From 354bb40e75d94466e91fe6960523612c9d17ccfb Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Thu, 2 Nov 2017 23:11:29 +0300
Subject: Add implementation

---
 mysql/extra/yassl/taocrypt/src/file.cpp | 115 ++++++++++++++++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100644 mysql/extra/yassl/taocrypt/src/file.cpp

(limited to 'mysql/extra/yassl/taocrypt/src/file.cpp')

diff --git a/mysql/extra/yassl/taocrypt/src/file.cpp b/mysql/extra/yassl/taocrypt/src/file.cpp
new file mode 100644
index 0000000..7c2044b
--- /dev/null
+++ b/mysql/extra/yassl/taocrypt/src/file.cpp
@@ -0,0 +1,115 @@
+/*
+   Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; see the file COPYING. If not, write to the
+   Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+   MA  02110-1301  USA.
+*/
+
+/* file.cpp implements File Sources and Sinks
+*/
+
+#include "runtime.hpp"
+#include "file.hpp"
+
+
+namespace TaoCrypt {
+
+
+FileSource::FileSource(const char* fname, Source& source)
+{
+    file_ = fopen(fname, "rb");
+    if (file_) get(source);
+}
+
+
+FileSource::~FileSource()
+{
+    if (file_)
+        fclose(file_);
+}
+
+
+
+// return size of source from beginning or current position
+word32 FileSource::size(bool use_current)
+{
+    long current = ftell(file_);
+    long begin   = current;
+
+    if (!use_current) {
+        fseek(file_, 0, SEEK_SET);
+        begin = ftell(file_);
+    }
+
+    fseek(file_, 0, SEEK_END);
+    long end = ftell(file_);
+
+    fseek(file_, current, SEEK_SET);
+
+    return end - begin;
+}
+
+
+word32 FileSource::size_left()
+{
+    return size(true);
+}
+
+
+// fill file source from source
+word32 FileSource::get(Source& source)
+{
+    word32 sz(size());
+    if (source.size() < sz)
+        source.grow(sz);
+
+    size_t bytes = fread(source.buffer_.get_buffer(), 1, sz, file_);
+
+    if (bytes == 1)
+        return sz;
+    else
+        return 0;
+}
+
+
+FileSink::FileSink(const char* fname, Source& source)
+{
+    file_ = fopen(fname, "wb");
+    if (file_) put(source);
+}
+
+
+FileSink::~FileSink()
+{
+    if (file_)
+        fclose(file_);
+}
+
+
+// fill source from file sink
+void FileSink::put(Source& source)
+{
+    fwrite(source.get_buffer(), 1, source.size(), file_);
+}
+
+
+// swap with other and reset to beginning
+void Source::reset(ByteBlock& otherBlock)
+{
+    buffer_.Swap(otherBlock);   
+    current_ = 0;
+}
+
+
+}  // namespace
-- 
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