| | 1 | /*- |
| | 2 | * SPDX-License-Identifier: BSD-3-Clause |
| | 3 | * |
| | 4 | * Copyright (c) 1991, 1993 |
| | 5 | * The Regents of the University of California. All rights reserved. |
| | 6 | * |
| | 7 | * This code is derived from software contributed to Berkeley by |
| | 8 | * Kenneth Almquist. |
| | 9 | * |
| | 10 | * Redistribution and use in source and binary forms, with or without |
| | 11 | * modification, are permitted provided that the following conditions |
| | 12 | * are met: |
| | 13 | * 1. Redistributions of source code must retain the above copyright |
| | 14 | * notice, this list of conditions and the following disclaimer. |
| | 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| | 16 | * notice, this list of conditions and the following disclaimer in the |
| | 17 | * documentation and/or other materials provided with the distribution. |
| | 18 | * 3. Neither the name of the University nor the names of its contributors |
| | 19 | * may be used to endorse or promote products derived from this software |
| | 20 | * without specific prior written permission. |
| | 21 | * |
| | 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| | 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| | 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| | 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| | 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| | 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| | 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| | 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| | 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| | 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| | 32 | * SUCH DAMAGE. |
| | 33 | * |
| | 34 | * @(#)var.h 8.2 (Berkeley) 5/4/95 |
| | 35 | * $FreeBSD: head/bin/sh/var.h 326025 2017-11-20 19:49:47Z pfg $ |
| | 36 | */ |
| | 37 | |
| | 38 | /* |
| | 39 | * Shell variables. |
| | 40 | */ |
| | 41 | |
| | 42 | /* flags */ |
| | 43 | #define VEXPORT 0x01 /* variable is exported */ |
| | 44 | #define VREADONLY 0x02 /* variable cannot be modified */ |
| | 45 | #define VSTRFIXED 0x04 /* variable struct is statically allocated */ |
| | 46 | #define VTEXTFIXED 0x08 /* text is statically allocated */ |
| | 47 | #define VSTACK 0x10 /* text is allocated on the stack */ |
| | 48 | #define VUNSET 0x20 /* the variable is not set */ |
| | 49 | #define VNOFUNC 0x40 /* don't call the callback function */ |
| | 50 | #define VNOSET 0x80 /* do not set variable - just readonly test */ |
| | 51 | #define VNOLOCAL 0x100 /* ignore forcelocal */ |
| | 52 | |
| | 53 | |
| | 54 | struct var { |
| | 55 | struct var *next; /* next entry in hash list */ |
| | 56 | int flags; /* flags are defined above */ |
| | 57 | int name_len; /* length of name */ |
| | 58 | char *text; /* name=value */ |
| | 59 | void (*func)(const char *); |
| | 60 | /* function to be called when */ |
| | 61 | /* the variable gets set/unset */ |
| | 62 | }; |
| | 63 | |
| | 64 | |
| | 65 | struct localvar { |
| | 66 | struct localvar *next; /* next local variable in list */ |
| | 67 | struct var *vp; /* the variable that was made local */ |
| | 68 | int flags; /* saved flags */ |
| | 69 | char *text; /* saved text */ |
| | 70 | }; |
| | 71 | |
| | 72 | |
| | 73 | extern struct localvar *localvars; |
| | 74 | extern int forcelocal; |
| | 75 | |
| | 76 | extern struct var vifs; |
| | 77 | extern struct var vmail; |
| | 78 | extern struct var vmpath; |
| | 79 | extern struct var vpath; |
| | 80 | extern struct var vps1; |
| | 81 | extern struct var vps2; |
| | 82 | extern struct var vps4; |
| | 83 | extern struct var vdisvfork; |
| | 84 | #ifndef NO_HISTORY |
| | 85 | extern struct var vhistsize; |
| | 86 | extern struct var vterm; |
| | 87 | #endif |
| | 88 | |
| | 89 | extern int localeisutf8; |
| | 90 | /* The parser uses the locale that was in effect at startup. */ |
| | 91 | extern int initial_localeisutf8; |
| | 92 | |
| | 93 | /* |
| | 94 | * The following macros access the values of the above variables. |
| | 95 | * They have to skip over the name. They return the null string |
| | 96 | * for unset variables. |
| | 97 | */ |
| | 98 | |
| | 99 | #define ifsval() (vifs.text + 4) |
| | 100 | #define ifsset() ((vifs.flags & VUNSET) == 0) |
| | 101 | #define mailval() (vmail.text + 5) |
| | 102 | #define mpathval() (vmpath.text + 9) |
| | 103 | #define pathval() (vpath.text + 5) |
| | 104 | #define ps1val() (vps1.text + 4) |
| | 105 | #define ps2val() (vps2.text + 4) |
| | 106 | #define ps4val() (vps4.text + 4) |
| | 107 | #define optindval() (voptind.text + 7) |
| | 108 | #ifndef NO_HISTORY |
| | 109 | #define histsizeval() (vhistsize.text + 9) |
| | 110 | #define termval() (vterm.text + 5) |
| | 111 | #endif |
| | 112 | |
| | 113 | #define mpathset() ((vmpath.flags & VUNSET) == 0) |
| | 114 | #define disvforkset() ((vdisvfork.flags & VUNSET) == 0) |
| | 115 | |
| | 116 | void initvar(void); |
| | 117 | void setvar(const char *, const char *, int); |
| | 118 | void setvareq(char *, int); |
| | 119 | struct arglist; |
| | 120 | void listsetvar(struct arglist *, int); |
| | 121 | char *lookupvar(const char *); |
| | 122 | char *bltinlookup(const char *, int); |
| | 123 | void bltinsetlocale(void); |
| | 124 | void bltinunsetlocale(void); |
| | 125 | void updatecharset(void); |
| | 126 | void initcharset(void); |
| | 127 | char **environment(void); |
| | 128 | int showvarscmd(int, char **); |
| | 129 | void mklocal(char *); |
| | 130 | void poplocalvars(void); |
| | 131 | int unsetvar(const char *); |
| | 132 | int setvarsafe(const char *, const char *, int); |
projects / apple / shell_cmds.git / blame_incremental