121 lines
4.0 KiB
C
121 lines
4.0 KiB
C
/* $NetBSD: var.h,v 1.9 1995/05/11 21:30:44 christos Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1991, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Kenneth Almquist.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)var.h 8.2 (Berkeley) 5/4/95
|
|
*/
|
|
|
|
/*
|
|
* Shell variables.
|
|
*/
|
|
|
|
/* flags */
|
|
#define VEXPORT 01 /* variable is exported */
|
|
#define VREADONLY 02 /* variable cannot be modified */
|
|
#define VSTRFIXED 04 /* variable struct is staticly allocated */
|
|
#define VTEXTFIXED 010 /* text is staticly allocated */
|
|
#define VSTACK 020 /* text is allocated on the stack */
|
|
#define VUNSET 040 /* the variable is not set */
|
|
|
|
|
|
struct var {
|
|
struct var *next; /* next entry in hash list */
|
|
int flags; /* flags are defined above */
|
|
char *text; /* name=value */
|
|
};
|
|
|
|
|
|
struct localvar {
|
|
struct localvar *next; /* next local variable in list */
|
|
struct var *vp; /* the variable that was made local */
|
|
int flags; /* saved flags */
|
|
char *text; /* saved text */
|
|
};
|
|
|
|
|
|
struct localvar *localvars;
|
|
|
|
#if ATTY
|
|
extern struct var vatty;
|
|
#endif
|
|
extern struct var vifs;
|
|
extern struct var vmail;
|
|
extern struct var vmpath;
|
|
extern struct var vpath;
|
|
extern struct var vps1;
|
|
extern struct var vps2;
|
|
#if ATTY
|
|
extern struct var vterm;
|
|
#endif
|
|
|
|
/*
|
|
* The following macros access the values of the above variables.
|
|
* They have to skip over the name. They return the null string
|
|
* for unset variables.
|
|
*/
|
|
|
|
#define ifsval() (vifs.text + 4)
|
|
#define mailval() (vmail.text + 5)
|
|
#define mpathval() (vmpath.text + 9)
|
|
#define pathval() (vpath.text + 5)
|
|
#define ps1val() (vps1.text + 4)
|
|
#define ps2val() (vps2.text + 4)
|
|
#if ATTY
|
|
#define termval() (vterm.text + 5)
|
|
#endif
|
|
|
|
#if ATTY
|
|
#define attyset() ((vatty.flags & VUNSET) == 0)
|
|
#endif
|
|
#define mpathset() ((vmpath.flags & VUNSET) == 0)
|
|
|
|
void initvar __P((void));
|
|
void setvar __P((char *, char *, int));
|
|
void setvareq __P((char *, int));
|
|
struct strlist;
|
|
void listsetvar __P((struct strlist *));
|
|
char *lookupvar __P((char *));
|
|
char *bltinlookup __P((char *, int));
|
|
char **environment __P((void));
|
|
void shprocvar __P((void));
|
|
int showvarscmd __P((int, char **));
|
|
int exportcmd __P((int, char **));
|
|
int localcmd __P((int, char **));
|
|
void mklocal __P((char *));
|
|
void poplocalvars __P((void));
|
|
int setvarcmd __P((int, char **));
|
|
int unsetcmd __P((int, char **));
|