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