diff --git a/include/ndnboost/iostreams/filter/line.hpp b/include/ndnboost/iostreams/filter/line.hpp
new file mode 100644
index 0000000..d8399b3
--- /dev/null
+++ b/include/ndnboost/iostreams/filter/line.hpp
@@ -0,0 +1,227 @@
+// (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
+// (C) Copyright 2005-2007 Jonathan Turkanis
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
+
+// See http://www.boost.org/libs/iostreams for documentation.
+
+#ifndef NDNBOOST_IOSTREAMS_LINE_FILTER_HPP_INCLUDED
+#define NDNBOOST_IOSTREAMS_LINE_FILTER_HPP_INCLUDED
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+#include <algorithm>                               // min.
+#include <ndnboost/assert.hpp>
+#include <memory>                                  // allocator.
+#include <string>
+#include <ndnboost/config.hpp>                        // NDNBOOST_STATIC_CONSTANT.
+#include <ndnboost/iostreams/categories.hpp>
+#include <ndnboost/iostreams/checked_operations.hpp>
+#include <ndnboost/iostreams/detail/ios.hpp>          // openmode, streamsize.
+#include <ndnboost/iostreams/read.hpp>                // check_eof 
+#include <ndnboost/iostreams/pipeline.hpp>
+#include <ndnboost/iostreams/write.hpp>
+
+// Must come last.
+#include <ndnboost/iostreams/detail/config/disable_warnings.hpp> // VC7.1 C4244.
+
+namespace ndnboost { namespace iostreams {
+
+//
+// Template name: line_filter.
+// Template parameters:
+//      Ch - The character type.
+//      Alloc - The allocator type.
+// Description: Filter which processes data one line at a time.
+//
+template< typename Ch,
+          typename Alloc =
+          #if NDNBOOST_WORKAROUND(__GNUC__, < 3)
+              typename std::basic_string<Ch>::allocator_type
+          #else
+              std::allocator<Ch>
+          #endif
+          >
+class basic_line_filter {
+private:
+    typedef typename std::basic_string<Ch>::traits_type  string_traits;
+public:
+    typedef Ch                                           char_type;
+    typedef char_traits<char_type>                       traits_type;
+    typedef std::basic_string<
+                Ch,
+                string_traits,
+                Alloc
+            >                                            string_type;
+    struct category
+        : dual_use,
+          filter_tag,
+          multichar_tag,
+          closable_tag
+        { };
+protected:
+    basic_line_filter(bool suppress_newlines = false) 
+        : pos_(string_type::npos), 
+          flags_(suppress_newlines ? f_suppress : 0) 
+        { }
+public:
+    virtual ~basic_line_filter() { }
+
+    template<typename Source>
+    std::streamsize read(Source& src, char_type* s, std::streamsize n)
+    {
+        using namespace std;
+        NDNBOOST_ASSERT(!(flags_ & f_write));
+        flags_ |= f_read;
+
+        // Handle unfinished business.
+        std::streamsize result = 0;
+        if (!cur_line_.empty() && (result = read_line(s, n)) == n)
+            return n;
+
+        typename traits_type::int_type status = traits_type::good();
+        while (result < n && !traits_type::is_eof(status)) {
+
+            // Call next_line() to retrieve a line of filtered text, and
+            // read_line() to copy it into buffer s.
+            if (traits_type::would_block(status = next_line(src)))
+                return result;
+            result += read_line(s + result, n - result);
+        }
+
+        return detail::check_eof(result);
+    }
+
+    template<typename Sink>
+    std::streamsize write(Sink& snk, const char_type* s, std::streamsize n)
+    {
+        using namespace std;
+        NDNBOOST_ASSERT(!(flags_ & f_read));
+        flags_ |= f_write;
+
+        // Handle unfinished business.
+        if (pos_ != string_type::npos && !write_line(snk))
+            return 0;
+
+        const char_type *cur = s, *next;
+        while (true) {
+
+            // Search for the next full line in [cur, s + n), filter it
+            // and write it to snk.
+            typename string_type::size_type rest = n - (cur - s);
+            if ((next = traits_type::find(cur, rest, traits_type::newline()))) {
+                cur_line_.append(cur, next - cur);
+                cur = next + 1;
+                if (!write_line(snk))
+                    return static_cast<std::streamsize>(cur - s);
+            } else {
+                cur_line_.append(cur, rest);
+                return n;
+            }
+        }
+    }
+
+    template<typename Sink>
+    void close(Sink& snk, NDNBOOST_IOS::openmode which)
+    {
+        if ((flags_ & f_read) && which == NDNBOOST_IOS::in)
+            close_impl();
+
+        if ((flags_ & f_write) && which == NDNBOOST_IOS::out) {
+            try {
+                if (!cur_line_.empty())
+                    write_line(snk);
+            } catch (...) {
+                try {
+                    close_impl();
+                } catch (...) { }
+                throw;
+            }
+            close_impl();
+        }
+    }
+private:
+    virtual string_type do_filter(const string_type& line) = 0;
+
+    // Copies filtered characters fron the current line into
+    // the given buffer.
+    std::streamsize read_line(char_type* s, std::streamsize n)
+    {
+        using namespace std;
+        std::streamsize result =
+            (std::min) (n, static_cast<std::streamsize>(cur_line_.size()));
+        traits_type::copy(s, cur_line_.data(), result);
+        cur_line_.erase(0, result);
+        return result;
+    }
+
+    // Attempts to retrieve a line of text from the given source; returns
+    // an int_type as a good/eof/would_block status code.
+    template<typename Source>
+    typename traits_type::int_type next_line(Source& src)
+    {
+        using namespace std;
+        typename traits_type::int_type c;
+        while ( traits_type::is_good(c = iostreams::get(src)) &&
+                c != traits_type::newline() )
+        {
+            cur_line_ += traits_type::to_int_type(c);
+        }
+        if (!traits_type::would_block(c)) {
+            if (!cur_line_.empty() || c == traits_type::newline())
+                cur_line_ = do_filter(cur_line_);
+            if (c == traits_type::newline() && (flags_ & f_suppress) == 0)
+                cur_line_ += c;
+        }
+        return c; // status indicator.
+    }
+
+    // Filters the current line and attemps to write it to the given sink.
+    // Returns true for success.
+    template<typename Sink>
+    bool write_line(Sink& snk)
+    {
+        string_type line = do_filter(cur_line_);
+        if ((flags_ & f_suppress) == 0)
+            line += traits_type::newline();
+        std::streamsize amt = static_cast<std::streamsize>(line.size());
+        bool result = iostreams::write_if(snk, line.data(), amt) == amt;
+        if (result)
+            clear();
+        return result;
+    }
+
+    void close_impl()
+    {
+        clear();
+        flags_ &= f_suppress;
+    }
+
+    void clear()
+    {
+        cur_line_.erase();
+        pos_ = string_type::npos;
+    }
+
+    enum flag_type {
+        f_read      = 1,
+        f_write     = f_read << 1,
+        f_suppress  = f_write << 1
+    };
+
+    string_type                      cur_line_;
+    typename string_type::size_type  pos_;
+    int                              flags_;
+};
+NDNBOOST_IOSTREAMS_PIPABLE(basic_line_filter, 2)
+
+typedef basic_line_filter<char>     line_filter;
+typedef basic_line_filter<wchar_t>  wline_filter;
+
+} } // End namespaces iostreams, boost.
+
+#include <ndnboost/iostreams/detail/config/enable_warnings.hpp>
+
+#endif // #ifndef NDNBOOST_IOSTREAMS_LINE_FILTER_HPP_INCLUDED