7 /** searching directory for file.
9 Abstraction of PATH variable. An interface for searching input files.
10 Search a number of dirs for a file.
16 class File_path : private Array<String>
19 /// locate a file in the search path
20 String find(String nm);
22 /// construct using prefix. Normally argv[0].
25 /// add to end of path.
27 void add(String str) { push(str); }
29 /// split path into its components
30 void split_path(String path, String &drive, String &dirs, String &filebase, String &extension);