static fz_error *
loadseparation(fz_colorspace **csp, pdf_xref *xref, fz_obj *array)
{
fz_error *error;
struct separation *cs;
fz_obj *nameobj = fz_arrayget(array, 1);
fz_obj *baseobj = fz_arrayget(array, 2);
fz_obj *tintobj = fz_arrayget(array, 3);
fz_colorspace *base;
pdf_function *tint;
int n;
pdf_logrsrc("load Separation {\n");
if (fz_isarray(nameobj))
n = fz_arraylen(nameobj);
else
n = 1;
pdf_logrsrc("n = %d\n", n);
error = pdf_resolve(&baseobj, xref);
if (error)
return error;
error = pdf_loadcolorspace(&base, xref, baseobj);
fz_dropobj(baseobj);
if (error)
return error;
error = pdf_loadfunction(&tint, xref, tintobj);
if (error)
{
fz_dropcolorspace(base);
return error;
}
cs = fz_malloc(sizeof(struct separation));
if (!cs)
{
pdf_dropfunction(tint);
fz_dropcolorspace(base);
return fz_outofmem;
}
initcs((fz_colorspace*)cs,
n == 1 ? "Separation" : "DeviceN", n,
separationtoxyz, nil, dropseparation);
cs->base = base;
cs->tint = tint;
pdf_logrsrc("}\n");
*csp = (fz_colorspace*)cs;
return nil;
}
static fz_colorspace *
loadlab(pdf_xref *xref, fz_obj *dict)
{
struct cielab *cs;
fz_obj *tmp;
cs = fz_malloc(sizeof(struct cielab));
pdf_logrsrc("load Lab\n");
initcs((fz_colorspace*)cs, "Lab", 3, labtoxyz, xyztolab, nil);
cs->white[0] = 1.0;
cs->white[1] = 1.0;
cs->white[2] = 1.0;
cs->black[0] = 0.0;
cs->black[1] = 0.0;
cs->black[2] = 0.0;
cs->range[0] = -100;
cs->range[1] = 100;
cs->range[2] = -100;
cs->range[3] = 100;
tmp = fz_dictgets(dict, "WhitePoint");
if (fz_isarray(tmp))
{
cs->white[0] = fz_toreal(fz_arrayget(tmp, 0));
cs->white[1] = fz_toreal(fz_arrayget(tmp, 1));
cs->white[2] = fz_toreal(fz_arrayget(tmp, 2));
}
tmp = fz_dictgets(dict, "BlackPoint");
if (fz_isarray(tmp))
{
cs->black[0] = fz_toreal(fz_arrayget(tmp, 0));
cs->black[1] = fz_toreal(fz_arrayget(tmp, 1));
cs->black[2] = fz_toreal(fz_arrayget(tmp, 2));
}
tmp = fz_dictgets(dict, "Range");
if (fz_isarray(tmp))
{
cs->range[0] = fz_toreal(fz_arrayget(tmp, 0));
cs->range[1] = fz_toreal(fz_arrayget(tmp, 1));
cs->range[2] = fz_toreal(fz_arrayget(tmp, 2));
cs->range[3] = fz_toreal(fz_arrayget(tmp, 3));
}
return (fz_colorspace*) cs;
}
static fz_error
loadseparation(fz_colorspace **csp, pdf_xref *xref, fz_obj *array)
{
fz_error error;
struct separation *cs;
fz_obj *nameobj = fz_arrayget(array, 1);
fz_obj *baseobj = fz_arrayget(array, 2);
fz_obj *tintobj = fz_arrayget(array, 3);
fz_colorspace *base;
pdf_function *tint;
int n;
pdf_logrsrc("load Separation {\n");
if (fz_isarray(nameobj))
n = fz_arraylen(nameobj);
else
n = 1;
if (n > FZ_MAXCOLORS)
return fz_throw("too many components in colorspace");
pdf_logrsrc("n = %d\n", n);
error = pdf_loadcolorspace(&base, xref, baseobj);
if (error)
return fz_rethrow(error, "cannot load base colorspace");
error = pdf_loadfunction(&tint, xref, tintobj);
if (error)
{
fz_dropcolorspace(base);
return fz_rethrow(error, "cannot load tint function");
}
cs = fz_malloc(sizeof(struct separation));
initcs((fz_colorspace*)cs,
n == 1 ? "Separation" : "DeviceN", n,
separationtoxyz, nil, freeseparation);
cs->base = fz_keepcolorspace(base);
cs->tint = pdf_keepfunction(tint);
fz_dropcolorspace(base);
pdf_dropfunction(tint);
pdf_logrsrc("}\n");
*csp = (fz_colorspace*)cs;
return fz_okay;
}
fz_rect pdf_torect(fz_obj *array)
{
fz_rect r;
float a = fz_toreal(fz_arrayget(array, 0));
float b = fz_toreal(fz_arrayget(array, 1));
float c = fz_toreal(fz_arrayget(array, 2));
float d = fz_toreal(fz_arrayget(array, 3));
r.x0 = MIN(a, c);
r.y0 = MIN(b, d);
r.x1 = MAX(a, c);
r.y1 = MAX(b, d);
return r;
}
static fz_obj *
resolvedest(pdf_xref *xref, fz_obj *dest)
{
if (fz_isname(dest))
{
dest = fz_dictget(xref->dests, dest);
if (dest)
pdf_resolve(&dest, xref); /* XXX */
return resolvedest(xref, dest);
}
else if (fz_isstring(dest))
{
dest = fz_dictget(xref->dests, dest);
if (dest)
pdf_resolve(&dest, xref); /* XXX */
return resolvedest(xref, dest);
}
else if (fz_isarray(dest))
{
return fz_arrayget(dest, 0);
}
else if (fz_isdict(dest))
{
dest = fz_dictgets(dest, "D");
return resolvedest(xref, dest);
}
else if (fz_isindirect(dest))
return dest;
return nil;
}
static fz_obj *
resolvedest(pdf_xref *xref, fz_obj *dest)
{
if (fz_isname(dest) || fz_isstring(dest))
{
dest = pdf_lookupdest(xref, dest);
return resolvedest(xref, dest);
}
else if (fz_isarray(dest))
{
return fz_arrayget(dest, 0);
}
else if (fz_isdict(dest))
{
dest = fz_dictgets(dest, "D");
return resolvedest(xref, dest);
}
else if (fz_isindirect(dest))
return dest;
return nil;
}
static fz_error
loadtype0(pdf_fontdesc **fontdescp, pdf_xref *xref, fz_obj *dict)
{
fz_error error;
fz_obj *dfonts;
fz_obj *dfont;
fz_obj *subtype;
fz_obj *encoding;
fz_obj *tounicode;
dfonts = fz_dictgets(dict, "DescendantFonts");
if (!dfonts)
return fz_throw("cid font is missing descendant fonts");
dfont = fz_arrayget(dfonts, 0);
subtype = fz_dictgets(dfont, "Subtype");
encoding = fz_dictgets(dict, "Encoding");
tounicode = fz_dictgets(dict, "ToUnicode");
if (fz_isname(subtype) && !strcmp(fz_toname(subtype), "CIDFontType0"))
error = loadcidfont(fontdescp, xref, dfont, encoding, tounicode);
else if (fz_isname(subtype) && !strcmp(fz_toname(subtype), "CIDFontType2"))
error = loadcidfont(fontdescp, xref, dfont, encoding, tounicode);
else
error = fz_throw("syntaxerror: unknown cid font type");
if (error)
return fz_rethrow(error, "cannot load descendant font (%d %d R)", fz_tonum(dfont), fz_togen(dfont));
return fz_okay;
}
void
pdf_loadannots(pdf_comment **cp, pdf_link **lp, pdf_xref *xref, fz_obj *annots)
{
pdf_comment *comment;
pdf_link *link;
fz_obj *subtype;
fz_obj *obj;
int i;
comment = nil;
link = nil;
pdf_logpage("load annotations {\n");
for (i = 0; i < fz_arraylen(annots); i++)
{
obj = fz_arrayget(annots, i);
subtype = fz_dictgets(obj, "Subtype");
if (fz_isname(subtype) && !strcmp(fz_toname(subtype), "Link"))
{
pdf_link *temp = pdf_loadlink(xref, obj);
if (temp)
{
temp->next = link;
link = temp;
}
}
}
pdf_logpage("}\n");
*cp = comment;
*lp = link;
}
fz_error *
pdf_loadannots(pdf_comment **cp, pdf_link **lp, pdf_xref *xref, fz_obj *annots)
{
fz_error *error;
pdf_comment *comment;
pdf_link *link;
fz_obj *subtype;
fz_obj *obj;
int i;
comment = nil;
link = nil;
pdf_logpage("load annotations {\n");
for (i = 0; i < fz_arraylen(annots); i++)
{
obj = fz_arrayget(annots, i);
error = pdf_resolve(&obj, xref);
if (error)
goto cleanup;
subtype = fz_dictgets(obj, "Subtype");
if (!strcmp(fz_toname(subtype), "Link"))
{
pdf_link *temp = nil;
error = pdf_loadlink(&temp, xref, obj);
fz_dropobj(obj);
if (error)
goto cleanup;
if (temp)
{
temp->next = link;
link = temp;
}
}
else
{
error = loadcomment(&comment, xref, obj);
fz_dropobj(obj);
if (error)
goto cleanup;
}
}
pdf_logpage("}\n");
*cp = comment;
*lp = link;
return nil;
cleanup:
pdf_droplink(link);
return error;
}
fz_error
pdf_loadannots(pdf_comment **cp, pdf_link **lp, pdf_xref *xref, fz_obj *annots)
{
fz_error error;
pdf_comment *comment;
pdf_link *link;
fz_obj *subtype;
fz_obj *obj;
int i;
comment = nil;
link = nil;
pdf_logpage("load annotations {\n");
for (i = 0; i < fz_arraylen(annots); i++)
{
obj = fz_arrayget(annots, i);
subtype = fz_dictgets(obj, "Subtype");
if (fz_isname(subtype) && !strcmp(fz_toname(subtype), "Link"))
{
pdf_link *temp = nil;
error = pdf_loadlink(&temp, xref, obj);
if (error)
{
if (link)
pdf_droplink(link);
return fz_rethrow(error, "cannot load annotation link");
}
if (temp)
{
temp->next = link;
link = temp;
}
}
else
{
error = loadcomment(&comment, xref, obj);
if (error)
{
if (link)
pdf_droplink(link);
return fz_rethrow(error, "cannot load annotation comment");
}
}
}
pdf_logpage("}\n");
*cp = comment;
*lp = link;
return fz_okay;
}
/*
* Build a chain of filters given filter names and param dicts.
* If head is given, start filter chain with it.
* Assume ownership of head.
*/
static fz_error *
buildfilterchain(fz_filter **filterp, fz_filter *head, fz_obj *fs, fz_obj *ps)
{
fz_error *error;
fz_filter *newhead;
fz_filter *tail;
fz_obj *f;
fz_obj *p;
int i;
for (i = 0; i < fz_arraylen(fs); i++)
{
f = fz_arrayget(fs, i);
if (fz_isarray(ps))
p = fz_arrayget(ps, i);
else
p = nil;
error = buildonefilter(&tail, f, p);
if (error)
return fz_rethrow(error, "cannot create filter");
if (head)
{
error = fz_newpipeline(&newhead, head, tail);
fz_dropfilter(head);
fz_dropfilter(tail);
if (error)
{
fz_dropfilter(newhead);
return fz_rethrow(error, "cannot create pipeline filter");
}
head = newhead;
}
else
head = tail;
}
*filterp = head;
return fz_okay;
}
int
epdf_index_item_page_get(const Epdf_Document *doc, const Epdf_Index_Item *item)
{
fz_obj *dest;
int p;
int n;
int g;
if (!item || !item->link)
return -1;
if (PDF_LGOTO != item->link->kind)
return -1;
dest = item->link->dest;
p = 0;
if (fz_isint(dest))
{
p = fz_toint(dest);
return p;
}
if (fz_isdict(dest))
{
/* The destination is linked from a Go-To action's D array */
fz_obj *D;
D = fz_dictgets(dest, "D");
if (D && fz_isarray(D))
dest = fz_arrayget(D, 0);
}
n = fz_tonum(dest);
g = fz_togen(dest);
for (p = 1; p <= epdf_document_page_count_get(doc); p++)
{
fz_obj *page;
int np;
int gp;
page = pdf_getpageobject(doc->xref, p);
if (!page)
continue;
np = fz_tonum(page);
gp = fz_togen(page);
if (n == np && g == gp)
return p-1;
}
return 0;
}
fz_error *
pdf_showtext(pdf_csi *csi, fz_obj *text)
{
pdf_gstate *gstate = csi->gstate + csi->gtop;
pdf_font *font = gstate->font;
fz_error *error;
unsigned char *buf;
unsigned char *end;
int i, len;
int cpt, cid;
if (fz_isarray(text))
{
for (i = 0; i < fz_arraylen(text); i++)
{
fz_obj *item = fz_arrayget(text, i);
if (fz_isstring(item))
{
error = pdf_showtext(csi, item);
if (error)
return fz_rethrow(error, "cannot draw text item");
}
else
{
showspace(csi, - fz_toreal(item) * gstate->size / 1000.0);
}
}
return fz_okay;
}
buf = (unsigned char *)fz_tostrbuf(text);
len = fz_tostrlen(text);
end = buf + len;
while (buf < end)
{
buf = pdf_decodecmap(font->encoding, buf, &cpt);
cid = pdf_lookupcmap(font->encoding, cpt);
if (cid == -1)
cid = 0;
error = showglyph(csi, cid);
if (error)
return fz_rethrow(error, "cannot draw glyph");
if (cpt == 32)
showspace(csi, gstate->wordspace);
}
return fz_okay;
}
int
pdf_isjpximage(fz_obj *dict)
{
fz_obj *filter;
int i;
filter = fz_dictgets(dict, "Filter");
if (!strcmp(fz_toname(filter), "JPXDecode"))
return 1;
for (i = 0; i < fz_arraylen(filter); i++)
if (!strcmp(fz_toname(fz_arrayget(filter, i)), "JPXDecode"))
return 1;
return 0;
}
static void sweepobj(fz_obj *obj)
{
int i;
if (fz_isindirect(obj))
sweepref(obj);
else if (fz_isdict(obj))
for (i = 0; i < fz_dictlen(obj); i++)
sweepobj(fz_dictgetval(obj, i));
else if (fz_isarray(obj))
for (i = 0; i < fz_arraylen(obj); i++)
sweepobj(fz_arrayget(obj, i));
}
void
pdf_showtext(pdf_csi *csi, fz_obj *text)
{
pdf_gstate *gstate = csi->gstate + csi->gtop;
pdf_fontdesc *fontdesc = gstate->font;
unsigned char *buf;
unsigned char *end;
int i, len;
int cpt, cid;
if (!fontdesc)
{
fz_warn("cannot draw text since font and size not set");
return;
}
if (fz_isarray(text))
{
for (i = 0; i < fz_arraylen(text); i++)
{
fz_obj *item = fz_arrayget(text, i);
if (fz_isstring(item))
pdf_showtext(csi, item);
else
pdf_showspace(csi, - fz_toreal(item) * gstate->size * 0.001f);
}
}
if (fz_isstring(text))
{
buf = (unsigned char *)fz_tostrbuf(text);
len = fz_tostrlen(text);
end = buf + len;
while (buf < end)
{
buf = pdf_decodecmap(fontdesc->encoding, buf, &cpt);
cid = pdf_lookupcmap(fontdesc->encoding, cpt);
if (cid == -1)
cid = 0;
pdf_showglyph(csi, cid);
if (cpt == 32)
pdf_showspace(csi, gstate->wordspace);
}
}
}
static fz_error *
loadcalgray(fz_colorspace **csp, pdf_xref *xref, fz_obj *dict)
{
fz_error *error;
struct calgray *cs;
fz_obj *tmp;
error = pdf_resolve(&dict, xref);
if (error)
return error;
cs = fz_malloc(sizeof(struct calgray));
if (!cs)
return fz_outofmem;
pdf_logrsrc("load CalGray\n");
initcs((fz_colorspace*)cs, "CalGray", 1, graytoxyz, xyztogray, nil);
cs->white[0] = 1.0;
cs->white[1] = 1.0;
cs->white[2] = 1.0;
cs->black[0] = 0.0;
cs->black[1] = 0.0;
cs->black[2] = 0.0;
cs->gamma = 1.0;
tmp = fz_dictgets(dict, "WhitePoint");
if (fz_isarray(tmp))
{
cs->white[0] = fz_toreal(fz_arrayget(tmp, 0));
cs->white[1] = fz_toreal(fz_arrayget(tmp, 1));
cs->white[2] = fz_toreal(fz_arrayget(tmp, 2));
}
tmp = fz_dictgets(dict, "BlackPoint");
if (fz_isarray(tmp))
{
cs->black[0] = fz_toreal(fz_arrayget(tmp, 0));
cs->black[1] = fz_toreal(fz_arrayget(tmp, 1));
cs->black[2] = fz_toreal(fz_arrayget(tmp, 2));
}
tmp = fz_dictgets(dict, "Gamma");
if (fz_isreal(tmp))
cs->gamma = fz_toreal(tmp);
fz_dropobj(dict);
*csp = (fz_colorspace*) cs;
return nil;
}
fz_matrix pdf_tomatrix(fz_obj *array)
{
fz_matrix m;
m.a = fz_toreal(fz_arrayget(array, 0));
m.b = fz_toreal(fz_arrayget(array, 1));
m.c = fz_toreal(fz_arrayget(array, 2));
m.d = fz_toreal(fz_arrayget(array, 3));
m.e = fz_toreal(fz_arrayget(array, 4));
m.f = fz_toreal(fz_arrayget(array, 5));
return m;
}
static fz_error *
loadtype0(pdf_font **fontp, pdf_xref *xref, fz_obj *dict, fz_obj *ref)
{
fz_error *error;
fz_obj *dfonts;
fz_obj *dfont;
fz_obj *subtype;
fz_obj *encoding;
fz_obj *tounicode;
dfonts = fz_dictgets(dict, "DescendantFonts");
error = pdf_resolve(&dfonts, xref);
if (error)
return fz_rethrow(error, "cannot find DescendantFonts");
dfont = fz_arrayget(dfonts, 0);
error = pdf_resolve(&dfont, xref);
if (error)
{
fz_dropobj(dfonts);
return fz_rethrow(error, "cannot find descendant font");
}
subtype = fz_dictgets(dfont, "Subtype");
encoding = fz_dictgets(dict, "Encoding");
tounicode = fz_dictgets(dict, "ToUnicode");
if (!strcmp(fz_toname(subtype), "CIDFontType0"))
error = loadcidfont(fontp, xref, dfont, ref, encoding, tounicode);
else if (!strcmp(fz_toname(subtype), "CIDFontType2"))
error = loadcidfont(fontp, xref, dfont, ref, encoding, tounicode);
else
error = fz_throw("syntaxerror: unknown cid font type");
fz_dropobj(dfont);
fz_dropobj(dfonts);
if (error)
return fz_rethrow(error, "cannot load descendant font");
return fz_okay;
}
void
editflushobjects(void)
{
fz_error *error;
fz_obj *results;
int i;
error = pdf_transplant(editxref, src, &results, editobjects);
if (error)
die(error);
for (i = 0; i < fz_arraylen(results); i++)
{
error = fz_arraypush(editpagelist, fz_arrayget(results, i));
if (error)
die(error);
}
fz_dropobj(results);
}
static void renumberobj(fz_obj *obj)
{
int i;
if (fz_isdict(obj))
{
for (i = 0; i < fz_dictlen(obj); i++)
{
fz_obj *key = fz_dictgetkey(obj, i);
fz_obj *val = fz_dictgetval(obj, i);
if (fz_isindirect(val))
{
val = fz_newindirect(renumbermap[fz_tonum(val)], 0, xref);
fz_dictput(obj, key, val);
fz_dropobj(val);
}
else
{
renumberobj(val);
}
}
}
else if (fz_isarray(obj))
{
for (i = 0; i < fz_arraylen(obj); i++)
{
fz_obj *val = fz_arrayget(obj, i);
if (fz_isindirect(val))
{
val = fz_newindirect(renumbermap[fz_tonum(val)], 0, xref);
fz_arrayput(obj, i, val);
fz_dropobj(val);
}
else
{
renumberobj(val);
}
}
}
}
void
pdf_showtext(pdf_csi *csi, fz_obj *text)
{
pdf_gstate *gstate = csi->gstate + csi->gtop;
int i;
if (fz_isarray(text))
{
for (i = 0; i < fz_arraylen(text); i++)
{
fz_obj *item = fz_arrayget(text, i);
if (fz_isstring(item))
pdf_showstring(csi, (unsigned char *)fz_tostrbuf(item), fz_tostrlen(item));
else
pdf_showspace(csi, - fz_toreal(item) * gstate->size * 0.001f);
}
}
else if (fz_isstring(text))
{
pdf_showstring(csi, (unsigned char *)fz_tostrbuf(text), fz_tostrlen(text));
}
}
static void
loadcolorkey(int *colorkey, int bpc, int indexed, fz_obj *obj)
{
int scale = 1;
int i;
pdf_logimage("keyed mask\n");
if (!indexed)
{
switch (bpc)
{
case 1: scale = 255; break;
case 2: scale = 85; break;
case 4: scale = 17; break;
case 8: scale = 1; break;
}
}
for (i = 0; i < fz_arraylen(obj); i++)
colorkey[i] = fz_toint(fz_arrayget(obj, i)) * scale;
}
static fz_colorspace *
loadcalgray(pdf_xref *xref, fz_obj *dict)
{
struct calgray *cs;
fz_obj *tmp;
cs = fz_malloc(sizeof(struct calgray));
pdf_logrsrc("load CalGray\n");
initcs((fz_colorspace*)cs, "CalGray", 1, graytoxyz, xyztogray, nil);
cs->white[0] = 1.0;
cs->white[1] = 1.0;
cs->white[2] = 1.0;
cs->black[0] = 0.0;
cs->black[1] = 0.0;
cs->black[2] = 0.0;
cs->gamma = 1.0;
tmp = fz_dictgets(dict, "WhitePoint");
if (fz_isarray(tmp))
{
cs->white[0] = fz_toreal(fz_arrayget(tmp, 0));
cs->white[1] = fz_toreal(fz_arrayget(tmp, 1));
cs->white[2] = fz_toreal(fz_arrayget(tmp, 2));
}
tmp = fz_dictgets(dict, "BlackPoint");
if (fz_isarray(tmp))
{
cs->black[0] = fz_toreal(fz_arrayget(tmp, 0));
cs->black[1] = fz_toreal(fz_arrayget(tmp, 1));
cs->black[2] = fz_toreal(fz_arrayget(tmp, 2));
}
tmp = fz_dictgets(dict, "Gamma");
if (fz_isreal(tmp))
cs->gamma = fz_toreal(tmp);
return (fz_colorspace*) cs;
}
static fz_error
pdf_loadpagecontentsarray(fz_buffer **bigbufp, pdf_xref *xref, fz_obj *list)
{
fz_error error;
fz_buffer *big;
fz_buffer *one;
int i;
pdf_logpage("multiple content streams: %d\n", fz_arraylen(list));
/* TODO: openstream, read, close into big buffer at once */
big = fz_newbuffer(32 * 1024);
for (i = 0; i < fz_arraylen(list); i++)
{
fz_obj *stm = fz_arrayget(list, i);
error = pdf_loadstream(&one, xref, fz_tonum(stm), fz_togen(stm));
if (error)
{
fz_dropbuffer(big);
return fz_rethrow(error, "cannot load content stream part %d/%d (%d %d R)", i + 1, fz_arraylen(list), fz_tonum(stm), fz_togen(stm));
}
if (big->len + one->len + 1 > big->cap)
fz_resizebuffer(big, big->len + one->len + 1);
memcpy(big->data + big->len, one->data, one->len);
big->data[big->len + one->len] = ' ';
big->len += one->len + 1;
fz_dropbuffer(one);
}
*bigbufp = big;
return fz_okay;
}
static fz_error
pdf_loadcolorspaceimp(fz_colorspace **csp, pdf_xref *xref, fz_obj *obj)
{
if (fz_isname(obj))
{
if (!strcmp(fz_toname(obj), "DeviceGray"))
*csp = pdf_devicegray;
else if (!strcmp(fz_toname(obj), "DeviceRGB"))
*csp = pdf_devicergb;
else if (!strcmp(fz_toname(obj), "DeviceCMYK"))
*csp = pdf_devicecmyk;
else if (!strcmp(fz_toname(obj), "G"))
*csp = pdf_devicegray;
else if (!strcmp(fz_toname(obj), "RGB"))
*csp = pdf_devicergb;
else if (!strcmp(fz_toname(obj), "CMYK"))
*csp = pdf_devicecmyk;
else if (!strcmp(fz_toname(obj), "Pattern"))
*csp = pdf_devicepattern;
else
return fz_throw("unknown colorspace: %s", fz_toname(obj));
return fz_okay;
}
else if (fz_isarray(obj))
{
fz_obj *name = fz_arrayget(obj, 0);
if (fz_isname(name))
{
if (!strcmp(fz_toname(name), "CalCMYK"))
*csp = pdf_devicecmyk;
#ifdef USECAL
else if (!strcmp(fz_toname(name), "CalGray"))
*csp = loadcalgray(xref, fz_arrayget(obj, 1));
else if (!strcmp(fz_toname(name), "CalRGB"))
*csp = loadcalrgb(xref, fz_arrayget(obj, 1));
else if (!strcmp(fz_toname(name), "Lab"))
*csp = loadlab(xref, fz_arrayget(obj, 1));
#else
else if (!strcmp(fz_toname(name), "CalGray"))
*csp = pdf_devicegray;
else if (!strcmp(fz_toname(name), "CalRGB"))
*csp = pdf_devicergb;
else if (!strcmp(fz_toname(name), "Lab"))
*csp = pdf_devicelab;
#endif
else if (!strcmp(fz_toname(name), "ICCBased"))
return loadiccbased(csp, xref, fz_arrayget(obj, 1));
else if (!strcmp(fz_toname(name), "Indexed"))
return loadindexed(csp, xref, obj);
else if (!strcmp(fz_toname(name), "I"))
return loadindexed(csp, xref, obj);
else if (!strcmp(fz_toname(name), "Separation"))
return loadseparation(csp, xref, obj);
else if (!strcmp(fz_toname(name), "DeviceN"))
return loadseparation(csp, xref, obj);
/* load base colorspace instead */
else if (!strcmp(fz_toname(name), "Pattern"))
{
fz_error error;
obj = fz_arrayget(obj, 1);
if (!obj)
{
*csp = pdf_devicepattern;
return fz_okay;
}
error = pdf_loadcolorspace(csp, xref, obj);
if (error)
return fz_rethrow(error, "cannot load pattern");
}
else if (!strcmp(fz_toname(name), "DeviceGray"))
*csp = pdf_devicegray;
else if (!strcmp(fz_toname(name), "DeviceRGB"))
*csp = pdf_devicergb;
else if (!strcmp(fz_toname(name), "DeviceCMYK"))
*csp = pdf_devicecmyk;
else if (!strcmp(fz_toname(name), "G"))
*csp = pdf_devicegray;
else if (!strcmp(fz_toname(name), "RGB"))
*csp = pdf_devicergb;
else if (!strcmp(fz_toname(name), "CMYK"))
*csp = pdf_devicecmyk;
else
return fz_throw("syntaxerror: unknown colorspace %s", fz_toname(name));
return fz_okay;
}
}
return fz_throw("syntaxerror: could not parse color space");
}
static fz_error *
loadshadedict(fz_shade **shadep, pdf_xref *xref, fz_obj *dict, fz_obj *ref, fz_matrix matrix)
{
fz_error *error;
fz_shade *shade;
fz_obj *obj;
int type;
int i;
pdf_logshade("load shade dict %d %d {\n", fz_tonum(ref), fz_togen(ref));
shade = fz_malloc(sizeof(fz_shade));
if (!shade)
return fz_outofmem;
shade->refs = 1;
shade->usebackground = 0;
shade->usefunction = 0;
shade->matrix = matrix;
shade->bbox = fz_infiniterect;
shade->meshlen = 0;
shade->meshcap = 0;
shade->mesh = nil;
obj = fz_dictgets(dict, "ShadingType");
type = fz_toint(obj);
pdf_logshade("type %d\n", type);
/* TODO: flatten indexed... */
obj = fz_dictgets(dict, "ColorSpace");
if (obj)
{
shade->cs = pdf_finditem(xref->store, PDF_KCOLORSPACE, obj);
if (shade->cs)
fz_keepcolorspace(shade->cs);
else
{
error = pdf_resolve(&obj, xref);
if (error)
return error;
error = pdf_loadcolorspace(&shade->cs, xref, obj);
if (error)
return error;
fz_dropobj(obj);
}
}
pdf_logshade("colorspace %s\n", shade->cs->name);
obj = fz_dictgets(dict, "Background");
if (obj)
{
pdf_logshade("background\n");
shade->usebackground = 1;
for (i = 0; i < shade->cs->n; i++)
shade->background[i] = fz_toreal(fz_arrayget(obj, i));
}
obj = fz_dictgets(dict, "BBox");
if (fz_isarray(obj))
{
shade->bbox = pdf_torect(obj);
pdf_logshade("bbox [%g %g %g %g]\n",
shade->bbox.x0, shade->bbox.y0,
shade->bbox.x1, shade->bbox.y1);
}
switch(type)
{
case 1:
error = pdf_loadtype1shade(shade, xref, dict, ref);
if (error) goto cleanup;
break;
case 2:
error = pdf_loadtype2shade(shade, xref, dict, ref);
if (error) goto cleanup;
break;
case 3:
error = pdf_loadtype3shade(shade, xref, dict, ref);
if (error) goto cleanup;
break;
case 4:
error = pdf_loadtype4shade(shade, xref, dict, ref);
if (error) goto cleanup;
break;
case 5:
error = pdf_loadtype5shade(shade, xref, dict, ref);
if (error) goto cleanup;
break;
case 6:
error = pdf_loadtype6shade(shade, xref, dict, ref);
if (error) goto cleanup;
break;
case 7:
error = pdf_loadtype7shade(shade, xref, dict, ref);
if (error) goto cleanup;
break;
default:
fz_warn("syntaxerror: unknown shading type: %d", type);
break;
};
pdf_logshade("}\n");
*shadep = shade;
return nil;
cleanup:
fz_dropshade(shade);
return error;
}
int
copyPdfFile(
soPdfFile* inFile,
soPdfFile* outFile
)
{
fz_error *error;
int pageTreeNum, pageTreeGen;
assert(inFile != NULL);
assert(outFile != NULL);
//
// Process every page in the source file
//
{
printf("\nProcessing input page : ");
for (int pageNo = 0; pageNo < pdf_getpagecount(inFile->pageTree); pageNo++)
{
displayPageNumber(pageNo + 1, !pageNo);
// Get the page object from the source
fz_obj *pageRef = inFile->pageTree->pref[pageNo];
fz_obj *pageObj = pdf_getpageobject(inFile->pageTree, pageNo);
//
// Process the page. Each page can be split into up-to 3 pages
//
fz_rect bbRect[3];
error = processPage(inFile, pageNo, bbRect, 3);
if (error)
return soPdfError(error);
for (int ctr = 0; ctr < 3; ctr++)
{
// Check if this was a blank page
if (fz_isemptyrect(bbRect[ctr]))
break;
//
// copy the source page dictionary entry. The way this is done is basically
// by making a copy of the page dict object in the source file, and adding
// the copy in the source file. Then the copied page dict object is
// referenced and added to the destination file.
//
// This convoluted procedure is done because the copy is done by pdf_transplant
// function that accepts a source and destination. Whatever is referenced by
// destination object is deep copied
//
// allocate an object id and generation id in source file
//
// There is a bug in mupdf where the object allocation returns
// 0 oid and 0 gid when the input pdf file has iref stream
// so to work around the issue, we wrap the pdf_allocojbect
// in a for loop 10 times to get the number
//
int sNum, sGen, tries;
for (tries = 0; tries < 10; tries++)
{
error = pdf_allocobject(inFile->xref, &sNum, &sGen);
if (error)
return soPdfError(error);
// If sNum is non zero then the allocation was successful
if (sNum != 0)
break;
pdf_updateobject(inFile->xref, sNum, sGen, pageObj);
}
// If we didn't succeed even after 10 tries then this file
// is not going to work.
if (tries >= 10)
return soPdfError(fz_throw("cannot allocate object because of mupdf bug"));
// make a deep copy of the original page dict
fz_obj *pageObj2;
error = fz_deepcopydict(&pageObj2, pageObj);
if (error)
return soPdfError(error);
// update the source file with the duplicate page object
pdf_updateobject(inFile->xref, sNum, sGen, pageObj2);
fz_dropobj(pageObj2);
// create an indirect reference to the page object
fz_obj *pageRef2;
error = fz_newindirect(&pageRef2, sNum, sGen);
if (error)
return soPdfError(error);
// delete the parent dictionary entry
// Do we need to delete any other dictionary entry
// like annot, tabs, metadata, etc
fz_dictdels(pageObj2, "Parent");
// Set the media box
setPageMediaBox(inFile->xref, pageObj2, bbRect[ctr]);
// Set the rotation based on input
switch(p_mode)
{
// no rotation if fit height
case FitHeight:
case Fit2xHeight:
break;
// rotate -90 deg if fit width
case Fit2xWidth:
case FitWidth:
setPageRotate(pageObj2, p_reverseLandscape ? 90 : -90);
break;
case SmartFitHeight:
case SmartFitWidth:
default:
return soPdfError(fz_throw("Mode(%d) not yet implemented.", p_mode));
break;
}
// push the indirect reference to the destination list for copy by pdf_transplant
error = fz_arraypush(outFile->editobjs, pageRef2);
if (error)
return soPdfError(error);
}
}
}
// flush the objects into destination from source
{
fz_obj *results;
int outPages;
printf("\nCopying output page : ");
error = pdf_transplant(outFile->xref, inFile->xref, &results, outFile->editobjs);
if (error)
return soPdfError(error);
outPages = fz_arraylen(results);
for (int ctr = 0; ctr < outPages; ctr++)
{
displayPageNumber(ctr + 1, !ctr);
error = fz_arraypush(outFile->pagelist, fz_arrayget(results,
p_reverseLandscape ? outPages - 1 - ctr : ctr));
if (error)
return soPdfError(error);
}
fz_dropobj(results);
}
// flush page tree
// Create page tree and add back-links
{
fz_obj *pageTreeObj;
fz_obj *pageTreeRef;
// allocate a new object in out file for pageTree object
error = pdf_allocobject(outFile->xref, &pageTreeNum, &pageTreeGen);
if (error)
return soPdfError(error);
// Create a page tree object
error = fz_packobj(&pageTreeObj, "<</Type/Pages/Count %i/Kids %o>>",
fz_arraylen(outFile->pagelist), outFile->pagelist);
if (error)
return soPdfError(error);
// Update the xref entry with the pageTree object
pdf_updateobject(outFile->xref, pageTreeNum, pageTreeGen, pageTreeObj);
fz_dropobj(pageTreeObj);
// Create a reference to the pageTree object
error = fz_newindirect(&pageTreeRef, pageTreeNum, pageTreeGen);
if (error)
return soPdfError(error);
//
// For every page in the output file, update the parent entry
//
for (int ctr = 0; ctr < fz_arraylen(outFile->pagelist); ctr++)
{
fz_obj *pageObj;
int num = fz_tonum(fz_arrayget(outFile->pagelist, ctr));
int gen = fz_togen(fz_arrayget(outFile->pagelist, ctr));
// Get the page object from xreft
error = pdf_loadobject(&pageObj, outFile->xref, num, gen);
if (error)
return soPdfError(error);
// Update the parent entry in the page dictionary
error = fz_dictputs(pageObj, "Parent", pageTreeRef);
if (error)
return soPdfError(error);
// Update the entry with the updated page object
pdf_updateobject(outFile->xref, num, gen, pageObj);
fz_dropobj(pageObj);
}
}
// Create catalog and root entries
{
fz_obj *catObj, *infoObj;
int rootNum, rootGen;
int infoNum, infoGen;
//
// Copy the info catalog to the destination
// alloc an object id and gen id in destination file
error = pdf_allocobject(outFile->xref, &infoNum, &infoGen);
if (error)
return soPdfError(error);
// make a deep copy of the original page dict
error = fz_deepcopydict(&infoObj, inFile->xref->info);
if (error)
return soPdfError(error);
// update the dest file with object
pdf_updateobject(outFile->xref, infoNum, infoGen, infoObj);
outFile->xref->info = infoObj;
fz_dropobj(infoObj);
//
// root/catalog object creation
error = pdf_allocobject(outFile->xref, &rootNum, &rootGen);
if (error)
return soPdfError(error);
error = fz_packobj(&catObj, "<</Type/Catalog /Pages %r>>", pageTreeNum, pageTreeGen);
if (error)
return soPdfError(error);
pdf_updateobject(outFile->xref, rootNum, rootGen, catObj);
fz_dropobj(catObj);
// Create trailer
error = fz_packobj(&outFile->xref->trailer, "<</Root %r /Info %r>>",
rootNum, rootGen, infoNum, infoGen);
if (error)
return soPdfError(error);
}
// Update the info in the target file and save the xref
printf("\nSaving.\n");
error = setPageInfo(inFile, outFile);
if (error)
return soPdfError(error);
error = pdf_savexref(outFile->xref, outFile->fileName, NULL);
if (error)
return soPdfError(error);
if (g_errorCount != 0)
{
printf("\nFollowing issues encounted were ignored.\n\n");
for (int ctr = g_errorCount - 1; ctr >= 0; ctr--)
soPdfError(g_errorList[ctr]);
}
printf("\nSaved.\n");
return 0;
}
static fz_error
loadsimplefont(pdf_fontdesc **fontdescp, pdf_xref *xref, fz_obj *dict)
{
fz_error error;
fz_obj *descriptor;
fz_obj *encoding;
fz_obj *widths;
unsigned short *etable = nil;
pdf_fontdesc *fontdesc;
fz_bbox bbox;
FT_Face face;
FT_CharMap cmap;
int kind;
int symbolic;
char *basefont;
char *fontname;
char *estrings[256];
char ebuffer[256][32];
int i, k, n;
int fterr;
basefont = fz_toname(fz_dictgets(dict, "BaseFont"));
fontname = cleanfontname(basefont);
/* Load font file */
fontdesc = pdf_newfontdesc();
pdf_logfont("load simple font (%d %d R) ptr=%p {\n", fz_tonum(dict), fz_togen(dict), fontdesc);
pdf_logfont("basefont %s -> %s\n", basefont, fontname);
descriptor = fz_dictgets(dict, "FontDescriptor");
if (descriptor)
error = pdf_loadfontdescriptor(fontdesc, xref, descriptor, nil, basefont);
else
error = pdf_loadbuiltinfont(fontdesc, fontname);
if (error)
goto cleanup;
face = fontdesc->font->ftface;
kind = ftkind(face);
pdf_logfont("ft name '%s' '%s'\n", face->family_name, face->style_name);
bbox.x0 = (face->bbox.xMin * 1000) / face->units_per_EM;
bbox.y0 = (face->bbox.yMin * 1000) / face->units_per_EM;
bbox.x1 = (face->bbox.xMax * 1000) / face->units_per_EM;
bbox.y1 = (face->bbox.yMax * 1000) / face->units_per_EM;
pdf_logfont("ft bbox [%d %d %d %d]\n", bbox.x0, bbox.y0, bbox.x1, bbox.y1);
if (bbox.x0 == bbox.x1)
fz_setfontbbox(fontdesc->font, -1000, -1000, 2000, 2000);
else
fz_setfontbbox(fontdesc->font, bbox.x0, bbox.y0, bbox.x1, bbox.y1);
/* Encoding */
symbolic = fontdesc->flags & 4;
if (face->num_charmaps > 0)
cmap = face->charmaps[0];
else
cmap = nil;
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 (cmap)
{
fterr = FT_Set_Charmap(face, cmap);
if (fterr)
fz_warn("freetype could not set cmap: %s", ft_errorstring(fterr));
}
else
fz_warn("freetype could not find any cmaps");
etable = fz_malloc(sizeof(unsigned short) * 256);
for (i = 0; i < 256; i++)
{
estrings[i] = nil;
etable[i] = 0;
}
encoding = fz_dictgets(dict, "Encoding");
if (encoding)
{
if (fz_isname(encoding))
pdf_loadencoding(estrings, fz_toname(encoding));
if (fz_isdict(encoding))
{
fz_obj *base, *diff, *item;
base = fz_dictgets(encoding, "BaseEncoding");
if (fz_isname(base))
pdf_loadencoding(estrings, fz_toname(base));
else if (!fontdesc->isembedded && !symbolic)
pdf_loadencoding(estrings, "StandardEncoding");
/* cf. http://bugs.ghostscript.com/show_bug.cgi?id=690615 and http://code.google.com/p/sumatrapdf/issues/detail?id=687 */
/* try to extract an encoding from the font or synthesize a likely one */
/* note: FT_Get_Name_Index fails for symbolic CFF fonts, so let them be encoded by index */
else if (!fontdesc->encoding && !ftloadt1encoding(face, estrings) && !(symbolic && !strcmp(FT_Get_X11_Font_Format(face), "CFF")))
pdf_loadencoding(estrings, "StandardEncoding");
diff = fz_dictgets(encoding, "Differences");
if (fz_isarray(diff))
{
n = fz_arraylen(diff);
k = 0;
for (i = 0; i < n; i++)
{
item = fz_arrayget(diff, i);
if (fz_isint(item))
k = fz_toint(item);
if (fz_isname(item))
estrings[k++] = fz_toname(item);
if (k < 0) k = 0;
if (k > 255) k = 255;
}
}
}
}
/* start with the builtin encoding */
for (i = 0; i < 256; i++)
etable[i] = ftcharindex(face, i);
/* encode by glyph name where we can */
if (kind == TYPE1)
{
pdf_logfont("encode type1/cff by strings\n");
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_lookupagl(estrings[i]);
char **aglnames = pdf_lookupaglnames(aglcode);
while (*aglnames)
{
etable[i] = FT_Get_Name_Index(face, *aglnames);
if (etable[i])
break;
aglnames++;
}
}
}
}
}
/* encode by glyph name where we can */
if (kind == TRUETYPE)
{
/* Unicode cmap */
if (!symbolic && face->charmap && face->charmap->platform_id == 3)
{
pdf_logfont("encode truetype via unicode\n");
for (i = 0; i < 256; i++)
{
if (estrings[i])
{
int aglcode = pdf_lookupagl(estrings[i]);
if (!aglcode)
etable[i] = FT_Get_Name_Index(face, estrings[i]);
else
etable[i] = ftcharindex(face, aglcode);
}
}
}
/* MacRoman cmap */
else if (!symbolic && face->charmap && face->charmap->platform_id == 1)
{
pdf_logfont("encode truetype via macroman\n");
for (i = 0; i < 256; i++)
{
if (estrings[i])
{
k = mrecode(estrings[i]);
if (k <= 0)
etable[i] = FT_Get_Name_Index(face, estrings[i]);
else
etable[i] = ftcharindex(face, k);
}
}
}
/* Symbolic cmap */
else
{
pdf_logfont("encode truetype symbolic\n");
for (i = 0; i < 256; i++)
{
if (estrings[i])
{
etable[i] = FT_Get_Name_Index(face, estrings[i]);
if (etable[i] == 0)
etable[i] = ftcharindex(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("freetype get glyph name (gid %d): %s", etable[i], ft_errorstring(fterr));
if (ebuffer[i][0])
estrings[i] = ebuffer[i];
}
else
{
estrings[i] = (char*) pdf_winansi[i]; /* discard const */
}
}
}
/* Prevent encoding Differences from being overwritten by reloading them */
/* cf. http://code.google.com/p/sumatrapdf/issues/detail?id=115 */
if (fz_isdict(encoding))
{
fz_obj *diff, *item;
diff = fz_dictgets(encoding, "Differences");
if (fz_isarray(diff))
{
n = fz_arraylen(diff);
k = 0;
for (i = 0; i < n; i++)
{
item = fz_arrayget(diff, i);
if (fz_isint(item))
k = fz_toint(item);
if (fz_isname(item))
estrings[k++] = fz_toname(item);
if (k < 0) k = 0;
if (k > 255) k = 255;
}
}
}
fontdesc->encoding = pdf_newidentitycmap(0, 1);
fontdesc->ncidtogid = 256;
fontdesc->cidtogid = etable;
error = pdf_loadtounicode(fontdesc, xref, estrings, nil, fz_dictgets(dict, "ToUnicode"));
if (error)
goto cleanup;
/* Widths */
pdf_setdefaulthmtx(fontdesc, fontdesc->missingwidth);
widths = fz_dictgets(dict, "Widths");
if (widths)
{
int first, last;
first = fz_toint(fz_dictgets(dict, "FirstChar"));
last = fz_toint(fz_dictgets(dict, "LastChar"));
if (first < 0 || last > 255 || first > last)
first = last = 0;
for (i = 0; i < last - first + 1; i++)
{
int wid = fz_toint(fz_arrayget(widths, i));
pdf_addhmtx(fontdesc, i + first, i + first, wid);
}
}
else
{
fterr = FT_Set_Char_Size(face, 1000, 1000, 72, 72);
if (fterr)
fz_warn("freetype set character size: %s", ft_errorstring(fterr));
for (i = 0; i < 256; i++)
{
pdf_addhmtx(fontdesc, i, i, ftwidth(fontdesc, i));
}
}
pdf_endhmtx(fontdesc);
pdf_logfont("}\n");
*fontdescp = fontdesc;
return fz_okay;
cleanup:
if (etable != fontdesc->cidtogid)
fz_free(etable);
pdf_dropfont(fontdesc);
return fz_rethrow(error, "cannot load simple font (%d %d R)", fz_tonum(dict), fz_togen(dict));
}
static fz_error
loadcidfont(pdf_fontdesc **fontdescp, pdf_xref *xref, fz_obj *dict, fz_obj *encoding, fz_obj *tounicode)
{
fz_error error;
fz_obj *widths;
fz_obj *descriptor;
pdf_fontdesc *fontdesc;
FT_Face face;
fz_bbox bbox;
int kind;
char collection[256];
char *basefont;
int i, k, fterr;
fz_obj *obj;
int dw;
/* Get font name and CID collection */
basefont = fz_toname(fz_dictgets(dict, "BaseFont"));
{
fz_obj *cidinfo;
char tmpstr[64];
int tmplen;
cidinfo = fz_dictgets(dict, "CIDSystemInfo");
if (!cidinfo)
return fz_throw("cid font is missing info");
obj = fz_dictgets(cidinfo, "Registry");
tmplen = MIN(sizeof tmpstr - 1, fz_tostrlen(obj));
memcpy(tmpstr, fz_tostrbuf(obj), tmplen);
tmpstr[tmplen] = '\0';
fz_strlcpy(collection, tmpstr, sizeof collection);
fz_strlcat(collection, "-", sizeof collection);
obj = fz_dictgets(cidinfo, "Ordering");
tmplen = MIN(sizeof tmpstr - 1, fz_tostrlen(obj));
memcpy(tmpstr, fz_tostrbuf(obj), tmplen);
tmpstr[tmplen] = '\0';
fz_strlcat(collection, tmpstr, sizeof collection);
}
/* Load font file */
fontdesc = pdf_newfontdesc();
pdf_logfont("load cid font (%d %d R) ptr=%p {\n", fz_tonum(dict), fz_togen(dict), fontdesc);
pdf_logfont("basefont %s\n", basefont);
pdf_logfont("collection %s\n", collection);
descriptor = fz_dictgets(dict, "FontDescriptor");
if (descriptor)
error = pdf_loadfontdescriptor(fontdesc, xref, descriptor, collection, basefont);
else
error = fz_throw("syntaxerror: missing font descriptor");
if (error)
goto cleanup;
face = fontdesc->font->ftface;
kind = ftkind(face);
bbox.x0 = (face->bbox.xMin * 1000) / face->units_per_EM;
bbox.y0 = (face->bbox.yMin * 1000) / face->units_per_EM;
bbox.x1 = (face->bbox.xMax * 1000) / face->units_per_EM;
bbox.y1 = (face->bbox.yMax * 1000) / face->units_per_EM;
pdf_logfont("ft bbox [%d %d %d %d]\n", bbox.x0, bbox.y0, bbox.x1, bbox.y1);
if (bbox.x0 == bbox.x1)
fz_setfontbbox(fontdesc->font, -1000, -1000, 2000, 2000);
else
fz_setfontbbox(fontdesc->font, bbox.x0, bbox.y0, bbox.x1, bbox.y1);
/* Encoding */
error = fz_okay;
if (fz_isname(encoding))
{
pdf_logfont("encoding /%s\n", fz_toname(encoding));
if (!strcmp(fz_toname(encoding), "Identity-H"))
fontdesc->encoding = pdf_newidentitycmap(0, 2);
else if (!strcmp(fz_toname(encoding), "Identity-V"))
fontdesc->encoding = pdf_newidentitycmap(1, 2);
else
error = pdf_loadsystemcmap(&fontdesc->encoding, fz_toname(encoding));
}
else if (fz_isindirect(encoding))
{
pdf_logfont("encoding %d %d R\n", fz_tonum(encoding), fz_togen(encoding));
error = pdf_loadembeddedcmap(&fontdesc->encoding, xref, encoding);
}
else
{
error = fz_throw("syntaxerror: font missing encoding");
}
if (error)
goto cleanup;
pdf_setfontwmode(fontdesc, pdf_getwmode(fontdesc->encoding));
pdf_logfont("wmode %d\n", pdf_getwmode(fontdesc->encoding));
if (kind == TRUETYPE)
{
fz_obj *cidtogidmap;
cidtogidmap = fz_dictgets(dict, "CIDToGIDMap");
if (fz_isindirect(cidtogidmap))
{
fz_buffer *buf;
pdf_logfont("cidtogidmap stream\n");
error = pdf_loadstream(&buf, xref, fz_tonum(cidtogidmap), fz_togen(cidtogidmap));
if (error)
goto cleanup;
fontdesc->ncidtogid = (buf->len) / 2;
fontdesc->cidtogid = fz_malloc(fontdesc->ncidtogid * sizeof(unsigned short));
for (i = 0; i < fontdesc->ncidtogid; i++)
fontdesc->cidtogid[i] = (buf->data[i * 2] << 8) + buf->data[i * 2 + 1];
fz_dropbuffer(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->ftsubstitute)
{
pdf_logfont("emulate ttf cidfont\n");
fterr = FT_Select_Charmap(face, ft_encoding_unicode);
if (fterr)
{
error = fz_throw("fonterror: no unicode cmap when emulating CID font: %s", ft_errorstring(fterr));
goto cleanup;
}
if (!strcmp(collection, "Adobe-CNS1"))
error = pdf_loadsystemcmap(&fontdesc->tottfcmap, "Adobe-CNS1-UCS2");
else if (!strcmp(collection, "Adobe-GB1"))
error = pdf_loadsystemcmap(&fontdesc->tottfcmap, "Adobe-GB1-UCS2");
else if (!strcmp(collection, "Adobe-Japan1"))
error = pdf_loadsystemcmap(&fontdesc->tottfcmap, "Adobe-Japan1-UCS2");
else if (!strcmp(collection, "Adobe-Japan2"))
error = pdf_loadsystemcmap(&fontdesc->tottfcmap, "Adobe-Japan2-UCS2");
else if (!strcmp(collection, "Adobe-Korea1"))
error = pdf_loadsystemcmap(&fontdesc->tottfcmap, "Adobe-Korea1-UCS2");
else
error = fz_okay;
if (error)
{
error = fz_rethrow(error, "cannot load system cmap %s", collection);
goto cleanup;
}
}
}
error = pdf_loadtounicode(fontdesc, xref, nil, collection, tounicode);
if (error)
goto cleanup;
/* Horizontal */
dw = 1000;
obj = fz_dictgets(dict, "DW");
if (obj)
dw = fz_toint(obj);
pdf_setdefaulthmtx(fontdesc, dw);
widths = fz_dictgets(dict, "W");
if (widths)
{
int c0, c1, w;
for (i = 0; i < fz_arraylen(widths); )
{
c0 = fz_toint(fz_arrayget(widths, i));
obj = fz_arrayget(widths, i + 1);
if (fz_isarray(obj))
{
for (k = 0; k < fz_arraylen(obj); k++)
{
w = fz_toint(fz_arrayget(obj, k));
pdf_addhmtx(fontdesc, c0 + k, c0 + k, w);
}
i += 2;
}
else
{
c1 = fz_toint(obj);
w = fz_toint(fz_arrayget(widths, i + 2));
pdf_addhmtx(fontdesc, c0, c1, w);
i += 3;
}
}
}
pdf_endhmtx(fontdesc);
/* Vertical */
if (pdf_getwmode(fontdesc->encoding) == 1)
{
int dw2y = 880;
int dw2w = -1000;
obj = fz_dictgets(dict, "DW2");
if (obj)
{
dw2y = fz_toint(fz_arrayget(obj, 0));
dw2w = fz_toint(fz_arrayget(obj, 1));
}
pdf_setdefaultvmtx(fontdesc, dw2y, dw2w);
widths = fz_dictgets(dict, "W2");
if (widths)
{
int c0, c1, w, x, y;
for (i = 0; i < fz_arraylen(widths); )
{
c0 = fz_toint(fz_arrayget(widths, i));
obj = fz_arrayget(widths, i + 1);
if (fz_isarray(obj))
{
for (k = 0; k < fz_arraylen(obj); k += 3)
{
w = fz_toint(fz_arrayget(obj, k + 0));
x = fz_toint(fz_arrayget(obj, k + 1));
y = fz_toint(fz_arrayget(obj, k + 2));
pdf_addvmtx(fontdesc, c0 + k, c0 + k, x, y, w);
}
i += 2;
}
else
{
c1 = fz_toint(obj);
w = fz_toint(fz_arrayget(widths, i + 2));
x = fz_toint(fz_arrayget(widths, i + 3));
y = fz_toint(fz_arrayget(widths, i + 4));
pdf_addvmtx(fontdesc, c0, c1, x, y, w);
i += 5;
}
}
}
pdf_endvmtx(fontdesc);
}
pdf_logfont("}\n");
*fontdescp = fontdesc;
return fz_okay;
cleanup:
pdf_dropfont(fontdesc);
return fz_rethrow(error, "cannot load cid font (%d %d R)", fz_tonum(dict), fz_togen(dict));
}
