/* 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 . */ /* Implement the non-IOLENGTH variant of the INQUIRY statement */ #include "io.h" #include "async.h" #include "unix.h" #include 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 (); }