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- /* pathsrch.h: environment-variable path searching for files, possibly
- in subdirectories.
-
- Copyright (C) 1992 Free Software Foundation, Inc.
-
- This program 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, or (at your option)
- any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #ifndef PATHSEARCH_H
- #define PATHSEARCH_H
-
- #include "types.h"
-
-
- /* Look for FILENAME in each of the directories given in the DIR_LIST
- array. (Unless DIR_LIST is null, or FILENAME is absolute or
- explicitly relative, in which case we just look at FILENAME.) Return
- the complete pathname of the first readable file found, or NULL. */
- extern string find_path_filename P2H(string filename, string *dir_list);
-
- /* Return a NULL-terminated array of all the directory names in the
- value of the environment variable ENV_NAME (or DEFAULT_PATH if it is
- not set). Each directory in the list ends with the directory separator,
- e.g., `/'.
-
- A leading or trailing path separator (e.g., `:') in the value of
- ENV_NAME is replaced by DEFAULT_PATH.
-
- If any element of the path ends with a double directory separator
- (e.g., `foo//'), it is replaced by all its subdirectories. */
- extern string *initialize_path_list P2H(string env_name, string default_path);
-
- /* Replace a leading or trailing `:' in ENV_PATH with DEFAULT_PATH. If
- neither is present, return ENV_PATH if that is non-null, else
- DEFAULT_PATH. */
- extern string expand_default P2H(string env_path, string default_path);
-
- /* Replace a leading ~ or ~name in FILENAME with getenv ("HOME") or
- name's home directory. */
- extern string expand_tilde P1H(string filename);
-
- #endif /* not PATHSEARCH_H */
-