freebsd-dev/contrib/libf2c/libI77/dfe.c
2003-07-11 03:42:19 +00:00

157 lines
2.7 KiB
C

#include "config.h"
#include "f2c.h"
#include "fio.h"
#include "fmt.h"
int
y_rsk (void)
{
if (f__curunit->uend || f__curunit->url <= f__recpos
|| f__curunit->url == 1)
return 0;
do
{
getc (f__cf);
}
while (++f__recpos < f__curunit->url);
return 0;
}
int
y_getc (void)
{
int ch;
if (f__curunit->uend)
return (-1);
if ((ch = getc (f__cf)) != EOF)
{
f__recpos++;
if (f__curunit->url >= f__recpos || f__curunit->url == 1)
return (ch);
else
return (' ');
}
if (feof (f__cf))
{
f__curunit->uend = 1;
errno = 0;
return (-1);
}
err (f__elist->cierr, errno, "readingd");
}
static int
y_rev (void)
{
if (f__recpos < f__hiwater)
f__recpos = f__hiwater;
if (f__curunit->url > 1)
while (f__recpos < f__curunit->url)
(*f__putn) (' ');
if (f__recpos)
f__putbuf (0);
f__recpos = 0;
return (0);
}
static int
y_err (void)
{
err (f__elist->cierr, 110, "dfe");
}
static int
y_newrec (void)
{
y_rev ();
f__hiwater = f__cursor = 0;
return (1);
}
int
c_dfe (cilist * a)
{
f__sequential = 0;
f__formatted = f__external = 1;
f__elist = a;
f__cursor = f__scale = f__recpos = 0;
f__curunit = &f__units[a->ciunit];
if (a->ciunit > MXUNIT || a->ciunit < 0)
err (a->cierr, 101, "startchk");
if (f__curunit->ufd == NULL && fk_open (DIR, FMT, a->ciunit))
err (a->cierr, 104, "dfe");
f__cf = f__curunit->ufd;
if (!f__curunit->ufmt)
err (a->cierr, 102, "dfe");
if (!f__curunit->useek)
err (a->cierr, 104, "dfe");
f__fmtbuf = a->cifmt;
if (a->cirec <= 0)
err (a->cierr, 130, "dfe");
FSEEK (f__cf, (off_t) f__curunit->url * (a->cirec - 1), SEEK_SET);
f__curunit->uend = 0;
return (0);
}
integer
s_rdfe (cilist * a)
{
int n;
if (f__init != 1)
f_init ();
f__init = 3;
f__reading = 1;
if ((n = c_dfe (a)))
return (n);
if (f__curunit->uwrt && f__nowreading (f__curunit))
err (a->cierr, errno, "read start");
f__getn = y_getc;
f__doed = rd_ed;
f__doned = rd_ned;
f__dorevert = f__donewrec = y_err;
f__doend = y_rsk;
if (pars_f (f__fmtbuf) < 0)
err (a->cierr, 100, "read start");
fmt_bg ();
return (0);
}
integer
s_wdfe (cilist * a)
{
int n;
if (f__init != 1)
f_init ();
f__init = 3;
f__reading = 0;
if ((n = c_dfe (a)))
return (n);
if (f__curunit->uwrt != 1 && f__nowwriting (f__curunit))
err (a->cierr, errno, "startwrt");
f__putn = x_putc;
f__doed = w_ed;
f__doned = w_ned;
f__dorevert = y_err;
f__donewrec = y_newrec;
f__doend = y_rev;
if (pars_f (f__fmtbuf) < 0)
err (a->cierr, 100, "startwrt");
fmt_bg ();
return (0);
}
integer
e_rdfe (void)
{
f__init = 1;
en_fio ();
return (0);
}
integer
e_wdfe (void)
{
f__init = 1;
return en_fio ();
}