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, |
43 | page_data *last, object *resources); |
f0e51ce1 |
44 | static int make_outline(object *parent, outline_element *start, int n, |
45 | int open); |
09358aa7 |
46 | static int pdf_versionid(FILE *fp, word *words); |
43341922 |
47 | |
48 | void pdf_backend(paragraph *sourceform, keywordlist *keywords, |
49 | indexdata *idx, void *vdoc) { |
50 | document *doc = (document *)vdoc; |
51 | int font_index; |
52 | font_encoding *fe; |
53 | page_data *page; |
54 | int pageno; |
55 | FILE *fp; |
56 | char *filename; |
57 | paragraph *p; |
58 | objlist olist; |
59 | object *o, *cat, *outlines, *pages, *resources; |
60 | int fileoff; |
61 | |
62 | IGNORE(keywords); |
63 | IGNORE(idx); |
64 | |
65 | filename = dupstr("output.pdf"); |
66 | for (p = sourceform; p; p = p->next) { |
43341922 |
67 | if (p->type == para_Config && p->parent) { |
68 | if (!ustricmp(p->keyword, L"pdf-filename")) { |
69 | sfree(filename); |
e4ea58f8 |
70 | filename = dupstr(adv(p->origkeyword)); |
43341922 |
71 | } |
72 | } |
73 | } |
74 | |
75 | olist.head = olist.tail = NULL; |
76 | olist.number = 1; |
77 | |
78 | cat = new_object(&olist); |
a615a778 |
79 | if (doc->n_outline_elements > 0) |
80 | outlines = new_object(&olist); |
81 | else |
82 | outlines = NULL; |
43341922 |
83 | pages = new_object(&olist); |
84 | resources = new_object(&olist); |
85 | |
86 | /* |
43341922 |
87 | * The catalogue just contains references to the outlines and |
88 | * pages objects. |
89 | */ |
a615a778 |
90 | objtext(cat, "<<\n/Type /Catalog"); |
91 | if (outlines) { |
92 | objtext(cat, "\n/Outlines "); |
93 | objref(cat, outlines); |
94 | } |
43341922 |
95 | objtext(cat, "\n/Pages "); |
96 | objref(cat, pages); |
a615a778 |
97 | if (outlines) |
98 | objtext(cat, "\n/PageMode /UseOutlines"); |
99 | objtext(cat, "\n>>\n"); |
43341922 |
100 | |
101 | /* |
102 | * Set up the resources dictionary, which mostly means |
103 | * providing all the font objects and names to call them by. |
104 | */ |
105 | font_index = 0; |
106 | objtext(resources, "<<\n/Font <<\n"); |
107 | for (fe = doc->fonts->head; fe; fe = fe->next) { |
108 | char fname[40]; |
109 | int i; |
110 | object *font; |
111 | |
112 | sprintf(fname, "f%d", font_index++); |
113 | fe->name = dupstr(fname); |
114 | |
115 | font = new_object(&olist); |
116 | |
117 | objtext(resources, "/"); |
118 | objtext(resources, fe->name); |
119 | objtext(resources, " "); |
120 | objref(resources, font); |
121 | objtext(resources, "\n"); |
122 | |
123 | objtext(font, "<<\n/Type /Font\n/Subtype /Type1\n/Name /"); |
124 | objtext(font, fe->name); |
125 | objtext(font, "\n/BaseFont /"); |
126 | objtext(font, fe->font->name); |
127 | objtext(font, "\n/Encoding <<\n/Type /Encoding\n/Differences ["); |
128 | |
129 | for (i = 0; i < 256; i++) { |
130 | char buf[20]; |
131 | if (!fe->vector[i]) |
132 | continue; |
133 | sprintf(buf, "\n%d /", i); |
134 | objtext(font, buf); |
135 | objtext(font, fe->vector[i] ? fe->vector[i] : ".notdef"); |
136 | } |
137 | |
138 | objtext(font, "\n]\n>>\n"); |
139 | |
140 | { |
141 | object *widths = new_object(&olist); |
142 | objtext(font, "/FirstChar 0\n/LastChar 255\n/Widths "); |
143 | objref(font, widths); |
144 | objtext(font, "\n"); |
145 | objtext(widths, "[\n"); |
146 | for (i = 0; i < 256; i++) { |
147 | char buf[80]; |
148 | double width; |
149 | if (fe->indices[i] < 0) |
150 | width = 0.0; |
151 | else |
152 | width = fe->font->widths[fe->indices[i]]; |
153 | sprintf(buf, "%g\n", 1000.0 * width / 4096.0); |
154 | objtext(widths, buf); |
155 | } |
156 | objtext(widths, "]\n"); |
157 | } |
158 | |
159 | objtext(font, ">>\n"); |
160 | } |
161 | objtext(resources, ">>\n>>\n"); |
162 | |
163 | /* |
164 | * Define the page objects for each page, and get each one |
165 | * ready to have a `Parent' specification added to it. |
166 | */ |
167 | for (page = doc->pages; page; page = page->next) { |
168 | object *opage; |
169 | |
170 | opage = new_object(&olist); |
171 | page->spare = opage; |
172 | objtext(opage, "<<\n/Type /Page\n"); |
173 | } |
174 | |
175 | /* |
176 | * Recursively build the page tree. |
177 | */ |
178 | make_pages_node(pages, NULL, doc->pages, NULL, resources); |
179 | |
180 | /* |
181 | * Create and render the individual pages. |
182 | */ |
183 | pageno = 0; |
184 | for (page = doc->pages; page; page = page->next) { |
185 | object *opage, *cstr; |
23765aeb |
186 | rect *r; |
7c8c4239 |
187 | text_fragment *frag, *frag_end; |
43341922 |
188 | char buf[256]; |
7c8c4239 |
189 | int x, y, lx, ly; |
43341922 |
190 | |
191 | opage = (object *)page->spare; |
192 | /* |
193 | * At this point the page dictionary is already |
194 | * half-written, with /Type and /Parent already present. We |
195 | * continue from there. |
196 | */ |
197 | |
198 | /* |
199 | * The PDF spec says /Resources is required, but also says |
200 | * that it's inheritable and may be omitted if it's present |
201 | * in a Pages node. In our case it is: it's present in the |
202 | * topmost /Pages node because we carefully put it there. |
203 | * So we don't need a /Resources entry here. |
204 | */ |
205 | sprintf(buf, "/MediaBox [0 0 %g %g]\n", |
206 | doc->paper_width / 4096.0, doc->paper_height / 4096.0); |
207 | objtext(opage, buf); |
208 | |
209 | /* |
210 | * Now we're ready to define a content stream containing |
211 | * the actual text on the page. |
212 | */ |
213 | cstr = new_object(&olist); |
214 | objtext(opage, "/Contents "); |
215 | objref(opage, cstr); |
216 | objtext(opage, "\n"); |
217 | |
23765aeb |
218 | /* |
219 | * Render any rectangles on the page. |
220 | */ |
221 | for (r = page->first_rect; r; r = r->next) { |
222 | char buf[512]; |
223 | sprintf(buf, "%g %g %g %g re f\n", r->x / 4096.0, |
224 | r->y / 4096.0, r->w / 4096.0, r->h / 4096.0); |
225 | objstream(cstr, buf); |
226 | } |
227 | |
43341922 |
228 | objstream(cstr, "BT\n"); |
43341922 |
229 | |
7c8c4239 |
230 | /* |
231 | * PDF tracks two separate current positions: the position |
232 | * given in the `line matrix' and the position given in the |
233 | * `text matrix'. We must therefore track both as well. |
234 | * They start off at -1 (unset). |
235 | */ |
236 | lx = ly = -1; |
237 | x = y = -1; |
238 | |
239 | frag = page->first_text; |
240 | while (frag) { |
241 | /* |
242 | * For compactness, I'm going to group text fragments |
243 | * into subsequences that use the same font+size. So |
244 | * first find the end of this subsequence. |
245 | */ |
246 | for (frag_end = frag; |
247 | (frag_end && |
248 | frag_end->fe == frag->fe && |
249 | frag_end->fontsize == frag->fontsize); |
250 | frag_end = frag_end->next); |
251 | |
252 | /* |
253 | * Now select the text fragment, and prepare to display |
254 | * the text. |
255 | */ |
43341922 |
256 | objstream(cstr, "/"); |
257 | objstream(cstr, frag->fe->name); |
7c8c4239 |
258 | sprintf(buf, " %d Tf ", frag->fontsize); |
43341922 |
259 | objstream(cstr, buf); |
260 | |
7c8c4239 |
261 | while (frag && frag != frag_end) { |
262 | /* |
263 | * Place the text position for the first piece of |
264 | * text. |
265 | */ |
266 | if (lx < 0) { |
267 | sprintf(buf, "1 0 0 1 %g %g Tm ", |
268 | frag->x/4096.0, frag->y/4096.0); |
269 | } else { |
270 | sprintf(buf, "%g %g Td ", |
271 | (frag->x - lx)/4096.0, (frag->y - ly)/4096.0); |
272 | } |
43341922 |
273 | objstream(cstr, buf); |
7c8c4239 |
274 | lx = x = frag->x; |
275 | ly = y = frag->y; |
276 | |
277 | /* |
278 | * See if we're going to use Tj (show a single |
279 | * string) or TJ (show an array of strings with |
280 | * x-spacings between them). We determine this by |
281 | * seeing if there's more than one text fragment in |
282 | * sequence with the same y-coordinate. |
283 | */ |
284 | if (frag->next && frag->next != frag_end && |
285 | frag->next->y == y) { |
286 | /* |
287 | * The TJ strategy. |
288 | */ |
289 | objstream(cstr, "["); |
290 | while (frag && frag != frag_end && frag->y == y) { |
291 | if (frag->x != x) { |
292 | sprintf(buf, "%g", |
293 | (x - frag->x) * 1000.0 / |
294 | (4096.0 * frag->fontsize)); |
295 | objstream(cstr, buf); |
296 | } |
297 | pdf_string(objstream, cstr, frag->text); |
298 | x = frag->x + frag->width; |
299 | frag = frag->next; |
300 | } |
301 | objstream(cstr, "]TJ\n"); |
302 | } else |
303 | { |
304 | /* |
305 | * The Tj strategy. |
306 | */ |
307 | pdf_string(objstream, cstr, frag->text); |
308 | objstream(cstr, "Tj\n"); |
309 | frag = frag->next; |
310 | } |
43341922 |
311 | } |
43341922 |
312 | } |
313 | objstream(cstr, "ET"); |
314 | |
138d7ffb |
315 | /* |
316 | * Also, we want an annotation dictionary containing the |
317 | * cross-references from this page. |
318 | */ |
319 | if (page->first_xref) { |
320 | xref *xr; |
321 | objtext(opage, "/Annots [\n"); |
322 | |
323 | for (xr = page->first_xref; xr; xr = xr->next) { |
324 | object *annot; |
325 | char buf[256]; |
326 | |
327 | annot = new_object(&olist); |
328 | objref(opage, annot); |
329 | objtext(opage, "\n"); |
330 | |
331 | objtext(annot, "<<\n/Type /Annot\n/Subtype /Link\n/Rect ["); |
332 | sprintf(buf, "%g %g %g %g", |
333 | xr->lx / 4096.0, xr->by / 4096.0, |
334 | xr->rx / 4096.0, xr->ty / 4096.0); |
335 | objtext(annot, buf); |
336 | objtext(annot, "]\n/Border [0 0 0]\n"); |
337 | |
338 | if (xr->dest.type == PAGE) { |
339 | objtext(annot, "/Dest ["); |
340 | objref(annot, (object *)xr->dest.page->spare); |
341 | objtext(annot, " /XYZ null null null]\n"); |
342 | } else { |
7c8c4239 |
343 | objtext(annot, "/A <<\n/Type /Action\n/S /URI\n/URI "); |
344 | pdf_string(objtext, annot, xr->dest.url); |
345 | objtext(annot, "\n>>\n"); |
138d7ffb |
346 | } |
347 | |
348 | objtext(annot, ">>\n"); |
349 | } |
350 | |
351 | objtext(opage, "]\n"); |
352 | } |
353 | |
43341922 |
354 | objtext(opage, ">>\n"); |
355 | } |
356 | |
357 | /* |
f0e51ce1 |
358 | * Set up the outlines dictionary. |
359 | */ |
a615a778 |
360 | if (outlines) { |
f0e51ce1 |
361 | int topcount; |
362 | char buf[80]; |
363 | |
364 | objtext(outlines, "<<\n/Type /Outlines\n"); |
365 | topcount = make_outline(outlines, doc->outline_elements, |
366 | doc->n_outline_elements, TRUE); |
367 | sprintf(buf, "/Count %d\n>>\n", topcount); |
368 | objtext(outlines, buf); |
369 | } |
370 | |
371 | /* |
43341922 |
372 | * Assemble the final linear form of every object. |
373 | */ |
374 | for (o = olist.head; o; o = o->next) { |
375 | rdstringc rs = {0, 0, NULL}; |
376 | char text[80]; |
377 | |
378 | sprintf(text, "%d 0 obj\n", o->number); |
379 | rdaddsc(&rs, text); |
380 | |
381 | if (!o->main.text && o->stream.text) { |
382 | sprintf(text, "<<\n/Length %d\n>>\n", o->stream.pos); |
383 | rdaddsc(&o->main, text); |
384 | } |
385 | |
386 | assert(o->main.text); |
387 | rdaddsc(&rs, o->main.text); |
388 | sfree(o->main.text); |
389 | |
390 | if (rs.text[rs.pos-1] != '\n') |
391 | rdaddc(&rs, '\n'); |
392 | |
393 | if (o->stream.text) { |
394 | /* |
395 | * FIXME: If we ever start compressing stream data then |
396 | * it will have zero bytes in it, so we'll have to be |
397 | * more careful than this. |
398 | */ |
399 | rdaddsc(&rs, "stream\n"); |
400 | rdaddsc(&rs, o->stream.text); |
401 | rdaddsc(&rs, "\nendstream\n"); |
402 | sfree(o->stream.text); |
403 | } |
404 | |
405 | rdaddsc(&rs, "endobj\n"); |
406 | |
407 | o->final = rs.text; |
408 | o->size = rs.pos; |
409 | } |
410 | |
411 | /* |
412 | * Write out the PDF file. |
413 | */ |
414 | |
415 | fp = fopen(filename, "wb"); |
416 | if (!fp) { |
417 | error(err_cantopenw, filename); |
418 | return; |
419 | } |
420 | |
421 | /* |
09358aa7 |
422 | * Header. I'm going to put the version IDs in the header as |
423 | * well, simply in PDF comments. |
43341922 |
424 | */ |
425 | fileoff = fprintf(fp, "%%PDF-1.3\n"); |
09358aa7 |
426 | for (p = sourceform; p; p = p->next) |
427 | if (p->type == para_VersionID) |
428 | fileoff += pdf_versionid(fp, p->words); |
43341922 |
429 | |
430 | /* |
431 | * Body |
432 | */ |
433 | for (o = olist.head; o; o = o->next) { |
434 | o->fileoff = fileoff; |
435 | fwrite(o->final, 1, o->size, fp); |
436 | fileoff += o->size; |
437 | } |
438 | |
439 | /* |
440 | * Cross-reference table |
441 | */ |
442 | fprintf(fp, "xref\n"); |
443 | assert(olist.head->number == 1); |
444 | fprintf(fp, "0 %d\n", olist.tail->number + 1); |
445 | fprintf(fp, "0000000000 65535 f \n"); |
446 | for (o = olist.head; o; o = o->next) { |
447 | char entry[40]; |
448 | sprintf(entry, "%010d 00000 n \n", o->fileoff); |
449 | assert(strlen(entry) == 20); |
450 | fputs(entry, fp); |
451 | } |
452 | |
453 | /* |
454 | * Trailer |
455 | */ |
456 | fprintf(fp, "trailer\n<<\n/Size %d\n/Root %d 0 R\n>>\n", |
457 | olist.tail->number + 1, cat->number); |
458 | fprintf(fp, "startxref\n%d\n%%%%EOF\n", fileoff); |
459 | |
460 | fclose(fp); |
461 | |
462 | sfree(filename); |
463 | } |
464 | |
465 | static object *new_object(objlist *list) |
466 | { |
467 | object *obj = mknew(object); |
468 | |
469 | obj->list = list; |
470 | |
471 | obj->main.text = NULL; |
472 | obj->main.pos = obj->main.size = 0; |
473 | obj->stream.text = NULL; |
474 | obj->stream.pos = obj->stream.size = 0; |
475 | |
476 | obj->number = list->number++; |
477 | |
478 | obj->next = NULL; |
479 | if (list->tail) |
480 | list->tail->next = obj; |
481 | else |
482 | list->head = obj; |
483 | list->tail = obj; |
484 | |
485 | obj->size = 0; |
486 | obj->final = NULL; |
487 | |
488 | return obj; |
489 | } |
490 | |
491 | static void objtext(object *o, char const *text) |
492 | { |
493 | rdaddsc(&o->main, text); |
494 | } |
495 | |
496 | static void objstream(object *o, char const *text) |
497 | { |
498 | rdaddsc(&o->stream, text); |
499 | } |
500 | |
501 | static void objref(object *o, object *dest) |
502 | { |
503 | char buf[40]; |
504 | sprintf(buf, "%d 0 R", dest->number); |
505 | rdaddsc(&o->main, buf); |
506 | } |
507 | |
508 | static void make_pages_node(object *node, object *parent, page_data *first, |
509 | page_data *last, object *resources) |
510 | { |
511 | int count; |
512 | page_data *page; |
513 | char buf[80]; |
514 | |
515 | objtext(node, "<<\n/Type /Pages\n"); |
516 | if (parent) { |
517 | objtext(node, "/Parent "); |
518 | objref(node, parent); |
519 | objtext(node, "\n"); |
520 | } |
521 | |
522 | /* |
523 | * Count the pages in this stretch, to see if there are few |
524 | * enough to reference directly. |
525 | */ |
526 | count = 0; |
527 | for (page = first; page; page = page->next) { |
528 | count++; |
529 | if (page == last) |
530 | break; |
531 | } |
532 | |
533 | sprintf(buf, "/Count %d\n/Kids [\n", count); |
534 | objtext(node, buf); |
535 | |
536 | if (count > TREE_BRANCH) { |
537 | int i; |
538 | page_data *thisfirst, *thislast; |
539 | |
540 | page = first; |
541 | |
542 | for (i = 0; i < TREE_BRANCH; i++) { |
543 | int number = (i+1) * count / TREE_BRANCH - i * count / TREE_BRANCH; |
544 | thisfirst = page; |
545 | while (number--) { |
546 | thislast = page; |
547 | page = page->next; |
548 | } |
549 | |
550 | if (thisfirst == thislast) { |
551 | objref(node, (object *)thisfirst->spare); |
552 | objtext((object *)thisfirst->spare, "/Parent "); |
553 | objref((object *)thisfirst->spare, node); |
554 | objtext((object *)thisfirst->spare, "\n"); |
555 | } else { |
556 | object *newnode = new_object(node->list); |
557 | make_pages_node(newnode, node, thisfirst, thislast, NULL); |
558 | objref(node, newnode); |
559 | } |
560 | objtext(node, "\n"); |
561 | } |
562 | |
563 | assert(thislast == last || page == NULL); |
564 | |
565 | } else { |
566 | for (page = first; page; page = page->next) { |
567 | objref(node, (object *)page->spare); |
568 | objtext(node, "\n"); |
569 | objtext((object *)page->spare, "/Parent "); |
570 | objref((object *)page->spare, node); |
571 | objtext((object *)page->spare, "\n"); |
572 | if (page == last) |
573 | break; |
574 | } |
575 | } |
576 | |
577 | objtext(node, "]\n"); |
578 | |
579 | if (resources) { |
580 | objtext(node, "/Resources "); |
581 | objref(node, resources); |
582 | objtext(node, "\n"); |
583 | } |
584 | |
585 | objtext(node, ">>\n"); |
586 | } |
f0e51ce1 |
587 | |
588 | /* |
589 | * In text on the page, PDF uses the PostScript font model, which |
590 | * means that glyphs are identified by PS strings and hence font |
591 | * encoding can be managed independently of the supplied encoding |
592 | * of the font. However, in the document outline, the PDF spec |
ce1b04aa |
593 | * encodes in either PDFDocEncoding (a custom superset of |
594 | * ISO-8859-1) or UTF-16BE. |
f0e51ce1 |
595 | */ |
ce1b04aa |
596 | static char *pdf_outline_convert(wchar_t *s, int *len) { |
597 | char *ret; |
598 | |
599 | ret = utoa_careful_dup(s, CS_PDF); |
600 | |
601 | /* |
602 | * Very silly special case: if the returned string begins with |
603 | * FE FF, then the PDF reader will mistake it for a UTF-16BE |
604 | * string. So in this case we give up on PDFDocEncoding and |
605 | * encode it in UTF-16 straight away. |
606 | */ |
607 | if (ret && ret[0] == '\xFE' && ret[1] == '\xFF') { |
608 | sfree(ret); |
609 | ret = NULL; |
f0e51ce1 |
610 | } |
ce1b04aa |
611 | |
612 | if (!ret) { |
613 | ret = utoa_dup_len(s, CS_UTF16BE, len); |
614 | } else { |
615 | *len = strlen(ret); |
f0e51ce1 |
616 | } |
ce1b04aa |
617 | |
618 | return ret; |
f0e51ce1 |
619 | } |
620 | |
f0e51ce1 |
621 | static int make_outline(object *parent, outline_element *items, int n, |
622 | int open) |
623 | { |
624 | int level, totalcount = 0; |
625 | outline_element *itemp; |
626 | object *curr, *prev = NULL, *first = NULL, *last = NULL; |
f0e51ce1 |
627 | |
628 | assert(n > 0); |
629 | |
630 | level = items->level; |
631 | |
632 | while (n > 0) { |
7c8c4239 |
633 | char *title; |
ce1b04aa |
634 | int titlelen; |
f0e51ce1 |
635 | |
636 | /* |
637 | * Here we expect to be sitting on an item at the given |
638 | * level. So we start by constructing an outline entry for |
639 | * that item. |
640 | */ |
641 | assert(items->level == level); |
642 | |
ce1b04aa |
643 | title = pdf_outline_convert(items->pdata->outline_title, &titlelen); |
f0e51ce1 |
644 | |
645 | totalcount++; |
646 | curr = new_object(parent->list); |
647 | if (!first) first = curr; |
648 | last = curr; |
7c8c4239 |
649 | objtext(curr, "<<\n/Title "); |
ce1b04aa |
650 | pdf_string_len(objtext, curr, title, titlelen); |
7c8c4239 |
651 | objtext(curr, "\n/Parent "); |
f0e51ce1 |
652 | objref(curr, parent); |
653 | objtext(curr, "\n/Dest ["); |
be76d597 |
654 | objref(curr, (object *)items->pdata->first->page->spare); |
f0e51ce1 |
655 | objtext(curr, " /XYZ null null null]\n"); |
656 | if (prev) { |
657 | objtext(curr, "/Prev "); |
658 | objref(curr, prev); |
659 | objtext(curr, "\n"); |
660 | |
661 | objtext(prev, "/Next "); |
662 | objref(prev, curr); |
663 | objtext(prev, "\n>>\n"); |
664 | } |
665 | prev = curr; |
666 | |
667 | items++, n--; |
668 | for (itemp = items; itemp < items+n && itemp->level > level; |
669 | itemp++); |
670 | |
671 | if (itemp > items) { |
672 | char buf[80]; |
673 | int count = make_outline(curr, items, itemp - items, FALSE); |
674 | if (!open) |
675 | count = -count; |
676 | else |
677 | totalcount += count; |
678 | sprintf(buf, "/Count %d\n", count); |
679 | objtext(curr, buf); |
680 | } |
681 | |
682 | n -= itemp - items; |
683 | items = itemp; |
684 | } |
685 | objtext(prev, ">>\n"); |
686 | |
687 | assert(first && last); |
688 | objtext(parent, "/First "); |
689 | objref(parent, first); |
690 | objtext(parent, "\n/Last "); |
691 | objref(parent, last); |
692 | objtext(parent, "\n"); |
693 | |
694 | return totalcount; |
695 | } |
09358aa7 |
696 | |
697 | static int pdf_versionid(FILE *fp, word *words) |
698 | { |
699 | int ret; |
700 | |
701 | ret = fprintf(fp, "%% "); |
702 | |
703 | for (; words; words = words->next) { |
704 | char *text; |
705 | int type; |
706 | |
707 | switch (words->type) { |
708 | case word_HyperLink: |
709 | case word_HyperEnd: |
710 | case word_UpperXref: |
711 | case word_LowerXref: |
712 | case word_XrefEnd: |
713 | case word_IndexRef: |
714 | continue; |
715 | } |
716 | |
717 | type = removeattr(words->type); |
718 | |
719 | switch (type) { |
720 | case word_Normal: |
e4ea58f8 |
721 | text = utoa_dup(words->text, CS_ASCII); |
09358aa7 |
722 | break; |
723 | case word_WhiteSpace: |
724 | text = dupstr(" "); |
725 | break; |
726 | case word_Quote: |
727 | text = dupstr("'"); |
728 | break; |
729 | } |
730 | |
731 | fputs(text, fp); |
732 | ret += strlen(text); |
733 | sfree(text); |
734 | } |
735 | |
736 | ret += fprintf(fp, "\n"); |
737 | |
738 | return ret; |
739 | } |
7c8c4239 |
740 | |
ce1b04aa |
741 | static void pdf_string_len(void (*add)(object *, char const *), |
742 | object *o, char const *str, int len) |
7c8c4239 |
743 | { |
744 | char const *p; |
745 | |
746 | add(o, "("); |
ce1b04aa |
747 | for (p = str; len > 0; p++, len--) { |
748 | char c[10]; |
749 | if (*p < ' ' || *p > '~') { |
750 | sprintf(c, "\\%03o", 0xFF & (int)*p); |
751 | } else { |
752 | int n = 0; |
753 | if (*p == '\\' || *p == '(' || *p == ')') |
754 | c[n++] = '\\'; |
755 | c[n++] = *p; |
756 | c[n] = '\0'; |
757 | } |
7c8c4239 |
758 | add(o, c); |
759 | } |
760 | add(o, ")"); |
761 | } |
ce1b04aa |
762 | |
763 | static void pdf_string(void (*add)(object *, char const *), |
764 | object *o, char const *str) |
765 | { |
766 | pdf_string_len(add, o, str, strlen(str)); |
767 | } |