internal void Read()
{
if (!IsAr(Stream, Diagnostics))
{
return;
}
Span <byte> entryBuffer = stackalloc byte[ArFile.FileEntrySizeInBytes];
_futureHeaders = null;
while (TryReadFileEntry(entryBuffer, out var fileEntry))
{
if (fileEntry is ArLongNamesTable arGnuFutureHeaders)
{
if (_futureHeaders != null)
{
Diagnostics.Error(DiagnosticId.AR_ERR_InvalidDuplicatedFutureHeadersTable, $"Invalid duplicated future headers table found at offset {fileEntry.Offset} while another table was already found at offset {_futureHeaders.Offset}. This file is invalid.");
break;
}
_futureHeaders = arGnuFutureHeaders;
}
else
{
ArArchiveFile.AddFile(fileEntry);
}
}
if (Diagnostics.HasErrors)
{
return;
}
// Perform a pass after all entries have been read
foreach (var arFileEntry in ArArchiveFile.Files)
{
arFileEntry.AfterReadInternal(this.Diagnostics);
}
}
/// <inheritdoc />
public override bool TryUpdateLayout(DiagnosticBag diagnostics)
{
if (diagnostics == null)
{
throw new ArgumentNullException(nameof(diagnostics));
}
// Check first that we have a valid object file
var localDiagnostics = new DiagnosticBag();
Verify(localDiagnostics);
// If we have any any errors
if (localDiagnostics.HasErrors)
{
localDiagnostics.CopyTo(diagnostics);
return(false);
}
if (Kind == ArArchiveKind.GNU)
{
if (LongNamesTable == null)
{
LongNamesTable = new ArLongNamesTable
{
Parent = this
};
}
if (SymbolTable != null && SymbolTable.Index == 0)
{
LongNamesTable.Index = 1;
}
else
{
LongNamesTable.Index = 1;
}
// Reset the calculation of the size of headers
LongNamesTable.SizeKind = ValueKind.Auto;
}
else
{
// Don't use headers
LongNamesTable = null;
}
ulong size = (ulong)Magic.Length;
// Clear the internal names
foreach (var entry in Files)
{
entry.InternalName = null;
}
for (var i = 0; i < Files.Count; i++)
{
var entry = Files[i];
// If we have a GNU headers and they are required, add them to the offset and size
if (LongNamesTable != null && LongNamesTable.Index == i)
{
var headerSize = LongNamesTable.Size;
if (headerSize > 0)
{
LongNamesTable.Offset = size;
size += ArFile.FileEntrySizeInBytes + LongNamesTable.Size;
if ((size & 1) != 0)
{
size++;
}
}
}
entry.Offset = size;
size += ArFile.FileEntrySizeInBytes + entry.Size;
if ((size & 1) != 0)
{
size++;
}
}
return(true);
}
public void UpdateLayout(DiagnosticBag diagnostics)
{
if (diagnostics == null)
{
throw new ArgumentNullException(nameof(diagnostics));
}
Size = 0;
if (Kind == ArArchiveKind.GNU)
{
if (LongNamesTable == null)
{
LongNamesTable = new ArLongNamesTable
{
Parent = this
};
}
if (SymbolTable != null && SymbolTable.Index == 0)
{
LongNamesTable.Index = 1;
}
else
{
LongNamesTable.Index = 1;
}
}
else
{
// Don't use headers
LongNamesTable = null;
}
ulong size = (ulong)Magic.Length;
// Clear the internal names
foreach (var entry in Files)
{
entry.InternalName = null;
}
for (var i = 0; i < Files.Count; i++)
{
var entry = Files[i];
entry.UpdateLayout(diagnostics);
if (diagnostics.HasErrors)
{
return;
}
// If we have a GNU headers and they are required, add them to the offset and size
if (LongNamesTable != null && LongNamesTable.Index == i)
{
LongNamesTable.UpdateLayout(diagnostics);
if (diagnostics.HasErrors)
{
return;
}
var headerSize = LongNamesTable.Size;
if (headerSize > 0)
{
LongNamesTable.Offset = size;
size += ArFile.FileEntrySizeInBytes + LongNamesTable.Size;
if ((size & 1) != 0)
{
size++;
}
}
}
entry.Offset = size;
size += ArFile.FileEntrySizeInBytes + entry.Size;
if ((size & 1) != 0)
{
size++;
}
}
Size = size;
}
