75 lines
2.1 KiB
C
75 lines
2.1 KiB
C
/* alias.h -- structure definitions. */
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/* Copyright (C) 1987,1991 Free Software Foundation, Inc.
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This file is part of GNU Bash, the Bourne Again SHell.
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Bash is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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Bash is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU General Public License
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along with Bash; see the file COPYING. If not, write to the Free
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Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#if !defined (_ALIAS_)
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#define _ALIAS_
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#include "hash.h"
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extern char *xmalloc ();
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#if !defined (whitespace)
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# define whitespace(c) (((c) == ' ') || ((c) == '\t'))
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#endif /* !whitespace */
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#if !defined (savestring)
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# define savestring(x) (char *)strcpy (xmalloc (1 + strlen (x)), (x))
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#endif /* !savestring */
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#if !defined (NULL)
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# if defined (__STDC__)
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# define NULL ((void *) 0)
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# else
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# define NULL 0x0
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# endif /* !__STDC__ */
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#endif /* !NULL */
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typedef struct {
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char *name;
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char *value;
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} ASSOC;
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/* The list of known aliases. */
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extern HASH_TABLE *aliases;
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extern void initialize_aliases ();
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/* Scan the list of aliases looking for one with NAME. Return NULL
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if the alias doesn't exist, else a pointer to the assoc. */
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extern ASSOC *find_alias ();
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/* Return the value of the alias for NAME, or NULL if there is none. */
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extern char *get_alias_value ();
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/* Make a new alias from NAME and VALUE. If NAME can be found,
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then replace its value. */
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extern void add_alias ();
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/* Remove the alias with name NAME from the alias list. Returns
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the index of the removed alias, or -1 if the alias didn't exist. */
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extern int remove_alias ();
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/* Return a new line, with any aliases expanded. */
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extern char *alias_expand ();
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/* Return an array of all defined aliases. */
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extern ASSOC **all_aliases ();
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#endif /* _ALIAS_ */
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