Move PBD::canonical_path to pbd/file_utils.h/cc and reimplement for Windows

[ardour.git] / libs / pbd / file_utils.cc

diff --git a/libs/pbd/file_utils.cc b/libs/pbd/file_utils.cc
index 26f80f971981965e61ca8f29c3ac4747993504c4..63df6ee3c7dac1def8ba217421cb76a7ad41c2ae 100644 (file)
--- a/libs/pbd/file_utils.cc
+++ b/libs/pbd/file_utils.cc
@@ -361,6 +361,65 @@ get_absolute_path (const std::string & p)
        return Glib::build_filename (Glib::get_current_dir(), p);
 }
 
+string
+canonical_path (const std::string& path)
+{
+#ifdef PLATFORM_WINDOWS
+       wchar_t resolved_wpath[_MAX_PATH];
+
+       // sizeof(wchar_t) is 2 bytes using gcc/mingw and VC++ but 4 bytes using gcc/linux
+       assert (sizeof(wchar_t) == 2);
+
+       wchar_t* wfilepath = (wchar_t*)g_utf8_to_utf16 (path.c_str(), -1, NULL, NULL, NULL);
+
+       if (wfilepath == NULL) {
+               DEBUG_TRACE (
+                   DEBUG::FileUtils,
+                   string_compose ("PBD::canonical_path: Unable to convert path from utf8 to utf16 : %1\n",
+                                   path));
+               return path;
+       }
+
+       if (_wfullpath (resolved_wpath, wfilepath, _MAX_PATH) == NULL) {
+               DEBUG_TRACE (DEBUG::FileUtils,
+                            string_compose ("PBD::canonical_path: Unable to resolve %1\n", wfilepath));
+               return path;
+       }
+
+       gchar* resolved_utf8_path =
+           g_utf16_to_utf8 (reinterpret_cast<const gunichar2*>(resolved_wpath), -1, NULL, NULL, NULL);
+
+       if (resolved_utf8_path == NULL) {
+               DEBUG_TRACE (
+                   DEBUG::FileUtils,
+                   string_compose ("PBD::canonical_path: Unable to convert path from utf16 to utf8 : %1\n",
+                                   resolved_wpath));
+               return path;
+       }
+
+       const string retval(resolved_utf8_path);
+
+       g_free (wfilepath);
+       g_free (resolved_utf8_path);
+
+       return retval;
+
+#else
+       char buf[PATH_MAX+1];
+
+       if (realpath (path.c_str(), buf) == NULL) {
+               DEBUG_TRACE (DEBUG::FileUtils,
+                            string_compose ("PBD::canonical_path: Unable to resolve %1: %2\n", path,
+                                            g_strerror (errno)));
+               return path;
+       }
+       DEBUG_TRACE (DEBUG::FileUtils,
+                    string_compose ("PBD::canonical_path %1 resolved to: %2\n", path, string (buf)));
+
+       return string (buf);
+#endif
+}
+
 std::string
 get_suffix (const std::string & p)
 {