/*
* Load predefined CMap from system.
*/
fz_error
pdf_loadsystemcmap(pdf_cmap **cmapp, char *cmapname)
{
fz_error error;
pdf_cmap *usecmap;
pdf_cmap *cmap;
int i;
pdf_logfont("loading system cmap %s\n", cmapname);
for (i = 0; pdf_cmaptable[i]; i++)
{
if (!strcmp(cmapname, pdf_cmaptable[i]->cmapname))
{
cmap = pdf_cmaptable[i];
if (cmap->usecmapname[0] && !cmap->usecmap)
{
error = pdf_loadsystemcmap(&usecmap, cmap->usecmapname);
if (error)
return fz_rethrow(error, "could not load usecmap: %s", cmap->usecmapname);
pdf_setusecmap(cmap, usecmap);
}
*cmapp = cmap;
return fz_okay;
}
}
return fz_throw("no builtin cmap file: %s", cmapname);
}
/*
* Load predefined CMap from system.
*/
fz_error
pdf_loadsystemcmap(pdf_cmap **cmapp, char *cmapname)
{
fz_error error;
fz_stream *stream;
pdf_cmap *usecmap;
pdf_cmap *cmap;
unsigned char *data;
unsigned int len;
int i;
pdf_logfont("loading system cmap %s\n", cmapname);
error = pdf_getcmapbuffer(cmapname, &data, &len);
if(error)
return fz_rethrow(error, "no builtin cmap file: %s", cmapname);
stream = fz_openrmemory(data, len);
error = pdf_parsecmap(&cmap, stream);
fz_dropstream(stream);
if(error)
return fz_rethrow(error, "cannot parse cmap data");
if (cmap->usecmapname[0] && !cmap->usecmap)
{
pdf_logfont("charmap depends on other charmap (%s), loading it\n", cmap->usecmapname);
error = pdf_loadsystemcmap(&usecmap, cmap->usecmapname);
if (error)
return fz_rethrow(error, "could not load usecmap: %s", cmap->usecmapname);
pdf_setusecmap(cmap, usecmap);
}
*cmapp = cmap;
return fz_okay;
}
/*
* Load CMap stream in PDF file
*/
fz_error
pdf_loadembeddedcmap(pdf_cmap **cmapp, pdf_xref *xref, fz_obj *stmref)
{
fz_error error = fz_okay;
fz_obj *stmobj;
fz_stream *file = nil;
pdf_cmap *cmap = nil;
pdf_cmap *usecmap;
fz_obj *wmode;
fz_obj *obj;
if ((*cmapp = pdf_finditem(xref->store, PDF_KCMAP, stmref)))
{
pdf_keepcmap(*cmapp);
return fz_okay;
}
pdf_logfont("load embedded cmap (%d %d R) {\n", fz_tonum(stmref), fz_togen(stmref));
stmobj = fz_resolveindirect(stmref);
error = pdf_openstream(&file, xref, fz_tonum(stmref), fz_togen(stmref));
if (error)
{
error = fz_rethrow(error, "cannot open cmap stream");
goto cleanup;
}
error = pdf_parsecmap(&cmap, file);
if (error)
{
error = fz_rethrow(error, "cannot parse cmap stream");
goto cleanup;
}
fz_dropstream(file);
wmode = fz_dictgets(stmobj, "WMode");
if (fz_isint(wmode))
{
pdf_logfont("wmode %d\n", wmode);
pdf_setwmode(cmap, fz_toint(wmode));
}
obj = fz_dictgets(stmobj, "UseCMap");
if (fz_isname(obj))
{
pdf_logfont("usecmap /%s\n", fz_toname(obj));
error = pdf_loadsystemcmap(&usecmap, fz_toname(obj));
if (error)
{
error = fz_rethrow(error, "cannot load system usecmap '%s'", fz_toname(obj));
goto cleanup;
}
pdf_setusecmap(cmap, usecmap);
pdf_dropcmap(usecmap);
}
else if (fz_isindirect(obj))
{
pdf_logfont("usecmap (%d %d R)\n", fz_tonum(obj), fz_togen(obj));
error = pdf_loadembeddedcmap(&usecmap, xref, obj);
if (error)
{
error = fz_rethrow(error, "cannot load embedded usecmap");
goto cleanup;
}
pdf_setusecmap(cmap, usecmap);
pdf_dropcmap(usecmap);
}
pdf_logfont("}\n");
error = pdf_storeitem(xref->store, PDF_KCMAP, stmref, cmap);
if (error)
{
error = fz_rethrow(error, "cannot store cmap resource");
goto cleanup;
}
*cmapp = cmap;
return fz_okay;
cleanup:
if (file)
fz_dropstream(file);
if (cmap)
pdf_dropcmap(cmap);
return error; /* already rethrown */
}
