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/* Copyright (C) 2002-2022 Free Software Foundation, Inc.
Contributed by Andy Vaught
This file is part of the GNU Fortran runtime library (libgfortran).
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 3, or (at your option)
any later version.
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.
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/>. */
/* Implement the non-IOLENGTH variant of the INQUIRY statement */
#include "io.h"
#include "async.h"
#include "unix.h"
#include <string.h>
static const char yes[] = "YES", no[] = "NO", undefined[] = "UNDEFINED";
/* inquire_via_unit()-- Inquiry via unit number. The unit might not exist. */
static void
inquire_via_unit (st_parameter_inquire *iqp, gfc_unit *u)
{
const char *p;
GFC_INTEGER_4 cf = iqp->common.flags;
if (iqp->common.unit == GFC_INTERNAL_UNIT ||
iqp->common.unit == GFC_INTERNAL_UNIT4 ||
(u != NULL && u->internal_unit_kind != 0))
generate_error (&iqp->common, LIBERROR_INQUIRE_INTERNAL_UNIT, NULL);
if ((cf & IOPARM_INQUIRE_HAS_EXIST) != 0)
*iqp->exist = (u != NULL &&
iqp->common.unit != GFC_INTERNAL_UNIT &&
iqp->common.unit != GFC_INTERNAL_UNIT4)
|| (iqp->common.unit >= 0);
if ((cf & IOPARM_INQUIRE_HAS_OPENED) != 0)
*iqp->opened = (u != NULL);
if ((cf & IOPARM_INQUIRE_HAS_NUMBER) != 0)
*iqp->number = (u != NULL) ? u->unit_number : -1;
if ((cf & IOPARM_INQUIRE_HAS_NAMED) != 0)
*iqp->named = (u != NULL && u->flags.status != STATUS_SCRATCH);
if ((cf & IOPARM_INQUIRE_HAS_NAME) != 0
&& u != NULL && u->flags.status != STATUS_SCRATCH)
{
#if defined(HAVE_TTYNAME_R) || defined(HAVE_TTYNAME)
if (u->unit_number == options.stdin_unit
|| u->unit_number == options.stdout_unit
|| u->unit_number == options.stderr_unit)
{
int err = stream_ttyname (u->s, iqp->name, iqp->name_len);
if (err == 0)
{
gfc_charlen_type tmplen = strlen (iqp->name);
if (iqp->name_len > tmplen)
memset (&iqp->name[tmplen], ' ', iqp->name_len - tmplen);
}
else /* If ttyname does not work, go with the default. */
cf_strcpy (iqp->name, iqp->name_len, u->filename);
}
else
cf_strcpy (iqp->name, iqp->name_len, u->filename);
#elif defined __MINGW32__
if (u->unit_number == options.stdin_unit)
fstrcpy (iqp->name, iqp->name_len, "CONIN$", sizeof("CONIN$"));
else if (u->unit_number == options.stdout_unit)
fstrcpy (iqp->name, iqp->name_len, "CONOUT$", sizeof("CONOUT$"));
else if (u->unit_number == options.stderr_unit)
fstrcpy (iqp->name, iqp->name_len, "CONERR$", sizeof("CONERR$"));
else
cf_strcpy (iqp->name, iqp->name_len, u->filename);
#else
cf_strcpy (iqp->name, iqp->name_len, u->filename);
#endif
}
if ((cf & IOPARM_INQUIRE_HAS_ACCESS) != 0)
{
if (u == NULL)
p = undefined;
else
switch (u->flags.access)
{
case ACCESS_SEQUENTIAL:
p = "SEQUENTIAL";
break;
case ACCESS_DIRECT:
p = "DIRECT";
break;
case ACCESS_STREAM:
p = "STREAM";
break;
default:
internal_error (&iqp->common, "inquire_via_unit(): Bad access");
}
cf_strcpy (iqp->access, iqp->access_len, p);
}
if ((cf & IOPARM_INQUIRE_HAS_SEQUENTIAL) != 0)
{
if (u == NULL)
p = inquire_sequential (NULL, 0);
else
switch (u->flags.access)
{
case ACCESS_DIRECT:
case ACCESS_STREAM:
p = no;
break;
case ACCESS_SEQUENTIAL:
p = yes;
break;
default:
internal_error (&iqp->common, "inquire_via_unit(): Bad access");
}
cf_strcpy (iqp->sequential, iqp->sequential_len, p);
}
if ((cf & IOPARM_INQUIRE_HAS_DIRECT) != 0)
{
if (u == NULL)
p = inquire_direct (NULL, 0);
else
switch (u->flags.access)
{
case ACCESS_SEQUENTIAL:
case ACCESS_STREAM:
p = no;
break;
case ACCESS_DIRECT:
p = yes;
break;
default:
internal_error (&iqp->common, "inquire_via_unit(): Bad access");
}
cf_strcpy (iqp->direct, iqp->direct_len, p);
}
if ((cf & IOPARM_INQUIRE_HAS_FORM) != 0)
{
if (u == NULL)
p = undefined;
else
switch (u->flags.form)
{
case FORM_FORMATTED:
p = "FORMATTED";
break;
case FORM_UNFORMATTED:
p = "UNFORMATTED";
break;
default:
internal_error (&iqp->common, "inquire_via_unit(): Bad form");
}
cf_strcpy (iqp->form, iqp->form_len, p);
}
if ((cf & IOPARM_INQUIRE_HAS_FORMATTED) != 0)
{
if (u == NULL)
p = inquire_formatted (NULL, 0);
else
switch (u->flags.form)
{
case FORM_FORMATTED:
p = yes;
break;
case FORM_UNFORMATTED:
p = no;
break;
default:
internal_error (&iqp->common, "inquire_via_unit(): Bad form");
}
cf_strcpy (iqp->formatted, iqp->formatted_len, p);
}
if ((cf & IOPARM_INQUIRE_HAS_UNFORMATTED) != 0)
{
if (u == NULL)
p = inquire_unformatted (NULL, 0);
else
switch (u->flags.form)
{
case FORM_FORMATTED:
p = no;
break;
case FORM_UNFORMATTED:
p = yes;
break;
default:
internal_error (&iqp->common, "inquire_via_unit(): Bad form");
}
cf_strcpy (iqp->unformatted, iqp->unformatted_len, p);
}
if ((cf & IOPARM_INQUIRE_HAS_RECL_OUT) != 0)
/* F2018 (N2137) 12.10.2.26: If there is no connection, recl is
assigned the value -1. */
*iqp->recl_out = (u != NULL) ? u->recl : -1;
if ((cf & IOPARM_INQUIRE_HAS_STRM_POS_OUT) != 0)
*iqp->strm_pos_out = (u != NULL) ? u->strm_pos : 0;
if ((cf & IOPARM_INQUIRE_HAS_NEXTREC) != 0)
{
/* This only makes sense in the context of DIRECT access. */
if (u != NULL && u->flags.access == ACCESS_DIRECT)
*iqp->nextrec = u->last_record + 1;
else
*iqp->nextrec = 0;
}
if ((cf & IOPARM_INQUIRE_HAS_BLANK) != 0)
{
if (u == NULL || u->flags.form != FORM_FORMATTED)
p = undefined;
else
switch (u->flags.blank)
{
case BLANK_NULL:
p = "NULL";
break;
case BLANK_ZERO:
p = "ZERO";
break;
default:
internal_error (&iqp->common, "inquire_via_unit(): Bad blank");
}
cf_strcpy (iqp->blank, iqp->blank_len, p);
}
if ((cf & IOPARM_INQUIRE_HAS_PAD) != 0)
{
if (u == NULL || u->flags.form != FORM_FORMATTED)
p = undefined;
else
switch (u->flags.pad)
{
case PAD_YES:
p = yes;
break;
case PAD_NO:
p = no;
break;
default:
internal_error (&iqp->common, "inquire_via_unit(): Bad pad");
}
cf_strcpy (iqp->pad, iqp->pad_len, p);
}
if (cf & IOPARM_INQUIRE_HAS_FLAGS2)
{
GFC_INTEGER_4 cf2 = iqp->flags2;
if ((cf2 & IOPARM_INQUIRE_HAS_ENCODING) != 0)
{
if (u == NULL || u->flags.form != FORM_FORMATTED)
p = undefined;
else
switch (u->flags.encoding)
{
case ENCODING_DEFAULT:
p = "UNKNOWN";
break;
case ENCODING_UTF8:
p = "UTF-8";
break;
default:
internal_error (&iqp->common, "inquire_via_unit(): Bad encoding");
}
cf_strcpy (iqp->encoding, iqp->encoding_len, p);
}
if ((cf2 & IOPARM_INQUIRE_HAS_DECIMAL) != 0)
{
if (u == NULL || u->flags.form != FORM_FORMATTED)
p = undefined;
else
switch (u->flags.decimal)
{
case DECIMAL_POINT:
p = "POINT";
break;
case DECIMAL_COMMA:
p = "COMMA";
break;
default:
internal_error (&iqp->common, "inquire_via_unit(): Bad comma");
}
cf_strcpy (iqp->decimal, iqp->decimal_len, p);
}
if ((cf2 & IOPARM_INQUIRE_HAS_ASYNCHRONOUS) != 0)
{
if (u == NULL)
p = undefined;
else
{
switch (u->flags.async)
{
case ASYNC_YES:
p = yes;
break;
case ASYNC_NO:
p = no;
break;
default:
internal_error (&iqp->common, "inquire_via_unit(): Bad async");
}
}
cf_strcpy (iqp->asynchronous, iqp->asynchronous_len, p);
}
if ((cf2 & IOPARM_INQUIRE_HAS_PENDING) != 0)
{
if (!ASYNC_IO || u->au == NULL)
*(iqp->pending) = 0;
else
{
LOCK (&(u->au->lock));
if ((cf2 & IOPARM_INQUIRE_HAS_ID) != 0)
{
int id;
id = *(iqp->id);
*(iqp->pending) = id > u->au->id.low;
}
else
{
*(iqp->pending) = ! u->au->empty;
}
UNLOCK (&(u->au->lock));
}
}
if ((cf2 & IOPARM_INQUIRE_HAS_SIGN) != 0)
{
if (u == NULL)
p = undefined;
else
switch (u->flags.sign)
{
case SIGN_PROCDEFINED:
p = "PROCESSOR_DEFINED";
break;
case SIGN_SUPPRESS:
p = "SUPPRESS";
break;
case SIGN_PLUS:
p = "PLUS";
break;
default:
internal_error (&iqp->common, "inquire_via_unit(): Bad sign");
}
cf_strcpy (iqp->sign, iqp->sign_len, p);
}
if ((cf2 & IOPARM_INQUIRE_HAS_ROUND) != 0)
{
if (u == NULL)
p = undefined;
else
switch (u->flags.round)
{
case ROUND_UP:
p = "UP";
break;
case ROUND_DOWN:
p = "DOWN";
break;
case ROUND_ZERO:
p = "ZERO";
break;
case ROUND_NEAREST:
p = "NEAREST";
break;
case ROUND_COMPATIBLE:
p = "COMPATIBLE";
break;
case ROUND_PROCDEFINED:
p = "PROCESSOR_DEFINED";
break;
default:
internal_error (&iqp->common, "inquire_via_unit(): Bad round");
}
cf_strcpy (iqp->round, iqp->round_len, p);
}
if ((cf2 & IOPARM_INQUIRE_HAS_SIZE) != 0)
{
if (u == NULL)
*iqp->size = -1;
else
{
sflush (u->s);
*iqp->size = ssize (u->s);
}
}
if ((cf2 & IOPARM_INQUIRE_HAS_IQSTREAM) != 0)
{
if (u == NULL)
p = "UNKNOWN";
else
switch (u->flags.access)
{
case ACCESS_SEQUENTIAL:
case ACCESS_DIRECT:
p = no;
break;
case ACCESS_STREAM:
p = yes;
break;
default:
internal_error (&iqp->common, "inquire_via_unit(): Bad pad");
}
cf_strcpy (iqp->iqstream, iqp->iqstream_len, p);
}
if ((cf2 & IOPARM_INQUIRE_HAS_SHARE) != 0)
{
if (u == NULL)
p = "UNKNOWN";
else
switch (u->flags.share)
{
case SHARE_DENYRW:
p = "DENYRW";
break;
case SHARE_DENYNONE:
p = "DENYNONE";
break;
case SHARE_UNSPECIFIED:
p = "NODENY";
break;
default:
internal_error (&iqp->common,
"inquire_via_unit(): Bad share");
break;
}
cf_strcpy (iqp->share, iqp->share_len, p);
}
if ((cf2 & IOPARM_INQUIRE_HAS_CC) != 0)
{
if (u == NULL)
p = "UNKNOWN";
else
switch (u->flags.cc)
{
case CC_FORTRAN:
p = "FORTRAN";
break;
case CC_LIST:
p = "LIST";
break;
case CC_NONE:
p = "NONE";
break;
case CC_UNSPECIFIED:
p = "UNKNOWN";
break;
default:
internal_error (&iqp->common, "inquire_via_unit(): Bad cc");
break;
}
cf_strcpy (iqp->cc, iqp->cc_len, p);
}
}
if ((cf & IOPARM_INQUIRE_HAS_POSITION) != 0)
{
if (u == NULL || u->flags.access == ACCESS_DIRECT)
p = undefined;
else
{
/* If the position is unspecified, check if we can figure
out whether it's at the beginning or end. */
if (u->flags.position == POSITION_UNSPECIFIED)
{
gfc_offset cur = stell (u->s);
if (cur == 0)
u->flags.position = POSITION_REWIND;
else if (cur != -1 && (ssize (u->s) == cur))
u->flags.position = POSITION_APPEND;
}
switch (u->flags.position)
{
case POSITION_REWIND:
p = "REWIND";
break;
case POSITION_APPEND:
p = "APPEND";
break;
case POSITION_ASIS:
p = "ASIS";
break;
default:
/* If the position has changed and is not rewind or
append, it must be set to a processor-dependent
value. */
p = "UNSPECIFIED";
break;
}
}
cf_strcpy (iqp->position, iqp->position_len, p);
}
if ((cf & IOPARM_INQUIRE_HAS_ACTION) != 0)
{
if (u == NULL)
p = undefined;
else
switch (u->flags.action)
{
case ACTION_READ:
p = "READ";
break;
case ACTION_WRITE:
p = "WRITE";
break;
case ACTION_READWRITE:
p = "READWRITE";
break;
default:
internal_error (&iqp->common, "inquire_via_unit(): Bad action");
}
cf_strcpy (iqp->action, iqp->action_len, p);
}
if ((cf & IOPARM_INQUIRE_HAS_READ) != 0)
{
p = (!u || u->flags.action == ACTION_WRITE) ? no : yes;
cf_strcpy (iqp->read, iqp->read_len, p);
}
if ((cf & IOPARM_INQUIRE_HAS_WRITE) != 0)
{
p = (!u || u->flags.action == ACTION_READ) ? no : yes;
cf_strcpy (iqp->write, iqp->write_len, p);
}
if ((cf & IOPARM_INQUIRE_HAS_READWRITE) != 0)
{
p = (!u || u->flags.action != ACTION_READWRITE) ? no : yes;
cf_strcpy (iqp->readwrite, iqp->readwrite_len, p);
}
if ((cf & IOPARM_INQUIRE_HAS_DELIM) != 0)
{
if (u == NULL || u->flags.form != FORM_FORMATTED)
p = undefined;
else
switch (u->flags.delim)
{
case DELIM_NONE:
case DELIM_UNSPECIFIED:
p = "NONE";
break;
case DELIM_QUOTE:
p = "QUOTE";
break;
case DELIM_APOSTROPHE:
p = "APOSTROPHE";
break;
default:
internal_error (&iqp->common, "inquire_via_unit(): Bad delim");
}
cf_strcpy (iqp->delim, iqp->delim_len, p);
}
if ((cf & IOPARM_INQUIRE_HAS_PAD) != 0)
{
if (u == NULL || u->flags.form != FORM_FORMATTED)
p = undefined;
else
switch (u->flags.pad)
{
case PAD_NO:
p = no;
break;
case PAD_YES:
p = yes;
break;
default:
internal_error (&iqp->common, "inquire_via_unit(): Bad pad");
}
cf_strcpy (iqp->pad, iqp->pad_len, p);
}
if ((cf & IOPARM_INQUIRE_HAS_CONVERT) != 0)
{
if (u == NULL)
p = undefined;
else
switch (u->flags.convert)
{
case GFC_CONVERT_NATIVE:
p = __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ ? "BIG_ENDIAN" : "LITTLE_ENDIAN";
break;
case GFC_CONVERT_SWAP:
p = __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ ? "LITTLE_ENDIAN" : "BIG_ENDIAN";
break;
#ifdef HAVE_GFC_REAL_17
case GFC_CONVERT_NATIVE | GFC_CONVERT_R16_IEEE:
p = __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ ? "BIG_ENDIAN,R16_IEEE" : "LITTLE_ENDIAN,R16_IEEE";
break;
case GFC_CONVERT_SWAP | GFC_CONVERT_R16_IEEE:
p = __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ ? "LITTLE_ENDIAN,R16_IEEE" : "BIG_ENDIAN,R16_IEEE";
break;
case GFC_CONVERT_NATIVE | GFC_CONVERT_R16_IBM:
p = __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ ? "BIG_ENDIAN,R16_IBM" : "LITTLE_ENDIAN,R16_IBM";
break;
case GFC_CONVERT_SWAP | GFC_CONVERT_R16_IBM:
p = __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ ? "LITTLE_ENDIAN,R16_IBM" : "BIG_ENDIAN,R16_IBM";
break;
#endif
default:
internal_error (&iqp->common, "inquire_via_unit(): Bad convert");
}
cf_strcpy (iqp->convert, iqp->convert_len, p);
}
}
/* inquire_via_filename()-- Inquiry via filename. This subroutine is
only used if the filename is *not* connected to a unit number. */
static void
inquire_via_filename (st_parameter_inquire *iqp)
{
const char *p;
GFC_INTEGER_4 cf = iqp->common.flags;
if ((cf & IOPARM_INQUIRE_HAS_EXIST) != 0)
*iqp->exist = file_exists (iqp->file, iqp->file_len);
if ((cf & IOPARM_INQUIRE_HAS_OPENED) != 0)
*iqp->opened = 0;
if ((cf & IOPARM_INQUIRE_HAS_NUMBER) != 0)
*iqp->number = -1;
if ((cf & IOPARM_INQUIRE_HAS_NAMED) != 0)
*iqp->named = 1;
if ((cf & IOPARM_INQUIRE_HAS_NAME) != 0)
fstrcpy (iqp->name, iqp->name_len, iqp->file, iqp->file_len);
if ((cf & IOPARM_INQUIRE_HAS_ACCESS) != 0)
cf_strcpy (iqp->access, iqp->access_len, undefined);
if ((cf & IOPARM_INQUIRE_HAS_SEQUENTIAL) != 0)
{
p = "UNKNOWN";
cf_strcpy (iqp->sequential, iqp->sequential_len, p);
}
if ((cf & IOPARM_INQUIRE_HAS_DIRECT) != 0)
{
p = "UNKNOWN";
cf_strcpy (iqp->direct, iqp->direct_len, p);
}
if ((cf & IOPARM_INQUIRE_HAS_FORM) != 0)
cf_strcpy (iqp->form, iqp->form_len, undefined);
if ((cf & IOPARM_INQUIRE_HAS_FORMATTED) != 0)
{
p = "UNKNOWN";
cf_strcpy (iqp->formatted, iqp->formatted_len, p);
}
if ((cf & IOPARM_INQUIRE_HAS_UNFORMATTED) != 0)
{
p = "UNKNOWN";
cf_strcpy (iqp->unformatted, iqp->unformatted_len, p);
}
if ((cf & IOPARM_INQUIRE_HAS_RECL_OUT) != 0)
/* F2018 (N2137) 12.10.2.26: If there is no connection, recl is
assigned the value -1. */
*iqp->recl_out = -1;
if ((cf & IOPARM_INQUIRE_HAS_NEXTREC) != 0)
*iqp->nextrec = 0;
if ((cf & IOPARM_INQUIRE_HAS_BLANK) != 0)
cf_strcpy (iqp->blank, iqp->blank_len, undefined);
if ((cf & IOPARM_INQUIRE_HAS_PAD) != 0)
cf_strcpy (iqp->pad, iqp->pad_len, undefined);
if (cf & IOPARM_INQUIRE_HAS_FLAGS2)
{
GFC_INTEGER_4 cf2 = iqp->flags2;
if ((cf2 & IOPARM_INQUIRE_HAS_ENCODING) != 0)
cf_strcpy (iqp->encoding, iqp->encoding_len, undefined);
if ((cf2 & IOPARM_INQUIRE_HAS_DELIM) != 0)
cf_strcpy (iqp->delim, iqp->delim_len, undefined);
if ((cf2 & IOPARM_INQUIRE_HAS_DECIMAL) != 0)
cf_strcpy (iqp->decimal, iqp->decimal_len, undefined);
if ((cf2 & IOPARM_INQUIRE_HAS_DELIM) != 0)
cf_strcpy (iqp->delim, iqp->delim_len, undefined);
if ((cf2 & IOPARM_INQUIRE_HAS_PAD) != 0)
cf_strcpy (iqp->pad, iqp->pad_len, undefined);
if ((cf2 & IOPARM_INQUIRE_HAS_ENCODING) != 0)
cf_strcpy (iqp->encoding, iqp->encoding_len, undefined);
if ((cf2 & IOPARM_INQUIRE_HAS_SIZE) != 0)
*iqp->size = file_size (iqp->file, iqp->file_len);
if ((cf2 & IOPARM_INQUIRE_HAS_IQSTREAM) != 0)
cf_strcpy (iqp->iqstream, iqp->iqstream_len, "UNKNOWN");
if ((cf2 & IOPARM_INQUIRE_HAS_SHARE) != 0)
cf_strcpy (iqp->share, iqp->share_len, "UNKNOWN");
if ((cf2 & IOPARM_INQUIRE_HAS_CC) != 0)
cf_strcpy (iqp->cc, iqp->cc_len, "UNKNOWN");
}
if ((cf & IOPARM_INQUIRE_HAS_POSITION) != 0)
cf_strcpy (iqp->position, iqp->position_len, undefined);
if ((cf & IOPARM_INQUIRE_HAS_ACCESS) != 0)
cf_strcpy (iqp->access, iqp->access_len, undefined);
if ((cf & IOPARM_INQUIRE_HAS_READ) != 0)
{
p = inquire_read (iqp->file, iqp->file_len);
cf_strcpy (iqp->read, iqp->read_len, p);
}
if ((cf & IOPARM_INQUIRE_HAS_WRITE) != 0)
{
p = inquire_write (iqp->file, iqp->file_len);
cf_strcpy (iqp->write, iqp->write_len, p);
}
if ((cf & IOPARM_INQUIRE_HAS_READWRITE) != 0)
{
p = inquire_read (iqp->file, iqp->file_len);
cf_strcpy (iqp->readwrite, iqp->readwrite_len, p);
}
}
/* Library entry point for the INQUIRE statement (non-IOLENGTH
form). */
extern void st_inquire (st_parameter_inquire *);
export_proto(st_inquire);
void
st_inquire (st_parameter_inquire *iqp)
{
gfc_unit *u;
library_start (&iqp->common);
if ((iqp->common.flags & IOPARM_INQUIRE_HAS_FILE) == 0)
{
u = find_unit (iqp->common.unit);
inquire_via_unit (iqp, u);
}
else
{
u = find_file (iqp->file, iqp->file_len);
if (u == NULL)
inquire_via_filename (iqp);
else
inquire_via_unit (iqp, u);
}
if (u != NULL)
unlock_unit (u);
library_end ();
}
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