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Diffstat (limited to 'src/kash/var.h')
| -rw-r--r-- | src/kash/var.h | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/src/kash/var.h b/src/kash/var.h new file mode 100644 index 0000000..b524398 --- /dev/null +++ b/src/kash/var.h @@ -0,0 +1,153 @@ +/* $NetBSD: var.h,v 1.23 2004/10/02 12:16:53 dsl 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. 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 + */ + +#ifndef ___var_h___ +#define ___var_h___ + +/* + * Shell variables. + */ + +/* flags */ +#define VEXPORT 0x01 /* variable is exported */ +#define VREADONLY 0x02 /* variable cannot be modified */ +#define VSTRFIXED 0x04 /* variable struct is statically allocated */ +#define VTEXTFIXED 0x08 /* text is statically allocated */ +#define VSTACK 0x10 /* text is allocated on the stack */ +#define VUNSET 0x20 /* the variable is not set */ +#define VNOFUNC 0x40 /* don't call the callback function */ +#define VNOSET 0x80 /* do not set variable - just readonly test */ +#define VSTRFIXED2 0x4000 /* variable struct is in the shinstance, cannot be freed. (VSTRFIXED is mixed up in local vars) */ +#ifdef PC_OS2_LIBPATHS +#define VOS2LIBPATH 0x8000 /* OS/2 LIBPATH related variable. */ +#endif + + +struct var { + struct var *next; /* next entry in hash list */ + int flags; /* flags are defined above */ + char *text; /* name=value */ + int name_len; /* length of name */ + void (*func)(struct shinstance *, const char *); + /* function to be called when */ + /* the variable gets set/unset */ +}; + + +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; +#ifdef _MSC_VER +extern struct var vpath2; +#endif +extern struct var vps1; +extern struct var vps2; +extern struct var vps4; +#ifndef SMALL +extern struct var vterm; +extern struct var vtermcap; +extern struct var vhistsize; +#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(psh) ((psh)->vifs.text + 4) +#define ifsset(psh) (((psh)->vifs.flags & VUNSET) == 0) +#define mailval(psh) ((psh)->vmail.text + 5) +#define mpathval(psh) ((psh)->vmpath.text + 9) +#ifdef _MSC_VER +# define pathval(psh) ((psh)->vpath.text[5] || !(psh)->vpath2.text ? &(psh)->vpath.text[5] : &(psh)->vpath2.text[5]) +#else +# define pathval(psh) ((psh)->vpath.text + 5) +#endif +#define ps1val(psh) ((psh)->vps1.text + 4) +#define ps2val(psh) ((psh)->vps2.text + 4) +#define ps4val(psh) ((psh)->vps4.text + 4) +#define optindval(psh) ((psh)->voptind.text + 7) +#ifndef SMALL +#define histsizeval(psh) ((psh)->vhistsize.text + 9) +#define termval(psh) ((psh)->vterm.text + 5) +#endif + +#if ATTY +#define attyset(psh) (((psh)->vatty.flags & VUNSET) == 0) +#endif +#define mpathset(psh) (((psh)->vmpath.flags & VUNSET) == 0) + +void initvar(struct shinstance *); +#ifndef SH_FORKED_MODE +void subshellinitvar(shinstance *, shinstance *); +#endif +void setvar(struct shinstance *, const char *, const char *, int); +void setvareq(struct shinstance *, char *, int); +struct strlist; +void listsetvar(struct shinstance *, struct strlist *, int); +char *lookupvar(struct shinstance *, const char *); +char *bltinlookup(struct shinstance *, const char *, int); +char **environment(struct shinstance *); +void shprocvar(struct shinstance *); +int showvars(struct shinstance *, const char *, int, int); +int exportcmd(struct shinstance *, int, char **); +int localcmd(struct shinstance *, int, char **); +void mklocal(struct shinstance *, const char *, int); +void listmklocal(struct shinstance *, struct strlist *, int); +void poplocalvars(struct shinstance *); +int setvarcmd(struct shinstance *, int, char **); +int unsetcmd(struct shinstance *, int, char **); +int unsetvar(struct shinstance *, const char *, int); +int setvarsafe(struct shinstance *, const char *, const char *, int); +void print_quoted(struct shinstance *, const char *); + +#endif |