1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 2020 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/>. */
27 #include "gl/mbiter.h"
28 #include "data/file-name.h"
29 #include "data/file-handle-def.h"
30 #include "libpspp/assertion.h"
31 #include "libpspp/cast.h"
32 #include "libpspp/compiler.h"
33 #include "libpspp/hmap.h"
34 #include "libpspp/ll.h"
35 #include "libpspp/i18n.h"
36 #include "libpspp/message.h"
37 #include "libpspp/temp-file.h"
38 #include "libpspp/version.h"
39 #include "output/cairo-chart.h"
40 #include "output/driver-provider.h"
41 #include "output/options.h"
42 #include "output/output-item.h"
43 #include "output/pivot-output.h"
44 #include "output/pivot-table.h"
45 #include "output/table-provider.h"
46 #include "output/tex-rendering.h"
47 #include "output/tex-parsing.h"
50 #include "tex-glyphs.h"
52 #include "gl/minmax.h"
53 #include "gl/xalloc.h"
54 #include "gl/c-vasnprintf.h"
57 #define _(msgid) gettext (msgid)
59 /* This file uses TABLE_HORZ and TABLE_VERT enough to warrant abbreviating. */
63 /* The desired maximum line length in the TeX file. */
64 #define TEX_LINE_MAX 80
68 struct output_driver driver;
69 /* A hash table containing any Tex macros which need to be emitted. */
71 bool require_graphics;
74 struct file_handle *handle;
75 char *chart_file_name;
80 struct ll_list preamble_list;
81 struct ll_list token_list;
84 /* Ships the string STR to the driver. */
86 shipout (struct ll_list *list, const char *str, ...)
92 char *s = c_vasnprintf (NULL, &length, str, args);
100 static const struct output_driver_class tex_driver_class;
102 static void tex_output_table (struct tex_driver *, const struct pivot_table *);
104 static struct tex_driver *
105 tex_driver_cast (struct output_driver *driver)
107 assert (driver->class == &tex_driver_class);
108 return UP_CAST (driver, struct tex_driver, driver);
111 static struct driver_option *
112 opt (struct output_driver *d, struct string_map *options, const char *key,
113 const char *default_value)
115 return driver_option_get (d, options, key, default_value);
118 static struct output_driver *
119 tex_create (struct file_handle *fh, enum settings_output_devices device_type,
120 struct string_map *o)
122 struct output_driver *d;
123 struct tex_driver *tex = XZALLOC (struct tex_driver);
124 hmap_init (&tex->macros);
125 ll_init (&tex->preamble_list);
126 ll_init (&tex->token_list);
129 output_driver_init (&tex->driver, &tex_driver_class, fh_get_file_name (fh),
132 tex->chart_file_name = parse_chart_file_name (opt (d, o, "charts",
133 fh_get_file_name (fh)));
135 tex->bg = parse_color (opt (d, o, "background-color", "#FFFFFFFFFFFF"));
136 tex->fg = parse_color (opt (d, o, "foreground-color", "#000000000000"));
138 tex->file = fn_open (tex->handle, "w");
139 if (tex->file == NULL)
141 msg_error (errno, _("error opening output file `%s'"),
142 fh_get_file_name (tex->handle));
149 output_driver_destroy (d);
154 /* Emit all the tokens in LIST to FILE.
155 Then destroy LIST and its contents. */
157 post_process_tokens (FILE *file, struct ll_list *list)
160 struct tex_token *tt;
161 struct tex_token *ttnext;
162 ll_for_each_safe (tt, ttnext, struct tex_token, ll, list)
164 if (tt->cat == CAT_SPACE)
166 /* Count the number of characters up to the next space,
167 and if it'll not fit on to the line, then make a line
170 struct tex_token *prev_x = NULL;
171 for (struct ll *x = ll_next (&tt->ll); x != ll_null (list);
174 struct tex_token *nt = ll_data (x, struct tex_token, ll);
175 if (nt->cat == CAT_SPACE || nt->cat == CAT_EOL)
177 if (prev_x && (prev_x->cat == CAT_COMMENT) && (nt->cat != CAT_COMMENT))
179 word_len += ds_length (&nt->str);
183 if ((word_len < TEX_LINE_MAX) && (line_len + word_len >= TEX_LINE_MAX - 1))
191 line_len += ds_length (&tt->str);
192 if (tt->cat == CAT_EOL)
194 if (line_len >= TEX_LINE_MAX)
197 line_len = ds_length (&tt->str);
199 if (tt->cat == CAT_COMMENT)
201 fputs (ds_cstr (&tt->str), file);
202 ds_destroy (&tt->str);
209 tex_destroy (struct output_driver *driver)
211 struct tex_driver *tex = tex_driver_cast (driver);
213 shipout (&tex->preamble_list, "%%%% TeX output of pspp\n\n");
214 shipout (&tex->preamble_list, "%%%% Define the horizontal space between table columns\n");
215 shipout (&tex->preamble_list, "\\def\\psppcolumnspace{1mm}\n\n");
217 char *ln = get_language ();
219 shipout (&tex->preamble_list, "%%%% Language is \"%s\"\n", ln);
221 shipout (&tex->preamble_list, "\n");
223 shipout (&tex->preamble_list, "%%%% Sets the environment for rendering material in table cell\n");
224 shipout (&tex->preamble_list, "%%%% The parameter is the number of columns in the table\n");
225 shipout (&tex->preamble_list,
226 "\\def\\cell#1{\\normalbaselines\\advance\\hsize by -#1.0\\psppcolumnspace"
227 "\\advance\\hsize by \\psppcolumnspace"
228 "\\divide\\hsize by #1"
229 "\\noindent\\raggedright\\hskip0pt}\n\n");
232 shipout (&tex->preamble_list,
233 "%%%% Render the text centre justified\n"
234 "\\def\\startcentre{\\begingroup\\leftskip=0pt plus 1fil\n"
235 "\\rightskip=\\leftskip\\parfillskip=0pt}\n");
236 shipout (&tex->preamble_list, "\\def\\stopcentre{\\par\\endgroup}\n");
237 shipout (&tex->preamble_list, "\\long\\def\\centre#1{\\startcentre#1\\stopcentre}\n\n");
241 shipout (&tex->preamble_list,
242 "%%%% Render the text right justified\n"
243 "\\def\\startright{\\begingroup\\leftskip=0pt plus 1fil\n"
244 "\\parfillskip=0pt}\n");
245 shipout (&tex->preamble_list, "\\def\\stopright{\\par\\endgroup}\n");
246 shipout (&tex->preamble_list, "\\long\\def\\right#1{\\startright#1\\stopright}\n\n");
249 /* Emit all the macro defintions. */
251 struct tex_macro *next;
252 HMAP_FOR_EACH_SAFE (m, next, struct tex_macro, node, &tex->macros)
254 shipout (&tex->preamble_list, "%s", tex_macro[m->index]);
255 shipout (&tex->preamble_list, "\n\n");
258 hmap_destroy (&tex->macros);
260 if (tex->require_graphics)
261 shipout (&tex->preamble_list, "\\input graphicx\n\n");
263 post_process_tokens (tex->file, &tex->preamble_list);
265 shipout (&tex->token_list, "\n\\bye\n");
267 post_process_tokens (tex->file, &tex->token_list);
269 fn_close (tex->handle, tex->file);
271 free (tex->chart_file_name);
272 fh_unref (tex->handle);
276 /* Ship out TEXT (which must be a UTF-8 encoded string to the driver's output.
277 if TABULAR is true, then this text is within a table. */
279 tex_escape_string (struct tex_driver *tex, const char *text,
282 size_t n = strlen (text);
285 const char *frag = u8_to_tex_fragments (&text, &n, &tex->macros);
286 shipout (&tex->token_list, "%s", frag);
287 if (text[0] != '\0' && tabular && 0 == strcmp (frag, "."))
289 /* Peek ahead to the next code sequence */
291 const char *t = text;
292 const char *next = u8_to_tex_fragments (&t, &nn, &tex->macros);
293 /* If a period followed by whitespace is encountered within tabular
294 material, then it is reasonable to assume, that it is an
295 abbreviation (like "Sig." or "Std. Deviation") rather than the
296 end of a sentance. */
297 if (next && 0 == strcmp (" ", next))
299 shipout (&tex->token_list, "\\ ");
306 tex_submit (struct output_driver *driver, const struct output_item *item)
308 struct tex_driver *tex = tex_driver_cast (driver);
312 case OUTPUT_ITEM_CHART:
313 if (tex->chart_file_name != NULL)
315 char *file_name = xr_draw_png_chart (item->chart,
316 tex->chart_file_name,
319 if (file_name != NULL)
321 //const char *title = chart_item_get_title (chart_item);
322 // printf ("The chart title is %s\n", title);
324 shipout (&tex->token_list, "\\includegraphics{%s}\n", file_name);
325 tex->require_graphics = true;
331 case OUTPUT_ITEM_GROUP:
334 case OUTPUT_ITEM_IMAGE:
336 char *file_name = xr_write_png_image (
337 item->image, tex->chart_file_name, tex->chart_cnt++);
338 if (file_name != NULL)
340 shipout (&tex->token_list, "\\includegraphics{%s}\n", file_name);
341 tex->require_graphics = true;
347 case OUTPUT_ITEM_MESSAGE:
349 char *s = msg_to_string (item->message);
350 tex_escape_string (tex, s, false);
351 shipout (&tex->token_list, "\\par\n");
356 case OUTPUT_ITEM_PAGE_BREAK:
359 case OUTPUT_ITEM_TABLE:
360 tex_output_table (tex, item->table);
363 case OUTPUT_ITEM_TEXT:
365 char *s = text_item_get_plain_text (item);
367 switch (item->text.subtype)
369 case TEXT_ITEM_PAGE_TITLE:
370 shipout (&tex->token_list, "\\headline={\\bf ");
371 tex_escape_string (tex, s, false);
372 shipout (&tex->token_list, "\\hfil}\n");
376 shipout (&tex->token_list, "{\\tt ");
377 tex_escape_string (tex, s, false);
378 shipout (&tex->token_list, "}\\par\n\n");
381 case TEXT_ITEM_SYNTAX:
382 /* So far as I'm aware, this can never happen. */
384 printf ("Unhandled type %d\n", item->text.subtype);
394 tex_put_footnote_markers (struct tex_driver *tex,
395 const struct pivot_table *pt,
396 const struct pivot_value_ex *ex)
398 size_t n_visible = 0;
399 for (size_t i = 0; i < ex->n_footnotes; i++)
401 const struct pivot_footnote *f = pt->footnotes[ex->footnote_indexes[i]];
405 shipout (&tex->token_list, "$^{");
407 char *marker = pivot_footnote_marker_string (f, pt);
408 tex_escape_string (tex, marker, true);
413 shipout (&tex->token_list, "}$");
417 tex_put_table_cell (struct tex_driver *tex, const struct pivot_table *pt,
418 const struct table_cell *cell)
420 struct string s = DS_EMPTY_INITIALIZER;
421 pivot_value_format_body (cell->value, pt, &s);
422 tex_escape_string (tex, ds_cstr (&s), false);
425 tex_put_footnote_markers (tex, pt, pivot_value_ex (cell->value));
429 tex_output_table_layer (struct tex_driver *tex, const struct pivot_table *pt,
430 const size_t *layer_indexes)
432 /* Tables are rendered in TeX with the \halign command.
433 This is described in the TeXbook Ch. 22 */
434 struct table *title, *layers, *body, *caption;
435 struct pivot_footnote **footnotes;
437 pivot_output (pt, layer_indexes, true, &title, &layers, &body,
438 &caption, NULL, &footnotes, &n_footnotes);
440 shipout (&tex->token_list, "\n{\\parindent=0pt\n");
444 shipout (&tex->token_list, "{\\sl ");
445 struct table_cell cell;
446 table_get_cell (caption, 0, 0, &cell);
447 tex_put_table_cell (tex, pt, &cell);
448 shipout (&tex->token_list, "}\n\n");
455 shipout (&tex->token_list, "{\\bf ");
456 struct table_cell cell;
457 table_get_cell (title, 0, 0, &cell);
458 tex_put_table_cell (tex, pt, &cell);
459 shipout (&tex->token_list, "}\\par\n");
464 for (size_t y = 0; y < layers->n[V]; y++)
466 shipout (&tex->token_list, "{");
467 struct table_cell cell;
468 table_get_cell (layers, 0, y, &cell);
469 tex_put_table_cell (tex, pt, &cell);
470 shipout (&tex->token_list, "}\\par\n");
475 shipout (&tex->token_list, "\\offinterlineskip\\halign{\\strut%%\n");
477 /* Generate the preamble */
478 for (int x = 0; x < body->n[H]; ++x)
480 shipout (&tex->token_list, "{\\vbox{\\cell{%d}#}}", body->n[H]);
482 if (x < body->n[H] - 1)
484 shipout (&tex->token_list, "\\hskip\\psppcolumnspace\\hfil");
485 shipout (&tex->token_list, "&\\vrule\n");
488 shipout (&tex->token_list, "\\cr\n");
491 /* Emit the row data */
492 for (int y = 0; y < body->n[V]; y++)
494 enum { H = TABLE_HORZ, V = TABLE_VERT };
495 bool is_column_header = y < body->h[V][0] || y >= body->n[V] - body->h[V][1];
498 for (int x = 0; x < body->n[H];)
500 struct table_cell cell;
502 table_get_cell (body, x, y, &cell);
504 int colspan = table_cell_colspan (&cell);
506 shipout (&tex->token_list, "&");
508 for (int i = 0; i < skipped - colspan; ++i)
509 shipout (&tex->token_list, "&");
512 if (x != cell.d[TABLE_HORZ][0] || y != cell.d[TABLE_VERT][0])
515 /* bool is_header = (y < body->h[V][0] */
516 /* || y >= body->n[V] - body->h[V][1] */
517 /* || x < body->h[H][0] */
518 /* || x >= body->n[H] - body->h[H][1]); */
520 struct string s = DS_EMPTY_INITIALIZER;
521 bool numeric = pivot_value_format_body (cell.value, pt, &s);
523 enum table_halign halign = table_halign_interpret (
524 cell.cell_style->halign, numeric);
526 /* int rowspan = table_cell_rowspan (&cell); */
528 /* if (rowspan > 1) */
529 /* fprintf (tex->file, " rowspan=\"%d\"", rowspan); */
533 shipout (&tex->token_list, "\\multispan{%d}\\span", colspan - 1);
534 shipout (&tex->token_list, "\\hsize=%d.0\\hsize", colspan);
535 shipout (&tex->token_list, "\\advance\\hsize%d.0\\psppcolumnspace ",
539 if (halign == TABLE_HALIGN_CENTER)
540 shipout (&tex->token_list, "\\centre{");
542 if (halign == TABLE_HALIGN_RIGHT)
543 shipout (&tex->token_list, "\\right{");
545 /* Output cell contents. */
546 tex_escape_string (tex, ds_cstr (&s), true);
549 tex_put_footnote_markers (tex, pt, pivot_value_ex (cell.value));
550 if (halign == TABLE_HALIGN_CENTER || halign == TABLE_HALIGN_RIGHT)
552 shipout (&tex->token_list, "}");
556 skipped = x - prev_x;
558 x = cell.d[TABLE_HORZ][1];
560 shipout (&tex->token_list, "\\cr\n");
561 if (is_column_header)
562 shipout (&tex->token_list, "\\noalign{\\hrule\\vskip -\\normalbaselineskip}\\cr\n");
565 shipout (&tex->token_list, "}%% End of \\halign\n");
567 /* Shipout any footnotes. */
569 shipout (&tex->token_list, "\\vskip 0.5ex\n");
571 for (int i = 0; i < n_footnotes; ++i)
573 char *marker = pivot_footnote_marker_string (footnotes[i], pt);
574 char *content = pivot_value_to_string (footnotes[i]->content, pt);
576 shipout (&tex->token_list, "$^{");
577 tex_escape_string (tex, marker, false);
578 shipout (&tex->token_list, "}$");
579 tex_escape_string (tex, content, false);
585 shipout (&tex->token_list, "}\n\\vskip 3ex\n\n");
588 table_unref (layers);
590 table_unref (caption);
595 tex_output_table (struct tex_driver *tex, const struct pivot_table *pt)
597 size_t *layer_indexes;
598 PIVOT_OUTPUT_FOR_EACH_LAYER (layer_indexes, pt, true)
599 tex_output_table_layer (tex, pt, layer_indexes);
602 struct output_driver_factory tex_driver_factory =
603 { "tex", "pspp.tex", tex_create };
605 static const struct output_driver_class tex_driver_class =
608 .destroy = tex_destroy,
609 .submit = tex_submit,