diff -r 000000000000 -r 6474c204b198 nsprpub/lib/prstreams/prstrms.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nsprpub/lib/prstreams/prstrms.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,140 @@
+/* -*- 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 */