From b51965dddbed68f23c5e8c169c23c794313ce5f6 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 28 Jun 2011 17:17:23 +0200
Subject: Add boost subset as an implementation detail

---
 cutl/details/boost/regex/v4/primary_transform.hpp | 146 ++++++++++++++++++++++
 1 file changed, 146 insertions(+)
 create mode 100644 cutl/details/boost/regex/v4/primary_transform.hpp

(limited to 'cutl/details/boost/regex/v4/primary_transform.hpp')

diff --git a/cutl/details/boost/regex/v4/primary_transform.hpp b/cutl/details/boost/regex/v4/primary_transform.hpp
new file mode 100644
index 0000000..ae59e5b
--- /dev/null
+++ b/cutl/details/boost/regex/v4/primary_transform.hpp
@@ -0,0 +1,146 @@
+/*
+ *
+ * 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:        primary_transform.hpp
+  *   VERSION:     see <cutl/details/boost/version.hpp>
+  *   DESCRIPTION: Heuristically determines the sort string format in use
+  *                by the current locale.
+  */
+
+#ifndef BOOST_REGEX_PRIMARY_TRANSFORM
+#define BOOST_REGEX_PRIMARY_TRANSFORM
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+namespace cutl_details_boost{
+   namespace re_detail{
+
+
+enum{
+   sort_C,
+   sort_fixed,
+   sort_delim,
+   sort_unknown
+};
+
+template <class S, class charT>
+unsigned count_chars(const S& s, charT c)
+{
+   //
+   // Count how many occurances of character c occur
+   // in string s: if c is a delimeter between collation
+   // fields, then this should be the same value for all
+   // sort keys:
+   //
+   unsigned int count = 0;
+   for(unsigned pos = 0; pos < s.size(); ++pos)
+   {
+      if(s[pos] == c) ++count;
+   }
+   return count;
+}
+
+
+template <class traits, class charT>
+unsigned find_sort_syntax(const traits* pt, charT* delim)
+{
+   //
+   // compare 'a' with 'A' to see how similar they are,
+   // should really use a-accute but we can't portably do that,
+   //
+   typedef typename traits::string_type string_type;
+   typedef typename traits::char_type char_type;
+
+   // Suppress incorrect warning for MSVC
+   (void)pt;
+
+   char_type a[2] = {'a', '\0', };
+   string_type sa(pt->transform(a, a+1));
+   if(sa == a)
+   {
+      *delim = 0;
+      return sort_C;
+   }
+   char_type A[2] = { 'A', '\0', };
+   string_type sA(pt->transform(A, A+1));
+   char_type c[2] = { ';', '\0', };
+   string_type sc(pt->transform(c, c+1));
+
+   int pos = 0;
+   while((pos <= static_cast<int>(sa.size())) && (pos <= static_cast<int>(sA.size())) && (sa[pos] == sA[pos])) ++pos;
+   --pos;
+   if(pos < 0)
+   {
+      *delim = 0;
+      return sort_unknown;
+   }
+   //
+   // at this point sa[pos] is either the end of a fixed width field
+   // or the character that acts as a delimiter:
+   //
+   charT maybe_delim = sa[pos];
+   if((pos != 0) && (count_chars(sa, maybe_delim) == count_chars(sA, maybe_delim)) && (count_chars(sa, maybe_delim) == count_chars(sc, maybe_delim)))
+   {
+      *delim = maybe_delim;
+      return sort_delim;
+   }
+   //
+   // OK doen't look like a delimiter, try for fixed width field:
+   //
+   if((sa.size() == sA.size()) && (sa.size() == sc.size()))
+   {
+      // note assumes that the fixed width field is less than
+      // (numeric_limits<charT>::max)(), should be true for all types
+      // I can't imagine 127 character fields...
+      *delim = static_cast<charT>(++pos);
+      return sort_fixed;
+   }
+   //
+   // don't know what it is:
+   //
+   *delim = 0;
+   return sort_unknown;
+}
+
+
+   } // namespace re_detail
+} // namespace cutl_details_boost
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable: 4103)
+#endif
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#endif
+
+
+
+
+
+
+
-- 
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