static void removeduplicateobjs(void)
{
int num, other;
for (num = 1; num < xref->len; num++)
{
/* Only compare an object to objects preceding it */
for (other = 1; other < num; other++)
{
fz_obj *a, *b;
if (num == other || !uselist[num] || !uselist[other])
continue;
/*
* Comparing stream objects data contents would take too long.
*
* pdf_is_stream calls pdf_cache_object and ensures
* that the xref table has the objects loaded.
*/
fz_try(ctx)
{
if (pdf_is_stream(xref, num, 0) || pdf_is_stream(xref, other, 0))
continue;
}
fz_catch(ctx)
{
/* Assume different */
}
a = xref->table[num].obj;
b = xref->table[other].obj;
a = fz_resolve_indirect(a);
b = fz_resolve_indirect(b);
if (fz_objcmp(a, b))
continue;
/* Keep the lowest numbered object */
renumbermap[num] = MIN(num, other);
renumbermap[other] = MIN(num, other);
uselist[MAX(num, other)] = 0;
/* One duplicate was found, do not look for another */
break;
}
}
}
static fz_obj *
pdf_get_ap_stream(pdf_xref *xref, fz_obj *obj)
{
fz_obj *ap = fz_dict_gets(xref->ctx, obj, "AP");
if (!fz_is_dict(xref->ctx, ap))
return NULL;
ap = fz_dict_gets(xref->ctx, ap, "N");
if (!pdf_is_stream(xref, fz_to_num(ap), fz_to_gen(ap)))
ap = fz_dict_get(xref->ctx, ap, fz_dict_gets(xref->ctx, obj, "AS"));
if (!pdf_is_stream(xref, fz_to_num(ap), fz_to_gen(ap)))
return NULL;
return ap;
}
static void sweepref(fz_obj *obj)
{
int num = fz_to_num(obj);
int gen = fz_to_gen(obj);
if (num < 0 || num >= xref->len)
return;
if (uselist[num])
return;
uselist[num] = 1;
/* Bake in /Length in stream objects */
fz_try(ctx)
{
if (pdf_is_stream(xref, num, gen))
{
fz_obj *len = fz_dict_gets(obj, "Length");
if (fz_is_indirect(len))
{
uselist[fz_to_num(len)] = 0;
len = fz_resolve_indirect(len);
fz_dict_puts(obj, "Length", len);
}
}
}
fz_catch(ctx)
{
/* Leave broken */
}
sweepobj(fz_resolve_indirect(obj));
}
void
pdf_update_annot(pdf_document *doc, pdf_annot *annot)
{
/* SumatraPDF: prevent regressions */
#if 0
pdf_obj *obj, *ap, *as, *n;
fz_context *ctx = doc->ctx;
if (doc->update_appearance)
doc->update_appearance(doc, annot);
obj = annot->obj;
ap = pdf_dict_gets(obj, "AP");
as = pdf_dict_gets(obj, "AS");
if (pdf_is_dict(ap))
{
pdf_hotspot *hp = &doc->hotspot;
n = NULL;
if (hp->num == pdf_to_num(obj)
&& hp->gen == pdf_to_gen(obj)
&& (hp->state & HOTSPOT_POINTER_DOWN))
{
n = pdf_dict_gets(ap, "D"); /* down state */
}
if (n == NULL)
n = pdf_dict_gets(ap, "N"); /* normal state */
/* lookup current state in sub-dictionary */
if (!pdf_is_stream(doc, pdf_to_num(n), pdf_to_gen(n)))
n = pdf_dict_get(n, as);
pdf_drop_xobject(ctx, annot->ap);
annot->ap = NULL;
if (pdf_is_stream(doc, pdf_to_num(n), pdf_to_gen(n)))
{
fz_try(ctx)
{
annot->ap = pdf_load_xobject(doc, n);
pdf_transform_annot(annot);
annot->ap_iteration = annot->ap->iteration;
}
fz_catch(ctx)
{
fz_rethrow_if(ctx, FZ_ERROR_TRYLATER);
fz_warn(ctx, "ignoring broken annotation");
}
}
}
#endif
}
void
pdf_update_annot(fz_context *ctx, pdf_document *doc, pdf_annot *annot)
{
pdf_obj *obj, *ap, *as, *n;
if (doc->update_appearance)
doc->update_appearance(ctx, doc, annot);
obj = annot->obj;
ap = pdf_dict_get(ctx, obj, PDF_NAME_AP);
as = pdf_dict_get(ctx, obj, PDF_NAME_AS);
if (pdf_is_dict(ctx, ap))
{
pdf_hotspot *hp = &doc->hotspot;
n = NULL;
if (hp->num == pdf_to_num(ctx, obj)
&& hp->gen == pdf_to_gen(ctx, obj)
&& (hp->state & HOTSPOT_POINTER_DOWN))
{
n = pdf_dict_get(ctx, ap, PDF_NAME_D); /* down state */
}
if (n == NULL)
n = pdf_dict_get(ctx, ap, PDF_NAME_N); /* normal state */
/* lookup current state in sub-dictionary */
if (!pdf_is_stream(ctx, doc, pdf_to_num(ctx, n), pdf_to_gen(ctx, n)))
n = pdf_dict_get(ctx, n, as);
pdf_drop_xobject(ctx, annot->ap);
annot->ap = NULL;
if (pdf_is_stream(ctx, doc, pdf_to_num(ctx, n), pdf_to_gen(ctx, n)))
{
fz_try(ctx)
{
annot->ap = pdf_load_xobject(ctx, doc, n);
pdf_transform_annot(ctx, annot);
annot->ap_iteration = annot->ap->iteration;
}
fz_catch(ctx)
{
fz_rethrow_if(ctx, FZ_ERROR_TRYLATER);
fz_warn(ctx, "ignoring broken annotation");
}
}
}
}
fz_stream *
pdf_open_contents_stream(fz_context *ctx, pdf_document *doc, pdf_obj *obj)
{
int num;
if (pdf_is_array(ctx, obj))
return pdf_open_object_array(ctx, doc, obj);
num = pdf_to_num(ctx, obj);
if (pdf_is_stream(ctx, obj))
return pdf_open_image_stream(ctx, doc, num, NULL);
fz_throw(ctx, FZ_ERROR_GENERIC, "pdf object stream missing (%d 0 R)", num);
}
fz_stream *
pdf_open_contents_stream(pdf_document *xref, pdf_obj *obj)
{
fz_context *ctx = xref->ctx;
int num, gen;
if (pdf_is_array(obj))
return pdf_open_object_array(xref, obj);
num = pdf_to_num(obj);
gen = pdf_to_gen(obj);
if (pdf_is_stream(xref, num, gen))
return pdf_open_image_stream(xref, num, gen, num, gen, NULL);
fz_warn(ctx, "pdf object stream missing (%d %d R)", num, gen);
return NULL;
}
static void writeobject(int num, int gen)
{
fz_error error;
fz_obj *obj;
fz_obj *type;
error = pdf_load_object(&obj, xref, num, gen);
if (error)
die(error);
/* skip ObjStm and XRef objects */
if (fz_is_dict(ctx, obj))
{
type = fz_dict_gets(ctx, obj, "Type");
if (fz_is_name(ctx, type) && !strcmp(fz_to_name(ctx, type), "ObjStm"))
{
uselist[num] = 0;
fz_drop_obj(ctx, obj);
return;
}
if (fz_is_name(ctx, type) && !strcmp(fz_to_name(ctx, type), "XRef"))
{
uselist[num] = 0;
fz_drop_obj(ctx, obj);
return;
}
}
if (!pdf_is_stream(xref, num, gen))
{
fprintf(out, "%d %d obj\n", num, gen);
fz_fprint_obj(ctx, out, obj, !doexpand);
fprintf(out, "endobj\n\n");
}
else
{
if (doexpand && !pdf_is_jpx_image(ctx, obj))
expandstream(obj, num, gen);
else
copystream(obj, num, gen);
}
fz_drop_obj(ctx, obj);
}
static char *get_string_or_stream(pdf_document *doc, pdf_obj *obj)
{
fz_context *ctx = doc->ctx;
int len = 0;
char *buf = NULL;
fz_buffer *strmbuf = NULL;
char *text = NULL;
fz_var(strmbuf);
fz_var(text);
fz_try(ctx)
{
if (pdf_is_string(obj))
{
len = pdf_to_str_len(obj);
buf = pdf_to_str_buf(obj);
}
else if (pdf_is_stream(doc, pdf_to_num(obj), pdf_to_gen(obj)))
{
strmbuf = pdf_load_stream(doc, pdf_to_num(obj), pdf_to_gen(obj));
len = fz_buffer_storage(ctx, strmbuf, (unsigned char **)&buf);
}
if (buf)
{
text = fz_malloc(ctx, len+1);
memcpy(text, buf, len);
text[len] = 0;
}
}
fz_always(ctx)
{
fz_drop_buffer(ctx, strmbuf);
}
fz_catch(ctx)
{
fz_free(ctx, text);
fz_rethrow(ctx);
}
return text;
}
static int add_to_srcpage_stream(pdf_document *xref,fz_context *ctx,int pageref,int pagegen,
pdf_obj *srcdict)
{
fz_buffer *srcbuf;
fz_buffer *dstbuf;
int dstlen;
// printf("@add_to_srcpage_stream()...pageref=%d\n",pageref);
srcbuf=pdf_load_stream(xref,pdf_to_num(srcdict),pdf_to_gen(srcdict));
if (srcbuf==NULL)
{
dstbuf=pdf_load_stream(xref,pageref,pagegen);
if (dstbuf==NULL)
return(0);
dstlen=fz_buffer_storage(ctx,dstbuf,NULL);
fz_drop_buffer(ctx,dstbuf);
return(dstlen);
}
if (!pdf_is_stream(xref,pageref,pagegen))
dstbuf=fz_new_buffer(ctx,16);
else
{
dstbuf=pdf_load_stream(xref,pageref,pagegen);
if (dstbuf==NULL)
dstbuf=fz_new_buffer(ctx,16);
}
/* Concatenate srcbuf to dstbuf: (Will srcbuf->data be allowed?) */
dstlen=fz_buffer_storage(ctx,dstbuf,NULL);
/*
printf(" dstlen before = %d\n",dstlen);
printf(" srclen = %d\n",fz_buffer_storage(ctx,srcbuf,NULL));
printf(" srcptr = %p\n",srcbuf->data);
*/
fz_write_buffer(ctx,dstbuf,srcbuf->data,fz_buffer_storage(ctx,srcbuf,NULL));
dstlen=fz_buffer_storage(ctx,dstbuf,NULL);
// printf(" dstlen after = %d\n",dstlen);
fz_drop_buffer(ctx,srcbuf);
pdf_update_stream(xref,pageref,dstbuf);
fz_drop_buffer(ctx,dstbuf);
return(dstlen);
}
pdf_font_desc *
pdf_load_type3_font(fz_context *ctx, pdf_document *doc, pdf_obj *rdb, pdf_obj *dict)
{
char buf[256];
char *estrings[256];
pdf_font_desc *fontdesc = NULL;
pdf_obj *encoding;
pdf_obj *widths;
pdf_obj *charprocs;
pdf_obj *obj;
int first, last;
int i, k, n;
fz_rect bbox;
fz_matrix matrix;
fz_font *font;
fz_var(fontdesc);
/* Make a new type3 font entry in the document */
if (doc->num_type3_fonts == doc->max_type3_fonts)
{
int new_max = doc->max_type3_fonts * 2;
if (new_max == 0)
new_max = 4;
doc->type3_fonts = fz_resize_array(ctx, doc->type3_fonts, new_max, sizeof(*doc->type3_fonts));
doc->max_type3_fonts = new_max;
}
fz_try(ctx)
{
obj = pdf_dict_get(ctx, dict, PDF_NAME_Name);
if (pdf_is_name(ctx, obj))
fz_strlcpy(buf, pdf_to_name(ctx, obj), sizeof buf);
else
fz_strlcpy(buf, "Unnamed-T3", sizeof buf);
fontdesc = pdf_new_font_desc(ctx);
obj = pdf_dict_get(ctx, dict, PDF_NAME_FontMatrix);
pdf_to_matrix(ctx, obj, &matrix);
obj = pdf_dict_get(ctx, dict, PDF_NAME_FontBBox);
fz_transform_rect(pdf_to_rect(ctx, obj, &bbox), &matrix);
font = fz_new_type3_font(ctx, buf, &matrix);
fontdesc->font = font;
fontdesc->size += sizeof(fz_font) + 256 * (sizeof(fz_buffer*) + sizeof(float));
fz_set_font_bbox(ctx, font, bbox.x0, bbox.y0, bbox.x1, bbox.y1);
/* Encoding */
for (i = 0; i < 256; i++)
estrings[i] = NULL;
encoding = pdf_dict_get(ctx, dict, PDF_NAME_Encoding);
if (!encoding)
{
fz_throw(ctx, FZ_ERROR_GENERIC, "syntaxerror: Type3 font missing Encoding");
}
if (pdf_is_name(ctx, encoding))
pdf_load_encoding(estrings, pdf_to_name(ctx, encoding));
if (pdf_is_dict(ctx, encoding))
{
pdf_obj *base, *diff, *item;
base = pdf_dict_get(ctx, encoding, PDF_NAME_BaseEncoding);
if (pdf_is_name(ctx, base))
pdf_load_encoding(estrings, pdf_to_name(ctx, base));
diff = pdf_dict_get(ctx, encoding, PDF_NAME_Differences);
if (pdf_is_array(ctx, diff))
{
n = pdf_array_len(ctx, diff);
k = 0;
for (i = 0; i < n; i++)
{
item = pdf_array_get(ctx, diff, i);
if (pdf_is_int(ctx, item))
k = pdf_to_int(ctx, item);
if (pdf_is_name(ctx, item) && k >= 0 && k < nelem(estrings))
estrings[k++] = pdf_to_name(ctx, item);
}
}
}
fontdesc->encoding = pdf_new_identity_cmap(ctx, 0, 1);
fontdesc->size += pdf_cmap_size(ctx, fontdesc->encoding);
pdf_load_to_unicode(ctx, doc, fontdesc, estrings, NULL, pdf_dict_get(ctx, dict, PDF_NAME_ToUnicode));
/* Widths */
pdf_set_default_hmtx(ctx, fontdesc, 0);
first = pdf_to_int(ctx, pdf_dict_get(ctx, dict, PDF_NAME_FirstChar));
last = pdf_to_int(ctx, pdf_dict_get(ctx, dict, PDF_NAME_LastChar));
if (first < 0 || last > 255 || first > last)
first = last = 0;
widths = pdf_dict_get(ctx, dict, PDF_NAME_Widths);
if (!widths)
{
fz_throw(ctx, FZ_ERROR_GENERIC, "syntaxerror: Type3 font missing Widths");
}
for (i = first; i <= last; i++)
{
float w = pdf_to_real(ctx, pdf_array_get(ctx, widths, i - first));
w = font->t3matrix.a * w * 1000;
font->t3widths[i] = w * 0.001f;
pdf_add_hmtx(ctx, fontdesc, i, i, w);
}
pdf_end_hmtx(ctx, fontdesc);
/* Resources -- inherit page resources if the font doesn't have its own */
font->t3freeres = pdf_t3_free_resources;
font->t3resources = pdf_dict_get(ctx, dict, PDF_NAME_Resources);
if (!font->t3resources)
font->t3resources = rdb;
if (font->t3resources)
pdf_keep_obj(ctx, font->t3resources);
if (!font->t3resources)
fz_warn(ctx, "no resource dictionary for type 3 font!");
font->t3doc = doc;
font->t3run = pdf_run_glyph_func;
/* CharProcs */
charprocs = pdf_dict_get(ctx, dict, PDF_NAME_CharProcs);
if (!charprocs)
{
fz_throw(ctx, FZ_ERROR_GENERIC, "syntaxerror: Type3 font missing CharProcs");
}
for (i = 0; i < 256; i++)
{
if (estrings[i])
{
obj = pdf_dict_gets(ctx, charprocs, estrings[i]);
if (pdf_is_stream(ctx, obj))
{
font->t3procs[i] = pdf_load_stream(ctx, obj);
fz_trim_buffer(ctx, font->t3procs[i]);
fontdesc->size += fz_buffer_storage(ctx, font->t3procs[i], NULL);
fontdesc->size += 0; // TODO: display list size calculation
}
}
}
}
fz_catch(ctx)
{
pdf_drop_font(ctx, fontdesc);
fz_rethrow(ctx);
}
doc->type3_fonts[doc->num_type3_fonts++] = fz_keep_font(ctx, font);
return fontdesc;
}
void
pdf_update_annot(pdf_document *xref, pdf_annot *annot)
{
pdf_obj *obj, *ap, *as, *n, *d, *c;
fz_context *ctx = xref->ctx;
int suitable;
int mouse_states;
pdf_hotspot *hp = &xref->hotspot;
obj = annot->obj;
if (hp->num == pdf_to_num(obj)
&& hp->gen == pdf_to_gen(obj)
&& (hp->state & HOTSPOT_POINTER_DOWN))
{
mouse_states = MOUSE_DOWN_APPEARANCE;
}
else
{
mouse_states = MOUSE_UP_APPEARANCE;
}
suitable = (annot->mouse_states & mouse_states);
if (pdf_update_appearance(xref, obj) || !suitable || annot->has_states)
{
ap = pdf_dict_gets(obj, "AP");
as = pdf_dict_gets(obj, "AS");
if (pdf_is_dict(ap))
{
pdf_hotspot *hp = &xref->hotspot;
n = pdf_dict_gets(ap, "N"); /* normal state */
d = pdf_dict_gets(ap, "D"); /* down state */
if (mouse_states == MOUSE_DOWN_APPEARANCE)
c = d?d:n;
else
c = n?n:d;
annot->has_states = 0;
/* lookup current state in sub-dictionary */
if (!pdf_is_stream(xref, pdf_to_num(c), pdf_to_gen(c)))
{
annot->has_states = 1;
c = pdf_dict_get(c, as);
}
/* This test is important to avoid losing the knowledge
* that an appearance stream is for both mouse states */
if (!suitable)
annot->mouse_states = mouse_states;
pdf_drop_xobject(ctx, annot->ap);
annot->ap = NULL;
if (pdf_is_stream(xref, pdf_to_num(c), pdf_to_gen(c)))
{
fz_try(ctx)
{
annot->ap = pdf_load_xobject(xref, c);
pdf_transform_annot(annot);
}
fz_catch(ctx)
{
fz_warn(ctx, "ignoring broken annotation");
}
}
if (obj == xref->focus_obj)
xref->focus = annot;
}
}
pdf_annot *
pdf_load_annots(pdf_document *xref, pdf_obj *annots, fz_matrix page_ctm)
{
pdf_annot *annot, *head, *tail;
pdf_obj *obj, *ap, *as, *n, *d, *c, *rect;
int i, len;
int mouse_states;
int has_states = 0;
fz_context *ctx = xref->ctx;
head = tail = NULL;
annot = NULL;
len = pdf_array_len(annots);
for (i = 0; i < len; i++)
{
obj = pdf_array_get(annots, i);
pdf_update_appearance(xref, obj);
rect = pdf_dict_gets(obj, "Rect");
ap = pdf_dict_gets(obj, "AP");
as = pdf_dict_gets(obj, "AS");
if (pdf_is_dict(ap))
{
pdf_hotspot *hp = &xref->hotspot;
n = pdf_dict_gets(ap, "N"); /* normal state */
d = pdf_dict_gets(ap, "D"); /* down state */
if (n && d)
{
if (hp->num == pdf_to_num(obj)
&& hp->gen == pdf_to_gen(obj)
&& (hp->state & HOTSPOT_POINTER_DOWN))
{
/* Use the down appearance, but as we also have
* a normal appearance, it is suitable only for mouse
* down */
c = d;
mouse_states = MOUSE_DOWN_APPEARANCE;
}
else
{
/* Use the normal appearance, but as we also have
* a down appearance, it is suitable only for mouse
* up */
c = n;
mouse_states = MOUSE_UP_APPEARANCE;
}
}
else
{
/* Use whichever appearance we have for both states */
c = n?n:d;
mouse_states = MOUSE_UP_APPEARANCE|MOUSE_DOWN_APPEARANCE;
}
/* lookup current state in sub-dictionary */
if (!pdf_is_stream(xref, pdf_to_num(c), pdf_to_gen(c)))
{
has_states = 1;
c = pdf_dict_get(c, as);
}
annot = fz_malloc_struct(ctx, pdf_annot);
annot->obj = pdf_keep_obj(obj);
annot->rect = pdf_to_rect(ctx, rect);
annot->pagerect = fz_transform_rect(page_ctm, annot->rect);
annot->ap = NULL;
annot->type = pdf_field_type(xref, obj);
annot->mouse_states = mouse_states;
annot->has_states = has_states;
if (pdf_is_stream(xref, pdf_to_num(c), pdf_to_gen(c)))
{
fz_try(ctx)
{
annot->ap = pdf_load_xobject(xref, c);
pdf_transform_annot(annot);
}
fz_catch(ctx)
{
fz_warn(ctx, "ignoring broken annotation");
}
}
annot->next = NULL;
if (obj == xref->focus_obj)
xref->focus = annot;
if (!head)
head = tail = annot;
else
{
tail->next = annot;
tail = annot;
}
}
}
return head;
}
/* Convert Unicode/PdfDocEncoding string into utf-8 */
char *
pdf_to_utf8(pdf_document *doc, pdf_obj *src)
{
fz_context *ctx = doc->ctx;
fz_buffer *strmbuf = NULL;
unsigned char *srcptr;
char *dstptr, *dst;
int srclen;
int dstlen = 0;
int ucs;
int i;
fz_var(strmbuf);
fz_try(ctx)
{
if (pdf_is_string(src))
{
srcptr = (unsigned char *) pdf_to_str_buf(src);
srclen = pdf_to_str_len(src);
}
else if (pdf_is_stream(doc, pdf_to_num(src), pdf_to_gen(src)))
{
strmbuf = pdf_load_stream(doc, pdf_to_num(src), pdf_to_gen(src));
srclen = fz_buffer_storage(ctx, strmbuf, (unsigned char **)&srcptr);
}
else
{
srclen = 0;
}
if (srclen >= 2 && srcptr[0] == 254 && srcptr[1] == 255)
{
for (i = 2; i + 1 < srclen; i += 2)
{
ucs = srcptr[i] << 8 | srcptr[i+1];
dstlen += fz_runelen(ucs);
}
dstptr = dst = fz_malloc(ctx, dstlen + 1);
for (i = 2; i + 1 < srclen; i += 2)
{
ucs = srcptr[i] << 8 | srcptr[i+1];
dstptr += fz_runetochar(dstptr, ucs);
}
}
else if (srclen >= 2 && srcptr[0] == 255 && srcptr[1] == 254)
{
for (i = 2; i + 1 < srclen; i += 2)
{
ucs = srcptr[i] | srcptr[i+1] << 8;
dstlen += fz_runelen(ucs);
}
dstptr = dst = fz_malloc(ctx, dstlen + 1);
for (i = 2; i + 1 < srclen; i += 2)
{
ucs = srcptr[i] | srcptr[i+1] << 8;
dstptr += fz_runetochar(dstptr, ucs);
}
}
else
{
for (i = 0; i < srclen; i++)
dstlen += fz_runelen(pdf_doc_encoding[srcptr[i]]);
dstptr = dst = fz_malloc(ctx, dstlen + 1);
for (i = 0; i < srclen; i++)
{
ucs = pdf_replace_undefined(pdf_doc_encoding[srcptr[i]]);
dstptr += fz_runetochar(dstptr, ucs);
}
}
}
fz_always(ctx)
{
fz_drop_buffer(ctx, strmbuf);
}
fz_catch(ctx)
{
fz_rethrow(ctx);
}
*dstptr = '\0';
return dst;
}
void
pdf_load_to_unicode(pdf_document *doc, pdf_font_desc *font,
char **strings, char *collection, pdf_obj *cmapstm)
{
pdf_cmap *cmap;
int cid;
int ucsbuf[8];
int ucslen;
int i;
fz_context *ctx = doc->ctx;
if (pdf_is_stream(doc, pdf_to_num(cmapstm), pdf_to_gen(cmapstm)))
{
cmap = pdf_load_embedded_cmap(doc, cmapstm);
font->to_unicode = pdf_new_cmap(ctx);
for (i = 0; i < (strings ? 256 : 65536); i++)
{
cid = pdf_lookup_cmap(font->encoding, i);
if (cid >= 0)
{
ucslen = pdf_lookup_cmap_full(cmap, i, ucsbuf);
if (ucslen == 1)
pdf_map_range_to_range(ctx, font->to_unicode, cid, cid, ucsbuf[0]);
if (ucslen > 1)
pdf_map_one_to_many(ctx, font->to_unicode, cid, ucsbuf, ucslen);
}
}
pdf_sort_cmap(ctx, font->to_unicode);
pdf_drop_cmap(ctx, cmap);
font->size += pdf_cmap_size(ctx, font->to_unicode);
}
else if (collection)
{
if (!strcmp(collection, "Adobe-CNS1"))
font->to_unicode = pdf_load_system_cmap(ctx, "Adobe-CNS1-UCS2");
else if (!strcmp(collection, "Adobe-GB1"))
font->to_unicode = pdf_load_system_cmap(ctx, "Adobe-GB1-UCS2");
else if (!strcmp(collection, "Adobe-Japan1"))
font->to_unicode = pdf_load_system_cmap(ctx, "Adobe-Japan1-UCS2");
else if (!strcmp(collection, "Adobe-Korea1"))
font->to_unicode = pdf_load_system_cmap(ctx, "Adobe-Korea1-UCS2");
return;
}
if (strings)
{
/* TODO one-to-many mappings */
font->cid_to_ucs_len = 256;
font->cid_to_ucs = fz_malloc_array(ctx, 256, sizeof(unsigned short));
font->size += 256 * sizeof(unsigned short);
for (i = 0; i < 256; i++)
{
if (strings[i])
font->cid_to_ucs[i] = pdf_lookup_agl(strings[i]);
else
font->cid_to_ucs[i] = '?';
}
}
if (!font->to_unicode && !font->cid_to_ucs)
{
/* TODO: synthesize a ToUnicode if it's a freetype font with
* cmap and/or post tables or if it has glyph names. */
}
}
/* Convert Unicode/PdfDocEncoding string into utf-8 */
char *
pdf_to_utf8(fz_context *ctx, pdf_document *doc, pdf_obj *src)
{
fz_buffer *stmbuf = NULL;
unsigned char *srcptr;
char *dstptr, *dst;
size_t srclen;
size_t dstlen = 0;
int ucs;
size_t i;
fz_var(stmbuf);
fz_try(ctx)
{
if (pdf_is_string(ctx, src))
{
srcptr = (unsigned char *) pdf_to_str_buf(ctx, src);
srclen = pdf_to_str_len(ctx, src);
}
else if (pdf_is_stream(ctx, src))
{
stmbuf = pdf_load_stream(ctx, doc, pdf_to_num(ctx, src), pdf_to_gen(ctx, src));
srclen = fz_buffer_storage(ctx, stmbuf, (unsigned char **)&srcptr);
}
else
{
srclen = 0;
}
/* UTF-16BE */
if (srclen >= 2 && srcptr[0] == 254 && srcptr[1] == 255)
{
i = 2;
while (i + 2 <= srclen)
{
/* skip language escape codes */
if (i + 6 <= srclen &&
srcptr[i+0] == 0 && srcptr[i+1] == 27 &&
srcptr[i+4] == 0 && srcptr[i+5] == 27)
{
i += 6;
}
else if (i + 8 <= srclen &&
srcptr[i+0] == 0 && srcptr[i+1] == 27 &&
srcptr[i+6] == 0 && srcptr[i+7] == 27)
{
i += 8;
}
else
{
i += rune_from_utf16be(&ucs, srcptr + i, srcptr + srclen);
dstlen += fz_runelen(ucs);
}
}
dstptr = dst = fz_malloc(ctx, dstlen + 1);
i = 2;
while (i + 2 <= srclen)
{
/* skip language escape codes */
if (i + 6 <= srclen &&
srcptr[i+0] == 0 && srcptr[i+1] == 27 &&
srcptr[i+4] == 0 && srcptr[i+5] == 27)
{
i += 6;
}
else if (i + 8 <= srclen &&
srcptr[i+0] == 0 && srcptr[i+1] == 27 &&
srcptr[i+6] == 0 && srcptr[i+7] == 27)
{
i += 8;
}
else
{
i += rune_from_utf16be(&ucs, srcptr + i, srcptr + srclen);
dstptr += fz_runetochar(dstptr, ucs);
}
}
}
/* PDFDocEncoding */
else
{
for (i = 0; i < srclen; i++)
dstlen += fz_runelen(pdf_doc_encoding[srcptr[i]]);
dstptr = dst = fz_malloc(ctx, dstlen + 1);
for (i = 0; i < srclen; i++)
{
ucs = pdf_doc_encoding[srcptr[i]];
dstptr += fz_runetochar(dstptr, ucs);
}
}
}
fz_always(ctx)
{
fz_drop_buffer(ctx, stmbuf);
}
fz_catch(ctx)
{
fz_rethrow(ctx);
}
*dstptr = '\0';
return dst;
}
pdf_font_desc *
pdf_load_type3_font(pdf_document *doc, pdf_obj *rdb, pdf_obj *dict)
{
char buf[256];
char *estrings[256];
pdf_font_desc *fontdesc = NULL;
pdf_obj *encoding;
pdf_obj *widths;
pdf_obj *charprocs;
pdf_obj *obj;
int first, last;
int i, k, n;
fz_rect bbox;
fz_matrix matrix;
fz_context *ctx = doc->ctx;
fz_var(fontdesc);
/* Make a new type3 font entry in the document */
if (doc->num_type3_fonts == doc->max_type3_fonts)
{
int new_max = doc->max_type3_fonts * 2;
if (new_max == 0)
new_max = 4;
doc->type3_fonts = fz_resize_array(doc->ctx, doc->type3_fonts, new_max, sizeof(*doc->type3_fonts));
doc->max_type3_fonts = new_max;
}
fz_try(ctx)
{
obj = pdf_dict_gets(dict, "Name");
if (pdf_is_name(obj))
fz_strlcpy(buf, pdf_to_name(obj), sizeof buf);
else
sprintf(buf, "Unnamed-T3");
fontdesc = pdf_new_font_desc(ctx);
obj = pdf_dict_gets(dict, "FontMatrix");
pdf_to_matrix(ctx, obj, &matrix);
obj = pdf_dict_gets(dict, "FontBBox");
fz_transform_rect(pdf_to_rect(ctx, obj, &bbox), &matrix);
fontdesc->font = fz_new_type3_font(ctx, buf, &matrix);
fontdesc->size += sizeof(fz_font) + 256 * (sizeof(fz_buffer*) + sizeof(float));
fz_set_font_bbox(ctx, fontdesc->font, bbox.x0, bbox.y0, bbox.x1, bbox.y1);
/* SumatraPDF: expose Type3 FontDescriptor flags */
fontdesc->flags = pdf_to_int(pdf_dict_gets(pdf_dict_gets(dict, "FontDescriptor"), "Flags"));
/* Encoding */
for (i = 0; i < 256; i++)
estrings[i] = NULL;
encoding = pdf_dict_gets(dict, "Encoding");
if (!encoding)
{
fz_throw(ctx, FZ_ERROR_GENERIC, "syntaxerror: Type3 font missing Encoding");
}
if (pdf_is_name(encoding))
pdf_load_encoding(estrings, pdf_to_name(encoding));
if (pdf_is_dict(encoding))
{
pdf_obj *base, *diff, *item;
base = pdf_dict_gets(encoding, "BaseEncoding");
if (pdf_is_name(base))
pdf_load_encoding(estrings, pdf_to_name(base));
diff = pdf_dict_gets(encoding, "Differences");
if (pdf_is_array(diff))
{
n = pdf_array_len(diff);
k = 0;
for (i = 0; i < n; i++)
{
item = pdf_array_get(diff, i);
if (pdf_is_int(item))
k = pdf_to_int(item);
if (pdf_is_name(item) && k >= 0 && k < nelem(estrings))
estrings[k++] = pdf_to_name(item);
}
}
}
fontdesc->encoding = pdf_new_identity_cmap(ctx, 0, 1);
fontdesc->size += pdf_cmap_size(ctx, fontdesc->encoding);
pdf_load_to_unicode(doc, fontdesc, estrings, NULL, pdf_dict_gets(dict, "ToUnicode"));
/* SumatraPDF: trying to match Adobe Reader's behavior */
if (!(fontdesc->flags & PDF_FD_SYMBOLIC) && fontdesc->cid_to_ucs_len >= 128)
for (i = 32; i < 128; i++)
if (fontdesc->cid_to_ucs[i] == '?' || fontdesc->cid_to_ucs[i] == '\0')
fontdesc->cid_to_ucs[i] = i;
/* Widths */
pdf_set_default_hmtx(ctx, fontdesc, 0);
first = pdf_to_int(pdf_dict_gets(dict, "FirstChar"));
last = pdf_to_int(pdf_dict_gets(dict, "LastChar"));
/* cf. http://code.google.com/p/sumatrapdf/issues/detail?id=1966 */
if (first >= 256 && last - first < 256)
{
fz_warn(ctx, "ignoring out-of-bound values for FirstChar/LastChar: %d/%d", first, last);
last -= first;
first = 0;
}
if (first < 0 || last > 255 || first > last)
first = last = 0;
widths = pdf_dict_gets(dict, "Widths");
if (!widths)
{
fz_throw(ctx, FZ_ERROR_GENERIC, "syntaxerror: Type3 font missing Widths");
}
for (i = first; i <= last; i++)
{
float w = pdf_to_real(pdf_array_get(widths, i - first));
w = fontdesc->font->t3matrix.a * w * 1000;
fontdesc->font->t3widths[i] = w * 0.001f;
pdf_add_hmtx(ctx, fontdesc, i, i, w);
}
pdf_end_hmtx(ctx, fontdesc);
/* Resources -- inherit page resources if the font doesn't have its own */
fontdesc->font->t3freeres = pdf_t3_free_resources;
fontdesc->font->t3resources = pdf_dict_gets(dict, "Resources");
if (!fontdesc->font->t3resources)
fontdesc->font->t3resources = rdb;
if (fontdesc->font->t3resources)
pdf_keep_obj(fontdesc->font->t3resources);
if (!fontdesc->font->t3resources)
fz_warn(ctx, "no resource dictionary for type 3 font!");
fontdesc->font->t3doc = doc;
fontdesc->font->t3run = pdf_run_glyph_func;
/* CharProcs */
charprocs = pdf_dict_gets(dict, "CharProcs");
if (!charprocs)
{
fz_throw(ctx, FZ_ERROR_GENERIC, "syntaxerror: Type3 font missing CharProcs");
}
for (i = 0; i < 256; i++)
{
if (estrings[i])
{
/* SumatraPDF: don't reject fonts with few broken glyphs */
fz_try(ctx)
{
obj = pdf_dict_gets(charprocs, estrings[i]);
if (pdf_is_stream(doc, pdf_to_num(obj), pdf_to_gen(obj)))
{
fontdesc->font->t3procs[i] = pdf_load_stream(doc, pdf_to_num(obj), pdf_to_gen(obj));
fontdesc->size += fontdesc->font->t3procs[i]->cap;
fontdesc->size += 0; // TODO: display list size calculation
}
}
fz_catch(ctx)
{
fz_warn(ctx, "failed to get data for type 3 glyph '%s'", estrings[i]);
}
}
}
}
fz_catch(ctx)
{
if (fontdesc)
pdf_drop_font(ctx, fontdesc);
fz_rethrow_message(ctx, "cannot load type3 font (%d %d R)", pdf_to_num(dict), pdf_to_gen(dict));
}
doc->type3_fonts[doc->num_type3_fonts++] = fz_keep_font(ctx, fontdesc->font);
return fontdesc;
}
void
pdf_load_annots(pdf_annot **annotp, pdf_xref *xref, fz_obj *annots)
{
pdf_annot *annot, *head, *tail;
fz_obj *obj, *ap, *as, *n, *rect;
pdf_xobject *form;
fz_error error;
int i;
fz_context *ctx = xref->ctx;
head = tail = NULL;
annot = NULL;
for (i = 0; i < fz_array_len(ctx, annots); i++)
{
obj = fz_array_get(ctx, annots, i);
/* cf. http://bugs.ghostscript.com/show_bug.cgi?id=692078 */
if ((annot = pdf_update_tx_widget_annot(xref, obj)))
{
if (!head)
head = tail = annot;
else
{
tail->next = annot;
tail = annot;
}
continue;
}
rect = fz_dict_gets(ctx, obj, "Rect");
ap = fz_dict_gets(ctx, obj, "AP");
as = fz_dict_gets(ctx, obj, "AS");
if (fz_is_dict(ctx, ap))
{
n = fz_dict_gets(ctx, ap, "N"); /* normal state */
/* lookup current state in sub-dictionary */
if (!pdf_is_stream(xref, fz_to_num(n), fz_to_gen(n)))
n = fz_dict_get(ctx, n, as);
if (pdf_is_stream(xref, fz_to_num(n), fz_to_gen(n)))
{
error = pdf_load_xobject(&form, xref, n);
if (error)
{
fz_error_handle(ctx, error, "ignoring broken annotation");
continue;
}
annot = fz_malloc(ctx, sizeof(pdf_annot));
annot->obj = fz_keep_obj(obj);
annot->rect = pdf_to_rect(ctx, rect);
annot->ap = form;
annot->next = NULL;
pdf_transform_annot(annot);
if (annot)
{
if (!head)
head = tail = annot;
else
{
tail->next = annot;
tail = annot;
}
}
}
}
/* SumatraPDF: synthesize appearance streams for a few more annotations */
else if ((annot = pdf_create_annot_with_appearance(xref, obj)))
{
if (!head)
head = tail = annot;
else
{
tail->next = annot;
tail = annot;
}
}
}
*annotp = head;
}
void
pdf_load_annots(fz_context *ctx, pdf_page *page, pdf_obj *annots)
{
pdf_document *doc = page->doc;
pdf_annot *annot, **itr;
pdf_obj *obj, *ap, *as, *n;
int i, len, keep_annot;
fz_var(annot);
fz_var(itr);
fz_var(keep_annot);
itr = &page->annots;
len = pdf_array_len(ctx, annots);
/*
Create an initial linked list of pdf_annot structures with only the obj field
filled in. We do this because update_appearance has the potential to change
the annot array, so we don't want to be iterating through the array while
that happens.
*/
fz_try(ctx)
{
for (i = 0; i < len; i++)
{
obj = pdf_array_get(ctx, annots, i);
annot = pdf_new_annot(ctx, page);
*itr = annot;
annot->obj = pdf_keep_obj(ctx, obj);
itr = &annot->next;
}
}
fz_catch(ctx)
{
pdf_drop_annots(ctx, page->annots);
page->annots = NULL;
fz_rethrow(ctx);
}
/*
Iterate through the newly created annot linked list, using a double pointer to
facilitate deleting broken annotations.
*/
itr = &page->annots;
while (*itr)
{
annot = *itr;
fz_try(ctx)
{
pdf_hotspot *hp = &doc->hotspot;
n = NULL;
if (doc->update_appearance)
doc->update_appearance(ctx, doc, annot);
obj = annot->obj;
ap = pdf_dict_get(ctx, obj, PDF_NAME_AP);
as = pdf_dict_get(ctx, obj, PDF_NAME_AS);
/* We only collect annotations with an appearance
* stream into this list, so remove any that don't
* (such as links) and continue. */
keep_annot = pdf_is_dict(ctx, ap);
if (!keep_annot)
break;
if (hp->num == pdf_to_num(ctx, obj) && (hp->state & HOTSPOT_POINTER_DOWN))
{
n = pdf_dict_get(ctx, ap, PDF_NAME_D); /* down state */
}
if (n == NULL)
n = pdf_dict_get(ctx, ap, PDF_NAME_N); /* normal state */
/* lookup current state in sub-dictionary */
if (!pdf_is_stream(ctx, n))
n = pdf_dict_get(ctx, n, as);
annot->ap = NULL;
if (pdf_is_stream(ctx, n))
{
annot->ap = pdf_load_xobject(ctx, doc, n);
annot->ap_iteration = annot->ap->iteration;
}
else
fz_warn(ctx, "no appearance stream for annotation %d 0 R", pdf_to_num(ctx, annot->obj));
if (obj == doc->focus_obj)
doc->focus = annot;
/* Move to next item in the linked list */
itr = &annot->next;
}
fz_catch(ctx)
{
if (fz_caught(ctx) == FZ_ERROR_TRYLATER)
{
pdf_drop_annots(ctx, page->annots);
page->annots = NULL;
fz_rethrow(ctx);
}
keep_annot = 0;
fz_warn(ctx, "ignoring broken annotation");
}
if (!keep_annot)
{
/* Move to next item in the linked list, dropping this one */
*itr = annot->next;
annot->next = NULL; /* Required because pdf_drop_annots follows the "next" chain */
pdf_drop_annots(ctx, annot);
}
}
page->annot_tailp = itr;
}
fz_error
pdf_load_to_unicode(pdf_font_desc *font, pdf_xref *xref,
char **strings, char *collection, fz_obj *cmapstm)
{
fz_error error = fz_okay;
pdf_cmap *cmap;
int cid;
int ucsbuf[8];
int ucslen;
int i;
if (pdf_is_stream(xref, fz_to_num(cmapstm), fz_to_gen(cmapstm)))
{
error = pdf_load_embedded_cmap(&cmap, xref, cmapstm);
if (error)
return fz_rethrow(error, "cannot load embedded cmap (%d %d R)", fz_to_num(cmapstm), fz_to_gen(cmapstm));
font->to_unicode = pdf_new_cmap();
for (i = 0; i < (strings ? 256 : 65536); i++)
{
cid = pdf_lookup_cmap(font->encoding, i);
if (cid >= 0)
{
ucslen = pdf_lookup_cmap_full(cmap, i, ucsbuf);
if (ucslen == 1)
pdf_map_range_to_range(font->to_unicode, cid, cid, ucsbuf[0]);
if (ucslen > 1)
pdf_map_one_to_many(font->to_unicode, cid, ucsbuf, ucslen);
}
}
pdf_sort_cmap(font->to_unicode);
pdf_drop_cmap(cmap);
}
else if (collection)
{
error = fz_okay;
if (!strcmp(collection, "Adobe-CNS1"))
error = pdf_load_system_cmap(&font->to_unicode, "Adobe-CNS1-UCS2");
else if (!strcmp(collection, "Adobe-GB1"))
error = pdf_load_system_cmap(&font->to_unicode, "Adobe-GB1-UCS2");
else if (!strcmp(collection, "Adobe-Japan1"))
error = pdf_load_system_cmap(&font->to_unicode, "Adobe-Japan1-UCS2");
else if (!strcmp(collection, "Adobe-Korea1"))
error = pdf_load_system_cmap(&font->to_unicode, "Adobe-Korea1-UCS2");
if (error)
return fz_rethrow(error, "cannot load ToUnicode system cmap %s-UCS2", collection);
}
if (strings)
{
/* TODO one-to-many mappings */
font->cid_to_ucs_len = 256;
font->cid_to_ucs = fz_calloc(256, sizeof(unsigned short));
for (i = 0; i < 256; i++)
{
if (strings[i])
font->cid_to_ucs[i] = pdf_lookup_agl(strings[i]);
else
font->cid_to_ucs[i] = '?';
}
}
if (!font->to_unicode && !font->cid_to_ucs)
{
/* TODO: synthesize a ToUnicode if it's a freetype font with
* cmap and/or post tables or if it has glyph names. */
}
return fz_okay;
}
pdf_font_desc *
pdf_load_type3_font(pdf_document *xref, pdf_obj *rdb, pdf_obj *dict)
{
char buf[256];
char *estrings[256];
pdf_font_desc *fontdesc = NULL;
pdf_obj *encoding;
pdf_obj *widths;
pdf_obj *charprocs;
pdf_obj *obj;
int first, last;
int i, k, n;
fz_rect bbox;
fz_matrix matrix;
fz_context *ctx = xref->ctx;
fz_var(fontdesc);
fz_try(ctx)
{
obj = pdf_dict_gets(dict, "Name");
if (pdf_is_name(obj))
fz_strlcpy(buf, pdf_to_name(obj), sizeof buf);
else
sprintf(buf, "Unnamed-T3");
fontdesc = pdf_new_font_desc(ctx);
obj = pdf_dict_gets(dict, "FontMatrix");
pdf_to_matrix(ctx, obj, &matrix);
obj = pdf_dict_gets(dict, "FontBBox");
fz_transform_rect(pdf_to_rect(ctx, obj, &bbox), &matrix);
fontdesc->font = fz_new_type3_font(ctx, buf, &matrix);
fontdesc->size += sizeof(fz_font) + 256 * (sizeof(fz_buffer*) + sizeof(float));
fz_set_font_bbox(ctx, fontdesc->font, bbox.x0, bbox.y0, bbox.x1, bbox.y1);
/* Encoding */
for (i = 0; i < 256; i++)
estrings[i] = NULL;
encoding = pdf_dict_gets(dict, "Encoding");
if (!encoding)
{
fz_throw(ctx, "syntaxerror: Type3 font missing Encoding");
}
if (pdf_is_name(encoding))
pdf_load_encoding(estrings, pdf_to_name(encoding));
if (pdf_is_dict(encoding))
{
pdf_obj *base, *diff, *item;
base = pdf_dict_gets(encoding, "BaseEncoding");
if (pdf_is_name(base))
pdf_load_encoding(estrings, pdf_to_name(base));
diff = pdf_dict_gets(encoding, "Differences");
if (pdf_is_array(diff))
{
n = pdf_array_len(diff);
k = 0;
for (i = 0; i < n; i++)
{
item = pdf_array_get(diff, i);
if (pdf_is_int(item))
k = pdf_to_int(item);
if (pdf_is_name(item) && k >= 0 && k < nelem(estrings))
estrings[k++] = pdf_to_name(item);
}
}
}
fontdesc->encoding = pdf_new_identity_cmap(ctx, 0, 1);
fontdesc->size += pdf_cmap_size(ctx, fontdesc->encoding);
pdf_load_to_unicode(xref, fontdesc, estrings, NULL, pdf_dict_gets(dict, "ToUnicode"));
/* Widths */
pdf_set_default_hmtx(ctx, fontdesc, 0);
first = pdf_to_int(pdf_dict_gets(dict, "FirstChar"));
last = pdf_to_int(pdf_dict_gets(dict, "LastChar"));
if (first < 0 || last > 255 || first > last)
first = last = 0;
widths = pdf_dict_gets(dict, "Widths");
if (!widths)
{
fz_throw(ctx, "syntaxerror: Type3 font missing Widths");
}
for (i = first; i <= last; i++)
{
float w = pdf_to_real(pdf_array_get(widths, i - first));
w = fontdesc->font->t3matrix.a * w * 1000;
fontdesc->font->t3widths[i] = w * 0.001f;
pdf_add_hmtx(ctx, fontdesc, i, i, w);
}
pdf_end_hmtx(ctx, fontdesc);
/* Resources -- inherit page resources if the font doesn't have its own */
fontdesc->font->t3freeres = pdf_t3_free_resources;
fontdesc->font->t3resources = pdf_dict_gets(dict, "Resources");
if (!fontdesc->font->t3resources)
fontdesc->font->t3resources = rdb;
if (fontdesc->font->t3resources)
pdf_keep_obj(fontdesc->font->t3resources);
if (!fontdesc->font->t3resources)
fz_warn(ctx, "no resource dictionary for type 3 font!");
fontdesc->font->t3doc = xref;
fontdesc->font->t3run = pdf_run_glyph_func;
/* CharProcs */
charprocs = pdf_dict_gets(dict, "CharProcs");
if (!charprocs)
{
fz_throw(ctx, "syntaxerror: Type3 font missing CharProcs");
}
for (i = 0; i < 256; i++)
{
if (estrings[i])
{
obj = pdf_dict_gets(charprocs, estrings[i]);
if (pdf_is_stream(xref, pdf_to_num(obj), pdf_to_gen(obj)))
{
fontdesc->font->t3procs[i] = pdf_load_stream(xref, pdf_to_num(obj), pdf_to_gen(obj));
fontdesc->size += fontdesc->font->t3procs[i]->cap;
fontdesc->size += 0; // TODO: display list size calculation
}
}
}
}
fz_catch(ctx)
{
if (fontdesc)
pdf_drop_font(ctx, fontdesc);
fz_throw(ctx, "cannot load type3 font (%d %d R)", pdf_to_num(dict), pdf_to_gen(dict));
}
return fontdesc;
}
static void writeobject(int num, int gen)
{
fz_obj *obj;
fz_obj *type;
obj = pdf_load_object(xref, num, gen);
/* skip ObjStm and XRef objects */
if (fz_is_dict(obj))
{
type = fz_dict_gets(obj, "Type");
if (fz_is_name(type) && !strcmp(fz_to_name(type), "ObjStm"))
{
uselist[num] = 0;
fz_drop_obj(obj);
return;
}
if (fz_is_name(type) && !strcmp(fz_to_name(type), "XRef"))
{
uselist[num] = 0;
fz_drop_obj(obj);
return;
}
}
if (!pdf_is_stream(xref, num, gen))
{
fprintf(out, "%d %d obj\n", num, gen);
fz_fprint_obj(out, obj, doexpand == 0);
fprintf(out, "endobj\n\n");
}
else
{
int dontexpand = 0;
if (doexpand != 0 && doexpand != expand_all)
{
fz_obj *o;
if ((o = fz_dict_gets(obj, "Type"), !strcmp(fz_to_name(o), "XObject")) &&
(o = fz_dict_gets(obj, "Subtype"), !strcmp(fz_to_name(o), "Image")))
dontexpand = !(doexpand & expand_images);
if (o = fz_dict_gets(obj, "Type"), !strcmp(fz_to_name(o), "Font"))
dontexpand = !(doexpand & expand_fonts);
if (o = fz_dict_gets(obj, "Type"), !strcmp(fz_to_name(o), "FontDescriptor"))
dontexpand = !(doexpand & expand_fonts);
if ((o = fz_dict_gets(obj, "Length1")) != NULL)
dontexpand = !(doexpand & expand_fonts);
if ((o = fz_dict_gets(obj, "Length2")) != NULL)
dontexpand = !(doexpand & expand_fonts);
if ((o = fz_dict_gets(obj, "Length3")) != NULL)
dontexpand = !(doexpand & expand_fonts);
if (o = fz_dict_gets(obj, "Subtype"), !strcmp(fz_to_name(o), "Type1C"))
dontexpand = !(doexpand & expand_fonts);
if (o = fz_dict_gets(obj, "Subtype"), !strcmp(fz_to_name(o), "CIDFontType0C"))
dontexpand = !(doexpand & expand_fonts);
}
if (doexpand && !dontexpand && !pdf_is_jpx_image(ctx, obj))
expandstream(obj, num, gen);
else
copystream(obj, num, gen);
}
fz_drop_obj(obj);
}
/* Graft object from dst to source */
pdf_obj *
pdf_graft_object(fz_context *ctx, pdf_document *dst, pdf_document *src, pdf_obj *obj_ref, pdf_graft_map *map)
{
pdf_obj *val, *key;
pdf_obj *new_obj = NULL;
pdf_obj *new_dict = NULL;
pdf_obj *new_array = NULL;
pdf_obj *ref = NULL;
fz_buffer *buffer = NULL;
pdf_graft_map *drop_map = NULL;
int new_num, src_num, len, i;
if (map == NULL)
drop_map = map = pdf_new_graft_map(ctx, src);
if (pdf_is_indirect(ctx, obj_ref))
{
src_num = pdf_to_num(ctx, obj_ref);
/* Check if we have done this one. If yes, then drop map (if allocated)
* and return our indirect ref */
if (map->dst_from_src[src_num] != 0)
{
int dest_num = map->dst_from_src[src_num];
pdf_drop_graft_map(ctx, drop_map);
return pdf_new_indirect(ctx, dst, dest_num, 0);
}
fz_var(buffer);
fz_var(ref);
fz_try(ctx)
{
/* Create new slot for our src object, set the mapping and call again
* using the resolved indirect reference */
new_num = pdf_create_object(ctx, dst);
map->dst_from_src[src_num] = new_num;
new_obj = pdf_graft_object(ctx, dst, src, pdf_resolve_indirect(ctx, obj_ref), map);
/* Return a ref to the new_obj making sure to attach any stream */
pdf_update_object(ctx, dst, new_num, new_obj);
pdf_drop_obj(ctx, new_obj);
ref = pdf_new_indirect(ctx, dst, new_num, 0);
if (pdf_is_stream(ctx, obj_ref))
{
buffer = pdf_load_raw_stream(ctx, src, src_num, 0);
pdf_update_stream(ctx, dst, ref, buffer, 1);
}
}
fz_always(ctx)
{
fz_drop_buffer(ctx, buffer);
pdf_drop_graft_map(ctx, drop_map);
}
fz_catch(ctx)
{
pdf_drop_obj(ctx, ref);
fz_rethrow(ctx);
}
return ref;
}
else if (pdf_is_dict(ctx, obj_ref))
