1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 1997-9, 2000, 2010, 2011 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU 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, see <http://www.gnu.org/licenses/>. */
21 #include "data/dataset.h"
22 #include "data/dictionary.h"
23 #include "data/variable.h"
24 #include "language/command.h"
25 #include "language/lexer/lexer.h"
26 #include "language/lexer/variable-parser.h"
27 #include "libpspp/message.h"
28 #include "libpspp/str.h"
30 #include "gl/xalloc.h"
33 #define _(msgid) gettext (msgid)
35 /* The code for this function is very similar to the code for the
36 RENAME subcommand of MODIFY VARS. */
38 cmd_rename_variables (struct lexer *lexer, struct dataset *ds)
40 struct variable **rename_vars = NULL;
41 char **rename_new_names = NULL;
42 size_t rename_cnt = 0;
45 int status = CMD_CASCADING_FAILURE;
47 if (proc_make_temporary_transformations_permanent (ds))
48 msg (SE, _("RENAME VARS may not be used after TEMPORARY. "
49 "Temporary transformations will be made permanent."));
53 size_t prev_nv_1 = rename_cnt;
54 size_t prev_nv_2 = rename_cnt;
56 if (!lex_match (lexer, T_LPAREN))
58 msg (SE, _("`(' expected."));
61 if (!parse_variables (lexer, dataset_dict (ds), &rename_vars, &rename_cnt,
62 PV_APPEND | PV_NO_DUPLICATE))
64 if (!lex_match (lexer, T_EQUALS))
66 msg (SE, _("`=' expected between lists of new and old variable names."));
69 if (!parse_DATA_LIST_vars (lexer, dataset_dict (ds),
70 &rename_new_names, &prev_nv_1,
71 PV_APPEND | PV_NO_DUPLICATE))
73 if (prev_nv_1 != rename_cnt)
77 msg (SE, _("Differing number of variables in old name list "
78 "(%zu) and in new name list (%zu)."),
79 rename_cnt - prev_nv_2, prev_nv_1 - prev_nv_2);
80 for (i = 0; i < prev_nv_1; i++)
81 free (rename_new_names[i]);
82 free (rename_new_names);
83 rename_new_names = NULL;
86 if (!lex_match (lexer, T_RPAREN))
88 msg (SE, _("`)' expected after variable names."));
92 while (lex_token (lexer) != T_ENDCMD);
94 if (!dict_rename_vars (dataset_dict (ds),
95 rename_vars, rename_new_names, rename_cnt,
98 msg (SE, _("Renaming would duplicate variable name %s."), err_name);
102 status = CMD_SUCCESS;
106 if (rename_new_names != NULL)
109 for (i = 0; i < rename_cnt; i++)
110 free (rename_new_names[i]);
111 free (rename_new_names);