1 files changed, 74 insertions, 0 deletions
diff --git a/src/path-prefix.cpp b/src/path-prefix.cpp
new file mode 100644
index 000000000..87b756eb4
--- /dev/null
+++ b/src/path-prefix.cpp
@@ -0,0 +1,74 @@
+/*
+ * path-prefix.cpp - Inkscape specific prefix handling
+ *
+ * Authors:
+ *   Eduard Braun <eduard.braun2@gmx.de>
+ *
+ * Copyright (C) 2017 Authors
+ *
+ * This file is part of Inkscape.
+ *
+ * Inkscape is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * See the file COPYING for details.
+ *
+ */
+
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+
+#include <glib.h>
+#include "path-prefix.h"
+
+
+/**
+ * Determine the location of the Inkscape data directory (typically the share/ folder
+ * from where Inkscape should be loading resources) and append a relative path
+ *
+ *  - by default use the compile time value of INKSCAPE_DATADIR
+ *  - on Windows inkscape_datadir will be relative to the called executable by default
+ *    (typically inkscape/share but also handles the case where the executable is in a /bin subfolder)
+ *  - if the environment variable INKSCAPE_DATADIR is set it will override all of the above
+ */
+char *append_inkscape_datadir(const char *relative_path)
+{
+    static gchar const *inkscape_datadir;
+    if (!inkscape_datadir) {
+        gchar const *datadir_env = g_getenv("INKSCAPE_DATADIR");
+        if (datadir_env) {
+            inkscape_datadir = g_strdup(datadir_env);
+        } else {
+#ifdef _WIN32
+            gchar *module_path = g_win32_get_package_installation_directory_of_module(NULL);
+            inkscape_datadir = g_build_filename(module_path, "share", NULL);
+            g_free(module_path);
+#else
+            inkscape_datadir = INKSCAPE_DATADIR;
+#endif
+        }
+    }
+
+    if (!relative_path) {
+        relative_path = "";
+    }
+
+    return g_build_filename(inkscape_datadir, relative_path, NULL);
+}
+
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :