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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libgfortran/] [io/] [inquire.c] - Rev 734
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/* Copyright (C) 2002, 2003, 2005, 2007, 2009, 2010, 2011 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 "unix.h" #include <string.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) { #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. */ fstrcpy (iqp->name, iqp->name_len, u->file, u->file_len); } else fstrcpy (iqp->name, iqp->name_len, u->file, u->file_len); #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 fstrcpy (iqp->name, iqp->name_len, u->file, u->file_len); #else fstrcpy (iqp->name, iqp->name_len, u->file, u->file_len); #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) *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 ((cf2 & IOPARM_INQUIRE_HAS_SIZE) != 0) { if (u == NULL) *iqp->size = -1; else { sflush (u->s); *iqp->size = ssize (u->s); } } } 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 == 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 ((cf2 & IOPARM_INQUIRE_HAS_SIZE) != 0) *iqp->size = file_size (iqp->file, iqp->file_len); } 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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