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Contents of /psiconv/trunk/program/psiconv/gen_html4.c

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Revision 142 - (show annotations)
Tue Jan 29 18:38:38 2002 UTC (17 years, 9 months ago) by frodo
File MIME type: text/plain
File size: 17712 byte(s)
(Frodo) DMALLOC support

1 /*
2 * gen_html4.c - Part of psiconv, a PSION 5 data formats converter
3 * Copyright (c) 1999 Andrew Johnson <anjohnson@iee.org>
4 * Portions Copyright (c) 1999 Frodo Looijaard <frodol@dds.nl>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
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., 675 Mass Ave, Cambridge, MA 02139, USA.
19 */
20
21 #include "config.h"
22 #include <stdio.h>
23 #include <string.h>
24 #include <ctype.h>
25 #include <stdlib.h>
26 #include "psiconv/data.h"
27 #include "psiconv/list.h"
28 #include "gen.h"
29 #include "psiconv.h"
30
31 #ifndef TRUE
32 #define TRUE (0==0)
33 #endif
34
35 #ifdef DMALLOC
36 #include "dmalloc.h"
37 #endif
38
39 /*
40 * Various string tables for HTML4 settings
41 */
42
43 /* How to display each character */
44 static const char *char_table[0x100] = {
45 /* 0x00 */ "", "", "", "", "", "", "<BR>\n", "<BR>\n",
46 /* 0x08 */ "\n<HR>\n", "\t", "", "", "", "", "", "",
47 /* 0x10 */ " ", "", "", "", "", "", "", "",
48 /* 0x18 */ "", "", "", "", "", "", "", "",
49 /* 0x20 */ " ", "!", "&quot;", "#", "$", "%", "&amp;", "'",
50 /* 0x28 */ "(", ")", "*", "+", ",", "-", ".", "/",
51 /* 0x30 */ "0", "1", "2", "3", "4", "5", "6", "7",
52 /* 0x38 */ "8", "9", ":", ";", "&lt;", "=", "&gt;", "?",
53 /* 0x40 */ "@", "A", "B", "C", "D", "E", "F", "G",
54 /* 0x48 */ "H", "I", "J", "K", "L", "M", "N", "O",
55 /* 0x50 */ "P", "Q", "R", "S", "T", "U", "V", "W",
56 /* 0x58 */ "X", "Y", "Z", "[", "\\", "]", "^", "_",
57 /* 0x60 */ "`", "a", "b", "c", "d", "e", "f", "g",
58 /* 0x68 */ "h", "i", "j", "k", "l", "m", "n", "o",
59 /* 0x70 */ "p", "q", "r", "s", "t", "u", "v", "w",
60 /* 0x78 */ "x", "y", "z", "{", "|", "}", "~", "",
61 /* 0x80 */ "", "", "&#8218;", "&#402;",
62 "&#8222;", "&#8230;", "&#8224;", "&#8225;",
63 /* 0x88 */ "&#136;", "&#8240;", "&#352;", "<",
64 "&#338;", "", "", "",
65 /* 0x90 */ "", "&#8216;", "&#8217;", "&#8220;",
66 "&#8221;","&#8226;", "&#8211;", "&#8212;",
67 /* 0x98 */ "&#732;", "&#8482;", "&#353;", ">",
68 "&#339;", "", "", "&#376;",
69 /* 0xa0 */ "&nbsp;", "&iexcl;", "&cent;", "&pound;",
70 "&curren;", "&yen;", "&brvbar;", "&sect;",
71 /* 0xa8 */ "&uml;", "&copy;", "&ordf;", "&laquo;",
72 "&not;", "&shy;", "&reg;", "&#175;",
73 /* 0xb0 */ "&deg;", "&plusmn;", "&sup2;", "&sup3;",
74 "&acute;", "&micro;", "&para;", "&middot;",
75 /* 0xb8 */ "&cedil;", "&sup1;", "&ordm;", "&raquo;",
76 "&frac14;", "&frac12;", "&frac34;", "&iquest;",
77 /* 0xc0 */ "&Agrave;", "&Aacute;", "&Acirc;", "&Atilde;",
78 "&Auml;", "&Aring;", "&AElig;", "&Ccedil;",
79 /* 0xc8 */ "&Egrave;", "&Eacute;", "&Ecirc;", "&Euml;",
80 "&Igrave;", "&Iacute;", "&Icirc;", "&Iuml;",
81 /* 0xd0 */ "&ETH;", "&Ntilde;", "&Ograve;", "&Oacute;",
82 "&Ocirc;", "&Otilde;", "&Ouml;", "&times;",
83 /* 0xd8 */ "&Oslash;", "&Ugrave;", "&Uacute;", "&Ucirc;",
84 "&Uuml;", "&Yacute;", "&THORN;", "&szlig;",
85 /* 0xe0 */ "&agrave;", "&aacute;", "&acirc;", "&atilde;",
86 "&auml;", "&aring;", "&aelig;", "&ccedil;",
87 /* 0xe8 */ "&egrave;", "&eacute;", "&ecirc;", "&euml;",
88 "&igrave;", "&iacute;", "&icirc;", "&iuml;",
89 /* 0xf0 */ "&eth;", "&ntilde;", "&ograve;", "&oacute;",
90 "&ocirc;", "&otilde;", "&ouml;", "&divide;",
91 /* 0xf8 */ "&oslash;", "&ugrave;", "&uacute;", "&ucirc;",
92 "&uuml;", "&yacute;", "&thorn;", "&yuml;"
93 };
94
95 /* The order of these must match the enum psiconv_border_kind (data.h) */
96 static const char *border_strings[] = {
97 "none", "solid", "double", "dotted", "dashed", "dashed", "dotted"
98 };
99
100 /* The order of these must match the enum psiconv_justify (data.h) */
101 static const char *justify_strings[] = {
102 "left", "center", "right", "justify"
103 };
104
105 /* The order of these must match the enum psiconv_super_sub (data.h) */
106 static const char *vertical_strings[] = {
107 "baseline", "super", "sub"
108 };
109
110
111 /*
112 * Support routines for particular formatting structures
113 */
114
115 static void fput_name(FILE * of, const char *string) {
116 int i;
117
118 for (i = 0; i < strlen(string); i++)
119 if (isalnum(string[i]))
120 putc(string[i], of);
121 }
122
123 static void fput_text(FILE * of, const char *text, int length, int *pwasspace) {
124 int j;
125 int space;
126
127 for (j = 0; j < length; j++) {
128 space = (text[j] == ' ');
129 if (*pwasspace && space)
130 fputs("&nbsp;", of);
131 else
132 fputs(char_table[(unsigned char) (text[j])], of);
133 *pwasspace = space;
134 }
135 }
136
137 static const char *screenfont_name(psiconv_u8 screenfont)
138 {
139 if (screenfont == psiconv_font_sansserif)
140 return "sans-serif";
141 else if (screenfont == psiconv_font_nonprop)
142 return "monospace";
143 else if (screenfont == psiconv_font_serif)
144 return "serif";
145 else
146 return "serif";
147 }
148
149 static const char *generic_font_family(const char *font_name) {
150 static const char *sans_font_names[] = {
151 "Arial", "Univers", "Sans Serif"
152 };
153 static const char *mono_font_names[] = {
154 "Courier New", "Courier", "Mono", "Lineprinter", "Elite", "Swiss",
155 "Courier (compressed)", "Courier (expanded)", "Letter Gothic"
156 };
157 int i;
158
159 for (i=0; i < sizeof(sans_font_names) / sizeof(sans_font_names[0]); i++)
160 if (!strcmp(font_name, sans_font_names[i]))
161 return "sans-serif";
162
163 for (i=0; i < sizeof(mono_font_names) / sizeof(mono_font_names[0]); i++)
164 if (!strcmp(font_name, mono_font_names[i]))
165 return "monospace";
166
167 return "serif";
168 }
169
170 static int colors_different(
171 const psiconv_color old,
172 const psiconv_color new)
173 {
174 return ((old->red != new->red) ||
175 (old->green != new->green) ||
176 (old->blue != new->blue));
177 }
178
179
180 /* Borders */
181 static int borders_different(
182 const psiconv_border old,
183 const psiconv_border new)
184 {
185 return (!old ||
186 (old->kind != new->kind) ||
187 colors_different(old->color, new->color) ||
188 (old->thickness != new->thickness));
189 }
190
191 static void fput_border(FILE * of,
192 const char *which,
193 const psiconv_border old,
194 const psiconv_border new)
195 {
196 /* If the border changed at all we'll set all parameters, as they're
197 * fairly closely linked and it's much easier to do it this way */
198 if (borders_different(old, new)) {
199 fprintf(of, "border-%s-style:%s;",
200 which, border_strings[new->kind]);
201 if ((new->kind != psiconv_border_none) &&
202 (new->color->red || new->color->green || new->color->blue))
203 fprintf(of, "border-%s-color:#%02x%02x%02x;", which,
204 new->color->red, new->color->green, new->color->blue);
205 if ((new->kind == psiconv_border_solid) ||
206 (new->kind == psiconv_border_double))
207 fprintf(of, "border-%s-width:%.0fpx;",
208 which, (new->thickness / 10.0) - 1);
209 else if (new->kind != psiconv_border_none)
210 fprintf(of, "border-%s-width:1px;", which);
211 }
212 }
213
214 /* Paragraph formats */
215 static int paragraph_layouts_different(
216 const psiconv_paragraph_layout old,
217 const psiconv_paragraph_layout new)
218 {
219 return ((old->space_above != new->space_above) ||
220 (old->indent_right != new->indent_right) ||
221 (old->space_below != new->space_below) ||
222 (old->indent_left != new->indent_left) ||
223 (old->indent_first != new->indent_first) ||
224 (old->justify_hor != new->justify_hor) ||
225 (old->linespacing_exact != new->linespacing_exact) ||
226 borders_different(old->left_border, new->left_border) ||
227 borders_different(old->right_border, new->right_border) ||
228 borders_different(old->top_border, new->top_border) ||
229 borders_different(old->bottom_border, new->bottom_border));
230 }
231
232 static void fput_paragraph_layout(FILE * of,
233 const psiconv_paragraph_layout old,
234 const psiconv_paragraph_layout new)
235 {
236 if (!old || (old->space_above != new->space_above))
237 fprintf(of, "margin-top:%.1fpt;", new->space_above);
238 if (!old || (old->indent_right != new->indent_right))
239 fprintf(of, "margin-right:%.2fcm;", new->indent_right);
240 if (!old || (old->space_below != new->space_below))
241 fprintf(of, "margin-bottom:%.1fpt;", new->space_below);
242 if (!old ||
243 (old->bullet->on != new->bullet->on) ||
244 (old->bullet->indent != new->bullet->indent) ||
245 (old->indent_left != new->indent_left) ||
246 (old->indent_first != new->indent_first)) {
247 psiconv_length_t indent = new->indent_first;
248 psiconv_length_t margin = new->indent_left;
249 /* Bullets with indent set cause strange margin behaviour: */
250 if (new->bullet->on && new->bullet->indent) {
251 if (indent > 0.0) {
252 margin += indent;
253 indent = new->indent_left - indent;
254 }
255 }
256 fprintf(of, "margin-left:%.2fcm;", margin);
257 fprintf(of, "text-indent:%.2fcm;", indent);
258 }
259 if (!old || (old->justify_hor != new->justify_hor))
260 fprintf(of, "text-align:%s;", justify_strings[new->justify_hor]);
261 if (!old || (old->linespacing_exact != new->linespacing_exact)) {
262 if (!old || old->linespacing_exact)
263 fputs("line-height:normal;", of);
264 else
265 fprintf(of, "line-height:%.1fpt;", new->linespacing);
266 }
267 fput_border(of, "left", old ? old->left_border : NULL,
268 new->left_border);
269 fput_border(of, "right", old ? old->right_border : NULL,
270 new->right_border);
271 fput_border(of, "top", old ? old->top_border : NULL,
272 new->top_border);
273 fput_border(of, "bottom", old ? old->bottom_border : NULL,
274 new->bottom_border);
275 }
276
277 /* Character formats */
278 static int character_layouts_different(
279 const psiconv_character_layout old,
280 const psiconv_character_layout new)
281 {
282 return ((old->font->screenfont != new->font->screenfont) ||
283 (strcmp(old->font->name,new->font->name)) ||
284 (old->font_size != new->font_size) ||
285 (old->color->red != new->color->red) ||
286 (old->color->green != new->color->green) ||
287 (old->color->blue != new->color->blue) ||
288 (old->back_color->red != new->back_color->red) ||
289 (old->back_color->green != new->back_color->green) ||
290 (old->back_color->blue != new->back_color->blue) ||
291 (old->italic != new->italic) ||
292 (old->bold != new->bold) ||
293 (old->super_sub != new->super_sub) ||
294 (old->underline != new->underline) ||
295 (old->strikethrough != new->strikethrough));
296 }
297
298 static void fput_character_layout(FILE * of,
299 const psiconv_character_layout old,
300 const psiconv_character_layout new,
301 psiconv_word_f wf)
302 {
303 if (!old || (old->font->screenfont != new->font->screenfont) ||
304 strcmp(old->font->name,new->font->name)) {
305 fprintf(of, "font-family:%s,%s,%s;", new->font->name,
306 generic_font_family(new->font->name),
307 screenfont_name(new->font->screenfont));
308 }
309 if (!old || (old->font_size != new->font_size))
310 fprintf(of, "font-size:%.1f%%;", 100.0 * new->font_size / 10.0);
311 if (!old || (old->bold != new->bold))
312 fprintf(of, "font-weight:%s;", new->bold ? "bold" : "normal");
313 if (!old || (old->italic != new->italic))
314 fprintf(of, "font-style:%s;", new->italic ? "italic" : "normal");
315 if (!old || (colors_different(old->color, new->color)))
316 fprintf(of, "color:#%02x%02x%02x;",
317 new->color->red, new->color->green, new->color->blue);
318 if (!old || (colors_different(old->back_color, new->back_color)))
319 fprintf(of, "background-color:#%02x%02x%02x;",
320 new->back_color->red, new->back_color->green, new->back_color->blue);
321 if (!old || (old->super_sub != new->super_sub))
322 fprintf(of, "vertical-align:%s;", vertical_strings[new->super_sub]);
323 if (!old || (old->underline != new->underline) ||
324 (old->strikethrough != new->strikethrough)) {
325 fputs("text-decoration:", of);
326 if (new->strikethrough)
327 fputs("line-through ", of);
328 if (new->underline)
329 fputs("underline", of);
330 else if (!new->strikethrough)
331 fputs("none", of);
332 fputs(";", of);
333 }
334 }
335
336
337 /* Formatted paragraphs */
338 static void fput_para(FILE * of,
339 const psiconv_paragraph para,
340 psiconv_word_f wf)
341 {
342 psiconv_paragraph_layout base_para = para->base_paragraph;
343 psiconv_character_layout base_char = para->base_character;
344 psiconv_character_layout cur_char;
345 psiconv_character_layout *layout_stack;
346 psiconv_in_line_layout inl;
347 psiconv_word_style sty;
348 int spans = 0;
349 int wasspace = 0;
350 int i, j, loc;
351
352 layout_stack = calloc(psiconv_list_length(para->in_lines),
353 sizeof(*layout_stack));
354 fputs("<P", of);
355 sty = psiconv_get_style(wf->styles_sec, para->base_style);
356 cur_char = sty->character;
357
358 if (sty->name) {
359 fputs(" CLASS=\"", of);
360 fput_name(of, sty->name);
361 putc('"', of);
362 }
363
364 if (paragraph_layouts_different(sty->paragraph, base_para) ||
365 character_layouts_different(cur_char, base_char)) {
366 fputs(" STYLE=\"", of);
367 fput_paragraph_layout(of, sty->paragraph, base_para);
368 fput_character_layout(of, cur_char, base_char, wf);
369 cur_char = base_char;
370 putc('"', of);
371 }
372 putc('>', of);
373
374 if (base_para->bullet->on) {
375 fputs("<SPAN STYLE=\"", of);
376 if (base_para->bullet->font != base_char->font) {
377 fprintf(of, "font-family:%s,%s,%s;",
378 base_para->bullet->font->name,
379 generic_font_family(base_para->bullet->font->name),
380 screenfont_name(base_para->bullet->font->screenfont));
381 }
382 if (base_para->bullet->font_size != base_char->font_size)
383 fprintf(of, "font-size:%.1f%%;",
384 100.0 * base_para->bullet->font_size / 10.0);
385 if ((base_para->bullet->color->red != base_char->color->red) ||
386 (base_para->bullet->color->green != base_char->color->green) ||
387 (base_para->bullet->color->blue != base_char->color->blue))
388 fprintf(of, "color:#%02x%02x%02x;",
389 base_para->bullet->color->red,
390 base_para->bullet->color->green,
391 base_para->bullet->color->blue);
392 fprintf(of, "\">%s </SPAN>",
393 char_table[base_para->bullet->character]);
394 wasspace = TRUE;
395 }
396
397 loc = 0;
398 for (i = 0; i < psiconv_list_length(para->in_lines); i++) {
399 inl = psiconv_list_get(para->in_lines, i);
400 if (character_layouts_different(cur_char, inl->layout)) {
401 for (j = 0; j < spans; j++)
402 if (!character_layouts_different(inl->layout, layout_stack[j]))
403 break;
404 if (j < spans) {
405 while (spans > j) {
406 fputs("</SPAN>",of);
407 spans--;
408 }
409 } else {
410 fputs("<SPAN STYLE=\"", of);
411 fput_character_layout(of, cur_char, inl->layout, wf);
412 fputs("\">",of);
413 layout_stack[spans++] = cur_char;
414 }
415 cur_char = inl->layout;
416 }
417 fput_text(of, &para->text[loc], inl->length, &wasspace);
418 loc += inl->length;
419 }
420
421 while (spans > 0) {
422 fputs("</SPAN>",of);
423 spans--;
424 }
425
426 if (loc < strlen(para->text)) {
427 fput_text(of, &para->text[loc], strlen(para->text) - loc, &wasspace);
428 }
429
430 if (strlen(para->text) == 0)
431 fputs("&nbsp;", of);
432
433 fputs("</P>\n", of);
434 free(layout_stack);
435 }
436
437 static void fput_style(FILE * of,
438 const psiconv_word_style normal,
439 const psiconv_word_style sty,
440 psiconv_word_f wf)
441 {
442 if (sty->name == NULL)
443 fputs(" P {", of);
444 else {
445 fputs(" P.", of);
446 fput_name(of, sty->name);
447 fputs(" {", of);
448 }
449 fput_paragraph_layout(of, normal ? normal->paragraph : NULL, sty->paragraph);
450 fput_character_layout(of, normal ? normal->character : NULL, sty->character, wf);
451 fputs("}\n", of);
452 }
453
454 static int psiconv_gen_html4(const char *filename, const psiconv_file file,
455 const char *dest)
456 {
457 FILE * of;
458 int i;
459 psiconv_paragraph para;
460 psiconv_word_style normal, sty;
461 psiconv_word_f wf;
462
463 if (file->type == psiconv_word_file)
464 wf = file->file;
465 else {
466 /* Fall back on the normal HTML generator */
467 return psiconv_gen_html(filename,file,dest);
468 }
469
470 if (! (of = fopen(filename,"w")))
471 return -1;
472
473 fputs("<!doctype html public \"-//W3C//DTD HTML 4.0 STRICT//EN\">", of);
474 fputs("\n<HTML>\n<HEAD>\n <META NAME=\"GENERATOR\"", of);
475 fputs(" CONTENT=\"psiconv-" VERSION "\">\n", of);
476
477 if (wf->page_sec->header->text) {
478 if (psiconv_list_length(wf->page_sec->header->text->paragraphs) > 0) {
479 fputs(" <TITLE>", of);
480 para = psiconv_list_get(wf->page_sec->header->text->paragraphs, 0);
481 i = 0;
482 fput_text(of, para->text, strlen(para->text), &i);
483 fputs("</TITLE>\n", of);
484 }
485 }
486
487 normal = wf->styles_sec->normal;
488 fputs(" <STYLE TYPE=\"text/css\"><!--\n", of);
489 fprintf(of," BODY { background-color: #%02x%02x%02x }\n",
490 normal->paragraph->back_color->red,
491 normal->paragraph->back_color->green,
492 normal->paragraph->back_color->blue);
493 fput_style(of, NULL, normal, wf);
494 for (i = 0; i < psiconv_list_length(wf->styles_sec->styles); i++) {
495 sty = psiconv_list_get(wf->styles_sec->styles, i);
496 fput_style(of, normal, sty, wf);
497 }
498 fputs(" --></STYLE>\n</HEAD>\n<BODY>\n", of);
499 if (wf->page_sec->header->text) {
500 for (i = 0; i < psiconv_list_length(wf->paragraphs); i++) {
501 para = psiconv_list_get(wf->paragraphs, i);
502 fput_para(of, para, wf);
503 }
504 }
505 fputs("</BODY>\n</HTML>\n", of);
506
507 return fclose(of);
508 }
509
510 static struct psiconv_fileformat_s ff =
511 {
512 "HTML4",
513 "HTML 4.0 with cascading style sheets",
514 psiconv_gen_html4
515 };
516
517 void init_html4(void)
518 {
519 psiconv_list_add(fileformat_list,&ff);
520 }
521

frodo@frodo.looijaard.name
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