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
26 #include "identifier.h"
31 #define _(msgid) gettext (msgid)
33 #define DEFFMT(LABEL, NAME, N_ARGS, IMIN_W, IMAX_W, OMIN_W, OMAX_W, CAT, \
35 {NAME, N_ARGS, IMIN_W, IMAX_W, OMIN_W, OMAX_W, CAT, OUTPUT, SPSS_FMT},
36 struct fmt_desc formats[FMT_NUMBER_OF_FORMATS + 1] =
39 {"", -1, -1, -1, -1, -1, 0000, -1, -1},
43 const struct fmt_spec f8_2 = {FMT_F, 8, 2};
45 /* Converts F to its string representation (for instance, "F8.2") and
46 returns a pointer to a static buffer containing that string. */
48 fmt_to_string (const struct fmt_spec *f)
52 if (formats[f->type].n_args >= 2)
53 sprintf (buf, "%s%d.%d", formats[f->type].name, f->w, f->d);
55 sprintf (buf, "%s%d", formats[f->type].name, f->w);
59 /* Does checks in common betwen check_input_specifier() and
60 check_output_specifier() and returns true if so. Otherwise,
61 emits an error message (if EMIT_ERROR is nonzero) and returns
64 check_common_specifier (const struct fmt_spec *spec, bool emit_error)
69 if ( spec->type > FMT_NUMBER_OF_FORMATS )
72 msg (SE, _("Format specifies a bad type (%d)"), spec->type);
77 f = &formats[spec->type];
78 str = fmt_to_string (spec);
80 if ((f->cat & FCAT_EVEN_WIDTH) && spec->w % 2)
83 msg (SE, _("Format %s specifies an odd width %d, but "
84 "an even width is required."),
88 if (f->n_args > 1 && (spec->d < 0 || spec->d > 16))
91 msg (SE, _("Format %s specifies a bad number of "
92 "implied decimal places %d. Input format %s allows "
93 "up to 16 implied decimal places."), str, spec->d, f->name);
99 /* Checks whether SPEC is valid as an input format and returns
100 nonzero if so. Otherwise, emits an error message (if
101 EMIT_ERROR is nonzero) and returns zero. */
103 check_input_specifier (const struct fmt_spec *spec, int emit_error)
108 if (!check_common_specifier (spec, emit_error))
111 f = &formats[spec->type];
112 str = fmt_to_string (spec);
115 if (spec->type == FMT_X)
117 if (f->cat & FCAT_OUTPUT_ONLY)
120 msg (SE, _("Format %s may not be used for input."), f->name);
123 if (spec->w < f->Imin_w || spec->w > f->Imax_w)
126 msg (SE, _("Input format %s specifies a bad width %d. "
127 "Format %s requires a width between %d and %d."),
128 str, spec->w, f->name, f->Imin_w, f->Imax_w);
131 if ((spec->type == FMT_F || spec->type == FMT_COMMA
132 || spec->type == FMT_DOLLAR)
133 && spec->d > spec->w)
136 msg (SE, _("Input format %s is invalid because it specifies more "
137 "decimal places than the field width."), str);
143 /* Checks whether SPEC is valid as an output format and returns
144 nonzero if so. Otherwise, emits an error message (if
145 EMIT_ERROR is nonzero) and returns zero. */
147 check_output_specifier (const struct fmt_spec *spec, int emit_error)
152 if (!check_common_specifier (spec, emit_error))
155 f = &formats[spec->type];
156 str = fmt_to_string (spec);
158 if (spec->type == FMT_X)
160 if (spec->w < f->Omin_w || spec->w > f->Omax_w)
163 msg (SE, _("Output format %s specifies a bad width %d. "
164 "Format %s requires a width between %d and %d."),
165 str, spec->w, f->name, f->Omin_w, f->Omax_w);
168 if ((spec->type == FMT_F || spec->type == FMT_COMMA
169 || spec->type == FMT_DOLLAR)
170 && spec->d >= spec->w)
173 msg (SE, _("Output format %s is invalid because it specifies as "
174 "many decimal places as the field width, which "
175 "fails to allow space for a decimal point. "
176 "Try %s%d.%d instead."),
177 str, f->name, spec->d + 1, spec->d);
183 /* Checks that FORMAT is appropriate for a variable of the given
184 TYPE and returns true if so. Otherwise returns false and (if
185 EMIT_ERROR is true) emits an error message. */
187 check_specifier_type (const struct fmt_spec *format,
188 int type, bool emit_error)
190 const struct fmt_desc *f = &formats[format->type];
191 assert (type == NUMERIC || type == ALPHA);
192 if ((type == ALPHA) != ((f->cat & FCAT_STRING) != 0))
195 msg (SE, _("%s variables are not compatible with %s format %s."),
196 type == ALPHA ? _("String") : _("Numeric"),
197 type == ALPHA ? _("numeric") : _("string"),
198 fmt_to_string (format));
204 /* Checks that FORMAT is appropriate for a variable of the given
205 WIDTH and returns true if so. Otherwise returns false and (if
206 EMIT_ERROR is true) emits an error message. */
208 check_specifier_width (const struct fmt_spec *format,
209 int width, bool emit_error)
211 if (!check_specifier_type (format, width != 0 ? ALPHA : NUMERIC, emit_error))
213 if (get_format_var_width (format) != width)
216 msg (SE, _("String variable with width %d not compatible with "
218 width, fmt_to_string (format));
224 /* Converts input format specifier INPUT into output format
227 convert_fmt_ItoO (const struct fmt_spec *input, struct fmt_spec *output)
229 assert (check_input_specifier (input, 0));
231 output->type = formats[input->type].output;
232 output->w = input->w;
233 if (output->w > formats[output->type].Omax_w)
234 output->w = formats[output->type].Omax_w;
235 output->d = input->d;
245 output->w = max (max (input->w, input->d+7), 10);
246 output->d = max (input->d, 3);
250 /* nothing is necessary */
259 static const int map[] = {4, 6, 9, 11, 14, 16, 18, 21};
260 assert (input->w % 2 == 0 && input->w >= 2 && input->w <= 16);
261 output->w = map[input->w / 2 - 1];
265 output->w = 8, output->d = 2; /* FIXME */
273 output->w = 8, output->d = 2;
275 output->w = 9 + input->d;
285 /* nothing is necessary */
288 output->w = input->w / 2;
295 /* nothing is necessary */
302 /* nothing is necessary */
313 /* nothing is necessary */
319 assert (check_output_specifier (output, 0));
322 /* Returns the width corresponding to the format specifier. The
323 return value is the value of the `width' member of a `struct
324 variable' for such an input format. */
326 get_format_var_width (const struct fmt_spec *spec)
328 if (spec->type == FMT_AHEX)
330 else if (spec->type == FMT_A)
336 /* Returns the PSPP format corresponding to the given SPSS
339 translate_fmt (int spss)
343 for (type = 0; type < FMT_NUMBER_OF_FORMATS; type++)
344 if (formats[type].spss == spss)
349 /* Returns an input format specification with type TYPE, width W,
352 make_input_format (int type, int w, int d)
358 assert (check_input_specifier (&f, 0));
362 /* Returns an output format specification with type TYPE, width
363 W, and D decimals. */
365 make_output_format (int type, int w, int d)
371 assert (check_output_specifier (&f, 0));