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., 59 Temple Place - Suite 330, Boston, MA
29 #include "value-labels.h"
34 static int do_value_labels (int);
35 static int verify_val_labs (struct variable **vars, int var_cnt);
36 static void erase_labels (struct variable **vars, int var_cnt);
37 static int get_label (struct variable **vars, int var_cnt);
42 cmd_value_labels (void)
44 lex_match_id ("VALUE");
45 lex_match_id ("LABELS");
46 return do_value_labels (1);
50 cmd_add_value_labels (void)
53 lex_match_id ("VALUE");
54 lex_match_id ("LABELS");
55 return do_value_labels (0);
61 do_value_labels (int erase)
63 struct variable **vars; /* Variable list. */
64 int var_cnt; /* Number of variables. */
70 parse_variables (default_dict, &vars, &var_cnt, PV_SAME_TYPE);
71 if (!verify_val_labs (vars, var_cnt))
74 erase_labels (vars, var_cnt);
75 while (token != '/' && token != '.')
76 if (!get_label (vars, var_cnt))
89 return CMD_TRAILING_GARBAGE;
96 return CMD_PART_SUCCESS_MAYBE;
99 /* Verifies that none of the VAR_CNT variables in VARS are long
102 verify_val_labs (struct variable **vars, int var_cnt)
106 for (i = 0; i < var_cnt; i++)
108 struct variable *vp = vars[i];
110 if (vp->type == ALPHA && vp->width > 8)
112 msg (SE, _("It is not possible to assign value labels to long "
113 "string variables such as %s."), vp->name);
120 /* Erases all the labels for the VAR_CNT variables in VARS. */
122 erase_labels (struct variable **vars, int var_cnt)
126 /* Erase old value labels if desired. */
127 for (i = 0; i < var_cnt; i++)
128 val_labs_clear (vars[i]->val_labs);
131 /* Parse all the labels for the VAR_CNT variables in VARS and add
132 the specified labels to those variables. */
134 get_label (struct variable **vars, int var_cnt)
136 /* Parse all the labels and add them to the variables. */
144 if (vars[0]->type == ALPHA)
146 if (token != T_STRING)
148 lex_error (_("expecting string"));
151 st_bare_pad_copy (value.s, ds_value (&tokstr), MAX_SHORT_STRING);
157 lex_error (_("expecting integer"));
160 if (!lex_integer_p ())
161 msg (SW, _("Value label `%g' is not integer."), tokval);
167 if (!lex_force_string ())
169 if (ds_length (&tokstr) > 60)
171 msg (SW, _("Truncating value label to 60 characters."));
172 ds_truncate (&tokstr, 60);
174 label = ds_value (&tokstr);
176 for (i = 0; i < var_cnt; i++)
177 val_labs_replace (vars[i]->val_labs, value, label);
181 while (token != '/' && token != '.');