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
24 #include <data/procedure.h>
25 #include <data/dictionary.h>
26 #include <data/variable.h>
27 #include <language/command.h>
28 #include <language/lexer/lexer.h>
29 #include <language/lexer/variable-parser.h>
30 #include <libpspp/alloc.h>
31 #include <libpspp/message.h>
32 #include <libpspp/misc.h>
33 #include <libpspp/str.h>
36 #define _(msgid) gettext (msgid)
41 /* Just to be different, points to a set of null terminated strings
42 containing the names of the vectors to be created. The list
43 itself is terminated by a empty string. So a list of three
44 elements, A B C, would look like this: "A\0B\0C\0\0". */
47 /* vecnames iterators. */
50 /* Maximum allocated position for vecnames, plus one position. */
53 cp = vecnames = xmalloc (256);
54 endp = &vecnames[256];
57 /* Get the name(s) of the new vector(s). */
59 return CMD_CASCADING_FAILURE;
64 char *old_vecnames = vecnames;
65 vecnames = xrealloc (vecnames, endp - vecnames + 256);
66 cp = (cp - old_vecnames) + vecnames;
67 endp = (endp - old_vecnames) + vecnames + 256;
70 for (cp2 = cp; cp2 < cp; cp2 += strlen (cp))
71 if (!strcasecmp (cp2, tokid))
73 msg (SE, _("Vector name %s is given twice."), tokid);
77 if (dict_lookup_vector (default_dict, tokid))
79 msg (SE, _("There is already a vector with name %s."), tokid);
83 cp = stpcpy (cp, tokid) + 1;
89 /* Now that we have the names it's time to check for the short
97 if (strchr (vecnames, '\0')[1])
99 /* There's more than one vector name. */
100 msg (SE, _("A slash must be used to separate each vector "
101 "specification when using the long form. Commands "
102 "such as VECTOR A,B=Q1 TO Q20 are not supported."));
106 if (!parse_variables (default_dict, &v, &nv,
107 PV_SAME_TYPE | PV_DUPLICATE))
110 dict_create_vector (default_dict, vecnames, v, nv);
113 else if (lex_match ('('))
117 /* Maximum number of digits in a number to add to the base
121 /* Name of an individual variable to be created. */
122 char name[SHORT_NAME_LEN + 1];
124 /* Vector variables. */
128 if (!lex_force_int ())
129 return CMD_CASCADING_FAILURE;
134 msg (SE, _("Vectors must have at least one element."));
137 if (!lex_force_match (')'))
140 /* First check that all the generated variable names
141 are LONG_NAME_LEN characters or shorter. */
142 ndig = intlog10 (nv);
143 for (cp = vecnames; *cp;)
145 int len = strlen (cp);
146 if (len + ndig > LONG_NAME_LEN)
148 msg (SE, _("%s%d is too long for a variable name."), cp, nv);
154 /* Next check that none of the variables exist. */
155 for (cp = vecnames; *cp;)
157 for (i = 0; i < nv; i++)
159 sprintf (name, "%s%d", cp, i + 1);
160 if (dict_lookup_var (default_dict, name))
162 msg (SE, _("There is already a variable named %s."),
167 cp += strlen (cp) + 1;
170 /* Finally create the variables and vectors. */
171 v = xmalloc (nv * sizeof *v);
172 for (cp = vecnames; *cp;)
174 for (i = 0; i < nv; i++)
176 sprintf (name, "%s%d", cp, i + 1);
177 v[i] = dict_create_var_assert (default_dict, name, 0);
179 if (!dict_create_vector (default_dict, cp, v, nv))
181 cp += strlen (cp) + 1;
187 msg (SE, _("The syntax for this command does not match "
188 "the expected syntax for either the long form "
189 "or the short form of VECTOR."));
196 while (lex_match ('/'));
200 lex_error (_("expecting end of command"));