OpenSolaris_b135/cmd/oawk/tran.c
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2003 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#pragma ident "%Z%%M% %I% %E% SMI"
#include "stdio.h"
#include "awk.def"
#include "awk.h"
#include <stdlib.h>
CELL *symtab[MAXSYM]; /* symbol table pointers */
wchar_t **FS; /* initial field sep */
wchar_t **RS; /* initial record sep */
wchar_t **OFS; /* output field sep */
wchar_t **ORS; /* output record sep */
wchar_t **OFMT; /* output format for numbers */
awkfloat *NF; /* number of fields in current record */
awkfloat *NR; /* number of current record */
wchar_t **FILENAME; /* current filename argument */
CELL *recloc; /* location of record */
CELL *nrloc; /* NR */
CELL *nfloc; /* NF */
void recbld(void);
void
syminit(void)
{
static wchar_t L_0[] = L"0";
static wchar_t L_zeronull[] = L"$zero&null";
static wchar_t L_record[] = L"$record";
static wchar_t L_FS[] = L"FS";
static wchar_t L_OFS[] = L"OFS";
static wchar_t L_ORS[] = L"ORS";
static wchar_t L_RS[] = L"RS";
static wchar_t L_OFMT[] = L"OFMT";
static wchar_t L_space[] = L" ";
static wchar_t L_newline[] = L"\n";
static wchar_t L_dot6g[] = L"%.6g";
static wchar_t L_FILENAME[] = L"FILENAME";
static wchar_t L_NF[] = L"NF";
static wchar_t L_NR[] = L"NR";
setsymtab(L_0, tostring(L_0), 0.0, NUM|STR|CON|FLD, symtab);
/* this one is used for if (x)... tests: */
setsymtab(L_zeronull, tostring(L_NULL), 0.0, NUM|STR|CON|FLD, symtab);
recloc = setsymtab(L_record, record, 0.0, STR|FLD, symtab);
dprintf("recloc %o lookup %o\n",
recloc, lookup(L_record, symtab, 0), NULL);
FS = &setsymtab(L_FS, tostring(L_space), 0.0, STR|FLD, symtab)->sval;
RS = &setsymtab(L_RS, tostring(L_newline), 0.0, STR|FLD, symtab)->sval;
OFS = &setsymtab(L_OFS, tostring(L_space), 0.0, STR|FLD, symtab)->sval;
ORS = &setsymtab(L_ORS, tostring(L_newline), 0.0, STR|FLD,
symtab)->sval;
OFMT = &setsymtab(L_OFMT, tostring(L_dot6g), 0.0, STR|FLD,
symtab)->sval;
FILENAME = &setsymtab(L_FILENAME, NULL, 0.0, STR|FLD, symtab)->sval;
nfloc = setsymtab(L_NF, NULL, 0.0, NUM, symtab);
NF = &nfloc->fval;
nrloc = setsymtab(L_NR, NULL, 0.0, NUM, symtab);
NR = &nrloc->fval;
}
CELL **
makesymtab(void)
{
int i;
CELL **cp;
cp = (CELL **) malloc(MAXSYM * sizeof (CELL *));
if (cp == NULL)
error(FATAL, "out of space in makesymtab");
for (i = 0; i < MAXSYM; i++)
cp[i] = 0;
return (cp);
}
void
freesymtab(CELL *ap) /* free symbol table */
{
CELL *cp, **tp, *next;
int i;
if (!(ap->tval & ARR))
return;
tp = (CELL **) ap->sval;
for (i = 0; i < MAXSYM; i++) {
for (cp = tp[i]; cp != NULL; cp = next) {
next = cp->nextval;
xfree(cp->nval);
xfree(cp->sval);
free(cp);
}
}
xfree(tp);
}
CELL *
setsymtab(wchar_t *n, wchar_t *s, awkfloat f, unsigned t, CELL **tab)
{
int h;
CELL *p;
CELL *lookup();
if (n != NULL && (p = lookup(n, tab, 0)) != NULL) {
xfree(s);
dprintf("setsymtab found %o: %ws\n", p, p->nval, NULL);
dprintf(" %ws %g %o\n", p->sval, p->fval, p->tval);
return (p);
}
p = (CELL *) malloc(sizeof (CELL));
if (p == NULL)
error(FATAL, "symbol table overflow at %ws", n);
p->nval = tostring(n);
p->sval = s;
p->fval = f;
p->tval = t;
h = hash(n);
p->nextval = tab[h];
tab[h] = p;
dprintf("setsymtab set %o: %ws\n", p, p->nval, NULL);
dprintf(" %ws %g %o\n", p->sval, p->fval, p->tval);
return (p);
}
int
hash(wchar_t *s) /* form hash value for string s */
{
unsigned hashval;
for (hashval = 0; *s != '\0'; /* dummy */)
hashval += *s++;
return (hashval % MAXSYM);
}
CELL *
lookup(wchar_t *s, CELL **tab, int flag)
/* look for s in tab, flag must match */
{
CELL *p;
for (p = tab[hash(s)]; p != NULL; p = p->nextval)
if (wscmp(s, p->nval) == 0 &&
(flag == 0 || flag == p->tval))
return (p); /* found it */
return (NULL); /* not found */
}
awkfloat
setfval(CELL *vp, awkfloat f)
{
dprintf("setfval: %o %g\n", vp, f, NULL);
/* imb */
if (vp->tval & ARR)
error(FATAL, "illegal reference to array %s", vp->nval);
if ((vp->tval & (NUM | STR)) == 0)
error(FATAL, "funny variable %o: %ws %ws %g %o", vp, vp->nval,
vp->sval, vp->fval, vp->tval);
/* imb */
if (vp == recloc)
error(FATAL, "can't set $0");
vp->tval &= ~STR; /* mark string invalid */
vp->tval |= NUM; /* mark number ok */
if ((vp->tval & FLD) && vp->nval == 0) {
/*
* FLD really means that the string value was not
* "malloc"ed and should not be freed. All fields
* have this property, but not all cells with this
* property are fields. However, all cells with
* this property and with a NULL "nval" are fields.
* If we are setting the value of a field, indicate
* that the value of the record has to be recomputed,
* and if it's a higher field than the last one we
* assigned to, remember it for when we clear the
* fields out for the next record.
*/
donerec = 0;
if (vp > maxmfld)
maxmfld = vp;
}
return (vp->fval = f);
}
wchar_t *
setsval(CELL *vp, wchar_t *s)
{
dprintf("setsval: %o %ws\n", vp, s, NULL);
if (vp->tval & ARR)
error(FATAL, "illegal reference to array %ws", vp->nval);
if ((vp->tval & (NUM | STR)) == 0)
error(FATAL, "funny variable %o: %ws %ws %g %o", vp, vp->nval,
vp->sval, vp->fval, vp->tval);
if (vp == recloc)
error(FATAL, "can't set $0");
vp->tval &= ~NUM;
vp->tval |= STR;
if ((vp->tval & FLD) && vp->nval == 0) {
/*
* See comment in "setfval".
*/
donerec = 0;
if (vp > maxmfld)
maxmfld = vp;
}
if (!(vp->tval&FLD))
xfree(vp->sval);
vp->tval &= ~FLD;
return (vp->sval = tostring(s));
}
awkfloat
getfval(CELL *vp)
{
if (vp->sval == record && donerec == 0)
recbld();
dprintf("getfval: %o", vp, NULL, NULL);
if (vp->tval & ARR)
error(FATAL, "illegal reference to array %ws", vp->nval);
if ((vp->tval & (NUM | STR)) == 0)
error(FATAL, "funny variable %o: %ws %ws %g %o", vp, vp->nval,
vp->sval, vp->fval, vp->tval);
if ((vp->tval & NUM) == 0) {
/* the problem is to make non-numeric things */
/* have unlikely numeric variables, so that */
/* $1 == $2 comparisons sort of make sense when */
/* one or the other is numeric */
if (isanumber(vp->sval)) {
vp->fval = watof(vp->sval);
if (!(vp->tval & CON))
/* don't change type of a constant */
vp->tval |= NUM;
}
else
vp->fval = 0.0; /* not a very good idea */
}
dprintf(" %g\n", vp->fval, NULL, NULL);
return (vp->fval);
}
wchar_t *
getsval(CELL *vp)
{
char s[100];
wchar_t ws[100];
if (vp->sval == record && donerec == 0)
recbld();
dprintf("getsval: %o", vp, NULL, NULL);
if (vp->tval & ARR)
error(FATAL, "illegal reference to array %ws", vp->nval);
if ((vp->tval & (NUM | STR)) == 0)
error(FATAL, "funny variable %o: %ws %ws %g %o", vp, vp->nval,
vp->sval, vp->fval, vp->tval);
if ((vp->tval & STR) == 0) {
if (!(vp->tval&FLD))
xfree(vp->sval);
if ((long long)vp->fval == vp->fval)
sprintf(s, "%.20g", vp->fval);
else
sprintf(s, toeuccode(*OFMT), vp->fval);
mbstowcs(ws, s, sizeof (ws) / sizeof (wchar_t));
vp->sval = tostring(ws);
vp->tval &= ~FLD;
vp->tval |= STR;
}
dprintf(" %ws\n", vp->sval, NULL, NULL);
return (vp->sval);
}
wchar_t *
tostring(wchar_t *s)
{
wchar_t *p;
p = (wchar_t *) malloc((wslen(s)+1)*sizeof (wchar_t));
if (p == NULL)
error(FATAL, "out of space in tostring on %ws", s);
wscpy(p, s);
return (p);
}
#ifndef yfree
yfree(char *a)
{
printf("%o\n", a);
free(a);
}
#endif