1 /* PSPP - a program for statistical analysis.
2 Copyright (C) 1997-9, 2000, 2009, 2010, 2011, 2012, 2013, 2014, 2017,
3 2020 Free Software Foundation, Inc.
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU 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, see <http://www.gnu.org/licenses/>. */
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/i18n.h"
34 #include "libpspp/message.h"
35 #include "libpspp/version.h"
37 #include "output/cairo-chart.h"
39 #include "output/chart-item.h"
40 #include "output/driver-provider.h"
41 #include "output/message-item.h"
42 #include "output/options.h"
43 #include "output/output-item-provider.h"
44 #include "output/table-provider.h"
45 #include "output/table-item.h"
46 #include "output/text-item.h"
48 #include "gl/minmax.h"
49 #include "gl/xalloc.h"
52 #define _(msgid) gettext (msgid)
54 /* This file uses TABLE_HORZ and TABLE_VERT enough to warrant abbreviating. */
60 struct output_driver driver;
65 struct file_handle *handle;
66 char *chart_file_name;
76 static const struct output_driver_class html_driver_class;
78 static void html_output_table (struct html_driver *, const struct table_item *);
79 static void escape_string (FILE *file, const char *text,
80 const char *space, const char *newline);
81 static void print_title_tag (FILE *file, const char *name,
84 static struct html_driver *
85 html_driver_cast (struct output_driver *driver)
87 assert (driver->class == &html_driver_class);
88 return UP_CAST (driver, struct html_driver, driver);
91 static struct driver_option *
92 opt (struct output_driver *d, struct string_map *options, const char *key,
93 const char *default_value)
95 return driver_option_get (d, options, key, default_value);
99 put_header (struct html_driver *html)
101 fputs ("<!doctype html>\n", html->file);
102 fprintf (html->file, "<html");
103 char *ln = get_language ();
105 fprintf (html->file, " lang=\"%s\"", ln);
107 fprintf (html->file, ">\n");
108 fputs ("<head>\n", html->file);
109 print_title_tag (html->file, "title", _("PSPP Output"));
110 fprintf (html->file, "<meta name=\"generator\" content=\"%s\">\n", version);
111 fputs ("<meta http-equiv=\"content-type\" "
112 "content=\"text/html; charset=utf-8\">\n", html->file);
119 " background: white;\n"
121 " padding: 0em 12em 0em 3em;\n"
125 " margin: 0pt 0pt 0pt 0em\n"
128 " text-indent: 1.5em;\n"
131 " font-size: 150%;\n"
132 " margin-left: -1.33em\n"
135 " font-size: 125%;\n"
136 " font-weight: bold;\n"
137 " margin-left: -.8em\n"
140 " font-size: 100%;\n"
141 " font-weight: bold;\n"
142 " margin-left: -.5em }\n"
144 " font-size: 100%;\n"
145 " margin-left: 0em\n"
147 "h1, h2, h3, h4, h5, h6 {\n"
148 " font-family: sans-serif;\n"
155 " font-family: sans-serif\n"
158 " border-collapse: collapse;\n"
159 " margin-bottom: 1em\n"
162 " text-align: left\n"
164 "th { font-weight: normal }\n"
178 fputs ("</head>\n", html->file);
179 fputs ("<body>\n", html->file);
182 static struct output_driver *
183 html_create (struct file_handle *fh, enum settings_output_devices device_type,
184 struct string_map *o)
186 struct output_driver *d;
187 struct html_driver *html;
189 html = xzalloc (sizeof *html);
191 output_driver_init (&html->driver, &html_driver_class, fh_get_file_name (fh),
193 html->bare = parse_boolean (opt (d, o, "bare", "false"));
194 html->css = parse_boolean (opt (d, o, "css", "true"));
195 html->borders = parse_boolean (opt (d, o, "borders", "true"));
198 html->chart_file_name = parse_chart_file_name (opt (d, o, "charts",
199 fh_get_file_name (fh)));
203 html->bg = parse_color (opt (d, o, "background-color", "#FFFFFFFFFFFF"));
204 html->fg = parse_color (opt (d, o, "foreground-color", "#000000000000"));
206 html->file = fn_open (html->handle, "w");
207 if (html->file == NULL)
209 msg_error (errno, _("error opening output file `%s'"), fh_get_file_name (html->handle));
219 output_driver_destroy (d);
223 /* Emits <NAME>CONTENT</NAME> to the output, escaping CONTENT as
224 necessary for HTML. */
226 print_title_tag (FILE *file, const char *name, const char *content)
230 fprintf (file, "<%s>", name);
231 escape_string (file, content, " ", " - ");
232 fprintf (file, "</%s>\n", name);
237 html_destroy (struct output_driver *driver)
239 struct html_driver *html = html_driver_cast (driver);
241 if (html->file != NULL)
247 "<!-- end of file -->\n");
248 fn_close (html->handle, html->file);
250 free (html->chart_file_name);
251 fh_unref (html->handle);
256 html_submit (struct output_driver *driver,
257 const struct output_item *output_item)
259 struct html_driver *html = html_driver_cast (driver);
261 if (is_table_item (output_item))
263 struct table_item *table_item = to_table_item (output_item);
264 html_output_table (html, table_item);
267 else if (is_chart_item (output_item) && html->chart_file_name != NULL)
269 struct chart_item *chart_item = to_chart_item (output_item);
272 file_name = xr_draw_png_chart (chart_item, html->chart_file_name,
277 if (file_name != NULL)
279 const char *title = chart_item_get_title (chart_item);
280 fprintf (html->file, "<img src=\"%s\" alt=\"chart: %s\">",
281 file_name, title ? title : _("No description"));
285 #endif /* HAVE_CAIRO */
286 else if (is_text_item (output_item))
288 struct text_item *text_item = to_text_item (output_item);
289 const char *s = text_item_get_text (text_item);
291 switch (text_item_get_type (text_item))
293 case TEXT_ITEM_PAGE_TITLE:
296 case TEXT_ITEM_TITLE:
298 int level = MIN (5, output_get_group_level ()) + 1;
299 char tag[3] = { 'H', level + '1', '\0' };
300 print_title_tag (html->file, tag, s);
304 case TEXT_ITEM_SYNTAX:
305 fprintf (html->file, "<pre class=\"syntax\">");
306 escape_string (html->file, s, " ", "<br>");
307 fprintf (html->file, "</pre>\n");
311 fprintf (html->file, "<p>");
312 escape_string (html->file, s, " ", "<br>");
313 fprintf (html->file, "</p>\n");
317 else if (is_message_item (output_item))
319 const struct message_item *message_item = to_message_item (output_item);
320 char *s = msg_to_string (message_item_get_msg (message_item));
321 fprintf (html->file, "<p>");
322 escape_string (html->file, s, " ", "<br>");
323 fprintf (html->file, "</p>\n");
328 /* Write TEXT to file F, escaping characters as necessary for HTML. Spaces are
329 replaced by SPACE, which should be " " or " " New-lines are replaced by
330 NEWLINE, which might be "<BR>" or "\n" or something else appropriate. */
332 escape_string (FILE *file, const char *text,
333 const char *space, const char *newline)
343 fputs (newline, file);
346 fputs ("&", file);
349 fputs ("<", file);
352 fputs (">", file);
358 fputs (""", file);
368 escape_tag (FILE *file, const char *tag,
369 const char *text, const char *space, const char *newline)
374 fprintf (file, "<%s>", tag);
375 escape_string (file, text, space, newline);
376 fprintf (file, "</%s>", tag);
380 border_to_css (int border)
384 case TABLE_STROKE_NONE:
387 case TABLE_STROKE_SOLID:
390 case TABLE_STROKE_DASHED:
393 case TABLE_STROKE_THICK:
394 return "thick solid";
396 case TABLE_STROKE_THIN:
399 case TABLE_STROKE_DOUBLE:
415 style_start (struct css_style *cs, FILE *file)
417 *cs = (struct css_style) {
424 style_end (struct css_style *cs)
426 if (cs->n_styles > 0)
427 fputs ("'", cs->file);
431 next_style (struct css_style *st)
433 bool first = !st->n_styles++;
434 fputs (first ? " style='" : "; ", st->file);
438 put_style (struct css_style *st, const char *name, const char *value)
441 fprintf (st->file, "%s: %s", name, value);
445 format_color (const struct cell_color color,
446 const struct cell_color default_color,
447 char *buf, size_t bufsize)
449 bool retval = !cell_color_equal (&color, &default_color);
452 if (color.alpha == 255)
453 snprintf (buf, bufsize, "#%02x%02x%02x", color.r, color.g, color.b);
455 snprintf (buf, bufsize, "rgba(%d, %d, %d, %.3f)",
456 color.r, color.g, color.b, color.alpha / 255.0);
462 put_border (const struct table *table, const struct table_cell *cell,
463 struct css_style *style,
464 enum table_axis axis, int h, int v,
465 const char *border_name)
467 struct cell_color color;
468 const char *css = border_to_css (
469 table_get_rule (table, axis, cell->d[H][h], cell->d[V][v], &color));
473 fprintf (style->file, "border-%s: %s", border_name, css);
476 if (format_color (color, (struct cell_color) CELL_COLOR_BLACK,
478 fprintf (style->file, " %s", buf);
483 put_tfoot (struct html_driver *html, const struct table *t, bool *tfoot)
487 fputs ("<tfoot>\n", html->file);
488 fputs ("<tr>\n", html->file);
489 fprintf (html->file, "<td colspan=%d>\n", t->n[H]);
493 fputs ("\n<br>", html->file);
497 html_put_footnote_markers (struct html_driver *html,
498 struct footnote **footnotes,
503 fputs ("<sup>", html->file);
504 for (size_t i = 0; i < n_footnotes; i++)
506 const struct footnote *f = footnotes[i];
509 putc (',', html->file);
510 escape_string (html->file, f->marker, " ", "<br>");
512 fputs ("</sup>", html->file);
517 html_put_table_cell_text (struct html_driver *html,
518 const struct table_cell *cell)
520 const char *s = cell->text;
521 s += strspn (s, CC_SPACES);
522 escape_string (html->file, s, " ", "<br>");
524 if (cell->n_subscripts)
526 fputs ("<sub>", html->file);
527 for (size_t i = 0; i < cell->n_subscripts; i++)
530 putc (',', html->file);
531 escape_string (html->file, cell->subscripts[i],
534 fputs ("</sub>", html->file);
536 html_put_footnote_markers (html, cell->footnotes, cell->n_footnotes);
540 html_put_table_item_layers (struct html_driver *html,
541 const struct table_item_layers *layers)
543 for (size_t i = 0; i < layers->n_layers; i++)
546 fputs ("<br>\n", html->file);
548 const struct table_item_layer *layer = &layers->layers[i];
549 escape_string (html->file, layer->content, " ", "<br>");
550 html_put_footnote_markers (html, layer->footnotes, layer->n_footnotes);
555 html_put_table_cell (struct html_driver *html, const struct table *t,
556 const struct table_cell *cell, const char *tag,
559 fprintf (html->file, "<%s", tag);
561 struct css_style style;
562 style_start (&style, html->file);
563 enum table_halign halign = table_halign_interpret (
564 cell->style->cell_style.halign, cell->options & TAB_NUMERIC);
568 case TABLE_HALIGN_RIGHT:
569 put_style (&style, "text-align", "right");
571 case TABLE_HALIGN_CENTER:
572 put_style (&style, "text-align", "center");
579 if (cell->options & TAB_ROTATE)
580 put_style (&style, "writing-mode", "sideways-lr");
582 if (cell->style->cell_style.valign != TABLE_VALIGN_TOP)
584 put_style (&style, "vertical-align",
585 (cell->style->cell_style.valign == TABLE_VALIGN_BOTTOM
586 ? "bottom" : "middle"));
589 const struct font_style *fs = &cell->style->font_style;
591 if (format_color (fs->bg[cell->d[V][0] % 2],
592 (struct cell_color) CELL_COLOR_WHITE,
593 bgcolor, sizeof bgcolor))
594 put_style (&style, "background", bgcolor);
597 if (format_color (fs->fg[cell->d[V][0] % 2],
598 (struct cell_color) CELL_COLOR_BLACK,
599 fgcolor, sizeof fgcolor))
600 put_style (&style, "color", fgcolor);
604 put_style (&style, "font-family", "\"");
605 escape_string (html->file, fs->typeface, " ", "\n");
606 putc ('"', html->file);
609 put_style (&style, "font-weight", "bold");
611 put_style (&style, "font-style", "italic");
613 put_style (&style, "text-decoration", "underline");
617 snprintf (buf, sizeof buf, "%dpt", fs->size);
618 put_style (&style, "font-size", buf);
623 put_border (t, cell, &style, V, 0, 0, "top");
624 put_border (t, cell, &style, H, 0, 0, "left");
626 if (cell->d[V][1] == t->n[V])
627 put_border (t, cell, &style, V, 0, 1, "bottom");
628 if (cell->d[H][1] == t->n[H])
629 put_border (t, cell, &style, H, 1, 0, "right");
633 int colspan = table_cell_colspan (cell);
635 fprintf (html->file, " colspan=\"%d\"", colspan);
637 int rowspan = table_cell_rowspan (cell);
639 fprintf (html->file, " rowspan=\"%d\"", rowspan);
641 putc ('>', html->file);
643 html_put_table_cell_text (html, cell);
645 /* output </th> or </td>. */
646 fprintf (html->file, "</%s>\n", tag);
650 html_output_table (struct html_driver *html, const struct table_item *item)
652 const struct table *t = table_item_get_table (item);
655 fputs ("<table", html->file);
658 fputs (" title=\"", html->file);
659 escape_string (html->file, item->notes, " ", "\n");
660 putc ('"', html->file);
662 fputs (">\n", html->file);
664 const struct table_cell *caption = table_item_get_caption (item);
667 put_tfoot (html, t, &tfoot);
668 html_put_table_cell (html, t, caption, "span", false);
671 size_t n_footnotes = table_collect_footnotes (item, &f);
673 for (size_t i = 0; i < n_footnotes; i++)
675 put_tfoot (html, t, &tfoot);
676 escape_tag (html->file, "sup", f[i]->marker, " ", "<br>");
677 escape_string (html->file, f[i]->content, " ", "<br>");
682 fputs ("</td>\n", html->file);
683 fputs ("</tr>\n", html->file);
684 fputs ("</tfoot>\n", html->file);
687 const struct table_cell *title = table_item_get_title (item);
688 const struct table_item_layers *layers = table_item_get_layers (item);
691 fputs ("<caption>", html->file);
693 html_put_table_cell (html, t, title, "span", false);
695 fputs ("<br>\n", html->file);
697 html_put_table_item_layers (html, layers);
698 fputs ("</caption>\n", html->file);
701 fputs ("<tbody>\n", html->file);
703 for (int y = 0; y < t->n[V]; y++)
705 fputs ("<tr>\n", html->file);
706 for (int x = 0; x < t->n[H]; )
708 struct table_cell cell;
709 table_get_cell (t, x, y, &cell);
710 if (x == cell.d[TABLE_HORZ][0] && y == cell.d[TABLE_VERT][0])
712 bool is_header = (y < t->h[V][0]
713 || y >= t->n[V] - t->h[V][1]
715 || x >= t->n[H] - t->h[H][1]);
716 const char *tag = is_header ? "th" : "td";
717 html_put_table_cell (html, t, &cell, tag, html->borders);
720 x = cell.d[TABLE_HORZ][1];
722 fputs ("</tr>\n", html->file);
725 fputs ("</tbody>\n", html->file);
726 fputs ("</table>\n\n", html->file);
729 struct output_driver_factory html_driver_factory =
730 { "html", "pspp.html", html_create };
732 static const struct output_driver_class html_driver_class =