openenvutils/commandshell/shell/src/options.c
author William Roberts <williamr@symbian.org>
Fri, 23 Apr 2010 14:37:17 +0100
branchRCL_3
changeset 22 c82a39b81a38
parent 4 0fdb7f6b0309
permissions -rw-r--r--
Rework addition of Symbian splash screen to reduce the source impact (uses SVG from Bug 2414) Notes: by using the OPTION SOURCEDIR parameter in the mifconv extension instructions, I can arrange to use the same source file name in sfimage, without having to export over the original Nokia file. This means that the name inside splashscreen.mbg is the same, which removes the need for the conditional compilation in SplashScreen.cpp, and gets rid of sf_splashscreen.mmp.

/*
* Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of "Eclipse Public License v1.0"
* which accompanies this distribution, and is available
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description:
*
*/


/*
 * This file is part of zsh, the Z shell.
 *
 * Copyright (c) 1992-1997 Paul Falstad
 * All rights reserved.
 *
 * Permission is hereby granted, without written agreement and without
 * license or royalty fees, to use, copy, modify, and distribute this
 * software and to distribute modified versions of this software for any
 * purpose, provided that the above copyright notice and the following
 * two paragraphs appear in all copies of this software.
 *
 * In no event shall Paul Falstad or the Zsh Development Group be liable
 * to any party for direct, indirect, special, incidental, or consequential
 * damages arising out of the use of this software and its documentation,
 * even if Paul Falstad and the Zsh Development Group have been advised of
 * the possibility of such damage.
 *
 * Paul Falstad and the Zsh Development Group specifically disclaim any
 * warranties, including, but not limited to, the implied warranties of
 * merchantability and fitness for a particular purpose.  The software
 * provided hereunder is on an "as is" basis, and Paul Falstad and the
 * Zsh Development Group have no obligation to provide maintenance,
 * support, updates, enhancements, or modifications.
 *
 */
#include "zsh.mdh"
#include "options.pro"

#ifdef __SYMBIAN32__
#ifdef __WINSCW__
#pragma warn_unusedarg off
#endif//__WINSCW__
#endif//__SYMBIAN32__

/* current emulation (used to decide which set of option letters is used) */

/**/
int emulation;
 
/* the options; e.g. if opts[SHGLOB] != 0, SH_GLOB is turned on */
 
/**/
mod_export char opts[OPT_SIZE];
 
/* Option name hash table */

/**/
mod_export HashTable optiontab;
 
/* The canonical option name table */

#define OPT_CSH		EMULATE_CSH
#define OPT_KSH		EMULATE_KSH
#define OPT_SH		EMULATE_SH
#define OPT_ZSH		EMULATE_ZSH

#define OPT_ALL		(OPT_CSH|OPT_KSH|OPT_SH|OPT_ZSH)
#define OPT_BOURNE	(OPT_KSH|OPT_SH)
#define OPT_BSHELL	(OPT_KSH|OPT_SH|OPT_ZSH)
#define OPT_NONBOURNE	(OPT_ALL & ~OPT_BOURNE)
#define OPT_NONZSH	(OPT_ALL & ~OPT_ZSH)

#define OPT_EMULATE	(1<<5)	/* option is relevant to emulation */
#define OPT_SPECIAL	(1<<6)	/* option should never be set by emulate() */
#define OPT_ALIAS	(1<<7)	/* option is an alias to an other option */

#define defset(X) (!!((X)->flags & emulation))

/*
 * Note that option names should usually be fewer than 20 characters long
 * to avoid formatting problems.
 */
static struct optname optns[] = {
{NULL, "aliases",	      OPT_EMULATE|OPT_ALL,	 ALIASESOPT},
{NULL, "allexport",	      OPT_EMULATE,		 ALLEXPORT},
{NULL, "alwayslastprompt",    OPT_ALL,			 ALWAYSLASTPROMPT},
{NULL, "alwaystoend",	      0,			 ALWAYSTOEND},
{NULL, "appendhistory",	      OPT_ALL,			 APPENDHISTORY},
{NULL, "autocd",	      OPT_EMULATE,		 AUTOCD},
{NULL, "autocontinue",	      0,			 AUTOCONTINUE},
{NULL, "autolist",	      OPT_ALL,			 AUTOLIST},
{NULL, "automenu",	      OPT_ALL,			 AUTOMENU},
{NULL, "autonamedirs",	      0,			 AUTONAMEDIRS},
{NULL, "autoparamkeys",	      OPT_ALL,			 AUTOPARAMKEYS},
{NULL, "autoparamslash",      OPT_ALL,			 AUTOPARAMSLASH},
{NULL, "autopushd",	      0,			 AUTOPUSHD},
{NULL, "autoremoveslash",     OPT_ALL,			 AUTOREMOVESLASH},
{NULL, "autoresume",	      0,			 AUTORESUME},
{NULL, "badpattern",	      OPT_EMULATE|OPT_NONBOURNE, BADPATTERN},
{NULL, "banghist",	      OPT_NONBOURNE,		 BANGHIST},
{NULL, "bareglobqual",        OPT_EMULATE|OPT_ZSH,       BAREGLOBQUAL},
{NULL, "bashautolist",	      0,                         BASHAUTOLIST},
{NULL, "beep",		      OPT_ALL,			 BEEP},
{NULL, "bgnice",	      OPT_EMULATE|OPT_NONBOURNE, BGNICE},
{NULL, "braceccl",	      OPT_EMULATE,		 BRACECCL},
{NULL, "bsdecho",	      OPT_EMULATE|OPT_SH,	 BSDECHO},
{NULL, "caseglob",	      OPT_ALL,			 CASEGLOB},
{NULL, "cbases",	      0,			 CBASES},
{NULL, "cdablevars",	      OPT_EMULATE,		 CDABLEVARS},
{NULL, "chasedots",	      OPT_EMULATE,		 CHASEDOTS},
{NULL, "chaselinks",	      OPT_EMULATE,		 CHASELINKS},
{NULL, "checkjobs",	      OPT_EMULATE|OPT_ZSH,	 CHECKJOBS},
{NULL, "clobber",	      OPT_EMULATE|OPT_ALL,	 CLOBBER},
{NULL, "completealiases",     0,			 COMPLETEALIASES},
{NULL, "completeinword",      0,			 COMPLETEINWORD},
{NULL, "correct",	      0,			 CORRECT},
{NULL, "correctall",	      0,			 CORRECTALL},
{NULL, "cshjunkiehistory",    OPT_EMULATE|OPT_CSH,	 CSHJUNKIEHISTORY},
{NULL, "cshjunkieloops",      OPT_EMULATE|OPT_CSH,	 CSHJUNKIELOOPS},
{NULL, "cshjunkiequotes",     OPT_EMULATE|OPT_CSH,	 CSHJUNKIEQUOTES},
{NULL, "cshnullcmd",	      OPT_EMULATE|OPT_CSH,	 CSHNULLCMD},
{NULL, "cshnullglob",	      OPT_EMULATE|OPT_CSH,	 CSHNULLGLOB},
{NULL, "emacs",		      0,			 EMACSMODE},
{NULL, "equals",	      OPT_EMULATE|OPT_ZSH,	 EQUALS},
{NULL, "errexit",	      OPT_EMULATE,		 ERREXIT},
{NULL, "errreturn",	      OPT_EMULATE,		 ERRRETURN},
{NULL, "exec",		      OPT_ALL,			 EXECOPT},
{NULL, "extendedglob",	      OPT_EMULATE,		 EXTENDEDGLOB},
{NULL, "extendedhistory",     OPT_CSH,			 EXTENDEDHISTORY},
{NULL, "evallineno",	      OPT_EMULATE|OPT_ZSH,	 EVALLINENO},
{NULL, "flowcontrol",	      OPT_ALL,			 FLOWCONTROL},
{NULL, "functionargzero",     OPT_EMULATE|OPT_NONBOURNE, FUNCTIONARGZERO},
{NULL, "glob",		      OPT_EMULATE|OPT_ALL,	 GLOBOPT},
{NULL, "globalexport",        OPT_EMULATE|OPT_ZSH,	 GLOBALEXPORT},
{NULL, "globalrcs",           OPT_ALL,			 GLOBALRCS},
{NULL, "globassign",	      OPT_EMULATE|OPT_CSH,	 GLOBASSIGN},
{NULL, "globcomplete",	      0,			 GLOBCOMPLETE},
{NULL, "globdots",	      OPT_EMULATE,		 GLOBDOTS},
{NULL, "globsubst",	      OPT_EMULATE|OPT_NONZSH,	 GLOBSUBST},
{NULL, "hashcmds",	      OPT_ALL,			 HASHCMDS},
{NULL, "hashdirs",	      OPT_ALL,			 HASHDIRS},
{NULL, "hashlistall",	      OPT_ALL,			 HASHLISTALL},
{NULL, "histallowclobber",    0,			 HISTALLOWCLOBBER},
{NULL, "histbeep",	      OPT_ALL,			 HISTBEEP},
{NULL, "histexpiredupsfirst", 0,			 HISTEXPIREDUPSFIRST},
{NULL, "histfindnodups",      0,			 HISTFINDNODUPS},
{NULL, "histignorealldups",   0,			 HISTIGNOREALLDUPS},
{NULL, "histignoredups",      0,			 HISTIGNOREDUPS},
{NULL, "histignorespace",     0,			 HISTIGNORESPACE},
{NULL, "histnofunctions",     0,			 HISTNOFUNCTIONS},
{NULL, "histnostore",	      0,			 HISTNOSTORE},
{NULL, "histreduceblanks",    0,			 HISTREDUCEBLANKS},
{NULL, "histsavenodups",      0,			 HISTSAVENODUPS},
{NULL, "histverify",	      0,			 HISTVERIFY},
{NULL, "hup",		      OPT_EMULATE|OPT_ZSH,	 HUP},
{NULL, "ignorebraces",	      OPT_EMULATE|OPT_SH,	 IGNOREBRACES},
{NULL, "ignoreeof",	      0,			 IGNOREEOF},
{NULL, "incappendhistory",    0,			 INCAPPENDHISTORY},
{NULL, "interactive",	      OPT_SPECIAL,		 INTERACTIVE},
{NULL, "interactivecomments", OPT_BOURNE,		 INTERACTIVECOMMENTS},
{NULL, "ksharrays",	      OPT_EMULATE|OPT_BOURNE,	 KSHARRAYS},
{NULL, "kshautoload",	      OPT_EMULATE|OPT_BOURNE,	 KSHAUTOLOAD},
{NULL, "kshglob",             OPT_EMULATE|OPT_KSH,       KSHGLOB},
{NULL, "kshoptionprint",      OPT_EMULATE|OPT_KSH,	 KSHOPTIONPRINT},
{NULL, "kshtypeset",          OPT_EMULATE|OPT_KSH,	 KSHTYPESET},
{NULL, "listambiguous",	      OPT_ALL,			 LISTAMBIGUOUS},
{NULL, "listbeep",	      OPT_ALL,			 LISTBEEP},
{NULL, "listpacked",	      0,			 LISTPACKED},
{NULL, "listrowsfirst",	      0,			 LISTROWSFIRST},
{NULL, "listtypes",	      OPT_ALL,			 LISTTYPES},
{NULL, "localoptions",	      OPT_EMULATE|OPT_KSH,	 LOCALOPTIONS},
{NULL, "localtraps",	      OPT_EMULATE|OPT_KSH,	 LOCALTRAPS},
{NULL, "login",		      OPT_SPECIAL,		 LOGINSHELL},
{NULL, "longlistjobs",	      0,			 LONGLISTJOBS},
{NULL, "magicequalsubst",     OPT_EMULATE,		 MAGICEQUALSUBST},
{NULL, "mailwarning",	      0,			 MAILWARNING},
{NULL, "markdirs",	      0,			 MARKDIRS},
{NULL, "menucomplete",	      0,			 MENUCOMPLETE},
{NULL, "monitor",	      OPT_SPECIAL,		 MONITOR},
{NULL, "multios",	      OPT_EMULATE|OPT_ZSH,	 MULTIOS},
{NULL, "nomatch",	      OPT_EMULATE|OPT_NONBOURNE, NOMATCH},
{NULL, "notify",	      OPT_ZSH,			 NOTIFY},
{NULL, "nullglob",	      OPT_EMULATE,		 NULLGLOB},
{NULL, "numericglobsort",     OPT_EMULATE,		 NUMERICGLOBSORT},
{NULL, "octalzeroes",         OPT_EMULATE|OPT_SH,	 OCTALZEROES},
{NULL, "overstrike",	      0,			 OVERSTRIKE},
{NULL, "pathdirs",	      OPT_EMULATE,		 PATHDIRS},
{NULL, "posixbuiltins",	      OPT_EMULATE|OPT_BOURNE,	 POSIXBUILTINS},
{NULL, "printeightbit",       0,                         PRINTEIGHTBIT},
{NULL, "printexitvalue",      0,			 PRINTEXITVALUE},
{NULL, "privileged",	      OPT_SPECIAL,		 PRIVILEGED},
{NULL, "promptbang",	      OPT_KSH,			 PROMPTBANG},
{NULL, "promptcr",	      OPT_ALL,			 PROMPTCR},
{NULL, "promptpercent",	      OPT_NONBOURNE,		 PROMPTPERCENT},
{NULL, "promptsubst",	      OPT_KSH,			 PROMPTSUBST},
{NULL, "pushdignoredups",     OPT_EMULATE,		 PUSHDIGNOREDUPS},
{NULL, "pushdminus",	      OPT_EMULATE,		 PUSHDMINUS},
{NULL, "pushdsilent",	      0,			 PUSHDSILENT},
{NULL, "pushdtohome",	      OPT_EMULATE,		 PUSHDTOHOME},
{NULL, "rcexpandparam",	      OPT_EMULATE,		 RCEXPANDPARAM},
{NULL, "rcquotes",	      OPT_EMULATE,		 RCQUOTES},
{NULL, "rcs",		      OPT_ALL,			 RCS},
{NULL, "recexact",	      0,			 RECEXACT},
{NULL, "restricted",	      OPT_SPECIAL,		 RESTRICTED},
{NULL, "rmstarsilent",	      OPT_BOURNE,		 RMSTARSILENT},
{NULL, "rmstarwait",	      0,			 RMSTARWAIT},
{NULL, "sharehistory",	      OPT_KSH,			 SHAREHISTORY},
{NULL, "shfileexpansion",     OPT_EMULATE|OPT_BOURNE,	 SHFILEEXPANSION},
{NULL, "shglob",	      OPT_EMULATE|OPT_BOURNE,	 SHGLOB},
{NULL, "shinstdin",	      OPT_SPECIAL,		 SHINSTDIN},
{NULL, "shnullcmd",           OPT_EMULATE|OPT_BOURNE,	 SHNULLCMD},
{NULL, "shoptionletters",     OPT_EMULATE|OPT_BOURNE,	 SHOPTIONLETTERS},
{NULL, "shortloops",	      OPT_EMULATE|OPT_NONBOURNE, SHORTLOOPS},
{NULL, "shwordsplit",	      OPT_EMULATE|OPT_BOURNE,	 SHWORDSPLIT},
{NULL, "singlecommand",	      OPT_SPECIAL,		 SINGLECOMMAND},
{NULL, "singlelinezle",	      OPT_KSH,			 SINGLELINEZLE},
{NULL, "sunkeyboardhack",     0,			 SUNKEYBOARDHACK},
{NULL, "transientrprompt",    0,			 TRANSIENTRPROMPT},
{NULL, "trapsasync",	      0,			 TRAPSASYNC},
{NULL, "typesetsilent",	      OPT_EMULATE|OPT_BOURNE,	 TYPESETSILENT},
{NULL, "unset",		      OPT_EMULATE|OPT_BSHELL,	 UNSET},
{NULL, "verbose",	      0,			 VERBOSE},
{NULL, "vi",		      0,			 VIMODE},
{NULL, "xtrace",	      0,			 XTRACE},
{NULL, "zle",		      OPT_SPECIAL,		 USEZLE},
{NULL, "braceexpand",	      OPT_ALIAS, /* ksh/bash */	 -IGNOREBRACES},
{NULL, "dotglob",	      OPT_ALIAS, /* bash */	 GLOBDOTS},
{NULL, "hashall",	      OPT_ALIAS, /* bash */	 HASHCMDS},
{NULL, "histappend",	      OPT_ALIAS, /* bash */	 APPENDHISTORY},
{NULL, "histexpand",	      OPT_ALIAS, /* bash */	 BANGHIST},
{NULL, "log",		      OPT_ALIAS, /* ksh */	 -HISTNOFUNCTIONS},
{NULL, "mailwarn",	      OPT_ALIAS, /* bash */	 MAILWARNING},
{NULL, "onecmd",	      OPT_ALIAS, /* bash */	 SINGLECOMMAND},
{NULL, "physical",	      OPT_ALIAS, /* ksh/bash */	 CHASELINKS},
{NULL, "promptvars",	      OPT_ALIAS, /* bash */	 PROMPTSUBST},
{NULL, "stdin",		      OPT_ALIAS, /* ksh */	 SHINSTDIN},
{NULL, "trackall",	      OPT_ALIAS, /* ksh */	 HASHCMDS},
{NULL, "dvorak",	      0,			 DVORAK},
{NULL, NULL, 0, 0}
};

/* Option letters */

#define optletters (isset(SHOPTIONLETTERS) ? kshletters : zshletters)

#define FIRST_OPT '0'
#define LAST_OPT 'y'

static short zshletters[LAST_OPT - FIRST_OPT + 1] = {
    /* 0 */  CORRECT,
    /* 1 */  PRINTEXITVALUE,
    /* 2 */ -BADPATTERN,
    /* 3 */ -NOMATCH,
    /* 4 */  GLOBDOTS,
    /* 5 */  NOTIFY,
    /* 6 */  BGNICE,
    /* 7 */  IGNOREEOF,
    /* 8 */  MARKDIRS,
    /* 9 */  AUTOLIST,
    /* : */  0,
    /* ; */  0,
    /* < */  0,
    /* = */  0,
    /* > */  0,
    /* ? */  0,
    /* @ */  0,
    /* A */  0,			/* use with set for arrays */
    /* B */ -BEEP,
    /* C */ -CLOBBER,
    /* D */  PUSHDTOHOME,
    /* E */  PUSHDSILENT,
    /* F */ -GLOBOPT,
    /* G */  NULLGLOB,
    /* H */  RMSTARSILENT,
    /* I */  IGNOREBRACES,
    /* J */  AUTOCD,
    /* K */ -BANGHIST,
    /* L */  SUNKEYBOARDHACK,
    /* M */  SINGLELINEZLE,
    /* N */  AUTOPUSHD,
    /* O */  CORRECTALL,
    /* P */  RCEXPANDPARAM,
    /* Q */  PATHDIRS,
    /* R */  LONGLISTJOBS,
    /* S */  RECEXACT,
    /* T */  CDABLEVARS,
    /* U */  MAILWARNING,
    /* V */ -PROMPTCR,
    /* W */  AUTORESUME,
    /* X */  LISTTYPES,
    /* Y */  MENUCOMPLETE,
    /* Z */  USEZLE,
    /* [ */  0,
    /* \ */  0,
    /* ] */  0,
    /* ^ */  0,
    /* _ */  0,
    /* ` */  0,
    /* a */  ALLEXPORT,
    /* b */  0,			/* in non-Bourne shells, end of options */
    /* c */  0,			/* command follows */
    /* d */ -GLOBALRCS,
    /* e */  ERREXIT,
    /* f */ -RCS,
    /* g */  HISTIGNORESPACE,
    /* h */  HISTIGNOREDUPS,
    /* i */  INTERACTIVE,
    /* j */  0,
    /* k */  INTERACTIVECOMMENTS,
    /* l */  LOGINSHELL,
    /* m */  MONITOR,
    /* n */ -EXECOPT,
    /* o */  0,			/* long option name follows */
    /* p */  PRIVILEGED,
    /* q */  0,
    /* r */  RESTRICTED,
    /* s */  SHINSTDIN,
    /* t */  SINGLECOMMAND,
    /* u */ -UNSET,
    /* v */  VERBOSE,
    /* w */  CHASELINKS,
    /* x */  XTRACE,
    /* y */  SHWORDSPLIT,
};

static short kshletters[LAST_OPT - FIRST_OPT + 1] = {
    /* 0 */  0,
    /* 1 */  0,
    /* 2 */  0,
    /* 3 */  0,
    /* 4 */  0,
    /* 5 */  0,
    /* 6 */  0,
    /* 7 */  0,
    /* 8 */  0,
    /* 9 */  0,
    /* : */  0,
    /* ; */  0,
    /* < */  0,
    /* = */  0,
    /* > */  0,
    /* ? */  0,
    /* @ */  0,
    /* A */  0,
    /* B */  0,
    /* C */ -CLOBBER,
    /* D */  0,
    /* E */  0,
    /* F */  0,
    /* G */  0,
    /* H */  0,
    /* I */  0,
    /* J */  0,
    /* K */  0,
    /* L */  0,
    /* M */  0,
    /* N */  0,
    /* O */  0,
    /* P */  0,
    /* Q */  0,
    /* R */  0,
    /* S */  0,
    /* T */  TRAPSASYNC,
    /* U */  0,
    /* V */  0,
    /* W */  0,
    /* X */  MARKDIRS,
    /* Y */  0,
    /* Z */  0,
    /* [ */  0,
    /* \ */  0,
    /* ] */  0,
    /* ^ */  0,
    /* _ */  0,
    /* ` */  0,
    /* a */  ALLEXPORT,
    /* b */  NOTIFY,
    /* c */  0,
    /* d */  0,
    /* e */  ERREXIT,
    /* f */ -GLOBOPT,
    /* g */  0,
    /* h */  0,
    /* i */  INTERACTIVE,
    /* j */  0,
    /* k */  0,
    /* l */  LOGINSHELL,
    /* m */  MONITOR,
    /* n */ -EXECOPT,
    /* o */  0,
    /* p */  PRIVILEGED,
    /* q */  0,
    /* r */  RESTRICTED,
    /* s */  SHINSTDIN,
    /* t */  SINGLECOMMAND,
    /* u */ -UNSET,
    /* v */  VERBOSE,
    /* w */  0,
    /* x */  XTRACE,
    /* y */  0,
};

/* Initialisation of the option name hash table */

/**/
static void
printoptionnode(HashNode hn, int set)
{
    Optname on = (Optname) hn;
    int optno = on->optno;

    if (optno < 0)
	optno = -optno;
    if (isset(KSHOPTIONPRINT)) {
	if (defset(on))
	    printf("no%-19s %s\n", on->nam, isset(optno) ? "off" : "on");
	else
	    printf("%-21s %s\n", on->nam, isset(optno) ? "on" : "off");
    } else if (set == (isset(optno) ^ defset(on))) {
	if (set ^ isset(optno))
	    fputs("no", stdout);
	puts(on->nam);
    }
}

/**/
void
createoptiontable(void)
{
    Optname on;

    optiontab = newhashtable(101, "optiontab", NULL);

    optiontab->hash        = hasher;
    optiontab->emptytable  = NULL;
    optiontab->filltable   = NULL;
    optiontab->cmpnodes    = strcmp;
    optiontab->addnode     = addhashnode;
    optiontab->getnode     = gethashnode;
    optiontab->getnode2    = gethashnode2;
    optiontab->removenode  = NULL;
    optiontab->disablenode = disablehashnode;
    optiontab->enablenode  = enablehashnode;
    optiontab->freenode    = NULL;
    optiontab->printnode   = printoptionnode;

    for (on = optns; on->nam; on++)
	optiontab->addnode(optiontab, on->nam, on);
}

/* Setting of default options */

/**/
static void
setemulate(HashNode hn, int fully)
{
    Optname on = (Optname) hn;

    /* Set options: each non-special option is set according to the *
     * current emulation mode if either it is considered relevant   *
     * to emulation or we are doing a full emulation (as indicated  *
     * by the `fully' parameter).                                   */
    if (!(on->flags & OPT_ALIAS) &&
	((fully && !(on->flags & OPT_SPECIAL)) ||
	 (on->flags & OPT_EMULATE)))
	opts[on->optno] = defset(on);
}

/**/
void
emulate(const char *zsh_name, int fully)
{
    char ch = *zsh_name;

    if (ch == 'r')
	ch = zsh_name[1];

    /* Work out the new emulation mode */
    if (ch == 'c')
	emulation = EMULATE_CSH;
    else if (ch == 'k')
	emulation = EMULATE_KSH;
    else if (ch == 's' || ch == 'b')
	emulation = EMULATE_SH;
    else
	emulation = EMULATE_ZSH;

    scanhashtable(optiontab, 0, 0, 0, setemulate, fully);
}

/* setopt, unsetopt */

/**/
static void
setoption(HashNode hn, int value)
{
    dosetopt(((Optname) hn)->optno, value, 0);
}

/**/
int
bin_setopt(char *nam, char **args, UNUSED(Options ops), int isun)
{
    int action, optno, match = 0;

    /* With no arguments or options, display options. */
    if (!*args) {
	scanhashtable(optiontab, 1, 0, OPT_ALIAS, optiontab->printnode, !isun);
	return 0;
    }

    /* loop through command line options (begins with "-" or "+") */
    while (*args && (**args == '-' || **args == '+')) {
	action = (**args == '-') ^ isun;
	if(!args[0][1])
	    *args = "--";
	while (*++*args) {
	    if(**args == Meta)
		*++*args ^= 32;
	    /* The pseudo-option `--' signifies the end of options. */
	    if (**args == '-') {
		args++;
		goto doneoptions;
	    } else if (**args == 'o') {
		if (!*++*args)
		    args++;
		if (!*args) {
		    zwarnnam(nam, "string expected after -o", NULL, 0);
		    inittyptab();
		    return 1;
		}
		if(!(optno = optlookup(*args)))
		    zwarnnam(nam, "no such option: %s", *args, 0);
		else if(dosetopt(optno, action, 0))
		    zwarnnam(nam, "can't change option: %s", *args, 0);
		break;
	    } else if(**args == 'm') {
		match = 1;
	    } else {
	    	if (!(optno = optlookupc(**args)))
		    zwarnnam(nam, "bad option: -%c", NULL, **args);
		else if(dosetopt(optno, action, 0))
		    zwarnnam(nam, "can't change option: -%c", NULL, **args);
	    }
	}
	args++;
    }
    doneoptions:

    if (!match) {
	/* Not globbing the arguments -- arguments are simply option names. */
	while (*args) {
	    if(!(optno = optlookup(*args++)))
		zwarnnam(nam, "no such option: %s", args[-1], 0);
	    else if(dosetopt(optno, !isun, 0))
		zwarnnam(nam, "can't change option: %s", args[-1], 0);
	}
    } else {
	/* Globbing option (-m) set. */
	while (*args) {
	    Patprog pprog;
	    char *s, *t;

	    t = s = dupstring(*args);
	    while (*t)
		if (*t == '_')
		    chuck(t);
		else {
		    *t = tulower(*t);
		    t++;
		}

	    /* Expand the current arg. */
	    tokenize(s);
	    if (!(pprog = patcompile(s, PAT_STATIC, NULL))) {
		zwarnnam(nam, "bad pattern: %s", *args, 0);
		continue;
	    }
	    /* Loop over expansions. */
	    scanmatchtable(optiontab, pprog, 0, OPT_ALIAS, setoption, !isun);
	    args++;
	}
    }
    inittyptab();
    return 0;
}

/* Identify an option name */

/**/
mod_export int
optlookup(char const *name)
{
    char *s, *t;
    Optname n;

    s = t = dupstring(name);

    /* exorcise underscores, and change to lowercase */
    while (*t)
	if (*t == '_')
	    chuck(t);
	else {
	    *t = tulower(*t);
	    t++;
	}

    /* look up name in the table */
    if (s[0] == 'n' && s[1] == 'o' &&
	(n = (Optname) optiontab->getnode(optiontab, s + 2))) {
	return -n->optno;
    } else if ((n = (Optname) optiontab->getnode(optiontab, s)))
	return n->optno;
    else
	return OPT_INVALID;
}

/* Identify an option letter */

/**/
int
optlookupc(char c)
{
    if(c < FIRST_OPT || c > LAST_OPT)
	return 0;

    return optletters[c - FIRST_OPT];
}

/**/
static void
restrictparam(char *nam)
{
    Param pm = (Param) paramtab->getnode(paramtab, nam);

    if (pm) {
	pm->flags |= PM_SPECIAL | PM_RESTRICTED;
	return;
    }
    createparam(nam, PM_SCALAR | PM_UNSET | PM_SPECIAL | PM_RESTRICTED);
}

/* list of restricted parameters which are not otherwise special */
static char *rparams[] = {
    "SHELL", "HISTFILE", "LD_LIBRARY_PATH", "LD_AOUT_LIBRARY_PATH",
    "LD_PRELOAD", "LD_AOUT_PRELOAD", NULL
};

/* Set or unset an option, as a result of user request.  The option *
 * number may be negative, indicating that the sense is reversed    *
 * from the usual meaning of the option.                            */

/**/
mod_export int
dosetopt(int optno, int value, int force)
{
    if(!optno)
	return -1;
    if(optno < 0) {
	optno = -optno;
	value = !value;
    }
    if (optno == RESTRICTED) {
	if (isset(RESTRICTED))
	    return value ? 0 : -1;
	if (value) {
	    char **s;

	    for (s = rparams; *s; s++)
		restrictparam(*s);
	}
    } else if(!force && optno == EXECOPT && !value && interact) {
	/* cannot set noexec when interactive */
	return -1;
    } else if(!force && (optno == INTERACTIVE || optno == SHINSTDIN ||
	    optno == SINGLECOMMAND)) {
	if (opts[optno] == value)
	    return 0;
	/* it is not permitted to change the value of these options */
	return -1;
    } else if(!force && optno == USEZLE && value) {
	/* we require a terminal in order to use ZLE */
	if(!interact || SHTTY == -1 || !shout)
	    return -1;
    } else if(optno == PRIVILEGED && !value) {
	/* unsetting PRIVILEGED causes the shell to make itself unprivileged */
#ifdef HAVE_SETUID
	setuid(getuid());
	setgid(getgid());
#endif /* HAVE_SETUID */
#ifndef JOB_CONTROL
    } else if(optno == MONITOR && value) {
	    return -1;
#endif /* not JOB_CONTROL */
#ifdef GETPWNAM_FAKED
    } else if(optno == CDABLEVARS && value) {
	    return -1;
#endif /* GETPWNAM_FAKED */
    } else if ((optno == EMACSMODE || optno == VIMODE) && value) {
	(*zlesetkeymapptr)(optno);
	opts[(optno == EMACSMODE) ? VIMODE : EMACSMODE] = 0;
    }
    opts[optno] = value;
    if (optno == BANGHIST || optno == SHINSTDIN)
	inittyptab();
    return 0;
}

/* Function to get value for special parameter `-' */

/**/
char *
dashgetfn(UNUSED(Param pm))
{
    static char buf[LAST_OPT - FIRST_OPT + 2];
    char *val = buf;
    int i;

    for(i = 0; i <= LAST_OPT - FIRST_OPT; i++) {
	int optno = optletters[i];
	if(optno && ((optno > 0) ? isset(optno) : unset(-optno)))
	    *val++ = FIRST_OPT + i;
    }
    *val = '\0';
    return buf;
}

/* print options for set -o/+o */

/**/
void
printoptionstates(int hadplus)
{
    scanhashtable(optiontab, 1, 0, OPT_ALIAS, printoptionnodestate, hadplus);
}

/**/
static void
printoptionnodestate(HashNode hn, int hadplus)
{
    Optname on = (Optname) hn;
    int optno = on->optno;

    if (hadplus) {
        if (defset(on) != isset(optno))
	    printf("set -o %s%s\n", defset(on) ? "no" : "", on->nam);
    } else {
	if (defset(on))
	    printf("no%-19s %s\n", on->nam, isset(optno) ? "off" : "on");
	else
	    printf("%-21s %s\n", on->nam, isset(optno) ? "on" : "off");
    }
}

/* Print option list for --help */

/**/
void
printoptionlist(void)
{
    short *lp;
    char c;

    printf("\nNamed options:\n");
    scanhashtable(optiontab, 1, 0, OPT_ALIAS, printoptionlist_printoption, 0);
    printf("\nOption aliases:\n");
    scanhashtable(optiontab, 1, OPT_ALIAS, 0, printoptionlist_printoption, 0);
    printf("\nOption letters:\n");
    for(lp = optletters, c = FIRST_OPT; c <= LAST_OPT; lp++, c++) {
	if(!*lp)
	    continue;
	printf("  -%c  ", c);
	printoptionlist_printequiv(*lp);
    }
}

/**/
static void
printoptionlist_printoption(HashNode hn, UNUSED(int ignored))
{
    Optname on = (Optname) hn;

    if(on->flags & OPT_ALIAS) {
	printf("  --%-19s  ", on->nam);
	printoptionlist_printequiv(on->optno);
    } else
	printf("  --%s\n", on->nam);
}

/**/
static void
printoptionlist_printequiv(int optno)
{
    int isneg = optno < 0;

    optno *= (isneg ? -1 : 1);
    printf("  equivalent to --%s%s\n", isneg ? "no-" : "", optns[optno-1].nam);
}