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freebsd-skq/contrib/libf2c/libI77/rdfmt.c

616 lines
9.5 KiB
C
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#include "config.h"
#include <ctype.h>
#include "f2c.h"
#include "fio.h"
extern int f__cursor;
#undef abs
#undef min
#undef max
#include <stdlib.h>
#include "fmt.h"
#include "fp.h"
static int
rd_Z (Uint * n, int w, ftnlen len)
{
long x[9];
char *s, *s0, *s1, *se, *t;
int ch, i, w1, w2;
static char hex[256];
static int one = 1;
int bad = 0;
if (!hex['0'])
{
s = "0123456789";
while ((ch = *s++))
hex[ch] = ch - '0' + 1;
s = "ABCDEF";
while ((ch = *s++))
hex[ch] = hex[ch + 'a' - 'A'] = ch - 'A' + 11;
}
s = s0 = (char *) x;
s1 = (char *) &x[4];
se = (char *) &x[8];
if (len > 4 * (ftnlen) sizeof (long))
return errno = 117;
while (w)
{
GET (ch);
if (ch == ',' || ch == '\n')
break;
w--;
if (ch > ' ')
{
if (!hex[ch & 0xff])
bad++;
*s++ = ch;
if (s == se)
{
/* discard excess characters */
for (t = s0, s = s1; t < s1;)
*t++ = *s++;
s = s1;
}
}
}
if (bad)
return errno = 115;
w = (int) len;
w1 = s - s0;
w2 = (w1 + 1) >> 1;
t = (char *) n;
if (*(char *) &one)
{
/* little endian */
t += w - 1;
i = -1;
}
else
i = 1;
for (; w > w2; t += i, --w)
*t = 0;
if (!w)
return 0;
if (w < w2)
s0 = s - (w << 1);
else if (w1 & 1)
{
*t = hex[*s0++ & 0xff] - 1;
if (!--w)
return 0;
t += i;
}
do
{
*t = (hex[*s0 & 0xff] - 1) << 4 | (hex[s0[1] & 0xff] - 1);
t += i;
s0 += 2;
}
while (--w);
return 0;
}
static int
rd_I (Uint * n, int w, ftnlen len, register int base)
{
int ch, sign;
longint x = 0;
if (w <= 0)
goto have_x;
for (;;)
{
GET (ch);
if (ch != ' ')
break;
if (!--w)
goto have_x;
}
sign = 0;
switch (ch)
{
case ',':
case '\n':
w = 0;
goto have_x;
case '-':
sign = 1;
case '+':
break;
default:
if (ch >= '0' && ch <= '9')
{
x = ch - '0';
break;
}
goto have_x;
}
while (--w)
{
GET (ch);
if (ch >= '0' && ch <= '9')
{
x = x * base + ch - '0';
continue;
}
if (ch != ' ')
{
if (ch == '\n' || ch == ',')
w = 0;
break;
}
if (f__cblank)
x *= base;
}
if (sign)
x = -x;
have_x:
if (len == sizeof (integer))
n->il = x;
else if (len == sizeof (char))
n->ic = (char) x;
#ifdef Allow_TYQUAD
else if (len == sizeof (longint))
n->ili = x;
#endif
else
n->is = (short) x;
if (w)
{
while (--w)
GET (ch);
return errno = 115;
}
return 0;
}
static int
rd_L (ftnint * n, int w, ftnlen len)
{
int ch, dot, lv;
if (w <= 0)
goto bad;
for (;;)
{
GET (ch);
--w;
if (ch != ' ')
break;
if (!w)
goto bad;
}
dot = 0;
retry:
switch (ch)
{
case '.':
if (dot++ || !w)
goto bad;
GET (ch);
--w;
goto retry;
case 't':
case 'T':
lv = 1;
break;
case 'f':
case 'F':
lv = 0;
break;
default:
bad:
for (; w > 0; --w)
GET (ch);
/* no break */
case ',':
case '\n':
return errno = 116;
}
/* The switch statement that was here
didn't cut it: It broke down for targets
where sizeof(char) == sizeof(short). */
if (len == sizeof (char))
*(char *) n = (char) lv;
else if (len == sizeof (short))
*(short *) n = (short) lv;
else
*n = lv;
while (w-- > 0)
{
GET (ch);
if (ch == ',' || ch == '\n')
break;
}
return 0;
}
static int
rd_F (ufloat * p, int w, int d, ftnlen len)
{
char s[FMAX + EXPMAXDIGS + 4];
register int ch;
register char *sp, *spe, *sp1;
double x;
int scale1, se;
long e, exp;
sp1 = sp = s;
spe = sp + FMAX;
exp = -d;
x = 0.;
do
{
GET (ch);
w--;
}
while (ch == ' ' && w);
switch (ch)
{
case '-':
*sp++ = ch;
sp1++;
spe++;
case '+':
if (!w)
goto zero;
--w;
GET (ch);
}
while (ch == ' ')
{
blankdrop:
if (!w--)
goto zero;
GET (ch);
}
while (ch == '0')
{
if (!w--)
goto zero;
GET (ch);
}
if (ch == ' ' && f__cblank)
goto blankdrop;
scale1 = f__scale;
while (isdigit (ch))
{
digloop1:
if (sp < spe)
*sp++ = ch;
else
++exp;
digloop1e:
if (!w--)
goto done;
GET (ch);
}
if (ch == ' ')
{
if (f__cblank)
{
ch = '0';
goto digloop1;
}
goto digloop1e;
}
if (ch == '.')
{
exp += d;
if (!w--)
goto done;
GET (ch);
if (sp == sp1)
{ /* no digits yet */
while (ch == '0')
{
skip01:
--exp;
skip0:
if (!w--)
goto done;
GET (ch);
}
if (ch == ' ')
{
if (f__cblank)
goto skip01;
goto skip0;
}
}
while (isdigit (ch))
{
digloop2:
if (sp < spe)
{
*sp++ = ch;
--exp;
}
digloop2e:
if (!w--)
goto done;
GET (ch);
}
if (ch == ' ')
{
if (f__cblank)
{
ch = '0';
goto digloop2;
}
goto digloop2e;
}
}
switch (ch)
{
default:
break;
case '-':
se = 1;
goto signonly;
case '+':
se = 0;
goto signonly;
case 'e':
case 'E':
case 'd':
case 'D':
if (!w--)
goto bad;
GET (ch);
while (ch == ' ')
{
if (!w--)
goto bad;
GET (ch);
}
se = 0;
switch (ch)
{
case '-':
se = 1;
case '+':
signonly:
if (!w--)
goto bad;
GET (ch);
}
while (ch == ' ')
{
if (!w--)
goto bad;
GET (ch);
}
if (!isdigit (ch))
goto bad;
e = ch - '0';
for (;;)
{
if (!w--)
{
ch = '\n';
break;
}
GET (ch);
if (!isdigit (ch))
{
if (ch == ' ')
{
if (f__cblank)
ch = '0';
else
continue;
}
else
break;
}
e = 10 * e + ch - '0';
if (e > EXPMAX && sp > sp1)
goto bad;
}
if (se)
exp -= e;
else
exp += e;
scale1 = 0;
}
switch (ch)
{
case '\n':
case ',':
break;
default:
bad:
return (errno = 115);
}
done:
if (sp > sp1)
{
while (*--sp == '0')
++exp;
if (exp -= scale1)
sprintf (sp + 1, "e%ld", exp);
else
sp[1] = 0;
x = atof (s);
}
zero:
if (len == sizeof (real))
p->pf = x;
else
p->pd = x;
return (0);
}
static int
rd_A (char *p, ftnlen len)
{
int i, ch;
for (i = 0; i < len; i++)
{
GET (ch);
*p++ = VAL (ch);
}
return (0);
}
static int
rd_AW (char *p, int w, ftnlen len)
{
int i, ch;
if (w >= len)
{
for (i = 0; i < w - len; i++)
GET (ch);
for (i = 0; i < len; i++)
{
GET (ch);
*p++ = VAL (ch);
}
return (0);
}
for (i = 0; i < w; i++)
{
GET (ch);
*p++ = VAL (ch);
}
for (i = 0; i < len - w; i++)
*p++ = ' ';
return (0);
}
static int
rd_H (int n, char *s)
{
int i, ch;
for (i = 0; i < n; i++)
if ((ch = (*f__getn) ()) < 0)
return (ch);
else
*s++ = ch == '\n' ? ' ' : ch;
return (1);
}
static int
rd_POS (char *s)
{
char quote;
int ch;
quote = *s++;
for (; *s; s++)
if (*s == quote && *(s + 1) != quote)
break;
else if ((ch = (*f__getn) ()) < 0)
return (ch);
else
*s = ch == '\n' ? ' ' : ch;
return (1);
}
int
rd_ed (struct syl * p, char *ptr, ftnlen len)
{
int ch;
for (; f__cursor > 0; f__cursor--)
if ((ch = (*f__getn) ()) < 0)
return (ch);
if (f__cursor < 0)
{
if (f__recpos + f__cursor < 0) /*err(elist->cierr,110,"fmt") */
f__cursor = -f__recpos; /* is this in the standard? */
if (f__external == 0)
{
extern char *f__icptr;
f__icptr += f__cursor;
}
else if (f__curunit && f__curunit->useek)
FSEEK (f__cf, (off_t) f__cursor, SEEK_CUR);
else
err (f__elist->cierr, 106, "fmt");
f__recpos += f__cursor;
f__cursor = 0;
}
switch (p->op)
{
default:
fprintf (stderr, "rd_ed, unexpected code: %d\n", p->op);
sig_die (f__fmtbuf, 1);
case IM:
case I:
ch = rd_I ((Uint *) ptr, p->p1, len, 10);
break;
/* O and OM don't work right for character, double, complex, */
/* or doublecomplex, and they differ from Fortran 90 in */
/* showing a minus sign for negative values. */
case OM:
case O:
ch = rd_I ((Uint *) ptr, p->p1, len, 8);
break;
case L:
ch = rd_L ((ftnint *) ptr, p->p1, len);
break;
case A:
ch = rd_A (ptr, len);
break;
case AW:
ch = rd_AW (ptr, p->p1, len);
break;
case E:
case EE:
case D:
case G:
case GE:
case F:
ch = rd_F ((ufloat *) ptr, p->p1, p->p2.i[0], len);
break;
/* Z and ZM assume 8-bit bytes. */
case ZM:
case Z:
ch = rd_Z ((Uint *) ptr, p->p1, len);
break;
}
if (ch == 0)
return (ch);
else if (ch == EOF)
return (EOF);
if (f__cf)
clearerr (f__cf);
return (errno);
}
int
rd_ned (struct syl * p)
{
switch (p->op)
{
default:
fprintf (stderr, "rd_ned, unexpected code: %d\n", p->op);
sig_die (f__fmtbuf, 1);
case APOS:
return (rd_POS (p->p2.s));
case H:
return (rd_H (p->p1, p->p2.s));
case SLASH:
return ((*f__donewrec) ());
case TR:
case X:
f__cursor += p->p1;
return (1);
case T:
f__cursor = p->p1 - f__recpos - 1;
return (1);
case TL:
f__cursor -= p->p1;
if (f__cursor < -f__recpos) /* TL1000, 1X */
f__cursor = -f__recpos;
return (1);
}
}
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