)
{
var bufferingStream = stack[lastBufferingIndex];
if (position >= 0 && position < bufferingStream.BufferSize)
var targetBufferPosition = position - bufferingStream.GetPosition() + bufferingStream.BufferPosition;
if (targetBufferPosition >= 0 && targetBufferPosition <= bufferingStream.BufferSize)
{
bufferingStream.BufferPosition = (int)position;
bufferingStream.BufferPosition = (int)targetBufferPosition;
return position;
}
else
{
// If position is not in buffer, reset buffer and proceed as non-buffering
bufferingStream.BufferPosition = 0;
}
// If position is not in buffer, reset buffer and proceed as non-buffering
bufferingStream.BufferPosition = 0;
// Continue to seek as if no buffer is present
}