Add common_ancestor function

[libs/core.git] / source / fs / utils.cpp

diff --git a/source/fs/utils.cpp b/source/fs/utils.cpp
index a34dd4e54ca86d6baf72a877cea30d6daa959c91..1da18591b1c87119c2fccd0012898af78c5e3412 100644 (file)
--- a/source/fs/utils.cpp
+++ b/source/fs/utils.cpp
@@ -154,6 +154,16 @@ Path relative(const Path &path, const Path &base)
        return result;
 }
 
+Path common_ancestor(const Path &path1, const Path &path2)
+{
+       Path::Iterator i = path1.begin();
+       Path::Iterator j = path2.begin();
+       Path result;
+       for(; (i!=path1.end() && j!=path2.end() && *i==*j); ++i, ++j)
+               result /= *i;
+       return result;
+}
+
 int descendant_depth(const Path &path, const Path &parent)
 {
        Path::Iterator i = path.begin();