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 | { |
13 | paragraph *p; |
14 | wchar_t *ufilename, *up; |
15 | int len; |
16 | |
17 | p = mknew(paragraph); |
18 | memset(p, 0, sizeof(*p)); |
19 | p->type = para_Config; |
20 | p->next = NULL; |
21 | p->fpos.filename = "<command line>"; |
22 | p->fpos.line = p->fpos.col = -1; |
23 | |
24 | ufilename = ufroma_dup(filename); |
25 | len = ustrlen(ufilename) + 2 + lenof(L"pdf-filename"); |
26 | p->keyword = mknewa(wchar_t, len); |
27 | up = p->keyword; |
28 | ustrcpy(up, L"pdf-filename"); |
29 | up = uadv(up); |
30 | ustrcpy(up, ufilename); |
31 | up = uadv(up); |
32 | *up = L'\0'; |
33 | assert(up - p->keyword < len); |
34 | sfree(ufilename); |
35 | |
36 | return p; |
37 | } |
38 | |
39 | typedef struct object_Tag object; |
40 | typedef struct objlist_Tag objlist; |
41 | |
42 | struct object_Tag { |
43 | objlist *list; |
44 | object *next; |
45 | int number; |
46 | rdstringc main, stream; |
47 | int size, fileoff; |
48 | char *final; |
49 | }; |
50 | |
51 | struct objlist_Tag { |
52 | int number; |
53 | object *head, *tail; |
54 | }; |
55 | |
56 | static object *new_object(objlist *list); |
57 | static void objtext(object *o, char const *text); |
58 | static void objstream(object *o, char const *text); |
7c8c4239 |
59 | static void pdf_string(void (*add)(object *, char const *), |
60 | object *, char const *); |
43341922 |
61 | static void objref(object *o, object *dest); |
62 | |
63 | static void make_pages_node(object *node, object *parent, page_data *first, |
64 | page_data *last, object *resources); |
f0e51ce1 |
65 | static int make_outline(object *parent, outline_element *start, int n, |
66 | int open); |
09358aa7 |
67 | static int pdf_versionid(FILE *fp, word *words); |
43341922 |
68 | |
69 | void pdf_backend(paragraph *sourceform, keywordlist *keywords, |
70 | indexdata *idx, void *vdoc) { |
71 | document *doc = (document *)vdoc; |
72 | int font_index; |
73 | font_encoding *fe; |
74 | page_data *page; |
75 | int pageno; |
76 | FILE *fp; |
77 | char *filename; |
78 | paragraph *p; |
79 | objlist olist; |
80 | object *o, *cat, *outlines, *pages, *resources; |
81 | int fileoff; |
82 | |
83 | IGNORE(keywords); |
84 | IGNORE(idx); |
85 | |
86 | filename = dupstr("output.pdf"); |
87 | for (p = sourceform; p; p = p->next) { |
43341922 |
88 | if (p->type == para_Config && p->parent) { |
89 | if (!ustricmp(p->keyword, L"pdf-filename")) { |
90 | sfree(filename); |
91 | filename = utoa_dup(uadv(p->keyword)); |
92 | } |
93 | } |
94 | } |
95 | |
96 | olist.head = olist.tail = NULL; |
97 | olist.number = 1; |
98 | |
99 | cat = new_object(&olist); |
100 | outlines = new_object(&olist); |
101 | pages = new_object(&olist); |
102 | resources = new_object(&olist); |
103 | |
104 | /* |
43341922 |
105 | * The catalogue just contains references to the outlines and |
106 | * pages objects. |
107 | */ |
108 | objtext(cat, "<<\n/Type /Catalog\n/Outlines "); |
109 | objref(cat, outlines); |
110 | objtext(cat, "\n/Pages "); |
111 | objref(cat, pages); |
f0e51ce1 |
112 | objtext(cat, "\n/PageMode /UseOutlines\n>>\n"); |
43341922 |
113 | |
114 | /* |
115 | * Set up the resources dictionary, which mostly means |
116 | * providing all the font objects and names to call them by. |
117 | */ |
118 | font_index = 0; |
119 | objtext(resources, "<<\n/Font <<\n"); |
120 | for (fe = doc->fonts->head; fe; fe = fe->next) { |
121 | char fname[40]; |
122 | int i; |
123 | object *font; |
124 | |
125 | sprintf(fname, "f%d", font_index++); |
126 | fe->name = dupstr(fname); |
127 | |
128 | font = new_object(&olist); |
129 | |
130 | objtext(resources, "/"); |
131 | objtext(resources, fe->name); |
132 | objtext(resources, " "); |
133 | objref(resources, font); |
134 | objtext(resources, "\n"); |
135 | |
136 | objtext(font, "<<\n/Type /Font\n/Subtype /Type1\n/Name /"); |
137 | objtext(font, fe->name); |
138 | objtext(font, "\n/BaseFont /"); |
139 | objtext(font, fe->font->name); |
140 | objtext(font, "\n/Encoding <<\n/Type /Encoding\n/Differences ["); |
141 | |
142 | for (i = 0; i < 256; i++) { |
143 | char buf[20]; |
144 | if (!fe->vector[i]) |
145 | continue; |
146 | sprintf(buf, "\n%d /", i); |
147 | objtext(font, buf); |
148 | objtext(font, fe->vector[i] ? fe->vector[i] : ".notdef"); |
149 | } |
150 | |
151 | objtext(font, "\n]\n>>\n"); |
152 | |
153 | { |
154 | object *widths = new_object(&olist); |
155 | objtext(font, "/FirstChar 0\n/LastChar 255\n/Widths "); |
156 | objref(font, widths); |
157 | objtext(font, "\n"); |
158 | objtext(widths, "[\n"); |
159 | for (i = 0; i < 256; i++) { |
160 | char buf[80]; |
161 | double width; |
162 | if (fe->indices[i] < 0) |
163 | width = 0.0; |
164 | else |
165 | width = fe->font->widths[fe->indices[i]]; |
166 | sprintf(buf, "%g\n", 1000.0 * width / 4096.0); |
167 | objtext(widths, buf); |
168 | } |
169 | objtext(widths, "]\n"); |
170 | } |
171 | |
172 | objtext(font, ">>\n"); |
173 | } |
174 | objtext(resources, ">>\n>>\n"); |
175 | |
176 | /* |
177 | * Define the page objects for each page, and get each one |
178 | * ready to have a `Parent' specification added to it. |
179 | */ |
180 | for (page = doc->pages; page; page = page->next) { |
181 | object *opage; |
182 | |
183 | opage = new_object(&olist); |
184 | page->spare = opage; |
185 | objtext(opage, "<<\n/Type /Page\n"); |
186 | } |
187 | |
188 | /* |
189 | * Recursively build the page tree. |
190 | */ |
191 | make_pages_node(pages, NULL, doc->pages, NULL, resources); |
192 | |
193 | /* |
194 | * Create and render the individual pages. |
195 | */ |
196 | pageno = 0; |
197 | for (page = doc->pages; page; page = page->next) { |
198 | object *opage, *cstr; |
23765aeb |
199 | rect *r; |
7c8c4239 |
200 | text_fragment *frag, *frag_end; |
43341922 |
201 | char buf[256]; |
7c8c4239 |
202 | int x, y, lx, ly; |
43341922 |
203 | |
204 | opage = (object *)page->spare; |
205 | /* |
206 | * At this point the page dictionary is already |
207 | * half-written, with /Type and /Parent already present. We |
208 | * continue from there. |
209 | */ |
210 | |
211 | /* |
212 | * The PDF spec says /Resources is required, but also says |
213 | * that it's inheritable and may be omitted if it's present |
214 | * in a Pages node. In our case it is: it's present in the |
215 | * topmost /Pages node because we carefully put it there. |
216 | * So we don't need a /Resources entry here. |
217 | */ |
218 | sprintf(buf, "/MediaBox [0 0 %g %g]\n", |
219 | doc->paper_width / 4096.0, doc->paper_height / 4096.0); |
220 | objtext(opage, buf); |
221 | |
222 | /* |
223 | * Now we're ready to define a content stream containing |
224 | * the actual text on the page. |
225 | */ |
226 | cstr = new_object(&olist); |
227 | objtext(opage, "/Contents "); |
228 | objref(opage, cstr); |
229 | objtext(opage, "\n"); |
230 | |
23765aeb |
231 | /* |
232 | * Render any rectangles on the page. |
233 | */ |
234 | for (r = page->first_rect; r; r = r->next) { |
235 | char buf[512]; |
236 | sprintf(buf, "%g %g %g %g re f\n", r->x / 4096.0, |
237 | r->y / 4096.0, r->w / 4096.0, r->h / 4096.0); |
238 | objstream(cstr, buf); |
239 | } |
240 | |
43341922 |
241 | objstream(cstr, "BT\n"); |
43341922 |
242 | |
7c8c4239 |
243 | /* |
244 | * PDF tracks two separate current positions: the position |
245 | * given in the `line matrix' and the position given in the |
246 | * `text matrix'. We must therefore track both as well. |
247 | * They start off at -1 (unset). |
248 | */ |
249 | lx = ly = -1; |
250 | x = y = -1; |
251 | |
252 | frag = page->first_text; |
253 | while (frag) { |
254 | /* |
255 | * For compactness, I'm going to group text fragments |
256 | * into subsequences that use the same font+size. So |
257 | * first find the end of this subsequence. |
258 | */ |
259 | for (frag_end = frag; |
260 | (frag_end && |
261 | frag_end->fe == frag->fe && |
262 | frag_end->fontsize == frag->fontsize); |
263 | frag_end = frag_end->next); |
264 | |
265 | /* |
266 | * Now select the text fragment, and prepare to display |
267 | * the text. |
268 | */ |
43341922 |
269 | objstream(cstr, "/"); |
270 | objstream(cstr, frag->fe->name); |
7c8c4239 |
271 | sprintf(buf, " %d Tf ", frag->fontsize); |
43341922 |
272 | objstream(cstr, buf); |
273 | |
7c8c4239 |
274 | while (frag && frag != frag_end) { |
275 | /* |
276 | * Place the text position for the first piece of |
277 | * text. |
278 | */ |
279 | if (lx < 0) { |
280 | sprintf(buf, "1 0 0 1 %g %g Tm ", |
281 | frag->x/4096.0, frag->y/4096.0); |
282 | } else { |
283 | sprintf(buf, "%g %g Td ", |
284 | (frag->x - lx)/4096.0, (frag->y - ly)/4096.0); |
285 | } |
43341922 |
286 | objstream(cstr, buf); |
7c8c4239 |
287 | lx = x = frag->x; |
288 | ly = y = frag->y; |
289 | |
290 | /* |
291 | * See if we're going to use Tj (show a single |
292 | * string) or TJ (show an array of strings with |
293 | * x-spacings between them). We determine this by |
294 | * seeing if there's more than one text fragment in |
295 | * sequence with the same y-coordinate. |
296 | */ |
297 | if (frag->next && frag->next != frag_end && |
298 | frag->next->y == y) { |
299 | /* |
300 | * The TJ strategy. |
301 | */ |
302 | objstream(cstr, "["); |
303 | while (frag && frag != frag_end && frag->y == y) { |
304 | if (frag->x != x) { |
305 | sprintf(buf, "%g", |
306 | (x - frag->x) * 1000.0 / |
307 | (4096.0 * frag->fontsize)); |
308 | objstream(cstr, buf); |
309 | } |
310 | pdf_string(objstream, cstr, frag->text); |
311 | x = frag->x + frag->width; |
312 | frag = frag->next; |
313 | } |
314 | objstream(cstr, "]TJ\n"); |
315 | } else |
316 | { |
317 | /* |
318 | * The Tj strategy. |
319 | */ |
320 | pdf_string(objstream, cstr, frag->text); |
321 | objstream(cstr, "Tj\n"); |
322 | frag = frag->next; |
323 | } |
43341922 |
324 | } |
43341922 |
325 | } |
326 | objstream(cstr, "ET"); |
327 | |
138d7ffb |
328 | /* |
329 | * Also, we want an annotation dictionary containing the |
330 | * cross-references from this page. |
331 | */ |
332 | if (page->first_xref) { |
333 | xref *xr; |
334 | objtext(opage, "/Annots [\n"); |
335 | |
336 | for (xr = page->first_xref; xr; xr = xr->next) { |
337 | object *annot; |
338 | char buf[256]; |
339 | |
340 | annot = new_object(&olist); |
341 | objref(opage, annot); |
342 | objtext(opage, "\n"); |
343 | |
344 | objtext(annot, "<<\n/Type /Annot\n/Subtype /Link\n/Rect ["); |
345 | sprintf(buf, "%g %g %g %g", |
346 | xr->lx / 4096.0, xr->by / 4096.0, |
347 | xr->rx / 4096.0, xr->ty / 4096.0); |
348 | objtext(annot, buf); |
349 | objtext(annot, "]\n/Border [0 0 0]\n"); |
350 | |
351 | if (xr->dest.type == PAGE) { |
352 | objtext(annot, "/Dest ["); |
353 | objref(annot, (object *)xr->dest.page->spare); |
354 | objtext(annot, " /XYZ null null null]\n"); |
355 | } else { |
7c8c4239 |
356 | objtext(annot, "/A <<\n/Type /Action\n/S /URI\n/URI "); |
357 | pdf_string(objtext, annot, xr->dest.url); |
358 | objtext(annot, "\n>>\n"); |
138d7ffb |
359 | } |
360 | |
361 | objtext(annot, ">>\n"); |
362 | } |
363 | |
364 | objtext(opage, "]\n"); |
365 | } |
366 | |
43341922 |
367 | objtext(opage, ">>\n"); |
368 | } |
369 | |
370 | /* |
f0e51ce1 |
371 | * Set up the outlines dictionary. |
372 | */ |
373 | { |
374 | int topcount; |
375 | char buf[80]; |
376 | |
377 | objtext(outlines, "<<\n/Type /Outlines\n"); |
378 | topcount = make_outline(outlines, doc->outline_elements, |
379 | doc->n_outline_elements, TRUE); |
380 | sprintf(buf, "/Count %d\n>>\n", topcount); |
381 | objtext(outlines, buf); |
382 | } |
383 | |
384 | /* |
43341922 |
385 | * Assemble the final linear form of every object. |
386 | */ |
387 | for (o = olist.head; o; o = o->next) { |
388 | rdstringc rs = {0, 0, NULL}; |
389 | char text[80]; |
390 | |
391 | sprintf(text, "%d 0 obj\n", o->number); |
392 | rdaddsc(&rs, text); |
393 | |
394 | if (!o->main.text && o->stream.text) { |
395 | sprintf(text, "<<\n/Length %d\n>>\n", o->stream.pos); |
396 | rdaddsc(&o->main, text); |
397 | } |
398 | |
399 | assert(o->main.text); |
400 | rdaddsc(&rs, o->main.text); |
401 | sfree(o->main.text); |
402 | |
403 | if (rs.text[rs.pos-1] != '\n') |
404 | rdaddc(&rs, '\n'); |
405 | |
406 | if (o->stream.text) { |
407 | /* |
408 | * FIXME: If we ever start compressing stream data then |
409 | * it will have zero bytes in it, so we'll have to be |
410 | * more careful than this. |
411 | */ |
412 | rdaddsc(&rs, "stream\n"); |
413 | rdaddsc(&rs, o->stream.text); |
414 | rdaddsc(&rs, "\nendstream\n"); |
415 | sfree(o->stream.text); |
416 | } |
417 | |
418 | rdaddsc(&rs, "endobj\n"); |
419 | |
420 | o->final = rs.text; |
421 | o->size = rs.pos; |
422 | } |
423 | |
424 | /* |
425 | * Write out the PDF file. |
426 | */ |
427 | |
428 | fp = fopen(filename, "wb"); |
429 | if (!fp) { |
430 | error(err_cantopenw, filename); |
431 | return; |
432 | } |
433 | |
434 | /* |
09358aa7 |
435 | * Header. I'm going to put the version IDs in the header as |
436 | * well, simply in PDF comments. |
43341922 |
437 | */ |
438 | fileoff = fprintf(fp, "%%PDF-1.3\n"); |
09358aa7 |
439 | for (p = sourceform; p; p = p->next) |
440 | if (p->type == para_VersionID) |
441 | fileoff += pdf_versionid(fp, p->words); |
43341922 |
442 | |
443 | /* |
444 | * Body |
445 | */ |
446 | for (o = olist.head; o; o = o->next) { |
447 | o->fileoff = fileoff; |
448 | fwrite(o->final, 1, o->size, fp); |
449 | fileoff += o->size; |
450 | } |
451 | |
452 | /* |
453 | * Cross-reference table |
454 | */ |
455 | fprintf(fp, "xref\n"); |
456 | assert(olist.head->number == 1); |
457 | fprintf(fp, "0 %d\n", olist.tail->number + 1); |
458 | fprintf(fp, "0000000000 65535 f \n"); |
459 | for (o = olist.head; o; o = o->next) { |
460 | char entry[40]; |
461 | sprintf(entry, "%010d 00000 n \n", o->fileoff); |
462 | assert(strlen(entry) == 20); |
463 | fputs(entry, fp); |
464 | } |
465 | |
466 | /* |
467 | * Trailer |
468 | */ |
469 | fprintf(fp, "trailer\n<<\n/Size %d\n/Root %d 0 R\n>>\n", |
470 | olist.tail->number + 1, cat->number); |
471 | fprintf(fp, "startxref\n%d\n%%%%EOF\n", fileoff); |
472 | |
473 | fclose(fp); |
474 | |
475 | sfree(filename); |
476 | } |
477 | |
478 | static object *new_object(objlist *list) |
479 | { |
480 | object *obj = mknew(object); |
481 | |
482 | obj->list = list; |
483 | |
484 | obj->main.text = NULL; |
485 | obj->main.pos = obj->main.size = 0; |
486 | obj->stream.text = NULL; |
487 | obj->stream.pos = obj->stream.size = 0; |
488 | |
489 | obj->number = list->number++; |
490 | |
491 | obj->next = NULL; |
492 | if (list->tail) |
493 | list->tail->next = obj; |
494 | else |
495 | list->head = obj; |
496 | list->tail = obj; |
497 | |
498 | obj->size = 0; |
499 | obj->final = NULL; |
500 | |
501 | return obj; |
502 | } |
503 | |
504 | static void objtext(object *o, char const *text) |
505 | { |
506 | rdaddsc(&o->main, text); |
507 | } |
508 | |
509 | static void objstream(object *o, char const *text) |
510 | { |
511 | rdaddsc(&o->stream, text); |
512 | } |
513 | |
514 | static void objref(object *o, object *dest) |
515 | { |
516 | char buf[40]; |
517 | sprintf(buf, "%d 0 R", dest->number); |
518 | rdaddsc(&o->main, buf); |
519 | } |
520 | |
521 | static void make_pages_node(object *node, object *parent, page_data *first, |
522 | page_data *last, object *resources) |
523 | { |
524 | int count; |
525 | page_data *page; |
526 | char buf[80]; |
527 | |
528 | objtext(node, "<<\n/Type /Pages\n"); |
529 | if (parent) { |
530 | objtext(node, "/Parent "); |
531 | objref(node, parent); |
532 | objtext(node, "\n"); |
533 | } |
534 | |
535 | /* |
536 | * Count the pages in this stretch, to see if there are few |
537 | * enough to reference directly. |
538 | */ |
539 | count = 0; |
540 | for (page = first; page; page = page->next) { |
541 | count++; |
542 | if (page == last) |
543 | break; |
544 | } |
545 | |
546 | sprintf(buf, "/Count %d\n/Kids [\n", count); |
547 | objtext(node, buf); |
548 | |
549 | if (count > TREE_BRANCH) { |
550 | int i; |
551 | page_data *thisfirst, *thislast; |
552 | |
553 | page = first; |
554 | |
555 | for (i = 0; i < TREE_BRANCH; i++) { |
556 | int number = (i+1) * count / TREE_BRANCH - i * count / TREE_BRANCH; |
557 | thisfirst = page; |
558 | while (number--) { |
559 | thislast = page; |
560 | page = page->next; |
561 | } |
562 | |
563 | if (thisfirst == thislast) { |
564 | objref(node, (object *)thisfirst->spare); |
565 | objtext((object *)thisfirst->spare, "/Parent "); |
566 | objref((object *)thisfirst->spare, node); |
567 | objtext((object *)thisfirst->spare, "\n"); |
568 | } else { |
569 | object *newnode = new_object(node->list); |
570 | make_pages_node(newnode, node, thisfirst, thislast, NULL); |
571 | objref(node, newnode); |
572 | } |
573 | objtext(node, "\n"); |
574 | } |
575 | |
576 | assert(thislast == last || page == NULL); |
577 | |
578 | } else { |
579 | for (page = first; page; page = page->next) { |
580 | objref(node, (object *)page->spare); |
581 | objtext(node, "\n"); |
582 | objtext((object *)page->spare, "/Parent "); |
583 | objref((object *)page->spare, node); |
584 | objtext((object *)page->spare, "\n"); |
585 | if (page == last) |
586 | break; |
587 | } |
588 | } |
589 | |
590 | objtext(node, "]\n"); |
591 | |
592 | if (resources) { |
593 | objtext(node, "/Resources "); |
594 | objref(node, resources); |
595 | objtext(node, "\n"); |
596 | } |
597 | |
598 | objtext(node, ">>\n"); |
599 | } |
f0e51ce1 |
600 | |
601 | /* |
602 | * In text on the page, PDF uses the PostScript font model, which |
603 | * means that glyphs are identified by PS strings and hence font |
604 | * encoding can be managed independently of the supplied encoding |
605 | * of the font. However, in the document outline, the PDF spec |
606 | * simply asks for ordinary text strings without mentioning what |
607 | * character set they are supposed to be interpreted in. |
608 | * |
609 | * Therefore, for the moment, I'm going to assume they're US-ASCII |
610 | * only. If anyone knows better, they should let me know :-/ |
611 | */ |
612 | static int pdf_convert(wchar_t *s, char **result) { |
613 | int doing = (result != 0); |
614 | int ok = TRUE; |
615 | char *p = NULL; |
616 | int plen = 0, psize = 0; |
617 | |
618 | for (; *s; s++) { |
619 | wchar_t c = *s; |
620 | char outc; |
621 | |
622 | if (c >= 32 && c <= 126) { |
623 | /* Char is OK. */ |
624 | outc = (char)c; |
625 | } else { |
626 | /* Char is not OK. */ |
627 | ok = FALSE; |
628 | outc = 0xBF; /* approximate the good old DEC `uh?' */ |
629 | } |
630 | if (doing) { |
631 | if (plen >= psize) { |
632 | psize = plen + 256; |
633 | p = resize(p, psize); |
634 | } |
635 | p[plen++] = outc; |
636 | } |
637 | } |
638 | if (doing) { |
639 | p = resize(p, plen+1); |
640 | p[plen] = '\0'; |
641 | *result = p; |
642 | } |
643 | return ok; |
644 | } |
645 | |
f0e51ce1 |
646 | static int make_outline(object *parent, outline_element *items, int n, |
647 | int open) |
648 | { |
649 | int level, totalcount = 0; |
650 | outline_element *itemp; |
651 | object *curr, *prev = NULL, *first = NULL, *last = NULL; |
f0e51ce1 |
652 | |
653 | assert(n > 0); |
654 | |
655 | level = items->level; |
656 | |
657 | while (n > 0) { |
7c8c4239 |
658 | char *title; |
f0e51ce1 |
659 | |
660 | /* |
661 | * Here we expect to be sitting on an item at the given |
662 | * level. So we start by constructing an outline entry for |
663 | * that item. |
664 | */ |
665 | assert(items->level == level); |
666 | |
be76d597 |
667 | pdf_convert(items->pdata->outline_title, &title); |
f0e51ce1 |
668 | |
669 | totalcount++; |
670 | curr = new_object(parent->list); |
671 | if (!first) first = curr; |
672 | last = curr; |
7c8c4239 |
673 | objtext(curr, "<<\n/Title "); |
674 | pdf_string(objtext, curr, title); |
675 | objtext(curr, "\n/Parent "); |
f0e51ce1 |
676 | objref(curr, parent); |
677 | objtext(curr, "\n/Dest ["); |
be76d597 |
678 | objref(curr, (object *)items->pdata->first->page->spare); |
f0e51ce1 |
679 | objtext(curr, " /XYZ null null null]\n"); |
680 | if (prev) { |
681 | objtext(curr, "/Prev "); |
682 | objref(curr, prev); |
683 | objtext(curr, "\n"); |
684 | |
685 | objtext(prev, "/Next "); |
686 | objref(prev, curr); |
687 | objtext(prev, "\n>>\n"); |
688 | } |
689 | prev = curr; |
690 | |
691 | items++, n--; |
692 | for (itemp = items; itemp < items+n && itemp->level > level; |
693 | itemp++); |
694 | |
695 | if (itemp > items) { |
696 | char buf[80]; |
697 | int count = make_outline(curr, items, itemp - items, FALSE); |
698 | if (!open) |
699 | count = -count; |
700 | else |
701 | totalcount += count; |
702 | sprintf(buf, "/Count %d\n", count); |
703 | objtext(curr, buf); |
704 | } |
705 | |
706 | n -= itemp - items; |
707 | items = itemp; |
708 | } |
709 | objtext(prev, ">>\n"); |
710 | |
711 | assert(first && last); |
712 | objtext(parent, "/First "); |
713 | objref(parent, first); |
714 | objtext(parent, "\n/Last "); |
715 | objref(parent, last); |
716 | objtext(parent, "\n"); |
717 | |
718 | return totalcount; |
719 | } |
09358aa7 |
720 | |
721 | static int pdf_versionid(FILE *fp, word *words) |
722 | { |
723 | int ret; |
724 | |
725 | ret = fprintf(fp, "%% "); |
726 | |
727 | for (; words; words = words->next) { |
728 | char *text; |
729 | int type; |
730 | |
731 | switch (words->type) { |
732 | case word_HyperLink: |
733 | case word_HyperEnd: |
734 | case word_UpperXref: |
735 | case word_LowerXref: |
736 | case word_XrefEnd: |
737 | case word_IndexRef: |
738 | continue; |
739 | } |
740 | |
741 | type = removeattr(words->type); |
742 | |
743 | switch (type) { |
744 | case word_Normal: |
745 | text = utoa_dup(words->text); |
746 | break; |
747 | case word_WhiteSpace: |
748 | text = dupstr(" "); |
749 | break; |
750 | case word_Quote: |
751 | text = dupstr("'"); |
752 | break; |
753 | } |
754 | |
755 | fputs(text, fp); |
756 | ret += strlen(text); |
757 | sfree(text); |
758 | } |
759 | |
760 | ret += fprintf(fp, "\n"); |
761 | |
762 | return ret; |
763 | } |
7c8c4239 |
764 | |
765 | static void pdf_string(void (*add)(object *, char const *), |
766 | object *o, char const *str) |
767 | { |
768 | char const *p; |
769 | |
770 | add(o, "("); |
771 | for (p = str; *p; p++) { |
772 | char c[2]; |
773 | if (*p == '\\' || *p == '(' || *p == ')') |
774 | add(o, "\\"); |
775 | c[0] = *p; |
776 | c[1] = '\0'; |
777 | add(o, c); |
778 | } |
779 | add(o, ")"); |
780 | } |