1 /* alias.h -- structure definitions. */
3 /* Copyright (C) 1987,1991 Free Software Foundation, Inc.
5 This file is part of GNU Bash, the Bourne Again SHell.
7 Bash is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 1, or (at your option)
12 Bash is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 License for more details.
17 You should have received a copy of the GNU General Public License
18 along with Bash; see the file COPYING. If not, write to the Free
19 Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
21 #if !defined (_ALIAS_H_)
26 extern char *xmalloc ();
28 typedef struct alias {
34 /* Values for `flags' member of struct alias. */
35 #define AL_EXPANDNEXT 0x1
36 #define AL_BEINGEXPANDED 0x2
38 /* The list of known aliases. */
39 extern HASH_TABLE *aliases;
41 extern void initialize_aliases ();
43 /* Scan the list of aliases looking for one with NAME. Return NULL
44 if the alias doesn't exist, else a pointer to the alias. */
45 extern alias_t *find_alias ();
47 /* Return the value of the alias for NAME, or NULL if there is none. */
48 extern char *get_alias_value ();
50 /* Make a new alias from NAME and VALUE. If NAME can be found,
51 then replace its value. */
52 extern void add_alias ();
54 /* Remove the alias with name NAME from the alias list. Returns
55 the index of the removed alias, or -1 if the alias didn't exist. */
56 extern int remove_alias ();
58 /* Remove all aliases. */
59 extern void delete_all_aliases ();
61 /* Return a new line, with any aliases expanded. */
62 extern char *alias_expand ();
64 /* Return an array of all defined aliases. */
65 extern alias_t **all_aliases ();
67 /* Expand a single word for aliases. */
68 extern char *alias_expand_word ();
70 #endif /* _ALIAS_H_ */