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author | Kiyoshi Aman <kiyoshi.aman+adelie@gmail.com> | 2019-02-01 22:55:37 +0000 |
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committer | Kiyoshi Aman <kiyoshi.aman+adelie@gmail.com> | 2019-02-03 18:22:05 -0600 |
commit | 5b57d28ffb6e1ef86b50f7d05d977826eae89bfe (patch) | |
tree | 154a22fe556b49e6927197336f8bf91b12eacd5e /bin/sh/var.h | |
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initial population
Diffstat (limited to 'bin/sh/var.h')
-rw-r--r-- | bin/sh/var.h | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/bin/sh/var.h b/bin/sh/var.h new file mode 100644 index 0000000..43bef4b --- /dev/null +++ b/bin/sh/var.h @@ -0,0 +1,151 @@ +/* $NetBSD: var.h,v 1.38 2018/12/04 14:03:30 kre 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 VUNSET /* double include protection */ +/* + * Shell variables. + */ + +/* flags */ +#define VUNSET 0x0001 /* the variable is not set */ +#define VEXPORT 0x0002 /* variable is exported */ +#define VREADONLY 0x0004 /* variable cannot be modified */ +#define VNOEXPORT 0x0008 /* variable may not be exported */ + +#define VSTRFIXED 0x0010 /* variable struct is statically allocated */ +#define VTEXTFIXED 0x0020 /* text is statically allocated */ +#define VSTACK 0x0040 /* text is allocated on the stack */ +#define VNOFUNC 0x0100 /* don't call the callback function */ +#define VFUNCREF 0x0200 /* the function is called on ref, not set */ + +#define VSPECIAL 0x1000 /* magic properties not lost when set */ +#define VDOEXPORT 0x2000 /* obey VEXPORT even if VNOEXPORT */ +#define VNOSET 0x4000 /* do not set variable - just readonly test */ +#define VNOERROR 0x8000 /* be quiet if set fails (no error msg) */ + +struct var; + +union var_func_union { /* function to be called when: */ + void (*set_func)(const char *); /* variable gets set/unset */ + char*(*ref_func)(struct var *); /* variable is referenced */ +}; + +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 */ + union var_func_union v_u; /* function to apply (sometimes) */ +}; + + +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 */ + union var_func_union v_u; /* saved function */ +}; + + +extern struct localvar *localvars; + +extern struct var vifs; +extern char ifs_default[]; +extern struct var vmail; +extern struct var vmpath; +extern struct var vpath; +extern struct var vps1; +extern struct var vps2; +extern struct var vps4; +extern struct var line_num; +#ifndef SMALL +extern struct var editrc; +extern struct var vterm; +extern struct var vtermcap; +extern struct var vhistsize; +extern struct var ps_lit; +extern struct var euname; +extern struct var random_num; +extern intmax_t sh_start_time; +#endif + +extern int line_number; +extern int funclinebase; +extern int funclineabs; + +/* + * 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 ifsset() ((vifs.flags & VUNSET) == 0) +#define ifsval() (ifsset() ? (vifs.text + 4) : ifs_default) +#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) +#define ps4val() (vps4.text + 4) +#define optindval() (voptind.text + 7) +#ifndef SMALL +#define histsizeval() (vhistsize.text + 9) +#define termval() (vterm.text + 5) +#endif + +#define mpathset() ((vmpath.flags & VUNSET) == 0) + +void initvar(void); +void setvar(const char *, const char *, int); +void setvareq(char *, int); +struct strlist; +void listsetvar(struct strlist *, int); +char *lookupvar(const char *); +char *bltinlookup(const char *, int); +char **environment(void); +void shprocvar(void); +int showvars(const char *, int, int, const char *); +void mklocal(const char *, int); +void listmklocal(struct strlist *, int); +void poplocalvars(void); +int unsetvar(const char *, int); +void choose_ps1(void); +int setvarsafe(const char *, const char *, int); +void print_quoted(const char *); +int validname(const char *, int, int *); + +#endif |