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/dictionary.h>
25 #include <data/procedure.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/hash.h>
32 #include <libpspp/message.h>
33 #include <libpspp/str.h>
36 #define _(msgid) gettext (msgid)
38 /* The code for this function is very similar to the code for the
39 RENAME subcommand of MODIFY VARS. */
41 cmd_rename_variables (struct dataset *ds)
43 struct variable **rename_vars = NULL;
44 char **rename_new_names = NULL;
45 size_t rename_cnt = 0;
48 int status = CMD_CASCADING_FAILURE;
50 if (proc_make_temporary_transformations_permanent (ds))
51 msg (SE, _("RENAME VARS may not be used after TEMPORARY. "
52 "Temporary transformations will be made permanent."));
56 size_t prev_nv_1 = rename_cnt;
57 size_t prev_nv_2 = rename_cnt;
61 msg (SE, _("`(' expected."));
64 if (!parse_variables (dataset_dict (ds), &rename_vars, &rename_cnt,
65 PV_APPEND | PV_NO_DUPLICATE))
69 msg (SE, _("`=' expected between lists of new and old variable names."));
72 if (!parse_DATA_LIST_vars (&rename_new_names, &prev_nv_1, PV_APPEND))
74 if (prev_nv_1 != rename_cnt)
78 msg (SE, _("Differing number of variables in old name list "
79 "(%u) and in new name list (%u)."),
80 (unsigned) rename_cnt - prev_nv_2,
81 (unsigned) prev_nv_1 - prev_nv_2);
82 for (i = 0; i < prev_nv_1; i++)
83 free (rename_new_names[i]);
84 free (rename_new_names);
85 rename_new_names = NULL;
90 msg (SE, _("`)' expected after variable names."));
96 if (!dict_rename_vars (dataset_dict (ds),
97 rename_vars, rename_new_names, rename_cnt,
100 msg (SE, _("Renaming would duplicate variable name %s."), err_name);
104 status = CMD_SUCCESS;
108 if (rename_new_names != NULL)
111 for (i = 0; i < rename_cnt; i++)
112 free (rename_new_names[i]);
113 free (rename_new_names);