Usenet 1994 October/usenetsourcesnewsgroupsinfomagicoctober1994disk2.iso/misc/volume18/perl/part06

Internet Message Format | 1991-04-14 | 50.8 KB

From: [e-mail] (Larry Wall)
Newsgroups: comp.sources.misc
Subject: v18i024:  perl - The perl programming language, Part06/36
Message-ID: <[e-mail]>
Date: 15 Apr 91 01:53:44 GMT
Approved: [e-mail]
X-Checksum-Snefru: 8df5aaf0 b41671c9 a7fde89c a0c9781f

Submitted-by: Larry Wall <[e-mail]>
Posting-number: Volume 18, Issue 24
Archive-name: perl/part06

[There are 36 kits for perl version 4.0.]

#! /bin/sh

# Make a new directory for the perl sources, cd to it, and run kits 1
# thru 36 through sh.  When all 36 kits have been run, read README.

echo "This is perl 4.0 kit 6 (of 36).  If kit 6 is complete, the line"
echo '"'"End of kit 6 (of 36)"'" will echo at the end.'
echo ""
export PATH || (echo "You didn't use sh, you clunch." ; kill $$)
mkdir  2>/dev/null
echo Extracting eval.c:AA
sed >eval.c:AA <<'!STUFFY!FUNK!' -e 's/X//'
X/* $RCSfile: eval.c,v $$Revision: 4.0.1.1 $$Date: 91/04/11 17:43:48 $
X *
X *    Copyright (c) 1989, Larry Wall
X *
X *    You may distribute under the terms of the GNU General Public License
X *    as specified in the README file that comes with the perl 3.0 kit.
X *
X * $Log:    eval.c,v $
X * Revision 4.0.1.1  91/04/11  17:43:48  lwall
X * patch1: fixed failed fork to return undef as documented
X * patch1: reduced maximum branch distance in eval.c
X *
X * Revision 4.0  91/03/20  01:16:48  lwall
X * 4.0 baseline.
X *
X */
X
X#include "EXTERN.h"
X#include "perl.h"
X
X#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
X#include <signal.h>
X#endif
X
X#ifdef I_FCNTL
X#include <fcntl.h>
X#endif
X#ifdef I_SYS_FILE
X#include <sys/file.h>
X#endif
X#ifdef I_VFORK
X#   include <vfork.h>
X#endif
X
X#ifdef VOIDSIG
Xstatic void (*ihand)();
Xstatic void (*qhand)();
X#else
Xstatic int (*ihand)();
Xstatic int (*qhand)();
X#endif
X
XARG *debarg;
XSTR str_args;
Xstatic STAB *stab2;
Xstatic STIO *stio;
Xstatic struct lstring *lstr;
Xstatic int old_rschar;
Xstatic int old_rslen;
X
Xdouble sin(), cos(), atan2(), pow();
X
Xchar *getlogin();
X
Xint
Xeval(arg,gimme,sp)
Xregister ARG *arg;
Xint gimme;
Xregister int sp;
X{
X    register STR *str;
X    register int anum;
X    register int optype;
X    register STR **st;
X    int maxarg;
X    double value;
X    register char *tmps;
X    char *tmps2;
X    int argflags;
X    int argtype;
X    union argptr argptr;
X    int arglast[8];    /* highest sp for arg--valid only for non-O_LIST args */
X    unsigned long tmplong;
X    long when;
X    FILE *fp;
X    STR *tmpstr;
X    FCMD *form;
X    STAB *stab;
X    ARRAY *ary;
X    bool assigning = FALSE;
X    double exp(), log(), sqrt(), modf();
X    char *crypt(), *getenv();
X    extern void grow_dlevel();
X
X    if (!arg)
X    goto say_undef;
X    optype = arg->arg_type;
X    maxarg = arg->arg_len;
X    arglast[0] = sp;
X    str = arg->arg_ptr.arg_str;
X    if (sp + maxarg > stack->ary_max)
X    astore(stack, sp + maxarg, Nullstr);
X    st = stack->ary_array;
X
X#ifdef DEBUGGING
X    if (debug) {
X    if (debug & 8) {
X        deb("%s (%lx) %d args:\n",opname[optype],arg,maxarg);
X    }
X    debname[dlevel] = opname[optype][0];
X    debdelim[dlevel] = ':';
X    if (++dlevel >= dlmax)
X        grow_dlevel();
X    }
X#endif
X
X    for (anum = 1; anum <= maxarg; anum++) {
X    argflags = arg[anum].arg_flags;
X    argtype = arg[anum].arg_type;
X    argptr = arg[anum].arg_ptr;
X      re_eval:
X    switch (argtype) {
X    default:
X        st[++sp] = &str_undef;
X#ifdef DEBUGGING
X        tmps = "NULL";
X#endif
X        break;
X    case A_EXPR:
X#ifdef DEBUGGING
X        if (debug & 8) {
X        tmps = "EXPR";
X        deb("%d.EXPR =>\n",anum);
X        }
X#endif
X        sp = eval(argptr.arg_arg,
X        (argflags & AF_ARYOK) ? G_ARRAY : G_SCALAR, sp);
X        if (sp + (maxarg - anum) > stack->ary_max)
X        astore(stack, sp + (maxarg - anum), Nullstr);
X        st = stack->ary_array;    /* possibly reallocated */
X        break;
X    case A_CMD:
X#ifdef DEBUGGING
X        if (debug & 8) {
X        tmps = "CMD";
X        deb("%d.CMD (%lx) =>\n",anum,argptr.arg_cmd);
X        }
X#endif
X        sp = cmd_exec(argptr.arg_cmd, gimme, sp);
X        if (sp + (maxarg - anum) > stack->ary_max)
X        astore(stack, sp + (maxarg - anum), Nullstr);
X        st = stack->ary_array;    /* possibly reallocated */
X        break;
X    case A_LARYSTAB:
X        ++sp;
X        switch (optype) {
X        case O_ITEM2: argtype = 2; break;
X        case O_ITEM3: argtype = 3; break;
X        default:      argtype = anum; break;
X        }
X        str = afetch(stab_array(argptr.arg_stab),
X        arg[argtype].arg_len - arybase, TRUE);
X#ifdef DEBUGGING
X        if (debug & 8) {
X        (void)sprintf(buf,"LARYSTAB $%s[%d]",stab_name(argptr.arg_stab),
X            arg[argtype].arg_len);
X        tmps = buf;
X        }
X#endif
X        goto do_crement;
X    case A_ARYSTAB:
X        switch (optype) {
X        case O_ITEM2: argtype = 2; break;
X        case O_ITEM3: argtype = 3; break;
X        default:      argtype = anum; break;
X        }
X        st[++sp] = afetch(stab_array(argptr.arg_stab),
X        arg[argtype].arg_len - arybase, FALSE);
X#ifdef DEBUGGING
X        if (debug & 8) {
X        (void)sprintf(buf,"ARYSTAB $%s[%d]",stab_name(argptr.arg_stab),
X            arg[argtype].arg_len);
X        tmps = buf;
X        }
X#endif
X        break;
X    case A_STAR:
X        stab = argptr.arg_stab;
X        st[++sp] = (STR*)stab;
X        if (!stab_xarray(stab))
X        aadd(stab);
X        if (!stab_xhash(stab))
X        hadd(stab);
X        if (!stab_io(stab))
X        stab_io(stab) = stio_new();
X#ifdef DEBUGGING
X        if (debug & 8) {
X        (void)sprintf(buf,"STAR *%s",stab_name(argptr.arg_stab));
X        tmps = buf;
X        }
X#endif
X        break;
X    case A_LSTAR:
X        str = st[++sp] = (STR*)argptr.arg_stab;
X#ifdef DEBUGGING
X        if (debug & 8) {
X        (void)sprintf(buf,"LSTAR *%s",stab_name(argptr.arg_stab));
X        tmps = buf;
X        }
X#endif
X        break;
X    case A_STAB:
X        st[++sp] = STAB_STR(argptr.arg_stab);
X#ifdef DEBUGGING
X        if (debug & 8) {
X        (void)sprintf(buf,"STAB $%s",stab_name(argptr.arg_stab));
X        tmps = buf;
X        }
X#endif
X        break;
X    case A_LEXPR:
X#ifdef DEBUGGING
X        if (debug & 8) {
X        tmps = "LEXPR";
X        deb("%d.LEXPR =>\n",anum);
X        }
X#endif
X        if (argflags & AF_ARYOK) {
X        sp = eval(argptr.arg_arg, G_ARRAY, sp);
X        if (sp + (maxarg - anum) > stack->ary_max)
X            astore(stack, sp + (maxarg - anum), Nullstr);
X        st = stack->ary_array;    /* possibly reallocated */
X        }
X        else {
X        sp = eval(argptr.arg_arg, G_SCALAR, sp);
X        st = stack->ary_array;    /* possibly reallocated */
X        str = st[sp];
X        goto do_crement;
X        }
X        break;
X    case A_LVAL:
X#ifdef DEBUGGING
X        if (debug & 8) {
X        (void)sprintf(buf,"LVAL $%s",stab_name(argptr.arg_stab));
X        tmps = buf;
X        }
X#endif
X        ++sp;
X        str = STAB_STR(argptr.arg_stab);
X        if (!str)
X        fatal("panic: A_LVAL");
X      do_crement:
X        assigning = TRUE;
X        if (argflags & AF_PRE) {
X        if (argflags & AF_UP)
X            str_inc(str);
X        else
X            str_dec(str);
X        STABSET(str);
X        st[sp] = str;
X        str = arg->arg_ptr.arg_str;
X        }
X        else if (argflags & AF_POST) {
X        st[sp] = str_mortal(str);
X        if (argflags & AF_UP)
X            str_inc(str);
X        else
X            str_dec(str);
X        STABSET(str);
X        str = arg->arg_ptr.arg_str;
X        }
X        else
X        st[sp] = str;
X        break;
X    case A_LARYLEN:
X        ++sp;
X        stab = argptr.arg_stab;
X        str = stab_array(argptr.arg_stab)->ary_magic;
X        if (optype != O_SASSIGN || argflags & (AF_PRE|AF_POST))
X        str_numset(str,(double)(stab_array(stab)->ary_fill+arybase));
X#ifdef DEBUGGING
X        tmps = "LARYLEN";
X#endif
X        if (!str)
X        fatal("panic: A_LEXPR");
X        goto do_crement;
X    case A_ARYLEN:
X        stab = argptr.arg_stab;
X        st[++sp] = stab_array(stab)->ary_magic;
X        str_numset(st[sp],(double)(stab_array(stab)->ary_fill+arybase));
X#ifdef DEBUGGING
X        tmps = "ARYLEN";
X#endif
X        break;
X    case A_SINGLE:
X        st[++sp] = argptr.arg_str;
X#ifdef DEBUGGING
X        tmps = "SINGLE";
X#endif
X        break;
X    case A_DOUBLE:
X        (void) interp(str,argptr.arg_str,sp);
X        st = stack->ary_array;
X        st[++sp] = str;
X#ifdef DEBUGGING
X        tmps = "DOUBLE";
X#endif
X        break;
X    case A_BACKTICK:
X        tmps = str_get(interp(str,argptr.arg_str,sp));
X        st = stack->ary_array;
X#ifdef TAINT
X        taintproper("Insecure dependency in ``");
X#endif
X        fp = mypopen(tmps,"r");
X        str_set(str,"");
X        if (fp) {
X        if (gimme == G_SCALAR) {
X            while (str_gets(str,fp,str->str_cur) != Nullch)
X            ;
X        }
X        else {
X            for (;;) {
X            if (++sp > stack->ary_max) {
X                astore(stack, sp, Nullstr);
X                st = stack->ary_array;
X            }
X            str = st[sp] = Str_new(56,80);
X            if (str_gets(str,fp,0) == Nullch) {
X                sp--;
X                break;
X            }
X            if (str->str_len - str->str_cur > 20) {
X                str->str_len = str->str_cur+1;
X                Renew(str->str_ptr, str->str_len, char);
X            }
X            str_2mortal(str);
X            }
X        }
X        statusvalue = mypclose(fp);
X        }
X        else
X        statusvalue = -1;
X
X        if (gimme == G_SCALAR)
X        st[++sp] = str;
X#ifdef DEBUGGING
X        tmps = "BACK";
X#endif
X        break;
X    case A_WANTARRAY:
X        {
X        if (curcsv->wantarray == G_ARRAY)
X            st[++sp] = &str_yes;
X        else
X            st[++sp] = &str_no;
X        }
X#ifdef DEBUGGING
X        tmps = "WANTARRAY";
X#endif
X        break;
X    case A_INDREAD:
X        last_in_stab = stabent(str_get(STAB_STR(argptr.arg_stab)),TRUE);
X        old_rschar = rschar;
X        old_rslen = rslen;
X        goto do_read;
X    case A_GLOB:
X        argflags |= AF_POST;    /* enable newline chopping */
X        last_in_stab = argptr.arg_stab;
X        old_rschar = rschar;
X        old_rslen = rslen;
X        rslen = 1;
X#ifdef MSDOS
X        rschar = 0;
X#else
X#ifdef CSH
X        rschar = 0;
X#else
X        rschar = '\n';
X#endif    /* !CSH */
X#endif    /* !MSDOS */
X        goto do_read;
X    case A_READ:
X        last_in_stab = argptr.arg_stab;
X        old_rschar = rschar;
X        old_rslen = rslen;
X      do_read:
X        if (anum > 1)        /* assign to scalar */
X        gimme = G_SCALAR;    /* force context to scalar */
X        if (gimme == G_ARRAY)
X        str = Str_new(57,0);
X        ++sp;
X        fp = Nullfp;
X        if (stab_io(last_in_stab)) {
X        fp = stab_io(last_in_stab)->ifp;
X        if (!fp) {
X            if (stab_io(last_in_stab)->flags & IOF_ARGV) {
X            if (stab_io(last_in_stab)->flags & IOF_START) {
X                stab_io(last_in_stab)->flags &= ~IOF_START;
X                stab_io(last_in_stab)->lines = 0;
X                if (alen(stab_array(last_in_stab)) < 0) {
X                tmpstr = str_make("-",1); /* assume stdin */
X                (void)apush(stab_array(last_in_stab), tmpstr);
X                }
X            }
X            fp = nextargv(last_in_stab);
X            if (!fp) { /* Note: fp != stab_io(last_in_stab)->ifp */
X                (void)do_close(last_in_stab,FALSE); /* now it does*/
X                stab_io(last_in_stab)->flags |= IOF_START;
X            }
X            }
X            else if (argtype == A_GLOB) {
X            (void) interp(str,stab_val(last_in_stab),sp);
X            st = stack->ary_array;
X            tmpstr = Str_new(55,0);
X#ifdef MSDOS
X            str_set(tmpstr, "perlglob ");
X            str_scat(tmpstr,str);
X            str_cat(tmpstr," |");
X#else
X#ifdef CSH
X            str_nset(tmpstr,cshname,cshlen);
X            str_cat(tmpstr," -cf 'set nonomatch; glob ");
X            str_scat(tmpstr,str);
X            str_cat(tmpstr,"'|");
X#else
X            str_set(tmpstr, "echo ");
X            str_scat(tmpstr,str);
X            str_cat(tmpstr,
X              "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
X#endif /* !CSH */
X#endif /* !MSDOS */
X            (void)do_open(last_in_stab,tmpstr->str_ptr,
X              tmpstr->str_cur);
X            fp = stab_io(last_in_stab)->ifp;
X            str_free(tmpstr);
X            }
X        }
X        }
X        if (!fp && dowarn)
X        warn("Read on closed filehandle <%s>",stab_name(last_in_stab));
X        when = str->str_len;    /* remember if already alloced */
X        if (!when)
X        Str_Grow(str,80);    /* try short-buffering it */
X      keepgoing:
X        if (!fp)
X        st[sp] = &str_undef;
X        else if (!str_gets(str,fp, optype == O_RCAT ? str->str_cur : 0)) {
X        clearerr(fp);
X        if (stab_io(last_in_stab)->flags & IOF_ARGV) {
X            fp = nextargv(last_in_stab);
X            if (fp)
X            goto keepgoing;
X            (void)do_close(last_in_stab,FALSE);
X            stab_io(last_in_stab)->flags |= IOF_START;
X        }
X        else if (argflags & AF_POST) {
X            (void)do_close(last_in_stab,FALSE);
X        }
X        st[sp] = &str_undef;
X        rschar = old_rschar;
X        rslen = old_rslen;
X        if (gimme == G_ARRAY) {
X            --sp;
X            str_2mortal(str);
X            goto array_return;
X        }
X        break;
X        }
X        else {
X        stab_io(last_in_stab)->lines++;
X        st[sp] = str;
X#ifdef TAINT
X        str->str_tainted = 1; /* Anything from the outside world...*/
X#endif
X        if (argflags & AF_POST) {
X            if (str->str_cur > 0)
X            str->str_cur--;
X            if (str->str_ptr[str->str_cur] == rschar)
X            str->str_ptr[str->str_cur] = '\0';
X            else
X            str->str_cur++;
X            for (tmps = str->str_ptr; *tmps; tmps++)
X            if (!isalpha(*tmps) && !isdigit(*tmps) &&
X                index("$&*(){}[]'\";\\|?<>~`",*tmps))
X                break;
X            if (*tmps && stat(str->str_ptr,&statbuf) < 0)
X            goto keepgoing;        /* unmatched wildcard? */
X        }
X        if (gimme == G_ARRAY) {
X            if (str->str_len - str->str_cur > 20) {
X            str->str_len = str->str_cur+1;
X            Renew(str->str_ptr, str->str_len, char);
X            }
X            str_2mortal(str);
X            if (++sp > stack->ary_max) {
X            astore(stack, sp, Nullstr);
X            st = stack->ary_array;
X            }
X            str = Str_new(58,80);
X            goto keepgoing;
X        }
X        else if (!when && str->str_len - str->str_cur > 80) {
X            /* try to reclaim a bit of scalar space on 1st alloc */
X            if (str->str_cur < 60)
X            str->str_len = 80;
X            else
X            str->str_len = str->str_cur+40;    /* allow some slop */
X            Renew(str->str_ptr, str->str_len, char);
X        }
X        }
X        rschar = old_rschar;
X        rslen = old_rslen;
X#ifdef DEBUGGING
X        tmps = "READ";
X#endif
X        break;
X    }
X#ifdef DEBUGGING
X    if (debug & 8)
X        deb("%d.%s = '%s'\n",anum,tmps,str_peek(st[sp]));
X#endif
X    if (anum < 8)
X        arglast[anum] = sp;
X    }
X
X    st += arglast[0];
X#ifdef SMALLSWITCHES
X    if (optype < O_CHOWN)
X#endif
X    switch (optype) {
X    case O_RCAT:
X    STABSET(str);
X    break;
X    case O_ITEM:
X    if (gimme == G_ARRAY)
X        goto array_return;
X    /* FALL THROUGH */
X    case O_SCALAR:
X    STR_SSET(str,st[1]);
X    STABSET(str);
X    break;
X    case O_ITEM2:
X    if (gimme == G_ARRAY)
X        goto array_return;
X    --anum;
X    STR_SSET(str,st[arglast[anum]-arglast[0]]);
X    STABSET(str);
X    break;
X    case O_ITEM3:
X    if (gimme == G_ARRAY)
X    goto array_return;
X    --anum;
X    STR_SSET(str,st[arglast[anum]-arglast[0]]);
X    STABSET(str);
X    break;
X    case O_CONCAT:
X    STR_SSET(str,st[1]);
X    str_scat(str,st[2]);
X    STABSET(str);
X    break;
X    case O_REPEAT:
X    if (gimme == G_ARRAY && arg[1].arg_flags & AF_ARYOK) {
X        sp = do_repeatary(arglast);
X        goto array_return;
X    }
X    STR_SSET(str,st[arglast[1] - arglast[0]]);
X    anum = (int)str_gnum(st[arglast[2] - arglast[0]]);
X    if (anum >= 1) {
X        tmpstr = Str_new(50, 0);
X        tmps = str_get(str);
X        str_nset(tmpstr,tmps,str->str_cur);
X        tmps = str_get(tmpstr);    /* force to be string */
X        STR_GROW(str, (anum * str->str_cur) + 1);
X        repeatcpy(str->str_ptr, tmps, tmpstr->str_cur, anum);
X        str->str_cur *= anum;
X        str->str_ptr[str->str_cur] = '\0';
X        str->str_nok = 0;
X        str_free(tmpstr);
X    }
X    else
X        str_sset(str,&str_no);
X    STABSET(str);
X    break;
X    case O_MATCH:
X    sp = do_match(str,arg,
X      gimme,arglast);
X    if (gimme == G_ARRAY)
X        goto array_return;
X    STABSET(str);
X    break;
X    case O_NMATCH:
X    sp = do_match(str,arg,
X      G_SCALAR,arglast);
X    str_sset(str, str_true(str) ? &str_no : &str_yes);
X    STABSET(str);
X    break;
X    case O_SUBST:
X    sp = do_subst(str,arg,arglast[0]);
X    goto array_return;
X    case O_NSUBST:
X    sp = do_subst(str,arg,arglast[0]);
X    str = arg->arg_ptr.arg_str;
X    str_set(str, str_true(str) ? No : Yes);
X    goto array_return;
X    case O_ASSIGN:
X    if (arg[1].arg_flags & AF_ARYOK) {
X        if (arg->arg_len == 1) {
X        arg->arg_type = O_LOCAL;
X        goto local;
X        }
X        else {
X        arg->arg_type = O_AASSIGN;
X        goto aassign;
X        }
X    }
X    else {
X        arg->arg_type = O_SASSIGN;
X        goto sassign;
X    }
X    case O_LOCAL:
X      local:
X    arglast[2] = arglast[1];    /* push a null array */
X    /* FALL THROUGH */
X    case O_AASSIGN:
X      aassign:
X    sp = do_assign(arg,
X      gimme,arglast);
X    goto array_return;
X    case O_SASSIGN:
X      sassign:
X    STR_SSET(str, st[2]);
X    STABSET(str);
X    break;
X    case O_CHOP:
X    st -= arglast[0];
X    str = arg->arg_ptr.arg_str;
X    for (sp = arglast[0] + 1; sp <= arglast[1]; sp++)
X        do_chop(str,st[sp]);
X    st += arglast[0];
X    break;
X    case O_DEFINED:
X    if (arg[1].arg_type & A_DONT) {
X        sp = do_defined(str,arg,
X          gimme,arglast);
X        goto array_return;
X    }
X    else if (str->str_pok || str->str_nok)
X        goto say_yes;
X    goto say_no;
X    case O_UNDEF:
X    if (arg[1].arg_type & A_DONT) {
X        sp = do_undef(str,arg,
X          gimme,arglast);
X        goto array_return;
X    }
X    else if (str != stab_val(defstab)) {
X        if (str->str_len) {
X        if (str->str_state == SS_INCR)
X            Str_Grow(str,0);
X        Safefree(str->str_ptr);
X        str->str_ptr = Nullch;
X        str->str_len = 0;
X        }
X        str->str_pok = str->str_nok = 0;
X        STABSET(str);
X    }
X    goto say_undef;
X    case O_STUDY:
X    sp = do_study(str,arg,
X      gimme,arglast);
X    goto array_return;
X    case O_POW:
X    value = str_gnum(st[1]);
X    value = pow(value,str_gnum(st[2]));
X    goto donumset;
X    case O_MULTIPLY:
X    value = str_gnum(st[1]);
X    value *= str_gnum(st[2]);
X    goto donumset;
X    case O_DIVIDE:
X    if ((value = str_gnum(st[2])) == 0.0)
X        fatal("Illegal division by zero");
X#ifdef cray
X    /* insure that 20./5. == 4. */
X    {
X        double x;
X        int    k;
X        x =  str_gnum(st[1]);
X        if ((double)(int)x     == x &&
X        (double)(int)value == value &&
X        (k = (int)x/(int)value)*(int)value == (int)x) {
X        value = k;
X        } else {
X        value = x/value;
X        }
X    }
X#else
X    value = str_gnum(st[1]) / value;
X#endif
X    goto donumset;
X    case O_MODULO:
X    tmplong = (long) str_gnum(st[2]);
X        if (tmplong == 0L)
X            fatal("Illegal modulus zero");
X    when = (long)str_gnum(st[1]);
X#ifndef lint
X    if (when >= 0)
X        value = (double)(when % tmplong);
X    else
X        value = (double)(tmplong - ((-when - 1) % tmplong)) - 1;
X#endif
X    goto donumset;
X    case O_ADD:
X    value = str_gnum(st[1]);
X    value += str_gnum(st[2]);
X    goto donumset;
X    case O_SUBTRACT:
X    value = str_gnum(st[1]);
X    value -= str_gnum(st[2]);
X    goto donumset;
X    case O_LEFT_SHIFT:
X    value = str_gnum(st[1]);
X    anum = (int)str_gnum(st[2]);
X#ifndef lint
X    value = (double)(U_L(value) << anum);
X#endif
X    goto donumset;
X    case O_RIGHT_SHIFT:
X    value = str_gnum(st[1]);
X    anum = (int)str_gnum(st[2]);
X#ifndef lint
X    value = (double)(U_L(value) >> anum);
X#endif
X    goto donumset;
X    case O_LT:
X    value = str_gnum(st[1]);
X    value = (value < str_gnum(st[2])) ? 1.0 : 0.0;
X    goto donumset;
X    case O_GT:
X    value = str_gnum(st[1]);
X    value = (value > str_gnum(st[2])) ? 1.0 : 0.0;
X    goto donumset;
X    case O_LE:
X    value = str_gnum(st[1]);
X    value = (value <= str_gnum(st[2])) ? 1.0 : 0.0;
X    goto donumset;
X    case O_GE:
X    value = str_gnum(st[1]);
X    value = (value >= str_gnum(st[2])) ? 1.0 : 0.0;
X    goto donumset;
X    case O_EQ:
X    if (dowarn) {
X        if ((!st[1]->str_nok && !looks_like_number(st[1])) ||
X        (!st[2]->str_nok && !looks_like_number(st[2])) )
X        warn("Possible use of == on string value");
X    }
X    value = str_gnum(st[1]);
X    value = (value == str_gnum(st[2])) ? 1.0 : 0.0;
X    goto donumset;
X    case O_NE:
X    value = str_gnum(st[1]);
X    value = (value != str_gnum(st[2])) ? 1.0 : 0.0;
X    goto donumset;
X    case O_NCMP:
X    value = str_gnum(st[1]);
X    value -= str_gnum(st[2]);
X    if (value > 0.0)
X        value = 1.0;
X    else if (value < 0.0)
X        value = -1.0;
X    goto donumset;
X    case O_BIT_AND:
X    if (!sawvec || st[1]->str_nok || st[2]->str_nok) {
X        value = str_gnum(st[1]);
X#ifndef lint
X        value = (double)(U_L(value) & U_L(str_gnum(st[2])));
X#endif
X        goto donumset;
X    }
X    else
X        do_vop(optype,str,st[1],st[2]);
X    break;
X    case O_XOR:
X    if (!sawvec || st[1]->str_nok || st[2]->str_nok) {
X        value = str_gnum(st[1]);
X#ifndef lint
X        value = (double)(U_L(value) ^ U_L(str_gnum(st[2])));
X#endif
X        goto donumset;
X    }
X    else
X        do_vop(optype,str,st[1],st[2]);
X    break;
X    case O_BIT_OR:
X    if (!sawvec || st[1]->str_nok || st[2]->str_nok) {
X        value = str_gnum(st[1]);
X#ifndef lint
X        value = (double)(U_L(value) | U_L(str_gnum(st[2])));
X#endif
X        goto donumset;
X    }
X    else
X        do_vop(optype,str,st[1],st[2]);
X    break;
X/* use register in evaluating str_true() */
X    case O_AND:
X    if (str_true(st[1])) {
X        anum = 2;
X        optype = O_ITEM2;
X        argflags = arg[anum].arg_flags;
X        if (gimme == G_ARRAY)
X        argflags |= AF_ARYOK;
X        argtype = arg[anum].arg_type & A_MASK;
X        argptr = arg[anum].arg_ptr;
X        maxarg = anum = 1;
X        sp = arglast[0];
X        st -= sp;
X        goto re_eval;
X    }
X    else {
X        if (assigning) {
X        str_sset(str, st[1]);
X        STABSET(str);
X        }
X        else
X        str = st[1];
X        break;
X    }
X    case O_OR:
X    if (str_true(st[1])) {
X        if (assigning) {
X        str_sset(str, st[1]);
X        STABSET(str);
X        }
X        else
X        str = st[1];
X        break;
X    }
X    else {
X        anum = 2;
X        optype = O_ITEM2;
X        argflags = arg[anum].arg_flags;
X        if (gimme == G_ARRAY)
X        argflags |= AF_ARYOK;
X        argtype = arg[anum].arg_type & A_MASK;
X        argptr = arg[anum].arg_ptr;
X        maxarg = anum = 1;
X        sp = arglast[0];
X        st -= sp;
X        goto re_eval;
X    }
X    case O_COND_EXPR:
X    anum = (str_true(st[1]) ? 2 : 3);
X    optype = (anum == 2 ? O_ITEM2 : O_ITEM3);
X    argflags = arg[anum].arg_flags;
X    if (gimme == G_ARRAY)
X        argflags |= AF_ARYOK;
X    argtype = arg[anum].arg_type & A_MASK;
X    argptr = arg[anum].arg_ptr;
X    maxarg = anum = 1;
X    sp = arglast[0];
X    st -= sp;
X    goto re_eval;
X    case O_COMMA:
X    if (gimme == G_ARRAY)
X        goto array_return;
X    str = st[2];
X    break;
X    case O_NEGATE:
X    value = -str_gnum(st[1]);
X    goto donumset;
X    case O_NOT:
X    value = (double) !str_true(st[1]);
X    goto donumset;
X    case O_COMPLEMENT:
X    if (!sawvec || st[1]->str_nok) {
X#ifndef lint
X        value = (double) ~U_L(str_gnum(st[1]));
X#endif
X        goto donumset;
X    }
X    else {
X        STR_SSET(str,st[1]);
X        tmps = str_get(str);
X        for (anum = str->str_cur; anum; anum--, tmps++)
X        *tmps = ~*tmps;
X    }
X    break;
X    case O_SELECT:
X    stab_fullname(str,defoutstab);
X    if (maxarg > 0) {
X        if ((arg[1].arg_type & A_MASK) == A_WORD)
X        defoutstab = arg[1].arg_ptr.arg_stab;
X        else
X        defoutstab = stabent(str_get(st[1]),TRUE);
X        if (!stab_io(defoutstab))
X        stab_io(defoutstab) = stio_new();
X        curoutstab = defoutstab;
X    }
X    STABSET(str);
X    break;
X    case O_WRITE:
X    if (maxarg == 0)
X        stab = defoutstab;
X    else if ((arg[1].arg_type & A_MASK) == A_WORD) {
X        if (!(stab = arg[1].arg_ptr.arg_stab))
X        stab = defoutstab;
X    }
X    else
X        stab = stabent(str_get(st[1]),TRUE);
X    if (!stab_io(stab)) {
X        str_set(str, No);
X        STABSET(str);
X        break;
X    }
X    curoutstab = stab;
X    fp = stab_io(stab)->ofp;
X    debarg = arg;
X    if (stab_io(stab)->fmt_stab)
X        form = stab_form(stab_io(stab)->fmt_stab);
X    else
X        form = stab_form(stab);
X    if (!form || !fp) {
X        if (dowarn) {
X        if (form)
X            warn("No format for filehandle");
X        else {
X            if (stab_io(stab)->ifp)
X            warn("Filehandle only opened for input");
X            else
X            warn("Write on closed filehandle");
X        }
X        }
X        str_set(str, No);
X        STABSET(str);
X        break;
X    }
X    format(&outrec,form,sp);
X    do_write(&outrec,stab_io(stab),sp);
X    if (stab_io(stab)->flags & IOF_FLUSH)
X        (void)fflush(fp);
X    str_set(str, Yes);
X    STABSET(str);
X    break;
X    case O_DBMOPEN:
X#ifdef SOME_DBM
X    anum = arg[1].arg_type & A_MASK;
X    if (anum == A_WORD || anum == A_STAB)
X        stab = arg[1].arg_ptr.arg_stab;
X    else
X        stab = stabent(str_get(st[1]),TRUE);
X    if (st[3]->str_nok || st[3]->str_pok)
X        anum = (int)str_gnum(st[3]);
X    else
X        anum = -1;
X    value = (double)hdbmopen(stab_hash(stab),str_get(st[2]),anum);
X    goto donumset;
X#else
X    fatal("No dbm or ndbm on this machine");
X#endif
X    case O_DBMCLOSE:
X#ifdef SOME_DBM
X    if ((arg[1].arg_type & A_MASK) == A_WORD)
X        stab = arg[1].arg_ptr.arg_stab;
X    else
X        stab = stabent(str_get(st[1]),TRUE);
X    hdbmclose(stab_hash(stab));
X    goto say_yes;
X#else
X    fatal("No dbm or ndbm on this machine");
X#endif
X    case O_OPEN:
X    if ((arg[1].arg_type & A_MASK) == A_WORD)
X        stab = arg[1].arg_ptr.arg_stab;
X    else
X        stab = stabent(str_get(st[1]),TRUE);
X    tmps = str_get(st[2]);
X    if (do_open(stab,tmps,st[2]->str_cur)) {
X        value = (double)forkprocess;
X        stab_io(stab)->lines = 0;
X        goto donumset;
X    }
X    else if (forkprocess == 0)        /* we are a new child */
X        goto say_zero;
X    else
X        goto say_undef;
X    /* break; */
X    case O_TRANS:
X    value = (double) do_trans(str,arg);
X    str = arg->arg_ptr.arg_str;
X    goto donumset;
X    case O_NTRANS:
X    str_set(arg->arg_ptr.arg_str, do_trans(str,arg) == 0 ? Yes : No);
X    str = arg->arg_ptr.arg_str;
X    break;
X    case O_CLOSE:
X    if (maxarg == 0)
X        stab = defoutstab;
X    else if ((arg[1].arg_type & A_MASK) == A_WORD)
X        stab = arg[1].arg_ptr.arg_stab;
X    else
X        stab = stabent(str_get(st[1]),TRUE);
X    str_set(str, do_close(stab,TRUE) ? Yes : No );
X    STABSET(str);
X    break;
X    case O_EACH:
X    sp = do_each(str,stab_hash(arg[1].arg_ptr.arg_stab),
X      gimme,arglast);
X    goto array_return;
X    case O_VALUES:
X    case O_KEYS:
X    sp = do_kv(str,stab_hash(arg[1].arg_ptr.arg_stab), optype,
X      gimme,arglast);
X    goto array_return;
X    case O_LARRAY:
X    str->str_nok = str->str_pok = 0;
X    str->str_u.str_stab = arg[1].arg_ptr.arg_stab;
X    str->str_state = SS_ARY;
X    break;
X    case O_ARRAY:
X    ary = stab_array(arg[1].arg_ptr.arg_stab);
X    maxarg = ary->ary_fill + 1;
X    if (gimme == G_ARRAY) { /* array wanted */
X        sp = arglast[0];
X        st -= sp;
X        if (maxarg > 0 && sp + maxarg > stack->ary_max) {
X        astore(stack,sp + maxarg, Nullstr);
X        st = stack->ary_array;
X        }
X        st += sp;
X        Copy(ary->ary_array, &st[1], maxarg, STR*);
X        sp += maxarg;
X        goto array_return;
X    }
X    else {
X        value = (double)maxarg;
X        goto donumset;
X    }
X    case O_AELEM:
X    anum = ((int)str_gnum(st[2])) - arybase;
X    str = afetch(stab_array(arg[1].arg_ptr.arg_stab),anum,FALSE);
X    break;
X    case O_DELETE:
X    tmpstab = arg[1].arg_ptr.arg_stab;
X    tmps = str_get(st[2]);
X    str = hdelete(stab_hash(tmpstab),tmps,st[2]->str_cur);
X    if (tmpstab == envstab)
X        setenv(tmps,Nullch);
X    if (!str)
X        goto say_undef;
X    break;
X    case O_LHASH:
X    str->str_nok = str->str_pok = 0;
X    str->str_u.str_stab = arg[1].arg_ptr.arg_stab;
X    str->str_state = SS_HASH;
X    break;
X    case O_HASH:
X    if (gimme == G_ARRAY) { /* array wanted */
X        sp = do_kv(str,stab_hash(arg[1].arg_ptr.arg_stab), optype,
X        gimme,arglast);
X        goto array_return;
X    }
X    else {
X        tmpstab = arg[1].arg_ptr.arg_stab;
X        if (!stab_hash(tmpstab)->tbl_fill)
X        goto say_zero;
X        sprintf(buf,"%d/%d",stab_hash(tmpstab)->tbl_fill,
X        stab_hash(tmpstab)->tbl_max+1);
X        str_set(str,buf);
X    }
X    break;
X    case O_HELEM:
X    tmpstab = arg[1].arg_ptr.arg_stab;
X    tmps = str_get(st[2]);
X    str = hfetch(stab_hash(tmpstab),tmps,st[2]->str_cur,FALSE);
X    break;
X    case O_LAELEM:
X    anum = ((int)str_gnum(st[2])) - arybase;
X    str = afetch(stab_array(arg[1].arg_ptr.arg_stab),anum,TRUE);
X    if (!str || str == &str_undef)
X        fatal("Assignment to non-creatable value, subscript %d",anum);
X    break;
X    case O_LHELEM:
X    tmpstab = arg[1].arg_ptr.arg_stab;
X    tmps = str_get(st[2]);
X    anum = st[2]->str_cur;
X    str = hfetch(stab_hash(tmpstab),tmps,anum,TRUE);
X    if (!str || str == &str_undef)
X        fatal("Assignment to non-creatable value, subscript \"%s\"",tmps);
X    if (tmpstab == envstab)        /* heavy wizardry going on here */
X        str_magic(str, tmpstab, 'E', tmps, anum);    /* str is now magic */
X                    /* he threw the brick up into the air */
X    else if (tmpstab == sigstab)
X        str_magic(str, tmpstab, 'S', tmps, anum);
X#ifdef SOME_DBM
X    else if (stab_hash(tmpstab)->tbl_dbm)
X        str_magic(str, tmpstab, 'D', tmps, anum);
X#endif
X    else if (perldb && tmpstab == DBline)
X        str_magic(str, tmpstab, 'L', tmps, anum);
X    break;
X    case O_LSLICE:
X    anum = 2;
X    argtype = FALSE;
X    goto do_slice_already;
X    case O_ASLICE:
X    anum = 1;
X    argtype = FALSE;
X    goto do_slice_already;
X    case O_HSLICE:
X    anum = 0;
X    argtype = FALSE;
X    goto do_slice_already;
X    case O_LASLICE:
X    anum = 1;
X    argtype = TRUE;
X    goto do_slice_already;
X    case O_LHSLICE:
X    anum = 0;
X    argtype = TRUE;
X      do_slice_already:
X    sp = do_slice(arg[1].arg_ptr.arg_stab,str,anum,argtype,
X        gimme,arglast);
X    goto array_return;
X    case O_SPLICE:
X    sp = do_splice(stab_array(arg[1].arg_ptr.arg_stab),gimme,arglast);
X    goto array_return;
X    case O_PUSH:
X    if (arglast[2] - arglast[1] != 1)
X        str = do_push(stab_array(arg[1].arg_ptr.arg_stab),arglast);
X    else {
X        str = Str_new(51,0);        /* must copy the STR */
X        str_sset(str,st[2]);
X        (void)apush(stab_array(arg[1].arg_ptr.arg_stab),str);
X    }
X    break;
X    case O_POP:
X    str = apop(ary = stab_array(arg[1].arg_ptr.arg_stab));
X    goto staticalization;
X    case O_SHIFT:
X    str = ashift(ary = stab_array(arg[1].arg_ptr.arg_stab));
X      staticalization:
X    if (!str)
X        goto say_undef;
X    if (ary->ary_flags & ARF_REAL)
X        (void)str_2mortal(str);
X    break;
X    case O_UNPACK:
X    sp = do_unpack(str,gimme,arglast);
X    goto array_return;
X    case O_SPLIT:
X    value = str_gnum(st[3]);
X    sp = do_split(str, arg[2].arg_ptr.arg_spat, (int)value,
X      gimme,arglast);
X    goto array_return;
X    case O_LENGTH:
X    if (maxarg < 1)
X        value = (double)str_len(stab_val(defstab));
X    else
X        value = (double)str_len(st[1]);
X    goto donumset;
X    case O_SPRINTF:
X    do_sprintf(str, sp-arglast[0], st+1);
X    break;
X    case O_SUBSTR:
X    anum = ((int)str_gnum(st[2])) - arybase;    /* anum=where to start*/
X    tmps = str_get(st[1]);        /* force conversion to string */
X    if (argtype = (str == st[1]))
X        str = arg->arg_ptr.arg_str;
X    if (anum < 0)
X        anum += st[1]->str_cur + arybase;
X    if (anum < 0 || anum > st[1]->str_cur)
X        str_nset(str,"",0);
X    else {
X        optype = maxarg < 3 ? st[1]->str_cur : (int)str_gnum(st[3]);
X        if (optype < 0)
X        optype = 0;
X        tmps += anum;
X        anum = st[1]->str_cur - anum;    /* anum=how many bytes left*/
X        if (anum > optype)
X        anum = optype;
X        str_nset(str, tmps, anum);
X        if (argtype) {            /* it's an lvalue! */
X        lstr = (struct lstring*)str;
X        str->str_magic = st[1];
X        st[1]->str_rare = 's';
X        lstr->lstr_offset = tmps - str_get(st[1]);
X        lstr->lstr_len = anum;
X        }
X    }
X    break;
X    case O_PACK:
X    (void)do_pack(str,arglast);
X    break;
X    case O_GREP:
X    sp = do_grep(arg,str,gimme,arglast);
X    goto array_return;
X    case O_JOIN:
X    do_join(str,arglast);
X    break;
X    case O_SLT:
X    tmps = str_get(st[1]);
X    value = (double) (str_cmp(st[1],st[2]) < 0);
X    goto donumset;
X    case O_SGT:
X    tmps = str_get(st[1]);
X    value = (double) (str_cmp(st[1],st[2]) > 0);
X    goto donumset;
X    case O_SLE:
X    tmps = str_get(st[1]);
X    value = (double) (str_cmp(st[1],st[2]) <= 0);
X    goto donumset;
X    case O_SGE:
X    tmps = str_get(st[1]);
X    value = (double) (str_cmp(st[1],st[2]) >= 0);
X    goto donumset;
X    case O_SEQ:
X    tmps = str_get(st[1]);
X    value = (double) str_eq(st[1],st[2]);
X    goto donumset;
X    case O_SNE:
X    tmps = str_get(st[1]);
X    value = (double) !str_eq(st[1],st[2]);
X    goto donumset;
X    case O_SCMP:
X    tmps = str_get(st[1]);
X    value = (double) str_cmp(st[1],st[2]);
X    goto donumset;
X    case O_SUBR:
X    sp = do_subr(arg,gimme,arglast);
X    st = stack->ary_array + arglast[0];        /* maybe realloced */
X    goto array_return;
X    case O_DBSUBR:
X    sp = do_subr(arg,gimme,arglast);
X    st = stack->ary_array + arglast[0];        /* maybe realloced */
X    goto array_return;
X    case O_CALLER:
X    sp = do_caller(arg,maxarg,gimme,arglast);
X    st = stack->ary_array + arglast[0];        /* maybe realloced */
X    goto array_return;
X    case O_SORT:
X    if ((arg[1].arg_type & A_MASK) == A_WORD)
X        stab = arg[1].arg_ptr.arg_stab;
X    else
X        stab = stabent(str_get(st[1]),TRUE);
X    sp = do_sort(str,stab,
X      gimme,arglast);
X    goto array_return;
X    case O_REVERSE:
X    if (gimme == G_ARRAY)
X        sp = do_reverse(arglast);
X    else
X        sp = do_sreverse(str, arglast);
X    goto array_return;
X    case O_WARN:
X    if (arglast[2] - arglast[1] != 1) {
X        do_join(str,arglast);
X        tmps = str_get(str);
X    }
X    else {
X        str = st[2];
X        tmps = str_get(st[2]);
X    }
X    if (!tmps || !*tmps)
X        tmps = "Warning: something's wrong";
X    warn("%s",tmps);
X    goto say_yes;
X    case O_DIE:
X    if (arglast[2] - arglast[1] != 1) {
X        do_join(str,arglast);
X        tmps = str_get(str);
X    }
X    else {
X        str = st[2];
X        tmps = str_get(st[2]);
X    }
X    if (!tmps || !*tmps)
X        tmps = "Died";
X    fatal("%s",tmps);
X    goto say_zero;
X    case O_PRTF:
X    case O_PRINT:
X    if ((arg[1].arg_type & A_MASK) == A_WORD)
X        stab = arg[1].arg_ptr.arg_stab;
X    else
X        stab = stabent(str_get(st[1]),TRUE);
X    if (!stab)
X        stab = defoutstab;
X    if (!stab_io(stab)) {
X        if (dowarn)
X        warn("Filehandle never opened");
X        goto say_zero;
X    }
X    if (!(fp = stab_io(stab)->ofp)) {
X        if (dowarn)  {
X        if (stab_io(stab)->ifp)
X            warn("Filehandle opened only for input");
X        else
X            warn("Print on closed filehandle");
X        }
X        goto say_zero;
X    }
X    else {
X        if (optype == O_PRTF || arglast[2] - arglast[1] != 1)
X        value = (double)do_aprint(arg,fp,arglast);
X        else {
X        value = (double)do_print(st[2],fp);
X        if (orslen && optype == O_PRINT)
X            if (fwrite(ors, 1, orslen, fp) == 0)
X            goto say_zero;
X        }
X        if (stab_io(stab)->flags & IOF_FLUSH)
X        if (fflush(fp) == EOF)
X            goto say_zero;
X    }
X    goto donumset;
X    case O_CHDIR:
X    if (maxarg < 1)
X        tmps = Nullch;
X    else
X        tmps = str_get(st[1]);
X    if (!tmps || !*tmps) {
X        tmpstr = hfetch(stab_hash(envstab),"HOME",4,FALSE);
X        tmps = str_get(tmpstr);
X    }
X    if (!tmps || !*tmps) {
X        tmpstr = hfetch(stab_hash(envstab),"LOGDIR",6,FALSE);
X        tmps = str_get(tmpstr);
X    }
X#ifdef TAINT
X    taintproper("Insecure dependency in chdir");
X#endif
X    value = (double)(chdir(tmps) >= 0);
X    goto donumset;
X    case O_EXIT:
X    if (maxarg < 1)
X        anum = 0;
X    else
X        anum = (int)str_gnum(st[1]);
X    exit(anum);
X    goto say_zero;
X    case O_RESET:
X    if (maxarg < 1)
X        tmps = "";
X    else
X        tmps = str_get(st[1]);
X    str_reset(tmps,curcmd->c_stash);
X    value = 1.0;
X    goto donumset;
X    case O_LIST:
X    if (gimme == G_ARRAY)
X        goto array_return;
X    if (maxarg > 0)
X        str = st[sp - arglast[0]];    /* unwanted list, return last item */
X    else
X        str = &str_undef;
X    break;
X    case O_EOF:
X    if (maxarg <= 0)
X        stab = last_in_stab;
X    else if ((arg[1].arg_type & A_MASK) == A_WORD)
X        stab = arg[1].arg_ptr.arg_stab;
X    else
X        stab = stabent(str_get(st[1]),TRUE);
X    str_set(str, do_eof(stab) ? Yes : No);
X    STABSET(str);
X    break;
X    case O_GETC:
X    if (maxarg <= 0)
X        stab = stdinstab;
X    else if ((arg[1].arg_type & A_MASK) == A_WORD)
X        stab = arg[1].arg_ptr.arg_stab;
X    else
X        stab = stabent(str_get(st[1]),TRUE);
X    if (!stab)
X        stab = argvstab;
X    if (!stab || do_eof(stab)) /* make sure we have fp with something */
X        goto say_undef;
X    else {
X#ifdef TAINT
X        tainted = 1;
X#endif
X        str_set(str," ");
X        *str->str_ptr = getc(stab_io(stab)->ifp); /* should never be EOF */
X    }
X    STABSET(str);
X    break;
X    case O_TELL:
X    if (maxarg <= 0)
X        stab = last_in_stab;
X    else if ((arg[1].arg_type & A_MASK) == A_WORD)
X        stab = arg[1].arg_ptr.arg_stab;
X    else
X        stab = stabent(str_get(st[1]),TRUE);
X#ifndef lint
X    value = (double)do_tell(stab);
X#else
X    (void)do_tell(stab);
X#endif
X    goto donumset;
X    case O_RECV:
X    case O_READ:
X    case O_SYSREAD:
X    if ((arg[1].arg_type & A_MASK) == A_WORD)
X        stab = arg[1].arg_ptr.arg_stab;
X    else
X        stab = stabent(str_get(st[1]),TRUE);
X    tmps = str_get(st[2]);
X    anum = (int)str_gnum(st[3]);
X    errno = 0;
X    maxarg = sp - arglast[0];
X    if (maxarg > 4)
X        warn("Too many args on read");
X    if (maxarg == 4)
X        maxarg = (int)str_gnum(st[4]);
X    else
X        maxarg = 0;
X    if (!stab_io(stab) || !stab_io(stab)->ifp)
X        goto say_undef;
X#ifdef HAS_SOCKET
X    if (optype == O_RECV) {
X        argtype = sizeof buf;
X        STR_GROW(st[2], anum+1), (tmps = str_get(st[2]));  /* sneaky */
X        anum = recvfrom(fileno(stab_io(stab)->ifp), tmps, anum, maxarg,
X        buf, &argtype);
X        if (anum >= 0) {
X        st[2]->str_cur = anum;
X        st[2]->str_ptr[anum] = '\0';
X        str_nset(str,buf,argtype);
X        }
X        else
X        str_sset(str,&str_undef);
X        break;
X    }
X#else
X    if (optype == O_RECV)
X        goto badsock;
X#endif
X    STR_GROW(st[2], anum+maxarg+1), (tmps = str_get(st[2]));  /* sneaky */
X#ifdef HAS_SOCKET
X    if (stab_io(stab)->type == 's') {
X        argtype = sizeof buf;
X        anum = recvfrom(fileno(stab_io(stab)->ifp), tmps+maxarg, anum, 0,
X        buf, &argtype);
X    }
X    else
X#endif
X    if (optype == O_SYSREAD) {
X        anum = read(fileno(stab_io(stab)->ifp), tmps+maxarg, anum);
X    }
X    else
X        anum = fread(tmps+maxarg, 1, anum, stab_io(stab)->ifp);
X    if (anum < 0)
X        goto say_undef;
X    st[2]->str_cur = anum+maxarg;
X    st[2]->str_ptr[anum+maxarg] = '\0';
X    value = (double)anum;
X    goto donumset;
X    case O_SYSWRITE:
X    case O_SEND:
X    if ((arg[1].arg_type & A_MASK) == A_WORD)
X        stab = arg[1].arg_ptr.arg_stab;
X    else
X        stab = stabent(str_get(st[1]),TRUE);
X    tmps = str_get(st[2]);
X    anum = (int)str_gnum(st[3]);
X    errno = 0;
X    stio = stab_io(stab);
X    maxarg = sp - arglast[0];
X    if (!stio || !stio->ifp) {
X        anum = -1;
X        if (dowarn) {
X        if (optype == O_SYSWRITE)
X            warn("Syswrite on closed filehandle");
X        else
X            warn("Send on closed socket");
X        }
X    }
X    else if (optype == O_SYSWRITE) {
X        if (maxarg > 4)
X        warn("Too many args on syswrite");
X        if (maxarg == 4)
X        optype = (int)str_gnum(st[4]);
X        else
X        optype = 0;
X        anum = write(fileno(stab_io(stab)->ifp), tmps+optype, anum);
X    }
X#ifdef HAS_SOCKET
X    else if (maxarg >= 4) {
X        if (maxarg > 4)
X        warn("Too many args on send");
X        tmps2 = str_get(st[4]);
X        anum = sendto(fileno(stab_io(stab)->ifp), tmps, st[2]->str_cur,
X          anum, tmps2, st[4]->str_cur);
X    }
X    else
X        anum = send(fileno(stab_io(stab)->ifp), tmps, st[2]->str_cur, anum);
X#else
X    else
X        goto badsock;
X#endif
X    if (anum < 0)
X        goto say_undef;
X    value = (double)anum;
X    goto donumset;
X    case O_SEEK:
X    if ((arg[1].arg_type & A_MASK) == A_WORD)
X        stab = arg[1].arg_ptr.arg_stab;
X    else
X        stab = stabent(str_get(st[1]),TRUE);
X    value = str_gnum(st[2]);
X    str_set(str, do_seek(stab,
X      (long)value, (int)str_gnum(st[3]) ) ? Yes : No);
X    STABSET(str);
X    break;
X    case O_RETURN:
X    tmps = "_SUB_";        /* just fake up a "last _SUB_" */
X    optype = O_LAST;
X    if (curcsv && curcsv->wantarray == G_ARRAY) {
X        lastretstr = Nullstr;
X        lastspbase = arglast[1];
X        lastsize = arglast[2] - arglast[1];
X    }
X    else
X        lastretstr = str_mortal(st[arglast[2] - arglast[0]]);
X    goto dopop;
X    case O_REDO:
X    case O_NEXT:
X    case O_LAST:
X    if (maxarg > 0) {
X        tmps = str_get(arg[1].arg_ptr.arg_str);
X      dopop:
X        while (loop_ptr >= 0 && (!loop_stack[loop_ptr].loop_label ||
X          strNE(tmps,loop_stack[loop_ptr].loop_label) )) {
X#ifdef DEBUGGING
X        if (debug & 4) {
X            deb("(Skipping label #%d %s)\n",loop_ptr,
X            loop_stack[loop_ptr].loop_label);
X        }
X#endif
X        loop_ptr--;
X        }
X#ifdef DEBUGGING
X        if (debug & 4) {
X        deb("(Found label #%d %s)\n",loop_ptr,
X            loop_stack[loop_ptr].loop_label);
X        }
X#endif
X    }
X    if (loop_ptr < 0) {
X        if (tmps && strEQ(tmps, "_SUB_"))
X        fatal("Can't return outside a subroutine");
X        fatal("Bad label: %s", maxarg > 0 ? tmps : "<null>");
X    }
X    if (!lastretstr && optype == O_LAST && lastsize) {
X        st -= arglast[0];
X        st += lastspbase + 1;
X        optype = loop_stack[loop_ptr].loop_sp - lastspbase; /* negative */
X        if (optype) {
X        for (anum = lastsize; anum > 0; anum--,st++)
X            st[optype] = str_mortal(st[0]);
X        }
X        longjmp(loop_stack[loop_ptr].loop_env, O_LAST);
X    }
X    longjmp(loop_stack[loop_ptr].loop_env, optype);
X    case O_DUMP:
X    case O_GOTO:/* shudder */
X    goto_targ = str_get(arg[1].arg_ptr.arg_str);
X    if (!*goto_targ)
X        goto_targ = Nullch;        /* just restart from top */
X    if (optype == O_DUMP) {
X        do_undump = 1;
X        my_unexec();
X    }
X    longjmp(top_env, 1);
X    case O_INDEX:
X    tmps = str_get(st[1]);
X    if (maxarg < 3)
X        anum = 0;
X    else {
X        anum = (int) str_gnum(st[3]) - arybase;
X        if (anum < 0)
X        anum = 0;
X        else if (anum > st[1]->str_cur)
X        anum = st[1]->str_cur;
X    }
X#ifndef lint
X    if (!(tmps2 = fbminstr((unsigned char*)tmps + anum,
X      (unsigned char*)tmps + st[1]->str_cur, st[2])))
X#else
X    if (tmps2 = fbminstr(Null(unsigned char*),Null(unsigned char*),Nullstr))
X#endif
X        value = (double)(-1 + arybase);
X    else
X        value = (double)(tmps2 - tmps + arybase);
X    goto donumset;
X    case O_RINDEX:
X    tmps = str_get(st[1]);
X    tmps2 = str_get(st[2]);
X    if (maxarg < 3)
X        anum = st[1]->str_cur;
X    else {
X        anum = (int) str_gnum(st[3]) - arybase + st[2]->str_cur;
X        if (anum < 0)
X        anum = 0;
X        else if (anum > st[1]->str_cur)
X        anum = st[1]->str_cur;
X    }
X#ifndef lint
X    if (!(tmps2 = rninstr(tmps,  tmps  + anum,
X                  tmps2, tmps2 + st[2]->str_cur)))
X#else
X    if (tmps2 = rninstr(Nullch,Nullch,Nullch,Nullch))
X#endif
X        value = (double)(-1 + arybase);
X    else
X        value = (double)(tmps2 - tmps + arybase);
X    goto donumset;
X    case O_TIME:
X#ifndef lint
X    value = (double) time(Null(long*));
X#endif
X    goto donumset;
X    case O_TMS:
X    sp = do_tms(str,gimme,arglast);
X    goto array_return;
X    case O_LOCALTIME:
X    if (maxarg < 1)
X        (void)time(&when);
X    else
X        when = (long)str_gnum(st[1]);
X    sp = do_time(str,localtime(&when),
X      gimme,arglast);
X    goto array_return;
X    case O_GMTIME:
X    if (maxarg < 1)
X        (void)time(&when);
X    else
X        when = (long)str_gnum(st[1]);
X    sp = do_time(str,gmtime(&when),
X      gimme,arglast);
X    goto array_return;
X    case O_TRUNCATE:
X    sp = do_truncate(str,arg,
X      gimme,arglast);
X    goto array_return;
X    case O_LSTAT:
X    case O_STAT:
X    sp = do_stat(str,arg,
X      gimme,arglast);
X    goto array_return;
X    case O_CRYPT:
X#ifdef HAS_CRYPT
X    tmps = str_get(st[1]);
X#ifdef FCRYPT
X    str_set(str,fcrypt(tmps,str_get(st[2])));
X#else
X    str_set(str,crypt(tmps,str_get(st[2])));
X#endif
X#else
X    fatal(
X      "The crypt() function is unimplemented due to excessive paranoia.");
X#endif
X    break;
X    case O_ATAN2:
X    value = str_gnum(st[1]);
X    value = atan2(value,str_gnum(st[2]));
X    goto donumset;
X    case O_SIN:
X    if (maxarg < 1)
X        value = str_gnum(stab_val(defstab));
X    else
X        value = str_gnum(st[1]);
X    value = sin(value);
X    goto donumset;
X    case O_COS:
X    if (maxarg < 1)
X        value = str_gnum(stab_val(defstab));
X    else
X        value = str_gnum(st[1]);
X    value = cos(value);
X    goto donumset;
X    case O_RAND:
X    if (maxarg < 1)
X        value = 1.0;
X    else
X        value = str_gnum(st[1]);
X    if (value == 0.0)
X        value = 1.0;
X#if RANDBITS == 31
X    value = rand() * value / 2147483648.0;
X#else
X#if RANDBITS == 16
X    value = rand() * value / 65536.0;
X#else
X#if RANDBITS == 15
X    value = rand() * value / 32768.0;
X#else
X    value = rand() * value / (double)(((unsigned long)1) << RANDBITS);
X#endif
X#endif
X#endif
X    goto donumset;
X    case O_SRAND:
X    if (maxarg < 1) {
X        (void)time(&when);
X        anum = when;
X    }
X    else
X        anum = (int)str_gnum(st[1]);
X    (void)srand(anum);
X    goto say_yes;
X    case O_EXP:
X    if (maxarg < 1)
X        value = str_gnum(stab_val(defstab));
X    else
X        value = str_gnum(st[1]);
X    value = exp(value);
X    goto donumset;
X    case O_LOG:
X    if (maxarg < 1)
X        value = str_gnum(stab_val(defstab));
X    else
X        value = str_gnum(st[1]);
X    if (value <= 0.0)
X        fatal("Can't take log of %g\n", value);
X    value = log(value);
X    goto donumset;
X    case O_SQRT:
X    if (maxarg < 1)
X        value = str_gnum(stab_val(defstab));
X    else
X        value = str_gnum(st[1]);
X    if (value < 0.0)
X        fatal("Can't take sqrt of %g\n", value);
X    value = sqrt(value);
X    goto donumset;
X    case O_INT:
X    if (maxarg < 1)
X        value = str_gnum(stab_val(defstab));
X    else
X        value = str_gnum(st[1]);
X    if (value >= 0.0)
X        (void)modf(value,&value);
X    else {
X        (void)modf(-value,&value);
X        value = -value;
X    }
X    goto donumset;
X    case O_ORD:
X    if (maxarg < 1)
X        tmps = str_get(stab_val(defstab));
X    else
X        tmps = str_get(st[1]);
X#ifndef I286
X    value = (double) (*tmps & 255);
X#else
X    anum = (int) *tmps;
X    value = (double) (anum & 255);
X#endif
X    goto donumset;
X    case O_ALARM:
X#ifdef HAS_ALARM
X    if (maxarg < 1)
X        tmps = str_get(stab_val(defstab));
X    else
X        tmps = str_get(st[1]);
X    if (!tmps)
X        tmps = "0";
X    anum = alarm((unsigned int)atoi(tmps));
X    if (anum < 0)
X        goto say_undef;
X    value = (double)anum;
X    goto donumset;
X#else
X    fatal("Unsupported function alarm");
X    break;
X#endif
X    case O_SLEEP:
X    if (maxarg < 1)
X        tmps = Nullch;
X    else
X        tmps = str_get(st[1]);
X    (void)time(&when);
X    if (!tmps || !*tmps)
X        sleep((32767<<16)+32767);
X    else
X        sleep((unsigned int)atoi(tmps));
X#ifndef lint
X    value = (double)when;
X    (void)time(&when);
X    value = ((double)when) - value;
X#endif
X    goto donumset;
X    case O_RANGE:
X    sp = do_range(gimme,arglast);
X    goto array_return;
X    case O_F_OR_R:
X    if (gimme == G_ARRAY) {        /* it's a range */
X        /* can we optimize to constant array? */
X        if ((arg[1].arg_type & A_MASK) == A_SINGLE &&
X          (arg[2].arg_type & A_MASK) == A_SINGLE) {
X        st[2] = arg[2].arg_ptr.arg_str;
X        sp = do_range(gimme,arglast);
X        st = stack->ary_array;
X        maxarg = sp - arglast[0];
X        str_free(arg[1].arg_ptr.arg_str);
X        arg[1].arg_ptr.arg_str = Nullstr;
X        str_free(arg[2].arg_ptr.arg_str);
X        arg[2].arg_ptr.arg_str = Nullstr;
X        arg->arg_type = O_ARRAY;
X        arg[1].arg_type = A_STAB|A_DONT;
X        arg->arg_len = 1;
X        stab = arg[1].arg_ptr.arg_stab = aadd(genstab());
X        ary = stab_array(stab);
X        afill(ary,maxarg - 1);
X        anum = maxarg;
X        st += arglast[0]+1;
X        while (maxarg-- > 0)
X            ary->ary_array[maxarg] = str_smake(st[maxarg]);
X        st -= arglast[0]+1;
X        goto array_return;
X        }
X        arg->arg_type = optype = O_RANGE;
X        maxarg = arg->arg_len = 2;
X        anum = 2;
X        arg[anum].arg_flags &= ~AF_ARYOK;
X        argflags = arg[anum].arg_flags;
X        argtype = arg[anum].arg_type & A_MASK;
X        arg[anum].arg_type = argtype;
X        argptr = arg[anum].arg_ptr;
X        sp = arglast[0];
X        st -= sp;
X        sp++;
X        goto re_eval;
X    }
X    arg->arg_type = O_FLIP;
X    /* FALL THROUGH */
X    case O_FLIP:
X    if ((arg[1].arg_type & A_MASK) == A_SINGLE ?
X      last_in_stab && (int)str_gnum(st[1]) == stab_io(last_in_stab)->lines
X      :
X      str_true(st[1]) ) {
X        str_numset(str,0.0);
X        anum = 2;
X        arg->arg_type = optype = O_FLOP;
X        arg[2].arg_type &= ~A_DONT;
X        arg[1].arg_type |= A_DONT;
X        argflags = arg[2].arg_flags;
X        argtype = arg[2].arg_type & A_MASK;
X        argptr = arg[2].arg_ptr;
X        sp = arglast[0];
X        st -= sp++;
X        goto re_eval;
X    }
X    str_set(str,"");
X    break;
X    case O_FLOP:
X    str_inc(str);
X    if ((arg[2].arg_type & A_MASK) == A_SINGLE ?
X      last_in_stab && (int)str_gnum(st[2]) == stab_io(last_in_stab)->lines
X      :
X      str_true(st[2]) ) {
X        arg->arg_type = O_FLIP;
X        arg[1].arg_type &= ~A_DONT;
X        arg[2].arg_type |= A_DONT;
X        str_cat(str,"E0");
X    }
X    break;
X    case O_FORK:
X#ifdef HAS_FORK
X    anum = fork();
X    if (anum < 0)
X        goto say_undef;
X    if (!anum) {
X        if (tmpstab = stabent("$",allstabs))
X        str_numset(STAB_STR(tmpstab),(double)getpid());
X        hclear(pidstatus);    /* no kids, so don't wait for 'em */
X    }
X    value = (double)anum;
X    goto donumset;
X#else
X    fatal("Unsupported function fork");
X    break;
X#endif
X    case O_WAIT:
X#ifdef HAS_WAIT
X#ifndef lint
X    anum = wait(&argflags);
X    if (anum > 0)
X        pidgone(anum,argflags);
X    value = (double)anum;
X#endif
X    statusvalue = (unsigned short)argflags;
X    goto donumset;
X#else
X    fatal("Unsupported function wait");
X    break;
X#endif
X    case O_WAITPID:
X#ifdef HAS_WAIT
X#ifndef lint
X    anum = (int)str_gnum(st[1]);
X    optype = (int)str_gnum(st[2]);
X    anum = wait4pid(anum, &argflags,optype);
X    value = (double)anum;
X#endif
X    statusvalue = (unsigned short)argflags;
X    goto donumset;
X#else
X    fatal("Unsupported function wait");
X    break;
X#endif
X    case O_SYSTEM:
X#ifdef HAS_FORK
X#ifdef TAINT
X    if (arglast[2] - arglast[1] == 1) {
X        taintenv();
X        tainted |= st[2]->str_tainted;
X        taintproper("Insecure dependency in system");
X    }
X#endif
X    while ((anum = vfork()) == -1) {
X        if (errno != EAGAIN) {
X        value = -1.0;
X        goto donumset;
X        }
X        sleep(5);
X    }
X    if (anum > 0) {
X#ifndef lint
X        ihand = signal(SIGINT, SIG_IGN);
X        qhand = signal(SIGQUIT, SIG_IGN);
X        argtype = wait4pid(anum, &argflags, 0);
X#else
X        ihand = qhand = 0;
X#endif
X        (void)signal(SIGINT, ihand);
X        (void)signal(SIGQUIT, qhand);
X        statusvalue = (unsigned short)argflags;
X        if (argtype < 0)
X        value = -1.0;
X        else {
X        value = (double)((unsigned int)argflags & 0xffff);
X        }
X        do_execfree();    /* free any memory child malloced on vfork */
X        goto donumset;
X    }
X    if ((arg[1].arg_type & A_MASK) == A_STAB)
X        value = (double)do_aexec(st[1],arglast);
X    else if (arglast[2] - arglast[1] != 1)
X        value = (double)do_aexec(Nullstr,arglast);
X    else {
X        value = (double)do_exec(str_get(str_mortal(st[2])));
X    }
X    _exit(-1);
X#else /* ! FORK */
X    if ((arg[1].arg_type & A_MASK) == A_STAB)
X        value = (double)do_aspawn(st[1],arglast);
X    else if (arglast[2] - arglast[1] != 1)
X        value = (double)do_aspawn(Nullstr,arglast);
X    else {
X        value = (double)do_spawn(str_get(str_mortal(st[2])));
X    }
X    goto donumset;
X#endif /* FORK */
X    case O_EXEC_OP:
X    if ((arg[1].arg_type & A_MASK) == A_STAB)
X        value = (double)do_aexec(st[1],arglast);
X    else if (arglast[2] - arglast[1] != 1)
X        value = (double)do_aexec(Nullstr,arglast);
X    else {
X        value = (double)do_exec(str_get(str_mortal(st[2])));
X    }
X    goto donumset;
X    case O_HEX:
X    if (maxarg < 1)
X        tmps = str_get(stab_val(defstab));
X    else
X        tmps = str_get(st[1]);
X    value = (double)scanhex(tmps, 99, &argtype);
X    goto donumset;
X
X    case O_OCT:
X    if (maxarg < 1)
X        tmps = str_get(stab_val(defstab));
X    else
X        tmps = str_get(st[1]);
X    while (*tmps && isascii(*tmps) && (isspace(*tmps) || *tmps == '0'))
X        tmps++;
X    if (*tmps == 'x')
X        value = (double)scanhex(++tmps, 99, &argtype);
X    else
X        value = (double)scanoct(tmps, 99, &argtype);
X    goto donumset;
X
X/* These common exits are hidden here in the middle of the switches for the
X/* benefit of those machines with limited branch addressing.  Sigh.  */
X
Xarray_return:
X#ifdef DEBUGGING
X    if (debug) {
X    dlevel--;
X    if (debug & 8) {
!STUFFY!FUNK!
echo " "
echo "End of kit 6 (of 36)"
cat /dev/null >kit6isdone
run=''
config=''
for iskit in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36; do
    if test -f kit${iskit}isdone; then
    run="$run $iskit"
    else
    todo="$todo $iskit"
    fi
done
case $todo in
    '')
    echo "You have run all your kits.  Please read README and then type Configure."
    for combo in *:AA; do
        if test -f "$combo"; then
        realfile=`basename $combo :AA`
        cat $realfile:[A-Z][A-Z] >$realfile
        rm -rf $realfile:[A-Z][A-Z]
        fi
    done
    rm -rf kit*isdone
    chmod 755 Configure
    ;;
    *)  echo "You have run$run."
    echo "You still need to run$todo."
    ;;
esac
: Someone might mail this, so...
exit

exit 0 # Just in case...
--
Kent Landfield                   INTERNET: [e-mail]
Sterling Software, IMD           UUCP:     uunet!sparky!kent
Phone:    [phone]         FAX:      [phone]
Please send comp.sources.misc-related mail to [e-mail].