comparison osx/include/kj/std/iostream.h @ 62:0994c39f1e94

Cap'n Proto v0.6 + build for OSX

+// Copyright (c) 2014 Sandstorm Development Group, Inc. and contributors
+// Licensed under the MIT License:
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+/*
+ * Compatibility layer for stdlib iostream
+ */
+
+#ifndef KJ_STD_IOSTREAM_H_
+#define KJ_STD_IOSTREAM_H_
+
+#if defined(__GNUC__) && !KJ_HEADER_WARNINGS
+#pragma GCC system_header
+#endif
+
+#include "../io.h"
+#include <iostream>
+
+namespace kj {
+namespace std {
+
+class StdOutputStream: public kj::OutputStream {
+
+public:
+  explicit StdOutputStream(::std::ostream& stream) : stream_(stream) {}
+  ~StdOutputStream() noexcept(false) {}
+
+  virtual void write(const void* src, size_t size) override {
+    // Always writes the full size.
+
+    stream_.write((char*)src, size);
+  }
+
+  virtual void write(ArrayPtr<const ArrayPtr<const byte>> pieces) override {
+    // Equivalent to write()ing each byte array in sequence, which is what the
+    // default implementation does. Override if you can do something better,
+    // e.g. use writev() to do the write in a single syscall.
+
+    for (auto piece : pieces) {
+      write(piece.begin(), piece.size());
+    }
+  }
+
+private:
+  ::std::ostream& stream_;
+
+};
+
+class StdInputStream: public kj::InputStream {
+
+public:
+  explicit StdInputStream(::std::istream& stream) : stream_(stream) {}
+  ~StdInputStream() noexcept(false) {}
+
+  virtual size_t tryRead(
+      void* buffer, size_t minBytes, size_t maxBytes) override {
+    // Like read(), but may return fewer than minBytes on EOF.
+
+    stream_.read((char*)buffer, maxBytes);
+    return stream_.gcount();
+  }
+
+private:
+  ::std::istream& stream_;
+
+};
+
+}  // namespace std
+}  // namespace kj
+
+#endif  // KJ_STD_IOSTREAM_H_