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diff --git a/nsprpub/lib/prstreams/prstrms.h b/nsprpub/lib/prstreams/prstrms.h
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * Robin J. Maxwell 11-22-96
+ * Fredrik Roubert <roubert@google.com> 2010-07-23
+ * Matt Austern <austern@google.com> 2010-07-23
+ */
+
+#ifndef _PRSTRMS_H
+#define _PRSTRMS_H
+
+#include <cstddef>
+#include <istream>
+#include <ostream>
+#include <streambuf>
+
+#include "prio.h"
+
+#ifdef _MSC_VER
+// http://support.microsoft.com/kb/q168958/
+class PR_IMPLEMENT(std::_Mutex);
+class PR_IMPLEMENT(std::ios_base);
+#endif
+
+
+class PR_IMPLEMENT(PRfilebuf): public std::streambuf
+{
+public:
+ PRfilebuf();
+ PRfilebuf(PRFileDesc *fd);
+ PRfilebuf(PRFileDesc *fd, char_type *ptr, std::streamsize len);
+ virtual ~PRfilebuf();
+
+ bool is_open() const { return _fd != NULL; }
+
+ PRfilebuf *open(
+ const char *name,
+ std::ios_base::openmode flags,
+ PRIntn mode);
+ PRfilebuf *attach(PRFileDesc *fd);
+ PRfilebuf *close();
+
+protected:
+ virtual std::streambuf *setbuf(char_type *ptr, std::streamsize len);
+ virtual pos_type seekoff(
+ off_type offset,
+ std::ios_base::seekdir dir,
+ std::ios_base::openmode flags);
+ virtual pos_type seekpos(
+ pos_type pos,
+ std::ios_base::openmode flags) {
+ return seekoff(pos, std::ios_base::beg, flags);
+ }
+ virtual int sync();
+ virtual int_type underflow();
+ virtual int_type overflow(int_type c = traits_type::eof());
+
+ // TODO: Override pbackfail(), showmanyc(), uflow(), xsgetn(), and xsputn().
+
+private:
+ bool allocate();
+ void setb(char_type *buf_base, char_type *buf_end, bool user_buf);
+
+ PRFileDesc *_fd;
+ bool _opened;
+ bool _allocated;
+ bool _unbuffered;
+ bool _user_buf;
+ char_type *_buf_base;
+ char_type *_buf_end;
+};
+
+
+class PR_IMPLEMENT(PRifstream): public std::istream
+{
+public:
+ PRifstream();
+ PRifstream(PRFileDesc *fd);
+ PRifstream(PRFileDesc *fd, char_type *ptr, std::streamsize len);
+ PRifstream(const char *name, openmode flags = in, PRIntn mode = 0);
+ virtual ~PRifstream();
+
+ PRfilebuf *rdbuf() const { return &_filebuf; }
+ bool is_open() const { return _filebuf.is_open(); }
+
+ void open(const char *name, openmode flags = in, PRIntn mode = 0);
+ void attach(PRFileDesc *fd);
+ void close();
+
+private:
+ mutable PRfilebuf _filebuf;
+};
+
+
+class PR_IMPLEMENT(PRofstream): public std::ostream
+{
+public:
+ PRofstream();
+ PRofstream(PRFileDesc *fd);
+ PRofstream(PRFileDesc *fd, char_type *ptr, std::streamsize len);
+ PRofstream(const char *name, openmode flags = out, PRIntn mode = 0);
+ virtual ~PRofstream();
+
+ PRfilebuf *rdbuf() const { return &_filebuf; }
+ bool is_open() const { return _filebuf.is_open(); }
+
+ void open(const char *name, openmode flags = out, PRIntn mode = 0);
+ void attach(PRFileDesc *fd);
+ void close();
+
+private:
+ mutable PRfilebuf _filebuf;
+};
+
+
+class PR_IMPLEMENT(PRfstream): public std::iostream
+{
+public:
+ PRfstream();
+ PRfstream(PRFileDesc *fd);
+ PRfstream(PRFileDesc *fd, char_type *ptr, std::streamsize len);
+ PRfstream(const char *name, openmode flags = in | out, PRIntn mode = 0);
+ virtual ~PRfstream();
+
+ PRfilebuf *rdbuf() const { return &_filebuf; }
+ bool is_open() const { return _filebuf.is_open(); }
+
+ void open(const char *name, openmode flags = in | out, PRIntn mode = 0);
+ void attach(PRFileDesc *fd);
+ void close();
+
+private:
+ mutable PRfilebuf _filebuf;
+};
+
+
+#endif /* _PRSTRMS_H */