1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 1997-9, 2000, 2006, 2009-2011, 2013 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/>. */
23 #include "data/casegrouper.h"
24 #include "data/casereader.h"
25 #include "data/dataset.h"
26 #include "data/dictionary.h"
27 #include "data/data-out.h"
28 #include "data/format.h"
29 #include "data/subcase.h"
30 #include "data/variable.h"
31 #include "language/command.h"
32 #include "language/dictionary/split-file.h"
33 #include "language/lexer/lexer.h"
34 #include "language/lexer/variable-parser.h"
35 #include "libpspp/compiler.h"
36 #include "libpspp/ll.h"
37 #include "libpspp/message.h"
38 #include "libpspp/misc.h"
39 #include "output/tab.h"
40 #include "output/table-item.h"
42 #include "gl/intprops.h"
43 #include "gl/minmax.h"
44 #include "gl/xalloc.h"
45 #include "gl/xmalloca.h"
48 #define _(msgid) gettext (msgid)
62 const struct variable **v_variables;
64 enum numbering numbering;
69 list_execute (const struct lst_cmd *lcmd, struct dataset *ds)
71 const struct dictionary *dict = dataset_dict (ds);
75 struct casegrouper *grouper;
76 struct casereader *group;
79 subcase_init_empty (&sc);
80 for (i = 0; i < lcmd->n_variables; i++)
81 subcase_add_var (&sc, lcmd->v_variables[i], SC_ASCEND);
84 grouper = casegrouper_create_splits (proc_open (ds), dict);
85 while (casegrouper_get_next_group (grouper, &group))
90 ccase = casereader_peek (group, 0);
93 output_split_file_values (ds, ccase);
97 group = casereader_project (group, &sc);
98 if (lcmd->numbering == format_numbered)
99 group = casereader_create_arithmetic_sequence (group, 1, 1);
100 group = casereader_select (group, lcmd->first - 1,
101 (lcmd->last != LONG_MAX ? lcmd->last
102 : CASENUMBER_MAX), lcmd->step);
104 if (lcmd->numbering == format_numbered)
110 width = lcmd->last == LONG_MAX ? 5 : intlog10 (lcmd->last);
111 fmt = fmt_for_output (FMT_F, width, 0);
112 col = caseproto_get_n_widths (casereader_get_proto (group)) - 1;
114 t = table_from_casereader (group, col, _("Case Number"), &fmt);
119 for (i = 0; i < lcmd->n_variables; i++)
121 const struct variable *var = lcmd->v_variables[i];
124 c = table_from_casereader (group, i, var_get_name (var),
125 var_get_print_format (var));
126 t = table_hpaste (t, c);
129 casereader_destroy (group);
131 table_item_submit (table_item_create (t, "Data List"));
133 ok = casegrouper_destroy (grouper);
134 ok = proc_commit (ds) && ok;
136 subcase_destroy (&sc);
137 free (lcmd->v_variables);
139 return ok ? CMD_SUCCESS : CMD_CASCADING_FAILURE;
143 /* Parses and executes the LIST procedure. */
145 cmd_list (struct lexer *lexer, struct dataset *ds)
148 const struct dictionary *dict = dataset_dict (ds);
150 /* Fill in defaults. */
155 cmd.v_variables = NULL;
156 cmd.numbering = format_unnumbered;
159 while (lex_token (lexer) != T_ENDCMD)
161 lex_match (lexer, T_SLASH);
162 if (lex_match_id (lexer, "VARIABLES") )
164 lex_match (lexer, T_EQUALS);
165 if (! parse_variables_const (lexer, dict, &cmd.v_variables, &cmd.n_variables, 0 ))
167 msg (SE, _("No variables specified."));
171 else if (lex_match_id (lexer, "FORMAT") )
173 lex_match (lexer, T_EQUALS);
174 if (lex_match_id (lexer, "NUMBERED") )
176 cmd.numbering = format_numbered;
178 else if (lex_match_id (lexer, "UNNUMBERED") )
180 cmd.numbering = format_unnumbered;
184 lex_error (lexer, NULL);
188 /* example: LIST /CASES=FROM 1 TO 25 BY 5. */
189 else if (lex_match_id (lexer, "CASES"))
191 lex_match (lexer, T_EQUALS);
192 lex_force_match_id (lexer, "FROM");
194 if (lex_force_int (lexer))
196 cmd.first = lex_integer (lexer);
200 lex_force_match (lexer, T_TO);
202 if (lex_force_int (lexer))
204 cmd.last = lex_integer (lexer);
208 lex_force_match (lexer, T_BY);
210 if (lex_force_int (lexer))
212 cmd.step = lex_integer (lexer);
216 else if (! parse_variables_const (lexer, dict, &cmd.v_variables, &cmd.n_variables, 0 ))
223 /* Verify arguments. */
224 if (cmd.first > cmd.last)
227 msg (SW, _("The first case (%ld) specified precedes the last case (%ld) "
228 "specified. The values will be swapped."), cmd.first, cmd.last);
230 cmd.first = cmd.last;
236 msg (SW, _("The first case (%ld) to list is less than 1. The value is "
237 "being reset to 1."), cmd.first);
243 msg (SW, _("The last case (%ld) to list is less than 1. The value is "
244 "being reset to 1."), cmd.last);
250 msg (SW, _("The step value %ld is less than 1. The value is being "
251 "reset to 1."), cmd.step);
255 /* If no variables were explicitly provided, then default to ALL */
256 if (cmd.n_variables == 0)
257 dict_get_vars (dict, &cmd.v_variables, &cmd.n_variables,
258 DC_SYSTEM | DC_SCRATCH);
260 return list_execute (&cmd, ds);
263 free (cmd.v_variables);