/* PSPP - a program for statistical analysis.
- Copyright (C) 1997-9, 2000, 2006, 2010 Free Software Foundation, Inc.
+ Copyright (C) 1997-9, 2000, 2006, 2010, 2011 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
#include <limits.h>
#include <errno.h>
#include <stdlib.h>
-#include <data/file-name.h>
-#include <language/command.h>
-#include <language/data-io/file-handle.h>
-#include <language/lexer/lexer.h>
-#include <libpspp/assertion.h>
-#include <libpspp/message.h>
-#include <libpspp/str.h>
-#include <data/variable.h>
-#include <data/file-handle-def.h>
-
-#include "xalloc.h"
+
+#include "data/file-name.h"
+#include "data/session.h"
+#include "language/command.h"
+#include "language/data-io/file-handle.h"
+#include "language/lexer/lexer.h"
+#include "libpspp/assertion.h"
+#include "libpspp/message.h"
+#include "libpspp/str.h"
+#include "data/variable.h"
+#include "data/file-handle-def.h"
+
+#include "gl/xalloc.h"
#include "gettext.h"
#define _(msgid) gettext (msgid)
name=string;
lrecl=integer;
tabwidth=integer "x>=0" "%s must be nonnegative";
- mode=mode:!character/binary/image/360/scratch;
+ mode=mode:!character/binary/image/360;
recform=recform:fixed/f/variable/v/spanned/vs.
*/
/* (declarations) */
int
cmd_file_handle (struct lexer *lexer, struct dataset *ds)
{
- char handle_name[VAR_NAME_LEN + 1];
+ struct fh_properties properties;
struct cmd_file_handle cmd;
struct file_handle *handle;
+ enum cmd_result result;
+ char *handle_name;
+ result = CMD_CASCADING_FAILURE;
if (!lex_force_id (lexer))
- return CMD_CASCADING_FAILURE;
- str_copy_trunc (handle_name, sizeof handle_name, lex_tokcstr (lexer));
+ goto exit;
+ 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 (lexer);
if (!lex_force_match (lexer, T_SLASH))
- return CMD_CASCADING_FAILURE;
+ goto exit_free_handle_name;
if (!parse_file_handle (lexer, ds, &cmd, NULL))
- return CMD_CASCADING_FAILURE;
+ goto exit_free_handle_name;
if (lex_end_of_command (lexer) != CMD_SUCCESS)
- goto lossage;
+ goto exit_free_cmd;
- if (cmd.mode != FH_SCRATCH)
+ properties = *fh_default_properties ();
+ if (cmd.s_name == NULL)
{
- struct fh_properties properties = *fh_default_properties ();
+ lex_sbc_missing (lexer, "NAME");
+ goto exit_free_cmd;
+ }
- if (cmd.s_name == NULL)
+ switch (cmd.mode)
+ {
+ case FH_CHARACTER:
+ properties.mode = FH_MODE_TEXT;
+ if (cmd.sbc_tabwidth)
+ properties.tab_width = cmd.n_tabwidth[0];
+ break;
+ case FH_IMAGE:
+ properties.mode = FH_MODE_FIXED;
+ break;
+ case FH_BINARY:
+ properties.mode = FH_MODE_VARIABLE;
+ break;
+ case FH_360:
+ properties.encoding = "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)
{
- lex_sbc_missing (lexer, "NAME");
- goto lossage;
+ properties.mode = FH_MODE_360_VARIABLE;
+ properties.record_width = 8192;
}
-
- switch (cmd.mode)
+ else if (cmd.recform == FH_SPANNED || cmd.recform == FH_VS)
{
- case FH_CHARACTER:
- properties.mode = FH_MODE_TEXT;
- if (cmd.sbc_tabwidth)
- properties.tab_width = cmd.n_tabwidth[0];
- break;
- case FH_IMAGE:
- properties.mode = FH_MODE_FIXED;
- break;
- case FH_BINARY:
- properties.mode = FH_MODE_VARIABLE;
- break;
- case FH_360:
- properties.encoding = "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
- {
- msg (SE, _("RECFORM must be specified with MODE=360."));
- goto lossage;
- }
- break;
- default:
- NOT_REACHED ();
+ properties.mode = FH_MODE_360_SPANNED;
+ properties.record_width = 8192;
}
-
- if (properties.mode == FH_MODE_FIXED || cmd.n_lrecl[0] != LONG_MIN)
+ else
{
- 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 %d-character records."),
- cmd.n_lrecl[0], (1UL << 31) - 1, properties.record_width);
- 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 ();
+ }
- fh_create_file (handle_name, cmd.s_name, &properties);
+ 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];
}
- else
- fh_create_scratch (handle_name);
- free_file_handle (&cmd);
- return CMD_SUCCESS;
+ fh_create_file (handle_name, cmd.s_name, &properties);
+
+ result = CMD_SUCCESS;
- lossage:
+exit_free_cmd:
free_file_handle (&cmd);
- return CMD_CASCADING_FAILURE;
+exit_free_handle_name:
+ free (handle_name);
+exit:
+ return result;
}
int
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.
- The caller is responsible for fh_unref()'ing the returned
- file handle when it is no longer needed. */
+ - 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 (struct lexer *lexer, enum fh_referent referent_mask)
+fh_parse (struct lexer *lexer, enum fh_referent referent_mask,
+ struct session *session)
{
struct file_handle *handle;
+ 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
if (lex_token (lexer) == T_ID)
handle = fh_from_id (lex_tokcstr (lexer));
if (handle == NULL)
- {
- if (lex_token (lexer) != T_ID || lex_tokcstr (lexer)[0] != '#'
- || settings_get_syntax () != ENHANCED)
handle = fh_create_file (NULL, lex_tokcstr (lexer),
fh_default_properties ());
- else
- handle = fh_create_scratch (lex_tokcstr (lexer));
- }
lex_get (lexer);
}
projects / pspp-builds.git / blobdiff