int s_rdfe64_mp(cilist64 *a, unit **fu) {
#else
int
s_rdfe_mp (cilist *a, unit **fu) {
#endif
int n;
unit *ftnunit;
if (!f77init)
f_init ();
if (n = c_dfe (a, fu)) {
if (*fu) (*fu)->lock_unit = 0;
return (n);
}
ftnunit = *fu;
if (ftnunit->uwrt & WR_OP)
(void) f77nowreading (ftnunit);
#ifdef I90
if (ftnunit->uaction == WRITEONLY )
errret(ftnunit->f77errlist.cierr,180,"startread");
#endif
ftnunit->f77getn = y_getc;
ftnunit->f77gets = y_gets;
ftnunit->f77ungetn = y_ungetc;
ftnunit->f77doed = rd_ed;
ftnunit->f77doned = rd_ned;
ftnunit->f77donewrec = yrd_SL;
ftnunit->f77dorevert = ftnunit->f77doend = y_rsk;
if (pars_f (ftnunit, ftnunit->f77fmtbuf) < 0)
errret(a->cierr, 100, "startio");
fmt_bg (ftnunit);
return (0);
}
static int
s_rsue_com (cilist64 *a, unit **fu)
{
int n;
unit *ftnunit;
int f77reclen_32bit;
if (!f77init)
f_init ();
n = c_sue (a, fu);
ftnunit = *fu;
if (n) {
if (n > 0) {
errret(a->cierr, n, "s_rsue");
} else {
errret(a->ciend, n, "s_rsue");
}
}
ftnunit->f77recpos = ftnunit->f77reclen = 0;
#ifdef I90
if (ftnunit->uaction == WRITEONLY )
errret(ftnunit->f77errlist.cierr,180,"startread");
#endif
/*
* The direct unformatted case, yup, in the sequential unformatted
* file.
*/
if ((ftnunit->uacc == DIRECT) && (ftnunit->ufmt == 0)) {
if (ftnunit->url != 1) {
ftnunit->f77do_unf = do_ud;
ftnunit->f77reclen = ftnunit->url;
} else {
/* For 'SYSTEM' file set a very large MAX_INT value for record
length so it cannot be exceeded
*/
#if (_MIPS_SIM == _MIPS_SIM_ABI64)
ftnunit->f77reclen = LONGLONG_MAX;
#else
ftnunit->f77reclen = LONG_MAX;
#endif
ftnunit->f77do_unf = do_ud;
}
_fio_seq_pos( ftnunit->ufd, ftnunit );
ftnunit->uwrt &= ~WR_OP;
return (0);
} else {
if (ftnunit->uwrt & WR_OP)
(void) f77nowreading (ftnunit);
}
/* The normal case. */
if (ftnunit->uacc == KEYED) {
ftnunit->f77do_unf = do_ui;
ftnunit->f77idxlist.cimatch = a->cimatch;
ftnunit->f77idxlist.cikeytype = a->cikeytype;
ftnunit->f77idxlist.cikeyval.cicharval = a->cikeyval.cicharval;
ftnunit->f77idxlist.cikeyid = a->cikeyid;
ftnunit->f77idxlist.cinml = a->cinml;
ftnunit->f77idxlist.cikeyvallen = a->cikeyvallen;
if (n = idxread(ftnunit)) {
if (n > 0) {
errret(a->cierr, n, "s_rsue");
} else {
errret(a->ciend, n, "s_rsue");
}
}
} else if (ftnunit->url != 1) {
ftnunit->f77do_unf = do_us;
if (ftnunit->uerror)
unf_position (ftnunit->ufd, ftnunit);
if (fread ((char *) &f77reclen_32bit, sizeof (int), 1, ftnunit->ufd) != 1) {
if (feof (ftnunit->ufd)) {
ftnunit->uend = 1;
errret(a->ciend, EOF, "start");
}
clearerr(ftnunit->ufd);
errret(a->cierr, errno, "start");
}
ftnunit->f77reclen = f77reclen_32bit;
} else {
ftnunit->f77reclen = INT_MAX;
ftnunit->f77do_unf = do_ud;
}
return (0);
}
static ftnint
__f77_f_back_com (alist *a, int lock)
{
unit *ftnunit;
int n, i;
ftnll x, y;
char buf[512];
if ((ftnunit = find_luno (a->aunit)) == NULL)
err(a->aerr, 114, "backspace");
while (lock && test_and_set( &ftnunit->lock_unit, 1L ))
;
if (ftnunit->uacc == APPEND || ftnunit->uacc == KEYED)
errret(a->aerr, 165, "backspace");
if (ftnunit->useek == 0 || ftnunit->url == 1)
errret(a->aerr, 106, "backspace");
if (ftnunit->uend == 1) {
ftnunit->uend = 0;
ftnunit->lock_unit = 0;
return (0);
}
if (ftnunit->uwrt & WR_OP) {
#ifdef I90
/* If in Fortran-90 nonadvancing mode, write endfile record (\n only). */
if (ftnunit->f90sw == 1 && ftnunit->f90nadv == 1 ) {
putc ('\n', ftnunit->ufd);
ftnunit->f90nadv = 0;
}
#endif
/* Just completed a write operation, a backspace would force
the truncation of the file at the current position.
*/
(void) t_runc (ftnunit, a->aerr);
/* make sure it gets switched back to reading mode so the
file won't get truncated again if it gets backspace/rewind again
*/
if (f77nowreading(ftnunit))
errret(a->aerr, 106, "backspace");
}
/* Backspace a direct unformatted file. */
if ((ftnunit->uacc == DIRECT) && (ftnunit->ufmt == 0)) {
if (ftnunit->uirec != 0)
ftnunit->uirec--;
ftnunit->lock_unit = 0;
return (0);
}
if (ftnunit->ufmt != 1) {
if (ftnunit->uerror)
unf_position (ftnunit->ufd, ftnunit);
if (fseek (ftnunit->ufd, -(long) sizeof (int), 1)) {
fseek(ftnunit->ufd, 0L, 0);
ftnunit->lock_unit = 0;
return(0);
}
/* NEED TO CHANGE HERE DLAI */
(void) fread ((char *) &n, sizeof (int), 1, ftnunit->ufd);
(void) fseek (ftnunit->ufd, (long) (-n - 2 * sizeof (int)), 1);
ftnunit->lock_unit = 0;
return (0);
}
y = x = FTELL (ftnunit->ufd) - 1; /* skip the last CR */
/* If already at the beginning of file, ignore the backspace */
if (x < 0) {
ftnunit->lock_unit = 0;
return (0);
}
#ifdef I90
/* Make sure these variables are zeroed out to allow record to be reread. */
ftnunit->f77recpos = 0;
ftnunit->f77recend = 0;
#endif
for (;;) {
if (x < sizeof (buf))
x = 0;
else
x -= sizeof (buf);
(void) FSEEK (ftnunit->ufd, x, 0);
/* n should be ll for 64 bit records */
n = (int) fread (buf, 1, (int) (y - x), ftnunit->ufd);
for (i = n - 1; i >= 0; i--) {
if (buf[i] != '\n')
continue;
(void) fseek (ftnunit->ufd, (long) (i + 1 - n), 1);
ftnunit->lock_unit = 0;
return (0);
}
if (x == 0) {
(void) fseek (ftnunit->ufd, 0L, 0);
ftnunit->lock_unit = 0;
return (0);
} else if (n <= 0)
errret (a->aerr, (EOF), "backspace")
(void) FSEEK (ftnunit->ufd, x, 0);
y = x;
}
}
static int
f_rew_com (alist *a, int lock)
{
unit *ftnunit;
if ((ftnunit = find_luno (a->aunit)) == NULL)
return(0);
while (lock && test_and_set( &ftnunit->lock_unit, 1L ))
;
if (ftnunit->uacc == KEYED)
errret(a->aerr, 164, "rewind");
if (ftnunit->uconn <= 0) {
ftnunit->lock_unit = 0;
return (0);
}
if (!ftnunit->useek && !ftnunit->uistty)
errret(a->aerr, 106, "rewind");
ftnunit->uend = 0;
/* Need to reset the associate variable to 1 if exists */
if (ftnunit->uassocv)
set_var (ftnunit->uassocv, ftnunit->umask, ASSOCV, (ftnll) 1);
/* Rewind of a direct unformatted file. */
if ((ftnunit->uacc == DIRECT) && (ftnunit->ufmt == 0)) {
if (-1 == lseek ((int) ftnunit->ufd, 0, SEEK_SET)) {
errret(a->aerr, 106, "rewind");
}
/* need to change the internal buffer position in fio_direct_io as well */
_fio_set_seek((int) ftnunit->ufd, (ftnll) 0, 0);
ftnunit->uirec = 0;
ftnunit->lock_unit = 0;
return (1);
}
#ifdef I90
/* Make sure these variables are zeroed out to allow record to be reread. */
ftnunit->f77recpos = 0;
ftnunit->f77recend = 0;
#endif
if (f77vms_flag_[VMS_EF]) { /* rewind to the last endfile record
* or beginning of file */
char buf[513];
XINT64 y, x;
int i, n;
char ch;
/* If last operation was a WRITE, truncate the file and then make
sure that the file mode is switched to READ so the the next
REWIND/BACKSPACE won't truncate the file again
*/
if (ftnunit->uwrt & WR_OP) {
#ifdef I90
/* If in Fortran-90 nonadvancing mode, write endfile record (\n only). */
if (ftnunit->f90sw == 1 && ftnunit->f90nadv == 1 ) {
putc ('\n', ftnunit->ufd);
ftnunit->f90nadv = 0;
}
#endif
(void) t_runc (ftnunit, a->aerr);
/* If the file is in write-only mode make sure that it is readable */
if (f77nowreading(ftnunit))
errret(a->aerr, 106, "rewind");
}
if (ftnunit->ufmt != 1) {
if (ftell (ftnunit->ufd) == 0) {
ftnunit->lock_unit = 0;
return (0); /* already at beginning of file */
}
if (fseek (ftnunit->ufd, (long) (-sizeof (int)), 1) < 0)
errret(a->aerr, 106, "rewind");
for (i = 0;; i++) {
(void) fread ((char *) &n, sizeof (int), 1, ftnunit->ufd);
if (n != 1 || i == 0) {
if (fseek (ftnunit->ufd, (long) (-n - 3 * sizeof (int)), 1)) {
rewind (ftnunit->ufd);
ftnunit->lock_unit = 0;
return (0);
}
} else {
if (fseek (ftnunit->ufd, -(sizeof (int) + 1), 1)) {
rewind (ftnunit->ufd);
ftnunit->lock_unit = 0;
return (0);
}
(void) fread ((char *) &ch, 1, 1, ftnunit->ufd);
if (ch == '\032') {
fseek (ftnunit->ufd, sizeof (int), 1);
ftnunit->lock_unit = 0;
return (0);
}
fseek (ftnunit->ufd, -(2 * sizeof (int) + 1), 1);
}
}
}
y = x = FTELL (ftnunit->ufd) - 2; /* skip the last endfile
* record */
if (y < 0) {
(void) fseek(ftnunit->ufd, 0L, 0);
ftnunit->lock_unit = 0;
return(0);
}
ch = '\0';
for (;;) {
if (x < sizeof (buf) - 1)
x = 0;
else
x -= sizeof (buf) - 1;
(void) FSEEK (ftnunit->ufd, x, 0);
n = (int) fread (buf, 1, (int) (y - x), ftnunit->ufd);
buf[n] = ch;
for (i = n - 1; i >= 1; i--) {
if (buf[i] != '\032' || buf[i + 1] != '\n')
continue;
(void) fseek (ftnunit->ufd, (long) (i + 2 - n), 1);
ftnunit->lock_unit = 0;
return (0);
}
if (x == 0) {
(void) fseek (ftnunit->ufd, 0L, 0);
ftnunit->lock_unit = 0;
return (0);
}
y = x;
ch = buf[0];
}
}
/* If last operation was a WRITE, truncate the file and then make
sure that the file mode is switched to READ so the the next
REWIND/BACKSPACE won't truncate the file again
*/
if (ftnunit->uwrt & WR_OP) {
#ifdef I90
/* If in Fortran-90 nonadvancing mode, write endfile record (\n only). */
if (ftnunit->f90sw == 1 && ftnunit->f90nadv == 1 ) {
putc ('\n', ftnunit->ufd);
ftnunit->f90nadv = 0;
}
#endif
(void) t_runc (ftnunit, a->aerr);
/* If the file is in write-only mode make sure that it is readable */
if (f77nowreading(ftnunit))
errret(a->aerr, 106, "backspace");
}
rewind (ftnunit->ufd);
ftnunit->lock_unit = 0;
return (0);
}
int s_rsfe_com (cilist *a, unit **fu)
#endif
{
int n;
unit *ftnunit;
if (!f77init)
f_init ();
if (n = c_sfe (a, fu))
return (n);
ftnunit = *fu;
/* Fix BN 9768.
* If user tries to read from stdout then cause startio to abort with an
* error. This is particularly importrant if a user is tries to read from
* fortran unit 6 , which by default is connected to stdout. Even though
* the standard says nothing about the way unit 5 and unit 6 should be
* handled, I generally think that it is a good idea to distinguish
* between these and not allow users to read from stdout.
* ---ravi---1/7/92
*/
/* Fix 12308: Read error from stdout should occur for only files
* connected to terminal. The change is taken from the 'fix'
* section of the bug description - Bhaskar 08/14/92 */
if (ftnunit->ufd == stdout && isatty (fileno (ftnunit->ufd)))
errret(a->cierr, 173, "startio");
ftnunit->f77errlist.cierr = a->cierr;
ftnunit->f77errlist.ciend = a->ciend;
ftnunit->f77errlist.cieor = a->cieor;
ftnunit->f77errlist.cisize = a->cisize;
ftnunit->f77errlist.iciunit = 0;
ftnunit->f77scale = 0;
ftnunit->f77fmtbuf = a->cifmt;
if (ftnunit->uacc == KEYED) {
ftnunit->f77idxlist.cimatch = a->cimatch;
ftnunit->f77idxlist.cikeytype = a->cikeytype;
ftnunit->f77idxlist.cikeyval.cicharval = a->cikeyval.cicharval;
ftnunit->f77idxlist.cikeyid = a->cikeyid;
ftnunit->f77idxlist.cinml = a->cinml;
ftnunit->f77idxlist.cikeyvallen = a->cikeyvallen;
}
else {
if (ftnunit->uacc == DIRECT)
errret(a->cierr, 171, "sequential read");
if (ftnunit->ualias->ucc == CC_FORTRAN &&
ftnunit->ualias->ucchar) {
putc (ftnunit->ualias->ucchar, ftnunit->ualias->ufd);
ftnunit->ualias->ucchar = '\0';
} else if (ftnunit->ucc == CC_FORTRAN && ftnunit->ucchar) {
putc (ftnunit->ucchar, ftnunit->ufd);
ftnunit->ucchar = '\0';
}
}
#ifdef I90
ftnunit->f90sw = 0;
ftnunit->f90nadv = 0;
#endif
if (pars_f (ftnunit, ftnunit->f77fmtbuf) < 0)
errret(a->cierr, 100, "startio");
ftnunit->f77getn = x_getc;
ftnunit->f77gets = x_gets;
ftnunit->f77ungetn = x_ungetc;
ftnunit->f77doed = rd_ed;
ftnunit->f77doned = rd_ned;
fmt_bg (ftnunit);
ftnunit->f77doend = x_endp;
ftnunit->f77donewrec = xrd_SL;
ftnunit->f77dorevert = x_rev;
ftnunit->f77cblank = ftnunit->ublnk;
ftnunit->f77cplus = 0;
if (ftnunit->ufd == stdin && feof (ftnunit->ufd) && f77vms_flag_[VMS_IN])
clearerr(ftnunit->ufd);
(void) f77nowreading (ftnunit);
check_buflen( ftnunit, ftnunit->url > FIO_ALLOC ? ftnunit->url : FIO_ALLOC );
#ifdef I90
if (ftnunit->uaction == WRITEONLY )
errret(ftnunit->f77errlist.cierr,180,"startread");
ftnunit->f77recpos = 0;
ftnunit->f77recend = 0;
#endif
n = xrd_SL (ftnunit);
if (n > 0) {
errret(a->cierr, n, "s_rsfe");
} else if (n < 0) {
errret(a->ciend, n, "s_rsfe");
} else
return(0);
}
