From c23346c4cda9e0c2318c302dc6014d3fef53a6d3 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Fri, 20 Feb 2015 09:29:56 +0200
Subject: Rework extension handling logic

We no longer support hxx{vector.}. Rather, the target type can decide,
e.g., based on a config variable, whether to append an extension. Also,
in the future we may support a syntax to specify that this is a complete
name, e.g., hxx{'vector'}.
---
 build/path | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

(limited to 'build/path')

diff --git a/build/path b/build/path
index 8eb560b..9b3668d 100644
--- a/build/path
+++ b/build/path
@@ -74,6 +74,33 @@ namespace build
       return string_type::npos;
     }
 
+    static size_type
+    find_extension (string_type const& s)
+    {
+      size_type i (s.size ());
+
+      for (; i > 0; --i)
+      {
+        C c (s[i - 1]);
+
+        if (c == '.')
+          break;
+
+        if (is_separator (c))
+        {
+          i = 0;
+          break;
+        }
+      }
+
+      // Weed out paths like ".txt" (and "/.txt") and "txt.".
+      //
+      if (i > 1 && !is_separator (s[i - 2]) && i != s.size ())
+        return i - 1;
+      else
+        return string_type::npos;
+    }
+
     static int
     compare (string_type const& l, string_type const& r)
     {
-- 
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