1 /* PSPP - computes sample statistics.
2 Copyright (C) 1997-9, 2000 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
23 #include <libpspp/alloc.h>
24 #include <language/command.h>
25 #include <libpspp/message.h>
26 #include <libpspp/hash.h>
27 #include <language/lexer/lexer.h>
28 #include <libpspp/str.h>
29 #include <data/value-labels.h>
30 #include <data/variable.h>
33 #define _(msgid) gettext (msgid)
37 static int do_value_labels (int);
38 static int verify_val_labs (struct variable **vars, size_t var_cnt);
39 static void erase_labels (struct variable **vars, size_t var_cnt);
40 static int get_label (struct variable **vars, size_t var_cnt);
45 cmd_value_labels (void)
47 return do_value_labels (1);
51 cmd_add_value_labels (void)
53 return do_value_labels (0);
59 do_value_labels (int erase)
61 struct variable **vars; /* Variable list. */
62 size_t var_cnt; /* Number of variables. */
63 int parse_err=0; /* true if error parsing variables */
69 parse_err = !parse_variables (default_dict, &vars, &var_cnt,
76 if (!verify_val_labs (vars, var_cnt))
79 erase_labels (vars, var_cnt);
80 while (token != '/' && token != '.')
81 if (!get_label (vars, var_cnt))
98 return lex_end_of_command ();
105 /* Verifies that none of the VAR_CNT variables in VARS are long
108 verify_val_labs (struct variable **vars, size_t var_cnt)
112 for (i = 0; i < var_cnt; i++)
114 struct variable *vp = vars[i];
116 if (vp->type == ALPHA && vp->width > MAX_SHORT_STRING)
118 msg (SE, _("It is not possible to assign value labels to long "
119 "string variables such as %s."), vp->name);
126 /* Erases all the labels for the VAR_CNT variables in VARS. */
128 erase_labels (struct variable **vars, size_t var_cnt)
132 /* Erase old value labels if desired. */
133 for (i = 0; i < var_cnt; i++)
134 val_labs_clear (vars[i]->val_labs);
137 /* Parse all the labels for the VAR_CNT variables in VARS and add
138 the specified labels to those variables. */
140 get_label (struct variable **vars, size_t var_cnt)
142 /* Parse all the labels and add them to the variables. */
150 if (vars[0]->type == ALPHA)
152 if (token != T_STRING)
154 lex_error (_("expecting string"));
157 buf_copy_str_rpad (value.s, MAX_SHORT_STRING, ds_c_str (&tokstr));
161 if (!lex_is_number ())
163 lex_error (_("expecting integer"));
166 if (!lex_is_integer ())
167 msg (SW, _("Value label `%g' is not integer."), tokval);
173 if (!lex_force_string ())
175 if (ds_length (&tokstr) > 60)
177 msg (SW, _("Truncating value label to 60 characters."));
178 ds_truncate (&tokstr, 60);
180 label = ds_c_str (&tokstr);
182 for (i = 0; i < var_cnt; i++)
183 val_labs_replace (vars[i]->val_labs, value, label);
187 while (token != '/' && token != '.');