diff --git a/include/ndnboost/regex/v4/cregex.hpp b/include/ndnboost/regex/v4/cregex.hpp
new file mode 100644
index 0000000..bfe61f0
--- /dev/null
+++ b/include/ndnboost/regex/v4/cregex.hpp
@@ -0,0 +1,330 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * John Maddock
+ *
+ * Use, modification and distribution are subject to 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)
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         cregex.cpp
+  *   VERSION      see <ndnboost/version.hpp>
+  *   DESCRIPTION: Declares POSIX API functions
+  *                + ndnboost::RegEx high level wrapper.
+  */
+
+#ifndef NDNBOOST_RE_CREGEX_HPP_INCLUDED
+#define NDNBOOST_RE_CREGEX_HPP_INCLUDED
+
+#ifndef NDNBOOST_REGEX_CONFIG_HPP
+#include <ndnboost/regex/config.hpp>
+#endif
+#include <ndnboost/regex/v4/match_flags.hpp>
+#include <ndnboost/regex/v4/error_type.hpp>
+
+#ifdef __cplusplus
+#include <cstddef>
+#else
+#include <stddef.h>
+#endif
+
+#ifdef NDNBOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef NDNBOOST_HAS_ABI_HEADERS
+#  include NDNBOOST_ABI_PREFIX
+#endif
+#ifdef NDNBOOST_MSVC
+#pragma warning(pop)
+#endif
+
+/* include these defs only for POSIX compatablity */
+#ifdef __cplusplus
+namespace ndnboost{
+extern "C" {
+#endif
+
+#if defined(__cplusplus) && !defined(NDNBOOST_NO_STDC_NAMESPACE)
+typedef std::ptrdiff_t regoff_t;
+typedef std::size_t regsize_t;
+#else
+typedef ptrdiff_t regoff_t;
+typedef size_t regsize_t;
+#endif
+
+typedef struct
+{
+   unsigned int re_magic;
+#ifdef __cplusplus
+   std::size_t  re_nsub;      /* number of parenthesized subexpressions */
+#else
+   size_t re_nsub; 
+#endif
+   const char*  re_endp;       /* end pointer for REG_PEND */
+   void* guts;                /* none of your business :-) */
+   match_flag_type eflags;        /* none of your business :-) */
+} regex_tA;
+
+#ifndef NDNBOOST_NO_WREGEX
+typedef struct
+{
+   unsigned int re_magic;
+#ifdef __cplusplus
+   std::size_t  re_nsub;         /* number of parenthesized subexpressions */
+#else
+   size_t re_nsub;
+#endif
+   const wchar_t* re_endp;       /* end pointer for REG_PEND */
+   void* guts;                   /* none of your business :-) */
+   match_flag_type eflags;           /* none of your business :-) */
+} regex_tW;
+#endif
+
+typedef struct
+{
+   regoff_t rm_so;      /* start of match */
+   regoff_t rm_eo;      /* end of match */
+} regmatch_t;
+
+/* regcomp() flags */
+typedef enum{
+   REG_BASIC = 0000,
+   REG_EXTENDED = 0001,
+   REG_ICASE = 0002,
+   REG_NOSUB = 0004,
+   REG_NEWLINE = 0010,
+   REG_NOSPEC = 0020,
+   REG_PEND = 0040,
+   REG_DUMP = 0200,
+   REG_NOCOLLATE = 0400,
+   REG_ESCAPE_IN_LISTS = 01000,
+   REG_NEWLINE_ALT = 02000,
+   REG_PERLEX = 04000,
+
+   REG_PERL = REG_EXTENDED | REG_NOCOLLATE | REG_ESCAPE_IN_LISTS | REG_PERLEX,
+   REG_AWK = REG_EXTENDED | REG_ESCAPE_IN_LISTS,
+   REG_GREP = REG_BASIC | REG_NEWLINE_ALT,
+   REG_EGREP = REG_EXTENDED | REG_NEWLINE_ALT,
+
+   REG_ASSERT = 15,
+   REG_INVARG = 16,
+   REG_ATOI = 255,   /* convert name to number (!) */
+   REG_ITOA = 0400   /* convert number to name (!) */
+} reg_comp_flags;
+
+/* regexec() flags */
+typedef enum{
+   REG_NOTBOL =    00001,
+   REG_NOTEOL =    00002,
+   REG_STARTEND =  00004
+} reg_exec_flags;
+
+/*
+ * POSIX error codes:
+ */
+typedef unsigned reg_error_t;
+typedef reg_error_t reg_errcode_t;  /* backwards compatibility */
+
+static const reg_error_t REG_NOERROR = 0;   /* Success.  */
+static const reg_error_t REG_NOMATCH = 1;   /* Didn't find a match (for regexec).  */
+
+  /* POSIX regcomp return error codes.  (In the order listed in the
+     standard.)  */
+static const reg_error_t REG_BADPAT = 2;    /* Invalid pattern.  */
+static const reg_error_t REG_ECOLLATE = 3;  /* Undefined collating element.  */
+static const reg_error_t REG_ECTYPE = 4;    /* Invalid character class name.  */
+static const reg_error_t REG_EESCAPE = 5;   /* Trailing backslash.  */
+static const reg_error_t REG_ESUBREG = 6;   /* Invalid back reference.  */
+static const reg_error_t REG_EBRACK = 7;    /* Unmatched left bracket.  */
+static const reg_error_t REG_EPAREN = 8;    /* Parenthesis imbalance.  */
+static const reg_error_t REG_EBRACE = 9;    /* Unmatched \{.  */
+static const reg_error_t REG_BADBR = 10;    /* Invalid contents of \{\}.  */
+static const reg_error_t REG_ERANGE = 11;   /* Invalid range end.  */
+static const reg_error_t REG_ESPACE = 12;   /* Ran out of memory.  */
+static const reg_error_t REG_BADRPT = 13;   /* No preceding re for repetition op.  */
+static const reg_error_t REG_EEND = 14;     /* unexpected end of expression */
+static const reg_error_t REG_ESIZE = 15;    /* expression too big */
+static const reg_error_t REG_ERPAREN = 8;   /* = REG_EPAREN : unmatched right parenthesis */
+static const reg_error_t REG_EMPTY = 17;    /* empty expression */
+static const reg_error_t REG_E_MEMORY = 15; /* = REG_ESIZE : out of memory */
+static const reg_error_t REG_ECOMPLEXITY = 18; /* complexity too high */
+static const reg_error_t REG_ESTACK = 19;   /* out of stack space */
+static const reg_error_t REG_E_PERL = 20;   /* Perl (?...) error */
+static const reg_error_t REG_E_UNKNOWN = 21; /* unknown error */
+static const reg_error_t REG_ENOSYS = 21;   /* = REG_E_UNKNOWN : Reserved. */
+
+NDNBOOST_REGEX_DECL int NDNBOOST_REGEX_CCALL regcompA(regex_tA*, const char*, int);
+NDNBOOST_REGEX_DECL regsize_t NDNBOOST_REGEX_CCALL regerrorA(int, const regex_tA*, char*, regsize_t);
+NDNBOOST_REGEX_DECL int NDNBOOST_REGEX_CCALL regexecA(const regex_tA*, const char*, regsize_t, regmatch_t*, int);
+NDNBOOST_REGEX_DECL void NDNBOOST_REGEX_CCALL regfreeA(regex_tA*);
+
+#ifndef NDNBOOST_NO_WREGEX
+NDNBOOST_REGEX_DECL int NDNBOOST_REGEX_CCALL regcompW(regex_tW*, const wchar_t*, int);
+NDNBOOST_REGEX_DECL regsize_t NDNBOOST_REGEX_CCALL regerrorW(int, const regex_tW*, wchar_t*, regsize_t);
+NDNBOOST_REGEX_DECL int NDNBOOST_REGEX_CCALL regexecW(const regex_tW*, const wchar_t*, regsize_t, regmatch_t*, int);
+NDNBOOST_REGEX_DECL void NDNBOOST_REGEX_CCALL regfreeW(regex_tW*);
+#endif
+
+#ifdef UNICODE
+#define regcomp regcompW
+#define regerror regerrorW
+#define regexec regexecW
+#define regfree regfreeW
+#define regex_t regex_tW
+#else
+#define regcomp regcompA
+#define regerror regerrorA
+#define regexec regexecA
+#define regfree regfreeA
+#define regex_t regex_tA
+#endif
+
+#ifdef NDNBOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef NDNBOOST_HAS_ABI_HEADERS
+#  include NDNBOOST_ABI_SUFFIX
+#endif
+#ifdef NDNBOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#ifdef __cplusplus
+} /* extern "C" */
+} /* namespace */
+#endif
+
+#if defined(__cplusplus)
+/*
+ * C++ high level wrapper goes here:
+ */
+#include <string>
+#include <vector>
+namespace ndnboost{
+
+#ifdef NDNBOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef NDNBOOST_HAS_ABI_HEADERS
+#  include NDNBOOST_ABI_PREFIX
+#endif
+#ifdef NDNBOOST_MSVC
+#pragma warning(pop)
+#endif
+
+class RegEx;
+
+namespace re_detail{
+
+class RegExData;
+struct pred1;
+struct pred2;
+struct pred3;
+struct pred4;
+
+}  /* namespace re_detail */
+
+#if (defined(NDNBOOST_MSVC) || defined(__BORLANDC__)) && !defined(NDNBOOST_DISABLE_WIN32)
+typedef bool (__cdecl *GrepCallback)(const RegEx& expression);
+typedef bool (__cdecl *GrepFileCallback)(const char* file, const RegEx& expression);
+typedef bool (__cdecl *FindFilesCallback)(const char* file);
+#else
+typedef bool (*GrepCallback)(const RegEx& expression);
+typedef bool (*GrepFileCallback)(const char* file, const RegEx& expression);
+typedef bool (*FindFilesCallback)(const char* file);
+#endif
+
+class NDNBOOST_REGEX_DECL RegEx
+{
+private:
+   re_detail::RegExData* pdata;
+public:
+   RegEx();
+   RegEx(const RegEx& o);
+   ~RegEx();
+   explicit RegEx(const char* c, bool icase = false);
+   explicit RegEx(const std::string& s, bool icase = false);
+   RegEx& operator=(const RegEx& o);
+   RegEx& operator=(const char* p);
+   RegEx& operator=(const std::string& s){ return this->operator=(s.c_str()); }
+   unsigned int SetExpression(const char* p, bool icase = false);
+   unsigned int SetExpression(const std::string& s, bool icase = false){ return SetExpression(s.c_str(), icase); }
+   std::string Expression()const;
+   unsigned int error_code()const;
+   /*
+    * now matching operators:
+    */
+   bool Match(const char* p, match_flag_type flags = match_default);
+   bool Match(const std::string& s, match_flag_type flags = match_default) { return Match(s.c_str(), flags); }
+   bool Search(const char* p, match_flag_type flags = match_default);
+   bool Search(const std::string& s, match_flag_type flags = match_default) { return Search(s.c_str(), flags); }
+   unsigned int Grep(GrepCallback cb, const char* p, match_flag_type flags = match_default);
+   unsigned int Grep(GrepCallback cb, const std::string& s, match_flag_type flags = match_default) { return Grep(cb, s.c_str(), flags); }
+   unsigned int Grep(std::vector<std::string>& v, const char* p, match_flag_type flags = match_default);
+   unsigned int Grep(std::vector<std::string>& v, const std::string& s, match_flag_type flags = match_default) { return Grep(v, s.c_str(), flags); }
+   unsigned int Grep(std::vector<std::size_t>& v, const char* p, match_flag_type flags = match_default);
+   unsigned int Grep(std::vector<std::size_t>& v, const std::string& s, match_flag_type flags = match_default) { return Grep(v, s.c_str(), flags); }
+#ifndef NDNBOOST_REGEX_NO_FILEITER
+   unsigned int GrepFiles(GrepFileCallback cb, const char* files, bool recurse = false, match_flag_type flags = match_default);
+   unsigned int GrepFiles(GrepFileCallback cb, const std::string& files, bool recurse = false, match_flag_type flags = match_default) { return GrepFiles(cb, files.c_str(), recurse, flags); }
+   unsigned int FindFiles(FindFilesCallback cb, const char* files, bool recurse = false, match_flag_type flags = match_default);
+   unsigned int FindFiles(FindFilesCallback cb, const std::string& files, bool recurse = false, match_flag_type flags = match_default) { return FindFiles(cb, files.c_str(), recurse, flags); }
+#endif
+
+   std::string Merge(const std::string& in, const std::string& fmt,
+                       bool copy = true, match_flag_type flags = match_default);
+   std::string Merge(const char* in, const char* fmt,
+                       bool copy = true, match_flag_type flags = match_default);
+
+   std::size_t Split(std::vector<std::string>& v, std::string& s, match_flag_type flags = match_default, unsigned max_count = ~0);
+   /*
+    * now operators for returning what matched in more detail:
+    */
+   std::size_t Position(int i = 0)const;
+   std::size_t Length(int i = 0)const;
+   bool Matched(int i = 0)const;
+   std::size_t Marks()const;
+   std::string What(int i = 0)const;
+   std::string operator[](int i)const { return What(i); }
+
+   static const std::size_t npos;
+
+   friend struct re_detail::pred1;
+   friend struct re_detail::pred2;
+   friend struct re_detail::pred3;
+   friend struct re_detail::pred4;
+};
+
+#ifdef NDNBOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef NDNBOOST_HAS_ABI_HEADERS
+#  include NDNBOOST_ABI_SUFFIX
+#endif
+#ifdef NDNBOOST_MSVC
+#pragma warning(pop)
+#endif
+
+} /* namespace ndnboost */
+
+#endif /* __cplusplus */
+
+#endif /* include guard */
+
+
+
+
+
+
+
+
+
+