-/* PSPP - computes sample statistics.
- Copyright (C) 1997-9, 2000, 2006 Free Software Foundation, Inc.
- Written by Ben Pfaff <blp@gnu.org>.
+/* PSPP - a program for statistical analysis.
+ Copyright (C) 1997-9, 2000, 2006, 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
- This program 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 of the
- License, or (at your option) any later version.
+ This program 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 of the License, or
+ (at your option) any later version.
- This program 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.
+ This program 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 this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
-#include <language/data-io/file-handle.h>
-#include <libpspp/message.h>
+
+#include "data/file-handle-def.h"
+
+#include <limits.h>
#include <errno.h>
#include <stdlib.h>
-#include <libpspp/alloc.h>
-#include <data/file-name.h>
-#include <language/command.h>
-#include <language/lexer/lexer.h>
-#include <language/line-buffer.h>
-#include <libpspp/assertion.h>
-#include <libpspp/message.h>
-#include <libpspp/magic.h>
-#include <libpspp/str.h>
-#include <data/variable.h>
-#include <data/file-handle-def.h>
+
+#include "data/file-name.h"
+#include "data/session.h"
+#include "data/variable.h"
+#include "language/command.h"
+#include "language/data-io/file-handle.h"
+#include "language/lexer/lexer.h"
+#include "libpspp/assertion.h"
+#include "libpspp/cast.h"
+#include "libpspp/message.h"
+#include "libpspp/str.h"
+
+#include "gl/xalloc.h"
#include "gettext.h"
#define _(msgid) gettext (msgid)
"FILE HANDLE" (fh_):
name=string;
lrecl=integer;
- tabwidth=integer "x>=0" "%s must be nonnegative";
- mode=mode:!character/image/scratch.
+ tabwidth=integer;
+ mode=mode:!character/binary/image/360;
+ ends=ends:lf/crlf;
+ recform=recform:fixed/f/variable/v/spanned/vs;
+ encoding=string.
*/
/* (declarations) */
/* (functions) */
int
-cmd_file_handle (struct dataset *ds)
+cmd_file_handle (struct lexer *lexer, struct dataset *ds)
{
- char handle_name[LONG_NAME_LEN + 1];
- struct fh_properties properties = *fh_default_properties ();
-
+ struct fh_properties properties;
struct cmd_file_handle cmd;
struct file_handle *handle;
+ enum cmd_result result;
+ char *handle_name;
- if (!lex_force_id ())
- return CMD_CASCADING_FAILURE;
- str_copy_trunc (handle_name, sizeof handle_name, tokid);
+ result = CMD_CASCADING_FAILURE;
+ if (!lex_force_id (lexer))
+ goto exit;
- handle = fh_from_name (handle_name);
+ handle_name = xstrdup (lex_tokcstr (lexer));
+ handle = fh_from_id (handle_name);
if (handle != NULL)
{
msg (SE, _("File handle %s is already defined. "
"Use CLOSE FILE HANDLE before redefining a file handle."),
handle_name);
- return CMD_CASCADING_FAILURE;
+ goto exit_free_handle_name;
}
- lex_get ();
- if (!lex_force_match ('/'))
- return CMD_CASCADING_FAILURE;
+ lex_get (lexer);
+ if (!lex_force_match (lexer, T_SLASH))
+ goto exit_free_handle_name;
- if (!parse_file_handle (ds, &cmd, NULL))
- return CMD_CASCADING_FAILURE;
+ if (!parse_file_handle (lexer, ds, &cmd, NULL))
+ goto exit_free_handle_name;
- if (lex_end_of_command () != CMD_SUCCESS)
- goto lossage;
+ if (lex_end_of_command (lexer) != CMD_SUCCESS)
+ goto exit_free_cmd;
- if (cmd.s_name == NULL && cmd.mode != FH_SCRATCH)
+ properties = *fh_default_properties ();
+ if (cmd.s_name == NULL)
{
lex_sbc_missing ("NAME");
- goto lossage;
+ goto exit_free_cmd;
}
switch (cmd.mode)
case FH_CHARACTER:
properties.mode = FH_MODE_TEXT;
if (cmd.sbc_tabwidth)
- properties.tab_width = cmd.n_tabwidth[0];
+ {
+ if (cmd.n_tabwidth[0] >= 0)
+ properties.tab_width = cmd.n_tabwidth[0];
+ else
+ msg (SE, _("%s must not be negative."), "TABWIDTH");
+ }
+ if (cmd.ends == FH_LF)
+ properties.line_ends = FH_END_LF;
+ else if (cmd.ends == FH_CRLF)
+ properties.line_ends = FH_END_CRLF;
break;
case FH_IMAGE:
- properties.mode = FH_MODE_BINARY;
- if (cmd.n_lrecl[0] == NOT_LONG)
- msg (SE, _("Fixed-length records were specified on /RECFORM, but "
- "record length was not specified on /LRECL. "
- "Assuming %d-character records."),
- properties.record_width);
- else if (cmd.n_lrecl[0] < 1)
- msg (SE, _("Record length (%ld) must be at least one byte. "
- "Assuming %d-character records."),
- cmd.n_lrecl[0], properties.record_width);
+ properties.mode = FH_MODE_FIXED;
+ break;
+ case FH_BINARY:
+ properties.mode = FH_MODE_VARIABLE;
+ break;
+ case FH_360:
+ properties.encoding = CONST_CAST (char *, "EBCDIC-US");
+ if (cmd.recform == FH_FIXED || cmd.recform == FH_F)
+ properties.mode = FH_MODE_FIXED;
+ else if (cmd.recform == FH_VARIABLE || cmd.recform == FH_V)
+ {
+ properties.mode = FH_MODE_360_VARIABLE;
+ properties.record_width = 8192;
+ }
+ else if (cmd.recform == FH_SPANNED || cmd.recform == FH_VS)
+ {
+ properties.mode = FH_MODE_360_SPANNED;
+ properties.record_width = 8192;
+ }
else
- properties.record_width = cmd.n_lrecl[0];
+ {
+ msg (SE, _("RECFORM must be specified with MODE=360."));
+ goto exit_free_cmd;
+ }
break;
default:
NOT_REACHED ();
}
- if (cmd.mode != FH_SCRATCH)
- fh_create_file (handle_name, cmd.s_name, &properties);
- else
- fh_create_scratch (handle_name);
+ if (properties.mode == FH_MODE_FIXED || cmd.n_lrecl[0] != LONG_MIN)
+ {
+ if (cmd.n_lrecl[0] == LONG_MIN)
+ msg (SE, _("The specified file mode requires LRECL. "
+ "Assuming %zu-character records."),
+ properties.record_width);
+ else if (cmd.n_lrecl[0] < 1 || cmd.n_lrecl[0] >= (1UL << 31))
+ msg (SE, _("Record length (%ld) must be between 1 and %lu bytes. "
+ "Assuming %zu-character records."),
+ cmd.n_lrecl[0], (1UL << 31) - 1, properties.record_width);
+ else
+ properties.record_width = cmd.n_lrecl[0];
+ }
- free_file_handle (&cmd);
- return CMD_SUCCESS;
+ if (cmd.s_encoding != NULL)
+ properties.encoding = cmd.s_encoding;
+
+ fh_create_file (handle_name, cmd.s_name, &properties);
- lossage:
+ result = CMD_SUCCESS;
+
+exit_free_cmd:
free_file_handle (&cmd);
- return CMD_CASCADING_FAILURE;
+exit_free_handle_name:
+ free (handle_name);
+exit:
+ return result;
}
int
-cmd_close_file_handle (struct dataset *ds UNUSED)
+cmd_close_file_handle (struct lexer *lexer, struct dataset *ds UNUSED)
{
struct file_handle *handle;
- if (!lex_force_id ())
+ if (!lex_force_id (lexer))
return CMD_CASCADING_FAILURE;
- handle = fh_from_name (tokid);
+ handle = fh_from_id (lex_tokcstr (lexer));
if (handle == NULL)
return CMD_CASCADING_FAILURE;
- fh_free (handle);
-
+ fh_unname (handle);
return CMD_SUCCESS;
}
/* Returns the name for REFERENT. */
static const char *
-referent_name (enum fh_referent referent)
+referent_name (enum fh_referent referent)
{
- switch (referent)
+ switch (referent)
{
case FH_REF_FILE:
return _("file");
case FH_REF_INLINE:
return _("inline file");
- case FH_REF_SCRATCH:
- return _("scratch file");
+ case FH_REF_DATASET:
+ return _("dataset");
default:
NOT_REACHED ();
}
}
-/* Parses a file handle name, which may be a file name as a string
- or a file handle name as an identifier. The allowed types of
- file handle are restricted to those in REFERENT_MASK. Returns
- the file handle when successful, a null pointer on failure. */
+/* Parses a file handle name:
+
+ - If SESSION is nonnull, then the parsed syntax may be the name of a
+ dataset within SESSION. Dataset names take precedence over file handle
+ names.
+
+ - If REFERENT_MASK includes FH_REF_FILE, the parsed syntax may be a file
+ name as a string or a file handle name as an identifier.
+
+ - If REFERENT_MASK includes FH_REF_INLINE, the parsed syntax may be the
+ identifier INLINE to represent inline data.
+
+ Returns the file handle when successful, a null pointer on failure.
+
+ The caller is responsible for fh_unref()'ing the returned file handle when
+ it is no longer needed. */
struct file_handle *
-fh_parse (enum fh_referent referent_mask)
+fh_parse (struct lexer *lexer, enum fh_referent referent_mask,
+ struct session *session)
{
struct file_handle *handle;
- if (lex_match_id ("INLINE"))
+ if (session != NULL && lex_token (lexer) == T_ID)
+ {
+ struct dataset *ds;
+
+ ds = session_lookup_dataset (session, lex_tokcstr (lexer));
+ if (ds != NULL)
+ {
+ lex_get (lexer);
+ return fh_create_dataset (ds);
+ }
+ }
+
+ if (lex_match_id (lexer, "INLINE"))
handle = fh_inline_file ();
- else
+ else
{
- if (token != T_ID && token != T_STRING)
+ if (lex_token (lexer) != T_ID && !lex_is_string (lexer))
{
- lex_error (_("expecting a file name or handle name"));
+ lex_error (lexer, _("expecting a file name or handle name"));
return NULL;
}
handle = NULL;
- if (token == T_ID)
- handle = fh_from_name (tokid);
- if (handle == NULL)
- handle = fh_from_file_name (ds_cstr (&tokstr));
+ if (lex_token (lexer) == T_ID)
+ handle = fh_from_id (lex_tokcstr (lexer));
if (handle == NULL)
- {
- if (token != T_ID || tokid[0] != '#' || get_syntax () != ENHANCED)
- {
- char *file_name = ds_cstr (&tokstr);
- char *handle_name = xasprintf ("\"%s\"", file_name);
- handle = fh_create_file (handle_name, file_name,
- fh_default_properties ());
- free (handle_name);
- }
- else
- handle = fh_create_scratch (tokid);
- }
- lex_get ();
+ handle = fh_create_file (NULL, lex_tokcstr (lexer),
+ fh_default_properties ());
+ lex_get (lexer);
}
- if (!(fh_get_referent (handle) & referent_mask))
+ if (!(fh_get_referent (handle) & referent_mask))
{
msg (SE, _("Handle for %s not allowed here."),
referent_name (fh_get_referent (handle)));
+ fh_unref (handle);
return NULL;
}