libgfortran/io/inquire.c - gcc - Git at Google

 /* Copyright (C) 2002, 2003, 2005, 2007, 2009 Free Software Foundation, Inc.
    Contributed by Andy Vaught

 This file is part of the GNU Fortran 95 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"


 static const char 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 ((cf & IOPARM_INQUIRE_HAS_EXIST) != 0)
     {
       *iqp->exist = (iqp->common.unit >= 0
 		     && iqp->common.unit <= GFC_INTEGER_4_HUGE);

       if ((cf & IOPARM_INQUIRE_HAS_FILE) == 0)
 	{
 	  if (!(*iqp->exist))
 	    *iqp->common.iostat = LIBERROR_BAD_UNIT;
 	  *iqp->exist = *iqp->exist
 			&& (*iqp->common.iostat != LIBERROR_BAD_UNIT);
 	}
     }

   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)
     fstrcpy (iqp->name, iqp->name_len, u->file, u->file_len);

   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)
     *iqp->recl_out = (u != NULL) ? u->recl : 0;

   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_PENDING) != 0)
 	*iqp->pending = 0;

       if ((cf2 & IOPARM_INQUIRE_HAS_ID) != 0)
         *iqp->id = 0;

       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_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 ((cf & IOPARM_INQUIRE_HAS_POSITION) != 0)
     {
       if (u == NULL || u->flags.access == ACCESS_DIRECT)
         p = undefined;
       else
         switch (u->flags.position)
           {
              case POSITION_REWIND:
                p = "REWIND";
                break;
              case POSITION_APPEND:
                p = "APPEND";
                break;
              case POSITION_ASIS:
                p = "ASIS";
                break;
              default:
                /* if not direct access, it must be
                   either REWIND, APPEND, or ASIS.
                   ASIS seems to be the best default */
                p = "ASIS";
                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 == NULL) ? inquire_read (NULL, 0) :
 	inquire_read (u->file, u->file_len);

       cf_strcpy (iqp->read, iqp->read_len, p);
     }

   if ((cf & IOPARM_INQUIRE_HAS_WRITE) != 0)
     {
       p = (u == NULL) ? inquire_write (NULL, 0) :
 	inquire_write (u->file, u->file_len);

       cf_strcpy (iqp->write, iqp->write_len, p);
     }

   if ((cf & IOPARM_INQUIRE_HAS_READWRITE) != 0)
     {
       p = (u == NULL) ? inquire_readwrite (NULL, 0) :
 	inquire_readwrite (u->file, u->file_len);

       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:
 	    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)
 	  {
 	    /*  big_endian is 0 for little-endian, 1 for big-endian.  */
 	  case GFC_CONVERT_NATIVE:
 	    p = big_endian ? "BIG_ENDIAN" : "LITTLE_ENDIAN";
 	    break;

 	  case GFC_CONVERT_SWAP:
 	    p = big_endian ? "LITTLE_ENDIAN" : "BIG_ENDIAN";
 	    break;

 	  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)
     *iqp->recl_out = 0;

   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 ((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 ();
 }
	/* Copyright (C) 2002, 2003, 2005, 2007, 2009 Free Software Foundation, Inc.
	Contributed by Andy Vaught

	This file is part of the GNU Fortran 95 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"


	static const char 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 ((cf & IOPARM_INQUIRE_HAS_EXIST) != 0)
	{
	*iqp->exist = (iqp->common.unit >= 0
	&& iqp->common.unit <= GFC_INTEGER_4_HUGE);

	if ((cf & IOPARM_INQUIRE_HAS_FILE) == 0)
	{
	if (!(*iqp->exist))
	*iqp->common.iostat = LIBERROR_BAD_UNIT;
	iqp->exist = iqp->exist
	&& (*iqp->common.iostat != LIBERROR_BAD_UNIT);
	}
	}

	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)
	fstrcpy (iqp->name, iqp->name_len, u->file, u->file_len);

	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)
	*iqp->recl_out = (u != NULL) ? u->recl : 0;

	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_PENDING) != 0)
	*iqp->pending = 0;

	if ((cf2 & IOPARM_INQUIRE_HAS_ID) != 0)
	*iqp->id = 0;

	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_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 ((cf & IOPARM_INQUIRE_HAS_POSITION) != 0)
	{
	if (u == NULL \|\| u->flags.access == ACCESS_DIRECT)
	p = undefined;
	else
	switch (u->flags.position)
	{
	case POSITION_REWIND:
	p = "REWIND";
	break;
	case POSITION_APPEND:
	p = "APPEND";
	break;
	case POSITION_ASIS:
	p = "ASIS";
	break;
	default:
	/* if not direct access, it must be
	either REWIND, APPEND, or ASIS.
	ASIS seems to be the best default */
	p = "ASIS";
	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 == NULL) ? inquire_read (NULL, 0) :
	inquire_read (u->file, u->file_len);

	cf_strcpy (iqp->read, iqp->read_len, p);
	}

	if ((cf & IOPARM_INQUIRE_HAS_WRITE) != 0)
	{
	p = (u == NULL) ? inquire_write (NULL, 0) :
	inquire_write (u->file, u->file_len);

	cf_strcpy (iqp->write, iqp->write_len, p);
	}

	if ((cf & IOPARM_INQUIRE_HAS_READWRITE) != 0)
	{
	p = (u == NULL) ? inquire_readwrite (NULL, 0) :
	inquire_readwrite (u->file, u->file_len);

	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:
	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)
	{
	/* big_endian is 0 for little-endian, 1 for big-endian. */
	case GFC_CONVERT_NATIVE:
	p = big_endian ? "BIG_ENDIAN" : "LITTLE_ENDIAN";
	break;

	case GFC_CONVERT_SWAP:
	p = big_endian ? "LITTLE_ENDIAN" : "BIG_ENDIAN";
	break;

	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)
	*iqp->recl_out = 0;

	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 ((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 ();
	}