1
0
mirror of https://git.FreeBSD.org/src.git synced 2024-12-20 11:11:24 +00:00
freebsd/lib/libI77/lread.c
Joerg Wunsch c3ad4b4583 Update to the most recent version. Among other things, this also solves
the function naming problem for complex double function i've recently
aksed for in -committers.  (The recently committed rev 1.5 of proc.c
was actually also part of this update.)

Should the mailing lists come to an agreement that f2c better belongs
into the ports, this could be done nevertheless.  For the time being,
we've at least got a current version now.

Thanks, Steve!

Submitted by:	Steve Kargl <sgk@troutmask.apl.washington.edu>
1999-02-03 17:23:49 +00:00

701 lines
13 KiB
C

#include "f2c.h"
#include "fio.h"
/* Compile with -DF8X_NML_ELIDE_QUOTES to permit eliding quotation */
/* marks in namelist input a la the Fortran 8X Draft published in */
/* the May 1989 issue of Fortran Forum. */
extern char *f__fmtbuf;
#ifdef Allow_TYQUAD
static longint f__llx;
#endif
#ifdef KR_headers
extern double atof();
extern char *malloc(), *realloc();
int (*f__lioproc)(), (*l_getc)(), (*l_ungetc)();
#else
#undef abs
#undef min
#undef max
#include "stdlib.h"
int (*f__lioproc)(ftnint*, char*, ftnlen, ftnint), (*l_getc)(void),
(*l_ungetc)(int,FILE*);
#endif
#include "fmt.h"
#include "lio.h"
#include "ctype.h"
#include "fp.h"
int l_eof;
#define isblnk(x) (f__ltab[x+1]&B)
#define issep(x) (f__ltab[x+1]&SX)
#define isapos(x) (f__ltab[x+1]&AX)
#define isexp(x) (f__ltab[x+1]&EX)
#define issign(x) (f__ltab[x+1]&SG)
#define iswhit(x) (f__ltab[x+1]&WH)
#define SX 1
#define B 2
#define AX 4
#define EX 8
#define SG 16
#define WH 32
char f__ltab[128+1] = { /* offset one for EOF */
0,
0,0,AX,0,0,0,0,0,0,WH|B,SX|WH,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
SX|B|WH,0,AX,0,0,0,0,AX,0,0,0,SG,SX,SG,0,SX,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,EX,EX,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
AX,0,0,0,EX,EX,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
};
#ifdef ungetc
static int
#ifdef KR_headers
un_getc(x,f__cf) int x; FILE *f__cf;
#else
un_getc(int x, FILE *f__cf)
#endif
{ return ungetc(x,f__cf); }
#else
#define un_getc ungetc
#ifdef KR_headers
extern int ungetc();
#else
extern int ungetc(int, FILE*); /* for systems with a buggy stdio.h */
#endif
#endif
t_getc(Void)
{ int ch;
if(f__curunit->uend) return(EOF);
if((ch=getc(f__cf))!=EOF) return(ch);
if(feof(f__cf))
f__curunit->uend = l_eof = 1;
return(EOF);
}
integer e_rsle(Void)
{
int ch;
if(f__curunit->uend) return(0);
while((ch=t_getc())!='\n')
if (ch == EOF) {
if(feof(f__cf))
f__curunit->uend = l_eof = 1;
return EOF;
}
return(0);
}
flag f__lquit;
int f__lcount,f__ltype,nml_read;
char *f__lchar;
double f__lx,f__ly;
#define ERR(x) if(n=(x)) return(n)
#define GETC(x) (x=(*l_getc)())
#define Ungetc(x,y) (*l_ungetc)(x,y)
static int
#ifdef KR_headers
l_R(poststar, reqint) int poststar, reqint;
#else
l_R(int poststar, int reqint)
#endif
{
char s[FMAX+EXPMAXDIGS+4];
register int ch;
register char *sp, *spe, *sp1;
long e, exp;
int havenum, havestar, se;
if (!poststar) {
if (f__lcount > 0)
return(0);
f__lcount = 1;
}
#ifdef Allow_TYQUAD
f__llx = 0;
#endif
f__ltype = 0;
exp = 0;
havestar = 0;
retry:
sp1 = sp = s;
spe = sp + FMAX;
havenum = 0;
switch(GETC(ch)) {
case '-': *sp++ = ch; sp1++; spe++;
case '+':
GETC(ch);
}
while(ch == '0') {
++havenum;
GETC(ch);
}
while(isdigit(ch)) {
if (sp < spe) *sp++ = ch;
else ++exp;
GETC(ch);
}
if (ch == '*' && !poststar) {
if (sp == sp1 || exp || *s == '-') {
errfl(f__elist->cierr,112,"bad repetition count");
}
poststar = havestar = 1;
*sp = 0;
f__lcount = atoi(s);
goto retry;
}
if (ch == '.') {
#ifndef ALLOW_FLOAT_IN_INTEGER_LIST_INPUT
if (reqint)
errfl(f__elist->cierr,115,"invalid integer");
#endif
GETC(ch);
if (sp == sp1)
while(ch == '0') {
++havenum;
--exp;
GETC(ch);
}
while(isdigit(ch)) {
if (sp < spe)
{ *sp++ = ch; --exp; }
GETC(ch);
}
}
havenum += sp - sp1;
se = 0;
if (issign(ch))
goto signonly;
if (havenum && isexp(ch)) {
#ifndef ALLOW_FLOAT_IN_INTEGER_LIST_INPUT
if (reqint)
errfl(f__elist->cierr,115,"invalid integer");
#endif
GETC(ch);
if (issign(ch)) {
signonly:
if (ch == '-') se = 1;
GETC(ch);
}
if (!isdigit(ch)) {
bad:
errfl(f__elist->cierr,112,"exponent field");
}
e = ch - '0';
while(isdigit(GETC(ch))) {
e = 10*e + ch - '0';
if (e > EXPMAX)
goto bad;
}
if (se)
exp -= e;
else
exp += e;
}
(void) Ungetc(ch, f__cf);
if (sp > sp1) {
++havenum;
while(*--sp == '0')
++exp;
if (exp)
sprintf(sp+1, "e%ld", exp);
else
sp[1] = 0;
f__lx = atof(s);
#ifdef Allow_TYQUAD
if (reqint&2 && (se = sp - sp1 + exp) > 14 && se < 20) {
/* Assuming 64-bit longint and 32-bit long. */
if (exp < 0)
sp += exp;
if (sp1 <= sp) {
f__llx = *sp1 - '0';
while(++sp1 <= sp)
f__llx = 10*f__llx + (*sp1 - '0');
}
while(--exp >= 0)
f__llx *= 10;
if (*s == '-')
f__llx = -f__llx;
}
#endif
}
else
f__lx = 0.;
if (havenum)
f__ltype = TYLONG;
else
switch(ch) {
case ',':
case '/':
break;
default:
if (havestar && ( ch == ' '
||ch == '\t'
||ch == '\n'))
break;
if (nml_read > 1) {
f__lquit = 2;
return 0;
}
errfl(f__elist->cierr,112,"invalid number");
}
return 0;
}
static int
#ifdef KR_headers
rd_count(ch) register int ch;
#else
rd_count(register int ch)
#endif
{
if (ch < '0' || ch > '9')
return 1;
f__lcount = ch - '0';
while(GETC(ch) >= '0' && ch <= '9')
f__lcount = 10*f__lcount + ch - '0';
Ungetc(ch,f__cf);
return f__lcount <= 0;
}
static int
l_C(Void)
{ int ch, nml_save;
double lz;
if(f__lcount>0) return(0);
f__ltype=0;
GETC(ch);
if(ch!='(')
{
if (nml_read > 1 && (ch < '0' || ch > '9')) {
Ungetc(ch,f__cf);
f__lquit = 2;
return 0;
}
if (rd_count(ch))
if(!f__cf || !feof(f__cf))
errfl(f__elist->cierr,112,"complex format");
else
err(f__elist->cierr,(EOF),"lread");
if(GETC(ch)!='*')
{
if(!f__cf || !feof(f__cf))
errfl(f__elist->cierr,112,"no star");
else
err(f__elist->cierr,(EOF),"lread");
}
if(GETC(ch)!='(')
{ Ungetc(ch,f__cf);
return(0);
}
}
else
f__lcount = 1;
while(iswhit(GETC(ch)));
Ungetc(ch,f__cf);
nml_save = nml_read;
nml_read = 0;
if (ch = l_R(1,0))
return ch;
if (!f__ltype)
errfl(f__elist->cierr,112,"no real part");
lz = f__lx;
while(iswhit(GETC(ch)));
if(ch!=',')
{ (void) Ungetc(ch,f__cf);
errfl(f__elist->cierr,112,"no comma");
}
while(iswhit(GETC(ch)));
(void) Ungetc(ch,f__cf);
if (ch = l_R(1,0))
return ch;
if (!f__ltype)
errfl(f__elist->cierr,112,"no imaginary part");
while(iswhit(GETC(ch)));
if(ch!=')') errfl(f__elist->cierr,112,"no )");
f__ly = f__lx;
f__lx = lz;
#ifdef Allow_TYQUAD
f__llx = 0;
#endif
nml_read = nml_save;
return(0);
}
static int
l_L(Void)
{
int ch;
if(f__lcount>0) return(0);
f__lcount = 1;
f__ltype=0;
GETC(ch);
if(isdigit(ch))
{
rd_count(ch);
if(GETC(ch)!='*')
if(!f__cf || !feof(f__cf))
errfl(f__elist->cierr,112,"no star");
else
err(f__elist->cierr,(EOF),"lread");
GETC(ch);
}
if(ch == '.') GETC(ch);
switch(ch)
{
case 't':
case 'T':
f__lx=1;
break;
case 'f':
case 'F':
f__lx=0;
break;
default:
if(isblnk(ch) || issep(ch) || ch==EOF)
{ (void) Ungetc(ch,f__cf);
return(0);
}
if (nml_read > 1) {
Ungetc(ch,f__cf);
f__lquit = 2;
return 0;
}
errfl(f__elist->cierr,112,"logical");
}
f__ltype=TYLONG;
while(!issep(GETC(ch)) && ch!=EOF);
(void) Ungetc(ch, f__cf);
return(0);
}
#define BUFSIZE 128
static int
l_CHAR(Void)
{ int ch,size,i;
static char rafail[] = "realloc failure";
char quote,*p;
if(f__lcount>0) return(0);
f__ltype=0;
if(f__lchar!=NULL) free(f__lchar);
size=BUFSIZE;
p=f__lchar = (char *)malloc((unsigned int)size);
if(f__lchar == NULL)
errfl(f__elist->cierr,113,"no space");
GETC(ch);
if(isdigit(ch)) {
/* allow Fortran 8x-style unquoted string... */
/* either find a repetition count or the string */
f__lcount = ch - '0';
*p++ = ch;
for(i = 1;;) {
switch(GETC(ch)) {
case '*':
if (f__lcount == 0) {
f__lcount = 1;
#ifndef F8X_NML_ELIDE_QUOTES
if (nml_read)
goto no_quote;
#endif
goto noquote;
}
p = f__lchar;
goto have_lcount;
case ',':
case ' ':
case '\t':
case '\n':
case '/':
Ungetc(ch,f__cf);
/* no break */
case EOF:
f__lcount = 1;
f__ltype = TYCHAR;
return *p = 0;
}
if (!isdigit(ch)) {
f__lcount = 1;
#ifndef F8X_NML_ELIDE_QUOTES
if (nml_read) {
no_quote:
errfl(f__elist->cierr,112,
"undelimited character string");
}
#endif
goto noquote;
}
*p++ = ch;
f__lcount = 10*f__lcount + ch - '0';
if (++i == size) {
f__lchar = (char *)realloc(f__lchar,
(unsigned int)(size += BUFSIZE));
if(f__lchar == NULL)
errfl(f__elist->cierr,113,rafail);
p = f__lchar + i;
}
}
}
else (void) Ungetc(ch,f__cf);
have_lcount:
if(GETC(ch)=='\'' || ch=='"') quote=ch;
else if(isblnk(ch) || (issep(ch) && ch != '\n') || ch==EOF) {
Ungetc(ch,f__cf);
return 0;
}
#ifndef F8X_NML_ELIDE_QUOTES
else if (nml_read > 1) {
Ungetc(ch,f__cf);
f__lquit = 2;
return 0;
}
#endif
else {
/* Fortran 8x-style unquoted string */
*p++ = ch;
for(i = 1;;) {
switch(GETC(ch)) {
case ',':
case ' ':
case '\t':
case '\n':
case '/':
Ungetc(ch,f__cf);
/* no break */
case EOF:
f__ltype = TYCHAR;
return *p = 0;
}
noquote:
*p++ = ch;
if (++i == size) {
f__lchar = (char *)realloc(f__lchar,
(unsigned int)(size += BUFSIZE));
if(f__lchar == NULL)
errfl(f__elist->cierr,113,rafail);
p = f__lchar + i;
}
}
}
f__ltype=TYCHAR;
for(i=0;;)
{ while(GETC(ch)!=quote && ch!='\n'
&& ch!=EOF && ++i<size) *p++ = ch;
if(i==size)
{
newone:
f__lchar= (char *)realloc(f__lchar,
(unsigned int)(size += BUFSIZE));
if(f__lchar == NULL)
errfl(f__elist->cierr,113,rafail);
p=f__lchar+i-1;
*p++ = ch;
}
else if(ch==EOF) return(EOF);
else if(ch=='\n')
{ if(*(p-1) != '\\') continue;
i--;
p--;
if(++i<size) *p++ = ch;
else goto newone;
}
else if(GETC(ch)==quote)
{ if(++i<size) *p++ = ch;
else goto newone;
}
else
{ (void) Ungetc(ch,f__cf);
*p = 0;
return(0);
}
}
}
#ifdef KR_headers
c_le(a) cilist *a;
#else
c_le(cilist *a)
#endif
{
if(!f__init)
f_init();
f__fmtbuf="list io";
f__curunit = &f__units[a->ciunit];
if(a->ciunit>=MXUNIT || a->ciunit<0)
err(a->cierr,101,"stler");
f__scale=f__recpos=0;
f__elist=a;
if(f__curunit->ufd==NULL && fk_open(SEQ,FMT,a->ciunit))
err(a->cierr,102,"lio");
f__cf=f__curunit->ufd;
if(!f__curunit->ufmt) err(a->cierr,103,"lio")
return(0);
}
#ifdef KR_headers
l_read(number,ptr,len,type) ftnint *number,type; char *ptr; ftnlen len;
#else
l_read(ftnint *number, char *ptr, ftnlen len, ftnint type)
#endif
{
#define Ptr ((flex *)ptr)
int i,n,ch;
doublereal *yy;
real *xx;
for(i=0;i<*number;i++)
{
if(f__lquit) return(0);
if(l_eof)
err(f__elist->ciend, EOF, "list in")
if(f__lcount == 0) {
f__ltype = 0;
for(;;) {
GETC(ch);
switch(ch) {
case EOF:
err(f__elist->ciend,(EOF),"list in")
case ' ':
case '\t':
case '\n':
continue;
case '/':
f__lquit = 1;
goto loopend;
case ',':
f__lcount = 1;
goto loopend;
default:
(void) Ungetc(ch, f__cf);
goto rddata;
}
}
}
rddata:
switch((int)type)
{
case TYINT1:
case TYSHORT:
case TYLONG:
#ifndef ALLOW_FLOAT_IN_INTEGER_LIST_INPUT
ERR(l_R(0,1));
break;
#endif
case TYREAL:
case TYDREAL:
ERR(l_R(0,0));
break;
#ifdef TYQUAD
case TYQUAD:
n = l_R(0,2);
if (n)
return n;
break;
#endif
case TYCOMPLEX:
case TYDCOMPLEX:
ERR(l_C());
break;
case TYLOGICAL1:
case TYLOGICAL2:
case TYLOGICAL:
ERR(l_L());
break;
case TYCHAR:
ERR(l_CHAR());
break;
}
while (GETC(ch) == ' ' || ch == '\t');
if (ch != ',' || f__lcount > 1)
Ungetc(ch,f__cf);
loopend:
if(f__lquit) return(0);
if(f__cf && ferror(f__cf)) {
clearerr(f__cf);
errfl(f__elist->cierr,errno,"list in");
}
if(f__ltype==0) goto bump;
switch((int)type)
{
case TYINT1:
case TYLOGICAL1:
Ptr->flchar = (char)f__lx;
break;
case TYLOGICAL2:
case TYSHORT:
Ptr->flshort = (short)f__lx;
break;
case TYLOGICAL:
case TYLONG:
Ptr->flint = (ftnint)f__lx;
break;
#ifdef Allow_TYQUAD
case TYQUAD:
if (!(Ptr->fllongint = f__llx))
Ptr->fllongint = f__lx;
break;
#endif
case TYREAL:
Ptr->flreal=f__lx;
break;
case TYDREAL:
Ptr->fldouble=f__lx;
break;
case TYCOMPLEX:
xx=(real *)ptr;
*xx++ = f__lx;
*xx = f__ly;
break;
case TYDCOMPLEX:
yy=(doublereal *)ptr;
*yy++ = f__lx;
*yy = f__ly;
break;
case TYCHAR:
b_char(f__lchar,ptr,len);
break;
}
bump:
if(f__lcount>0) f__lcount--;
ptr += len;
if (nml_read)
nml_read++;
}
return(0);
#undef Ptr
}
#ifdef KR_headers
integer s_rsle(a) cilist *a;
#else
integer s_rsle(cilist *a)
#endif
{
int n;
f__reading=1;
f__external=1;
f__formatted=1;
if(n=c_le(a)) return(n);
f__lioproc = l_read;
f__lquit = 0;
f__lcount = 0;
l_eof = 0;
if(f__curunit->uwrt && f__nowreading(f__curunit))
err(a->cierr,errno,"read start");
if(f__curunit->uend)
err(f__elist->ciend,(EOF),"read start");
l_getc = t_getc;
l_ungetc = un_getc;
f__doend = xrd_SL;
return(0);
}