1 /* PSPP - computes sample statistics.
2 Copyright (C) 1997-9, 2000 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 This program is distributed in the hope that it will be useful, but
10 WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 #include <data/procedure.h>
24 #include <data/dictionary.h>
25 #include <data/variable.h>
26 #include <language/command.h>
27 #include <language/lexer/lexer.h>
28 #include <language/lexer/variable-parser.h>
29 #include <libpspp/message.h>
30 #include <libpspp/str.h>
33 #define _(msgid) gettext (msgid)
36 cmd_weight (struct lexer *lexer, struct dataset *ds)
38 struct dictionary *dict = dataset_dict (ds);
39 if (lex_match_id (lexer, "OFF"))
40 dict_set_weight (dataset_dict (ds), NULL);
45 lex_match (lexer, T_BY);
46 v = parse_variable (lexer, dict);
48 return CMD_CASCADING_FAILURE;
51 msg (SE, _("The weighting variable must be numeric."));
52 return CMD_CASCADING_FAILURE;
54 if (dict_class_from_id (var_get_name (v)) == DC_SCRATCH)
56 msg (SE, _("The weighting variable may not be scratch."));
57 return CMD_CASCADING_FAILURE;
60 dict_set_weight (dict, v);
63 return lex_end_of_command (lexer);