| 1 | /* alias.h -- structure definitions. */
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| 2 |
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| 3 | /* Copyright (C) 1987,1991 Free Software Foundation, Inc.
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| 4 |
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| 5 | This file is part of GNU Bash, the Bourne Again SHell.
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| 6 |
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| 7 | Bash is free software; you can redistribute it and/or modify it
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| 8 | under the terms of the GNU General Public License as published by
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| 9 | the Free Software Foundation; either version 1, or (at your option)
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| 10 | any later version.
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| 11 |
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| 12 | Bash is distributed in the hope that it will be useful, but WITHOUT
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| 13 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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| 14 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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| 15 | License for more details.
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| 16 |
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| 17 | You should have received a copy of the GNU General Public License
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| 18 | along with Bash; see the file COPYING. If not, write to the Free
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| 19 | Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
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| 20 |
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| 21 | #if !defined (_ALIAS_H_)
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| 22 | #define _ALIAS_H_
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| 23 |
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| 24 | #include "stdc.h"
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| 25 |
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| 26 | #include "hashlib.h"
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| 27 |
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| 28 | typedef struct alias {
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| 29 | char *name;
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| 30 | char *value;
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| 31 | char flags;
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| 32 | } alias_t;
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| 33 |
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| 34 | /* Values for `flags' member of struct alias. */
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| 35 | #define AL_EXPANDNEXT 0x1
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| 36 | #define AL_BEINGEXPANDED 0x2
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| 37 |
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| 38 | /* The list of known aliases. */
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| 39 | extern HASH_TABLE *aliases;
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| 40 |
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| 41 | extern void initialize_aliases __P((void));
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| 42 |
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| 43 | /* Scan the list of aliases looking for one with NAME. Return NULL
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| 44 | if the alias doesn't exist, else a pointer to the alias. */
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| 45 | extern alias_t *find_alias __P((char *));
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| 46 |
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| 47 | /* Return the value of the alias for NAME, or NULL if there is none. */
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| 48 | extern char *get_alias_value __P((char *));
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| 49 |
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| 50 | /* Make a new alias from NAME and VALUE. If NAME can be found,
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| 51 | then replace its value. */
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| 52 | extern void add_alias __P((char *, char *));
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| 53 |
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| 54 | /* Remove the alias with name NAME from the alias list. Returns
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| 55 | the index of the removed alias, or -1 if the alias didn't exist. */
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| 56 | extern int remove_alias __P((char *));
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| 57 |
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| 58 | /* Remove all aliases. */
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| 59 | extern void delete_all_aliases __P((void));
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| 60 |
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| 61 | /* Return an array of all defined aliases. */
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| 62 | extern alias_t **all_aliases __P((void));
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| 63 |
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| 64 | /* Expand a single word for aliases. */
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| 65 | extern char *alias_expand_word __P((char *));
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| 66 |
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| 67 | /* Return a new line, with any aliases expanded. */
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| 68 | extern char *alias_expand __P((char *));
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| 69 |
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| 70 | #endif /* _ALIAS_H_ */
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