1 /* PSPP - computes sample statistics.
2 Copyright (C) 2006 Free Software Foundation, Inc.
3 Written by Ben Pfaff <blp@gnu.org>.
5 This program is free software; you can redistribute it and/or
6 modify it under the terms of the GNU General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 This program is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
25 #include <data/procedure.h>
26 #include <data/value.h>
27 #include <language/command.h>
28 #include <language/data-io/data-writer.h>
29 #include <language/data-io/file-handle.h>
30 #include <language/expressions/public.h>
31 #include <language/lexer/lexer.h>
32 #include <output/manager.h>
33 #include <libpspp/message.h>
38 #define _(msgid) gettext (msgid)
40 /* PRINT SPACE transformation. */
41 struct print_space_trns
43 struct dfm_writer *writer; /* Output data file. */
44 struct expression *expr; /* Number of lines; NULL means 1. */
47 static trns_proc_func print_space_trns_proc;
48 static trns_free_func print_space_trns_free;
51 cmd_print_space (struct lexer *lexer, struct dataset *ds)
53 struct print_space_trns *trns;
54 struct file_handle *handle;
55 struct expression *expr;
56 struct dfm_writer *writer;
58 if (lex_match_id (lexer, "OUTFILE"))
60 lex_match (lexer, '=');
62 handle = fh_parse (lexer, FH_REF_FILE);
70 if (lex_token (lexer) != '.')
72 expr = expr_parse (lexer, ds, EXPR_NUMBER);
73 if (lex_token (lexer) != '.')
76 lex_error (lexer, _("expecting end of command"));
85 writer = dfm_open_writer (handle);
95 trns = xmalloc (sizeof *trns);
96 trns->writer = writer;
99 add_transformation (ds,
100 print_space_trns_proc, print_space_trns_free, trns);
104 /* Executes a PRINT SPACE transformation. */
106 print_space_trns_proc (void *t_, struct ccase *c,
107 casenumber case_num UNUSED)
109 struct print_space_trns *trns = t_;
115 double f = expr_evaluate_num (trns->expr, c, case_num);
117 msg (SW, _("The expression on PRINT SPACE evaluated to the "
118 "system-missing value."));
119 else if (f < 0 || f > INT_MAX)
120 msg (SW, _("The expression on PRINT SPACE evaluated to %g."), f);
126 if (trns->writer == NULL)
129 dfm_put_record (trns->writer, " ", 1);
131 if (trns->writer != NULL && dfm_write_error (trns->writer))
133 return TRNS_CONTINUE;
136 /* Frees a PRINT SPACE transformation.
137 Returns true if successful, false if an I/O error occurred. */
139 print_space_trns_free (void *trns_)
141 struct print_space_trns *trns = trns_;
142 bool ok = dfm_close_writer (trns->writer);
143 expr_free (trns->expr);