1 /* PSPP - RANK. -*-c-*-
3 Copyright (C) 2005 Free Software Foundation, Inc.
4 Author: John Darrington 2005
6 This program is free software; you can redistribute it and/or
7 modify it under the terms of the GNU General Public License as
8 published by the Free Software Foundation; either version 2 of the
9 License, or (at your option) any later version.
11 This program is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
22 #include <language/command.h>
23 #include <language/stats/sort-criteria.h>
24 #include <libpspp/compiler.h>
25 #include <data/dictionary.h>
26 #include <math/sort.h>
27 #include <data/variable.h>
29 #include "sort-criteria.h"
32 #define _(msgid) gettext (msgid)
48 +missing=miss:!exclude/include.
71 struct variable **destvars;
72 struct variable *srcvar;
76 static struct rank_spec *rank_specs;
77 static size_t n_rank_specs;
79 static struct sort_criteria *sc;
81 static struct variable **group_vars;
82 static size_t n_group_vars;
84 static struct cmd_rank cmd;
96 if ( !parse_rank(&cmd) )
100 for (i = 0 ; i < sc->crit_cnt ; ++i )
102 struct sort_criterion *crit = &sc->crits[i];
104 printf("Dir: %d; Index: %d\n", crit->dir, crit->fv);
107 for (i = 0 ; i < n_group_vars ; ++i )
108 printf("Group var: %s\n",group_vars[0]->name);
110 for (i = 0 ; i < n_rank_specs ; ++i )
113 printf("Ranks spec %d; Func: %d\n",i, rank_specs[i].rfunc);
115 for (j=0; j < sc->crit_cnt ; ++j )
116 printf("Dest var is \"%s\"\n", rank_specs[i].destvars[j]->name);
123 for (i = 0 ; i < n_rank_specs ; ++i )
125 free(rank_specs[i].destvars);
130 sort_destroy_criteria(sc);
137 /* Parser for the variables sub command
138 Returns 1 on success */
140 rank_custom_variables(struct cmd_rank *cmd UNUSED)
142 static const int terminators[2] = {T_BY, 0};
146 if ((token != T_ID || dict_lookup_var (default_dict, tokid) == NULL)
150 sc = sort_parse_criteria (default_dict, 0, 0, 0, terminators);
152 if ( lex_match(T_BY) )
154 if ((token != T_ID || dict_lookup_var (default_dict, tokid) == NULL))
159 if (!parse_variables (default_dict, &group_vars, &n_group_vars,
160 PV_NO_DUPLICATE | PV_NUMERIC | PV_NO_SCRATCH) )
171 /* Return a name for a new variable which ranks the variable VAR_NAME,
172 according to the ranking function F.
173 If IDX is non zero, then IDX is used as a disambiguating number.
174 FIXME: This is not very robust.
177 new_variable_name(const char *ranked_var_name, enum RANK_FUNC f, int idx)
179 static char new_name[SHORT_NAME_LEN + 1];
180 char temp[SHORT_NAME_LEN + 1];
188 strcpy(new_name,"R");
194 strcpy(new_name,"N");
199 strcpy(new_name,"P");
203 strcpy(new_name,"S");
211 strncat(new_name, ranked_var_name, 7);
215 strncpy(temp, ranked_var_name, 3);
216 snprintf(new_name, SHORT_NAME_LEN, "%s%03d", temp, idx);
222 /* Parse the [/rank INTO var1 var2 ... varN ] clause */
224 parse_rank_function(struct cmd_rank *cmd UNUSED, enum RANK_FUNC f)
226 static const struct fmt_spec f8_2 = {FMT_F, 8, 2};
230 rank_specs = xnrealloc(rank_specs, n_rank_specs, sizeof *rank_specs);
231 rank_specs[n_rank_specs - 1].rfunc = f;
233 rank_specs[n_rank_specs - 1].destvars =
234 xcalloc (sc->crit_cnt, sizeof (struct variable *));
236 if (lex_match_id("INTO"))
238 struct variable *destvar;
240 while( token == T_ID )
243 if ( dict_lookup_var (default_dict, tokid) != NULL )
245 msg(SE, _("Variable %s already exists."), tokid);
248 if ( var_count > sc->crit_cnt )
250 msg(SE, _("Too many variables in INTO clause."));
254 destvar = dict_create_var (default_dict, tokid, 0);
257 destvar->print = destvar->write = f8_2;
260 rank_specs[n_rank_specs - 1].destvars[var_count - 1] = destvar ;
267 /* Allocate rank variable names to all those which haven't had INTO
268 variables assigned */
269 while (var_count < sc->crit_cnt)
272 struct variable *destvar ;
273 const struct variable *v = dict_get_var(default_dict,
274 sc->crits[var_count].fv);
279 new_name = new_variable_name(v->name, f, idx);
281 destvar = dict_create_var (default_dict, new_name, 0);
285 } while( !destvar ) ;
287 destvar->print = destvar->write = f8_2;
289 rank_specs[n_rank_specs - 1].destvars[var_count] = destvar ;
299 rank_custom_rank(struct cmd_rank *cmd )
301 return parse_rank_function(cmd, RANK);
305 rank_custom_normal(struct cmd_rank *cmd )
307 return parse_rank_function(cmd, NORMAL);
311 rank_custom_percent(struct cmd_rank *cmd )
313 return parse_rank_function(cmd, NORMAL);
317 rank_custom_rfraction(struct cmd_rank *cmd )
319 return parse_rank_function(cmd, RFRACTION);
323 rank_custom_proportion(struct cmd_rank *cmd )
325 return parse_rank_function(cmd, PROPORTION);
329 rank_custom_n(struct cmd_rank *cmd )
331 return parse_rank_function(cmd, N);
335 rank_custom_savage(struct cmd_rank *cmd )
337 return parse_rank_function(cmd, SAVAGE);
342 rank_custom_ntiles(struct cmd_rank *cmd )
344 if ( lex_force_match('(') )
346 if ( lex_force_int() )
349 lex_force_match(')');
357 return parse_rank_function(cmd, NTILES);