4.44 beta

CPP/7zip/Archive/GZip/GZipOut.cpp

@@ -0,0 +1,69 @@
+// Archive/GZipOut.cpp
+
+#include "StdAfx.h"
+
+#include "GZipOut.h"
+#include "Common/CRC.h"
+#include "Windows/Defs.h"
+#include "../../Common/StreamUtils.h"
+
+namespace NArchive {
+namespace NGZip {
+
+HRESULT COutArchive::WriteBytes(const void *buffer, UInt32 size)
+{
+  UInt32 processedSize;
+  RINOK(WriteStream(m_Stream, buffer, size, &processedSize));
+  if(processedSize != size)
+    return E_FAIL;
+  return S_OK;
+}
+
+HRESULT COutArchive::WriteByte(Byte value)
+{
+  return WriteBytes(&value, 1);
+}
+
+HRESULT COutArchive::WriteUInt16(UInt16 value)
+{
+  for (int i = 0; i < 2; i++)
+  {
+    RINOK(WriteByte((Byte)value));
+    value >>= 8;
+  }
+  return S_OK;
+}
+
+HRESULT COutArchive::WriteUInt32(UInt32 value)
+{
+  for (int i = 0; i < 4; i++)
+  {
+    RINOK(WriteByte((Byte)value));
+    value >>= 8;
+  }
+  return S_OK;
+}
+
+HRESULT COutArchive::WriteHeader(const CItem &item)
+{
+  RINOK(WriteUInt16(kSignature));
+  RINOK(WriteByte(item.CompressionMethod));
+  RINOK(WriteByte((Byte)(item.Flags & NFileHeader::NFlags::kNameIsPresent)));
+  RINOK(WriteUInt32(item.Time));
+  RINOK(WriteByte(item.ExtraFlags));
+  RINOK(WriteByte(item.HostOS));
+  if (item.NameIsPresent())
+  {
+    RINOK(WriteBytes((const char *)item.Name, item.Name.Length()));
+    RINOK(WriteByte(0));
+  }
+  return S_OK;
+}
+
+HRESULT COutArchive::WritePostHeader(const CItem &item)
+{
+  RINOK(WriteUInt32(item.FileCRC));
+  return WriteUInt32(item.UnPackSize32);
+}
+
+}}