From 18c3a1eaaf7577fb210f08a73a12f93316d5583c Mon Sep 17 00:00:00 2001
From: Danny Robson <danny@nerdcruft.net>
Date: Fri, 12 Feb 2016 13:36:03 +1100
Subject: [PATCH] io: record path in path_error

---
 io.cpp | 15 +++++++++++++++
 io.hpp | 11 +++++++----
 2 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/io.cpp b/io.cpp
index fcc77ec7..fb159f0c 100644
--- a/io.cpp
+++ b/io.cpp
@@ -201,3 +201,18 @@ scoped_cwd::~scoped_cwd ()
     if (!chdir (m_original.c_str ()))
         errno_error::throw_code ();
 }
+
+
+///////////////////////////////////////////////////////////////////////////////
+path_error::path_error (const boost::filesystem::path &_path):
+    runtime_error (format::render ("Unknown path: %!", m_path)),
+    m_path (_path)
+{ ; }
+
+
+//-----------------------------------------------------------------------------
+const char*
+path_error::path (void) const noexcept
+{
+    return m_path.c_str ();
+}
diff --git a/io.hpp b/io.hpp
index 95725087..5c3c26c5 100644
--- a/io.hpp
+++ b/io.hpp
@@ -134,10 +134,13 @@ namespace util {
 
     //-------------------------------------------------------------------------
     class path_error : public std::runtime_error {
-        public:
-            path_error (const boost::filesystem::path &path):
-                runtime_error ("Invalid path " + path.string ())
-            { ; }
+    public:
+        path_error (const boost::filesystem::path &path);
+
+        const char* path (void) const noexcept;
+
+    private:
+        const boost::filesystem::path m_path;
     };
 }