43341922 |
1 | /* |
2 | * PDF backend for Halibut |
3 | */ |
4 | |
5 | #include <assert.h> |
6 | #include "halibut.h" |
7 | #include "paper.h" |
8 | |
9 | #define TREE_BRANCH 2 /* max branching factor in page tree */ |
10 | |
11 | paragraph *pdf_config_filename(char *filename) |
12 | { |
e4ea58f8 |
13 | return cmdline_cfg_simple("pdf-filename", filename, NULL); |
43341922 |
14 | } |
15 | |
16 | typedef struct object_Tag object; |
17 | typedef struct objlist_Tag objlist; |
18 | |
19 | struct object_Tag { |
20 | objlist *list; |
21 | object *next; |
22 | int number; |
23 | rdstringc main, stream; |
24 | int size, fileoff; |
25 | char *final; |
26 | }; |
27 | |
28 | struct objlist_Tag { |
29 | int number; |
30 | object *head, *tail; |
31 | }; |
32 | |
33 | static object *new_object(objlist *list); |
34 | static void objtext(object *o, char const *text); |
35 | static void objstream(object *o, char const *text); |
7c8c4239 |
36 | static void pdf_string(void (*add)(object *, char const *), |
37 | object *, char const *); |
ce1b04aa |
38 | static void pdf_string_len(void (*add)(object *, char const *), |
39 | object *, char const *, int); |
43341922 |
40 | static void objref(object *o, object *dest); |
41 | |
42 | static void make_pages_node(object *node, object *parent, page_data *first, |
2ff8419e |
43 | page_data *last, object *resources, |
44 | object *mediabox); |
f0e51ce1 |
45 | static int make_outline(object *parent, outline_element *start, int n, |
46 | int open); |
09358aa7 |
47 | static int pdf_versionid(FILE *fp, word *words); |
43341922 |
48 | |
49 | void pdf_backend(paragraph *sourceform, keywordlist *keywords, |
50 | indexdata *idx, void *vdoc) { |
51 | document *doc = (document *)vdoc; |
52 | int font_index; |
53 | font_encoding *fe; |
54 | page_data *page; |
55 | int pageno; |
56 | FILE *fp; |
57 | char *filename; |
58 | paragraph *p; |
59 | objlist olist; |
2ff8419e |
60 | object *o, *cat, *outlines, *pages, *resources, *mediabox; |
43341922 |
61 | int fileoff; |
62 | |
63 | IGNORE(keywords); |
64 | IGNORE(idx); |
65 | |
66 | filename = dupstr("output.pdf"); |
67 | for (p = sourceform; p; p = p->next) { |
7738a2fb |
68 | if (p->type == para_Config) { |
43341922 |
69 | if (!ustricmp(p->keyword, L"pdf-filename")) { |
70 | sfree(filename); |
e4ea58f8 |
71 | filename = dupstr(adv(p->origkeyword)); |
43341922 |
72 | } |
73 | } |
74 | } |
75 | |
76 | olist.head = olist.tail = NULL; |
77 | olist.number = 1; |
78 | |
79 | cat = new_object(&olist); |
a615a778 |
80 | if (doc->n_outline_elements > 0) |
81 | outlines = new_object(&olist); |
82 | else |
83 | outlines = NULL; |
43341922 |
84 | pages = new_object(&olist); |
85 | resources = new_object(&olist); |
86 | |
87 | /* |
43341922 |
88 | * The catalogue just contains references to the outlines and |
89 | * pages objects. |
90 | */ |
a615a778 |
91 | objtext(cat, "<<\n/Type /Catalog"); |
92 | if (outlines) { |
93 | objtext(cat, "\n/Outlines "); |
94 | objref(cat, outlines); |
95 | } |
43341922 |
96 | objtext(cat, "\n/Pages "); |
97 | objref(cat, pages); |
a615a778 |
98 | if (outlines) |
99 | objtext(cat, "\n/PageMode /UseOutlines"); |
100 | objtext(cat, "\n>>\n"); |
43341922 |
101 | |
102 | /* |
103 | * Set up the resources dictionary, which mostly means |
104 | * providing all the font objects and names to call them by. |
105 | */ |
106 | font_index = 0; |
107 | objtext(resources, "<<\n/Font <<\n"); |
108 | for (fe = doc->fonts->head; fe; fe = fe->next) { |
109 | char fname[40]; |
110 | int i; |
111 | object *font; |
112 | |
113 | sprintf(fname, "f%d", font_index++); |
114 | fe->name = dupstr(fname); |
115 | |
116 | font = new_object(&olist); |
117 | |
118 | objtext(resources, "/"); |
119 | objtext(resources, fe->name); |
120 | objtext(resources, " "); |
121 | objref(resources, font); |
122 | objtext(resources, "\n"); |
123 | |
124 | objtext(font, "<<\n/Type /Font\n/Subtype /Type1\n/Name /"); |
125 | objtext(font, fe->name); |
126 | objtext(font, "\n/BaseFont /"); |
127 | objtext(font, fe->font->name); |
128 | objtext(font, "\n/Encoding <<\n/Type /Encoding\n/Differences ["); |
129 | |
130 | for (i = 0; i < 256; i++) { |
131 | char buf[20]; |
132 | if (!fe->vector[i]) |
133 | continue; |
134 | sprintf(buf, "\n%d /", i); |
135 | objtext(font, buf); |
136 | objtext(font, fe->vector[i] ? fe->vector[i] : ".notdef"); |
137 | } |
138 | |
139 | objtext(font, "\n]\n>>\n"); |
140 | |
141 | { |
142 | object *widths = new_object(&olist); |
143 | objtext(font, "/FirstChar 0\n/LastChar 255\n/Widths "); |
144 | objref(font, widths); |
145 | objtext(font, "\n"); |
146 | objtext(widths, "[\n"); |
147 | for (i = 0; i < 256; i++) { |
148 | char buf[80]; |
149 | double width; |
150 | if (fe->indices[i] < 0) |
151 | width = 0.0; |
152 | else |
153 | width = fe->font->widths[fe->indices[i]]; |
17c71b41 |
154 | sprintf(buf, "%g\n", 1000.0 * width / FUNITS_PER_PT); |
43341922 |
155 | objtext(widths, buf); |
156 | } |
157 | objtext(widths, "]\n"); |
158 | } |
159 | |
160 | objtext(font, ">>\n"); |
161 | } |
162 | objtext(resources, ">>\n>>\n"); |
163 | |
2ff8419e |
164 | { |
165 | char buf[255]; |
166 | mediabox = new_object(&olist); |
167 | sprintf(buf, "[0 0 %g %g]\n", |
168 | doc->paper_width / FUNITS_PER_PT, |
169 | doc->paper_height / FUNITS_PER_PT); |
170 | objtext(mediabox, buf); |
171 | } |
172 | |
43341922 |
173 | /* |
174 | * Define the page objects for each page, and get each one |
175 | * ready to have a `Parent' specification added to it. |
176 | */ |
177 | for (page = doc->pages; page; page = page->next) { |
178 | object *opage; |
179 | |
180 | opage = new_object(&olist); |
181 | page->spare = opage; |
182 | objtext(opage, "<<\n/Type /Page\n"); |
183 | } |
184 | |
185 | /* |
186 | * Recursively build the page tree. |
187 | */ |
2ff8419e |
188 | make_pages_node(pages, NULL, doc->pages, NULL, resources, mediabox); |
43341922 |
189 | |
190 | /* |
191 | * Create and render the individual pages. |
192 | */ |
193 | pageno = 0; |
194 | for (page = doc->pages; page; page = page->next) { |
195 | object *opage, *cstr; |
23765aeb |
196 | rect *r; |
7c8c4239 |
197 | text_fragment *frag, *frag_end; |
43341922 |
198 | char buf[256]; |
7c8c4239 |
199 | int x, y, lx, ly; |
43341922 |
200 | |
201 | opage = (object *)page->spare; |
202 | /* |
203 | * At this point the page dictionary is already |
204 | * half-written, with /Type and /Parent already present. We |
205 | * continue from there. |
206 | */ |
207 | |
208 | /* |
209 | * The PDF spec says /Resources is required, but also says |
210 | * that it's inheritable and may be omitted if it's present |
211 | * in a Pages node. In our case it is: it's present in the |
212 | * topmost /Pages node because we carefully put it there. |
2ff8419e |
213 | * So we don't need a /Resources entry here. The same applies |
214 | * to /MediaBox. |
43341922 |
215 | */ |
43341922 |
216 | |
217 | /* |
218 | * Now we're ready to define a content stream containing |
219 | * the actual text on the page. |
220 | */ |
221 | cstr = new_object(&olist); |
222 | objtext(opage, "/Contents "); |
223 | objref(opage, cstr); |
224 | objtext(opage, "\n"); |
225 | |
23765aeb |
226 | /* |
227 | * Render any rectangles on the page. |
228 | */ |
229 | for (r = page->first_rect; r; r = r->next) { |
230 | char buf[512]; |
17c71b41 |
231 | sprintf(buf, "%g %g %g %g re f\n", |
232 | r->x / FUNITS_PER_PT, r->y / FUNITS_PER_PT, |
233 | r->w / FUNITS_PER_PT, r->h / FUNITS_PER_PT); |
23765aeb |
234 | objstream(cstr, buf); |
235 | } |
236 | |
43341922 |
237 | objstream(cstr, "BT\n"); |
43341922 |
238 | |
7c8c4239 |
239 | /* |
240 | * PDF tracks two separate current positions: the position |
241 | * given in the `line matrix' and the position given in the |
242 | * `text matrix'. We must therefore track both as well. |
243 | * They start off at -1 (unset). |
244 | */ |
245 | lx = ly = -1; |
246 | x = y = -1; |
247 | |
248 | frag = page->first_text; |
249 | while (frag) { |
250 | /* |
251 | * For compactness, I'm going to group text fragments |
252 | * into subsequences that use the same font+size. So |
253 | * first find the end of this subsequence. |
254 | */ |
255 | for (frag_end = frag; |
256 | (frag_end && |
257 | frag_end->fe == frag->fe && |
258 | frag_end->fontsize == frag->fontsize); |
259 | frag_end = frag_end->next); |
260 | |
261 | /* |
262 | * Now select the text fragment, and prepare to display |
263 | * the text. |
264 | */ |
43341922 |
265 | objstream(cstr, "/"); |
266 | objstream(cstr, frag->fe->name); |
7c8c4239 |
267 | sprintf(buf, " %d Tf ", frag->fontsize); |
43341922 |
268 | objstream(cstr, buf); |
269 | |
7c8c4239 |
270 | while (frag && frag != frag_end) { |
271 | /* |
272 | * Place the text position for the first piece of |
273 | * text. |
274 | */ |
275 | if (lx < 0) { |
276 | sprintf(buf, "1 0 0 1 %g %g Tm ", |
17c71b41 |
277 | frag->x/FUNITS_PER_PT, frag->y/FUNITS_PER_PT); |
7c8c4239 |
278 | } else { |
279 | sprintf(buf, "%g %g Td ", |
17c71b41 |
280 | (frag->x - lx)/FUNITS_PER_PT, |
281 | (frag->y - ly)/FUNITS_PER_PT); |
7c8c4239 |
282 | } |
43341922 |
283 | objstream(cstr, buf); |
7c8c4239 |
284 | lx = x = frag->x; |
285 | ly = y = frag->y; |
286 | |
287 | /* |
288 | * See if we're going to use Tj (show a single |
289 | * string) or TJ (show an array of strings with |
290 | * x-spacings between them). We determine this by |
291 | * seeing if there's more than one text fragment in |
292 | * sequence with the same y-coordinate. |
293 | */ |
294 | if (frag->next && frag->next != frag_end && |
295 | frag->next->y == y) { |
296 | /* |
297 | * The TJ strategy. |
298 | */ |
299 | objstream(cstr, "["); |
300 | while (frag && frag != frag_end && frag->y == y) { |
301 | if (frag->x != x) { |
302 | sprintf(buf, "%g", |
303 | (x - frag->x) * 1000.0 / |
17c71b41 |
304 | (FUNITS_PER_PT * frag->fontsize)); |
7c8c4239 |
305 | objstream(cstr, buf); |
306 | } |
307 | pdf_string(objstream, cstr, frag->text); |
308 | x = frag->x + frag->width; |
309 | frag = frag->next; |
310 | } |
311 | objstream(cstr, "]TJ\n"); |
312 | } else |
313 | { |
314 | /* |
315 | * The Tj strategy. |
316 | */ |
317 | pdf_string(objstream, cstr, frag->text); |
318 | objstream(cstr, "Tj\n"); |
319 | frag = frag->next; |
320 | } |
43341922 |
321 | } |
43341922 |
322 | } |
323 | objstream(cstr, "ET"); |
324 | |
138d7ffb |
325 | /* |
326 | * Also, we want an annotation dictionary containing the |
327 | * cross-references from this page. |
328 | */ |
329 | if (page->first_xref) { |
330 | xref *xr; |
331 | objtext(opage, "/Annots [\n"); |
332 | |
333 | for (xr = page->first_xref; xr; xr = xr->next) { |
334 | object *annot; |
335 | char buf[256]; |
336 | |
337 | annot = new_object(&olist); |
338 | objref(opage, annot); |
339 | objtext(opage, "\n"); |
340 | |
341 | objtext(annot, "<<\n/Type /Annot\n/Subtype /Link\n/Rect ["); |
342 | sprintf(buf, "%g %g %g %g", |
17c71b41 |
343 | xr->lx / FUNITS_PER_PT, xr->by / FUNITS_PER_PT, |
344 | xr->rx / FUNITS_PER_PT, xr->ty / FUNITS_PER_PT); |
138d7ffb |
345 | objtext(annot, buf); |
346 | objtext(annot, "]\n/Border [0 0 0]\n"); |
347 | |
348 | if (xr->dest.type == PAGE) { |
349 | objtext(annot, "/Dest ["); |
350 | objref(annot, (object *)xr->dest.page->spare); |
351 | objtext(annot, " /XYZ null null null]\n"); |
352 | } else { |
7c8c4239 |
353 | objtext(annot, "/A <<\n/Type /Action\n/S /URI\n/URI "); |
354 | pdf_string(objtext, annot, xr->dest.url); |
355 | objtext(annot, "\n>>\n"); |
138d7ffb |
356 | } |
357 | |
358 | objtext(annot, ">>\n"); |
359 | } |
360 | |
361 | objtext(opage, "]\n"); |
362 | } |
363 | |
43341922 |
364 | objtext(opage, ">>\n"); |
365 | } |
366 | |
367 | /* |
f0e51ce1 |
368 | * Set up the outlines dictionary. |
369 | */ |
a615a778 |
370 | if (outlines) { |
f0e51ce1 |
371 | int topcount; |
372 | char buf[80]; |
373 | |
374 | objtext(outlines, "<<\n/Type /Outlines\n"); |
375 | topcount = make_outline(outlines, doc->outline_elements, |
376 | doc->n_outline_elements, TRUE); |
377 | sprintf(buf, "/Count %d\n>>\n", topcount); |
378 | objtext(outlines, buf); |
379 | } |
380 | |
381 | /* |
43341922 |
382 | * Assemble the final linear form of every object. |
383 | */ |
384 | for (o = olist.head; o; o = o->next) { |
385 | rdstringc rs = {0, 0, NULL}; |
386 | char text[80]; |
387 | |
388 | sprintf(text, "%d 0 obj\n", o->number); |
389 | rdaddsc(&rs, text); |
390 | |
391 | if (!o->main.text && o->stream.text) { |
392 | sprintf(text, "<<\n/Length %d\n>>\n", o->stream.pos); |
393 | rdaddsc(&o->main, text); |
394 | } |
395 | |
396 | assert(o->main.text); |
397 | rdaddsc(&rs, o->main.text); |
398 | sfree(o->main.text); |
399 | |
400 | if (rs.text[rs.pos-1] != '\n') |
401 | rdaddc(&rs, '\n'); |
402 | |
403 | if (o->stream.text) { |
404 | /* |
405 | * FIXME: If we ever start compressing stream data then |
406 | * it will have zero bytes in it, so we'll have to be |
407 | * more careful than this. |
408 | */ |
409 | rdaddsc(&rs, "stream\n"); |
410 | rdaddsc(&rs, o->stream.text); |
411 | rdaddsc(&rs, "\nendstream\n"); |
412 | sfree(o->stream.text); |
413 | } |
414 | |
415 | rdaddsc(&rs, "endobj\n"); |
416 | |
417 | o->final = rs.text; |
418 | o->size = rs.pos; |
419 | } |
420 | |
421 | /* |
422 | * Write out the PDF file. |
423 | */ |
424 | |
425 | fp = fopen(filename, "wb"); |
426 | if (!fp) { |
427 | error(err_cantopenw, filename); |
428 | return; |
429 | } |
430 | |
431 | /* |
09358aa7 |
432 | * Header. I'm going to put the version IDs in the header as |
433 | * well, simply in PDF comments. |
43341922 |
434 | */ |
435 | fileoff = fprintf(fp, "%%PDF-1.3\n"); |
09358aa7 |
436 | for (p = sourceform; p; p = p->next) |
437 | if (p->type == para_VersionID) |
438 | fileoff += pdf_versionid(fp, p->words); |
43341922 |
439 | |
440 | /* |
441 | * Body |
442 | */ |
443 | for (o = olist.head; o; o = o->next) { |
444 | o->fileoff = fileoff; |
445 | fwrite(o->final, 1, o->size, fp); |
446 | fileoff += o->size; |
447 | } |
448 | |
449 | /* |
450 | * Cross-reference table |
451 | */ |
452 | fprintf(fp, "xref\n"); |
453 | assert(olist.head->number == 1); |
454 | fprintf(fp, "0 %d\n", olist.tail->number + 1); |
455 | fprintf(fp, "0000000000 65535 f \n"); |
456 | for (o = olist.head; o; o = o->next) { |
457 | char entry[40]; |
458 | sprintf(entry, "%010d 00000 n \n", o->fileoff); |
459 | assert(strlen(entry) == 20); |
460 | fputs(entry, fp); |
461 | } |
462 | |
463 | /* |
464 | * Trailer |
465 | */ |
466 | fprintf(fp, "trailer\n<<\n/Size %d\n/Root %d 0 R\n>>\n", |
467 | olist.tail->number + 1, cat->number); |
468 | fprintf(fp, "startxref\n%d\n%%%%EOF\n", fileoff); |
469 | |
470 | fclose(fp); |
471 | |
472 | sfree(filename); |
473 | } |
474 | |
475 | static object *new_object(objlist *list) |
476 | { |
f1530049 |
477 | object *obj = snew(object); |
43341922 |
478 | |
479 | obj->list = list; |
480 | |
481 | obj->main.text = NULL; |
482 | obj->main.pos = obj->main.size = 0; |
483 | obj->stream.text = NULL; |
484 | obj->stream.pos = obj->stream.size = 0; |
485 | |
486 | obj->number = list->number++; |
487 | |
488 | obj->next = NULL; |
489 | if (list->tail) |
490 | list->tail->next = obj; |
491 | else |
492 | list->head = obj; |
493 | list->tail = obj; |
494 | |
495 | obj->size = 0; |
496 | obj->final = NULL; |
497 | |
498 | return obj; |
499 | } |
500 | |
501 | static void objtext(object *o, char const *text) |
502 | { |
503 | rdaddsc(&o->main, text); |
504 | } |
505 | |
506 | static void objstream(object *o, char const *text) |
507 | { |
508 | rdaddsc(&o->stream, text); |
509 | } |
510 | |
511 | static void objref(object *o, object *dest) |
512 | { |
513 | char buf[40]; |
514 | sprintf(buf, "%d 0 R", dest->number); |
515 | rdaddsc(&o->main, buf); |
516 | } |
517 | |
518 | static void make_pages_node(object *node, object *parent, page_data *first, |
2ff8419e |
519 | page_data *last, object *resources, |
520 | object *mediabox) |
43341922 |
521 | { |
522 | int count; |
523 | page_data *page; |
524 | char buf[80]; |
525 | |
526 | objtext(node, "<<\n/Type /Pages\n"); |
527 | if (parent) { |
528 | objtext(node, "/Parent "); |
529 | objref(node, parent); |
530 | objtext(node, "\n"); |
531 | } |
532 | |
533 | /* |
534 | * Count the pages in this stretch, to see if there are few |
535 | * enough to reference directly. |
536 | */ |
537 | count = 0; |
538 | for (page = first; page; page = page->next) { |
539 | count++; |
540 | if (page == last) |
541 | break; |
542 | } |
543 | |
544 | sprintf(buf, "/Count %d\n/Kids [\n", count); |
545 | objtext(node, buf); |
546 | |
547 | if (count > TREE_BRANCH) { |
548 | int i; |
549 | page_data *thisfirst, *thislast; |
550 | |
551 | page = first; |
552 | |
553 | for (i = 0; i < TREE_BRANCH; i++) { |
554 | int number = (i+1) * count / TREE_BRANCH - i * count / TREE_BRANCH; |
555 | thisfirst = page; |
556 | while (number--) { |
557 | thislast = page; |
558 | page = page->next; |
559 | } |
560 | |
561 | if (thisfirst == thislast) { |
562 | objref(node, (object *)thisfirst->spare); |
563 | objtext((object *)thisfirst->spare, "/Parent "); |
564 | objref((object *)thisfirst->spare, node); |
565 | objtext((object *)thisfirst->spare, "\n"); |
566 | } else { |
567 | object *newnode = new_object(node->list); |
2ff8419e |
568 | make_pages_node(newnode, node, thisfirst, thislast, |
569 | NULL, NULL); |
43341922 |
570 | objref(node, newnode); |
571 | } |
572 | objtext(node, "\n"); |
573 | } |
574 | |
575 | assert(thislast == last || page == NULL); |
576 | |
577 | } else { |
578 | for (page = first; page; page = page->next) { |
579 | objref(node, (object *)page->spare); |
580 | objtext(node, "\n"); |
581 | objtext((object *)page->spare, "/Parent "); |
582 | objref((object *)page->spare, node); |
583 | objtext((object *)page->spare, "\n"); |
584 | if (page == last) |
585 | break; |
586 | } |
587 | } |
588 | |
589 | objtext(node, "]\n"); |
590 | |
591 | if (resources) { |
592 | objtext(node, "/Resources "); |
593 | objref(node, resources); |
594 | objtext(node, "\n"); |
595 | } |
2ff8419e |
596 | if (mediabox) { |
597 | objtext(node, "/MediaBox "); |
598 | objref(node, mediabox); |
599 | objtext(node, "\n"); |
600 | } |
43341922 |
601 | |
602 | objtext(node, ">>\n"); |
603 | } |
f0e51ce1 |
604 | |
605 | /* |
606 | * In text on the page, PDF uses the PostScript font model, which |
607 | * means that glyphs are identified by PS strings and hence font |
608 | * encoding can be managed independently of the supplied encoding |
609 | * of the font. However, in the document outline, the PDF spec |
ce1b04aa |
610 | * encodes in either PDFDocEncoding (a custom superset of |
611 | * ISO-8859-1) or UTF-16BE. |
f0e51ce1 |
612 | */ |
ce1b04aa |
613 | static char *pdf_outline_convert(wchar_t *s, int *len) { |
614 | char *ret; |
615 | |
616 | ret = utoa_careful_dup(s, CS_PDF); |
617 | |
618 | /* |
619 | * Very silly special case: if the returned string begins with |
620 | * FE FF, then the PDF reader will mistake it for a UTF-16BE |
621 | * string. So in this case we give up on PDFDocEncoding and |
622 | * encode it in UTF-16 straight away. |
623 | */ |
624 | if (ret && ret[0] == '\xFE' && ret[1] == '\xFF') { |
625 | sfree(ret); |
626 | ret = NULL; |
f0e51ce1 |
627 | } |
ce1b04aa |
628 | |
629 | if (!ret) { |
630 | ret = utoa_dup_len(s, CS_UTF16BE, len); |
631 | } else { |
632 | *len = strlen(ret); |
f0e51ce1 |
633 | } |
ce1b04aa |
634 | |
635 | return ret; |
f0e51ce1 |
636 | } |
637 | |
f0e51ce1 |
638 | static int make_outline(object *parent, outline_element *items, int n, |
639 | int open) |
640 | { |
641 | int level, totalcount = 0; |
642 | outline_element *itemp; |
643 | object *curr, *prev = NULL, *first = NULL, *last = NULL; |
f0e51ce1 |
644 | |
645 | assert(n > 0); |
646 | |
647 | level = items->level; |
648 | |
649 | while (n > 0) { |
7c8c4239 |
650 | char *title; |
ce1b04aa |
651 | int titlelen; |
f0e51ce1 |
652 | |
653 | /* |
654 | * Here we expect to be sitting on an item at the given |
655 | * level. So we start by constructing an outline entry for |
656 | * that item. |
657 | */ |
658 | assert(items->level == level); |
659 | |
ce1b04aa |
660 | title = pdf_outline_convert(items->pdata->outline_title, &titlelen); |
f0e51ce1 |
661 | |
662 | totalcount++; |
663 | curr = new_object(parent->list); |
664 | if (!first) first = curr; |
665 | last = curr; |
7c8c4239 |
666 | objtext(curr, "<<\n/Title "); |
ce1b04aa |
667 | pdf_string_len(objtext, curr, title, titlelen); |
7c8c4239 |
668 | objtext(curr, "\n/Parent "); |
f0e51ce1 |
669 | objref(curr, parent); |
670 | objtext(curr, "\n/Dest ["); |
be76d597 |
671 | objref(curr, (object *)items->pdata->first->page->spare); |
f0e51ce1 |
672 | objtext(curr, " /XYZ null null null]\n"); |
673 | if (prev) { |
674 | objtext(curr, "/Prev "); |
675 | objref(curr, prev); |
676 | objtext(curr, "\n"); |
677 | |
678 | objtext(prev, "/Next "); |
679 | objref(prev, curr); |
680 | objtext(prev, "\n>>\n"); |
681 | } |
682 | prev = curr; |
683 | |
684 | items++, n--; |
685 | for (itemp = items; itemp < items+n && itemp->level > level; |
686 | itemp++); |
687 | |
688 | if (itemp > items) { |
689 | char buf[80]; |
690 | int count = make_outline(curr, items, itemp - items, FALSE); |
691 | if (!open) |
692 | count = -count; |
693 | else |
694 | totalcount += count; |
695 | sprintf(buf, "/Count %d\n", count); |
696 | objtext(curr, buf); |
697 | } |
698 | |
699 | n -= itemp - items; |
700 | items = itemp; |
701 | } |
702 | objtext(prev, ">>\n"); |
703 | |
704 | assert(first && last); |
705 | objtext(parent, "/First "); |
706 | objref(parent, first); |
707 | objtext(parent, "\n/Last "); |
708 | objref(parent, last); |
709 | objtext(parent, "\n"); |
710 | |
711 | return totalcount; |
712 | } |
09358aa7 |
713 | |
714 | static int pdf_versionid(FILE *fp, word *words) |
715 | { |
716 | int ret; |
717 | |
718 | ret = fprintf(fp, "%% "); |
719 | |
720 | for (; words; words = words->next) { |
721 | char *text; |
722 | int type; |
723 | |
724 | switch (words->type) { |
725 | case word_HyperLink: |
726 | case word_HyperEnd: |
727 | case word_UpperXref: |
728 | case word_LowerXref: |
729 | case word_XrefEnd: |
730 | case word_IndexRef: |
731 | continue; |
732 | } |
733 | |
734 | type = removeattr(words->type); |
735 | |
736 | switch (type) { |
737 | case word_Normal: |
e4ea58f8 |
738 | text = utoa_dup(words->text, CS_ASCII); |
09358aa7 |
739 | break; |
740 | case word_WhiteSpace: |
741 | text = dupstr(" "); |
742 | break; |
743 | case word_Quote: |
744 | text = dupstr("'"); |
745 | break; |
746 | } |
747 | |
748 | fputs(text, fp); |
749 | ret += strlen(text); |
750 | sfree(text); |
751 | } |
752 | |
753 | ret += fprintf(fp, "\n"); |
754 | |
755 | return ret; |
756 | } |
7c8c4239 |
757 | |
ce1b04aa |
758 | static void pdf_string_len(void (*add)(object *, char const *), |
759 | object *o, char const *str, int len) |
7c8c4239 |
760 | { |
761 | char const *p; |
762 | |
763 | add(o, "("); |
ce1b04aa |
764 | for (p = str; len > 0; p++, len--) { |
765 | char c[10]; |
766 | if (*p < ' ' || *p > '~') { |
767 | sprintf(c, "\\%03o", 0xFF & (int)*p); |
768 | } else { |
769 | int n = 0; |
770 | if (*p == '\\' || *p == '(' || *p == ')') |
771 | c[n++] = '\\'; |
772 | c[n++] = *p; |
773 | c[n] = '\0'; |
774 | } |
7c8c4239 |
775 | add(o, c); |
776 | } |
777 | add(o, ")"); |
778 | } |
ce1b04aa |
779 | |
780 | static void pdf_string(void (*add)(object *, char const *), |
781 | object *o, char const *str) |
782 | { |
783 | pdf_string_len(add, o, str, strlen(str)); |
784 | } |