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author | wolfbeast <mcwerewolf@wolfbeast.com> | 2019-04-05 20:01:10 +0200 |
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committer | wolfbeast <mcwerewolf@wolfbeast.com> | 2019-04-05 20:01:10 +0200 |
commit | c3b63b831cd2c64700e875b28540212c7c881ac6 (patch) | |
tree | edd98fcbd2004d3b562904f822bf6c3322fc7f52 /other-licenses/7zstub/src/CPP/7zip/Common/StreamUtils.cpp | |
parent | d432e068a21c815d5d5e7bcbc1cc8c6e77a7d1e0 (diff) | |
parent | cc07da9cb4d6e7a53f8d953427ffc2bca2e0c2df (diff) | |
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Merge branch 'master' into 816
Diffstat (limited to 'other-licenses/7zstub/src/CPP/7zip/Common/StreamUtils.cpp')
-rw-r--r-- | other-licenses/7zstub/src/CPP/7zip/Common/StreamUtils.cpp | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/CPP/7zip/Common/StreamUtils.cpp b/other-licenses/7zstub/src/CPP/7zip/Common/StreamUtils.cpp new file mode 100644 index 000000000..a79de2352 --- /dev/null +++ b/other-licenses/7zstub/src/CPP/7zip/Common/StreamUtils.cpp @@ -0,0 +1,56 @@ +// StreamUtils.cpp
+
+#include "StdAfx.h"
+
+#include "StreamUtils.h"
+
+static const UInt32 kBlockSize = ((UInt32)1 << 31);
+
+HRESULT ReadStream(ISequentialInStream *stream, void *data, size_t *processedSize) throw()
+{
+ size_t size = *processedSize;
+ *processedSize = 0;
+ while (size != 0)
+ {
+ UInt32 curSize = (size < kBlockSize) ? (UInt32)size : kBlockSize;
+ UInt32 processedSizeLoc;
+ HRESULT res = stream->Read(data, curSize, &processedSizeLoc);
+ *processedSize += processedSizeLoc;
+ data = (void *)((Byte *)data + processedSizeLoc);
+ size -= processedSizeLoc;
+ RINOK(res);
+ if (processedSizeLoc == 0)
+ return S_OK;
+ }
+ return S_OK;
+}
+
+HRESULT ReadStream_FALSE(ISequentialInStream *stream, void *data, size_t size) throw()
+{
+ size_t processedSize = size;
+ RINOK(ReadStream(stream, data, &processedSize));
+ return (size == processedSize) ? S_OK : S_FALSE;
+}
+
+HRESULT ReadStream_FAIL(ISequentialInStream *stream, void *data, size_t size) throw()
+{
+ size_t processedSize = size;
+ RINOK(ReadStream(stream, data, &processedSize));
+ return (size == processedSize) ? S_OK : E_FAIL;
+}
+
+HRESULT WriteStream(ISequentialOutStream *stream, const void *data, size_t size) throw()
+{
+ while (size != 0)
+ {
+ UInt32 curSize = (size < kBlockSize) ? (UInt32)size : kBlockSize;
+ UInt32 processedSizeLoc;
+ HRESULT res = stream->Write(data, curSize, &processedSizeLoc);
+ data = (const void *)((const Byte *)data + processedSizeLoc);
+ size -= processedSizeLoc;
+ RINOK(res);
+ if (processedSizeLoc == 0)
+ return E_FAIL;
+ }
+ return S_OK;
+}
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