1 files changed, 65 insertions, 3 deletions

diff --git a/src/boosty.h b/src/boosty.h
index 6ec417a..82c765b 100644
--- a/src/boosty.h
+++ b/src/boosty.h
@@ -10,9 +10,8 @@
  versions of boost found on popular versions of linux, circa early 2012.
 
  design
-  hope that the user is compiling with boost>1.46 + filesystem v3
-  if not, fall back to older deprecated functions, and rely on
-  testing to find bugs. implement the minimum needed by OpenSCAD and no more.
+  the boost filsystem changed around 1.46-1.48. we do a large #ifdef
+  based on boost version that wraps various functions appropriately.
   in a few years, this file should be deleted as unnecessary.
 
  see also
@@ -27,7 +26,9 @@
 #include <string>
 #include <boost/version.hpp>
 #include <boost/filesystem.hpp>
+#include <boost/algorithm/string.hpp>
 namespace fs = boost::filesystem;
+#include "printutils.h"
 
 namespace boosty {
 
@@ -77,6 +78,67 @@ inline std::string extension_str( fs::path p)
 
 #endif
 
+
+
+
+
+#if BOOST_VERSION >= 104800
+
+inline fs::path canonical( fs::path p, fs::path p2 )
+{
+	return fs::canonical( p, p2 );
+}
+
+inline fs::path canonical( fs::path p )
+{
+	return fs::canonical( p );
+}
+
+#else
+
+inline fs::path canonical( fs::path p, fs::path p2 )
+{
+#if defined (__WIN32__) || defined(__APPLE__)
+#error you should be using a newer version of boost on win/mac
+#endif
+	// based on the code in boost
+	fs::path result;
+	if (p=="") p=p2;
+	std::string result_s;
+	std::vector<std::string> resultv, pieces;
+	std::vector<std::string>::iterator pi;
+	std::string tmps = boosty::stringy( p );
+	boost::split( pieces, tmps, boost::is_any_of("/") );
+	for ( pi = pieces.begin(); pi != pieces.end(); ++pi )
+	{
+		if (*pi == "..")
+			resultv.erase( resultv.end() );
+		else
+			resultv.push_back( *pi );
+	}
+	for ( pi = resultv.begin(); pi != resultv.end(); ++pi )
+	{
+		if ((*pi).length()>0) result_s = result_s + "/" + *pi;
+	}
+	result = fs::path( result_s );
+	if (fs::is_symlink(result))
+	{
+		PRINT("WARNING: canonical() wrapper can't do symlinks. rebuild openscad with boost >=1.48");
+		PRINT("WARNING: or don't use symbolic links");
+	}
+	return result;
+}
+
+inline fs::path canonical( fs::path p )
+{
+	return canonical( p, fs::current_path() );
+}
+
+#endif
+
+
+
+
 } // namespace
 
 #endif