-/* Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008
+/* Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
Free Software Foundation, Inc.
Contributed by Andy Vaught
Namelist transfer functions contributed by Paul Thomas
Libgfortran is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
-In addition to the permissions in the GNU General Public License, the
-Free Software Foundation gives you unlimited permission to link the
-compiled version of this file into combinations with other programs,
-and to distribute those combinations without any restriction coming
-from the use of this file. (The General Public License restrictions
-do apply in other respects; for example, they cover modification of
-the file, and distribution when not linked into a combine
-executable.)
-
Libgfortran is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with Libgfortran; see the file COPYING. If not, write to
-the Free Software Foundation, 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA. */
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
/* transfer.c -- Top level handling of data transfer statements. */
#include "io.h"
+#include "fbuf.h"
+#include "format.h"
+#include "unix.h"
#include <string.h>
#include <assert.h>
#include <stdlib.h>
+#include <errno.h>
/* Calling conventions: Data transfer statements are unlike other
transfer_integer
transfer_logical
transfer_character
+ transfer_character_wide
transfer_real
transfer_complex
extern void transfer_character (st_parameter_dt *, void *, int);
export_proto(transfer_character);
+extern void transfer_character_wide (st_parameter_dt *, void *, int, int);
+export_proto(transfer_character_wide);
+
extern void transfer_complex (st_parameter_dt *, void *, int);
export_proto(transfer_complex);
{NULL, 0}
};
+static const st_option round_opt[] = {
+ {"up", ROUND_UP},
+ {"down", ROUND_DOWN},
+ {"zero", ROUND_ZERO},
+ {"nearest", ROUND_NEAREST},
+ {"compatible", ROUND_COMPATIBLE},
+ {"processor_defined", ROUND_PROCDEFINED},
+ {NULL, 0}
+};
+
static const st_option sign_opt[] = {
{"plus", SIGN_SP},
heap. Hopefully this won't happen very often. */
char *
-read_sf (st_parameter_dt *dtp, int *length, int no_error)
+read_sf (st_parameter_dt *dtp, int * length, int no_error)
{
+ static char *empty_string[0];
char *base, *p, q;
- int n, crlf;
- gfc_offset pos;
- size_t readlen;
+ int n, lorig, memread, seen_comma;
- if (*length > SCRATCH_SIZE)
- dtp->u.p.line_buffer = get_mem (*length);
- p = base = dtp->u.p.line_buffer;
+ /* If we hit EOF previously with the no_error flag set (i.e. X, T,
+ TR edit descriptors), and we now try to read again, this time
+ without setting no_error. */
+ if (!no_error && dtp->u.p.at_eof)
+ {
+ *length = 0;
+ hit_eof (dtp);
+ return NULL;
+ }
/* If we have seen an eor previously, return a length of 0. The
caller is responsible for correctly padding the input field. */
if (dtp->u.p.sf_seen_eor)
{
*length = 0;
- return base;
+ /* Just return something that isn't a NULL pointer, otherwise the
+ caller thinks an error occured. */
+ return (char*) empty_string;
}
if (is_internal_unit (dtp))
{
- readlen = *length;
- if (sread (dtp->u.p.current_unit->s, p, &readlen) != 0 || readlen < (size_t) *length)
+ memread = *length;
+ base = mem_alloc_r (dtp->u.p.current_unit->s, length);
+ if (unlikely (memread > *length))
{
- generate_error (&dtp->common, LIBERROR_END, NULL);
+ hit_eof (dtp);
return NULL;
}
-
+ n = *length;
goto done;
}
- readlen = 1;
- n = 0;
+ n = seen_comma = 0;
- do
- {
- if (sread (dtp->u.p.current_unit->s, &q, &readlen) != 0)
- {
- generate_error (&dtp->common, LIBERROR_END, NULL);
- return NULL;
- }
+ /* Read data into format buffer and scan through it. */
+ lorig = *length;
+ base = p = fbuf_read (dtp->u.p.current_unit, length);
+ if (base == NULL)
+ return NULL;
- /* If we have a line without a terminating \n, drop through to
- EOR below. */
- if (readlen < 1 && n == 0)
- {
- if (no_error)
- break;
- generate_error (&dtp->common, LIBERROR_END, NULL);
- return NULL;
- }
+ while (n < *length)
+ {
+ q = *p;
- if (readlen < 1 || q == '\n' || q == '\r')
+ if (q == '\n' || q == '\r')
{
- /* Unexpected end of line. */
+ /* Unexpected end of line. Set the position. */
+ fbuf_seek (dtp->u.p.current_unit, n + 1 ,SEEK_CUR);
+ dtp->u.p.sf_seen_eor = 1;
/* If we see an EOR during non-advancing I/O, we need to skip
the rest of the I/O statement. Set the corresponding flag. */
if (dtp->u.p.advance_status == ADVANCE_NO || dtp->u.p.seen_dollar)
dtp->u.p.eor_condition = 1;
-
- crlf = 0;
+
/* If we encounter a CR, it might be a CRLF. */
if (q == '\r') /* Probably a CRLF */
{
- readlen = 1;
- pos = stream_offset (dtp->u.p.current_unit->s);
- if (sread (dtp->u.p.current_unit->s, &q, &readlen) != 0)
+ /* See if there is an LF. Use fbuf_read rather then fbuf_getc so
+ the position is not advanced unless it really is an LF. */
+ int readlen = 1;
+ p = fbuf_read (dtp->u.p.current_unit, &readlen);
+ if (*p == '\n' && readlen == 1)
{
- generate_error (&dtp->common, LIBERROR_END, NULL);
- return NULL;
+ dtp->u.p.sf_seen_eor = 2;
+ fbuf_seek (dtp->u.p.current_unit, 1 ,SEEK_CUR);
}
- if (q != '\n' && readlen == 1) /* Not a CRLF after all. */
- sseek (dtp->u.p.current_unit->s, pos);
- else
- crlf = 1;
}
/* Without padding, terminate the I/O statement without assigning
the value. With padding, the value still needs to be assigned,
so we can just continue with a short read. */
- if (dtp->u.p.pad_status == PAD_NO)
+ if (dtp->u.p.current_unit->pad_status == PAD_NO)
{
- if (no_error)
+ if (likely (no_error))
break;
generate_error (&dtp->common, LIBERROR_EOR, NULL);
return NULL;
}
*length = n;
- dtp->u.p.sf_seen_eor = (crlf ? 2 : 1);
- break;
+ goto done;
}
/* Short circuit the read if a comma is found during numeric input.
The flag is set to zero during character reads so that commas in
if (q == ',')
if (dtp->u.p.sf_read_comma == 1)
{
+ seen_comma = 1;
notify_std (&dtp->common, GFC_STD_GNU,
"Comma in formatted numeric read.");
*length = n;
break;
}
-
n++;
- *p++ = q;
- dtp->u.p.sf_seen_eor = 0;
+ p++;
+ }
+
+ fbuf_seek (dtp->u.p.current_unit, n + seen_comma, SEEK_CUR);
+
+ /* A short read implies we hit EOF, unless we hit EOR, a comma, or
+ some other stuff. Set the relevant flags. */
+ if (lorig > *length && !dtp->u.p.sf_seen_eor && !seen_comma)
+ {
+ if (n > 0 || no_error)
+ {
+ if (dtp->u.p.advance_status == ADVANCE_NO)
+ {
+ if (dtp->u.p.current_unit->pad_status == PAD_NO)
+ {
+ hit_eof (dtp);
+ return NULL;
+ }
+ else
+ dtp->u.p.eor_condition = 1;
+ }
+ else
+ dtp->u.p.at_eof = 1;
+ }
+ else
+ {
+ hit_eof (dtp);
+ return NULL;
+ }
}
- while (n < *length);
done:
- dtp->u.p.current_unit->bytes_left -= *length;
+
+ dtp->u.p.current_unit->bytes_left -= n;
if ((dtp->common.flags & IOPARM_DT_HAS_SIZE) != 0)
- dtp->u.p.size_used += (gfc_offset) *length;
+ dtp->u.p.size_used += (GFC_IO_INT) n;
return base;
}
opened with PAD=YES. The caller must assume tailing spaces for
short reads. */
-try
-read_block_form (st_parameter_dt *dtp, void *buf, size_t *nbytes)
+void *
+read_block_form (st_parameter_dt *dtp, int * nbytes)
{
char *source;
- size_t nread;
- int nb;
+ int norig;
if (!is_stream_io (dtp))
{
to unit record length and proceed, otherwise error. */
if (dtp->u.p.current_unit->unit_number == options.stdin_unit
&& dtp->u.p.current_unit->recl == DEFAULT_RECL)
- dtp->u.p.current_unit->bytes_left = dtp->u.p.current_unit->recl;
+ dtp->u.p.current_unit->bytes_left = dtp->u.p.current_unit->recl;
else
{
- if (dtp->u.p.pad_status == PAD_NO)
+ if (unlikely (dtp->u.p.current_unit->pad_status == PAD_NO))
{
/* Not enough data left. */
generate_error (&dtp->common, LIBERROR_EOR, NULL);
- return FAILURE;
+ return NULL;
}
}
- if (dtp->u.p.current_unit->bytes_left == 0)
+ if (unlikely (dtp->u.p.current_unit->bytes_left == 0))
{
- dtp->u.p.current_unit->endfile = AT_ENDFILE;
- generate_error (&dtp->common, LIBERROR_END, NULL);
- return FAILURE;
+ hit_eof (dtp);
+ return NULL;
}
*nbytes = dtp->u.p.current_unit->bytes_left;
(dtp->u.p.current_unit->flags.access == ACCESS_SEQUENTIAL ||
dtp->u.p.current_unit->flags.access == ACCESS_STREAM))
{
- nb = *nbytes;
- source = read_sf (dtp, &nb, 0);
- *nbytes = nb;
+ source = read_sf (dtp, nbytes, 0);
dtp->u.p.current_unit->strm_pos +=
(gfc_offset) (*nbytes + dtp->u.p.sf_seen_eor);
- if (source == NULL)
- return FAILURE;
- memcpy (buf, source, *nbytes);
- return SUCCESS;
+ return source;
}
+
+ /* If we reach here, we can assume it's direct access. */
+
dtp->u.p.current_unit->bytes_left -= (gfc_offset) *nbytes;
- nread = *nbytes;
- if (sread (dtp->u.p.current_unit->s, buf, &nread) != 0)
- {
- generate_error (&dtp->common, LIBERROR_OS, NULL);
- return FAILURE;
- }
+ norig = *nbytes;
+ source = fbuf_read (dtp->u.p.current_unit, nbytes);
+ fbuf_seek (dtp->u.p.current_unit, *nbytes, SEEK_CUR);
if ((dtp->common.flags & IOPARM_DT_HAS_SIZE) != 0)
- dtp->u.p.size_used += (gfc_offset) nread;
+ dtp->u.p.size_used += (GFC_IO_INT) *nbytes;
- if (nread != *nbytes)
- { /* Short read, this shouldn't happen. */
- if (dtp->u.p.pad_status == PAD_YES)
- *nbytes = nread;
- else
+ if (norig != *nbytes)
+ {
+ /* Short read, this shouldn't happen. */
+ if (!dtp->u.p.current_unit->pad_status == PAD_YES)
{
generate_error (&dtp->common, LIBERROR_EOR, NULL);
source = NULL;
}
}
- dtp->u.p.current_unit->strm_pos += (gfc_offset) nread;
+ dtp->u.p.current_unit->strm_pos += (gfc_offset) *nbytes;
- return SUCCESS;
+ return source;
}
unformatted files. */
static void
-read_block_direct (st_parameter_dt *dtp, void *buf, size_t *nbytes)
+read_block_direct (st_parameter_dt *dtp, void *buf, size_t nbytes)
{
- size_t to_read_record;
- size_t have_read_record;
- size_t to_read_subrecord;
- size_t have_read_subrecord;
+ ssize_t to_read_record;
+ ssize_t have_read_record;
+ ssize_t to_read_subrecord;
+ ssize_t have_read_subrecord;
int short_record;
if (is_stream_io (dtp))
{
- to_read_record = *nbytes;
- have_read_record = to_read_record;
- if (sread (dtp->u.p.current_unit->s, buf, &have_read_record) != 0)
+ have_read_record = sread (dtp->u.p.current_unit->s, buf,
+ nbytes);
+ if (unlikely (have_read_record < 0))
{
generate_error (&dtp->common, LIBERROR_OS, NULL);
return;
dtp->u.p.current_unit->strm_pos += (gfc_offset) have_read_record;
- if (to_read_record != have_read_record)
+ if (unlikely ((ssize_t) nbytes != have_read_record))
{
/* Short read, e.g. if we hit EOF. For stream files,
we have to set the end-of-file condition. */
- generate_error (&dtp->common, LIBERROR_END, NULL);
- return;
+ hit_eof (dtp);
}
return;
}
if (dtp->u.p.current_unit->flags.access == ACCESS_DIRECT)
{
- if (dtp->u.p.current_unit->bytes_left < (gfc_offset) *nbytes)
+ if (dtp->u.p.current_unit->bytes_left < (gfc_offset) nbytes)
{
short_record = 1;
- to_read_record = (size_t) dtp->u.p.current_unit->bytes_left;
- *nbytes = to_read_record;
+ to_read_record = dtp->u.p.current_unit->bytes_left;
+ nbytes = to_read_record;
}
-
else
{
short_record = 0;
- to_read_record = *nbytes;
+ to_read_record = nbytes;
}
dtp->u.p.current_unit->bytes_left -= to_read_record;
- if (sread (dtp->u.p.current_unit->s, buf, &to_read_record) != 0)
+ to_read_record = sread (dtp->u.p.current_unit->s, buf, to_read_record);
+ if (unlikely (to_read_record < 0))
{
generate_error (&dtp->common, LIBERROR_OS, NULL);
return;
}
- if (to_read_record != *nbytes)
+ if (to_read_record != (ssize_t) nbytes)
{
/* Short read, e.g. if we hit EOF. Apparently, we read
more than was written to the last record. */
- *nbytes = to_read_record;
return;
}
- if (short_record)
+ if (unlikely (short_record))
{
generate_error (&dtp->common, LIBERROR_SHORT_RECORD, NULL);
- return;
}
return;
}
until the request has been fulfilled or the record has run out
of continuation subrecords. */
- if (dtp->u.p.current_unit->endfile == AT_ENDFILE)
- {
- generate_error (&dtp->common, LIBERROR_END, NULL);
- return;
- }
-
/* Check whether we exceed the total record length. */
if (dtp->u.p.current_unit->flags.has_recl
- && (*nbytes > (size_t) dtp->u.p.current_unit->bytes_left))
+ && ((gfc_offset) nbytes > dtp->u.p.current_unit->bytes_left))
{
- to_read_record = (size_t) dtp->u.p.current_unit->bytes_left;
+ to_read_record = dtp->u.p.current_unit->bytes_left;
short_record = 1;
}
else
{
- to_read_record = *nbytes;
+ to_read_record = nbytes;
short_record = 0;
}
have_read_record = 0;
if (dtp->u.p.current_unit->bytes_left_subrecord
< (gfc_offset) to_read_record)
{
- to_read_subrecord = (size_t) dtp->u.p.current_unit->bytes_left_subrecord;
+ to_read_subrecord = dtp->u.p.current_unit->bytes_left_subrecord;
to_read_record -= to_read_subrecord;
}
else
dtp->u.p.current_unit->bytes_left_subrecord -= to_read_subrecord;
- have_read_subrecord = to_read_subrecord;
- if (sread (dtp->u.p.current_unit->s, buf + have_read_record,
- &have_read_subrecord) != 0)
+ have_read_subrecord = sread (dtp->u.p.current_unit->s,
+ buf + have_read_record, to_read_subrecord);
+ if (unlikely (have_read_subrecord) < 0)
{
generate_error (&dtp->common, LIBERROR_OS, NULL);
return;
have_read_record += have_read_subrecord;
- if (to_read_subrecord != have_read_subrecord)
+ if (unlikely (to_read_subrecord != have_read_subrecord))
{
/* Short read, e.g. if we hit EOF. This means the record
structure has been corrupted, or the trailing record
marker would still be present. */
- *nbytes = have_read_record;
generate_error (&dtp->common, LIBERROR_CORRUPT_FILE, NULL);
return;
}
if (to_read_record > 0)
{
- if (dtp->u.p.current_unit->continued)
+ if (likely (dtp->u.p.current_unit->continued))
{
next_record_r_unf (dtp, 0);
us_read (dtp, 1);
}
dtp->u.p.current_unit->bytes_left -= have_read_record;
- if (short_record)
+ if (unlikely (short_record))
{
generate_error (&dtp->common, LIBERROR_SHORT_RECORD, NULL);
return;
{
/* For preconnected units with default record length, set bytes left
to unit record length and proceed, otherwise error. */
- if ((dtp->u.p.current_unit->unit_number == options.stdout_unit
- || dtp->u.p.current_unit->unit_number == options.stderr_unit)
- && dtp->u.p.current_unit->recl == DEFAULT_RECL)
+ if (likely ((dtp->u.p.current_unit->unit_number
+ == options.stdout_unit
+ || dtp->u.p.current_unit->unit_number
+ == options.stderr_unit)
+ && dtp->u.p.current_unit->recl == DEFAULT_RECL))
dtp->u.p.current_unit->bytes_left = dtp->u.p.current_unit->recl;
else
{
if (is_internal_unit (dtp))
{
- dest = salloc_w (dtp->u.p.current_unit->s, &length);
+ dest = mem_alloc_w (dtp->u.p.current_unit->s, &length);
if (dest == NULL)
{
return NULL;
}
- if (dtp->u.p.current_unit->endfile == AT_ENDFILE)
+ if (unlikely (dtp->u.p.current_unit->endfile == AT_ENDFILE))
generate_error (&dtp->common, LIBERROR_END, NULL);
}
else
}
if ((dtp->common.flags & IOPARM_DT_HAS_SIZE) != 0)
- dtp->u.p.size_used += (gfc_offset) length;
+ dtp->u.p.size_used += (GFC_IO_INT) length;
dtp->u.p.current_unit->strm_pos += (gfc_offset) length;
write_buf (st_parameter_dt *dtp, void *buf, size_t nbytes)
{
- size_t have_written, to_write_subrecord;
+ ssize_t have_written;
+ ssize_t to_write_subrecord;
int short_record;
/* Stream I/O. */
if (is_stream_io (dtp))
{
- if (swrite (dtp->u.p.current_unit->s, buf, &nbytes) != 0)
+ have_written = swrite (dtp->u.p.current_unit->s, buf, nbytes);
+ if (unlikely (have_written < 0))
{
generate_error (&dtp->common, LIBERROR_OS, NULL);
return FAILURE;
}
- dtp->u.p.current_unit->strm_pos += (gfc_offset) nbytes;
+ dtp->u.p.current_unit->strm_pos += (gfc_offset) have_written;
return SUCCESS;
}
if (dtp->u.p.current_unit->flags.access == ACCESS_DIRECT)
{
- if (dtp->u.p.current_unit->bytes_left < (gfc_offset) nbytes)
+ if (unlikely (dtp->u.p.current_unit->bytes_left < (gfc_offset) nbytes))
{
generate_error (&dtp->common, LIBERROR_DIRECT_EOR, NULL);
return FAILURE;
if (buf == NULL && nbytes == 0)
return SUCCESS;
- if (swrite (dtp->u.p.current_unit->s, buf, &nbytes) != 0)
+ have_written = swrite (dtp->u.p.current_unit->s, buf, nbytes);
+ if (unlikely (have_written < 0))
{
generate_error (&dtp->common, LIBERROR_OS, NULL);
return FAILURE;
}
- dtp->u.p.current_unit->strm_pos += (gfc_offset) nbytes;
- dtp->u.p.current_unit->bytes_left -= (gfc_offset) nbytes;
+ dtp->u.p.current_unit->strm_pos += (gfc_offset) have_written;
+ dtp->u.p.current_unit->bytes_left -= (gfc_offset) have_written;
return SUCCESS;
}
dtp->u.p.current_unit->bytes_left_subrecord -=
(gfc_offset) to_write_subrecord;
- if (swrite (dtp->u.p.current_unit->s, buf + have_written,
- &to_write_subrecord) != 0)
+ to_write_subrecord = swrite (dtp->u.p.current_unit->s,
+ buf + have_written, to_write_subrecord);
+ if (unlikely (to_write_subrecord < 0))
{
generate_error (&dtp->common, LIBERROR_OS, NULL);
return FAILURE;
us_write (dtp, 1);
}
dtp->u.p.current_unit->bytes_left -= have_written;
- if (short_record)
+ if (unlikely (short_record))
{
generate_error (&dtp->common, LIBERROR_SHORT_RECORD, NULL);
return FAILURE;
static void
unformatted_read (st_parameter_dt *dtp, bt type,
- void *dest, int kind __attribute__((unused)),
- size_t size, size_t nelems)
+ void *dest, int kind, size_t size, size_t nelems)
{
- size_t i, sz;
-
- /* Currently, character implies size=1. */
- if (dtp->u.p.current_unit->flags.convert == GFC_CONVERT_NATIVE
- || size == 1 || type == BT_CHARACTER)
+ if (likely (dtp->u.p.current_unit->flags.convert == GFC_CONVERT_NATIVE)
+ || kind == 1)
{
- sz = size * nelems;
- read_block_direct (dtp, dest, &sz);
+ if (type == BT_CHARACTER)
+ size *= GFC_SIZE_OF_CHAR_KIND(kind);
+ read_block_direct (dtp, dest, size * nelems);
}
else
{
char buffer[16];
char *p;
-
+ size_t i;
+
+ p = dest;
+
+ /* Handle wide chracters. */
+ if (type == BT_CHARACTER && kind != 1)
+ {
+ nelems *= size;
+ size = kind;
+ }
+
/* Break up complex into its constituent reals. */
if (type == BT_COMPLEX)
{
nelems *= 2;
size /= 2;
}
- p = dest;
/* By now, all complex variables have been split into their
constituent reals. */
- for (i=0; i<nelems; i++)
+ for (i = 0; i < nelems; i++)
{
- read_block_direct (dtp, buffer, &size);
+ read_block_direct (dtp, buffer, size);
reverse_memcpy (p, buffer, size);
p += size;
}
static void
unformatted_write (st_parameter_dt *dtp, bt type,
- void *source, int kind __attribute__((unused)),
- size_t size, size_t nelems)
+ void *source, int kind, size_t size, size_t nelems)
{
- if (dtp->u.p.current_unit->flags.convert == GFC_CONVERT_NATIVE ||
- size == 1 || type == BT_CHARACTER)
+ if (likely (dtp->u.p.current_unit->flags.convert == GFC_CONVERT_NATIVE)
+ || kind == 1)
{
- size *= nelems;
- write_buf (dtp, source, size);
+ size_t stride = type == BT_CHARACTER ?
+ size * GFC_SIZE_OF_CHAR_KIND(kind) : size;
+
+ write_buf (dtp, source, stride * nelems);
}
else
{
char buffer[16];
char *p;
size_t i;
+
+ p = source;
+
+ /* Handle wide chracters. */
+ if (type == BT_CHARACTER && kind != 1)
+ {
+ nelems *= size;
+ size = kind;
+ }
/* Break up complex into its constituent reals. */
if (type == BT_COMPLEX)
size /= 2;
}
- p = source;
-
/* By now, all complex variables have been split into their
constituent reals. */
-
- for (i=0; i<nelems; i++)
+ for (i = 0; i < nelems; i++)
{
reverse_memcpy(buffer, p, size);
- p+= size;
+ p += size;
write_buf (dtp, buffer, size);
}
}
}
-/* This subroutine is the main loop for a formatted data transfer
+/* This function is in the main loop for a formatted data transfer
statement. It would be natural to implement this as a coroutine
with the user program, but C makes that awkward. We loop,
processing format elements. When we actually have to transfer
data instead of just setting flags, we return control to the user
- program which calls a subroutine that supplies the address and type
+ program which calls a function that supplies the address and type
of the next element, then comes back here to process it. */
static void
-formatted_transfer_scalar (st_parameter_dt *dtp, bt type, void *p, int len,
- size_t size)
+formatted_transfer_scalar_read (st_parameter_dt *dtp, bt type, void *p, int kind,
+ size_t size)
+{
+ int pos, bytes_used;
+ const fnode *f;
+ format_token t;
+ int n;
+ int consume_data_flag;
+
+ /* Change a complex data item into a pair of reals. */
+
+ n = (p == NULL) ? 0 : ((type != BT_COMPLEX) ? 1 : 2);
+ if (type == BT_COMPLEX)
+ {
+ type = BT_REAL;
+ size /= 2;
+ }
+
+ /* If there's an EOR condition, we simulate finalizing the transfer
+ by doing nothing. */
+ if (dtp->u.p.eor_condition)
+ return;
+
+ /* Set this flag so that commas in reads cause the read to complete before
+ the entire field has been read. The next read field will start right after
+ the comma in the stream. (Set to 0 for character reads). */
+ dtp->u.p.sf_read_comma =
+ dtp->u.p.current_unit->decimal_status == DECIMAL_COMMA ? 0 : 1;
+
+ for (;;)
+ {
+ /* If reversion has occurred and there is another real data item,
+ then we have to move to the next record. */
+ if (dtp->u.p.reversion_flag && n > 0)
+ {
+ dtp->u.p.reversion_flag = 0;
+ next_record (dtp, 0);
+ }
+
+ consume_data_flag = 1;
+ if ((dtp->common.flags & IOPARM_LIBRETURN_MASK) != IOPARM_LIBRETURN_OK)
+ break;
+
+ f = next_format (dtp);
+ if (f == NULL)
+ {
+ /* No data descriptors left. */
+ if (unlikely (n > 0))
+ generate_error (&dtp->common, LIBERROR_FORMAT,
+ "Insufficient data descriptors in format after reversion");
+ return;
+ }
+
+ t = f->format;
+
+ bytes_used = (int)(dtp->u.p.current_unit->recl
+ - dtp->u.p.current_unit->bytes_left);
+
+ if (is_stream_io(dtp))
+ bytes_used = 0;
+
+ switch (t)
+ {
+ case FMT_I:
+ if (n == 0)
+ goto need_read_data;
+ if (require_type (dtp, BT_INTEGER, type, f))
+ return;
+ read_decimal (dtp, f, p, kind);
+ break;
+
+ case FMT_B:
+ if (n == 0)
+ goto need_read_data;
+ if (compile_options.allow_std < GFC_STD_GNU
+ && require_type (dtp, BT_INTEGER, type, f))
+ return;
+ read_radix (dtp, f, p, kind, 2);
+ break;
+
+ case FMT_O:
+ if (n == 0)
+ goto need_read_data;
+ if (compile_options.allow_std < GFC_STD_GNU
+ && require_type (dtp, BT_INTEGER, type, f))
+ return;
+ read_radix (dtp, f, p, kind, 8);
+ break;
+
+ case FMT_Z:
+ if (n == 0)
+ goto need_read_data;
+ if (compile_options.allow_std < GFC_STD_GNU
+ && require_type (dtp, BT_INTEGER, type, f))
+ return;
+ read_radix (dtp, f, p, kind, 16);
+ break;
+
+ case FMT_A:
+ if (n == 0)
+ goto need_read_data;
+
+ /* It is possible to have FMT_A with something not BT_CHARACTER such
+ as when writing out hollerith strings, so check both type
+ and kind before calling wide character routines. */
+ if (type == BT_CHARACTER && kind == 4)
+ read_a_char4 (dtp, f, p, size);
+ else
+ read_a (dtp, f, p, size);
+ break;
+
+ case FMT_L:
+ if (n == 0)
+ goto need_read_data;
+ read_l (dtp, f, p, kind);
+ break;
+
+ case FMT_D:
+ if (n == 0)
+ goto need_read_data;
+ if (require_type (dtp, BT_REAL, type, f))
+ return;
+ read_f (dtp, f, p, kind);
+ break;
+
+ case FMT_E:
+ if (n == 0)
+ goto need_read_data;
+ if (require_type (dtp, BT_REAL, type, f))
+ return;
+ read_f (dtp, f, p, kind);
+ break;
+
+ case FMT_EN:
+ if (n == 0)
+ goto need_read_data;
+ if (require_type (dtp, BT_REAL, type, f))
+ return;
+ read_f (dtp, f, p, kind);
+ break;
+
+ case FMT_ES:
+ if (n == 0)
+ goto need_read_data;
+ if (require_type (dtp, BT_REAL, type, f))
+ return;
+ read_f (dtp, f, p, kind);
+ break;
+
+ case FMT_F:
+ if (n == 0)
+ goto need_read_data;
+ if (require_type (dtp, BT_REAL, type, f))
+ return;
+ read_f (dtp, f, p, kind);
+ break;
+
+ case FMT_G:
+ if (n == 0)
+ goto need_read_data;
+ switch (type)
+ {
+ case BT_INTEGER:
+ read_decimal (dtp, f, p, kind);
+ break;
+ case BT_LOGICAL:
+ read_l (dtp, f, p, kind);
+ break;
+ case BT_CHARACTER:
+ if (kind == 4)
+ read_a_char4 (dtp, f, p, size);
+ else
+ read_a (dtp, f, p, size);
+ break;
+ case BT_REAL:
+ read_f (dtp, f, p, kind);
+ break;
+ default:
+ internal_error (&dtp->common, "formatted_transfer(): Bad type");
+ }
+ break;
+
+ case FMT_STRING:
+ consume_data_flag = 0;
+ format_error (dtp, f, "Constant string in input format");
+ return;
+
+ /* Format codes that don't transfer data. */
+ case FMT_X:
+ case FMT_TR:
+ consume_data_flag = 0;
+ dtp->u.p.skips += f->u.n;
+ pos = bytes_used + dtp->u.p.skips - 1;
+ dtp->u.p.pending_spaces = pos - dtp->u.p.max_pos + 1;
+ read_x (dtp, f->u.n);
+ break;
+
+ case FMT_TL:
+ case FMT_T:
+ consume_data_flag = 0;
+
+ if (f->format == FMT_TL)
+ {
+ /* Handle the special case when no bytes have been used yet.
+ Cannot go below zero. */
+ if (bytes_used == 0)
+ {
+ dtp->u.p.pending_spaces -= f->u.n;
+ dtp->u.p.skips -= f->u.n;
+ dtp->u.p.skips = dtp->u.p.skips < 0 ? 0 : dtp->u.p.skips;
+ }
+
+ pos = bytes_used - f->u.n;
+ }
+ else /* FMT_T */
+ pos = f->u.n - 1;
+
+ /* Standard 10.6.1.1: excessive left tabbing is reset to the
+ left tab limit. We do not check if the position has gone
+ beyond the end of record because a subsequent tab could
+ bring us back again. */
+ pos = pos < 0 ? 0 : pos;
+
+ dtp->u.p.skips = dtp->u.p.skips + pos - bytes_used;
+ dtp->u.p.pending_spaces = dtp->u.p.pending_spaces
+ + pos - dtp->u.p.max_pos;
+ dtp->u.p.pending_spaces = dtp->u.p.pending_spaces < 0
+ ? 0 : dtp->u.p.pending_spaces;
+ if (dtp->u.p.skips == 0)
+ break;
+
+ /* Adjust everything for end-of-record condition */
+ if (dtp->u.p.sf_seen_eor && !is_internal_unit (dtp))
+ {
+ dtp->u.p.current_unit->bytes_left -= dtp->u.p.sf_seen_eor;
+ dtp->u.p.skips -= dtp->u.p.sf_seen_eor;
+ bytes_used = pos;
+ dtp->u.p.sf_seen_eor = 0;
+ }
+ if (dtp->u.p.skips < 0)
+ {
+ if (is_internal_unit (dtp))
+ sseek (dtp->u.p.current_unit->s, dtp->u.p.skips, SEEK_CUR);
+ else
+ fbuf_seek (dtp->u.p.current_unit, dtp->u.p.skips, SEEK_CUR);
+ dtp->u.p.current_unit->bytes_left -= (gfc_offset) dtp->u.p.skips;
+ dtp->u.p.skips = dtp->u.p.pending_spaces = 0;
+ }
+ else
+ read_x (dtp, dtp->u.p.skips);
+ break;
+
+ case FMT_S:
+ consume_data_flag = 0;
+ dtp->u.p.sign_status = SIGN_S;
+ break;
+
+ case FMT_SS:
+ consume_data_flag = 0;
+ dtp->u.p.sign_status = SIGN_SS;
+ break;
+
+ case FMT_SP:
+ consume_data_flag = 0;
+ dtp->u.p.sign_status = SIGN_SP;
+ break;
+
+ case FMT_BN:
+ consume_data_flag = 0 ;
+ dtp->u.p.blank_status = BLANK_NULL;
+ break;
+
+ case FMT_BZ:
+ consume_data_flag = 0;
+ dtp->u.p.blank_status = BLANK_ZERO;
+ break;
+
+ case FMT_DC:
+ consume_data_flag = 0;
+ dtp->u.p.current_unit->decimal_status = DECIMAL_COMMA;
+ break;
+
+ case FMT_DP:
+ consume_data_flag = 0;
+ dtp->u.p.current_unit->decimal_status = DECIMAL_POINT;
+ break;
+
+ case FMT_RC:
+ consume_data_flag = 0;
+ dtp->u.p.current_unit->round_status = ROUND_COMPATIBLE;
+ break;
+
+ case FMT_RD:
+ consume_data_flag = 0;
+ dtp->u.p.current_unit->round_status = ROUND_DOWN;
+ break;
+
+ case FMT_RN:
+ consume_data_flag = 0;
+ dtp->u.p.current_unit->round_status = ROUND_NEAREST;
+ break;
+
+ case FMT_RP:
+ consume_data_flag = 0;
+ dtp->u.p.current_unit->round_status = ROUND_PROCDEFINED;
+ break;
+
+ case FMT_RU:
+ consume_data_flag = 0;
+ dtp->u.p.current_unit->round_status = ROUND_UP;
+ break;
+
+ case FMT_RZ:
+ consume_data_flag = 0;
+ dtp->u.p.current_unit->round_status = ROUND_ZERO;
+ break;
+
+ case FMT_P:
+ consume_data_flag = 0;
+ dtp->u.p.scale_factor = f->u.k;
+ break;
+
+ case FMT_DOLLAR:
+ consume_data_flag = 0;
+ dtp->u.p.seen_dollar = 1;
+ break;
+
+ case FMT_SLASH:
+ consume_data_flag = 0;
+ dtp->u.p.skips = dtp->u.p.pending_spaces = 0;
+ next_record (dtp, 0);
+ break;
+
+ case FMT_COLON:
+ /* A colon descriptor causes us to exit this loop (in
+ particular preventing another / descriptor from being
+ processed) unless there is another data item to be
+ transferred. */
+ consume_data_flag = 0;
+ if (n == 0)
+ return;
+ break;
+
+ default:
+ internal_error (&dtp->common, "Bad format node");
+ }
+
+ /* Adjust the item count and data pointer. */
+
+ if ((consume_data_flag > 0) && (n > 0))
+ {
+ n--;
+ p = ((char *) p) + size;
+ }
+
+ dtp->u.p.skips = 0;
+
+ pos = (int)(dtp->u.p.current_unit->recl - dtp->u.p.current_unit->bytes_left);
+ dtp->u.p.max_pos = (dtp->u.p.max_pos > pos) ? dtp->u.p.max_pos : pos;
+ }
+
+ return;
+
+ /* Come here when we need a data descriptor but don't have one. We
+ push the current format node back onto the input, then return and
+ let the user program call us back with the data. */
+ need_read_data:
+ unget_format (dtp, f);
+}
+
+
+static void
+formatted_transfer_scalar_write (st_parameter_dt *dtp, bt type, void *p, int kind,
+ size_t size)
{
- char scratch[SCRATCH_SIZE];
int pos, bytes_used;
const fnode *f;
format_token t;
/* Set this flag so that commas in reads cause the read to complete before
the entire field has been read. The next read field will start right after
the comma in the stream. (Set to 0 for character reads). */
- dtp->u.p.sf_read_comma = dtp->u.p.decimal_status == DECIMAL_COMMA ? 0 : 1;
- dtp->u.p.line_buffer = scratch;
+ dtp->u.p.sf_read_comma =
+ dtp->u.p.current_unit->decimal_status == DECIMAL_COMMA ? 0 : 1;
for (;;)
{
if (f == NULL)
{
/* No data descriptors left. */
- if (n > 0)
+ if (unlikely (n > 0))
generate_error (&dtp->common, LIBERROR_FORMAT,
"Insufficient data descriptors in format after reversion");
return;
if (dtp->u.p.skips < 0)
{
if (is_internal_unit (dtp))
- move_pos_offset (dtp->u.p.current_unit->s, dtp->u.p.skips);
+ sseek (dtp->u.p.current_unit->s, dtp->u.p.skips, SEEK_CUR);
else
- fbuf_seek (dtp->u.p.current_unit, dtp->u.p.skips);
+ fbuf_seek (dtp->u.p.current_unit, dtp->u.p.skips, SEEK_CUR);
dtp->u.p.current_unit->bytes_left -= (gfc_offset) dtp->u.p.skips;
}
dtp->u.p.skips = dtp->u.p.pending_spaces = 0;
goto need_data;
if (require_type (dtp, BT_INTEGER, type, f))
return;
-
- if (dtp->u.p.mode == READING)
- read_decimal (dtp, f, p, len);
- else
- write_i (dtp, f, p, len);
-
+ write_i (dtp, f, p, kind);
break;
case FMT_B:
if (n == 0)
goto need_data;
-
if (compile_options.allow_std < GFC_STD_GNU
&& require_type (dtp, BT_INTEGER, type, f))
return;
-
- if (dtp->u.p.mode == READING)
- read_radix (dtp, f, p, len, 2);
- else
- write_b (dtp, f, p, len);
-
+ write_b (dtp, f, p, kind);
break;
case FMT_O:
if (n == 0)
goto need_data;
-
if (compile_options.allow_std < GFC_STD_GNU
&& require_type (dtp, BT_INTEGER, type, f))
return;
-
- if (dtp->u.p.mode == READING)
- read_radix (dtp, f, p, len, 8);
- else
- write_o (dtp, f, p, len);
-
+ write_o (dtp, f, p, kind);
break;
case FMT_Z:
if (n == 0)
goto need_data;
-
if (compile_options.allow_std < GFC_STD_GNU
&& require_type (dtp, BT_INTEGER, type, f))
return;
-
- if (dtp->u.p.mode == READING)
- read_radix (dtp, f, p, len, 16);
- else
- write_z (dtp, f, p, len);
-
+ write_z (dtp, f, p, kind);
break;
case FMT_A:
if (n == 0)
goto need_data;
- if (dtp->u.p.mode == READING)
- read_a (dtp, f, p, len);
+ /* It is possible to have FMT_A with something not BT_CHARACTER such
+ as when writing out hollerith strings, so check both type
+ and kind before calling wide character routines. */
+ if (type == BT_CHARACTER && kind == 4)
+ write_a_char4 (dtp, f, p, size);
else
- write_a (dtp, f, p, len);
-
+ write_a (dtp, f, p, size);
break;
case FMT_L:
if (n == 0)
goto need_data;
-
- if (dtp->u.p.mode == READING)
- read_l (dtp, f, p, len);
- else
- write_l (dtp, f, p, len);
-
+ write_l (dtp, f, p, kind);
break;
case FMT_D:
goto need_data;
if (require_type (dtp, BT_REAL, type, f))
return;
-
- if (dtp->u.p.mode == READING)
- read_f (dtp, f, p, len);
- else
- write_d (dtp, f, p, len);
-
+ write_d (dtp, f, p, kind);
break;
case FMT_E:
goto need_data;
if (require_type (dtp, BT_REAL, type, f))
return;
-
- if (dtp->u.p.mode == READING)
- read_f (dtp, f, p, len);
- else
- write_e (dtp, f, p, len);
+ write_e (dtp, f, p, kind);
break;
case FMT_EN:
goto need_data;
if (require_type (dtp, BT_REAL, type, f))
return;
-
- if (dtp->u.p.mode == READING)
- read_f (dtp, f, p, len);
- else
- write_en (dtp, f, p, len);
-
+ write_en (dtp, f, p, kind);
break;
case FMT_ES:
goto need_data;
if (require_type (dtp, BT_REAL, type, f))
return;
-
- if (dtp->u.p.mode == READING)
- read_f (dtp, f, p, len);
- else
- write_es (dtp, f, p, len);
-
+ write_es (dtp, f, p, kind);
break;
case FMT_F:
- if (n == 0)
- goto need_data;
- if (require_type (dtp, BT_REAL, type, f))
- return;
-
- if (dtp->u.p.mode == READING)
- read_f (dtp, f, p, len);
- else
- write_f (dtp, f, p, len);
-
- break;
-
- case FMT_G:
- if (n == 0)
- goto need_data;
- if (dtp->u.p.mode == READING)
- switch (type)
- {
- case BT_INTEGER:
- read_decimal (dtp, f, p, len);
- break;
- case BT_LOGICAL:
- read_l (dtp, f, p, len);
- break;
- case BT_CHARACTER:
- read_a (dtp, f, p, len);
- break;
- case BT_REAL:
- read_f (dtp, f, p, len);
- break;
- default:
- goto bad_type;
- }
- else
- switch (type)
- {
+ if (n == 0)
+ goto need_data;
+ if (require_type (dtp, BT_REAL, type, f))
+ return;
+ write_f (dtp, f, p, kind);
+ break;
+
+ case FMT_G:
+ if (n == 0)
+ goto need_data;
+ switch (type)
+ {
case BT_INTEGER:
- write_i (dtp, f, p, len);
+ write_i (dtp, f, p, kind);
break;
case BT_LOGICAL:
- write_l (dtp, f, p, len);
+ write_l (dtp, f, p, kind);
break;
case BT_CHARACTER:
- write_a (dtp, f, p, len);
+ if (kind == 4)
+ write_a_char4 (dtp, f, p, size);
+ else
+ write_a (dtp, f, p, size);
break;
case BT_REAL:
if (f->u.real.w == 0)
- write_real (dtp, p, len);
+ write_real_g0 (dtp, p, kind, f->u.real.d);
else
- write_d (dtp, f, p, len);
+ write_d (dtp, f, p, kind);
break;
default:
- bad_type:
internal_error (&dtp->common,
"formatted_transfer(): Bad type");
- }
-
+ }
break;
case FMT_STRING:
consume_data_flag = 0;
- if (dtp->u.p.mode == READING)
- {
- format_error (dtp, f, "Constant string in input format");
- return;
- }
write_constant_string (dtp, f);
break;
dtp->u.p.skips += f->u.n;
pos = bytes_used + dtp->u.p.skips - 1;
dtp->u.p.pending_spaces = pos - dtp->u.p.max_pos + 1;
-
/* Writes occur just before the switch on f->format, above, so
that trailing blanks are suppressed, unless we are doing a
non-advancing write in which case we want to output the blanks
now. */
- if (dtp->u.p.mode == WRITING
- && dtp->u.p.advance_status == ADVANCE_NO)
+ if (dtp->u.p.advance_status == ADVANCE_NO)
{
write_x (dtp, dtp->u.p.skips, dtp->u.p.pending_spaces);
dtp->u.p.skips = dtp->u.p.pending_spaces = 0;
}
-
- if (dtp->u.p.mode == READING)
- read_x (dtp, f->u.n);
-
break;
case FMT_TL:
pos = bytes_used - f->u.n;
}
else /* FMT_T */
- {
- if (dtp->u.p.mode == READING)
- pos = f->u.n - 1;
- else
- pos = f->u.n - dtp->u.p.pending_spaces - 1;
- }
+ pos = f->u.n - dtp->u.p.pending_spaces - 1;
/* Standard 10.6.1.1: excessive left tabbing is reset to the
left tab limit. We do not check if the position has gone
+ pos - dtp->u.p.max_pos;
dtp->u.p.pending_spaces = dtp->u.p.pending_spaces < 0
? 0 : dtp->u.p.pending_spaces;
-
- if (dtp->u.p.skips == 0)
- break;
-
- /* Writes occur just before the switch on f->format, above, so that
- trailing blanks are suppressed. */
- if (dtp->u.p.mode == READING)
- {
- /* Adjust everything for end-of-record condition */
- if (dtp->u.p.sf_seen_eor && !is_internal_unit (dtp))
- {
- if (dtp->u.p.sf_seen_eor == 2)
- {
- /* The EOR was a CRLF (two bytes wide). */
- dtp->u.p.current_unit->bytes_left -= 2;
- dtp->u.p.skips -= 2;
- }
- else
- {
- /* The EOR marker was only one byte wide. */
- dtp->u.p.current_unit->bytes_left--;
- dtp->u.p.skips--;
- }
- bytes_used = pos;
- dtp->u.p.sf_seen_eor = 0;
- }
- if (dtp->u.p.skips < 0)
- {
- move_pos_offset (dtp->u.p.current_unit->s, dtp->u.p.skips);
- dtp->u.p.current_unit->bytes_left
- -= (gfc_offset) dtp->u.p.skips;
- dtp->u.p.skips = dtp->u.p.pending_spaces = 0;
- }
- else
- read_x (dtp, dtp->u.p.skips);
- }
-
break;
case FMT_S:
case FMT_DC:
consume_data_flag = 0;
- dtp->u.p.decimal_status = DECIMAL_COMMA;
+ dtp->u.p.current_unit->decimal_status = DECIMAL_COMMA;
break;
case FMT_DP:
consume_data_flag = 0;
- dtp->u.p.decimal_status = DECIMAL_POINT;
+ dtp->u.p.current_unit->decimal_status = DECIMAL_POINT;
+ break;
+
+ case FMT_RC:
+ consume_data_flag = 0;
+ dtp->u.p.current_unit->round_status = ROUND_COMPATIBLE;
+ break;
+
+ case FMT_RD:
+ consume_data_flag = 0;
+ dtp->u.p.current_unit->round_status = ROUND_DOWN;
+ break;
+
+ case FMT_RN:
+ consume_data_flag = 0;
+ dtp->u.p.current_unit->round_status = ROUND_NEAREST;
+ break;
+
+ case FMT_RP:
+ consume_data_flag = 0;
+ dtp->u.p.current_unit->round_status = ROUND_PROCDEFINED;
+ break;
+
+ case FMT_RU:
+ consume_data_flag = 0;
+ dtp->u.p.current_unit->round_status = ROUND_UP;
+ break;
+
+ case FMT_RZ:
+ consume_data_flag = 0;
+ dtp->u.p.current_unit->round_status = ROUND_ZERO;
break;
case FMT_P:
internal_error (&dtp->common, "Bad format node");
}
- /* Free a buffer that we had to allocate during a sequential
- formatted read of a block that was larger than the static
- buffer. */
-
- if (dtp->u.p.line_buffer != scratch)
- {
- free_mem (dtp->u.p.line_buffer);
- dtp->u.p.line_buffer = scratch;
- }
-
/* Adjust the item count and data pointer. */
if ((consume_data_flag > 0) && (n > 0))
- {
- n--;
- p = ((char *) p) + size;
- }
-
- if (dtp->u.p.mode == READING)
- dtp->u.p.skips = 0;
+ {
+ n--;
+ p = ((char *) p) + size;
+ }
pos = (int)(dtp->u.p.current_unit->recl - dtp->u.p.current_unit->bytes_left);
dtp->u.p.max_pos = (dtp->u.p.max_pos > pos) ? dtp->u.p.max_pos : pos;
-
}
return;
unget_format (dtp, f);
}
+
static void
formatted_transfer (st_parameter_dt *dtp, bt type, void *p, int kind,
size_t size, size_t nelems)
char *tmp;
tmp = (char *) p;
-
- /* Big loop over all the elements. */
- for (elem = 0; elem < nelems; elem++)
+ size_t stride = type == BT_CHARACTER ?
+ size * GFC_SIZE_OF_CHAR_KIND(kind) : size;
+ if (dtp->u.p.mode == READING)
+ {
+ /* Big loop over all the elements. */
+ for (elem = 0; elem < nelems; elem++)
+ {
+ dtp->u.p.item_count++;
+ formatted_transfer_scalar_read (dtp, type, tmp + stride*elem, kind, size);
+ }
+ }
+ else
{
- dtp->u.p.item_count++;
- formatted_transfer_scalar (dtp, type, tmp + size*elem, kind, size);
+ /* Big loop over all the elements. */
+ for (elem = 0; elem < nelems; elem++)
+ {
+ dtp->u.p.item_count++;
+ formatted_transfer_scalar_write (dtp, type, tmp + stride*elem, kind, size);
+ }
}
}
-
/* Data transfer entry points. The type of the data entity is
implicit in the subroutine call. This prevents us from having to
share a common enum with the compiler. */
if (len == 0 && p == NULL)
p = empty_string;
- /* Currently we support only 1 byte chars, and the library is a bit
- confused of character kind vs. length, so we kludge it by setting
- kind = length. */
- dtp->u.p.transfer (dtp, BT_CHARACTER, p, len, len, 1);
+ /* Set kind here to 1. */
+ dtp->u.p.transfer (dtp, BT_CHARACTER, p, 1, len, 1);
+}
+
+void
+transfer_character_wide (st_parameter_dt *dtp, void *p, int len, int kind)
+{
+ static char *empty_string[0];
+
+ if ((dtp->common.flags & IOPARM_LIBRETURN_MASK) != IOPARM_LIBRETURN_OK)
+ return;
+
+ /* Strings of zero length can have p == NULL, which confuses the
+ transfer routines into thinking we need more data elements. To avoid
+ this, we give them a nice pointer. */
+ if (len == 0 && p == NULL)
+ p = empty_string;
+
+ /* Here we pass the actual kind value. */
+ dtp->u.p.transfer (dtp, BT_CHARACTER, p, kind, len, 1);
}
break;
case GFC_DTYPE_CHARACTER:
iotype = BT_CHARACTER;
- /* FIXME: Currently dtype contains the charlen, which is
- clobbered if charlen > 2**24. That's why we use a separate
- argument for the charlen. However, if we want to support
- non-8-bit charsets we need to fix dtype to contain
- sizeof(chartype) and fix the code below. */
size = charlen;
- kind = charlen;
break;
case GFC_DTYPE_DERIVED:
internal_error (&dtp->common,
for (n = 0; n < rank; n++)
{
count[n] = 0;
- stride[n] = desc->dim[n].stride;
- extent[n] = desc->dim[n].ubound + 1 - desc->dim[n].lbound;
+ stride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(desc,n);
+ extent[n] = GFC_DESCRIPTOR_EXTENT(desc,n);
/* If the extent of even one dimension is zero, then the entire
array section contains zero elements, so we return after writing
stride0 = stride[0];
- /* If the innermost dimension has stride 1, we can do the transfer
+ /* If the innermost dimension has a stride of 1, we can do the transfer
in contiguous chunks. */
- if (stride0 == 1)
+ if (stride0 == size)
tsize = extent[0];
else
tsize = 1;
while (data)
{
dtp->u.p.transfer (dtp, iotype, data, kind, size, tsize);
- data += stride0 * size * tsize;
+ data += stride0 * tsize;
count[0] += tsize;
n = 0;
while (count[n] == extent[n])
{
count[n] = 0;
- data -= stride[n] * extent[n] * size;
+ data -= stride[n] * extent[n];
n++;
if (n == rank)
{
else
{
count[n]++;
- data += stride[n] * size;
+ data += stride[n];
}
}
}
static void
us_read (st_parameter_dt *dtp, int continued)
{
- size_t n, nr;
+ ssize_t n, nr;
GFC_INTEGER_4 i4;
GFC_INTEGER_8 i8;
gfc_offset i;
- if (dtp->u.p.current_unit->endfile == AT_ENDFILE)
- return;
-
if (compile_options.record_marker == 0)
n = sizeof (GFC_INTEGER_4);
else
n = compile_options.record_marker;
- nr = n;
-
- if (sread (dtp->u.p.current_unit->s, &i, &n) != 0)
+ nr = sread (dtp->u.p.current_unit->s, &i, n);
+ if (unlikely (nr < 0))
{
generate_error (&dtp->common, LIBERROR_BAD_US, NULL);
return;
}
-
- if (n == 0)
+ else if (nr == 0)
{
- dtp->u.p.current_unit->endfile = AT_ENDFILE;
+ hit_eof (dtp);
return; /* end of file */
}
-
- if (n != nr)
+ else if (unlikely (n != nr))
{
generate_error (&dtp->common, LIBERROR_BAD_US, NULL);
return;
}
/* Only GFC_CONVERT_NATIVE and GFC_CONVERT_SWAP are valid here. */
- if (dtp->u.p.current_unit->flags.convert == GFC_CONVERT_NATIVE)
+ if (likely (dtp->u.p.current_unit->flags.convert == GFC_CONVERT_NATIVE))
{
switch (nr)
{
static void
us_write (st_parameter_dt *dtp, int continued)
{
- size_t nbytes;
+ ssize_t nbytes;
gfc_offset dummy;
dummy = 0;
else
nbytes = compile_options.record_marker ;
- if (swrite (dtp->u.p.current_unit->s, &dummy, &nbytes) != 0)
+ if (swrite (dtp->u.p.current_unit->s, &dummy, nbytes) != nbytes)
generate_error (&dtp->common, LIBERROR_OS, NULL);
/* For sequential unformatted, if RECL= was not specified in the OPEN
namelist_info *ionml;
ionml = ((cf & IOPARM_DT_IONML_SET) != 0) ? dtp->u.p.ionml : NULL;
+
memset (&dtp->u.p, 0, sizeof (dtp->u.p));
+
dtp->u.p.ionml = ionml;
dtp->u.p.mode = read_flag ? READING : WRITING;
st_parameter_open opp;
unit_convert conv;
- if (dtp->common.unit < 0)
- {
- close_unit (dtp->u.p.current_unit);
- dtp->u.p.current_unit = NULL;
- generate_error (&dtp->common, LIBERROR_BAD_OPTION,
- "Bad unit number in OPEN statement");
- return;
- }
- memset (&u_flags, '\0', sizeof (u_flags));
- u_flags.access = ACCESS_SEQUENTIAL;
- u_flags.action = ACTION_READWRITE;
-
- /* Is it unformatted? */
- if (!(cf & (IOPARM_DT_HAS_FORMAT | IOPARM_DT_LIST_FORMAT
- | IOPARM_DT_IONML_SET)))
- u_flags.form = FORM_UNFORMATTED;
- else
- u_flags.form = FORM_UNSPECIFIED;
-
- u_flags.delim = DELIM_UNSPECIFIED;
- u_flags.blank = BLANK_UNSPECIFIED;
- u_flags.pad = PAD_UNSPECIFIED;
- u_flags.decimal = DECIMAL_UNSPECIFIED;
- u_flags.encoding = ENCODING_UNSPECIFIED;
- u_flags.async = ASYNC_UNSPECIFIED;
- u_flags.round = ROUND_UNSPECIFIED;
- u_flags.sign = SIGN_UNSPECIFIED;
- u_flags.status = STATUS_UNKNOWN;
-
- conv = get_unformatted_convert (dtp->common.unit);
-
- if (conv == GFC_CONVERT_NONE)
- conv = compile_options.convert;
-
- /* We use l8_to_l4_offset, which is 0 on little-endian machines
- and 1 on big-endian machines. */
- switch (conv)
- {
- case GFC_CONVERT_NATIVE:
- case GFC_CONVERT_SWAP:
- break;
+ if (dtp->common.unit < 0)
+ {
+ close_unit (dtp->u.p.current_unit);
+ dtp->u.p.current_unit = NULL;
+ generate_error (&dtp->common, LIBERROR_BAD_OPTION,
+ "Bad unit number in statement");
+ return;
+ }
+ memset (&u_flags, '\0', sizeof (u_flags));
+ u_flags.access = ACCESS_SEQUENTIAL;
+ u_flags.action = ACTION_READWRITE;
+
+ /* Is it unformatted? */
+ if (!(cf & (IOPARM_DT_HAS_FORMAT | IOPARM_DT_LIST_FORMAT
+ | IOPARM_DT_IONML_SET)))
+ u_flags.form = FORM_UNFORMATTED;
+ else
+ u_flags.form = FORM_UNSPECIFIED;
+
+ u_flags.delim = DELIM_UNSPECIFIED;
+ u_flags.blank = BLANK_UNSPECIFIED;
+ u_flags.pad = PAD_UNSPECIFIED;
+ u_flags.decimal = DECIMAL_UNSPECIFIED;
+ u_flags.encoding = ENCODING_UNSPECIFIED;
+ u_flags.async = ASYNC_UNSPECIFIED;
+ u_flags.round = ROUND_UNSPECIFIED;
+ u_flags.sign = SIGN_UNSPECIFIED;
+
+ u_flags.status = STATUS_UNKNOWN;
+
+ conv = get_unformatted_convert (dtp->common.unit);
+
+ if (conv == GFC_CONVERT_NONE)
+ conv = compile_options.convert;
+
+ /* We use big_endian, which is 0 on little-endian machines
+ and 1 on big-endian machines. */
+ switch (conv)
+ {
+ case GFC_CONVERT_NATIVE:
+ case GFC_CONVERT_SWAP:
+ break;
- case GFC_CONVERT_BIG:
- conv = l8_to_l4_offset ? GFC_CONVERT_NATIVE : GFC_CONVERT_SWAP;
- break;
+ case GFC_CONVERT_BIG:
+ conv = big_endian ? GFC_CONVERT_NATIVE : GFC_CONVERT_SWAP;
+ break;
- case GFC_CONVERT_LITTLE:
- conv = l8_to_l4_offset ? GFC_CONVERT_SWAP : GFC_CONVERT_NATIVE;
- break;
+ case GFC_CONVERT_LITTLE:
+ conv = big_endian ? GFC_CONVERT_SWAP : GFC_CONVERT_NATIVE;
+ break;
- default:
- internal_error (&opp.common, "Illegal value for CONVERT");
- break;
- }
+ default:
+ internal_error (&opp.common, "Illegal value for CONVERT");
+ break;
+ }
u_flags.convert = conv;
&& (cf & IOPARM_DT_HAS_REC) != 0)
{
generate_error (&dtp->common, LIBERROR_OPTION_CONFLICT,
- "Record number not allowed for sequential access data transfer");
+ "Record number not allowed for sequential access "
+ "data transfer");
return;
}
if (dtp->u.p.current_unit->flags.access == ACCESS_DIRECT)
{
generate_error (&dtp->common, LIBERROR_OPTION_CONFLICT,
- "ADVANCE specification conflicts with sequential access");
+ "ADVANCE specification conflicts with sequential "
+ "access");
return;
}
return;
}
- if ((cf & IOPARM_DT_HAS_SIZE) != 0 && dtp->u.p.advance_status != ADVANCE_NO)
+ if ((cf & IOPARM_DT_HAS_SIZE) != 0
+ && dtp->u.p.advance_status != ADVANCE_NO)
{
generate_error (&dtp->common, LIBERROR_MISSING_OPTION,
- "SIZE specification requires an ADVANCE specification of NO");
+ "SIZE specification requires an ADVANCE "
+ "specification of NO");
return;
}
}
if ((cf & IOPARM_END) != 0)
{
generate_error (&dtp->common, LIBERROR_OPTION_CONFLICT,
- "END specification cannot appear in a write statement");
+ "END specification cannot appear in a write "
+ "statement");
return;
}
if ((cf & IOPARM_EOR) != 0)
{
generate_error (&dtp->common, LIBERROR_OPTION_CONFLICT,
- "EOR specification cannot appear in a write statement");
+ "EOR specification cannot appear in a write "
+ "statement");
return;
}
if ((cf & IOPARM_DT_HAS_SIZE) != 0)
{
generate_error (&dtp->common, LIBERROR_OPTION_CONFLICT,
- "SIZE specification cannot appear in a write statement");
+ "SIZE specification cannot appear in a write "
+ "statement");
return;
}
}
dtp->u.p.advance_status = ADVANCE_YES;
/* Check the decimal mode. */
+ dtp->u.p.current_unit->decimal_status
+ = !(cf & IOPARM_DT_HAS_DECIMAL) ? DECIMAL_UNSPECIFIED :
+ find_option (&dtp->common, dtp->decimal, dtp->decimal_len,
+ decimal_opt, "Bad DECIMAL parameter in data transfer "
+ "statement");
- dtp->u.p.decimal_status
- = !(cf & IOPARM_DT_HAS_DECIMAL) ? DECIMAL_UNSPECIFIED :
- find_option (&dtp->common, dtp->decimal, dtp->decimal_len, decimal_opt,
- "Bad DECIMAL parameter in data transfer statement");
+ if (dtp->u.p.current_unit->decimal_status == DECIMAL_UNSPECIFIED)
+ dtp->u.p.current_unit->decimal_status = dtp->u.p.current_unit->flags.decimal;
- if (dtp->u.p.decimal_status == DECIMAL_UNSPECIFIED)
- dtp->u.p.decimal_status = dtp->u.p.current_unit->flags.decimal;
+ /* Check the round mode. */
+ dtp->u.p.current_unit->round_status
+ = !(cf & IOPARM_DT_HAS_ROUND) ? ROUND_UNSPECIFIED :
+ find_option (&dtp->common, dtp->round, dtp->round_len,
+ round_opt, "Bad ROUND parameter in data transfer "
+ "statement");
+
+ if (dtp->u.p.current_unit->round_status == ROUND_UNSPECIFIED)
+ dtp->u.p.current_unit->round_status = dtp->u.p.current_unit->flags.round;
/* Check the sign mode. */
dtp->u.p.sign_status
- = !(cf & IOPARM_DT_HAS_SIGN) ? SIGN_UNSPECIFIED :
- find_option (&dtp->common, dtp->sign, dtp->sign_len, sign_opt,
- "Bad SIGN parameter in data transfer statement");
+ = !(cf & IOPARM_DT_HAS_SIGN) ? SIGN_UNSPECIFIED :
+ find_option (&dtp->common, dtp->sign, dtp->sign_len, sign_opt,
+ "Bad SIGN parameter in data transfer statement");
if (dtp->u.p.sign_status == SIGN_UNSPECIFIED)
- dtp->u.p.sign_status = dtp->u.p.current_unit->flags.sign;
+ dtp->u.p.sign_status = dtp->u.p.current_unit->flags.sign;
/* Check the blank mode. */
dtp->u.p.blank_status
- = !(cf & IOPARM_DT_HAS_BLANK) ? BLANK_UNSPECIFIED :
- find_option (&dtp->common, dtp->blank, dtp->blank_len, blank_opt,
- "Bad BLANK parameter in data transfer statement");
+ = !(cf & IOPARM_DT_HAS_BLANK) ? BLANK_UNSPECIFIED :
+ find_option (&dtp->common, dtp->blank, dtp->blank_len,
+ blank_opt,
+ "Bad BLANK parameter in data transfer statement");
if (dtp->u.p.blank_status == BLANK_UNSPECIFIED)
- dtp->u.p.blank_status = dtp->u.p.current_unit->flags.blank;
-
+ dtp->u.p.blank_status = dtp->u.p.current_unit->flags.blank;
+
/* Check the delim mode. */
- dtp->u.p.delim_status
- = !(cf & IOPARM_DT_HAS_DELIM) ? DELIM_UNSPECIFIED :
- find_option (&dtp->common, dtp->delim, dtp->delim_len, delim_opt,
- "Bad DELIM parameter in data transfer statement");
+ dtp->u.p.current_unit->delim_status
+ = !(cf & IOPARM_DT_HAS_DELIM) ? DELIM_UNSPECIFIED :
+ find_option (&dtp->common, dtp->delim, dtp->delim_len,
+ delim_opt, "Bad DELIM parameter in data transfer statement");
- if (dtp->u.p.delim_status == DELIM_UNSPECIFIED)
- dtp->u.p.delim_status = dtp->u.p.current_unit->flags.delim;
+ if (dtp->u.p.current_unit->delim_status == DELIM_UNSPECIFIED)
+ dtp->u.p.current_unit->delim_status = dtp->u.p.current_unit->flags.delim;
/* Check the pad mode. */
- dtp->u.p.pad_status
- = !(cf & IOPARM_DT_HAS_PAD) ? PAD_UNSPECIFIED :
- find_option (&dtp->common, dtp->pad, dtp->pad_len, pad_opt,
- "Bad PAD parameter in data transfer statement");
+ dtp->u.p.current_unit->pad_status
+ = !(cf & IOPARM_DT_HAS_PAD) ? PAD_UNSPECIFIED :
+ find_option (&dtp->common, dtp->pad, dtp->pad_len, pad_opt,
+ "Bad PAD parameter in data transfer statement");
+
+ if (dtp->u.p.current_unit->pad_status == PAD_UNSPECIFIED)
+ dtp->u.p.current_unit->pad_status = dtp->u.p.current_unit->flags.pad;
+
+ /* Check to see if we might be reading what we wrote before */
+
+ if (dtp->u.p.mode != dtp->u.p.current_unit->mode
+ && !is_internal_unit (dtp))
+ {
+ int pos = fbuf_reset (dtp->u.p.current_unit);
+ if (pos != 0)
+ sseek (dtp->u.p.current_unit->s, pos, SEEK_CUR);
+ sflush(dtp->u.p.current_unit->s);
+ }
+
+ /* Check the POS= specifier: that it is in range and that it is used with a
+ unit that has been connected for STREAM access. F2003 9.5.1.10. */
+
+ if (((cf & IOPARM_DT_HAS_POS) != 0))
+ {
+ if (is_stream_io (dtp))
+ {
+
+ if (dtp->pos <= 0)
+ {
+ generate_error (&dtp->common, LIBERROR_BAD_OPTION,
+ "POS=specifier must be positive");
+ return;
+ }
+
+ if (dtp->pos >= dtp->u.p.current_unit->maxrec)
+ {
+ generate_error (&dtp->common, LIBERROR_BAD_OPTION,
+ "POS=specifier too large");
+ return;
+ }
+
+ dtp->rec = dtp->pos;
+
+ if (dtp->u.p.mode == READING)
+ {
+ /* Reset the endfile flag; if we hit EOF during reading
+ we'll set the flag and generate an error at that point
+ rather than worrying about it here. */
+ dtp->u.p.current_unit->endfile = NO_ENDFILE;
+ }
+
+ if (dtp->pos != dtp->u.p.current_unit->strm_pos)
+ {
+ fbuf_flush (dtp->u.p.current_unit, dtp->u.p.mode);
+ if (sseek (dtp->u.p.current_unit->s, dtp->pos - 1, SEEK_SET) < 0)
+ {
+ generate_error (&dtp->common, LIBERROR_OS, NULL);
+ return;
+ }
+ dtp->u.p.current_unit->strm_pos = dtp->pos;
+ }
+ }
+ else
+ {
+ generate_error (&dtp->common, LIBERROR_BAD_OPTION,
+ "POS=specifier not allowed, "
+ "Try OPEN with ACCESS='stream'");
+ return;
+ }
+ }
- if (dtp->u.p.pad_status == PAD_UNSPECIFIED)
- dtp->u.p.pad_status = dtp->u.p.current_unit->flags.pad;
-
+
/* Sanity checks on the record number. */
if ((cf & IOPARM_DT_HAS_REC) != 0)
{
return;
}
- /* Check to see if we might be reading what we wrote before */
+ /* Make sure format buffer is reset. */
+ if (dtp->u.p.current_unit->flags.form == FORM_FORMATTED)
+ fbuf_reset (dtp->u.p.current_unit);
- if (dtp->u.p.mode == READING
- && dtp->u.p.current_unit->mode == WRITING
- && !is_internal_unit (dtp))
- {
- fbuf_flush (dtp->u.p.current_unit, 1);
- flush(dtp->u.p.current_unit->s);
- }
/* Check whether the record exists to be read. Only
a partial record needs to exist. */
}
/* Position the file. */
- if (!is_stream_io (dtp))
- {
- if (sseek (dtp->u.p.current_unit->s, (gfc_offset) (dtp->rec - 1)
- * dtp->u.p.current_unit->recl) == FAILURE)
- {
- generate_error (&dtp->common, LIBERROR_OS, NULL);
- return;
- }
- }
- else
+ if (sseek (dtp->u.p.current_unit->s, (gfc_offset) (dtp->rec - 1)
+ * dtp->u.p.current_unit->recl, SEEK_SET) < 0)
{
- if (dtp->u.p.current_unit->strm_pos != dtp->rec)
- {
- fbuf_flush (dtp->u.p.current_unit, 1);
- flush (dtp->u.p.current_unit->s);
- if (sseek (dtp->u.p.current_unit->s, dtp->rec - 1) == FAILURE)
- {
- generate_error (&dtp->common, LIBERROR_OS, NULL);
- return;
- }
- dtp->u.p.current_unit->strm_pos = dtp->rec;
- }
+ generate_error (&dtp->common, LIBERROR_OS, NULL);
+ return;
}
- }
+ /* TODO: This is required to maintain compatibility between
+ 4.3 and 4.4 runtime. Remove when ABI changes from 4.3 */
- /* Overwriting an existing sequential file ?
- it is always safe to truncate the file on the first write */
- if (dtp->u.p.mode == WRITING
- && dtp->u.p.current_unit->flags.access == ACCESS_SEQUENTIAL
- && dtp->u.p.current_unit->last_record == 0
- && !is_preconnected(dtp->u.p.current_unit->s))
- struncate(dtp->u.p.current_unit->s);
+ if (is_stream_io (dtp))
+ dtp->u.p.current_unit->strm_pos = dtp->rec;
+
+ /* TODO: Un-comment this code when ABI changes from 4.3.
+ if (dtp->u.p.current_unit->flags.access == ACCESS_STREAM)
+ {
+ generate_error (&dtp->common, LIBERROR_OPTION_CONFLICT,
+ "Record number not allowed for stream access "
+ "data transfer");
+ return;
+ } */
+ }
/* Bugware for badly written mixed C-Fortran I/O. */
flush_if_preconnected(dtp->u.p.current_unit->s);
for (i=0; i<rank; i++)
{
- ls[i].idx = desc->dim[i].lbound;
- ls[i].start = desc->dim[i].lbound;
- ls[i].end = desc->dim[i].ubound;
- ls[i].step = desc->dim[i].stride;
- empty = empty || (desc->dim[i].ubound < desc->dim[i].lbound);
+ ls[i].idx = GFC_DESCRIPTOR_LBOUND(desc,i);
+ ls[i].start = GFC_DESCRIPTOR_LBOUND(desc,i);
+ ls[i].end = GFC_DESCRIPTOR_UBOUND(desc,i);
+ ls[i].step = GFC_DESCRIPTOR_STRIDE(desc,i);
+ empty = empty || (GFC_DESCRIPTOR_UBOUND(desc,i)
+ < GFC_DESCRIPTOR_LBOUND(desc,i));
- if (desc->dim[i].stride > 0)
+ if (GFC_DESCRIPTOR_STRIDE(desc,i) > 0)
{
- index += (desc->dim[i].ubound - desc->dim[i].lbound)
- * desc->dim[i].stride;
+ index += (GFC_DESCRIPTOR_EXTENT(desc,i) - 1)
+ * GFC_DESCRIPTOR_STRIDE(desc,i);
}
else
{
- index -= (desc->dim[i].ubound - desc->dim[i].lbound)
- * desc->dim[i].stride;
- *start_record -= (desc->dim[i].ubound - desc->dim[i].lbound)
- * desc->dim[i].stride;
+ index -= (GFC_DESCRIPTOR_EXTENT(desc,i) - 1)
+ * GFC_DESCRIPTOR_STRIDE(desc,i);
+ *start_record -= (GFC_DESCRIPTOR_EXTENT(desc,i) - 1)
+ * GFC_DESCRIPTOR_STRIDE(desc,i);
}
}
position. */
static void
-skip_record (st_parameter_dt *dtp, size_t bytes)
+skip_record (st_parameter_dt *dtp, ssize_t bytes)
{
- gfc_offset new;
- size_t rlength;
- static const size_t MAX_READ = 4096;
+ ssize_t rlength, readb;
+ static const ssize_t MAX_READ = 4096;
char p[MAX_READ];
dtp->u.p.current_unit->bytes_left_subrecord += bytes;
if (is_seekable (dtp->u.p.current_unit->s))
{
- new = file_position (dtp->u.p.current_unit->s)
- + dtp->u.p.current_unit->bytes_left_subrecord;
-
/* Direct access files do not generate END conditions,
only I/O errors. */
- if (sseek (dtp->u.p.current_unit->s, new) == FAILURE)
+ if (sseek (dtp->u.p.current_unit->s,
+ dtp->u.p.current_unit->bytes_left_subrecord, SEEK_CUR) < 0)
generate_error (&dtp->common, LIBERROR_OS, NULL);
+
+ dtp->u.p.current_unit->bytes_left_subrecord = 0;
}
else
{ /* Seek by reading data. */
while (dtp->u.p.current_unit->bytes_left_subrecord > 0)
{
rlength =
- (MAX_READ > (size_t) dtp->u.p.current_unit->bytes_left_subrecord) ?
- MAX_READ : (size_t) dtp->u.p.current_unit->bytes_left_subrecord;
+ (MAX_READ < dtp->u.p.current_unit->bytes_left_subrecord) ?
+ MAX_READ : dtp->u.p.current_unit->bytes_left_subrecord;
- if (sread (dtp->u.p.current_unit->s, p, &rlength) != 0)
+ readb = sread (dtp->u.p.current_unit->s, p, rlength);
+ if (readb < 0)
{
generate_error (&dtp->common, LIBERROR_OS, NULL);
return;
}
- dtp->u.p.current_unit->bytes_left_subrecord -= rlength;
+ dtp->u.p.current_unit->bytes_left_subrecord -= readb;
}
}
{
gfc_offset record;
int bytes_left;
- size_t length;
char p;
+ int cc;
switch (current_mode (dtp))
{
case FORMATTED_DIRECT:
case UNFORMATTED_DIRECT:
- skip_record (dtp, 0);
+ skip_record (dtp, dtp->u.p.current_unit->bytes_left);
break;
case FORMATTED_STREAM:
case FORMATTED_SEQUENTIAL:
- length = 1;
- /* sf_read has already terminated input because of an '\n' */
- if (dtp->u.p.sf_seen_eor)
+ /* read_sf has already terminated input because of an '\n', or
+ we have hit EOF. */
+ if (dtp->u.p.sf_seen_eor || dtp->u.p.at_eof)
{
dtp->u.p.sf_seen_eor = 0;
+ dtp->u.p.at_eof = 0;
break;
}
/* Now seek to this record. */
record = record * dtp->u.p.current_unit->recl;
- if (sseek (dtp->u.p.current_unit->s, record) == FAILURE)
+ if (sseek (dtp->u.p.current_unit->s, record, SEEK_SET) < 0)
{
generate_error (&dtp->common, LIBERROR_INTERNAL_UNIT, NULL);
break;
bytes_left = (int) dtp->u.p.current_unit->bytes_left;
bytes_left = min_off (bytes_left,
file_length (dtp->u.p.current_unit->s)
- - file_position (dtp->u.p.current_unit->s));
+ - stell (dtp->u.p.current_unit->s));
if (sseek (dtp->u.p.current_unit->s,
- file_position (dtp->u.p.current_unit->s)
- + bytes_left) == FAILURE)
+ bytes_left, SEEK_CUR) < 0)
{
generate_error (&dtp->common, LIBERROR_INTERNAL_UNIT, NULL);
break;
}
break;
}
- else do
+ else
{
- if (sread (dtp->u.p.current_unit->s, &p, &length) != 0)
- {
- generate_error (&dtp->common, LIBERROR_OS, NULL);
- break;
- }
-
- if (length == 0)
+ do
{
- dtp->u.p.current_unit->endfile = AT_ENDFILE;
- break;
+ errno = 0;
+ cc = fbuf_getc (dtp->u.p.current_unit);
+ if (cc == EOF)
+ {
+ if (errno != 0)
+ generate_error (&dtp->common, LIBERROR_OS, NULL);
+ else
+ hit_eof (dtp);
+ break;
+ }
+
+ if (is_stream_io (dtp))
+ dtp->u.p.current_unit->strm_pos++;
+
+ p = (char) cc;
}
-
- if (is_stream_io (dtp))
- dtp->u.p.current_unit->strm_pos++;
+ while (p != '\n');
}
- while (p != '\n');
-
break;
}
-
- if (dtp->u.p.current_unit->flags.access == ACCESS_SEQUENTIAL
- && !dtp->u.p.namelist_mode
- && dtp->u.p.current_unit->endfile == NO_ENDFILE
- && (file_length (dtp->u.p.current_unit->s) ==
- file_position (dtp->u.p.current_unit->s)))
- dtp->u.p.current_unit->endfile = AT_ENDFILE;
-
}
/* Small utility function to write a record marker, taking care of
byte swapping and of choosing the correct size. */
-inline static int
+static int
write_us_marker (st_parameter_dt *dtp, const gfc_offset buf)
{
size_t len;
len = compile_options.record_marker;
/* Only GFC_CONVERT_NATIVE and GFC_CONVERT_SWAP are valid here. */
- if (dtp->u.p.current_unit->flags.convert == GFC_CONVERT_NATIVE)
+ if (likely (dtp->u.p.current_unit->flags.convert == GFC_CONVERT_NATIVE))
{
switch (len)
{
case sizeof (GFC_INTEGER_4):
buf4 = buf;
- return swrite (dtp->u.p.current_unit->s, &buf4, &len);
+ return swrite (dtp->u.p.current_unit->s, &buf4, len);
break;
case sizeof (GFC_INTEGER_8):
buf8 = buf;
- return swrite (dtp->u.p.current_unit->s, &buf8, &len);
+ return swrite (dtp->u.p.current_unit->s, &buf8, len);
break;
default:
case sizeof (GFC_INTEGER_4):
buf4 = buf;
reverse_memcpy (p, &buf4, sizeof (GFC_INTEGER_4));
- return swrite (dtp->u.p.current_unit->s, p, &len);
+ return swrite (dtp->u.p.current_unit->s, p, len);
break;
case sizeof (GFC_INTEGER_8):
buf8 = buf;
reverse_memcpy (p, &buf8, sizeof (GFC_INTEGER_8));
- return swrite (dtp->u.p.current_unit->s, p, &len);
+ return swrite (dtp->u.p.current_unit->s, p, len);
break;
default:
static void
next_record_w_unf (st_parameter_dt *dtp, int next_subrecord)
{
- gfc_offset c, m, m_write;
- size_t record_marker;
+ gfc_offset m, m_write, record_marker;
/* Bytes written. */
m = dtp->u.p.current_unit->recl_subrecord
- dtp->u.p.current_unit->bytes_left_subrecord;
- c = file_position (dtp->u.p.current_unit->s);
/* Write the length tail. If we finish a record containing
subrecords, we write out the negative length. */
else
m_write = m;
- if (write_us_marker (dtp, m_write) != 0)
+ if (unlikely (write_us_marker (dtp, m_write) < 0))
goto io_error;
if (compile_options.record_marker == 0)
/* Seek to the head and overwrite the bogus length with the real
length. */
- if (sseek (dtp->u.p.current_unit->s, c - m - record_marker)
- == FAILURE)
+ if (unlikely (sseek (dtp->u.p.current_unit->s, - m - 2 * record_marker,
+ SEEK_CUR) < 0))
goto io_error;
if (next_subrecord)
else
m_write = m;
- if (write_us_marker (dtp, m_write) != 0)
+ if (unlikely (write_us_marker (dtp, m_write) < 0))
goto io_error;
/* Seek past the end of the current record. */
- if (sseek (dtp->u.p.current_unit->s, c + record_marker) == FAILURE)
+ if (unlikely (sseek (dtp->u.p.current_unit->s, m + record_marker,
+ SEEK_CUR) < 0))
goto io_error;
return;
}
+
+/* Utility function like memset() but operating on streams. Return
+ value is same as for POSIX write(). */
+
+static ssize_t
+sset (stream * s, int c, ssize_t nbyte)
+{
+ static const int WRITE_CHUNK = 256;
+ char p[WRITE_CHUNK];
+ ssize_t bytes_left, trans;
+
+ if (nbyte < WRITE_CHUNK)
+ memset (p, c, nbyte);
+ else
+ memset (p, c, WRITE_CHUNK);
+
+ bytes_left = nbyte;
+ while (bytes_left > 0)
+ {
+ trans = (bytes_left < WRITE_CHUNK) ? bytes_left : WRITE_CHUNK;
+ trans = swrite (s, p, trans);
+ if (trans <= 0)
+ return trans;
+ bytes_left -= trans;
+ }
+
+ return nbyte - bytes_left;
+}
+
/* Position to the next record in write mode. */
static void
gfc_offset m, record, max_pos;
int length;
- /* Flush and reset the format buffer. */
- fbuf_flush (dtp->u.p.current_unit, 1);
-
/* Zero counters for X- and T-editing. */
max_pos = dtp->u.p.max_pos;
dtp->u.p.max_pos = dtp->u.p.skips = dtp->u.p.pending_spaces = 0;
if (dtp->u.p.current_unit->bytes_left == 0)
break;
+ fbuf_seek (dtp->u.p.current_unit, 0, SEEK_END);
+ fbuf_flush (dtp->u.p.current_unit, WRITING);
if (sset (dtp->u.p.current_unit->s, ' ',
- dtp->u.p.current_unit->bytes_left) == FAILURE)
+ dtp->u.p.current_unit->bytes_left)
+ != dtp->u.p.current_unit->bytes_left)
goto io_error;
break;
if (dtp->u.p.current_unit->bytes_left > 0)
{
length = (int) dtp->u.p.current_unit->bytes_left;
- if (sset (dtp->u.p.current_unit->s, 0, length) == FAILURE)
+ if (sset (dtp->u.p.current_unit->s, 0, length) != length)
goto io_error;
}
break;
{
length = (int) (max_pos - m);
if (sseek (dtp->u.p.current_unit->s,
- file_position (dtp->u.p.current_unit->s)
- + length) == FAILURE)
+ length, SEEK_CUR) < 0)
{
generate_error (&dtp->common, LIBERROR_INTERNAL_UNIT, NULL);
return;
length = (int) (dtp->u.p.current_unit->recl - max_pos);
}
- if (sset (dtp->u.p.current_unit->s, ' ', length) == FAILURE)
+ if (sset (dtp->u.p.current_unit->s, ' ', length) != length)
{
generate_error (&dtp->common, LIBERROR_END, NULL);
return;
/* Now seek to this record */
record = record * dtp->u.p.current_unit->recl;
- if (sseek (dtp->u.p.current_unit->s, record) == FAILURE)
+ if (sseek (dtp->u.p.current_unit->s, record, SEEK_SET) < 0)
{
generate_error (&dtp->common, LIBERROR_INTERNAL_UNIT, NULL);
return;
{
length = (int) (max_pos - m);
if (sseek (dtp->u.p.current_unit->s,
- file_position (dtp->u.p.current_unit->s)
- + length) == FAILURE)
+ length, SEEK_CUR) < 0)
{
generate_error (&dtp->common, LIBERROR_INTERNAL_UNIT, NULL);
return;
length = (int) dtp->u.p.current_unit->bytes_left;
}
- if (sset (dtp->u.p.current_unit->s, ' ', length) == FAILURE)
+ if (sset (dtp->u.p.current_unit->s, ' ', length) != length)
{
generate_error (&dtp->common, LIBERROR_END, NULL);
return;
}
else
{
- size_t len;
- const char crlf[] = "\r\n";
-
#ifdef HAVE_CRLF
- len = 2;
+ const int len = 2;
#else
- len = 1;
+ const int len = 1;
#endif
- if (swrite (dtp->u.p.current_unit->s, &crlf[2-len], &len) != 0)
- goto io_error;
-
+ fbuf_seek (dtp->u.p.current_unit, 0, SEEK_END);
+ char * p = fbuf_alloc (dtp->u.p.current_unit, len);
+ if (!p)
+ goto io_error;
+#ifdef HAVE_CRLF
+ *(p++) = '\r';
+#endif
+ *p = '\n';
if (is_stream_io (dtp))
{
dtp->u.p.current_unit->strm_pos += len;
if (dtp->u.p.current_unit->strm_pos
< file_length (dtp->u.p.current_unit->s))
- struncate (dtp->u.p.current_unit->s);
+ unit_truncate (dtp->u.p.current_unit,
+ dtp->u.p.current_unit->strm_pos - 1,
+ &dtp->common);
}
}
dtp->u.p.current_unit->current_record = 0;
if (dtp->u.p.current_unit->flags.access == ACCESS_DIRECT)
{
- fp = file_position (dtp->u.p.current_unit->s);
+ fp = stell (dtp->u.p.current_unit->s);
/* Calculate next record, rounding up partial records. */
dtp->u.p.current_unit->last_record =
(fp + dtp->u.p.current_unit->recl - 1) /
if (!done)
pre_position (dtp);
+
+ fbuf_flush (dtp->u.p.current_unit, dtp->u.p.mode);
}
GFC_INTEGER_4 cf = dtp->common.flags;
if ((dtp->common.flags & IOPARM_DT_HAS_SIZE) != 0)
- *dtp->size = (GFC_IO_INT) dtp->u.p.size_used;
+ *dtp->size = dtp->u.p.size_used;
if (dtp->u.p.eor_condition)
{
}
if ((dtp->common.flags & IOPARM_LIBRETURN_MASK) != IOPARM_LIBRETURN_OK)
- return;
+ {
+ if (dtp->u.p.current_unit && current_mode (dtp) == UNFORMATTED_SEQUENTIAL)
+ dtp->u.p.current_unit->current_record = 0;
+ return;
+ }
if ((dtp->u.p.ionml != NULL)
&& (cf & IOPARM_DT_HAS_NAMELIST_NAME) != 0)
if ((cf & IOPARM_DT_LIST_FORMAT) != 0 && dtp->u.p.mode == READING)
{
finish_list_read (dtp);
- sfree (dtp->u.p.current_unit->s);
return;
}
&& dtp->u.p.advance_status != ADVANCE_NO)
next_record (dtp, 1);
- if (dtp->u.p.current_unit->flags.form == FORM_UNFORMATTED
- && file_position (dtp->u.p.current_unit->s) >= dtp->rec)
- {
- flush (dtp->u.p.current_unit->s);
- sfree (dtp->u.p.current_unit->s);
- }
return;
}
if (!is_internal_unit (dtp) && dtp->u.p.seen_dollar)
{
+ fbuf_flush (dtp->u.p.current_unit, dtp->u.p.mode);
dtp->u.p.seen_dollar = 0;
- fbuf_flush (dtp->u.p.current_unit, 1);
- sfree (dtp->u.p.current_unit->s);
return;
}
- dtp->u.p.current_unit->bytes_left);
dtp->u.p.current_unit->saved_pos =
dtp->u.p.max_pos > 0 ? dtp->u.p.max_pos - bytes_written : 0;
- fbuf_flush (dtp->u.p.current_unit, 0);
- flush (dtp->u.p.current_unit->s);
+ fbuf_flush (dtp->u.p.current_unit, dtp->u.p.mode);
return;
}
+ else if (dtp->u.p.current_unit->flags.form == FORM_FORMATTED
+ && dtp->u.p.mode == WRITING && !is_internal_unit (dtp))
+ fbuf_seek (dtp->u.p.current_unit, 0, SEEK_END);
dtp->u.p.current_unit->saved_pos = 0;
next_record (dtp, 1);
- sfree (dtp->u.p.current_unit->s);
}
/* Transfer function for IOLENGTH. It doesn't actually do any
size_t size, size_t nelems)
{
if ((dtp->common.flags & IOPARM_DT_HAS_IOLENGTH) != 0)
- *dtp->iolength += (GFC_IO_INT) size * nelems;
+ *dtp->iolength += (GFC_IO_INT) (size * nelems);
}
st_iolength_done (st_parameter_dt *dtp __attribute__((unused)))
{
free_ionml (dtp);
- if (dtp->u.p.scratch != NULL)
- free_mem (dtp->u.p.scratch);
library_end ();
}
library_start (&dtp->common);
data_transfer_init (dtp, 1);
-
- /* Handle complications dealing with the endfile record. */
-
- if (dtp->u.p.current_unit->flags.access == ACCESS_SEQUENTIAL)
- switch (dtp->u.p.current_unit->endfile)
- {
- case NO_ENDFILE:
- break;
-
- case AT_ENDFILE:
- if (!is_internal_unit (dtp))
- {
- generate_error (&dtp->common, LIBERROR_END, NULL);
- dtp->u.p.current_unit->endfile = AFTER_ENDFILE;
- dtp->u.p.current_unit->current_record = 0;
- }
- break;
-
- case AFTER_ENDFILE:
- generate_error (&dtp->common, LIBERROR_ENDFILE, NULL);
- dtp->u.p.current_unit->current_record = 0;
- break;
- }
}
extern void st_read_done (st_parameter_dt *);
st_read_done (st_parameter_dt *dtp)
{
finalize_transfer (dtp);
- free_format_data (dtp);
+ if (is_internal_unit (dtp) || dtp->u.p.format_not_saved)
+ free_format_data (dtp->u.p.fmt);
free_ionml (dtp);
- if (dtp->u.p.scratch != NULL)
- free_mem (dtp->u.p.scratch);
if (dtp->u.p.current_unit != NULL)
unlock_unit (dtp->u.p.current_unit);
case NO_ENDFILE:
/* Get rid of whatever is after this record. */
if (!is_internal_unit (dtp))
- {
- flush (dtp->u.p.current_unit->s);
- if (struncate (dtp->u.p.current_unit->s) == FAILURE)
- generate_error (&dtp->common, LIBERROR_OS, NULL);
- }
+ unit_truncate (dtp->u.p.current_unit,
+ stell (dtp->u.p.current_unit->s),
+ &dtp->common);
dtp->u.p.current_unit->endfile = AT_ENDFILE;
break;
}
- free_format_data (dtp);
+ if (is_internal_unit (dtp) || dtp->u.p.format_not_saved)
+ free_format_data (dtp->u.p.fmt);
free_ionml (dtp);
- if (dtp->u.p.scratch != NULL)
- free_mem (dtp->u.p.scratch);
if (dtp->u.p.current_unit != NULL)
unlock_unit (dtp->u.p.current_unit);
for (nml = dtp->u.p.ionml; nml->next; nml = nml->next);
- nml->dim[n].stride = stride;
- nml->dim[n].lbound = lbound;
- nml->dim[n].ubound = ubound;
+ GFC_DIMENSION_SET(nml->dim[n],lbound,ubound,stride);
}
/* Reverse memcpy - used for byte swapping. */
for (i=0; i<n; i++)
*(d++) = *(s--);
}
+
+
+/* Once upon a time, a poor innocent Fortran program was reading a
+ file, when suddenly it hit the end-of-file (EOF). Unfortunately
+ the OS doesn't tell whether we're at the EOF or whether we already
+ went past it. Luckily our hero, libgfortran, keeps track of this.
+ Call this function when you detect an EOF condition. See Section
+ 9.10.2 in F2003. */
+
+void
+hit_eof (st_parameter_dt * dtp)
+{
+ dtp->u.p.current_unit->flags.position = POSITION_APPEND;
+
+ if (dtp->u.p.current_unit->flags.access == ACCESS_SEQUENTIAL)
+ switch (dtp->u.p.current_unit->endfile)
+ {
+ case NO_ENDFILE:
+ case AT_ENDFILE:
+ generate_error (&dtp->common, LIBERROR_END, NULL);
+ if (!is_internal_unit (dtp))
+ {
+ dtp->u.p.current_unit->endfile = AFTER_ENDFILE;
+ dtp->u.p.current_unit->current_record = 0;
+ }
+ else
+ dtp->u.p.current_unit->endfile = AT_ENDFILE;
+ break;
+
+ case AFTER_ENDFILE:
+ generate_error (&dtp->common, LIBERROR_ENDFILE, NULL);
+ dtp->u.p.current_unit->current_record = 0;
+ break;
+ }
+ else
+ {
+ /* Non-sequential files don't have an ENDFILE record, so we
+ can't be at AFTER_ENDFILE. */
+ dtp->u.p.current_unit->endfile = AT_ENDFILE;
+ generate_error (&dtp->common, LIBERROR_END, NULL);
+ dtp->u.p.current_unit->current_record = 0;
+ }
+}
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