ndnboost: Include boost::iostreams for internal use.
diff --git a/include/ndnboost/regex/v4/regex_grep.hpp b/include/ndnboost/regex/v4/regex_grep.hpp
new file mode 100644
index 0000000..ee789d2
--- /dev/null
+++ b/include/ndnboost/regex/v4/regex_grep.hpp
@@ -0,0 +1,155 @@
+/*
+ *
+ * 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 regex_grep.hpp
+ * VERSION see <ndnboost/version.hpp>
+ * DESCRIPTION: Provides regex_grep implementation.
+ */
+
+#ifndef NDNBOOST_REGEX_V4_REGEX_GREP_HPP
+#define NDNBOOST_REGEX_V4_REGEX_GREP_HPP
+
+
+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
+
+//
+// regex_grep:
+// find all non-overlapping matches within the sequence first last:
+//
+template <class Predicate, class BidiIterator, class charT, class traits>
+inline unsigned int regex_grep(Predicate foo,
+ BidiIterator first,
+ BidiIterator last,
+ const basic_regex<charT, traits>& e,
+ match_flag_type flags = match_default)
+{
+ if(e.flags() & regex_constants::failbit)
+ return false;
+
+ typedef typename match_results<BidiIterator>::allocator_type match_allocator_type;
+
+ match_results<BidiIterator> m;
+ re_detail::perl_matcher<BidiIterator, match_allocator_type, traits> matcher(first, last, m, e, flags, first);
+ unsigned int count = 0;
+ while(matcher.find())
+ {
+ ++count;
+ if(0 == foo(m))
+ return count; // caller doesn't want to go on
+ if(m[0].second == last)
+ return count; // we've reached the end, don't try and find an extra null match.
+ if(m.length() == 0)
+ {
+ if(m[0].second == last)
+ return count;
+ // we found a NULL-match, now try to find
+ // a non-NULL one at the same position:
+ match_results<BidiIterator, match_allocator_type> m2(m);
+ matcher.setf(match_not_null | match_continuous);
+ if(matcher.find())
+ {
+ ++count;
+ if(0 == foo(m))
+ return count;
+ }
+ else
+ {
+ // reset match back to where it was:
+ m = m2;
+ }
+ matcher.unsetf((match_not_null | match_continuous) & ~flags);
+ }
+ }
+ return count;
+}
+
+//
+// regex_grep convenience interfaces:
+#ifndef NDNBOOST_NO_FUNCTION_TEMPLATE_ORDERING
+//
+// this isn't really a partial specialisation, but template function
+// overloading - if the compiler doesn't support partial specialisation
+// then it really won't support this either:
+template <class Predicate, class charT, class traits>
+inline unsigned int regex_grep(Predicate foo, const charT* str,
+ const basic_regex<charT, traits>& e,
+ match_flag_type flags = match_default)
+{
+ return regex_grep(foo, str, str + traits::length(str), e, flags);
+}
+
+template <class Predicate, class ST, class SA, class charT, class traits>
+inline unsigned int regex_grep(Predicate foo, const std::basic_string<charT, ST, SA>& s,
+ const basic_regex<charT, traits>& e,
+ match_flag_type flags = match_default)
+{
+ return regex_grep(foo, s.begin(), s.end(), e, flags);
+}
+#else // partial specialisation
+inline unsigned int regex_grep(bool (*foo)(const cmatch&), const char* str,
+ const regex& e,
+ match_flag_type flags = match_default)
+{
+ return regex_grep(foo, str, str + regex::traits_type::length(str), e, flags);
+}
+#ifndef NDNBOOST_NO_WREGEX
+inline unsigned int regex_grep(bool (*foo)(const wcmatch&), const wchar_t* str,
+ const wregex& e,
+ match_flag_type flags = match_default)
+{
+ return regex_grep(foo, str, str + wregex::traits_type::length(str), e, flags);
+}
+#endif
+inline unsigned int regex_grep(bool (*foo)(const match_results<std::string::const_iterator>&), const std::string& s,
+ const regex& e,
+ match_flag_type flags = match_default)
+{
+ return regex_grep(foo, s.begin(), s.end(), e, flags);
+}
+#if !defined(NDNBOOST_NO_WREGEX)
+inline unsigned int regex_grep(bool (*foo)(const match_results<std::basic_string<wchar_t>::const_iterator>&),
+ const std::basic_string<wchar_t>& s,
+ const wregex& e,
+ match_flag_type flags = match_default)
+{
+ return regex_grep(foo, s.begin(), s.end(), e, flags);
+}
+#endif
+#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
+
+} // namespace ndnboost
+
+#endif // NDNBOOST_REGEX_V4_REGEX_GREP_HPP
+