Add PBD::get_suffix() for ripping file suffixes from paths

2 files changed, 17 insertions, 0 deletions

diff --git a/libs/pbd/file_utils.cc b/libs/pbd/file_utils.cc
index 311d22f9e0..0877ceacbc 100644
--- a/libs/pbd/file_utils.cc
+++ b/libs/pbd/file_utils.cc
@@ -336,6 +336,16 @@ get_absolute_path (const std::string & p)
 	return Glib::build_filename (Glib::get_current_dir(), p);
 }
 
+std::string
+get_suffix (const std::string & p)
+{
+	string::size_type period = p.find_last_of ('.');
+	if (period == string::npos || period == p.length() - 1) {
+		return string();
+	}
+	return p.substr (period+1);
+}
+
 bool
 equivalent_paths (const std::string& a, const std::string& b)
 {
diff --git a/libs/pbd/pbd/file_utils.h b/libs/pbd/pbd/file_utils.h
index 9ef5374a0a..cb0aa38065 100644
--- a/libs/pbd/pbd/file_utils.h
+++ b/libs/pbd/pbd/file_utils.h
@@ -182,6 +182,13 @@ LIBPBD_API void copy_files(const std::string & from_path, const std::string & to
 LIBPBD_API std::string get_absolute_path (const std::string &);
 
 /**
+ * Take a path/filename and return the suffix (characters beyond the last '.'
+ * @return A string containing the suffix, which will be empty
+ * if there are no '.' characters in the path/filename.
+ */
+LIBPBD_API std::string get_suffix (const std::string &);
+
+/**
  * Find out if `needle' is a file or directory within the
  * directory `haystack'.
  * @return true if it is.