+ /* Adding mf/out make lilypond unchanged source directory, when setting
+ LILYPONDPREFIX to lilypond-x.y.z */
+ char const *suffixes[] = {"ly", "ps", "scm", 0 };
+
+ vector<string> dirs;
+ for (char const **s = suffixes; *s; s++)
+ {
+ string path = lilypond_datadir + to_string ('/') + string (*s);
+ dirs.push_back (path);
+ }
+
+ dirs.push_back (lilypond_datadir + "/fonts/otf/");
+ dirs.push_back (lilypond_datadir + "/fonts/type1/");
+ dirs.push_back (lilypond_datadir + "/fonts/svg/");
+
+ for (vsize i = 0; i < dirs.size (); i++)
+ global_path.prepend (dirs[i]);
+}
+
+string
+expand_environment_variables (string orig)
+{
+ const char *start_ptr = orig.c_str ();
+ const char *ptr = orig.c_str ();
+ size_t len = orig.length ();
+
+ string out;
+ while (ptr < start_ptr + len)
+ {
+ char *dollar = strchr (ptr, '$');
+
+ if (dollar != NULL)
+ {
+ char *start_var = dollar + 1;
+ char *end_var = start_var;
+ char *start_next = end_var;
+
+ out += string (ptr, dollar - ptr);
+ ptr = dollar;
+
+ if (*start_var == '{')
+ {
+ start_var ++;
+
+ end_var = strchr (start_var, '}');
+
+ if (end_var == NULL)
+ {
+ end_var = start_var + len;
+ start_next = end_var;
+ }
+ else
+ {
+ start_next = end_var + 1;
+ }
+ }
+ else
+ {
+ /*
+ Hmm. what to do for $1 , $~ etc.?
+ */
+ do
+ {
+ end_var ++;
+ }
+ while (isalnum (*end_var) || *end_var == '_');
+ start_next = end_var;
+ }
+
+ if (start_var < end_var)
+ {
+ string var_name (start_var, end_var - start_var);
+ const char *value = getenv (var_name.c_str ());
+ if (value != NULL)
+ out += string (value);