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Robustness
[llpp.git] / link.c
blob05fac6451c3c8282714c03ed6d71cd0b65feb14f
1 /* lots of code c&p-ed directly from mupdf */
2 #include <errno.h>
3 #include <stdio.h>
4 #include <ctype.h>
5 #include <string.h>
6 #include <stdlib.h>
7 #include <signal.h>
8 #include <wchar.h>
9
10 #include <unistd.h>
11 #include <pthread.h>
12 #include <sys/time.h>
13 #include <sys/types.h>
14 #include <sys/ioctl.h>
15
16 #ifdef __CYGWIN__
17 #include <cygwin/socket.h> /* FIONREAD */
18 #else
19 #include <spawn.h>
20 #endif
21
22 #include <regex.h>
23 #include <ctype.h>
24 #include <stdarg.h>
25 #include <limits.h>
26
27 #include <GL/gl.h>
28
29 #include <caml/fail.h>
30 #include <caml/alloc.h>
31 #include <caml/memory.h>
32 #include <caml/unixsupport.h>
33
34 #include <fitz.h>
35 #include <mupdf.h>
36 #include <mupdf-internal.h>
37 #include <muxps.h>
38 #include <muxps-internal.h>
39 #include <mucbz.h>
40
41 #include FT_FREETYPE_H
42
43 #define PIGGYBACK
44
45 #ifndef __USE_GNU
46 extern char **environ;
47 #endif
48
49 #define MIN(a,b) ((a) < (b) ? (a) : (b))
50 #define MAX(a,b) ((a) > (b) ? (a) : (b))
51
52 #if defined __GNUC__
53 #define NORETURN_ATTR __attribute__ ((noreturn))
54 #define UNUSED_ATTR __attribute__ ((unused))
55 #define OPTIMIZE_ATTR(n) __attribute__ ((optimize ("O"#n)))
56 #define GCC_FMT_ATTR(a, b) __attribute__ ((format (printf, a, b)))
57 #else
58 #define NORETURN_ATTR
59 #define UNUSED_ATTR
60 #define OPTIMIZE_ATTR(n)
61 #define GCC_FMT_ATTR(a, b)
62 #endif
63
64 #define FMT_s "zu"
65
66 #define FMT_ptr "p"
67 #define FMT_ptr_cast(p) (p)
68 #define FMT_ptr_cast2(p) (p)
69
70 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
71 err (int exitcode, const char *fmt, ...)
72 {
73 va_list ap;
74 int savederrno;
75
76 savederrno = errno;
77 va_start (ap, fmt);
78 vfprintf (stderr, fmt, ap);
79 va_end (ap);
80 fprintf (stderr, ": %s\n", strerror (savederrno));
81 fflush (stderr);
82 _exit (exitcode);
83 }
84
85 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
86 errx (int exitcode, const char *fmt, ...)
87 {
88 va_list ap;
89
90 va_start (ap, fmt);
91 vfprintf (stderr, fmt, ap);
92 va_end (ap);
93 fputc ('\n', stderr);
94 fflush (stderr);
95 _exit (exitcode);
96 }
97
98 #ifndef GL_TEXTURE_RECTANGLE_ARB
99 #define GL_TEXTURE_RECTANGLE_ARB 0x84F5
100 #endif
101
102 #ifndef GL_BGRA
103 #define GL_BGRA 0x80E1
104 #endif
105
106 #ifndef GL_UNSIGNED_INT_8_8_8_8
107 #define GL_UNSIGNED_INT_8_8_8_8 0x8035
108 #endif
109
110 #ifndef GL_UNSIGNED_INT_8_8_8_8_REV
111 #define GL_UNSIGNED_INT_8_8_8_8_REV 0x8367
112 #endif
113
114 #if 0
115 #define lprintf printf
116 #else
117 #define lprintf(...)
118 #endif
119
120 #define ARSERT(cond) for (;;) { \
121 if (!(cond)) { \
122 errx (1, "%s:%d " #cond, __FILE__, __LINE__); \
123 } \
124 break; \
125 }
126
127 struct slice {
128 int h;
129 int texindex;
130 };
131
132 struct tile {
133 int x, y, w, h;
134 int slicecount;
135 int sliceheight;
136 struct pbo *pbo;
137 fz_pixmap *pixmap;
138 struct slice slices[1];
139 };
140
141 struct pagedim {
142 int pageno;
143 int rotate;
144 int left;
145 int tctmready;
146 fz_bbox bounds;
147 fz_rect pagebox;
148 fz_rect mediabox;
149 fz_matrix ctm, zoomctm, lctm, tctm;
150 };
151
152 struct slink {
153 fz_bbox bbox;
154 fz_link *link;
155 };
156
157 enum { DPDF, DXPS, DCBZ };
158
159 struct page {
160 int tgen;
161 int sgen;
162 int type;
163 int pageno;
164 int pdimno;
165 fz_text_page *text;
166 fz_text_sheet *sheet;
167 union {
168 void *ptr;
169 pdf_page *pdfpage;
170 xps_page *xpspage;
171 cbz_page *cbzpage;
172 } u;
173 fz_display_list *dlist;
174 int slinkcount;
175 struct slink *slinks;
176 struct mark {
177 int i;
178 fz_text_span *span;
179 } fmark, lmark;
180 void (*freepage) (void *);
181 };
182
183 struct {
184 int type;
185 int sliceheight;
186 struct pagedim *pagedims;
187 int pagecount;
188 int pagedimcount;
189 union {
190 pdf_document *pdf;
191 xps_document *xps;
192 cbz_document *cbz;
193 } u;
194 fz_context *ctx;
195 int w, h;
196
197 int texindex;
198 int texcount;
199 GLuint *texids;
200
201 GLenum texiform;
202 GLenum texform;
203 GLenum texty;
204
205 fz_colorspace *colorspace;
206
207 struct {
208 int w, h;
209 struct slice *slice;
210 } *texowners;
211
212 int rotate;
213 int proportional;
214 int trimmargins;
215 int needoutline;
216 int gen;
217 int aalevel;
218
219 int trimanew;
220 fz_bbox trimfuzz;
221 fz_pixmap *pig;
222
223 pthread_t thread;
224 int cr, cw;
225 FT_Face face;
226
227 void (*closedoc) (void);
228 void (*freepage) (void *);
229
230 char *trimcachepath;
231
232 int pbo_usable;
233 void (*glBindBufferARB) (GLenum, GLuint);
234 GLboolean (*glUnmapBufferARB) (GLenum);
235 void *(*glMapBufferARB) (GLenum, GLenum);
236 void (*glBufferDataARB) (GLenum, GLsizei, void *, GLenum);
237 void (*glGenBuffersARB) (GLsizei, GLuint *);
238 void (*glDeleteBuffersARB) (GLsizei, GLuint *);
239 } state;
240
241 struct pbo {
242 GLuint id;
243 void *ptr;
244 size_t size;
245 };
246
247 static void UNUSED_ATTR debug_rect (const char *cap, fz_rect r)
248 {
249 printf ("%s(rect) %.2f,%.2f,%.2f,%.2f\n", cap, r.x0, r.y0, r.x1, r.y1);
250 }
251
252 static void UNUSED_ATTR debug_bbox (const char *cap, fz_bbox r)
253 {
254 printf ("%s(bbox) %d,%d,%d,%d\n", cap, r.x0, r.y0, r.x1, r.y1);
255 }
256
257 static void UNUSED_ATTR debug_matrix (const char *cap, fz_matrix m)
258 {
259 printf ("%s(matrix) %.2f,%.2f,%.2f,%.2f %.2f %.2f\n", cap,
260 m.a, m.b, m.c, m.d, m.e, m.f);
261 }
262
263 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
264
265 static void lock (const char *cap)
266 {
267 int ret = pthread_mutex_lock (&mutex);
268 if (ret) {
269 errx (1, "%s: pthread_mutex_lock: %s", cap, strerror (ret));
270 }
271 }
272
273 static void unlock (const char *cap)
274 {
275 int ret = pthread_mutex_unlock (&mutex);
276 if (ret) {
277 errx (1, "%s: pthread_mutex_unlock: %s", cap, strerror (ret));
278 }
279 }
280
281 static int trylock (const char *cap)
282 {
283 int ret = pthread_mutex_trylock (&mutex);
284 if (ret && ret != EBUSY) {
285 errx (1, "%s: pthread_mutex_trylock: %s", cap, strerror (ret));
286 }
287 return ret == EBUSY;
288 }
289
290 static void *parse_pointer (const char *cap, const char *s)
291 {
292 int ret;
293 void *ptr;
294
295 ret = sscanf (s, "%" FMT_ptr, FMT_ptr_cast (&ptr));
296 if (ret != 1) {
297 errx (1, "%s: cannot parse pointer in `%s'", cap, s);
298 }
299 return ptr;
300 }
301
302 static double now (void)
303 {
304 struct timeval tv;
305
306 if (gettimeofday (&tv, NULL)) {
307 err (1, "gettimeofday");
308 }
309 return tv.tv_sec + tv.tv_usec*1e-6;
310 }
311
312 static int hasdata (void)
313 {
314 int ret, avail;
315 ret = ioctl (state.cr, FIONREAD, &avail);
316 if (ret) err (1, "hasdata: FIONREAD error ret=%d", ret);
317 return avail > 0;
318 }
319
320 CAMLprim value ml_hasdata (value fd_v)
321 {
322 CAMLparam1 (fd_v);
323 int ret, avail;
324
325 ret = ioctl (Int_val (fd_v), FIONREAD, &avail);
326 if (ret) uerror ("ioctl (FIONREAD)", Nothing);
327 CAMLreturn (Val_bool (avail > 0));
328 }
329
330 static void readdata (void *p, int size)
331 {
332 ssize_t n;
333
334 again:
335 n = read (state.cr, p, size);
336 if (n < 0) {
337 if (errno == EINTR) goto again;
338 err (1, "read (req %d, ret %zd)", size, n);
339 }
340 if (n - size) {
341 if (!n) errx (1, "EOF while reading");
342 errx (1, "read (req %d, ret %zd)", size, n);
343 }
344 }
345
346 static void writedata (char *p, int size)
347 {
348 char buf[4];
349 ssize_t n;
350
351 buf[0] = (size >> 24) & 0xff;
352 buf[1] = (size >> 16) & 0xff;
353 buf[2] = (size >> 8) & 0xff;
354 buf[3] = (size >> 0) & 0xff;
355
356 n = write (state.cw, buf, 4);
357 if (n != 4) {
358 if (!n) errx (1, "EOF while writing length");
359 err (1, "write %zd", n);
360 }
361
362 n = write (state.cw, p, size);
363 if (n - size) {
364 if (!n) errx (1, "EOF while writing data");
365 err (1, "write (req %d, ret %zd)", size, n);
366 }
367 }
368
369 static int readlen (void)
370 {
371 unsigned char p[4];
372
373 readdata (p, 4);
374 return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
375 }
376
377 static void GCC_FMT_ATTR (1, 2) printd (const char *fmt, ...)
378 {
379 int size = 200, len;
380 va_list ap;
381 char *buf;
382
383 buf = malloc (size);
384 for (;;) {
385 if (!buf) err (1, "malloc for temp buf (%d bytes) failed", size);
386
387 va_start (ap, fmt);
388 len = vsnprintf (buf, size, fmt, ap);
389 va_end (ap);
390
391 if (len > -1 && len < size) {
392 writedata (buf, len);
393 break;
394 }
395
396 if (len > -1) {
397 size = len + 1;
398 }
399 else {
400 size *= 2;
401 }
402 buf = realloc (buf, size);
403 }
404 free (buf);
405 }
406
407 static void closepdf (void)
408 {
409 if (state.u.pdf) {
410 pdf_close_document (state.u.pdf);
411 state.u.pdf = NULL;
412 }
413 }
414
415 static void closexps (void)
416 {
417 if (state.u.xps) {
418 xps_close_document (state.u.xps);
419 state.u.xps = NULL;
420 }
421 }
422
423 static void closecbz (void)
424 {
425 if (state.u.cbz) {
426 cbz_close_document (state.u.cbz);
427 state.u.cbz = NULL;
428 }
429 }
430
431 static void freepdfpage (void *ptr)
432 {
433 pdf_free_page (state.u.pdf, ptr);
434 }
435
436 static void freeemptyxxxpage (void *ptr)
437 {
438 (void) ptr;
439 }
440
441 static void freexpspage (void *ptr)
442 {
443 xps_free_page (state.u.xps, ptr);
444 }
445
446 static void freecbzpage (void *ptr)
447 {
448 cbz_free_page (state.u.cbz, ptr);
449 }
450
451 static void openxref (char *filename, char *password)
452 {
453 int i, len;
454
455 for (i = 0; i < state.texcount; ++i) {
456 state.texowners[i].w = -1;
457 state.texowners[i].slice = NULL;
458 }
459
460 if (state.closedoc) state.closedoc ();
461
462 len = strlen (filename);
463
464 state.type = DPDF;
465 if (len > 4) {
466 char ext[4];
467
468 ext[0] = tolower ((int) filename[len-3]);
469 ext[1] = tolower ((int) filename[len-2]);
470 ext[2] = tolower ((int) filename[len-1]);
471
472 /**/ if (ext[0] == 'x' && ext[1] == 'p' && ext[2] == 's') {
473 state.type = DXPS;
474 }
475 else if (ext[0] == 'c' && ext[1] == 'b' && ext[2] == 'z') {
476 state.type = DCBZ;
477 }
478 }
479
480 if (state.pagedims) {
481 free (state.pagedims);
482 state.pagedims = NULL;
483 }
484 state.pagedimcount = 0;
485
486 fz_set_aa_level (state.ctx, state.aalevel);
487 switch (state.type) {
488 case DPDF:
489 state.u.pdf = pdf_open_document (state.ctx, filename);
490 if (pdf_needs_password (state.u.pdf)) {
491 int okay = pdf_authenticate_password (state.u.pdf, password);
492 if (!okay) {
493 errx (1, "invalid password");
494 }
495 }
496 state.pagecount = pdf_count_pages (state.u.pdf);
497 state.closedoc = closepdf;
498 state.freepage = freepdfpage;
499 break;
500
501 case DXPS:
502 state.u.xps = xps_open_document (state.ctx, filename);
503 state.pagecount = xps_count_pages (state.u.xps);
504 state.closedoc = closexps;
505 state.freepage = freexpspage;
506 break;
507
508 case DCBZ:
509 state.u.cbz = cbz_open_document (state.ctx, filename);
510 state.pagecount = cbz_count_pages (state.u.cbz);
511 state.closedoc = closecbz;
512 state.freepage = freecbzpage;
513 break;
514 }
515 }
516
517 static void pdfinfo (void)
518 {
519 if (state.type == DPDF) {
520 pdf_obj *infoobj;
521
522 printd ("info PDF version\t%d.%d",
523 state.u.pdf->version / 10, state.u.pdf->version % 10);
524
525 infoobj = pdf_dict_gets (state.u.pdf->trailer, "Info");
526 if (infoobj) {
527 int i;
528 char *s;
529 char *items[] = { "Title", "Author", "Creator",
530 "Producer", "CreationDate" };
531
532 for (i = 0; i < sizeof (items) / sizeof (*items); ++i) {
533 pdf_obj *obj = pdf_dict_gets (infoobj, items[i]);
534 s = pdf_to_utf8 (state.u.pdf, obj);
535 if (*s) {
536 if (i == 0) {
537 printd ("title %s", s);
538 }
539 printd ("info %s\t%s", items[i], s);
540 }
541 fz_free (state.ctx, s);
542 }
543 }
544 printd ("infoend");
545 }
546 }
547
548 static void unlinktile (struct tile *tile)
549 {
550 int i;
551
552 for (i = 0; i < tile->slicecount; ++i) {
553 struct slice *s = &tile->slices[i];
554
555 if (s->texindex != -1) {
556 if (state.texowners[s->texindex].slice == s) {
557 state.texowners[s->texindex].slice = NULL;
558 }
559 }
560 }
561 }
562
563 static void freepage (struct page *page)
564 {
565 if (page->text) {
566 fz_free_text_page (state.ctx, page->text);
567 }
568 if (page->sheet) {
569 fz_free_text_sheet (state.ctx, page->sheet);
570 }
571 if (page->slinks) {
572 free (page->slinks);
573 }
574 page->freepage (page->u.ptr);
575 fz_free_display_list (state.ctx, page->dlist);
576 free (page);
577 }
578
579 static void freetile (struct tile *tile)
580 {
581 unlinktile (tile);
582 if (!tile->pbo) {
583 #ifndef PIGGYBACK
584 fz_drop_pixmap (state.ctx, tile->pixmap);
585 #else
586 if (state.pig) {
587 fz_drop_pixmap (state.ctx, state.pig);
588 }
589 state.pig = tile->pixmap;
590 #endif
591 }
592 else {
593 free (tile->pbo);
594 fz_drop_pixmap (state.ctx, tile->pixmap);
595 }
596 free (tile);
597 }
598
599 #ifdef __ALTIVEC__
600 #include <altivec.h>
601
602 static int cacheline32bytes;
603
604 static void __attribute__ ((constructor)) clcheck (void)
605 {
606 char **envp = environ;
607 unsigned long *auxv;
608
609 while (*envp++);
610
611 for (auxv = (unsigned long *) envp; *auxv != 0; auxv += 2) {
612 if (*auxv == 19) {
613 cacheline32bytes = auxv[1] == 32;
614 return;
615 }
616 }
617 }
618
619 static void OPTIMIZE_ATTR (3) clearpixmap (fz_pixmap *pixmap)
620 {
621 size_t size = pixmap->w * pixmap->h * pixmap->n;
622 if (cacheline32bytes && size > 32) {
623 intptr_t a1, a2, diff;
624 size_t sizea, i;
625 vector unsigned char v = vec_splat_u8 (-1);
626 vector unsigned char *p;
627
628 a1 = a2 = (intptr_t) pixmap->samples;
629 a2 = (a1 + 31) & ~31;
630 diff = a2 - a1;
631 sizea = size - diff;
632 p = (void *) a2;
633
634 while (a1 != a2) *(char *) a1++ = 0xff;
635 for (i = 0; i < (sizea & ~31); i += 32) {
636 __asm volatile ("dcbz %0, %1"::"b"(a2),"r"(i));
637 vec_st (v, i, p);
638 vec_st (v, i + 16, p);
639 }
640 while (i < sizea) *((char *) a1 + i++) = 0xff;
641 }
642 else fz_clear_pixmap_with_value (state.ctx, pixmap, 0xff);
643 }
644 #else
645 #define clearpixmap(p) fz_clear_pixmap_with_value (state.ctx, p, 0xff)
646 #endif
647
648 static fz_matrix trimctm (pdf_page *page, int pindex)
649 {
650 fz_matrix ctm;
651 struct pagedim *pdim = &state.pagedims[pindex];
652
653 if (!pdim->tctmready) {
654 if (state.trimmargins) {
655 fz_rect realbox;
656
657 ctm = fz_concat (fz_rotate (-pdim->rotate), fz_scale (1, -1));
658 realbox = fz_transform_rect (ctm, pdim->mediabox);
659 ctm = fz_concat (ctm, fz_translate (-realbox.x0, -realbox.y0));
660 ctm = fz_concat (fz_invert_matrix (page->ctm), ctm);
661 }
662 else {
663 ctm = fz_identity;
664 }
665 pdim->tctm = ctm;
666 pdim->tctmready = 1;
667 }
668 return pdim->tctm;
669 }
670
671 static fz_matrix pagectm (struct page *page)
672 {
673 if (page->type == DPDF) {
674 return fz_concat (trimctm (page->u.pdfpage, page->pdimno),
675 state.pagedims[page->pdimno].ctm);
676 }
677 else {
678 fz_matrix ctm;
679 struct pagedim *pdim = &state.pagedims[page->pdimno];
680
681 ctm = state.pagedims[page->pdimno].ctm;
682 ctm = fz_concat (fz_translate (-pdim->mediabox.x0,
683 -pdim->mediabox.y0), ctm);
684 return ctm;
685 }
686 }
687
688 static void *loadpage (int pageno, int pindex)
689 {
690 fz_device *dev;
691 struct page *page = NULL;
692
693 page = calloc (sizeof (struct page), 1);
694 if (!page) {
695 err (1, "calloc page %d", pageno);
696 }
697
698 page->dlist = fz_new_display_list (state.ctx);
699 dev = fz_new_list_device (state.ctx, page->dlist);
700 fz_try (state.ctx) {
701 switch (state.type) {
702 case DPDF:
703 page->u.pdfpage = pdf_load_page (state.u.pdf, pageno);
704 pdf_run_page (state.u.pdf, page->u.pdfpage, dev, fz_identity, NULL);
705 page->freepage = freepdfpage;
706 break;
707
708 case DXPS:
709 page->u.xpspage = xps_load_page (state.u.xps, pageno);
710 xps_run_page (state.u.xps, page->u.xpspage, dev, fz_identity, NULL);
711 page->freepage = freexpspage;
712 break;
713
714 case DCBZ:
715 page->u.cbzpage = cbz_load_page (state.u.cbz, pageno);
716 cbz_run_page (state.u.cbz, page->u.cbzpage, dev, fz_identity, NULL);
717 page->freepage = freecbzpage;
718 break;
719 }
720 }
721 fz_catch (state.ctx) {
722 page->u.ptr = NULL;
723 page->freepage = freeemptyxxxpage;
724 }
725 fz_free_device (dev);
726
727 page->pdimno = pindex;
728 page->pageno = pageno;
729 page->sgen = state.gen;
730 page->tgen = state.gen;
731 page->type = state.type;
732
733 return page;
734 }
735
736 static struct tile *alloctile (int h)
737 {
738 int i;
739 int slicecount;
740 size_t tilesize;
741 struct tile *tile;
742
743 slicecount = (h + state.sliceheight - 1) / state.sliceheight;
744 tilesize = sizeof (*tile) + ((slicecount - 1) * sizeof (struct slice));
745 tile = calloc (tilesize, 1);
746 if (!tile) {
747 err (1, "can not allocate tile (%" FMT_s " bytes)", tilesize);
748 }
749 for (i = 0; i < slicecount; ++i) {
750 int sh = MIN (h, state.sliceheight);
751 tile->slices[i].h = sh;
752 tile->slices[i].texindex = -1;
753 h -= sh;
754 }
755 tile->slicecount = slicecount;
756 tile->sliceheight = state.sliceheight;
757 return tile;
758 }
759
760 #ifdef OBSCURED_OPT
761 struct obs {
762 int cured;
763 fz_bbox b;
764 };
765
766 static void obs_fill_image (fz_device *dev, fz_image *image, fz_matrix ctm,
767 float alpha)
768 {
769 struct obs *obs = dev->user;
770
771 if (!obs->cured && fabs (1.0 - alpha) < 1e6) {
772 fz_bbox b = fz_round_rect (fz_transform_rect (ctm, fz_unit_rect));
773 b = fz_intersect_bbox (b, obs->b);
774 obs->cured = b.x0 == obs->b.x0
775 && b.x1 == obs->b.x1
776 && b.y0 == obs->b.y0
777 && b.y1 == obs->b.y1;
778 }
779 }
780
781 static int obscured (struct page *page, fz_bbox bbox)
782 {
783 fz_device dev;
784 struct obs obs;
785
786 memset (&dev, 0, sizeof (dev));
787 memset (&obs, 0, sizeof (obs));
788 dev.hints = 0;
789 dev.flags = 0;
790 dev.user = &obs;
791 dev.ctx = state.ctx;
792 dev.fill_image = obs_fill_image;
793 obs.b = bbox;
794 fz_run_display_list (page->dlist, &dev, pagectm (page), bbox, NULL);
795 return obs.cured;
796 }
797 #define OBSCURED obscured
798 #else
799 #define OBSCURED(a, b) 0
800 #endif
801
802 static struct tile *rendertile (struct page *page, int x, int y, int w, int h,
803 struct pbo *pbo)
804 {
805 fz_bbox bbox;
806 fz_device *dev;
807 struct tile *tile;
808 struct pagedim *pdim;
809
810 tile = alloctile (h);
811 pdim = &state.pagedims[page->pdimno];
812
813 bbox = pdim->bounds;
814 bbox.x0 += x;
815 bbox.y0 += y;
816 bbox.x1 = bbox.x0 + w;
817 bbox.y1 = bbox.y0 + h;
818
819 if (state.pig) {
820 if (state.pig->w == w
821 && state.pig->h == h
822 && state.pig->colorspace == state.colorspace) {
823 tile->pixmap = state.pig;
824 tile->pixmap->x = bbox.x0;
825 tile->pixmap->y = bbox.y0;
826 }
827 else {
828 fz_drop_pixmap (state.ctx, state.pig);
829 }
830 state.pig = NULL;
831 }
832 if (!tile->pixmap) {
833 if (pbo) {
834 tile->pixmap =
835 fz_new_pixmap_with_bbox_and_data (state.ctx, state.colorspace,
836 bbox, pbo->ptr);
837 tile->pbo = pbo;
838 }
839 else {
840 tile->pixmap =
841 fz_new_pixmap_with_bbox (state.ctx, state.colorspace, bbox);
842 }
843 }
844
845 tile->w = w;
846 tile->h = h;
847 if (!page->u.ptr || ((w < 128 && h < 128) || !OBSCURED (page, bbox))) {
848 clearpixmap (tile->pixmap);
849 }
850 dev = fz_new_draw_device (state.ctx, tile->pixmap);
851 fz_run_display_list (page->dlist, dev, pagectm (page), bbox, NULL);
852 fz_free_device (dev);
853
854 return tile;
855 }
856
857 static void initpdims (void)
858 {
859 double start, end;
860 int pageno, trim, show;
861 FILE *trimf = NULL;
862 int trimw = 0;
863
864 start = now ();
865
866 if (state.trimmargins && state.trimcachepath) {
867 trimf = fopen (state.trimcachepath, "rb");
868 if (!trimf) {
869 trimf = fopen (state.trimcachepath, "wb");
870 trimw = 1;
871 }
872 }
873 for (pageno = 0; pageno < state.pagecount; ++pageno) {
874 int rotate = 0;
875 struct pagedim *p;
876 fz_rect mediabox;
877
878 switch (state.type) {
879 case DPDF: {
880 pdf_obj *pageobj = state.u.pdf->page_objs[pageno];
881
882 if (state.trimmargins) {
883 pdf_obj *obj;
884 pdf_page *page;
885
886 fz_try (state.ctx) {
887 page = pdf_load_page (state.u.pdf, pageno);
888 obj = pdf_dict_gets (pageobj, "llpp.TrimBox");
889 trim = state.trimanew || !obj;
890 if (trim) {
891 fz_rect rect;
892 fz_bbox bbox;
893 fz_matrix ctm;
894 fz_device *dev;
895
896 dev = fz_new_bbox_device (state.ctx, &bbox);
897 dev->hints |= FZ_IGNORE_SHADE;
898 ctm = fz_invert_matrix (page->ctm);
899 pdf_run_page (state.u.pdf, page, dev, fz_identity, NULL);
900 fz_free_device (dev);
901
902 rect.x0 = bbox.x0 + state.trimfuzz.x0;
903 rect.x1 = bbox.x1 + state.trimfuzz.x1;
904 rect.y0 = bbox.y0 + state.trimfuzz.y0;
905 rect.y1 = bbox.y1 + state.trimfuzz.y1;
906 rect = fz_transform_rect (ctm, rect);
907 rect = fz_intersect_rect (rect, page->mediabox);
908
909 if (fz_is_empty_rect (rect)) {
910 mediabox = page->mediabox;
911 }
912 else {
913 mediabox = rect;
914 }
915
916 obj = pdf_new_array (state.ctx, 4);
917 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.x0));
918 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.y0));
919 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.x1));
920 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.y1));
921 pdf_dict_puts (pageobj, "llpp.TrimBox", obj);
922 }
923 else {
924 mediabox.x0 = pdf_to_real (pdf_array_get (obj, 0));
925 mediabox.y0 = pdf_to_real (pdf_array_get (obj, 1));
926 mediabox.x1 = pdf_to_real (pdf_array_get (obj, 2));
927 mediabox.y1 = pdf_to_real (pdf_array_get (obj, 3));
928 }
929
930 rotate = page->rotate;
931 pdf_free_page (state.u.pdf, page);
932
933 show = trim ? pageno % 5 == 0 : pageno % 20 == 0;
934 if (show) {
935 printd ("progress %f Trimming %d",
936 (double) (pageno + 1) / state.pagecount,
937 pageno + 1);
938 }
939 }
940 fz_catch (state.ctx) {
941 fprintf (stderr, "failed to load page %d\n", pageno+1);
942 }
943 }
944 else {
945 fz_rect cropbox;
946
947 mediabox = pdf_to_rect (state.ctx,
948 pdf_dict_gets (pageobj, "MediaBox"));
949 if (fz_is_empty_rect (mediabox)) {
950 fprintf (stderr, "cannot find page size for page %d\n",
951 pageno+1);
952 mediabox.x0 = 0;
953 mediabox.y0 = 0;
954 mediabox.x1 = 612;
955 mediabox.y1 = 792;
956 }
957
958 cropbox = pdf_to_rect (state.ctx,
959 pdf_dict_gets (pageobj, "CropBox"));
960 if (!fz_is_empty_rect (cropbox)) {
961 mediabox = fz_intersect_rect (mediabox, cropbox);
962 }
963 rotate = pdf_to_int (pdf_dict_gets (pageobj, "Rotate"));
964 }
965 break;
966 }
967
968 case DXPS:
969 {
970 xps_page *page;
971
972 fz_try (state.ctx) {
973 page = xps_load_page (state.u.xps, pageno);
974 mediabox = xps_bound_page (state.u.xps, page);
975 rotate = 0;
976 if (state.trimmargins) {
977 fz_rect rect;
978 fz_bbox bbox;
979 fz_device *dev;
980
981 dev = fz_new_bbox_device (state.ctx, &bbox);
982 dev->hints |= FZ_IGNORE_SHADE;
983 xps_run_page (state.u.xps, page, dev, fz_identity, NULL);
984 fz_free_device (dev);
985
986 rect.x0 = bbox.x0 + state.trimfuzz.x0;
987 rect.x1 = bbox.x1 + state.trimfuzz.x1;
988 rect.y0 = bbox.y0 + state.trimfuzz.y0;
989 rect.y1 = bbox.y1 + state.trimfuzz.y1;
990 rect = fz_intersect_rect (rect, mediabox);
991
992 if (!fz_is_empty_rect (rect)) {
993 mediabox = rect;
994 }
995 }
996 xps_free_page (state.u.xps, page);
997 printd ("progress %f loading %d",
998 (double) (pageno + 1) / state.pagecount,
999 pageno + 1);
1000 }
1001 fz_catch (state.ctx) {
1002 }
1003 }
1004 break;
1005
1006 case DCBZ:
1007 {
1008 rotate = 0;
1009 if (state.trimmargins && trimw) {
1010 cbz_page *page;
1011
1012 fz_try (state.ctx) {
1013 page = cbz_load_page (state.u.cbz, pageno);
1014 mediabox = cbz_bound_page (state.u.cbz, page);
1015 cbz_free_page (state.u.cbz, page);
1016 printd ("progress %f Trimming %d",
1017 (double) (pageno + 1) / state.pagecount,
1018 pageno + 1);
1019 }
1020 fz_catch (state.ctx) {
1021 fprintf (stderr, "failed to load page %d\n", pageno+1);
1022 mediabox.x0 = 0;
1023 mediabox.y0 = 0;
1024 mediabox.x1 = 900;
1025 mediabox.y1 = 900;
1026 }
1027 if (trimf) {
1028 int n = fwrite (&mediabox, sizeof (mediabox), 1, trimf);
1029 if (n - 1) {
1030 err (1, "fwrite trim mediabox");
1031 }
1032 }
1033 }
1034 else {
1035 if (trimf) {
1036 int n = fread (&mediabox, sizeof (mediabox), 1, trimf);
1037 if (n - 1) {
1038 err (1, "fread trim mediabox");
1039 }
1040 }
1041 else {
1042 mediabox.x0 = mediabox.y0 = 0;
1043 mediabox.x1 = 900;
1044 mediabox.y1 = 900;
1045 }
1046 }
1047 }
1048 break;
1049
1050 default:
1051 ARSERT (0 && state.type);
1052 }
1053
1054 if (state.pagedimcount == 0
1055 || (p = &state.pagedims[state.pagedimcount-1], p->rotate != rotate)
1056 || memcmp (&p->mediabox, &mediabox, sizeof (mediabox))) {
1057 size_t size;
1058
1059 size = (state.pagedimcount + 1) * sizeof (*state.pagedims);
1060 state.pagedims = realloc (state.pagedims, size);
1061 if (!state.pagedims) {
1062 err (1, "realloc pagedims to %" FMT_s " (%d elems)",
1063 size, state.pagedimcount + 1);
1064 }
1065
1066 p = &state.pagedims[state.pagedimcount++];
1067 p->rotate = rotate;
1068 p->mediabox = mediabox;
1069 p->pageno = pageno;
1070 }
1071 }
1072 end = now ();
1073 if (state.trimmargins) {
1074 printd ("progress 1 Trimmed %d pages in %f seconds",
1075 state.pagecount, end - start);
1076 }
1077 else {
1078 printd ("vmsg Processed %d pages in %f seconds",
1079 state.pagecount, end - start);
1080 }
1081 state.trimanew = 0;
1082 if (trimf) {
1083 if (fclose (trimf)) {
1084 err (1, "fclose");
1085 }
1086 }
1087 }
1088
1089 static void layout (void)
1090 {
1091 int pindex;
1092 fz_rect box;
1093 fz_matrix ctm;
1094 double zoom, w, maxw = 0;
1095 struct pagedim *p = state.pagedims;
1096
1097 if (state.proportional) {
1098 for (pindex = 0; pindex < state.pagedimcount; ++pindex, ++p) {
1099 box = fz_transform_rect (fz_rotate (p->rotate + state.rotate),
1100 p->mediabox);
1101 w = box.x1 - box.x0;
1102 maxw = MAX (w, maxw);
1103 }
1104 }
1105
1106 p = state.pagedims;
1107 for (pindex = 0; pindex < state.pagedimcount; ++pindex, ++p) {
1108 fz_bbox bbox;
1109
1110 ctm = fz_rotate (state.rotate);
1111 box = fz_transform_rect (fz_rotate (p->rotate + state.rotate),
1112 p->mediabox);
1113 w = box.x1 - box.x0;
1114
1115 if (state.proportional) {
1116 double scale = w / maxw;
1117 zoom = (state.w / w) * scale;
1118 }
1119 else {
1120 zoom = state.w / w;
1121 }
1122
1123 p->zoomctm = fz_scale (zoom, zoom);
1124 ctm = fz_concat (p->zoomctm, ctm);
1125
1126 p->pagebox = fz_transform_rect (fz_rotate (p->rotate), p->mediabox);
1127 p->pagebox.x1 -= p->pagebox.x0;
1128 p->pagebox.y1 -= p->pagebox.y0;
1129 p->pagebox.x0 = 0;
1130 p->pagebox.y0 = 0;
1131 bbox = fz_round_rect (fz_transform_rect (ctm, p->pagebox));
1132
1133 p->bounds = bbox;
1134 p->left = state.proportional ? ((maxw - w) * zoom) / 2.0 : 0;
1135 p->ctm = ctm;
1136
1137 ctm = fz_identity;
1138 ctm = fz_concat (ctm, fz_translate (0, -p->mediabox.y1));
1139 ctm = fz_concat (ctm, fz_scale (zoom, -zoom));
1140 ctm = fz_concat (ctm, fz_rotate (p->rotate + state.rotate));
1141 p->lctm = ctm;
1142
1143 p->tctmready = 0;
1144 }
1145
1146 while (p-- != state.pagedims) {
1147 int x0 = MIN (p->bounds.x0, p->bounds.x1);
1148 int y0 = MIN (p->bounds.y0, p->bounds.y1);
1149 int x1 = MAX (p->bounds.x0, p->bounds.x1);
1150 int y1 = MAX (p->bounds.y0, p->bounds.y1);
1151 int w = x1 - x0;
1152 int h = y1 - y0;
1153
1154 printd ("pdim %d %d %d %d", p->pageno, w, h, p->left);
1155 }
1156 }
1157
1158 static void recurse_outline (fz_outline *outline, int level)
1159 {
1160 while (outline) {
1161 fz_link_dest *dest;
1162 int i, top = 0;
1163 struct pagedim *pdim = state.pagedims;
1164
1165 dest = &outline->dest;
1166 for (i = 0; i < state.pagedimcount; ++i) {
1167 if (state.pagedims[i].pageno > dest->ld.gotor.page)
1168 break;
1169 pdim = &state.pagedims[i];
1170 }
1171 if (dest->ld.gotor.flags & fz_link_flag_t_valid) {
1172 fz_point p;
1173 p.x = 0;
1174 p.y = dest->ld.gotor.lt.y;
1175 p = fz_transform_point (pdim->lctm, p);
1176 top = p.y;
1177 }
1178 if (dest->ld.gotor.page >= 0 && dest->ld.gotor.page < 1<<30) {
1179 int h;
1180 double y0, y1;
1181
1182 y0 = MIN (pdim->bounds.y0, pdim->bounds.y1);
1183 y1 = MAX (pdim->bounds.y0, pdim->bounds.y1);
1184 h = y1 - y0;
1185 printd ("o %d %d %d %d %s",
1186 level, dest->ld.gotor.page, top, h, outline->title);
1187 }
1188 if (outline->down) {
1189 recurse_outline (outline->down, level + 1);
1190 }
1191 outline = outline->next;
1192 }
1193 }
1194
1195 static void process_outline (void)
1196 {
1197 fz_outline *outline;
1198
1199 if (!state.needoutline) return;
1200
1201 state.needoutline = 0;
1202 switch (state.type) {
1203 case DPDF:
1204 outline = pdf_load_outline (state.u.pdf);
1205 break;
1206 case DXPS:
1207 outline = xps_load_outline (state.u.xps);
1208 break;
1209 default:
1210 outline = NULL;
1211 break;
1212 }
1213 if (outline) {
1214 recurse_outline (outline, 0);
1215 fz_free_outline (state.ctx, outline);
1216 }
1217 }
1218
1219 static char *strofspan (fz_text_span *span)
1220 {
1221 char *p;
1222 char utf8[10];
1223 fz_text_char *ch;
1224 size_t size = 0, cap = 80;
1225
1226 p = malloc (cap + 1);
1227 if (!p) return NULL;
1228
1229 for (ch = span->text; ch < span->text + span->len; ++ch) {
1230 int n = fz_runetochar (utf8, ch->c);
1231 if (size + n > cap) {
1232 cap *= 2;
1233 p = realloc (p, cap + 1);
1234 if (!p) return NULL;
1235 }
1236
1237 memcpy (p + size, utf8, n);
1238 size += n;
1239 }
1240 p[size] = 0;
1241 return p;
1242 }
1243
1244 static int matchspan (regex_t *re, fz_text_span *span, fz_matrix ctm,
1245 int stop, int pageno, double start)
1246 {
1247 int ret;
1248 char *p;
1249 regmatch_t rm;
1250 int a, b, c;
1251 fz_rect *sb, *eb;
1252 fz_point p1, p2, p3, p4;
1253
1254 p = strofspan (span);
1255 if (!p) return -1;
1256
1257 ret = regexec (re, p, 1, &rm, 0);
1258 if (ret) {
1259 free (p);
1260 if (ret != REG_NOMATCH) {
1261 size_t size;
1262 char errbuf[80];
1263 size = regerror (ret, re, errbuf, sizeof (errbuf));
1264 printd ("msg regexec error `%.*s'",
1265 (int) size, errbuf);
1266 return -1;
1267 }
1268 return 0;
1269 }
1270 else {
1271 int l = span->len;
1272 for (a = 0, c = 0; c < rm.rm_so && a < l; a++) {
1273 c += fz_runelen (span->text[a].c);
1274 }
1275 for (b = a; c < rm.rm_eo - 1 && b < l; b++) {
1276 c += fz_runelen (span->text[b].c);
1277 }
1278
1279 if (fz_runelen (span->text[b].c) > 1) {
1280 b = MAX (0, b-1);
1281 }
1282 sb = &span->text[MIN (a, l-1)].bbox;
1283 eb = &span->text[MIN (b, l-1)].bbox;
1284
1285 p1.x = sb->x0;
1286 p1.y = sb->y0;
1287 p2.x = eb->x1;
1288 p2.y = sb->y0;
1289 p3.x = eb->x1;
1290 p3.y = eb->y1;
1291 p4.x = sb->x0;
1292 p4.y = eb->y1;
1293
1294 if (!stop) {
1295 printd ("firstmatch %d %d %f %f %f %f %f %f %f %f",
1296 pageno, 1,
1297 p1.x, p1.y,
1298 p2.x, p2.y,
1299 p3.x, p3.y,
1300 p4.x, p4.y);
1301
1302 printd ("progress 1 found at %d `%.*s' in %f sec",
1303 pageno + 1, (int) (rm.rm_eo - rm.rm_so), &p[rm.rm_so],
1304 now () - start);
1305 }
1306 else {
1307 printd ("match %d %d %f %f %f %f %f %f %f %f",
1308 pageno, 2,
1309 p1.x, p1.y,
1310 p2.x, p2.y,
1311 p3.x, p3.y,
1312 p4.x, p4.y);
1313 }
1314 free (p);
1315 return 1;
1316 }
1317 }
1318
1319 static int compareblocks (const void *l, const void *r)
1320 {
1321 fz_text_block const *ls = l;
1322 fz_text_block const* rs = r;
1323 return ls->bbox.y0 - rs->bbox.y0;
1324 }
1325
1326 /* wishful thinking function */
1327 static void search (regex_t *re, int pageno, int y, int forward)
1328 {
1329 int i, j;
1330 fz_matrix ctm;
1331 fz_device *tdev;
1332 union { void *ptr; pdf_page *pdfpage; xps_page *xpspage; } u;
1333 fz_text_page *text;
1334 fz_text_sheet *sheet;
1335 struct pagedim *pdim, *pdimprev;
1336 int stop = 0, niters = 0;
1337 double start, end;
1338
1339 if (!(state.type == DPDF || state.type == DXPS))
1340 return;
1341
1342 start = now ();
1343 while (pageno >= 0 && pageno < state.pagecount && !stop) {
1344 if (niters++ == 5) {
1345 niters = 0;
1346 if (hasdata ()) {
1347 printd ("progress 1 attention requested aborting search at %d",
1348 pageno);
1349 stop = 1;
1350 }
1351 else {
1352 printd ("progress %f searching in page %d",
1353 (double) (pageno + 1) / state.pagecount,
1354 pageno);
1355 }
1356 }
1357 pdimprev = NULL;
1358 for (i = 0; i < state.pagedimcount; ++i) {
1359 pdim = &state.pagedims[i];
1360 if (pdim->pageno == pageno) {
1361 goto found;
1362 }
1363 if (pdim->pageno > pageno) {
1364 pdim = pdimprev;
1365 goto found;
1366 }
1367 pdimprev = pdim;
1368 }
1369 pdim = pdimprev;
1370 found:
1371
1372 sheet = fz_new_text_sheet (state.ctx);
1373 text = fz_new_text_page (state.ctx, fz_infinite_rect);
1374 tdev = fz_new_text_device (state.ctx, sheet, text);
1375
1376 switch (state.type) {
1377 case DPDF:
1378 u.ptr = NULL;
1379 fz_try (state.ctx) {
1380 u.pdfpage = pdf_load_page (state.u.pdf, pageno);
1381 trimctm (u.pdfpage, pdim - state.pagedims);
1382 ctm = fz_concat (pdim->tctm, pdim->zoomctm);
1383 pdf_run_page (state.u.pdf, u.pdfpage, tdev, ctm, NULL);
1384 }
1385 fz_catch (state.ctx) {
1386 fz_free_device (tdev);
1387 u.ptr = NULL;
1388 goto nextiter;
1389 }
1390 break;
1391
1392 case DXPS:
1393 u.xpspage = xps_load_page (state.u.xps, pageno);
1394 ctm = pdim->ctm;
1395 xps_run_page (state.u.xps, u.xpspage, tdev, ctm, NULL);
1396 break;
1397
1398 default:
1399 ARSERT (0 && state.type);
1400 }
1401
1402 qsort (text->blocks, text->len, sizeof (*text->blocks), compareblocks);
1403 fz_free_device (tdev);
1404
1405 for (j = 0; j < text->len; ++j) {
1406 int k;
1407 fz_text_block *block;
1408
1409 block = &text->blocks[forward ? j : text->len - 1 - j];
1410
1411 for (k = 0; k < block->len; ++k) {
1412 fz_text_line *line;
1413 fz_text_span *span;
1414
1415 if (forward) {
1416 line = &block->lines[k];
1417 if (line->bbox.y0 < y + 1) continue;
1418 }
1419 else {
1420 line = &block->lines[block->len - 1 - k];
1421 if (line->bbox.y0 > y - 1) continue;
1422 }
1423
1424 for (span = line->spans;
1425 span < line->spans + line->len;
1426 ++span) {
1427
1428 switch (matchspan (re, span, ctm, stop, pageno, start)) {
1429 case 0: break;
1430 case 1: stop = 1; break;
1431 case -1: stop = 1; goto endloop;
1432 }
1433 }
1434 }
1435 }
1436 nextiter:
1437 if (forward) {
1438 pageno += 1;
1439 y = 0;
1440 }
1441 else {
1442 pageno -= 1;
1443 y = INT_MAX;
1444 }
1445 endloop:
1446 fz_free_text_page (state.ctx, text);
1447 fz_free_text_sheet (state.ctx, sheet);
1448 if (u.ptr) {
1449 state.freepage (u.ptr);
1450 }
1451 }
1452 end = now ();
1453 if (!stop) {
1454 printd ("progress 1 no matches %f sec", end - start);
1455 }
1456 printd ("clearrects");
1457 }
1458
1459 static void set_tex_params (int colorspace)
1460 {
1461 union {
1462 unsigned char b;
1463 unsigned int s;
1464 } endianness = {1};
1465
1466 switch (colorspace) {
1467 case 0:
1468 state.texiform = GL_RGBA8;
1469 state.texform = GL_RGBA;
1470 state.texty = GL_UNSIGNED_BYTE;
1471 state.colorspace = fz_device_rgb;
1472 break;
1473 case 1:
1474 state.texiform = GL_RGBA8;
1475 state.texform = GL_BGRA;
1476 state.texty = endianness.s > 1
1477 ? GL_UNSIGNED_INT_8_8_8_8
1478 : GL_UNSIGNED_INT_8_8_8_8_REV;
1479 state.colorspace = fz_device_bgr;
1480 break;
1481 case 2:
1482 state.texiform = GL_LUMINANCE_ALPHA;
1483 state.texform = GL_LUMINANCE_ALPHA;
1484 state.texty = GL_UNSIGNED_BYTE;
1485 state.colorspace = fz_device_gray;
1486 break;
1487 default:
1488 errx (1, "invalid colorspce %d", colorspace);
1489 }
1490 }
1491
1492 static void realloctexts (int texcount)
1493 {
1494 size_t size;
1495
1496 if (texcount == state.texcount) return;
1497
1498 if (texcount < state.texcount) {
1499 glDeleteTextures (state.texcount - texcount,
1500 state.texids + texcount);
1501 }
1502
1503 size = texcount * sizeof (*state.texids);
1504 state.texids = realloc (state.texids, size);
1505 if (!state.texids) {
1506 err (1, "realloc texids %" FMT_s, size);
1507 }
1508
1509 size = texcount * sizeof (*state.texowners);
1510 state.texowners = realloc (state.texowners, size);
1511 if (!state.texowners) {
1512 err (1, "realloc texowners %" FMT_s, size);
1513 }
1514 if (texcount > state.texcount) {
1515 int i;
1516
1517 glGenTextures (texcount - state.texcount,
1518 state.texids + state.texcount);
1519 for (i = state.texcount; i < texcount; ++i) {
1520 state.texowners[i].w = -1;
1521 state.texowners[i].slice = NULL;
1522 }
1523 }
1524 state.texcount = texcount;
1525 state.texindex = 0;
1526 }
1527
1528 static char *mbtoutf8 (char *s)
1529 {
1530 char *p, *r;
1531 wchar_t *tmp;
1532 size_t i, ret, len;
1533
1534 len = mbstowcs (NULL, s, strlen (s));
1535 if (len == 0) {
1536 return s;
1537 }
1538 else {
1539 if (len == (size_t) -1) {
1540 return s;
1541 }
1542 }
1543
1544 tmp = malloc (len * sizeof (wchar_t));
1545 if (!tmp) {
1546 return s;
1547 }
1548
1549 ret = mbstowcs (tmp, s, len);
1550 if (ret == (size_t) -1) {
1551 free (tmp);
1552 return s;
1553 }
1554
1555 len = 0;
1556 for (i = 0; i < ret; ++i) {
1557 len += fz_runelen (tmp[i]);
1558 }
1559
1560 p = r = malloc (len + 1);
1561 if (!r) {
1562 free (tmp);
1563 return s;
1564 }
1565
1566 for (i = 0; i < ret; ++i) {
1567 p += fz_runetochar (p, tmp[i]);
1568 }
1569 *p = 0;
1570 free (tmp);
1571 return r;
1572 }
1573
1574 CAMLprim value ml_mbtoutf8 (value s_v)
1575 {
1576 CAMLparam1 (s_v);
1577 CAMLlocal1 (ret_v);
1578 char *s, *r;
1579
1580 s = String_val (s_v);
1581 r = mbtoutf8 (s);
1582 if (r == s) {
1583 ret_v = s_v;
1584 }
1585 else {
1586 ret_v = caml_copy_string (r);
1587 free (r);
1588 }
1589 CAMLreturn (ret_v);
1590 }
1591
1592 static void * mainloop (void *unused)
1593 {
1594 char *p = NULL;
1595 int len, ret, oldlen = 0;
1596
1597 for (;;) {
1598 len = readlen ();
1599 if (len == 0) {
1600 errx (1, "readlen returned 0");
1601 }
1602
1603 if (oldlen < len + 1) {
1604 p = realloc (p, len + 1);
1605 if (!p) {
1606 err (1, "realloc %d failed", len + 1);
1607 }
1608 oldlen = len + 1;
1609 }
1610 readdata (p, len);
1611 p[len] = 0;
1612
1613 if (!strncmp ("open", p, 4)) {
1614 size_t filenamelen;
1615 char *password;
1616 char *filename = p + 5;
1617 char *utf8filename;
1618
1619 filenamelen = strlen (filename);
1620 password = filename + filenamelen + 1;
1621
1622 openxref (filename, password);
1623 pdfinfo ();
1624 initpdims ();
1625 utf8filename = mbtoutf8 (filename);
1626 printd ("msg Opened %s (press h/F1 to get help)", utf8filename);
1627 if (utf8filename != filename) {
1628 free (utf8filename);
1629 }
1630 state.needoutline = 1;
1631 }
1632 else if (!strncmp ("cs", p, 2)) {
1633 int i, colorspace;
1634
1635 ret = sscanf (p + 2, " %d", &colorspace);
1636 if (ret != 1) {
1637 errx (1, "malformed cs `%.*s' ret=%d", len, p, ret);
1638 }
1639 lock ("cs");
1640 set_tex_params (colorspace);
1641 for (i = 0; i < state.texcount; ++i) {
1642 state.texowners[i].w = -1;
1643 state.texowners[i].slice = NULL;
1644 }
1645 unlock ("cs");
1646 }
1647 else if (!strncmp ("freepage", p, 8)) {
1648 void *ptr;
1649
1650 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1651 if (ret != 1) {
1652 errx (1, "malformed freepage `%.*s' ret=%d", len, p, ret);
1653 }
1654 freepage (ptr);
1655 }
1656 else if (!strncmp ("freetile", p, 8)) {
1657 void *ptr;
1658
1659 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1660 if (ret != 1) {
1661 errx (1, "malformed freetile `%.*s' ret=%d", len, p, ret);
1662 }
1663 freetile (ptr);
1664 }
1665 else if (!strncmp ("search", p, 6)) {
1666 int icase, pageno, y, ret, len2, forward;
1667 char *pattern;
1668 regex_t re;
1669
1670 ret = sscanf (p + 6, " %d %d %d %d,%n",
1671 &icase, &pageno, &y, &forward, &len2);
1672 if (ret != 4) {
1673 errx (1, "malformed search `%s' ret=%d", p, ret);
1674 }
1675
1676 pattern = p + 6 + len2;
1677 ret = regcomp (&re, pattern,
1678 REG_EXTENDED | (icase ? REG_ICASE : 0));
1679 if (ret) {
1680 char errbuf[80];
1681 size_t size;
1682
1683 size = regerror (ret, &re, errbuf, sizeof (errbuf));
1684 printd ("msg regcomp failed `%.*s'", (int) size, errbuf);
1685 }
1686 else {
1687 search (&re, pageno, y, forward);
1688 regfree (&re);
1689 }
1690 }
1691 else if (!strncmp ("geometry", p, 8)) {
1692 int w, h;
1693
1694 printd ("clear");
1695 ret = sscanf (p + 8, " %d %d", &w, &h);
1696 if (ret != 2) {
1697 errx (1, "malformed geometry `%.*s' ret=%d", len, p, ret);
1698 }
1699
1700 lock ("geometry");
1701 state.h = h;
1702 if (w != state.w) {
1703 int i;
1704 state.w = w;
1705 for (i = 0; i < state.texcount; ++i) {
1706 state.texowners[i].slice = NULL;
1707 }
1708 }
1709 layout ();
1710 process_outline ();
1711 state.gen++;
1712 unlock ("geometry");
1713 printd ("continue %d", state.pagecount);
1714 }
1715 else if (!strncmp ("reqlayout", p, 9)) {
1716 int rotate, proportional;
1717
1718 printd ("clear");
1719 ret = sscanf (p + 9, " %d %d", &rotate, &proportional);
1720 if (ret != 2) {
1721 errx (1, "bad reqlayout line `%.*s' ret=%d", len, p, ret);
1722 }
1723 lock ("reqlayout");
1724 if (state.rotate != rotate || state.proportional != proportional) {
1725 state.gen += 1;
1726 }
1727 state.rotate = rotate;
1728 state.proportional = proportional;
1729 layout ();
1730 process_outline ();
1731 state.gen++;
1732 unlock ("reqlayout");
1733 printd ("continue %d", state.pagecount);
1734 }
1735 else if (!strncmp ("page", p, 4)) {
1736 double a, b;
1737 struct page *page;
1738 int pageno, pindex, ret;
1739
1740 ret = sscanf (p + 4, " %d %d", &pageno, &pindex);
1741 if (ret != 2) {
1742 errx (1, "bad render line `%.*s' ret=%d", len, p, ret);
1743 }
1744
1745 lock ("page");
1746 a = now ();
1747 page = loadpage (pageno, pindex);
1748 b = now ();
1749 unlock ("page");
1750
1751 printd ("page %" FMT_ptr " %f", FMT_ptr_cast2 (page), b - a);
1752 }
1753 else if (!strncmp ("tile", p, 4)) {
1754 int x, y, w, h, ret;
1755 struct page *page;
1756 struct tile *tile;
1757 double a, b;
1758 void *data;
1759
1760 ret = sscanf (p + 4, " %" FMT_ptr " %d %d %d %d %" FMT_ptr,
1761 FMT_ptr_cast (&page), &x, &y, &w, &h, &data);
1762 if (ret != 6) {
1763 errx (1, "bad tile line `%.*s' ret=%d", len, p, ret);
1764 }
1765
1766 lock ("tile");
1767 a = now ();
1768 tile = rendertile (page, x, y, w, h, data);
1769 b = now ();
1770 unlock ("tile");
1771
1772 printd ("tile %d %d %" FMT_ptr " %u %f",
1773 x, y,
1774 FMT_ptr_cast2 (tile),
1775 tile->w * tile->h * tile->pixmap->n,
1776 b - a);
1777 }
1778 else if (!strncmp ("settrim", p, 7)) {
1779 int trimmargins;
1780 fz_bbox fuzz;
1781
1782 ret = sscanf (p + 7, " %d %d %d %d %d", &trimmargins,
1783 &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
1784 if (ret != 5) {
1785 errx (1, "malformed settrim `%.*s' ret=%d", len, p, ret);
1786 }
1787 printd ("clear");
1788 lock ("settrim");
1789 state.trimmargins = trimmargins;
1790 state.needoutline = 1;
1791 if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
1792 state.trimanew = 1;
1793 state.trimfuzz = fuzz;
1794 }
1795 state.pagedimcount = 0;
1796 free (state.pagedims);
1797 state.pagedims = NULL;
1798 initpdims ();
1799 layout ();
1800 process_outline ();
1801 unlock ("settrim");
1802 printd ("continue %d", state.pagecount);
1803 }
1804 else if (!strncmp ("sliceh", p, 6)) {
1805 int h;
1806
1807 ret = sscanf (p + 6, " %d", &h);
1808 if (ret != 1) {
1809 errx (1, "malformed sliceh `%.*s' ret=%d", len, p, ret);
1810 }
1811 if (h != state.sliceheight) {
1812 int i;
1813
1814 state.sliceheight = h;
1815 for (i = 0; i < state.texcount; ++i) {
1816 state.texowners[i].w = -1;
1817 state.texowners[i].h = -1;
1818 state.texowners[i].slice = NULL;
1819 }
1820 }
1821 }
1822 else if (!strncmp ("interrupt", p, 9)) {
1823 printd ("vmsg interrupted");
1824 }
1825 else {
1826 errx (1, "unknown command %.*s", len, p);
1827 }
1828 }
1829 return 0;
1830 }
1831
1832 CAMLprim value ml_realloctexts (value texcount_v)
1833 {
1834 CAMLparam1 (texcount_v);
1835 int ok;
1836
1837 if (trylock ("ml_realloctexts")) {
1838 ok = 0;
1839 goto done;
1840 }
1841 realloctexts (Int_val (texcount_v));
1842 ok = 1;
1843 unlock ("ml_realloctexts");
1844
1845 done:
1846 CAMLreturn (Val_bool (ok));
1847 }
1848
1849 static void showsel (struct page *page, int ox, int oy)
1850 {
1851 int seen = 0;
1852 fz_bbox bbox;
1853 fz_text_line *line;
1854 fz_text_span *span;
1855 fz_text_block *block;
1856 struct mark first, last;
1857
1858 first = page->fmark;
1859 last = page->lmark;
1860
1861 if (!first.span || !last.span) return;
1862
1863 glEnable (GL_BLEND);
1864 glBlendFunc (GL_SRC_ALPHA, GL_SRC_ALPHA);
1865 glColor4f (0.5f, 0.5f, 0.0f, 0.6f);
1866
1867 ox += state.pagedims[page->pdimno].bounds.x0;
1868 oy += state.pagedims[page->pdimno].bounds.y0;
1869 for (block = page->text->blocks;
1870 block < page->text->blocks + page->text->len;
1871 ++block) {
1872 for (line = block->lines;
1873 line < block->lines + block->len;
1874 ++line) {
1875 for (span = line->spans;
1876 span < line->spans + line->len;
1877 ++span) {
1878 int i, j, k;
1879
1880 bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0;
1881
1882 j = 0;
1883 k = span->len - 1;
1884
1885 if (span == page->fmark.span && span == page->lmark.span) {
1886 seen = 1;
1887 j = MIN (first.i, last.i);
1888 k = MAX (first.i, last.i);
1889 }
1890 else if (span == first.span) {
1891 seen = 1;
1892 j = first.i;
1893 }
1894 else if (span == last.span) {
1895 seen = 1;
1896 k = last.i;
1897 }
1898
1899 if (seen) {
1900 for (i = j; i <= k; ++i) {
1901 fz_bbox b = fz_round_rect (span->text[i].bbox);
1902 bbox = fz_union_bbox (bbox, b);
1903 }
1904 lprintf ("%d %d %d %d oy=%d ox=%d\n",
1905 bbox.x0,
1906 bbox.y0,
1907 bbox.x1,
1908 bbox.y1,
1909 oy, ox);
1910
1911 glRecti (bbox.x0 + ox, bbox.y0 + oy,
1912 bbox.x1 + ox, bbox.y1 + oy);
1913 if (span == last.span) {
1914 goto done;
1915 }
1916 }
1917 }
1918 }
1919 }
1920 done:
1921 glDisable (GL_BLEND);
1922 }
1923
1924 #include "glfont.c"
1925
1926 static void highlightlinks (struct page *page, int xoff, int yoff)
1927 {
1928 fz_matrix ctm;
1929 fz_link *link, *links;
1930
1931 switch (page->type) {
1932 case DPDF:
1933 links = page->u.pdfpage->links;
1934 break;
1935
1936 case DXPS:
1937 links = page->u.xpspage->links;
1938 break;
1939
1940 default:
1941 return;
1942 }
1943
1944 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
1945 glEnable (GL_LINE_STIPPLE);
1946 glLineStipple (0.5, 0xcccc);
1947
1948 xoff -= state.pagedims[page->pdimno].bounds.x0;
1949 yoff -= state.pagedims[page->pdimno].bounds.y0;
1950 ctm = fz_concat (pagectm (page), fz_translate (xoff, yoff));
1951
1952 glBegin (GL_QUADS);
1953 for (link = links; link; link = link->next) {
1954 fz_point p1, p2, p3, p4;
1955
1956 p1.x = link->rect.x0;
1957 p1.y = link->rect.y0;
1958
1959 p2.x = link->rect.x1;
1960 p2.y = link->rect.y0;
1961
1962 p3.x = link->rect.x1;
1963 p3.y = link->rect.y1;
1964
1965 p4.x = link->rect.x0;
1966 p4.y = link->rect.y1;
1967
1968 p1 = fz_transform_point (ctm, p1);
1969 p2 = fz_transform_point (ctm, p2);
1970 p3 = fz_transform_point (ctm, p3);
1971 p4 = fz_transform_point (ctm, p4);
1972
1973 switch (link->dest.kind) {
1974 case FZ_LINK_GOTO: glColor3ub (255, 0, 0); break;
1975 case FZ_LINK_URI: glColor3ub (0, 0, 255); break;
1976 default: glColor3ub (0, 0, 0); break;
1977 }
1978
1979 glVertex2f (p1.x, p1.y);
1980 glVertex2f (p2.x, p2.y);
1981 glVertex2f (p3.x, p3.y);
1982 glVertex2f (p4.x, p4.y);
1983 }
1984 glEnd ();
1985
1986 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
1987 glDisable (GL_LINE_STIPPLE);
1988 }
1989
1990 static int compareslinks (const void *l, const void *r)
1991 {
1992 struct slink const *ls = l;
1993 struct slink const *rs = r;
1994 if (ls->bbox.y0 == rs->bbox.y0) {
1995 return rs->bbox.x0 - rs->bbox.x0;
1996 }
1997 return ls->bbox.y0 - rs->bbox.y0;
1998 }
1999
2000 static void droptext (struct page *page)
2001 {
2002 if (page->text) {
2003 fz_free_text_page (state.ctx, page->text);
2004 page->fmark.i = -1;
2005 page->lmark.i = -1;
2006 page->fmark.span = NULL;
2007 page->lmark.span = NULL;
2008 page->text = NULL;
2009 }
2010 if (page->sheet) {
2011 fz_free_text_sheet (state.ctx, page->sheet);
2012 }
2013 }
2014
2015 static void dropslinks (struct page *page)
2016 {
2017 if (page->slinks) {
2018 free (page->slinks);
2019 page->slinks = NULL;
2020 page->slinkcount = 0;
2021 }
2022 }
2023
2024 static void ensureslinks (struct page *page)
2025 {
2026 fz_matrix ctm;
2027 int i, count = 0;
2028 size_t slinksize = sizeof (*page->slinks);
2029 fz_link *link, *links;
2030
2031 if (state.gen != page->sgen) {
2032 dropslinks (page);
2033 page->sgen = state.gen;
2034 }
2035 if (page->slinks) return;
2036
2037 switch (page->type) {
2038 case DPDF:
2039 links = page->u.pdfpage->links;
2040 ctm = fz_concat (trimctm (page->u.pdfpage, page->pdimno),
2041 state.pagedims[page->pdimno].ctm);
2042 break;
2043
2044 case DXPS:
2045 links = page->u.xpspage->links;
2046 ctm = state.pagedims[page->pdimno].ctm;
2047 break;
2048
2049 default:
2050 return;
2051 }
2052
2053 for (link = links; link; link = link->next) {
2054 count++;
2055 }
2056 if (count > 0) {
2057 page->slinkcount = count;
2058 page->slinks = calloc (count, slinksize);
2059 if (!page->slinks) {
2060 err (1, "realloc slinks %d", count);
2061 }
2062
2063 for (i = 0, link = links; link; ++i, link = link->next) {
2064 page->slinks[i].link = link;
2065 page->slinks[i].bbox =
2066 fz_round_rect (fz_transform_rect (ctm, link->rect));
2067 }
2068 qsort (page->slinks, count, slinksize, compareslinks);
2069 }
2070 }
2071
2072 /* slightly tweaked fmt_ulong by D.J. Bernstein */
2073 static void fmt_linkn (char *s, unsigned int u)
2074 {
2075 unsigned int len; unsigned int q;
2076 int zma = 'z' - 'a' + 1;
2077 len = 1; q = u;
2078 while (q > zma - 1) { ++len; q /= zma; }
2079 if (s) {
2080 s += len;
2081 do { *--s = 'a' + (u % zma) - (u < zma && len > 1); u /= zma; } while(u);
2082 /* handles u == 0 */
2083 }
2084 s[len] = 0;
2085 }
2086
2087 static void highlightslinks (struct page *page, int xoff, int yoff,
2088 int noff, char *targ, int tlen, int hfsize)
2089 {
2090 int i;
2091 char buf[40];
2092 struct slink *slink;
2093 double x0, y0, x1, y1, w;
2094
2095 ensureslinks (page);
2096 glColor3ub (0xc3, 0xb0, 0x91);
2097 for (i = 0; i < page->slinkcount; ++i) {
2098 fmt_linkn (buf, i + noff);
2099 if (!tlen || !strncmp (targ, buf, tlen)) {
2100 slink = &page->slinks[i];
2101
2102 x0 = slink->bbox.x0 + xoff - 5;
2103 y1 = slink->bbox.y0 + yoff - 5;
2104 y0 = y1 + 10 + hfsize;
2105 w = measure_string (state.face, hfsize, buf);
2106 x1 = x0 + w + 10;
2107 glRectd (x0, y0, x1, y1);
2108 }
2109 }
2110
2111 glEnable (GL_BLEND);
2112 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2113 glEnable (GL_TEXTURE_2D);
2114 glColor3ub (0, 0, 0);
2115 for (i = 0; i < page->slinkcount; ++i) {
2116 fmt_linkn (buf, i + noff);
2117 if (!tlen || !strncmp (targ, buf, tlen)) {
2118 slink = &page->slinks[i];
2119
2120 x0 = slink->bbox.x0 + xoff;
2121 y0 = slink->bbox.y0 + yoff + hfsize;
2122 draw_string (state.face, hfsize, x0, y0, buf);
2123 }
2124 }
2125 glDisable (GL_TEXTURE_2D);
2126 glDisable (GL_BLEND);
2127 }
2128
2129
2130 static void uploadslice (struct tile *tile, struct slice *slice)
2131 {
2132 int offset;
2133 struct slice *slice1;
2134 unsigned char *texdata;
2135
2136 offset = 0;
2137 for (slice1 = tile->slices; slice != slice1; slice1++) {
2138 offset += slice1->h * tile->w * tile->pixmap->n;
2139 }
2140 if (slice->texindex != -1 && slice->texindex < state.texcount
2141 && state.texowners[slice->texindex].slice == slice) {
2142 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[slice->texindex]);
2143 }
2144 else {
2145 int subimage = 0;
2146 int texindex = state.texindex++ % state.texcount;
2147
2148 if (state.texowners[texindex].w == tile->w) {
2149 if (state.texowners[texindex].h >= slice->h) {
2150 subimage = 1;
2151 }
2152 else {
2153 state.texowners[texindex].h = slice->h;
2154 }
2155 }
2156 else {
2157 state.texowners[texindex].h = slice->h;
2158 }
2159
2160 state.texowners[texindex].w = tile->w;
2161 state.texowners[texindex].slice = slice;
2162 slice->texindex = texindex;
2163
2164 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[texindex]);
2165 if (tile->pbo) {
2166 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
2167 texdata = 0;
2168 }
2169 else {
2170 texdata = tile->pixmap->samples;
2171 }
2172 if (subimage) {
2173 glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB,
2174 0,
2175 0,
2176 0,
2177 tile->w,
2178 slice->h,
2179 state.texform,
2180 state.texty,
2181 texdata+offset
2182 );
2183 }
2184 else {
2185 glTexImage2D (GL_TEXTURE_RECTANGLE_ARB,
2186 0,
2187 state.texiform,
2188 tile->w,
2189 slice->h,
2190 0,
2191 state.texform,
2192 state.texty,
2193 texdata+offset
2194 );
2195 }
2196 if (tile->pbo) {
2197 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
2198 }
2199 }
2200 }
2201
2202 CAMLprim value ml_drawtile (value args_v, value ptr_v)
2203 {
2204 CAMLparam2 (args_v, ptr_v);
2205 int dispx = Int_val (Field (args_v, 0));
2206 int dispy = Int_val (Field (args_v, 1));
2207 int dispw = Int_val (Field (args_v, 2));
2208 int disph = Int_val (Field (args_v, 3));
2209 int tilex = Int_val (Field (args_v, 4));
2210 int tiley = Int_val (Field (args_v, 5));
2211 char *s = String_val (ptr_v);
2212 struct tile *tile = parse_pointer ("ml_drawtile", s);
2213
2214 glEnable (GL_TEXTURE_RECTANGLE_ARB);
2215 {
2216 int slicey, firstslice;
2217 struct slice *slice;
2218
2219 firstslice = tiley / tile->sliceheight;
2220 slice = &tile->slices[firstslice];
2221 slicey = tiley % tile->sliceheight;
2222
2223 while (disph > 0) {
2224 int dh;
2225
2226 dh = slice->h - slicey;
2227 dh = MIN (disph, dh);
2228 uploadslice (tile, slice);
2229
2230 glBegin (GL_QUADS);
2231 {
2232 glTexCoord2i (tilex, slicey);
2233 glVertex2i (dispx, dispy);
2234
2235 glTexCoord2i (tilex+dispw, slicey);
2236 glVertex2i (dispx+dispw, dispy);
2237
2238 glTexCoord2i (tilex+dispw, slicey+dh);
2239 glVertex2i (dispx+dispw, dispy+dh);
2240
2241 glTexCoord2i (tilex, slicey+dh);
2242 glVertex2i (dispx, dispy+dh);
2243 }
2244 glEnd ();
2245
2246 dispy += dh;
2247 disph -= dh;
2248 slice++;
2249 ARSERT (!(slice - tile->slices >= tile->slicecount && disph > 0));
2250 slicey = 0;
2251 }
2252 }
2253 glDisable (GL_TEXTURE_RECTANGLE_ARB);
2254 CAMLreturn (Val_unit);
2255 }
2256
2257 CAMLprim value ml_postprocess (value ptr_v, value hlinks_v,
2258 value xoff_v, value yoff_v,
2259 value li_v)
2260 {
2261 CAMLparam5 (ptr_v, hlinks_v, xoff_v, yoff_v, li_v);
2262 int xoff = Int_val (xoff_v);
2263 int yoff = Int_val (yoff_v);
2264 int noff = Int_val (Field (li_v, 0));
2265 char *targ = String_val (Field (li_v, 1));
2266 int tlen = caml_string_length (Field (li_v, 1));
2267 int hfsize = Int_val (Field (li_v, 2));
2268 char *s = String_val (ptr_v);
2269 int hlmask = Int_val (hlinks_v);
2270 struct page *page = parse_pointer ("ml_postprocess", s);
2271
2272 if (!page->u.ptr) {
2273 /* deal with loadpage failed pages */
2274 goto done;
2275 }
2276
2277 if (hlmask & 1) highlightlinks (page, xoff, yoff);
2278 if (trylock ("ml_postprocess")) {
2279 noff = 0;
2280 goto done;
2281 }
2282 if (hlmask & 2) {
2283 highlightslinks (page, xoff, yoff, noff, targ, tlen, hfsize);
2284 noff = page->slinkcount;
2285 }
2286 showsel (page, xoff, yoff);
2287 unlock ("ml_postprocess");
2288
2289 done:
2290 CAMLreturn (Val_int (noff));
2291 }
2292
2293 static fz_link *getlink (struct page *page, int x, int y)
2294 {
2295 fz_point p;
2296 fz_matrix ctm;
2297 fz_link *link, *links;
2298
2299 switch (page->type) {
2300 case DPDF:
2301 ctm = trimctm (page->u.pdfpage, page->pdimno);
2302 links = page->u.pdfpage->links;
2303 break;
2304
2305 case DXPS:
2306 ctm = fz_identity;
2307 links = page->u.xpspage->links;
2308 break;
2309
2310 default:
2311 return NULL;
2312 }
2313 p.x = x;
2314 p.y = y;
2315
2316 ctm = fz_concat (ctm, state.pagedims[page->pdimno].ctm);
2317 ctm = fz_invert_matrix (ctm);
2318 p = fz_transform_point (ctm, p);
2319
2320 for (link = links; link; link = link->next) {
2321 if (p.x >= link->rect.x0 && p.x <= link->rect.x1) {
2322 if (p.y >= link->rect.y0 && p.y <= link->rect.y1) {
2323 return link;
2324 }
2325 }
2326 }
2327 return NULL;
2328 }
2329
2330 static void ensuretext (struct page *page)
2331 {
2332 if (state.gen != page->tgen) {
2333 droptext (page);
2334 page->tgen = state.gen;
2335 }
2336 if (!page->text) {
2337 fz_device *tdev;
2338
2339 page->text = fz_new_text_page (state.ctx, fz_infinite_rect);
2340 page->sheet = fz_new_text_sheet (state.ctx);
2341 tdev = fz_new_text_device (state.ctx, page->sheet, page->text);
2342 fz_run_display_list (page->dlist,
2343 tdev,
2344 pagectm (page),
2345 fz_infinite_bbox, NULL);
2346 qsort (page->text->blocks, page->text->len,
2347 sizeof (*page->text->blocks), compareblocks);
2348 fz_free_device (tdev);
2349 }
2350 }
2351
2352 CAMLprim value ml_find_page_with_links (value start_page_v, value dir_v)
2353 {
2354 CAMLparam2 (start_page_v, dir_v);
2355 CAMLlocal1 (ret_v);
2356 int i, dir = Int_val (dir_v);
2357 int start_page = Int_val (start_page_v);
2358 int end_page = dir > 0 ? state.pagecount : -1;
2359
2360 ret_v = Val_int (0);
2361 if (!(state.type == DPDF || state.type == DXPS)) {
2362 goto done;
2363 }
2364
2365 lock ("ml_findpage_with_links");
2366 for (i = start_page + dir; i != end_page; i += dir) {
2367 int found;
2368
2369 switch (state.type) {
2370 case DPDF:
2371 {
2372 pdf_page *page = NULL;
2373
2374 fz_try (state.ctx) {
2375 page = pdf_load_page (state.u.pdf, i);
2376 found = !!page->links;
2377 }
2378 fz_catch (state.ctx) {
2379 found = 0;
2380 }
2381 if (page) {
2382 freepdfpage (page);
2383 }
2384 }
2385 break;
2386 case DXPS:
2387 {
2388 xps_page *page = xps_load_page (state.u.xps, i);
2389 found = !!page->links;
2390 freexpspage (page);
2391 }
2392 break;
2393
2394 default:
2395 ARSERT ("invalid document type");
2396 }
2397
2398 if (found) {
2399 ret_v = caml_alloc_small (1, 1);
2400 Field (ret_v, 0) = Val_int (i);
2401 goto unlock;
2402 }
2403 }
2404 unlock:
2405 unlock ("ml_findpage_with_links");
2406
2407 done:
2408 CAMLreturn (ret_v);
2409 }
2410
2411 enum { dir_first, dir_last};
2412 enum { dir_first_visible, dir_left, dir_right, dir_down, dir_up };
2413
2414 CAMLprim value ml_findlink (value ptr_v, value dir_v)
2415 {
2416 CAMLparam2 (ptr_v, dir_v);
2417 CAMLlocal2 (ret_v, pos_v);
2418 struct page *page;
2419 int dirtag, i, slinkindex;
2420 struct slink *found = NULL ,*slink;
2421 char *s = String_val (ptr_v);
2422
2423 page = parse_pointer ("ml_findlink", s);
2424 ret_v = Val_int (0);
2425 if (trylock ("ml_findlink")) {
2426 goto done;
2427 }
2428
2429 ensureslinks (page);
2430
2431 if (Is_block (dir_v)) {
2432 dirtag = Tag_val (dir_v);
2433 switch (dirtag) {
2434 case dir_first_visible:
2435 {
2436 int x0, y0, dir, first_index, last_index;
2437
2438 pos_v = Field (dir_v, 0);
2439 x0 = Int_val (Field (pos_v, 0));
2440 y0 = Int_val (Field (pos_v, 1));
2441 dir = Int_val (Field (pos_v, 2));
2442
2443 if (dir >= 0) {
2444 dir = 1;
2445 first_index = 0;
2446 last_index = page->slinkcount;
2447 }
2448 else {
2449 first_index = page->slinkcount - 1;
2450 last_index = -1;
2451 }
2452
2453 for (i = first_index; i != last_index; i += dir) {
2454 slink = &page->slinks[i];
2455 if (slink->bbox.y0 >= y0 && slink->bbox.x0 >= x0) {
2456 found = slink;
2457 break;
2458 }
2459 }
2460 }
2461 break;
2462
2463 case dir_left:
2464 slinkindex = Int_val (Field (dir_v, 0));
2465 found = &page->slinks[slinkindex];
2466 for (i = slinkindex - 1; i >= 0; --i) {
2467 slink = &page->slinks[i];
2468 if (slink->bbox.x0 < found->bbox.x0) {
2469 found = slink;
2470 break;
2471 }
2472 }
2473 break;
2474
2475 case dir_right:
2476 slinkindex = Int_val (Field (dir_v, 0));
2477 found = &page->slinks[slinkindex];
2478 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2479 slink = &page->slinks[i];
2480 if (slink->bbox.x0 > found->bbox.x0) {
2481 found = slink;
2482 break;
2483 }
2484 }
2485 break;
2486
2487 case dir_down:
2488 slinkindex = Int_val (Field (dir_v, 0));
2489 found = &page->slinks[slinkindex];
2490 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2491 slink = &page->slinks[i];
2492 if (slink->bbox.y0 >= found->bbox.y0) {
2493 found = slink;
2494 break;
2495 }
2496 }
2497 break;
2498
2499 case dir_up:
2500 slinkindex = Int_val (Field (dir_v, 0));
2501 found = &page->slinks[slinkindex];
2502 for (i = slinkindex - 1; i >= 0; --i) {
2503 slink = &page->slinks[i];
2504 if (slink->bbox.y0 <= found->bbox.y0) {
2505 found = slink;
2506 break;
2507 }
2508 }
2509 break;
2510 }
2511 }
2512 else {
2513 dirtag = Int_val (dir_v);
2514 switch (dirtag) {
2515 case dir_first:
2516 found = page->slinks;
2517 break;
2518
2519 case dir_last:
2520 if (page->slinks) {
2521 found = page->slinks + (page->slinkcount - 1);
2522 }
2523 break;
2524 }
2525 }
2526 if (found) {
2527 ret_v = caml_alloc_small (2, 1);
2528 Field (ret_v, 0) = Val_int (found - page->slinks);
2529 }
2530
2531 unlock ("ml_findlink");
2532 done:
2533 CAMLreturn (ret_v);
2534 }
2535
2536 enum { uuri, ugoto, utext, uunexpected, ulaunch, unamed, uremote };
2537
2538 #define LINKTOVAL \
2539 { \
2540 int pageno; \
2541 \
2542 switch (link->dest.kind) { \
2543 case FZ_LINK_GOTO: \
2544 { \
2545 fz_point p; \
2546 \
2547 pageno = link->dest.ld.gotor.page; \
2548 p.x = 0; \
2549 p.y = 0; \
2550 \
2551 if (link->dest.ld.gotor.flags & fz_link_flag_t_valid) { \
2552 p.y = link->dest.ld.gotor.lt.y; \
2553 p = fz_transform_point (pdim->lctm, p); \
2554 } \
2555 tup_v = caml_alloc_tuple (2); \
2556 ret_v = caml_alloc_small (1, ugoto); \
2557 Field (tup_v, 0) = Val_int (pageno); \
2558 Field (tup_v, 1) = Val_int (p.y); \
2559 Field (ret_v, 0) = tup_v; \
2560 } \
2561 break; \
2562 \
2563 case FZ_LINK_URI: \
2564 str_v = caml_copy_string (link->dest.ld.uri.uri); \
2565 ret_v = caml_alloc_small (1, uuri); \
2566 Field (ret_v, 0) = str_v; \
2567 break; \
2568 \
2569 case FZ_LINK_LAUNCH: \
2570 str_v = caml_copy_string (link->dest.ld.launch.file_spec); \
2571 ret_v = caml_alloc_small (1, ulaunch); \
2572 Field (ret_v, 0) = str_v; \
2573 break; \
2574 \
2575 case FZ_LINK_NAMED: \
2576 str_v = caml_copy_string (link->dest.ld.named.named); \
2577 ret_v = caml_alloc_small (1, unamed); \
2578 Field (ret_v, 0) = str_v; \
2579 break; \
2580 \
2581 case FZ_LINK_GOTOR: \
2582 str_v = caml_copy_string (link->dest.ld.gotor.file_spec); \
2583 pageno = link->dest.ld.gotor.page; \
2584 tup_v = caml_alloc_tuple (2); \
2585 ret_v = caml_alloc_small (1, uremote); \
2586 Field (tup_v, 0) = str_v; \
2587 Field (tup_v, 1) = Val_int (pageno); \
2588 Field (ret_v, 0) = tup_v; \
2589 break; \
2590 \
2591 default: \
2592 { \
2593 char buf[80]; \
2594 \
2595 snprintf (buf, sizeof (buf), \
2596 "unhandled link kind %d", link->dest.kind); \
2597 str_v = caml_copy_string (buf); \
2598 ret_v = caml_alloc_small (1, uunexpected); \
2599 Field (ret_v, 0) = str_v; \
2600 } \
2601 break; \
2602 } \
2603 }
2604
2605 CAMLprim value ml_getlink (value ptr_v, value n_v)
2606 {
2607 CAMLparam2 (ptr_v, n_v);
2608 CAMLlocal3 (ret_v, tup_v, str_v);
2609 fz_link *link;
2610 struct page *page;
2611 struct pagedim *pdim;
2612 char *s = String_val (ptr_v);
2613
2614 ret_v = Val_int (0);
2615 if (trylock ("ml_getlink")) {
2616 goto done;
2617 }
2618
2619 page = parse_pointer ("ml_getlink", s);
2620 ensureslinks (page);
2621 pdim = &state.pagedims[page->pdimno];
2622 link = page->slinks[Int_val (n_v)].link;
2623 LINKTOVAL;
2624
2625 unlock ("ml_getlink");
2626 done:
2627 CAMLreturn (ret_v);
2628 }
2629
2630 CAMLprim value ml_getlinkcount (value ptr_v)
2631 {
2632 CAMLparam1 (ptr_v);
2633 struct page *page;
2634 char *s = String_val (ptr_v);
2635
2636 page = parse_pointer ("ml_getlinkcount", s);
2637 CAMLreturn (Val_int (page->slinkcount));
2638 }
2639
2640 CAMLprim value ml_getlinkrect (value ptr_v, value n_v)
2641 {
2642 CAMLparam2 (ptr_v, n_v);
2643 CAMLlocal1 (ret_v);
2644 struct page *page;
2645 struct slink *slink;
2646 char *s = String_val (ptr_v);
2647
2648 page = parse_pointer ("ml_getlinkrect", s);
2649 ret_v = caml_alloc_tuple (4);
2650 if (trylock ("ml_getlinkrect")) {
2651 Field (ret_v, 0) = Val_int (0);
2652 Field (ret_v, 1) = Val_int (0);
2653 Field (ret_v, 2) = Val_int (0);
2654 Field (ret_v, 3) = Val_int (0);
2655 goto done;
2656 }
2657 ensureslinks (page);
2658
2659 slink = &page->slinks[Int_val (n_v)];
2660 Field (ret_v, 0) = Val_int (slink->bbox.x0);
2661 Field (ret_v, 1) = Val_int (slink->bbox.y0);
2662 Field (ret_v, 2) = Val_int (slink->bbox.x1);
2663 Field (ret_v, 3) = Val_int (slink->bbox.y1);
2664 unlock ("ml_getlinkrect");
2665
2666 done:
2667 CAMLreturn (ret_v);
2668 }
2669
2670 CAMLprim value ml_whatsunder (value ptr_v, value x_v, value y_v)
2671 {
2672 CAMLparam3 (ptr_v, x_v, y_v);
2673 CAMLlocal3 (ret_v, tup_v, str_v);
2674 fz_link *link;
2675 struct page *page;
2676 char *s = String_val (ptr_v);
2677 int x = Int_val (x_v), y = Int_val (y_v);
2678 struct pagedim *pdim;
2679
2680 ret_v = Val_int (0);
2681 if (trylock ("ml_whatsunder")) {
2682 goto done;
2683 }
2684
2685 page = parse_pointer ("ml_whatsunder", s);
2686 pdim = &state.pagedims[page->pdimno];
2687 x += pdim->bounds.x0;
2688 y += pdim->bounds.y0;
2689 link = getlink (page, x, y);
2690 if (link) {
2691 LINKTOVAL;
2692 }
2693 else {
2694 fz_rect *b;
2695 fz_text_block *block;
2696
2697 ensuretext (page);
2698 for (block = page->text->blocks;
2699 block < page->text->blocks + page->text->len;
2700 ++block) {
2701 fz_text_line *line;
2702
2703 b = &block->bbox;
2704 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2705 continue;
2706
2707 for (line = block->lines;
2708 line < block->lines + block->len;
2709 ++line) {
2710 fz_text_span *span;
2711
2712 b = &line->bbox;
2713 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2714 continue;
2715
2716 for (span = line->spans;
2717 span < line->spans + line->len;
2718 ++span) {
2719 fz_text_char *ch;
2720
2721 b = &span->bbox;
2722 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2723 continue;
2724
2725 for (ch = span->text; ch < span->text + span->len; ++ch) {
2726 b = &ch->bbox;
2727
2728 if (x >= b->x0 && x <= b->x1
2729 && y >= b->y0 && y <= b->y1) {
2730 const char *n2 =
2731 span->style->font && span->style->font->name
2732 ? span->style->font->name
2733 : "Span has no font name"
2734 ;
2735 FT_FaceRec *face = span->style->font->ft_face;
2736 if (face && face->family_name) {
2737 char *s;
2738 char *n1 = face->family_name;
2739 size_t l1 = strlen (n1);
2740 size_t l2 = strlen (n2);
2741
2742 if (l1 != l2 || memcmp (n1, n2, l1)) {
2743 s = malloc (l1 + l2 + 2);
2744 if (s) {
2745 memcpy (s, n2, l2);
2746 s[l2] = '=';
2747 memcpy (s + l2 + 1, n1, l1 + 1);
2748 str_v = caml_copy_string (s);
2749 free (s);
2750 }
2751 }
2752 }
2753 if (str_v == 0) {
2754 str_v = caml_copy_string (n2);
2755 }
2756 ret_v = caml_alloc_small (1, utext);
2757 Field (ret_v, 0) = str_v;
2758 goto unlock;
2759 }
2760 }
2761 }
2762 }
2763 }
2764 }
2765 unlock:
2766 unlock ("ml_whatsunder");
2767
2768 done:
2769 CAMLreturn (ret_v);
2770 }
2771
2772 CAMLprim value ml_seltext (value ptr_v, value rect_v)
2773 {
2774 CAMLparam2 (ptr_v, rect_v);
2775 fz_rect *b;
2776 struct page *page;
2777 struct pagedim *pdim;
2778 int i, x0, x1, y0, y1;
2779 char *s = String_val (ptr_v);
2780 int fi = 0, li = 0;
2781 fz_text_block *block;
2782 fz_text_span *span, *fspan, *lspan;
2783 fz_text_line *line, *fline = NULL, *lline = NULL;
2784
2785 if (trylock ("ml_seltext")) {
2786 goto done;
2787 }
2788
2789 page = parse_pointer ("ml_seltext", s);
2790 ensuretext (page);
2791
2792 pdim = &state.pagedims[page->pdimno];
2793 x0 = Int_val (Field (rect_v, 0)) + pdim->bounds.x0;;
2794 y0 = Int_val (Field (rect_v, 1)) + pdim->bounds.y0;
2795 x1 = Int_val (Field (rect_v, 2)) + pdim->bounds.x0;
2796 y1 = Int_val (Field (rect_v, 3)) + pdim->bounds.y0;
2797
2798 if (0) {
2799 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
2800 glColor3ub (128, 128, 128);
2801 glRecti (x0, y0, x1, y1);
2802 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
2803 }
2804
2805 fspan = lspan = NULL;
2806
2807 for (block = page->text->blocks;
2808 block < page->text->blocks + page->text->len;
2809 ++block) {
2810 for (line = block->lines;
2811 line < block->lines + block->len;
2812 ++line) {
2813 for (span = line->spans;
2814 span < line->spans + line->len;
2815 ++span) {
2816 for (i = 0; i < span->len; ++i) {
2817 b = &span->text[i].bbox;
2818 int selected = 0;
2819
2820 if (x0 >= b->x0 && x0 <= b->x1
2821 && y0 >= b->y0 && y0 <= b->y1) {
2822 fspan = span;
2823 fline = line;
2824 fi = i;
2825 selected = 1;
2826 }
2827 if (x1 >= b->x0 && x1 <= b->x1
2828 && y1 >= b->y0 && y1 <= b->y1) {
2829 lspan = span;
2830 lline = line;
2831 li = i;
2832 selected = 1;
2833 }
2834 if (0 && selected) {
2835 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
2836 glColor3ub (128, 128, 128);
2837 glRecti (b->x0, b->y0, b->x1, b->y1);
2838 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
2839 }
2840 }
2841 }
2842 }
2843 }
2844 if (y1 < y0 || x1 < x0) {
2845 int swap = 0;
2846
2847 if (fspan == lspan) {
2848 swap = 1;
2849 }
2850 else {
2851 if (y1 < y0) {
2852 if (fline != lline) {
2853 swap = 1;
2854 }
2855 }
2856 }
2857
2858 if (swap) {
2859 i = fi;
2860 span = fspan;
2861
2862 fi = li;
2863 fspan = lspan;
2864
2865 li = i;
2866 lspan = span;
2867 }
2868 }
2869
2870 page->fmark.i = fi;
2871 page->fmark.span = fspan;
2872
2873 page->lmark.i = li;
2874 page->lmark.span = lspan;
2875
2876 unlock ("ml_seltext");
2877
2878 done:
2879 CAMLreturn (Val_unit);
2880 }
2881
2882 static int UNUSED_ATTR pipespan (FILE *f, fz_text_span *span, int a, int b)
2883 {
2884 char buf[4];
2885 int i, len, ret;
2886
2887 for (i = a; i <= b; ++i) {
2888 len = fz_runetochar (buf, span->text[i].c);
2889 ret = fwrite (buf, len, 1, f);
2890
2891 if (ret != 1) {
2892 fprintf (stderr, "failed to write %d bytes ret=%d: %s\n",
2893 len, ret, strerror (errno));
2894 return -1;
2895 }
2896 }
2897 return 0;
2898 }
2899
2900 #ifdef __CYGWIN__
2901 value ml_popen (value UNUSED_ATTR u1, value UNUSED_ATTR u2)
2902 {
2903 caml_failwith ("ml_popen not implemented under Cygwin");
2904 }
2905 #else
2906 CAMLprim value ml_popen (value command_v, value fds_v)
2907 {
2908 CAMLparam2 (command_v, fds_v);
2909 CAMLlocal2 (l_v, tup_v);
2910 int ret;
2911 char *msg = NULL;
2912 value earg_v = Nothing;
2913 posix_spawnattr_t attr;
2914 posix_spawn_file_actions_t fa;
2915 char *argv[] = { "/bin/sh", "-c", String_val (command_v), NULL };
2916
2917 if ((ret = posix_spawn_file_actions_init (&fa)) != 0) {
2918 unix_error (ret, "posix_spawn_file_actions_init", Nothing);
2919 }
2920
2921 if ((ret = posix_spawnattr_init (&attr)) != 0) {
2922 msg = "posix_spawnattr_init";
2923 goto fail1;
2924 }
2925
2926 #ifdef POSIX_SPAWN_USEVFORK
2927 if ((ret = posix_spawnattr_setflags (&attr, POSIX_SPAWN_USEVFORK)) != 0) {
2928 msg = "posix_spawnattr_setflags POSIX_SPAWN_USEVFORK";
2929 goto fail;
2930 }
2931 #endif
2932
2933 for (l_v = fds_v; l_v != Val_int (0); l_v = Field (l_v, 1)) {
2934 int fd1, fd2;
2935
2936 tup_v = Field (l_v, 0);
2937 fd1 = Int_val (Field (tup_v, 0));
2938 fd2 = Int_val (Field (tup_v, 1));
2939 if (fd2 < 0) {
2940 if ((ret = posix_spawn_file_actions_addclose (&fa, fd1)) != 0) {
2941 msg = "posix_spawn_file_actions_addclose";
2942 earg_v = tup_v;
2943 goto fail;
2944 }
2945 }
2946 else {
2947 if ((ret = posix_spawn_file_actions_adddup2 (&fa, fd1, fd2)) != 0) {
2948 msg = "posix_spawn_file_actions_adddup2";
2949 earg_v = tup_v;
2950 goto fail;
2951 }
2952 }
2953 }
2954
2955 if ((ret = posix_spawn (NULL, "/bin/sh", &fa, &attr, argv, environ))) {
2956 msg = "posix_spawn";
2957 goto fail;
2958 }
2959
2960 fail:
2961 if ((ret = posix_spawnattr_destroy (&attr)) != 0) {
2962 fprintf (stderr, "posix_spawnattr_destroy: %s\n", strerror (ret));
2963 }
2964
2965 fail1:
2966 if ((ret = posix_spawn_file_actions_destroy (&fa)) != 0) {
2967 fprintf (stderr, "posix_spawn_file_actions_destroy: %s\n",
2968 strerror (ret));
2969 }
2970
2971 if (msg)
2972 unix_error (ret, msg, earg_v);
2973
2974 CAMLreturn (Val_unit);
2975 }
2976 #endif
2977
2978 CAMLprim value ml_copysel (value fd_v, value ptr_v)
2979 {
2980 CAMLparam1 (ptr_v);
2981 FILE *f;
2982 int seen = 0;
2983 struct page *page;
2984 fz_text_line *line;
2985 fz_text_span *span;
2986 fz_text_block *block;
2987 int fd = Int_val (fd_v);
2988 char *s = String_val (ptr_v);
2989
2990 if (trylock ("ml_copysel")) {
2991 goto done;
2992 }
2993
2994 page = parse_pointer ("ml_sopysel", s);
2995
2996 if (!page->fmark.span || !page->lmark.span) {
2997 fprintf (stderr, "nothing to copy\n");
2998 goto unlock;
2999 }
3000
3001 f = fdopen (fd, "w");
3002 if (!f) {
3003 fprintf (stderr, "failed to fopen sel pipe: %s\n",
3004 strerror (errno));
3005 f = stdout;
3006 }
3007
3008 for (block = page->text->blocks;
3009 block < page->text->blocks + page->text->len;
3010 ++block) {
3011 for (line = block->lines;
3012 line < block->lines + block->len;
3013 ++line) {
3014 for (span = line->spans;
3015 span < line->spans + line->len;
3016 ++span) {
3017 int a, b;
3018
3019 seen |= span == page->fmark.span || span == page->lmark.span;
3020 a = span == page->fmark.span ? page->fmark.i : 0;
3021 b = span == page->lmark.span ? page->lmark.i : span->len - 1;
3022
3023 if (seen) {
3024 if (pipespan (f, span, a, b)) {
3025 goto close;
3026 }
3027 if (span == line->spans + line->len - 1) {
3028 if (putc ('\n', f) == EOF) {
3029 fprintf (stderr,
3030 "failed break line on sel pipe: %s\n",
3031 strerror (errno));
3032 goto close;
3033 }
3034 }
3035 if (span == page->lmark.span) {
3036 goto endloop;
3037 }
3038 }
3039 }
3040 }
3041 }
3042 endloop:
3043 page->lmark.span = NULL;
3044 page->fmark.span = NULL;
3045
3046 close:
3047 if (f != stdout) {
3048 int ret = fclose (f);
3049 fd = -1;
3050 if (ret == -1) {
3051 if (errno != ECHILD) {
3052 fprintf (stderr, "failed to close sel pipe: %s\n",
3053 strerror (errno));
3054 }
3055 }
3056 }
3057 unlock:
3058 unlock ("ml_copysel");
3059
3060 done:
3061 if (fd >= 0) {
3062 if (close (fd)) {
3063 fprintf (stderr, "failed to close sel pipe: %s\n",
3064 strerror (errno));
3065 }
3066 }
3067 CAMLreturn (Val_unit);
3068 }
3069
3070 CAMLprim value ml_getpdimrect (value pagedimno_v)
3071 {
3072 CAMLparam1 (pagedimno_v);
3073 CAMLlocal1 (ret_v);
3074 int pagedimno = Int_val (pagedimno_v);
3075 fz_rect box;
3076
3077 ret_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3078 if (trylock ("ml_getpdimrect")) {
3079 box = fz_empty_rect;
3080 }
3081 else {
3082 box = state.pagedims[pagedimno].mediabox;
3083 unlock ("ml_getpdimrect");
3084 }
3085
3086 Store_double_field (ret_v, 0, box.x0);
3087 Store_double_field (ret_v, 1, box.x1);
3088 Store_double_field (ret_v, 2, box.y0);
3089 Store_double_field (ret_v, 3, box.y1);
3090
3091 CAMLreturn (ret_v);
3092 }
3093
3094 static double getmaxw (void)
3095 {
3096 int i;
3097 struct pagedim *p;
3098 double maxw = 0.0;
3099
3100 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3101 double x0, x1, w;
3102
3103 x0 = MIN (p->mediabox.x0, p->mediabox.x1);
3104 x1 = MAX (p->mediabox.x0, p->mediabox.x1);
3105
3106 w = x1 - x0;
3107 maxw = MAX (w, maxw);
3108 }
3109 return maxw;
3110 }
3111
3112 CAMLprim value ml_getmaxw (value unit_v)
3113 {
3114 CAMLparam1 (unit_v);
3115 CAMLlocal1 (ret_v);
3116 double maxw = 0.0;
3117
3118 if (trylock ("ml_getmaxw")) {
3119 goto done;
3120 }
3121 maxw = getmaxw ();
3122 unlock ("ml_getmaxw");
3123 done:
3124 ret_v = caml_copy_double (maxw);
3125 CAMLreturn (ret_v);
3126 }
3127
3128 CAMLprim value ml_zoom_for_height (value winw_v, value winh_v,
3129 value dw_v, value cols_v)
3130 {
3131 CAMLparam3 (winw_v, winh_v, dw_v);
3132 CAMLlocal1 (ret_v);
3133 int i;
3134 double zoom = 1.0;
3135 double maxw = 0.0, maxh = 0.0;
3136 struct pagedim *p;
3137 double winw = Int_val (winw_v);
3138 double winh = Int_val (winh_v);
3139 double dw = Int_val (dw_v);
3140 double cols = Int_val (cols_v);
3141 double pw = 1.0, ph = 1.0, aspect;
3142
3143 if (trylock ("ml_zoom_for_height")) {
3144 goto done;
3145 }
3146
3147 if (state.proportional) {
3148 maxw = getmaxw () / cols;
3149 }
3150
3151 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3152 double x0, x1, y0, y1, w, h, scaledh, scale;
3153 fz_rect rect;
3154
3155 rect = fz_transform_rect (fz_rotate (p->rotate + state.rotate),
3156 p->mediabox);
3157 x0 = MIN (rect.x0, rect.x1);
3158 x1 = MAX (rect.x0, rect.x1);
3159 y0 = MIN (rect.y0, rect.y1);
3160 y1 = MAX (rect.y0, rect.y1);
3161
3162 w = (x1 - x0) / cols;
3163 h = y1 - y0;
3164
3165 if (state.proportional) {
3166 scale = w / maxw;
3167 scaledh = h * scale;
3168 }
3169 else {
3170 scale = 1.0;
3171 scaledh = h;
3172 }
3173
3174 if (scaledh > maxh) {
3175 maxh = scaledh;
3176 ph = scaledh;
3177 pw = w * scale;
3178 }
3179 }
3180
3181 aspect = pw / ph;
3182 zoom = (winh * aspect + dw) / winw;
3183
3184 unlock ("ml_zoom_for_height");
3185 done:
3186 ret_v = caml_copy_double (zoom);
3187 CAMLreturn (ret_v);
3188 }
3189
3190 CAMLprim value ml_draw_string (value pt_v, value x_v, value y_v, value string_v)
3191 {
3192 CAMLparam4 (pt_v, x_v, y_v, string_v);
3193 CAMLlocal1 (ret_v);
3194 int pt = Int_val(pt_v);
3195 int x = Int_val (x_v);
3196 int y = Int_val (y_v);
3197 double w;
3198
3199 w = draw_string (state.face, pt, x, y, String_val (string_v));
3200 ret_v = caml_copy_double (w);
3201 CAMLreturn (ret_v);
3202 }
3203
3204 CAMLprim value ml_measure_string (value pt_v, value string_v)
3205 {
3206 CAMLparam2 (pt_v, string_v);
3207 CAMLlocal1 (ret_v);
3208 int pt = Int_val (pt_v);
3209 double w;
3210
3211 w = measure_string (state.face, pt, String_val (string_v));
3212 ret_v = caml_copy_double (w);
3213 CAMLreturn (ret_v);
3214 }
3215
3216 CAMLprim value ml_getpagebox (value opaque_v)
3217 {
3218 CAMLparam1 (opaque_v);
3219 CAMLlocal1 (ret_v);
3220 fz_bbox bbox;
3221 fz_device *dev;
3222 char *s = String_val (opaque_v);
3223 struct page *page = parse_pointer ("ml_getpagebox", s);
3224
3225 ret_v = caml_alloc_tuple (4);
3226 dev = fz_new_bbox_device (state.ctx, &bbox);
3227 dev->hints |= FZ_IGNORE_SHADE;
3228
3229 switch (page->type) {
3230 case DPDF:
3231 pdf_run_page (state.u.pdf, page->u.pdfpage, dev, pagectm (page), NULL);
3232 break;
3233
3234 case DXPS:
3235 xps_run_page (state.u.xps, page->u.xpspage, dev, pagectm (page), NULL);
3236 break;
3237
3238 default:
3239 bbox = fz_infinite_bbox;
3240 break;
3241 }
3242
3243 fz_free_device (dev);
3244 Field (ret_v, 0) = Val_int (bbox.x0);
3245 Field (ret_v, 1) = Val_int (bbox.y0);
3246 Field (ret_v, 2) = Val_int (bbox.x1);
3247 Field (ret_v, 3) = Val_int (bbox.y1);
3248
3249 CAMLreturn (ret_v);
3250 }
3251
3252 CAMLprim value ml_setaalevel (value level_v)
3253 {
3254 CAMLparam1 (level_v);
3255
3256 state.aalevel = Int_val (level_v);
3257 CAMLreturn (Val_unit);
3258 }
3259
3260 #undef pixel
3261 #include <X11/Xlib.h>
3262 #include <GL/glx.h>
3263
3264 static struct {
3265 Display *dpy;
3266 GLXContext ctx;
3267 GLXDrawable drawable;
3268 } glx;
3269
3270 #include "keysym2ucs.c"
3271
3272 CAMLprim value ml_keysymtoutf8 (value keysym_v)
3273 {
3274 CAMLparam1 (keysym_v);
3275 CAMLlocal1 (str_v);
3276 KeySym keysym = Int_val (keysym_v);
3277 Rune rune;
3278 int len;
3279 char buf[5];
3280
3281 rune = keysym2ucs (keysym);
3282 len = fz_runetochar (buf, rune);
3283 buf[len] = 0;
3284 str_v = caml_copy_string (buf);
3285 CAMLreturn (str_v);
3286 }
3287
3288 CAMLprim value ml_glx (value win_v)
3289 {
3290 CAMLparam1 (win_v);
3291 XVisualInfo *visual;
3292 int screen, wid = Int_val (win_v);
3293 int attributes[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
3294
3295 glx.dpy = XOpenDisplay (NULL);
3296 if (!glx.dpy) {
3297 caml_failwith ("XOpenDisplay");
3298 }
3299
3300 screen = DefaultScreen (glx.dpy);
3301 visual = glXChooseVisual (glx.dpy, screen, attributes);
3302 if (!visual) {
3303 XCloseDisplay (glx.dpy);
3304 glx.dpy = NULL;
3305 caml_failwith ("glXChooseVisual");
3306 }
3307
3308 glx.ctx = glXCreateContext (glx.dpy, visual, NULL, True);
3309 XFree (visual);
3310 if (!glx.ctx) {
3311 XCloseDisplay (glx.dpy);
3312 glx.dpy = NULL;
3313 caml_failwith ("glXCreateContext");
3314 }
3315
3316 if (!glXMakeCurrent (glx.dpy, wid, glx.ctx)) {
3317 glXDestroyContext (glx.dpy, glx.ctx);
3318 XCloseDisplay (glx.dpy);
3319 glx.dpy = NULL;
3320 glx.ctx = NULL;
3321 caml_failwith ("glXMakeCurrent");
3322 }
3323 glx.drawable = wid;
3324 CAMLreturn (Val_unit);
3325 }
3326
3327 CAMLprim value ml_swapb (value unit_v)
3328 {
3329 CAMLparam1 (unit_v);
3330 glXSwapBuffers (glx.dpy, glx.drawable);
3331 CAMLreturn (Val_unit);
3332 }
3333
3334 CAMLprim value ml_glxsync (value unit_v)
3335 {
3336 CAMLparam1 (unit_v);
3337 if (glx.dpy && glx.ctx) {
3338 glXWaitX ();
3339 glXWaitGL ();
3340 }
3341 CAMLreturn (Val_unit);
3342 }
3343
3344 enum { piunknown, pilinux, piosx, pisun, pifreebsd,
3345 pidragonflybsd, piopenbsd, pinetbsd, picygwin };
3346
3347 CAMLprim value ml_platform (value unit_v)
3348 {
3349 CAMLparam1 (unit_v);
3350 int platid = piunknown;
3351
3352 #if defined __linux__
3353 platid = pilinux;
3354 #elif defined __CYGWIN__
3355 platid = picygwin;
3356 #elif defined __DragonFly__
3357 platid = pidragonflybsd;
3358 #elif defined __FreeBSD__
3359 platid = pifreebsd;
3360 #elif defined __OpenBSD__
3361 platid = piopenbsd;
3362 #elif defined __NetBSD__
3363 platid = pinetbsd;
3364 #elif defined __sun__
3365 platid = pisun;
3366 #elif defined __APPLE__
3367 platid = piosx;
3368 #endif
3369 CAMLreturn (Val_int (platid));
3370 }
3371
3372 CAMLprim value ml_cloexec (value fd_v)
3373 {
3374 CAMLparam1 (fd_v);
3375 int fd = Int_val (fd_v);
3376
3377 if (fcntl (fd, F_SETFD, FD_CLOEXEC, 1)) {
3378 uerror ("fcntl", Nothing);
3379 }
3380 CAMLreturn (Val_unit);
3381 }
3382
3383 CAMLprim value ml_getpbo (value w_v, value h_v, value cs_v)
3384 {
3385 CAMLparam2 (w_v, h_v);
3386 CAMLlocal1 (ret_v);
3387 struct pbo *pbo;
3388 int w = Int_val (w_v);
3389 int h = Int_val (h_v);
3390 int cs = Int_val (cs_v);
3391
3392 if (state.pbo_usable) {
3393 pbo = calloc (sizeof (*pbo), 1);
3394 if (!pbo) {
3395 err (1, "calloc pbo");
3396 }
3397
3398 switch (cs) {
3399 case 0:
3400 case 1:
3401 pbo->size = w*h*4;
3402 break;
3403 case 2:
3404 pbo->size = w*h*2;
3405 break;
3406 default:
3407 errx (1, "ml_getpbo: invalid colorspace %d", cs);
3408 }
3409
3410 state.glGenBuffersARB (1, &pbo->id);
3411 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->id);
3412 state.glBufferDataARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->size,
3413 NULL, GL_STREAM_DRAW);
3414 pbo->ptr = state.glMapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB,
3415 GL_READ_WRITE);
3416 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3417 if (!pbo->ptr) {
3418 fprintf (stderr, "glMapBufferARB failed: %#x\n", glGetError ());
3419 state.glDeleteBuffersARB (1, &pbo->id);
3420 free (pbo);
3421 ret_v = caml_copy_string ("0");
3422 }
3423 else {
3424 int res;
3425 char *s;
3426
3427 res = snprintf (NULL, 0, "%" FMT_ptr, pbo);
3428 if (res < 0) {
3429 err (1, "snprintf %" FMT_ptr " failed", pbo);
3430 }
3431 s = malloc (res+1);
3432 if (!s) {
3433 err (1, "malloc %d bytes failed", res+1);
3434 }
3435 res = sprintf (s, "%" FMT_ptr, pbo);
3436 if (res < 0) {
3437 err (1, "sprintf %" FMT_ptr " failed", pbo);
3438 }
3439 ret_v = caml_copy_string (s);
3440 free (s);
3441 }
3442 }
3443 else {
3444 ret_v = caml_copy_string ("0");
3445 }
3446 CAMLreturn (ret_v);
3447 }
3448
3449 CAMLprim value ml_freepbo (value s_v)
3450 {
3451 CAMLparam1 (s_v);
3452 char *s = String_val (s_v);
3453 struct tile *tile = parse_pointer ("ml_freepbo", s);
3454
3455 if (tile->pbo) {
3456 state.glDeleteBuffersARB (1, &tile->pbo->id);
3457 tile->pbo->id = -1;
3458 tile->pbo->ptr = NULL;
3459 tile->pbo->size = -1;
3460 }
3461 CAMLreturn (Val_unit);
3462 }
3463
3464 CAMLprim value ml_unmappbo (value s_v)
3465 {
3466 CAMLparam1 (s_v);
3467 char *s = String_val (s_v);
3468 struct tile *tile = parse_pointer ("ml_unmappbo", s);
3469
3470 if (tile->pbo) {
3471 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
3472 if (state.glUnmapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB) == GL_FALSE) {
3473 errx (1, "glUnmapBufferARB failed: %#x\n", glGetError ());
3474 }
3475 tile->pbo->ptr = NULL;
3476 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3477 }
3478 CAMLreturn (Val_unit);
3479 }
3480
3481 static void setuppbo (void)
3482 {
3483 #define GGPA(n) *(void (**) ()) &state.n = glXGetProcAddress ((GLubyte *) #n)
3484 GGPA (glBindBufferARB);
3485 if (state.glBindBufferARB) {
3486 GGPA (glUnmapBufferARB);
3487 if (state.glUnmapBufferARB) {
3488 GGPA (glMapBufferARB);
3489 if (state.glMapBufferARB) {
3490 GGPA (glBufferDataARB);
3491 if (state.glBufferDataARB) {
3492 GGPA (glGenBuffersARB);
3493 if (state.glGenBuffersARB) {
3494 GGPA (glDeleteBuffersARB);
3495 if (state.glDeleteBuffersARB) {
3496 state.pbo_usable = 1;
3497 }
3498 }
3499 }
3500 }
3501 }
3502 }
3503 #undef GGPA
3504 }
3505
3506 CAMLprim value ml_pbo_usable (value unit_v)
3507 {
3508 CAMLparam1 (unit_v);
3509 CAMLreturn (Val_bool (state.pbo_usable));
3510 }
3511
3512 CAMLprim value ml_init (value pipe_v, value params_v)
3513 {
3514 CAMLparam2 (pipe_v, params_v);
3515 CAMLlocal2 (trim_v, fuzz_v);
3516 int ret;
3517 int texcount;
3518 char *fontpath;
3519 int colorspace;
3520 int mustoresize;
3521 int haspboext;
3522 struct sigaction sa;
3523
3524 state.cr = Int_val (Field (pipe_v, 0));
3525 state.cw = Int_val (Field (pipe_v, 1));
3526 state.rotate = Int_val (Field (params_v, 0));
3527 state.proportional = Bool_val (Field (params_v, 1));
3528 trim_v = Field (params_v, 2);
3529 texcount = Int_val (Field (params_v, 3));
3530 state.sliceheight = Int_val (Field (params_v, 4));
3531 mustoresize = Int_val (Field (params_v, 5));
3532 colorspace = Int_val (Field (params_v, 6));
3533 fontpath = String_val (Field (params_v, 7));
3534 state.trimcachepath = strdup (String_val (Field (params_v, 8)));
3535 if (!state.trimcachepath) {
3536 fprintf (stderr, "failed to strdup trimcachepath: %s\n",
3537 strerror (errno));
3538 }
3539 haspboext = Bool_val (Field (params_v, 9));
3540
3541 state.ctx = fz_new_context (NULL, NULL, mustoresize);
3542
3543 state.trimmargins = Bool_val (Field (trim_v, 0));
3544 fuzz_v = Field (trim_v, 1);
3545 state.trimfuzz.x0 = Int_val (Field (fuzz_v, 0));
3546 state.trimfuzz.y0 = Int_val (Field (fuzz_v, 1));
3547 state.trimfuzz.x1 = Int_val (Field (fuzz_v, 2));
3548 state.trimfuzz.y1 = Int_val (Field (fuzz_v, 3));
3549
3550 set_tex_params (colorspace);
3551
3552 if (*fontpath) {
3553 state.face = load_font (fontpath);
3554 }
3555 else {
3556 unsigned int len;
3557 void *base = pdf_lookup_substitute_font (0, 0, 0, 0, &len);
3558
3559 state.face = load_builtin_font (base, len);
3560 }
3561 if (!state.face) _exit (1);
3562
3563 realloctexts (texcount);
3564
3565 if (haspboext) {
3566 setuppbo ();
3567 }
3568
3569 #ifdef __CYGWIN__
3570 sa.sa_handler = SIG_IGN;
3571 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
3572 #else
3573 sa.sa_handler = SIG_DFL;
3574 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP | SA_NOCLDWAIT;
3575 #endif
3576 if (sigemptyset (&sa.sa_mask)) {
3577 err (1, "sigemptyset");
3578 }
3579 if (sigaction (SIGCHLD, &sa, NULL)) {
3580 err (1, "sigaction");
3581 }
3582
3583 ret = pthread_create (&state.thread, NULL, mainloop, NULL);
3584 if (ret) {
3585 errx (1, "pthread_create: %s", strerror (ret));
3586 }
3587
3588 CAMLreturn (Val_unit);
3589 }
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