1 /* PSPP - computes sample statistics.
2 Copyright (C) 1997-9, 2000, 2006 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 This program is distributed in the hope that it will be useful, but
10 WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 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, write to the Free Software
16 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 #include <data/case.h>
24 #include <data/data-out.h>
25 #include <data/procedure.h>
26 #include <data/transformations.h>
27 #include <data/variable.h>
28 #include <language/command.h>
29 #include <language/data-io/data-writer.h>
30 #include <language/data-io/file-handle.h>
31 #include <language/data-io/placement-parser.h>
32 #include <language/lexer/format-parser.h>
33 #include <language/lexer/lexer.h>
34 #include <language/lexer/variable-parser.h>
35 #include <libpspp/alloc.h>
36 #include <libpspp/assertion.h>
37 #include <libpspp/compiler.h>
38 #include <libpspp/ll.h>
39 #include <libpspp/message.h>
40 #include <libpspp/misc.h>
41 #include <libpspp/pool.h>
42 #include <output/manager.h>
43 #include <output/table.h>
46 #define _(msgid) gettext (msgid)
48 /* Describes what to do when an output field is encountered. */
51 PRT_LITERAL, /* Literal string. */
52 PRT_VAR /* Variable. */
55 /* Describes how to output one field. */
59 struct ll ll; /* In struct print_trns `specs' list. */
60 enum field_type type; /* What type of field this is. */
61 int record; /* 1-based record number. */
62 int first_column; /* 0-based first column. */
65 const struct variable *var; /* Associated variable. */
66 struct fmt_spec format; /* Output spec. */
67 bool add_space; /* Add trailing space? */
68 bool sysmis_as_spaces; /* Output SYSMIS as spaces? */
70 /* PRT_LITERAL only. */
71 struct string string; /* String to output. */
74 static inline struct prt_out_spec *
75 ll_to_prt_out_spec (struct ll *ll)
77 return ll_data (ll, struct prt_out_spec, ll);
80 /* PRINT, PRINT EJECT, WRITE private data structure. */
83 struct pool *pool; /* Stores related data. */
84 bool eject; /* Eject page before printing? */
85 bool include_prefix; /* Prefix lines with space? */
86 struct dfm_writer *writer; /* Output file, NULL=listing file. */
87 struct ll_list specs; /* List of struct prt_out_specs. */
88 size_t record_cnt; /* Number of records to write. */
89 struct string line; /* Output buffer. */
98 static int internal_cmd_print (struct lexer *, struct dataset *ds,
99 enum which_formats, bool eject);
100 static trns_proc_func print_trns_proc;
101 static trns_free_func print_trns_free;
102 static bool parse_specs (struct lexer *, struct pool *tmp_pool, struct print_trns *,
103 struct dictionary *dict, enum which_formats);
104 static void dump_table (struct print_trns *, const struct file_handle *);
108 /* Parses PRINT command. */
110 cmd_print (struct lexer *lexer, struct dataset *ds)
112 return internal_cmd_print (lexer, ds, PRINT, false);
115 /* Parses PRINT EJECT command. */
117 cmd_print_eject (struct lexer *lexer, struct dataset *ds)
119 return internal_cmd_print (lexer, ds, PRINT, true);
122 /* Parses WRITE command. */
124 cmd_write (struct lexer *lexer, struct dataset *ds)
126 return internal_cmd_print (lexer, ds, WRITE, false);
129 /* Parses the output commands. */
131 internal_cmd_print (struct lexer *lexer, struct dataset *ds,
132 enum which_formats which_formats, bool eject)
134 bool print_table = 0;
135 struct print_trns *trns;
136 struct file_handle *fh = NULL;
137 struct pool *tmp_pool;
139 /* Fill in prt to facilitate error-handling. */
140 trns = pool_create_container (struct print_trns, pool);
143 trns->record_cnt = 0;
144 ll_init (&trns->specs);
145 ds_init_empty (&trns->line);
146 ds_register_pool (&trns->line, trns->pool);
148 tmp_pool = pool_create_subpool (trns->pool);
150 /* Parse the command options. */
151 while (lex_token (lexer) != '/' && lex_token (lexer) != '.')
153 if (lex_match_id (lexer, "OUTFILE"))
155 lex_match (lexer, '=');
157 fh = fh_parse (lexer, FH_REF_FILE);
161 else if (lex_match_id (lexer, "RECORDS"))
163 lex_match (lexer, '=');
164 lex_match (lexer, '(');
165 if (!lex_force_int (lexer))
167 trns->record_cnt = lex_integer (lexer);
169 lex_match (lexer, ')');
171 else if (lex_match_id (lexer, "TABLE"))
173 else if (lex_match_id (lexer, "NOTABLE"))
177 lex_error (lexer, _("expecting a valid subcommand"));
182 /* When PRINT or PRINT EJECT writes to an external file, we
183 prefix each line with a space for compatibility. */
184 trns->include_prefix = which_formats == PRINT && fh != NULL;
186 /* Parse variables and strings. */
187 if (!parse_specs (lexer, tmp_pool, trns, dataset_dict (ds), which_formats))
190 if (lex_end_of_command (lexer) != CMD_SUCCESS)
195 trns->writer = dfm_open_writer (fh);
196 if (trns->writer == NULL)
200 /* Output the variable table if requested. */
202 dump_table (trns, fh);
204 /* Put the transformation in the queue. */
205 add_transformation (ds, print_trns_proc, print_trns_free, trns);
207 pool_destroy (tmp_pool);
212 print_trns_free (trns);
216 static bool parse_string_argument (struct lexer *, struct print_trns *,
217 int record, int *column);
218 static bool parse_variable_argument (struct lexer *, const struct dictionary *,
220 struct pool *tmp_pool,
221 int *record, int *column,
224 /* Parses all the variable and string specifications on a single
225 PRINT, PRINT EJECT, or WRITE command into the prt structure.
228 parse_specs (struct lexer *lexer, struct pool *tmp_pool, struct print_trns *trns,
229 struct dictionary *dict,
230 enum which_formats which_formats)
235 if (lex_token (lexer) == '.')
237 trns->record_cnt = 1;
241 while (lex_token (lexer) != '.')
245 if (!parse_record_placement (lexer, &record, &column))
248 if (lex_token (lexer) == T_STRING)
249 ok = parse_string_argument (lexer, trns, record, &column);
251 ok = parse_variable_argument (lexer, dict, trns, tmp_pool, &record, &column,
256 lex_match (lexer, ',');
259 if (trns->record_cnt != 0 && trns->record_cnt != record)
260 msg (SW, _("Output calls for %d records but %u specified on RECORDS "
262 record, (unsigned int) trns->record_cnt);
263 trns->record_cnt = record;
268 /* Parses a string argument to the PRINT commands. Returns success. */
270 parse_string_argument (struct lexer *lexer, struct print_trns *trns, int record, int *column)
272 struct prt_out_spec *spec = pool_alloc (trns->pool, sizeof *spec);
273 spec->type = PRT_LITERAL;
274 spec->record = record;
275 spec->first_column = *column;
276 ds_init_string (&spec->string, lex_tokstr (lexer));
277 ds_register_pool (&spec->string, trns->pool);
280 /* Parse the included column range. */
281 if (lex_is_number (lexer))
283 int first_column, last_column;
284 bool range_specified;
286 if (!parse_column_range (lexer, &first_column, &last_column, &range_specified))
289 spec->first_column = first_column;
291 ds_set_length (&spec->string, last_column - first_column + 1, ' ');
293 *column = spec->first_column + ds_length (&spec->string);
295 ll_push_tail (&trns->specs, &spec->ll);
299 /* Parses a variable argument to the PRINT commands by passing it off
300 to fixed_parse_compatible() or fixed_parse_fortran() as appropriate.
303 parse_variable_argument (struct lexer *lexer, const struct dictionary *dict,
304 struct print_trns *trns, struct pool *tmp_pool,
305 int *record, int *column,
306 enum which_formats which_formats)
308 const struct variable **vars;
309 size_t var_cnt, var_idx;
310 struct fmt_spec *formats, *f;
314 if (!parse_variables_const_pool (lexer, tmp_pool, dict,
315 &vars, &var_cnt, PV_DUPLICATE))
318 if (lex_is_number (lexer) || lex_token (lexer) == '(')
320 if (!parse_var_placements (lexer, tmp_pool, var_cnt, false,
321 &formats, &format_cnt))
329 lex_match (lexer, '*');
331 formats = pool_nmalloc (tmp_pool, var_cnt, sizeof *formats);
332 format_cnt = var_cnt;
333 for (i = 0; i < var_cnt; i++)
335 const struct variable *v = vars[i];
336 formats[i] = (which_formats == PRINT
337 ? *var_get_print_format (v)
338 : *var_get_write_format (v));
340 add_space = which_formats == PRINT;
344 for (f = formats; f < &formats[format_cnt]; f++)
345 if (!execute_placement_format (f, record, column))
347 const struct variable *var;
348 struct prt_out_spec *spec;
350 var = vars[var_idx++];
351 if (!fmt_check_width_compat (f, var_get_width (var)))
354 spec = pool_alloc (trns->pool, sizeof *spec);
355 spec->type = PRT_VAR;
356 spec->record = *record;
357 spec->first_column = *column;
360 spec->add_space = add_space;
362 /* This is a completely bizarre twist for compatibility:
363 WRITE outputs the system-missing value as a field
364 filled with spaces, instead of using the normal format
365 that usually contains a period. */
366 spec->sysmis_as_spaces = (which_formats == WRITE
367 && var_is_numeric (var)
368 && (fmt_get_category (spec->format.type)
371 ll_push_tail (&trns->specs, &spec->ll);
373 *column += f->w + add_space;
375 assert (var_idx == var_cnt);
380 /* Prints the table produced by the TABLE subcommand to the listing
383 dump_table (struct print_trns *trns, const struct file_handle *fh)
385 struct prt_out_spec *spec;
390 spec_cnt = ll_count (&trns->specs);
391 t = tab_create (4, spec_cnt + 1, 0);
392 tab_columns (t, TAB_COL_DOWN, 1);
393 tab_box (t, TAL_1, TAL_1, TAL_0, TAL_1, 0, 0, 3, spec_cnt);
394 tab_hline (t, TAL_2, 0, 3, 1);
395 tab_headers (t, 0, 0, 1, 0);
396 tab_text (t, 0, 0, TAB_CENTER | TAT_TITLE, _("Variable"));
397 tab_text (t, 1, 0, TAB_CENTER | TAT_TITLE, _("Record"));
398 tab_text (t, 2, 0, TAB_CENTER | TAT_TITLE, _("Columns"));
399 tab_text (t, 3, 0, TAB_CENTER | TAT_TITLE, _("Format"));
400 tab_dim (t, tab_natural_dimensions);
402 ll_for_each (spec, struct prt_out_spec, ll, &trns->specs)
404 char fmt_string[FMT_STRING_LEN_MAX + 1];
409 tab_text (t, 0, row, TAB_LEFT | TAB_FIX | TAT_PRINTF, "\"%.*s\"",
410 (int) ds_length (&spec->string), ds_data (&spec->string));
411 width = ds_length (&spec->string);
414 tab_text (t, 0, row, TAB_LEFT, var_get_name (spec->var));
415 tab_text (t, 3, row, TAB_LEFT | TAB_FIX,
416 fmt_to_string (&spec->format, fmt_string));
417 width = spec->format.w;
422 tab_text (t, 1, row, TAT_PRINTF, "%d", spec->record);
423 tab_text (t, 2, row, TAT_PRINTF, "%3d-%3d",
424 spec->first_column, spec->first_column + width - 1);
429 tab_title (t, ngettext ("Writing %d record to %s.",
430 "Writing %d records to %s.", trns->record_cnt),
431 trns->record_cnt, fh_get_name (fh));
433 tab_title (t, ngettext ("Writing %d record.",
434 "Writing %d records.", trns->record_cnt),
439 /* Transformation. */
441 static void flush_records (struct print_trns *, int target_record,
442 bool *eject, int *record);
444 /* Performs the transformation inside print_trns T on case C. */
446 print_trns_proc (void *trns_, struct ccase *c, casenumber case_num UNUSED)
448 struct print_trns *trns = trns_;
449 bool eject = trns->eject;
451 struct prt_out_spec *spec;
453 ds_clear (&trns->line);
454 ds_put_char (&trns->line, ' ');
455 ll_for_each (spec, struct prt_out_spec, ll, &trns->specs)
457 flush_records (trns, spec->record, &eject, &record);
459 ds_set_length (&trns->line, spec->first_column, ' ');
460 if (spec->type == PRT_VAR)
462 const union value *input = case_data (c, spec->var);
463 char *output = ds_put_uninit (&trns->line, spec->format.w);
464 if (!spec->sysmis_as_spaces || input->f != SYSMIS)
465 data_out (input, &spec->format, output);
467 memset (output, ' ', spec->format.w);
469 ds_put_char (&trns->line, ' ');
472 ds_put_substring (&trns->line, ds_ss (&spec->string));
474 flush_records (trns, trns->record_cnt + 1, &eject, &record);
476 if (trns->writer != NULL && dfm_write_error (trns->writer))
478 return TRNS_CONTINUE;
481 /* Advance from *RECORD to TARGET_RECORD, outputting records
482 along the way. If *EJECT is true, then the first record
483 output is preceded by ejecting the page (and *EJECT is set
486 flush_records (struct print_trns *trns, int target_record,
487 bool *eject, int *record)
489 for (; target_record > *record; (*record)++)
491 char *line = ds_cstr (&trns->line);
492 size_t length = ds_length (&trns->line);
498 if (trns->writer == NULL)
505 if (trns->writer == NULL)
506 tab_output_text (TAB_FIX | TAT_NOWRAP, &line[1]);
509 if (!trns->include_prefix)
514 dfm_put_record (trns->writer, line, length);
517 ds_truncate (&trns->line, 1);
523 print_trns_free (void *trns_)
525 struct print_trns *trns = trns_;
528 if (trns->writer != NULL)
529 ok = dfm_close_writer (trns->writer);
530 pool_destroy (trns->pool);