static int
pdf_extgstate_uses_blending(pdf_document *doc, pdf_obj *dict)
{
pdf_obj *obj = pdf_dict_gets(dict, "BM");
/* SumatraPDF: properly support /BM arrays */
if (pdf_is_array(obj))
{
int k;
for (k = 0; k < pdf_array_len(obj); k++)
{
char *bm = pdf_to_name(pdf_array_get(obj, k));
if (!strcmp(bm, "Normal") || fz_lookup_blendmode(bm) > 0)
break;
}
obj = pdf_array_get(obj, k);
}
if (pdf_is_name(obj) && strcmp(pdf_to_name(obj), "Normal"))
return 1;
/* SumatraPDF: support transfer functions */
obj = pdf_dict_getsa(dict, "TR", "TR2");
if (obj && !pdf_is_name(obj))
return 1;
return 0;
}
static void
pdf_load_font_descriptor(pdf_font_desc *fontdesc, pdf_document *xref, pdf_obj *dict, char *collection, char *basefont)
{
pdf_obj *obj1, *obj2, *obj3, *obj;
char *fontname;
char *origname;
FT_Face face;
fz_context *ctx = xref->ctx;
if (!strchr(basefont, ',') || strchr(basefont, '+'))
origname = pdf_to_name(pdf_dict_gets(dict, "FontName"));
else
origname = basefont;
fontname = clean_font_name(origname);
fontdesc->flags = pdf_to_int(pdf_dict_gets(dict, "Flags"));
fontdesc->italic_angle = pdf_to_real(pdf_dict_gets(dict, "ItalicAngle"));
fontdesc->ascent = pdf_to_real(pdf_dict_gets(dict, "Ascent"));
fontdesc->descent = pdf_to_real(pdf_dict_gets(dict, "Descent"));
fontdesc->cap_height = pdf_to_real(pdf_dict_gets(dict, "CapHeight"));
fontdesc->x_height = pdf_to_real(pdf_dict_gets(dict, "XHeight"));
fontdesc->missing_width = pdf_to_real(pdf_dict_gets(dict, "MissingWidth"));
obj1 = pdf_dict_gets(dict, "FontFile");
obj2 = pdf_dict_gets(dict, "FontFile2");
obj3 = pdf_dict_gets(dict, "FontFile3");
obj = obj1 ? obj1 : obj2 ? obj2 : obj3;
if (pdf_is_indirect(obj))
{
fz_try(ctx)
{
pdf_load_embedded_font(fontdesc, xref, obj);
}
fz_catch(ctx)
{
fz_warn(ctx, "ignored error when loading embedded font; attempting to load system font");
if (origname != fontname)
pdf_load_builtin_font(ctx, fontdesc, fontname);
else
pdf_load_system_font(ctx, fontdesc, fontname, collection);
/* RJW: "cannot load font descriptor (%d %d R)", pdf_to_num(dict), pdf_to_gen(dict) */
}
}
else
{
if (origname != fontname)
pdfout_data *
pdfout_data_scalar_from_pdf (fz_context *ctx, pdf_obj *obj)
{
const char *s;
if (pdf_is_null (ctx, obj))
return pdfout_data_scalar_new (ctx, "null", strlen ("null"));
else if (pdf_is_bool (ctx, obj))
{
if (pdf_to_bool (ctx, obj))
s = "true";
else
s = "false";
return pdfout_data_scalar_new (ctx, s, strlen (s));
}
else if (pdf_is_name (ctx, obj))
{
s = pdf_to_name (ctx, obj);
return pdfout_data_scalar_new (ctx, s, strlen (s));
}
else if (pdf_is_string (ctx, obj))
{
int len;
char *str = pdfout_str_obj_to_utf8 (ctx, obj, &len);
pdfout_data *result = pdfout_data_scalar_new (ctx, str, len);
free (str);
return result;
}
else if (pdf_is_int (ctx, obj))
{
int n = pdf_to_int (ctx, obj);
char buf[200];
int len = pdfout_snprintf (ctx, buf, "%d", n);
return pdfout_data_scalar_new (ctx, buf, len);
}
else if (pdf_is_real (ctx, obj))
{
float f = pdf_to_real (ctx, obj);
char buf[200];
int len = pdfout_snprintf (ctx, buf, "%g", f);
return pdfout_data_scalar_new (ctx, buf, len);
}
else
abort();
}
static void
pdf_write_widget_appearance(fz_context *ctx, pdf_annot *annot, fz_buffer *buf,
fz_rect *rect, fz_rect *bbox, fz_matrix *matrix, pdf_obj **res)
{
pdf_obj *ft = pdf_dict_get_inheritable(ctx, annot->obj, PDF_NAME(FT));
if (pdf_name_eq(ctx, ft, PDF_NAME(Tx)))
{
int ff = pdf_field_flags(ctx, annot->obj);
char *format = NULL;
const char *text = NULL;
if (!annot->ignore_trigger_events)
{
format = pdf_field_event_format(ctx, annot->page->doc, annot->obj);
if (format)
text = format;
else
text = pdf_field_value(ctx, annot->obj);
}
else
{
text = pdf_field_value(ctx, annot->obj);
}
fz_try(ctx)
pdf_write_tx_widget_appearance(ctx, annot, buf, rect, bbox, matrix, res, text, ff);
fz_always(ctx)
fz_free(ctx, format);
fz_catch(ctx)
fz_rethrow(ctx);
}
else if (pdf_name_eq(ctx, ft, PDF_NAME(Ch)))
{
pdf_write_ch_widget_appearance(ctx, annot, buf, rect, bbox, matrix, res);
}
else if (pdf_name_eq(ctx, ft, PDF_NAME(Sig)))
{
pdf_write_sig_widget_appearance(ctx, annot, buf, rect, bbox, matrix, res);
}
else
{
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot create appearance stream for %s widgets", pdf_to_name(ctx, ft));
}
}
int
pdf_lookup_page_number(pdf_document *doc, pdf_obj *node)
{
fz_context *ctx = doc->ctx;
int needle = pdf_to_num(node);
int total = 0;
pdf_obj *parent, *parent2;
if (strcmp(pdf_to_name(pdf_dict_gets(node, "Type")), "Page") != 0)
fz_throw(ctx, FZ_ERROR_GENERIC, "invalid page object");
parent2 = parent = pdf_dict_gets(node, "Parent");
fz_var(parent);
fz_try(ctx)
{
while (pdf_is_dict(parent))
{
if (pdf_mark_obj(parent))
fz_throw(ctx, FZ_ERROR_GENERIC, "cycle in page tree (parents)");
total += pdf_count_pages_before_kid(doc, parent, needle);
needle = pdf_to_num(parent);
parent = pdf_dict_gets(parent, "Parent");
}
}
fz_always(ctx)
{
/* Run back and unmark */
while (parent2)
{
pdf_unmark_obj(parent2);
if (parent2 == parent)
break;
parent2 = pdf_dict_gets(parent2, "Parent");
}
}
fz_catch(ctx)
{
fz_rethrow(ctx);
}
return total;
}
const char *
pdf_annot_icon_name(fz_context *ctx, pdf_annot *annot)
{
pdf_obj *name;
check_allowed_subtypes(ctx, annot, PDF_NAME(Name), icon_name_subtypes);
name = pdf_dict_get(ctx, annot->obj, PDF_NAME(Name));
if (!name)
{
pdf_obj *subtype = pdf_dict_get(ctx, annot->obj, PDF_NAME(Subtype));
if (pdf_name_eq(ctx, subtype, PDF_NAME(Text)))
return "Note";
if (pdf_name_eq(ctx, subtype, PDF_NAME(Stamp)))
return "Draft";
if (pdf_name_eq(ctx, subtype, PDF_NAME(FileAttachment)))
return "PushPin";
if (pdf_name_eq(ctx, subtype, PDF_NAME(Sound)))
return "Speaker";
}
return pdf_to_name(ctx, name);
}
static int
pdf_count_pages_before_kid(pdf_document *doc, pdf_obj *parent, int kid_num)
{
pdf_obj *kids = pdf_dict_gets(parent, "Kids");
int i, total = 0, len = pdf_array_len(kids);
for (i = 0; i < len; i++)
{
pdf_obj *kid = pdf_array_get(kids, i);
if (pdf_to_num(kid) == kid_num)
return total;
if (!strcmp(pdf_to_name(pdf_dict_gets(kid, "Type")), "Pages"))
{
pdf_obj *count = pdf_dict_gets(kid, "Count");
int n = pdf_to_int(count);
if (count == NULL || n <= 0)
fz_throw(doc->ctx, FZ_ERROR_GENERIC, "illegal or missing count in pages tree");
total += n;
}
else
total++;
}
fz_throw(doc->ctx, FZ_ERROR_GENERIC, "kid not found in parent's kids array");
}
/*
* Load CMap stream in PDF file
*/
pdf_cmap *
pdf_load_embedded_cmap(pdf_document *doc, pdf_obj *stmobj)
{
fz_stream *file = NULL;
pdf_cmap *cmap = NULL;
pdf_cmap *usecmap;
pdf_obj *wmode;
pdf_obj *obj = NULL;
fz_context *ctx = doc->ctx;
int phase = 0;
fz_var(phase);
fz_var(obj);
fz_var(file);
fz_var(cmap);
if (pdf_obj_marked(stmobj))
fz_throw(ctx, FZ_ERROR_GENERIC, "Recursion in embedded cmap");
if ((cmap = pdf_find_item(ctx, pdf_free_cmap_imp, stmobj)) != NULL)
{
return cmap;
}
fz_try(ctx)
{
file = pdf_open_stream(doc, pdf_to_num(stmobj), pdf_to_gen(stmobj));
phase = 1;
cmap = pdf_load_cmap(ctx, file);
phase = 2;
fz_close(file);
file = NULL;
wmode = pdf_dict_gets(stmobj, "WMode");
if (pdf_is_int(wmode))
pdf_set_cmap_wmode(ctx, cmap, pdf_to_int(wmode));
obj = pdf_dict_gets(stmobj, "UseCMap");
if (pdf_is_name(obj))
{
usecmap = pdf_load_system_cmap(ctx, pdf_to_name(obj));
pdf_set_usecmap(ctx, cmap, usecmap);
pdf_drop_cmap(ctx, usecmap);
}
else if (pdf_is_indirect(obj))
{
phase = 3;
pdf_mark_obj(obj);
usecmap = pdf_load_embedded_cmap(doc, obj);
pdf_unmark_obj(obj);
phase = 4;
pdf_set_usecmap(ctx, cmap, usecmap);
pdf_drop_cmap(ctx, usecmap);
}
pdf_store_item(ctx, stmobj, cmap, pdf_cmap_size(ctx, cmap));
}
fz_catch(ctx)
{
if (file)
fz_close(file);
if (cmap)
pdf_drop_cmap(ctx, cmap);
if (phase < 1)
fz_rethrow_message(ctx, "cannot open cmap stream (%d %d R)", pdf_to_num(stmobj), pdf_to_gen(stmobj));
else if (phase < 2)
fz_rethrow_message(ctx, "cannot parse cmap stream (%d %d R)", pdf_to_num(stmobj), pdf_to_gen(stmobj));
else if (phase < 3)
fz_rethrow_message(ctx, "cannot load system usecmap '%s'", pdf_to_name(obj));
else
{
if (phase == 3)
pdf_unmark_obj(obj);
fz_rethrow_message(ctx, "cannot load embedded usecmap (%d %d R)", pdf_to_num(obj), pdf_to_gen(obj));
}
}
return cmap;
}
static void
pdf_process_extgstate(fz_context *ctx, pdf_processor *proc, pdf_csi *csi, pdf_obj *dict)
{
pdf_obj *obj;
obj = pdf_dict_get(ctx, dict, PDF_NAME_LW);
if (pdf_is_number(ctx, obj) && proc->op_w)
proc->op_w(ctx, proc, pdf_to_real(ctx, obj));
obj = pdf_dict_get(ctx, dict, PDF_NAME_LC);
if (pdf_is_int(ctx, obj) && proc->op_J)
proc->op_J(ctx, proc, fz_clampi(pdf_to_int(ctx, obj), 0, 2));
obj = pdf_dict_get(ctx, dict, PDF_NAME_LJ);
if (pdf_is_int(ctx, obj) && proc->op_j)
proc->op_j(ctx, proc, fz_clampi(pdf_to_int(ctx, obj), 0, 2));
obj = pdf_dict_get(ctx, dict, PDF_NAME_ML);
if (pdf_is_number(ctx, obj) && proc->op_M)
proc->op_M(ctx, proc, pdf_to_real(ctx, obj));
obj = pdf_dict_get(ctx, dict, PDF_NAME_D);
if (pdf_is_array(ctx, obj) && proc->op_d)
{
pdf_obj *dash_array = pdf_array_get(ctx, obj, 0);
pdf_obj *dash_phase = pdf_array_get(ctx, obj, 1);
proc->op_d(ctx, proc, dash_array, pdf_to_real(ctx, dash_phase));
}
obj = pdf_dict_get(ctx, dict, PDF_NAME_RI);
if (pdf_is_name(ctx, obj) && proc->op_ri)
proc->op_ri(ctx, proc, pdf_to_name(ctx, obj));
obj = pdf_dict_get(ctx, dict, PDF_NAME_FL);
if (pdf_is_number(ctx, obj) && proc->op_i)
proc->op_i(ctx, proc, pdf_to_real(ctx, obj));
obj = pdf_dict_get(ctx, dict, PDF_NAME_Font);
if (pdf_is_array(ctx, obj) && proc->op_Tf)
{
pdf_obj *font_ref = pdf_array_get(ctx, obj, 0);
pdf_obj *font_size = pdf_array_get(ctx, obj, 1);
pdf_font_desc *font = load_font_or_hail_mary(ctx, csi->doc, csi->rdb, font_ref, 0, csi->cookie);
fz_try(ctx)
proc->op_Tf(ctx, proc, "ExtGState", font, pdf_to_real(ctx, font_size));
fz_always(ctx)
pdf_drop_font(ctx, font);
fz_catch(ctx)
fz_rethrow(ctx);
}
/* transfer functions */
obj = pdf_dict_get(ctx, dict, PDF_NAME_TR2);
if (pdf_is_name(ctx, obj))
if (!pdf_name_eq(ctx, obj, PDF_NAME_Identity) && !pdf_name_eq(ctx, obj, PDF_NAME_Default))
fz_warn(ctx, "ignoring transfer function");
if (!obj) /* TR is ignored in the presence of TR2 */
{
pdf_obj *tr = pdf_dict_get(ctx, dict, PDF_NAME_TR);
if (pdf_is_name(ctx, tr))
if (!pdf_name_eq(ctx, tr, PDF_NAME_Identity))
fz_warn(ctx, "ignoring transfer function");
}
/* transparency state */
obj = pdf_dict_get(ctx, dict, PDF_NAME_CA);
if (pdf_is_number(ctx, obj) && proc->op_gs_CA)
proc->op_gs_CA(ctx, proc, pdf_to_real(ctx, obj));
obj = pdf_dict_get(ctx, dict, PDF_NAME_ca);
if (pdf_is_number(ctx, obj) && proc->op_gs_ca)
proc->op_gs_ca(ctx, proc, pdf_to_real(ctx, obj));
obj = pdf_dict_get(ctx, dict, PDF_NAME_BM);
if (pdf_is_array(ctx, obj))
obj = pdf_array_get(ctx, obj, 0);
if (pdf_is_name(ctx, obj) && proc->op_gs_BM)
proc->op_gs_BM(ctx, proc, pdf_to_name(ctx, obj));
obj = pdf_dict_get(ctx, dict, PDF_NAME_SMask);
if (proc->op_gs_SMask)
{
if (pdf_is_dict(ctx, obj))
{
pdf_xobject *xobj;
pdf_obj *group, *s, *bc, *tr;
float softmask_bc[FZ_MAX_COLORS];
fz_colorspace *colorspace;
int colorspace_n = 1;
int k, luminosity;
fz_var(xobj);
group = pdf_dict_get(ctx, obj, PDF_NAME_G);
if (!group)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot load softmask xobject (%d 0 R)", pdf_to_num(ctx, obj));
xobj = pdf_load_xobject(ctx, csi->doc, group);
fz_try(ctx)
{
colorspace = pdf_xobject_colorspace(ctx, xobj);
if (colorspace)
{
colorspace_n = fz_colorspace_n(ctx, colorspace);
fz_drop_colorspace(ctx, colorspace);
}
/* Default background color is black. */
for (k = 0; k < colorspace_n; k++)
softmask_bc[k] = 0;
/* Which in CMYK means not all zeros! This should really be
* a test for subtractive color spaces, but this will have
* to do for now. */
if (colorspace == fz_device_cmyk(ctx))
softmask_bc[3] = 1.0;
bc = pdf_dict_get(ctx, obj, PDF_NAME_BC);
if (pdf_is_array(ctx, bc))
{
for (k = 0; k < colorspace_n; k++)
softmask_bc[k] = pdf_to_real(ctx, pdf_array_get(ctx, bc, k));
}
s = pdf_dict_get(ctx, obj, PDF_NAME_S);
if (pdf_name_eq(ctx, s, PDF_NAME_Luminosity))
luminosity = 1;
else
luminosity = 0;
tr = pdf_dict_get(ctx, obj, PDF_NAME_TR);
if (tr && !pdf_name_eq(ctx, tr, PDF_NAME_Identity))
fz_warn(ctx, "ignoring transfer function");
proc->op_gs_SMask(ctx, proc, xobj, csi->rdb, softmask_bc, luminosity);
}
fz_always(ctx)
{
pdf_drop_xobject(ctx, xobj);
}
fz_catch(ctx)
{
fz_rethrow(ctx);
}
}
else if (pdf_is_name(ctx, obj) && pdf_name_eq(ctx, obj, PDF_NAME_None))
{
proc->op_gs_SMask(ctx, proc, NULL, NULL, NULL, 0);
}
}
pdf_xobject *
pdf_load_xobject(pdf_document *xref, pdf_obj *dict)
{
pdf_xobject *form;
pdf_obj *obj;
fz_context *ctx = xref->ctx;
if ((form = pdf_find_item(ctx, pdf_free_xobject_imp, dict)))
{
return form;
}
form = fz_malloc_struct(ctx, pdf_xobject);
FZ_INIT_STORABLE(form, 1, pdf_free_xobject_imp);
form->resources = NULL;
form->contents = NULL;
form->colorspace = NULL;
form->me = NULL;
/* Store item immediately, to avoid possible recursion if objects refer back to this one */
pdf_store_item(ctx, dict, form, pdf_xobject_size(form));
obj = pdf_dict_gets(dict, "BBox");
form->bbox = pdf_to_rect(ctx, obj);
obj = pdf_dict_gets(dict, "Matrix");
if (obj)
form->matrix = pdf_to_matrix(ctx, obj);
else
form->matrix = fz_identity;
form->isolated = 0;
form->knockout = 0;
form->transparency = 0;
obj = pdf_dict_gets(dict, "Group");
if (obj)
{
pdf_obj *attrs = obj;
form->isolated = pdf_to_bool(pdf_dict_gets(attrs, "I"));
form->knockout = pdf_to_bool(pdf_dict_gets(attrs, "K"));
obj = pdf_dict_gets(attrs, "S");
if (pdf_is_name(obj) && !strcmp(pdf_to_name(obj), "Transparency"))
form->transparency = 1;
obj = pdf_dict_gets(attrs, "CS");
if (obj)
{
form->colorspace = pdf_load_colorspace(xref, obj);
if (!form->colorspace)
fz_throw(ctx, "cannot load xobject colorspace");
}
}
form->resources = pdf_dict_gets(dict, "Resources");
if (form->resources)
pdf_keep_obj(form->resources);
fz_try(ctx)
{
form->contents = pdf_load_stream(xref, pdf_to_num(dict), pdf_to_gen(dict));
}
fz_catch(ctx)
{
pdf_remove_item(ctx, pdf_free_xobject_imp, dict);
pdf_drop_xobject(ctx, form);
fz_throw(ctx, "cannot load xobject content stream (%d %d R)", pdf_to_num(dict), pdf_to_gen(dict));
}
form->me = pdf_keep_obj(dict);
return form;
}
static void
gatherimages(int page, pdf_obj *pageref, pdf_obj *pageobj, pdf_obj *dict)
{
int i, n;
n = pdf_dict_len(dict);
for (i = 0; i < n; i++)
{
pdf_obj *imagedict;
pdf_obj *type;
pdf_obj *width;
pdf_obj *height;
pdf_obj *bpc = NULL;
pdf_obj *filter = NULL;
pdf_obj *cs = NULL;
pdf_obj *altcs;
int k;
imagedict = pdf_dict_get_val(dict, i);
if (!pdf_is_dict(imagedict))
{
fz_warn(ctx, "not an image dict (%d %d R)", pdf_to_num(imagedict), pdf_to_gen(imagedict));
continue;
}
type = pdf_dict_gets(imagedict, "Subtype");
if (strcmp(pdf_to_name(type), "Image"))
continue;
filter = pdf_dict_gets(imagedict, "Filter");
altcs = NULL;
cs = pdf_dict_gets(imagedict, "ColorSpace");
if (pdf_is_array(cs))
{
pdf_obj *cses = cs;
cs = pdf_array_get(cses, 0);
if (pdf_is_name(cs) && (!strcmp(pdf_to_name(cs), "DeviceN") || !strcmp(pdf_to_name(cs), "Separation")))
{
altcs = pdf_array_get(cses, 2);
if (pdf_is_array(altcs))
altcs = pdf_array_get(altcs, 0);
}
}
width = pdf_dict_gets(imagedict, "Width");
height = pdf_dict_gets(imagedict, "Height");
bpc = pdf_dict_gets(imagedict, "BitsPerComponent");
for (k = 0; k < images; k++)
if (!pdf_objcmp(image[k].u.image.obj, imagedict))
break;
if (k < images)
continue;
image = fz_resize_array(ctx, image, images+1, sizeof(struct info));
images++;
image[images - 1].page = page;
image[images - 1].pageref = pageref;
image[images - 1].pageobj = pageobj;
image[images - 1].u.image.obj = imagedict;
image[images - 1].u.image.width = width;
image[images - 1].u.image.height = height;
image[images - 1].u.image.bpc = bpc;
image[images - 1].u.image.filter = filter;
image[images - 1].u.image.cs = cs;
image[images - 1].u.image.altcs = altcs;
}
}
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;
}
static pdf_obj *
pdf_lookup_page_loc_imp(pdf_document *doc, pdf_obj *node, int *skip, pdf_obj **parentp, int *indexp)
{
fz_context *ctx = doc->ctx;
pdf_obj *kids, *hit;
int i, len;
kids = pdf_dict_gets(node, "Kids");
len = pdf_array_len(kids);
if (pdf_mark_obj(node))
fz_throw(ctx, FZ_ERROR_GENERIC, "cycle in page tree");
hit = NULL;
fz_var(hit);
fz_try(ctx)
{
for (i = 0; i < len; i++)
{
pdf_obj *kid = pdf_array_get(kids, i);
char *type = pdf_to_name(pdf_dict_gets(kid, "Type"));
if (!strcmp(type, "Page"))
{
if (*skip == 0)
{
if (parentp) *parentp = node;
if (indexp) *indexp = i;
hit = kid;
break;
}
else
{
(*skip)--;
}
}
else if (!strcmp(type, "Pages"))
{
int count = pdf_to_int(pdf_dict_gets(kid, "Count"));
if (*skip < count)
{
hit = pdf_lookup_page_loc_imp(doc, kid, skip, parentp, indexp);
if (hit)
break;
}
else
{
*skip -= count;
}
}
else
{
fz_throw(ctx, FZ_ERROR_GENERIC, "non-page object in page tree");
}
}
}
fz_always(ctx)
{
pdf_unmark_obj(node);
}
fz_catch(ctx)
{
fz_rethrow(ctx);
}
return hit;
}
/*
* Create a filter given a name and param dictionary.
*/
static fz_stream *
build_filter(fz_stream *chain, pdf_document * xref, pdf_obj * f, pdf_obj * p, int num, int gen, pdf_image_params *params)
{
fz_context *ctx = chain->ctx;
char *s = pdf_to_name(f);
int predictor = pdf_to_int(pdf_dict_gets(p, "Predictor"));
int columns = pdf_to_int(pdf_dict_gets(p, "Columns"));
int colors = pdf_to_int(pdf_dict_gets(p, "Colors"));
int bpc = pdf_to_int(pdf_dict_gets(p, "BitsPerComponent"));
if (predictor == 0) predictor = 1;
if (columns == 0) columns = 1;
if (colors == 0) colors = 1;
if (bpc == 0) bpc = 8;
if (!strcmp(s, "ASCIIHexDecode") || !strcmp(s, "AHx"))
return fz_open_ahxd(chain);
else if (!strcmp(s, "ASCII85Decode") || !strcmp(s, "A85"))
return fz_open_a85d(chain);
else if (!strcmp(s, "CCITTFaxDecode") || !strcmp(s, "CCF"))
{
pdf_obj *k = pdf_dict_gets(p, "K");
pdf_obj *eol = pdf_dict_gets(p, "EndOfLine");
pdf_obj *eba = pdf_dict_gets(p, "EncodedByteAlign");
pdf_obj *columns = pdf_dict_gets(p, "Columns");
pdf_obj *rows = pdf_dict_gets(p, "Rows");
pdf_obj *eob = pdf_dict_gets(p, "EndOfBlock");
pdf_obj *bi1 = pdf_dict_gets(p, "BlackIs1");
if (params)
{
/* We will shortstop here */
params->type = PDF_IMAGE_FAX;
params->u.fax.k = (k ? pdf_to_int(k) : 0);
params->u.fax.eol = (eol ? pdf_to_bool(eol) : 0);
params->u.fax.eba = (eba ? pdf_to_bool(eba) : 0);
params->u.fax.columns = (columns ? pdf_to_int(columns) : 1728);
params->u.fax.rows = (rows ? pdf_to_int(rows) : 0);
params->u.fax.eob = (eob ? pdf_to_bool(eob) : 1);
params->u.fax.bi1 = (bi1 ? pdf_to_bool(bi1) : 0);
return chain;
}
return fz_open_faxd(chain,
k ? pdf_to_int(k) : 0,
eol ? pdf_to_bool(eol) : 0,
eba ? pdf_to_bool(eba) : 0,
columns ? pdf_to_int(columns) : 1728,
rows ? pdf_to_int(rows) : 0,
eob ? pdf_to_bool(eob) : 1,
bi1 ? pdf_to_bool(bi1) : 0);
}
else if (!strcmp(s, "DCTDecode") || !strcmp(s, "DCT"))
{
pdf_obj *ct = pdf_dict_gets(p, "ColorTransform");
if (params)
{
/* We will shortstop here */
params->type = PDF_IMAGE_JPEG;
params->u.jpeg.ct = (ct ? pdf_to_int(ct) : -1);
return chain;
}
return fz_open_dctd(chain, ct ? pdf_to_int(ct) : -1);
}
else if (!strcmp(s, "RunLengthDecode") || !strcmp(s, "RL"))
{
if (params)
{
/* We will shortstop here */
params->type = PDF_IMAGE_RLD;
return chain;
}
return fz_open_rld(chain);
}
else if (!strcmp(s, "FlateDecode") || !strcmp(s, "Fl"))
{
if (params)
{
/* We will shortstop here */
params->type = PDF_IMAGE_FLATE;
params->u.flate.predictor = predictor;
params->u.flate.columns = columns;
params->u.flate.colors = colors;
params->u.flate.bpc = bpc;
return chain;
}
chain = fz_open_flated(chain);
if (predictor > 1)
chain = fz_open_predict(chain, predictor, columns, colors, bpc);
return chain;
}
else if (!strcmp(s, "LZWDecode") || !strcmp(s, "LZW"))
{
pdf_obj *ec = pdf_dict_gets(p, "EarlyChange");
if (params)
{
/* We will shortstop here */
params->type = PDF_IMAGE_LZW;
params->u.lzw.predictor = predictor;
params->u.lzw.columns = columns;
params->u.lzw.colors = colors;
params->u.lzw.bpc = bpc;
params->u.lzw.ec = (ec ? pdf_to_int(ec) : 1);
return chain;
}
chain = fz_open_lzwd(chain, ec ? pdf_to_int(ec) : 1);
if (predictor > 1)
chain = fz_open_predict(chain, predictor, columns, colors, bpc);
return chain;
}
else if (!strcmp(s, "JBIG2Decode"))
{
fz_buffer *globals = NULL;
pdf_obj *obj = pdf_dict_gets(p, "JBIG2Globals");
if (obj)
globals = pdf_load_stream(xref, pdf_to_num(obj), pdf_to_gen(obj));
/* fz_open_jbig2d takes possession of globals */
return fz_open_jbig2d(chain, globals);
}
else if (!strcmp(s, "JPXDecode"))
return chain; /* JPX decoding is special cased in the image loading code */
else if (!strcmp(s, "Crypt"))
{
pdf_obj *name;
if (!xref->crypt)
{
fz_warn(ctx, "crypt filter in unencrypted document");
return chain;
}
name = pdf_dict_gets(p, "Name");
if (pdf_is_name(name))
return pdf_open_crypt_with_filter(chain, xref->crypt, pdf_to_name(name), num, gen);
return chain;
}
fz_warn(ctx, "unknown filter name (%s)", s);
return chain;
}
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;
}
static void check_allowed_subtypes(fz_context *ctx, pdf_annot *annot, pdf_obj *property, pdf_obj **allowed)
{
pdf_obj *subtype = pdf_dict_get(ctx, annot->obj, PDF_NAME(Subtype));
if (!is_allowed_subtype(ctx, annot, property, allowed))
fz_throw(ctx, FZ_ERROR_GENERIC, "%s annotations have no %s property", pdf_to_name(ctx, subtype), pdf_to_name(ctx, property));
}
// just copy one of the resource sub-entries (e.g. /Font)
static int copy_and_rename_resource(fz_context *dest_ctx, pdf_obj *dest,
fz_context *src_ctx, pdf_obj *src, char *prefix, struct put_info *info)
{
char new_name[64]; /* this buffer is big enough up to hold all digits for two 16-bit numbers */
int i;
for(i = 0; i < pdf_dict_len(src_ctx, src); i++) {
pdf_obj *src_key = pdf_dict_get_key(src_ctx, src, i);
pdf_obj *src_val = pdf_dict_get_val(src_ctx, src, i);
if(!pdf_is_name(src_ctx, src_key)) {
return(2);
}
/* if this is an inline resource, just copy this object into the new
resource dict */
if(!pdf_is_indirect(src_ctx, src_val)) {
if(snprintf(new_name, sizeof(new_name) / sizeof(new_name[0]),
"%sinline_%d", prefix, info->next_inline_id++) >= sizeof(new_name) / sizeof(new_name[0]))
return(1); // not enough space
pdf_obj *new_res = copy_unassigned_object_continue(dest_ctx,
info->dest_doc, src_ctx, info->src_doc, src_val, &info->new_ids);
//pdf_obj *new_res = pdf_new_dict(dest_ctx, info->dest_doc, 10);
printf("dump it...\n");
pdf_fprint_obj(dest_ctx, stdout, new_res, 0);
/* now reference this new object in the resource object of this sheet */
pdf_obj *dest_key = pdf_new_name(dest_ctx, info->dest_doc, new_name);
pdf_dict_put(dest_ctx, dest, dest_key, new_res);
pdf_drop_obj(dest_ctx, dest_key);
pdf_drop_obj(dest_ctx, new_res);
} else {
/* The new name of resource objects is always the num/gen of the
referenced object in the src-file. Thus we can check by that name
if the object was already referenced by another page of this sheet. */
if(snprintf(new_name, sizeof(new_name) / sizeof(new_name[0]),
"%s%d_%d", prefix, pdf_to_num(dest_ctx, src_val), pdf_to_gen(dest_ctx, src_val)) >=
sizeof(new_name) / sizeof(new_name[0]))
return(1); // not enough space
if(pdf_dict_gets(dest_ctx, dest, new_name) == NULL) {
/* if this resource is not inlined and not already in the resource-dict
of the current sheet... */
/* ...copy the referenced resource to the new document!
If this object has copied already (for another sheet in dest_doc),
copy_object_continue() will do nothing */
pdf_obj *new_res = copy_object_continue(dest_ctx, info->dest_doc,
src_ctx, info->src_doc, src_val, &info->new_ids);
/* now reference this new object in the resource object of this sheet */
pdf_obj *dest_key = pdf_new_name(dest_ctx, info->dest_doc, new_name);
pdf_dict_put(dest_ctx, dest, dest_key, new_res);
pdf_drop_obj(dest_ctx, dest_key);
pdf_drop_obj(dest_ctx, new_res);
}
}
/* even if it was used on another sheet or on this sheet, add it to the
rename-dict for this sheet! Because it could have different names
on different source-pages */
pdf_obj *rename_key = pdf_new_name(dest_ctx, info->dest_doc, pdf_to_name(dest_ctx, src_key));
pdf_obj *rename_val = pdf_new_name(dest_ctx, info->dest_doc, new_name);
pdf_dict_put(dest_ctx, info->rename_dict, rename_key, rename_val);
pdf_drop_obj(dest_ctx, rename_key);
pdf_drop_obj(dest_ctx, rename_val);
}
return(0);
}
char *
pdf_parse_file_spec(fz_context *ctx, pdf_document *doc, pdf_obj *file_spec, pdf_obj *dest)
{
pdf_obj *filename=NULL;
char *path = NULL;
char *uri = NULL;
char buf[256];
size_t n;
if (pdf_is_string(ctx, file_spec))
filename = file_spec;
if (pdf_is_dict(ctx, file_spec)) {
#if defined(_WIN32) || defined(_WIN64)
filename = pdf_dict_get(ctx, file_spec, PDF_NAME_DOS);
#else
filename = pdf_dict_get(ctx, file_spec, PDF_NAME_Unix);
#endif
if (!filename)
filename = pdf_dict_geta(ctx, file_spec, PDF_NAME_UF, PDF_NAME_F);
}
if (!pdf_is_string(ctx, filename))
{
fz_warn(ctx, "cannot parse file specification");
return NULL;
}
path = pdf_to_utf8(ctx, filename);
#if defined(_WIN32) || defined(_WIN64)
if (strcmp(pdf_to_name(ctx, pdf_dict_gets(ctx, file_spec, "FS")), "URL") != 0)
{
/* move the file name into the expected place and use the expected path separator */
char *c;
if (path[0] == '/' && (('A' <= path[1] && path[1] <= 'Z') || ('a' <= path[1] && path[1] <= 'z')) && path[2] == '/')
{
path[0] = path[1];
path[1] = ':';
}
for (c = path; *c; c++)
{
if (*c == '/')
*c = '\\';
}
}
#endif
if (pdf_is_array(ctx, dest))
fz_snprintf(buf, sizeof buf, "#page=%d", pdf_to_int(ctx, pdf_array_get(ctx, dest, 0)) + 1);
else if (pdf_is_name(ctx, dest))
fz_snprintf(buf, sizeof buf, "#%s", pdf_to_name(ctx, dest));
else if (pdf_is_string(ctx, dest))
fz_snprintf(buf, sizeof buf, "#%s", pdf_to_str_buf(ctx, dest));
else
buf[0] = 0;
n = 7 + strlen(path) + strlen(buf) + 1;
uri = fz_malloc(ctx, n);
fz_strlcpy(uri, "file://", n);
fz_strlcat(uri, path, n);
fz_strlcat(uri, buf, n);
fz_free(ctx, path);
return uri;
}
static pdf_obj *
pdf_lookup_page_loc_imp(pdf_document *doc, pdf_obj *node, int *skip, pdf_obj **parentp, int *indexp)
{
fz_context *ctx = doc->ctx;
pdf_obj *kids;
pdf_obj *hit = NULL;
int i, len;
pdf_obj *local_stack[LOCAL_STACK_SIZE];
pdf_obj **stack = &local_stack[0];
int stack_max = LOCAL_STACK_SIZE;
int stack_len = 0;
fz_var(hit);
fz_var(stack);
fz_var(stack_len);
fz_var(stack_max);
fz_try(ctx)
{
do
{
kids = pdf_dict_gets(node, "Kids");
len = pdf_array_len(kids);
if (len == 0)
fz_throw(ctx, FZ_ERROR_GENERIC, "Malformed pages tree");
/* Every node we need to unmark goes into the stack */
if (stack_len == stack_max)
{
if (stack == &local_stack[0])
{
stack = fz_malloc_array(ctx, stack_max * 2, sizeof(*stack));
memcpy(stack, &local_stack[0], stack_max * sizeof(*stack));
}
else
stack = fz_resize_array(ctx, stack, stack_max * 2, sizeof(*stack));
stack_max *= 2;
}
stack[stack_len++] = node;
if (pdf_mark_obj(node))
fz_throw(ctx, FZ_ERROR_GENERIC, "cycle in page tree");
for (i = 0; i < len; i++)
{
pdf_obj *kid = pdf_array_get(kids, i);
char *type = pdf_to_name(pdf_dict_gets(kid, "Type"));
if (!strcmp(type, "Page") || (!*type && pdf_dict_gets(kid, "MediaBox")))
{
if (*skip == 0)
{
if (parentp) *parentp = node;
if (indexp) *indexp = i;
hit = kid;
break;
}
else
{
(*skip)--;
}
}
else if (!strcmp(type, "Pages") || (!*type && pdf_dict_gets(kid, "Kids")))
{
int count = pdf_to_int(pdf_dict_gets(kid, "Count"));
if (*skip < count)
{
node = kid;
break;
}
else
{
*skip -= count;
}
}
else
{
fz_throw(ctx, FZ_ERROR_GENERIC, "non-page object in page tree (%s)", type);
}
}
}
while (hit == NULL);
}
fz_always(ctx)
{
for (i = stack_len; i > 0; i--)
pdf_unmark_obj(stack[i-1]);
if (stack != &local_stack[0])
fz_free(ctx, stack);
}
fz_catch(ctx)
{
fz_rethrow(ctx);
}
return hit;
}
pdf_obj *
pdf_parse_dict(pdf_document *xref, fz_stream *file, pdf_lexbuf *buf)
{
pdf_obj *dict;
pdf_obj *key = NULL;
pdf_obj *val = NULL;
int tok;
int a, b;
fz_context *ctx = file->ctx;
dict = pdf_new_dict(ctx, 8);
fz_var(key);
fz_var(val);
fz_try(ctx)
{
while (1)
{
tok = pdf_lex(file, buf);
skip:
if (tok == PDF_TOK_CLOSE_DICT)
break;
/* for BI .. ID .. EI in content streams */
if (tok == PDF_TOK_KEYWORD && !strcmp(buf->scratch, "ID"))
break;
if (tok != PDF_TOK_NAME)
fz_throw(ctx, "invalid key in dict");
key = fz_new_name(ctx, buf->scratch);
tok = pdf_lex(file, buf);
switch (tok)
{
case PDF_TOK_OPEN_ARRAY:
/* cf. http://code.google.com/p/sumatrapdf/issues/detail?id=1643 */
fz_try(ctx)
{
val = pdf_parse_array(xref, file, buf);
}
fz_catch(ctx)
{
fz_warn(ctx, "ignoring broken array for '%s'", pdf_to_name(key));
pdf_drop_obj(key);
val = key = NULL;
do
tok = pdf_lex(file, buf);
while (tok != PDF_TOK_CLOSE_DICT && tok != PDF_TOK_CLOSE_ARRAY &&
tok != PDF_TOK_EOF && tok != PDF_TOK_OPEN_ARRAY && tok != PDF_TOK_OPEN_DICT);
if (tok == PDF_TOK_CLOSE_DICT)
goto skip;
if (tok == PDF_TOK_CLOSE_ARRAY)
continue;
fz_throw(ctx, "cannot make sense of broken array after all");
}
break;
case PDF_TOK_OPEN_DICT:
val = pdf_parse_dict(xref, file, buf);
break;
case PDF_TOK_NAME:
val = fz_new_name(ctx, buf->scratch);
break;
case PDF_TOK_REAL:
val = pdf_new_real(ctx, buf->f);
break;
case PDF_TOK_STRING:
val = pdf_new_string(ctx, buf->scratch, buf->len);
break;
case PDF_TOK_TRUE:
val = pdf_new_bool(ctx, 1);
break;
case PDF_TOK_FALSE:
val = pdf_new_bool(ctx, 0);
break;
case PDF_TOK_NULL:
val = pdf_new_null(ctx);
break;
case PDF_TOK_INT:
/* 64-bit to allow for numbers > INT_MAX and overflow */
a = buf->i;
tok = pdf_lex(file, buf);
if (tok == PDF_TOK_CLOSE_DICT || tok == PDF_TOK_NAME ||
(tok == PDF_TOK_KEYWORD && !strcmp(buf->scratch, "ID")))
{
val = pdf_new_int(ctx, a);
fz_dict_put(dict, key, val);
pdf_drop_obj(val);
val = NULL;
pdf_drop_obj(key);
key = NULL;
goto skip;
}
if (tok == PDF_TOK_INT)
{
b = buf->i;
tok = pdf_lex(file, buf);
if (tok == PDF_TOK_R)
{
val = pdf_new_indirect(ctx, a, b, xref);
break;
}
}
fz_throw(ctx, "invalid indirect reference in dict");
default:
fz_throw(ctx, "unknown token in dict");
}
fz_dict_put(dict, key, val);
pdf_drop_obj(val);
val = NULL;
pdf_drop_obj(key);
key = NULL;
}
}
fz_catch(ctx)
{
pdf_drop_obj(dict);
pdf_drop_obj(key);
pdf_drop_obj(val);
fz_throw(ctx, "cannot parse dict");
}
return dict;
}
pdf_page *
pdf_load_page_by_obj(pdf_document *doc, int number, pdf_obj *pageref)
{
fz_context *ctx = doc->ctx;
pdf_page *page;
pdf_annot *annot;
pdf_obj *pageobj, *obj;
fz_rect mediabox, cropbox, realbox;
float userunit;
fz_matrix mat;
/* SumatraPDF: allow replacing potentially slow pdf_lookup_page_obj */
pageobj = pdf_resolve_indirect(pageref);
page = fz_malloc_struct(ctx, pdf_page);
page->resources = NULL;
page->contents = NULL;
page->transparency = 0;
page->links = NULL;
page->annots = NULL;
page->annot_tailp = &page->annots;
page->deleted_annots = NULL;
page->tmp_annots = NULL;
page->me = pdf_keep_obj(pageobj);
page->incomplete = 0;
obj = pdf_dict_gets(pageobj, "UserUnit");
if (pdf_is_real(obj))
userunit = pdf_to_real(obj);
else
userunit = 1;
pdf_to_rect(ctx, pdf_lookup_inherited_page_item(doc, pageobj, "MediaBox"), &mediabox);
if (fz_is_empty_rect(&mediabox))
{
fz_warn(ctx, "cannot find page size for page %d", number + 1);
mediabox.x0 = 0;
mediabox.y0 = 0;
mediabox.x1 = 612;
mediabox.y1 = 792;
}
pdf_to_rect(ctx, pdf_lookup_inherited_page_item(doc, pageobj, "CropBox"), &cropbox);
if (!fz_is_empty_rect(&cropbox))
fz_intersect_rect(&mediabox, &cropbox);
page->mediabox.x0 = fz_min(mediabox.x0, mediabox.x1) * userunit;
page->mediabox.y0 = fz_min(mediabox.y0, mediabox.y1) * userunit;
page->mediabox.x1 = fz_max(mediabox.x0, mediabox.x1) * userunit;
page->mediabox.y1 = fz_max(mediabox.y0, mediabox.y1) * userunit;
if (page->mediabox.x1 - page->mediabox.x0 < 1 || page->mediabox.y1 - page->mediabox.y0 < 1)
{
fz_warn(ctx, "invalid page size in page %d", number + 1);
page->mediabox = fz_unit_rect;
}
page->rotate = pdf_to_int(pdf_lookup_inherited_page_item(doc, pageobj, "Rotate"));
/* Snap page->rotate to 0, 90, 180 or 270 */
if (page->rotate < 0)
page->rotate = 360 - ((-page->rotate) % 360);
if (page->rotate >= 360)
page->rotate = page->rotate % 360;
page->rotate = 90*((page->rotate + 45)/90);
if (page->rotate > 360)
page->rotate = 0;
fz_pre_rotate(fz_scale(&page->ctm, 1, -1), -page->rotate);
realbox = page->mediabox;
fz_transform_rect(&realbox, &page->ctm);
fz_pre_scale(fz_translate(&mat, -realbox.x0, -realbox.y0), userunit, userunit);
fz_concat(&page->ctm, &page->ctm, &mat);
fz_try(ctx)
{
obj = pdf_dict_gets(pageobj, "Annots");
if (obj)
{
page->links = pdf_load_link_annots(doc, obj, &page->ctm);
pdf_load_annots(doc, page, obj);
}
}
fz_catch(ctx)
{
if (fz_caught(ctx) != FZ_ERROR_TRYLATER)
/* SumatraPDF: ignore annotations in case of unexpected errors */
fz_warn(ctx, "unexpectedly failed to load page annotations");
page->incomplete |= PDF_PAGE_INCOMPLETE_ANNOTS;
}
page->duration = pdf_to_real(pdf_dict_gets(pageobj, "Dur"));
obj = pdf_dict_gets(pageobj, "Trans");
page->transition_present = (obj != NULL);
if (obj)
{
pdf_load_transition(doc, page, obj);
}
// TODO: inherit
page->resources = pdf_lookup_inherited_page_item(doc, pageobj, "Resources");
if (page->resources)
pdf_keep_obj(page->resources);
obj = pdf_dict_gets(pageobj, "Contents");
fz_try(ctx)
{
page->contents = pdf_keep_obj(obj);
if (pdf_resources_use_blending(doc, page->resources))
page->transparency = 1;
/* cf. http://code.google.com/p/sumatrapdf/issues/detail?id=2107 */
else if (!strcmp(pdf_to_name(pdf_dict_getp(pageobj, "Group/S")), "Transparency"))
page->transparency = 1;
for (annot = page->annots; annot && !page->transparency; annot = annot->next)
if (annot->ap && pdf_resources_use_blending(doc, annot->ap->resources))
page->transparency = 1;
}
fz_catch(ctx)
{
if (fz_caught(ctx) != FZ_ERROR_TRYLATER)
{
pdf_free_page(doc, page);
fz_rethrow_message(ctx, "cannot load page %d contents (%d 0 R)", number + 1, pdf_to_num(pageref));
}
page->incomplete |= PDF_PAGE_INCOMPLETE_CONTENTS;
}
return page;
}
static pdf_font_desc *
pdf_load_simple_font(pdf_document *xref, pdf_obj *dict)
{
pdf_obj *descriptor;
pdf_obj *encoding;
pdf_obj *widths;
unsigned short *etable = NULL;
pdf_font_desc *fontdesc = NULL;
char *subtype;
FT_Face face;
FT_CharMap cmap;
int symbolic;
int kind;
char *basefont;
char *estrings[256];
char ebuffer[256][32];
int i, k, n;
int fterr;
fz_context *ctx = xref->ctx;
fz_var(fontdesc);
fz_var(etable);
basefont = pdf_to_name(pdf_dict_gets(dict, "BaseFont"));
/* Load font file */
fz_try(ctx)
{
fontdesc = pdf_new_font_desc(ctx);
descriptor = pdf_dict_gets(dict, "FontDescriptor");
if (descriptor)
pdf_load_font_descriptor(fontdesc, xref, descriptor, NULL, basefont);
else
pdf_load_builtin_font(ctx, fontdesc, basefont);
/* Some chinese documents mistakenly consider WinAnsiEncoding to be codepage 936 */
if (descriptor && pdf_is_string(pdf_dict_gets(descriptor, "FontName")) &&
!pdf_dict_gets(dict, "ToUnicode") &&
!strcmp(pdf_to_name(pdf_dict_gets(dict, "Encoding")), "WinAnsiEncoding") &&
pdf_to_int(pdf_dict_gets(descriptor, "Flags")) == 4)
{
char *cp936fonts[] = {
"\xCB\xCE\xCC\xE5", "SimSun,Regular",
"\xBA\xDA\xCC\xE5", "SimHei,Regular",
"\xBF\xAC\xCC\xE5_GB2312", "SimKai,Regular",
"\xB7\xC2\xCB\xCE_GB2312", "SimFang,Regular",
"\xC1\xA5\xCA\xE9", "SimLi,Regular",
NULL
};
for (i = 0; cp936fonts[i]; i += 2)
if (!strcmp(basefont, cp936fonts[i]))
break;
if (cp936fonts[i])
{
fz_warn(ctx, "workaround for S22PDF lying about chinese font encodings");
pdf_drop_font(ctx, fontdesc);
fontdesc = pdf_new_font_desc(ctx);
pdf_load_font_descriptor(fontdesc, xref, descriptor, "Adobe-GB1", cp936fonts[i+1]);
fontdesc->encoding = pdf_load_system_cmap(ctx, "GBK-EUC-H");
fontdesc->to_unicode = pdf_load_system_cmap(ctx, "Adobe-GB1-UCS2");
fontdesc->to_ttf_cmap = pdf_load_system_cmap(ctx, "Adobe-GB1-UCS2");
face = fontdesc->font->ft_face;
kind = ft_kind(face);
goto skip_encoding;
}
}
face = fontdesc->font->ft_face;
kind = ft_kind(face);
/* Encoding */
symbolic = fontdesc->flags & 4;
if (face->num_charmaps > 0)
cmap = face->charmaps[0];
else
cmap = NULL;
for (i = 0; i < face->num_charmaps; i++)
{
FT_CharMap test = face->charmaps[i];
if (kind == TYPE1)
{
if (test->platform_id == 7)
cmap = test;
}
if (kind == TRUETYPE)
{
if (test->platform_id == 1 && test->encoding_id == 0)
cmap = test;
if (test->platform_id == 3 && test->encoding_id == 1)
cmap = test;
if (symbolic && test->platform_id == 3 && test->encoding_id == 0)
cmap = test;
}
}
if (cmap)
{
fterr = FT_Set_Charmap(face, cmap);
if (fterr)
fz_warn(ctx, "freetype could not set cmap: %s", ft_error_string(fterr));
}
else
fz_warn(ctx, "freetype could not find any cmaps");
etable = fz_malloc_array(ctx, 256, sizeof(unsigned short));
fontdesc->size += 256 * sizeof(unsigned short);
for (i = 0; i < 256; i++)
{
estrings[i] = NULL;
etable[i] = 0;
}
encoding = pdf_dict_gets(dict, "Encoding");
if (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));
else if (!fontdesc->is_embedded && !symbolic)
pdf_load_encoding(estrings, "StandardEncoding");
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);
}
}
}
}
/* start with the builtin encoding */
for (i = 0; i < 256; i++)
etable[i] = ft_char_index(face, i);
fz_lock(ctx, FZ_LOCK_FREETYPE);
/* built-in and substitute fonts may be a different type than what the document expects */
subtype = pdf_to_name(pdf_dict_gets(dict, "Subtype"));
if (!strcmp(subtype, "Type1"))
kind = TYPE1;
else if (!strcmp(subtype, "MMType1"))
kind = TYPE1;
else if (!strcmp(subtype, "TrueType"))
kind = TRUETYPE;
else if (!strcmp(subtype, "CIDFontType0"))
kind = TYPE1;
else if (!strcmp(subtype, "CIDFontType2"))
kind = TRUETYPE;
/* encode by glyph name where we can */
if (kind == TYPE1)
{
for (i = 0; i < 256; i++)
{
if (estrings[i])
{
etable[i] = FT_Get_Name_Index(face, estrings[i]);
if (etable[i] == 0)
{
int aglcode = pdf_lookup_agl(estrings[i]);
const char **dupnames = pdf_lookup_agl_duplicates(aglcode);
while (*dupnames)
{
etable[i] = FT_Get_Name_Index(face, (char*)*dupnames);
if (etable[i])
break;
dupnames++;
}
}
}
}
}
/* encode by glyph name where we can */
if (kind == TRUETYPE)
{
/* Unicode cmap */
if (!symbolic && face->charmap && face->charmap->platform_id == 3)
{
for (i = 0; i < 256; i++)
{
if (estrings[i])
{
int aglcode = pdf_lookup_agl(estrings[i]);
if (!aglcode)
etable[i] = FT_Get_Name_Index(face, estrings[i]);
else
etable[i] = ft_char_index(face, aglcode);
}
}
}
/* MacRoman cmap */
else if (!symbolic && face->charmap && face->charmap->platform_id == 1)
{
for (i = 0; i < 256; i++)
{
if (estrings[i])
{
k = lookup_mre_code(estrings[i]);
if (k <= 0)
etable[i] = FT_Get_Name_Index(face, estrings[i]);
else
etable[i] = ft_char_index(face, k);
}
}
}
/* Symbolic cmap */
else if (!face->charmap || face->charmap->encoding != FT_ENCODING_MS_SYMBOL)
{
for (i = 0; i < 256; i++)
{
if (estrings[i])
{
etable[i] = FT_Get_Name_Index(face, estrings[i]);
if (etable[i] == 0)
etable[i] = ft_char_index(face, i);
}
}
}
}
/* try to reverse the glyph names from the builtin encoding */
for (i = 0; i < 256; i++)
{
if (etable[i] && !estrings[i])
{
if (FT_HAS_GLYPH_NAMES(face))
{
fterr = FT_Get_Glyph_Name(face, etable[i], ebuffer[i], 32);
if (fterr)
fz_warn(ctx, "freetype get glyph name (gid %d): %s", etable[i], ft_error_string(fterr));
if (ebuffer[i][0])
estrings[i] = ebuffer[i];
}
else
{
estrings[i] = (char*) pdf_win_ansi[i]; /* discard const */
}
}
}
/* symbolic Type 1 fonts with an implicit encoding and non-standard glyph names */
if (kind == TYPE1 && symbolic)
{
for (i = 0; i < 256; i++)
if (etable[i] && estrings[i] && !pdf_lookup_agl(estrings[i]))
estrings[i] = (char*) pdf_standard[i];
}
fz_unlock(ctx, FZ_LOCK_FREETYPE);
fontdesc->encoding = pdf_new_identity_cmap(ctx, 0, 1);
fontdesc->size += pdf_cmap_size(ctx, fontdesc->encoding);
fontdesc->cid_to_gid_len = 256;
fontdesc->cid_to_gid = etable;
fz_try(ctx)
{
pdf_load_to_unicode(xref, fontdesc, estrings, NULL, pdf_dict_gets(dict, "ToUnicode"));
}
fz_catch(ctx)
{
fz_warn(ctx, "cannot load ToUnicode CMap");
}
skip_encoding:
/* Widths */
pdf_set_default_hmtx(ctx, fontdesc, fontdesc->missing_width);
widths = pdf_dict_gets(dict, "Widths");
if (widths)
{
int first, last;
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;
for (i = 0; i < last - first + 1; i++)
{
int wid = pdf_to_int(pdf_array_get(widths, i));
pdf_add_hmtx(ctx, fontdesc, i + first, i + first, wid);
}
}
else
{
fz_lock(ctx, FZ_LOCK_FREETYPE);
fterr = FT_Set_Char_Size(face, 1000, 1000, 72, 72);
if (fterr)
fz_warn(ctx, "freetype set character size: %s", ft_error_string(fterr));
for (i = 0; i < 256; i++)
{
pdf_add_hmtx(ctx, fontdesc, i, i, ft_width(ctx, fontdesc, i));
}
fz_unlock(ctx, FZ_LOCK_FREETYPE);
}
pdf_end_hmtx(ctx, fontdesc);
}
fz_catch(ctx)
{
if (fontdesc && etable != fontdesc->cid_to_gid)
fz_free(ctx, etable);
pdf_drop_font(ctx, fontdesc);
fz_throw(ctx, "cannot load simple font (%d %d R)", pdf_to_num(dict), pdf_to_gen(dict));
}
return fontdesc;
}
static int keyvalcmp(const void *ap, const void *bp)
{
const struct keyval *a = ap;
const struct keyval *b = bp;
return strcmp(pdf_to_name(a->k), pdf_to_name(b->k));
}
static void savefont(pdf_obj *dict, int num)
{
char namebuf[1024];
char *subtype;
fz_buffer *buf;
pdf_obj *stream = NULL;
pdf_obj *obj;
char *ext = "";
FILE *f;
char *fontname = "font";
int n, len;
unsigned char *data;
obj = pdf_dict_gets(dict, "FontName");
if (obj)
fontname = pdf_to_name(obj);
obj = pdf_dict_gets(dict, "FontFile");
if (obj)
{
stream = obj;
ext = "pfa";
}
obj = pdf_dict_gets(dict, "FontFile2");
if (obj)
{
stream = obj;
ext = "ttf";
}
obj = pdf_dict_gets(dict, "FontFile3");
if (obj)
{
stream = obj;
obj = pdf_dict_gets(obj, "Subtype");
if (obj && !pdf_is_name(obj))
fz_throw(ctx, FZ_ERROR_GENERIC, "invalid font descriptor subtype");
subtype = pdf_to_name(obj);
if (!strcmp(subtype, "Type1C"))
ext = "cff";
else if (!strcmp(subtype, "CIDFontType0C"))
ext = "cid";
else if (!strcmp(subtype, "OpenType"))
ext = "otf";
else
fz_throw(ctx, FZ_ERROR_GENERIC, "unhandled font type '%s'", subtype);
}
if (!stream)
{
fz_warn(ctx, "unhandled font type");
return;
}
buf = pdf_load_stream(doc, pdf_to_num(stream), pdf_to_gen(stream));
snprintf(namebuf, sizeof(namebuf), "%s-%04d.%s", fontname, num, ext);
printf("extracting font %s\n", namebuf);
f = fopen(namebuf, "wb");
if (!f)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot create font file");
len = fz_buffer_storage(ctx, buf, &data);
n = fwrite(data, 1, len, f);
if (n < len)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot write font file");
if (fclose(f) < 0)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot close font file");
fz_drop_buffer(ctx, buf);
}
static void
printinfo(char *filename, int show, int page)
{
int i;
int j;
#define PAGE_FMT "\t% 5d (% 7d %1d R): "
if (show & DIMENSIONS && dims > 0)
{
printf("Mediaboxes (%d):\n", dims);
for (i = 0; i < dims; i++)
{
printf(PAGE_FMT "[ %g %g %g %g ]\n",
dim[i].page,
pdf_to_num(dim[i].pageref), pdf_to_gen(dim[i].pageref),
dim[i].u.dim.bbox->x0,
dim[i].u.dim.bbox->y0,
dim[i].u.dim.bbox->x1,
dim[i].u.dim.bbox->y1);
}
printf("\n");
}
if (show & FONTS && fonts > 0)
{
printf("Fonts (%d):\n", fonts);
for (i = 0; i < fonts; i++)
{
printf(PAGE_FMT "%s '%s' (%d %d R)\n",
font[i].page,
pdf_to_num(font[i].pageref), pdf_to_gen(font[i].pageref),
pdf_to_name(font[i].u.font.subtype),
pdf_to_name(font[i].u.font.name),
pdf_to_num(font[i].u.font.obj), pdf_to_gen(font[i].u.font.obj));
}
printf("\n");
}
if (show & IMAGES && images > 0)
{
printf("Images (%d):\n", images);
for (i = 0; i < images; i++)
{
char *cs = NULL;
char *altcs = NULL;
printf(PAGE_FMT "[ ",
image[i].page,
pdf_to_num(image[i].pageref), pdf_to_gen(image[i].pageref));
if (pdf_is_array(image[i].u.image.filter))
{
int n = pdf_array_len(image[i].u.image.filter);
for (j = 0; j < n; j++)
{
pdf_obj *obj = pdf_array_get(image[i].u.image.filter, j);
char *filter = fz_strdup(ctx, pdf_to_name(obj));
if (strstr(filter, "Decode"))
*(strstr(filter, "Decode")) = '\0';
printf("%s%s",
filter,
j == pdf_array_len(image[i].u.image.filter) - 1 ? "" : " ");
fz_free(ctx, filter);
}
}
else if (image[i].u.image.filter)
{
pdf_obj *obj = image[i].u.image.filter;
char *filter = fz_strdup(ctx, pdf_to_name(obj));
if (strstr(filter, "Decode"))
*(strstr(filter, "Decode")) = '\0';
printf("%s", filter);
fz_free(ctx, filter);
}
else
printf("Raw");
if (image[i].u.image.cs)
{
cs = fz_strdup(ctx, pdf_to_name(image[i].u.image.cs));
if (!strncmp(cs, "Device", 6))
{
int len = strlen(cs + 6);
memmove(cs + 3, cs + 6, len + 1);
cs[3 + len + 1] = '\0';
}
if (strstr(cs, "ICC"))
fz_strlcpy(cs, "ICC", 4);
if (strstr(cs, "Indexed"))
fz_strlcpy(cs, "Idx", 4);
if (strstr(cs, "Pattern"))
fz_strlcpy(cs, "Pat", 4);
if (strstr(cs, "Separation"))
fz_strlcpy(cs, "Sep", 4);
}
if (image[i].u.image.altcs)
{
altcs = fz_strdup(ctx, pdf_to_name(image[i].u.image.altcs));
if (!strncmp(altcs, "Device", 6))
{
int len = strlen(altcs + 6);
memmove(altcs + 3, altcs + 6, len + 1);
altcs[3 + len + 1] = '\0';
}
if (strstr(altcs, "ICC"))
fz_strlcpy(altcs, "ICC", 4);
if (strstr(altcs, "Indexed"))
fz_strlcpy(altcs, "Idx", 4);
if (strstr(altcs, "Pattern"))
fz_strlcpy(altcs, "Pat", 4);
if (strstr(altcs, "Separation"))
fz_strlcpy(altcs, "Sep", 4);
}
printf(" ] %dx%d %dbpc %s%s%s (%d %d R)\n",
pdf_to_int(image[i].u.image.width),
pdf_to_int(image[i].u.image.height),
image[i].u.image.bpc ? pdf_to_int(image[i].u.image.bpc) : 1,
image[i].u.image.cs ? cs : "ImageMask",
image[i].u.image.altcs ? " " : "",
image[i].u.image.altcs ? altcs : "",
pdf_to_num(image[i].u.image.obj), pdf_to_gen(image[i].u.image.obj));
fz_free(ctx, cs);
fz_free(ctx, altcs);
}
printf("\n");
}
if (show & SHADINGS && shadings > 0)
{
printf("Shading patterns (%d):\n", shadings);
for (i = 0; i < shadings; i++)
{
char *shadingtype[] =
{
"",
"Function",
"Axial",
"Radial",
"Triangle mesh",
"Lattice",
"Coons patch",
"Tensor patch",
};
printf(PAGE_FMT "%s (%d %d R)\n",
shading[i].page,
pdf_to_num(shading[i].pageref), pdf_to_gen(shading[i].pageref),
shadingtype[pdf_to_int(shading[i].u.shading.type)],
pdf_to_num(shading[i].u.shading.obj), pdf_to_gen(shading[i].u.shading.obj));
}
printf("\n");
}
if (show & PATTERNS && patterns > 0)
{
printf("Patterns (%d):\n", patterns);
for (i = 0; i < patterns; i++)
{
if (pdf_to_int(pattern[i].u.pattern.type) == 1)
{
char *painttype[] =
{
"",
"Colored",
"Uncolored",
};
char *tilingtype[] =
{
"",
"Constant",
"No distortion",
"Constant/fast tiling",
};
printf(PAGE_FMT "Tiling %s %s (%d %d R)\n",
pattern[i].page,
pdf_to_num(pattern[i].pageref), pdf_to_gen(pattern[i].pageref),
painttype[pdf_to_int(pattern[i].u.pattern.paint)],
tilingtype[pdf_to_int(pattern[i].u.pattern.tiling)],
pdf_to_num(pattern[i].u.pattern.obj), pdf_to_gen(pattern[i].u.pattern.obj));
}
else
{
printf(PAGE_FMT "Shading %d %d R (%d %d R)\n",
pattern[i].page,
pdf_to_num(pattern[i].pageref), pdf_to_gen(pattern[i].pageref),
pdf_to_num(pattern[i].u.pattern.shading), pdf_to_gen(pattern[i].u.pattern.shading),
pdf_to_num(pattern[i].u.pattern.obj), pdf_to_gen(pattern[i].u.pattern.obj));
}
}
printf("\n");
}
if (show & XOBJS && forms > 0)
{
printf("Form xobjects (%d):\n", forms);
for (i = 0; i < forms; i++)
{
printf(PAGE_FMT "Form%s%s%s%s (%d %d R)\n",
form[i].page,
pdf_to_num(form[i].pageref), pdf_to_gen(form[i].pageref),
form[i].u.form.groupsubtype ? " " : "",
form[i].u.form.groupsubtype ? pdf_to_name(form[i].u.form.groupsubtype) : "",
form[i].u.form.groupsubtype ? " Group" : "",
form[i].u.form.reference ? " Reference" : "",
pdf_to_num(form[i].u.form.obj), pdf_to_gen(form[i].u.form.obj));
}
printf("\n");
}
if (show & XOBJS && psobjs > 0)
{
printf("Postscript xobjects (%d):\n", psobjs);
for (i = 0; i < psobjs; i++)
{
printf(PAGE_FMT "(%d %d R)\n",
psobj[i].page,
pdf_to_num(psobj[i].pageref), pdf_to_gen(psobj[i].pageref),
pdf_to_num(psobj[i].u.form.obj), pdf_to_gen(psobj[i].u.form.obj));
}
printf("\n");
}
}
char *
pdf_parse_link_dest(fz_context *ctx, pdf_document *doc, pdf_obj *dest)
{
pdf_obj *obj;
char buf[256];
const char *ld;
int page;
int x, y;
dest = resolve_dest(ctx, doc, dest);
if (dest == NULL)
{
fz_warn(ctx, "undefined link destination");
return NULL;
}
if (pdf_is_name(ctx, dest))
{
ld = pdf_to_name(ctx, dest);
return fz_strdup(ctx, ld);
}
else if (pdf_is_string(ctx, dest))
{
ld = pdf_to_str_buf(ctx, dest);
return fz_strdup(ctx, ld);
}
obj = pdf_array_get(ctx, dest, 0);
if (pdf_is_int(ctx, obj))
page = pdf_to_int(ctx, obj);
else
{
fz_try(ctx)
page = pdf_lookup_page_number(ctx, doc, obj);
fz_catch(ctx)
page = -1;
}
x = y = 0;
obj = pdf_array_get(ctx, dest, 1);
if (pdf_name_eq(ctx, obj, PDF_NAME_XYZ))
{
x = pdf_to_int(ctx, pdf_array_get(ctx, dest, 2));
y = pdf_to_int(ctx, pdf_array_get(ctx, dest, 3));
}
else if (pdf_name_eq(ctx, obj, PDF_NAME_FitR))
{
x = pdf_to_int(ctx, pdf_array_get(ctx, dest, 2));
y = pdf_to_int(ctx, pdf_array_get(ctx, dest, 5));
}
else if (pdf_name_eq(ctx, obj, PDF_NAME_FitH) || pdf_name_eq(ctx, obj, PDF_NAME_FitBH))
y = pdf_to_int(ctx, pdf_array_get(ctx, dest, 2));
else if (pdf_name_eq(ctx, obj, PDF_NAME_FitV) || pdf_name_eq(ctx, obj, PDF_NAME_FitBV))
x = pdf_to_int(ctx, pdf_array_get(ctx, dest, 2));
if (page >= 0)
{
if (x != 0 || y != 0)
fz_snprintf(buf, sizeof buf, "#%d,%d,%d", page + 1, x, y);
else
fz_snprintf(buf, sizeof buf, "#%d", page + 1);
return fz_strdup(ctx, buf);
}
return NULL;
}
static void savefont(pdf_obj *dict, int num)
{
char namebuf[1024];
fz_buffer *buf;
pdf_obj *stream = NULL;
pdf_obj *obj;
char *ext = "";
fz_output *out;
char *fontname = "font";
size_t len;
unsigned char *data;
obj = pdf_dict_get(ctx, dict, PDF_NAME_FontName);
if (obj)
fontname = pdf_to_name(ctx, obj);
obj = pdf_dict_get(ctx, dict, PDF_NAME_FontFile);
if (obj)
{
stream = obj;
ext = "pfa";
}
obj = pdf_dict_get(ctx, dict, PDF_NAME_FontFile2);
if (obj)
{
stream = obj;
ext = "ttf";
}
obj = pdf_dict_get(ctx, dict, PDF_NAME_FontFile3);
if (obj)
{
stream = obj;
obj = pdf_dict_get(ctx, obj, PDF_NAME_Subtype);
if (obj && !pdf_is_name(ctx, obj))
fz_throw(ctx, FZ_ERROR_GENERIC, "invalid font descriptor subtype");
if (pdf_name_eq(ctx, obj, PDF_NAME_Type1C))
ext = "cff";
else if (pdf_name_eq(ctx, obj, PDF_NAME_CIDFontType0C))
ext = "cid";
else if (pdf_name_eq(ctx, obj, PDF_NAME_OpenType))
ext = "otf";
else
fz_throw(ctx, FZ_ERROR_GENERIC, "unhandled font type '%s'", pdf_to_name(ctx, obj));
}
if (!stream)
{
fz_warn(ctx, "unhandled font type");
return;
}
buf = pdf_load_stream(ctx, doc, pdf_to_num(ctx, stream));
len = fz_buffer_storage(ctx, buf, &data);
fz_try(ctx)
{
snprintf(namebuf, sizeof(namebuf), "%s-%04d.%s", fontname, num, ext);
printf("extracting font %s\n", namebuf);
out = fz_new_output_with_path(ctx, namebuf, 0);
fz_try(ctx)
fz_write(ctx, out, data, len);
fz_always(ctx)
fz_drop_output(ctx, out);
fz_catch(ctx)
fz_rethrow(ctx);
}
fz_always(ctx)
fz_drop_buffer(ctx, buf);
fz_catch(ctx)
fz_rethrow(ctx);
}
static void retainpages(fz_context *ctx, globals *glo, int argc, char **argv)
{
pdf_obj *oldroot, *root, *pages, *kids, *countobj, *parent, *olddests;
pdf_document *doc = glo->doc;
int argidx = 0;
pdf_obj *names_list = NULL;
int pagecount;
int i;
/* Keep only pages/type and (reduced) dest entries to avoid
* references to unretained pages */
oldroot = pdf_dict_get(ctx, pdf_trailer(ctx, doc), PDF_NAME_Root);
pages = pdf_dict_get(ctx, oldroot, PDF_NAME_Pages);
olddests = pdf_load_name_tree(ctx, doc, PDF_NAME_Dests);
root = pdf_new_dict(ctx, doc, 2);
pdf_dict_put(ctx, root, PDF_NAME_Type, pdf_dict_get(ctx, oldroot, PDF_NAME_Type));
pdf_dict_put(ctx, root, PDF_NAME_Pages, pdf_dict_get(ctx, oldroot, PDF_NAME_Pages));
pdf_update_object(ctx, doc, pdf_to_num(ctx, oldroot), root);
pdf_drop_obj(ctx, root);
/* Create a new kids array with only the pages we want to keep */
parent = pdf_new_indirect(ctx, doc, pdf_to_num(ctx, pages), pdf_to_gen(ctx, pages));
kids = pdf_new_array(ctx, doc, 1);
/* Retain pages specified */
while (argc - argidx)
{
int page, spage, epage;
char *spec, *dash;
char *pagelist = argv[argidx];
pagecount = pdf_count_pages(ctx, doc);
spec = fz_strsep(&pagelist, ",");
while (spec)
{
dash = strchr(spec, '-');
if (dash == spec)
spage = epage = pagecount;
else
spage = epage = atoi(spec);
if (dash)
{
if (strlen(dash) > 1)
epage = atoi(dash + 1);
else
epage = pagecount;
}
spage = fz_clampi(spage, 1, pagecount);
epage = fz_clampi(epage, 1, pagecount);
if (spage < epage)
for (page = spage; page <= epage; ++page)
retainpage(ctx, doc, parent, kids, page);
else
for (page = spage; page >= epage; --page)
retainpage(ctx, doc, parent, kids, page);
spec = fz_strsep(&pagelist, ",");
}
argidx++;
}
pdf_drop_obj(ctx, parent);
/* Update page count and kids array */
countobj = pdf_new_int(ctx, doc, pdf_array_len(ctx, kids));
pdf_dict_put(ctx, pages, PDF_NAME_Count, countobj);
pdf_drop_obj(ctx, countobj);
pdf_dict_put(ctx, pages, PDF_NAME_Kids, kids);
pdf_drop_obj(ctx, kids);
/* Also preserve the (partial) Dests name tree */
if (olddests)
{
pdf_obj *names = pdf_new_dict(ctx, doc, 1);
pdf_obj *dests = pdf_new_dict(ctx, doc, 1);
int len = pdf_dict_len(ctx, olddests);
names_list = pdf_new_array(ctx, doc, 32);
for (i = 0; i < len; i++)
{
pdf_obj *key = pdf_dict_get_key(ctx, olddests, i);
pdf_obj *val = pdf_dict_get_val(ctx, olddests, i);
pdf_obj *dest = pdf_dict_get(ctx, val, PDF_NAME_D);
dest = pdf_array_get(ctx, dest ? dest : val, 0);
if (pdf_array_contains(ctx, pdf_dict_get(ctx, pages, PDF_NAME_Kids), dest))
{
pdf_obj *key_str = pdf_new_string(ctx, doc, pdf_to_name(ctx, key), strlen(pdf_to_name(ctx, key)));
pdf_array_push(ctx, names_list, key_str);
pdf_array_push(ctx, names_list, val);
pdf_drop_obj(ctx, key_str);
}
}
root = pdf_dict_get(ctx, pdf_trailer(ctx, doc), PDF_NAME_Root);
pdf_dict_put(ctx, dests, PDF_NAME_Names, names_list);
pdf_dict_put(ctx, names, PDF_NAME_Dests, dests);
pdf_dict_put(ctx, root, PDF_NAME_Names, names);
pdf_drop_obj(ctx, names);
pdf_drop_obj(ctx, dests);
pdf_drop_obj(ctx, names_list);
pdf_drop_obj(ctx, olddests);
}
/* Force the next call to pdf_count_pages to recount */
glo->doc->page_count = 0;
/* Edit each pages /Annot list to remove any links that point to
* nowhere. */
pagecount = pdf_count_pages(ctx, doc);
for (i = 0; i < pagecount; i++)
{
pdf_obj *pageref = pdf_lookup_page_obj(ctx, doc, i);
pdf_obj *pageobj = pdf_resolve_indirect(ctx, pageref);
pdf_obj *annots = pdf_dict_get(ctx, pageobj, PDF_NAME_Annots);
int len = pdf_array_len(ctx, annots);
int j;
for (j = 0; j < len; j++)
{
pdf_obj *o = pdf_array_get(ctx, annots, j);
pdf_obj *p;
if (!pdf_name_eq(ctx, pdf_dict_get(ctx, o, PDF_NAME_Subtype), PDF_NAME_Link))
continue;
p = pdf_dict_get(ctx, o, PDF_NAME_A);
if (!pdf_name_eq(ctx, pdf_dict_get(ctx, p, PDF_NAME_S), PDF_NAME_GoTo))
continue;
if (string_in_names_list(ctx, pdf_dict_get(ctx, p, PDF_NAME_D), names_list))
continue;
/* FIXME: Should probably look at Next too */
/* Remove this annotation */
pdf_array_delete(ctx, annots, j);
j--;
}
}
}
static pdf_font_desc *
load_cid_font(pdf_document *xref, pdf_obj *dict, pdf_obj *encoding, pdf_obj *to_unicode)
{
pdf_obj *widths;
pdf_obj *descriptor;
pdf_font_desc *fontdesc = NULL;
FT_Face face;
int kind;
char collection[256];
char *basefont;
int i, k, fterr;
pdf_obj *obj;
int dw;
fz_context *ctx = xref->ctx;
fz_var(fontdesc);
fz_try(ctx)
{
/* Get font name and CID collection */
basefont = pdf_to_name(pdf_dict_gets(dict, "BaseFont"));
{
pdf_obj *cidinfo;
char tmpstr[64];
int tmplen;
cidinfo = pdf_dict_gets(dict, "CIDSystemInfo");
if (!cidinfo)
fz_throw(ctx, "cid font is missing info");
obj = pdf_dict_gets(cidinfo, "Registry");
tmplen = fz_mini(sizeof tmpstr - 1, pdf_to_str_len(obj));
memcpy(tmpstr, pdf_to_str_buf(obj), tmplen);
tmpstr[tmplen] = '\0';
fz_strlcpy(collection, tmpstr, sizeof collection);
fz_strlcat(collection, "-", sizeof collection);
obj = pdf_dict_gets(cidinfo, "Ordering");
tmplen = fz_mini(sizeof tmpstr - 1, pdf_to_str_len(obj));
memcpy(tmpstr, pdf_to_str_buf(obj), tmplen);
tmpstr[tmplen] = '\0';
fz_strlcat(collection, tmpstr, sizeof collection);
}
/* Load font file */
fontdesc = pdf_new_font_desc(ctx);
descriptor = pdf_dict_gets(dict, "FontDescriptor");
if (!descriptor)
fz_throw(ctx, "syntaxerror: missing font descriptor");
pdf_load_font_descriptor(fontdesc, xref, descriptor, collection, basefont);
face = fontdesc->font->ft_face;
kind = ft_kind(face);
/* Encoding */
if (pdf_is_name(encoding))
{
if (!strcmp(pdf_to_name(encoding), "Identity-H"))
fontdesc->encoding = pdf_new_identity_cmap(ctx, 0, 2);
else if (!strcmp(pdf_to_name(encoding), "Identity-V"))
fontdesc->encoding = pdf_new_identity_cmap(ctx, 1, 2);
else
fontdesc->encoding = pdf_load_system_cmap(ctx, pdf_to_name(encoding));
}
else if (pdf_is_indirect(encoding))
{
fontdesc->encoding = pdf_load_embedded_cmap(xref, encoding);
}
else
{
fz_throw(ctx, "syntaxerror: font missing encoding");
}
fontdesc->size += pdf_cmap_size(ctx, fontdesc->encoding);
pdf_set_font_wmode(ctx, fontdesc, pdf_cmap_wmode(ctx, fontdesc->encoding));
if (kind == TRUETYPE)
{
pdf_obj *cidtogidmap;
cidtogidmap = pdf_dict_gets(dict, "CIDToGIDMap");
if (pdf_is_indirect(cidtogidmap))
{
fz_buffer *buf;
buf = pdf_load_stream(xref, pdf_to_num(cidtogidmap), pdf_to_gen(cidtogidmap));
fontdesc->cid_to_gid_len = (buf->len) / 2;
fontdesc->cid_to_gid = fz_malloc_array(ctx, fontdesc->cid_to_gid_len, sizeof(unsigned short));
fontdesc->size += fontdesc->cid_to_gid_len * sizeof(unsigned short);
for (i = 0; i < fontdesc->cid_to_gid_len; i++)
fontdesc->cid_to_gid[i] = (buf->data[i * 2] << 8) + buf->data[i * 2 + 1];
fz_drop_buffer(ctx, buf);
}
/* if truetype font is external, cidtogidmap should not be identity */
/* so we map from cid to unicode and then map that through the (3 1) */
/* unicode cmap to get a glyph id */
else if (fontdesc->font->ft_substitute)
{
fterr = FT_Select_Charmap(face, ft_encoding_unicode);
if (fterr)
{
fz_throw(ctx, "fonterror: no unicode cmap when emulating CID font: %s", ft_error_string(fterr));
}
if (!strcmp(collection, "Adobe-CNS1"))
fontdesc->to_ttf_cmap = pdf_load_system_cmap(ctx, "Adobe-CNS1-UCS2");
else if (!strcmp(collection, "Adobe-GB1"))
fontdesc->to_ttf_cmap = pdf_load_system_cmap(ctx, "Adobe-GB1-UCS2");
else if (!strcmp(collection, "Adobe-Japan1"))
fontdesc->to_ttf_cmap = pdf_load_system_cmap(ctx, "Adobe-Japan1-UCS2");
else if (!strcmp(collection, "Adobe-Japan2"))
fontdesc->to_ttf_cmap = pdf_load_system_cmap(ctx, "Adobe-Japan2-UCS2");
else if (!strcmp(collection, "Adobe-Korea1"))
fontdesc->to_ttf_cmap = pdf_load_system_cmap(ctx, "Adobe-Korea1-UCS2");
}
}
pdf_load_to_unicode(xref, fontdesc, NULL, collection, to_unicode);
/* Horizontal */
dw = 1000;
obj = pdf_dict_gets(dict, "DW");
if (obj)
dw = pdf_to_int(obj);
pdf_set_default_hmtx(ctx, fontdesc, dw);
widths = pdf_dict_gets(dict, "W");
if (widths)
{
int c0, c1, w, n, m;
n = pdf_array_len(widths);
for (i = 0; i < n; )
{
c0 = pdf_to_int(pdf_array_get(widths, i));
obj = pdf_array_get(widths, i + 1);
if (pdf_is_array(obj))
{
m = pdf_array_len(obj);
for (k = 0; k < m; k++)
{
w = pdf_to_int(pdf_array_get(obj, k));
pdf_add_hmtx(ctx, fontdesc, c0 + k, c0 + k, w);
}
i += 2;
}
else
{
c1 = pdf_to_int(obj);
w = pdf_to_int(pdf_array_get(widths, i + 2));
pdf_add_hmtx(ctx, fontdesc, c0, c1, w);
i += 3;
}
}
}
pdf_end_hmtx(ctx, fontdesc);
/* Vertical */
if (pdf_cmap_wmode(ctx, fontdesc->encoding) == 1)
{
int dw2y = 880;
int dw2w = -1000;
obj = pdf_dict_gets(dict, "DW2");
if (obj)
{
dw2y = pdf_to_int(pdf_array_get(obj, 0));
dw2w = pdf_to_int(pdf_array_get(obj, 1));
}
pdf_set_default_vmtx(ctx, fontdesc, dw2y, dw2w);
widths = pdf_dict_gets(dict, "W2");
if (widths)
{
int c0, c1, w, x, y, n;
n = pdf_array_len(widths);
for (i = 0; i < n; )
{
c0 = pdf_to_int(pdf_array_get(widths, i));
obj = pdf_array_get(widths, i + 1);
if (pdf_is_array(obj))
{
int m = pdf_array_len(obj);
for (k = 0; k * 3 < m; k ++)
{
w = pdf_to_int(pdf_array_get(obj, k * 3 + 0));
x = pdf_to_int(pdf_array_get(obj, k * 3 + 1));
y = pdf_to_int(pdf_array_get(obj, k * 3 + 2));
pdf_add_vmtx(ctx, fontdesc, c0 + k, c0 + k, x, y, w);
}
i += 2;
}
else
{
c1 = pdf_to_int(obj);
w = pdf_to_int(pdf_array_get(widths, i + 2));
x = pdf_to_int(pdf_array_get(widths, i + 3));
y = pdf_to_int(pdf_array_get(widths, i + 4));
pdf_add_vmtx(ctx, fontdesc, c0, c1, x, y, w);
i += 5;
}
}
}
pdf_end_vmtx(ctx, fontdesc);
}
}
fz_catch(ctx)
{
pdf_drop_font(ctx, fontdesc);
fz_throw(ctx, "cannot load cid font (%d %d R)", pdf_to_num(dict), pdf_to_gen(dict));
}
return fontdesc;
}
fz_link_dest
pdf_parse_link_dest(pdf_document *xref, pdf_obj *dest)
{
fz_link_dest ld;
pdf_obj *obj;
int l_from_2 = 0;
int b_from_3 = 0;
int r_from_4 = 0;
int t_from_5 = 0;
int t_from_3 = 0;
int t_from_2 = 0;
int z_from_4 = 0;
dest = resolve_dest(xref, dest);
if (dest == NULL || !pdf_is_array(dest))
{
ld.kind = FZ_LINK_NONE;
return ld;
}
obj = pdf_array_get(dest, 0);
if (pdf_is_int(obj))
ld.ld.gotor.page = pdf_to_int(obj);
else
ld.ld.gotor.page = pdf_lookup_page_number(xref, obj);
ld.kind = FZ_LINK_GOTO;
ld.ld.gotor.flags = 0;
ld.ld.gotor.lt.x = 0;
ld.ld.gotor.lt.y = 0;
ld.ld.gotor.rb.x = 0;
ld.ld.gotor.rb.y = 0;
ld.ld.gotor.file_spec = NULL;
ld.ld.gotor.new_window = 0;
obj = pdf_array_get(dest, 1);
if (!pdf_is_name(obj))
return ld;
if (!strcmp("XYZ", pdf_to_name(obj)))
{
l_from_2 = t_from_3 = z_from_4 = 1;
ld.ld.gotor.flags |= fz_link_flag_r_is_zoom;
}
else if ((!strcmp("Fit", pdf_to_name(obj))) || (!strcmp("FitB", pdf_to_name(obj))))
{
ld.ld.gotor.flags |= fz_link_flag_fit_h;
ld.ld.gotor.flags |= fz_link_flag_fit_v;
}
else if ((!strcmp("FitH", pdf_to_name(obj))) || (!strcmp("FitBH", pdf_to_name(obj))))
{
t_from_2 = 1;
ld.ld.gotor.flags |= fz_link_flag_fit_h;
}
else if ((!strcmp("FitV", pdf_to_name(obj))) || (!strcmp("FitBV", pdf_to_name(obj))))
{
l_from_2 = 1;
ld.ld.gotor.flags |= fz_link_flag_fit_v;
}
else if (!strcmp("FitR", pdf_to_name(obj)))
{
l_from_2 = b_from_3 = r_from_4 = t_from_5 = 1;
ld.ld.gotor.flags |= fz_link_flag_fit_h;
ld.ld.gotor.flags |= fz_link_flag_fit_v;
}
if (l_from_2)
{
obj = pdf_array_get(dest, 2);
if (pdf_is_int(obj))
{
ld.ld.gotor.flags |= fz_link_flag_l_valid;
ld.ld.gotor.lt.x = pdf_to_int(obj);
}
else if (pdf_is_real(obj))
{
ld.ld.gotor.flags |= fz_link_flag_l_valid;
ld.ld.gotor.lt.x = pdf_to_real(obj);
}
}
if (b_from_3)
{
obj = pdf_array_get(dest, 3);
if (pdf_is_int(obj))
{
ld.ld.gotor.flags |= fz_link_flag_b_valid;
ld.ld.gotor.rb.y = pdf_to_int(obj);
}
else if (pdf_is_real(obj))
{
ld.ld.gotor.flags |= fz_link_flag_b_valid;
ld.ld.gotor.rb.y = pdf_to_real(obj);
}
}
if (r_from_4)
{
obj = pdf_array_get(dest, 4);
if (pdf_is_int(obj))
{
ld.ld.gotor.flags |= fz_link_flag_r_valid;
ld.ld.gotor.rb.x = pdf_to_int(obj);
}
else if (pdf_is_real(obj))
{
ld.ld.gotor.flags |= fz_link_flag_r_valid;
ld.ld.gotor.rb.x = pdf_to_real(obj);
}
}
if (t_from_5 || t_from_3 || t_from_2)
{
if (t_from_5)
obj = pdf_array_get(dest, 5);
else if (t_from_3)
obj = pdf_array_get(dest, 3);
else
obj = pdf_array_get(dest, 2);
if (pdf_is_int(obj))
{
ld.ld.gotor.flags |= fz_link_flag_t_valid;
ld.ld.gotor.lt.y = pdf_to_int(obj);
}
else if (pdf_is_real(obj))
{
ld.ld.gotor.flags |= fz_link_flag_t_valid;
ld.ld.gotor.lt.y = pdf_to_real(obj);
}
}
if (z_from_4)
{
obj = pdf_array_get(dest, 4);
if (pdf_is_int(obj))
{
ld.ld.gotor.flags |= fz_link_flag_r_valid;
ld.ld.gotor.rb.x = pdf_to_int(obj);
}
else if (pdf_is_real(obj))
{
ld.ld.gotor.flags |= fz_link_flag_r_valid;
ld.ld.gotor.rb.x = pdf_to_real(obj);
}
}
/* Duplicate the values out for the sake of stupid clients */
if ((ld.ld.gotor.flags & (fz_link_flag_l_valid | fz_link_flag_r_valid)) == fz_link_flag_l_valid)
ld.ld.gotor.rb.x = ld.ld.gotor.lt.x;
if ((ld.ld.gotor.flags & (fz_link_flag_l_valid | fz_link_flag_r_valid | fz_link_flag_r_is_zoom)) == fz_link_flag_r_valid)
ld.ld.gotor.lt.x = ld.ld.gotor.rb.x;
if ((ld.ld.gotor.flags & (fz_link_flag_t_valid | fz_link_flag_b_valid)) == fz_link_flag_t_valid)
ld.ld.gotor.rb.y = ld.ld.gotor.lt.y;
if ((ld.ld.gotor.flags & (fz_link_flag_t_valid | fz_link_flag_b_valid)) == fz_link_flag_b_valid)
ld.ld.gotor.lt.y = ld.ld.gotor.rb.y;
return ld;
}
