wxString wxHtmlFilterHTML::ReadFile(const wxFSFile& file) const
{
wxInputStream *s = file.GetStream();
wxString doc;
if (s == NULL)
{
wxLogError(_("Cannot open HTML document: %s"), file.GetLocation().c_str());
return wxEmptyString;
}
// NB: We convert input file to wchar_t here in Unicode mode, based on
// either Content-Type header or <meta> tags. In ANSI mode, we don't
// do it as it is done by wxHtmlParser (for this reason, we add <meta>
// tag if we used Content-Type header).
#if wxUSE_UNICODE
int charsetPos;
if ((charsetPos = file.GetMimeType().Find(wxT("; charset="))) != wxNOT_FOUND)
{
wxString charset = file.GetMimeType().Mid(charsetPos + 10);
wxCSConv conv(charset);
ReadString(doc, s, conv);
}
else
{
size_t size = s->GetSize();
wxCharBuffer buf( size+1 );
s->Read( buf.data(), size );
*(buf.data() + size) = 0;
wxString tmpdoc( buf, wxConvISO8859_1);
wxString charset = wxHtmlParser::ExtractCharsetInformation(tmpdoc);
if (charset.empty())
doc = tmpdoc;
else
{
wxCSConv conv(charset);
doc = wxString( buf, conv );
}
}
#else // !wxUSE_UNICODE
ReadString(doc, s, wxConvLibc);
// add meta tag if we obtained this through http:
if (!file.GetMimeType().empty())
{
wxString hdr;
wxString mime = file.GetMimeType();
hdr.Printf(wxT("<meta http-equiv=\"Content-Type\" content=\"%s\">"), mime.c_str());
return hdr+doc;
}
#endif
return doc;
}
bool wxHtmlFilterHTML::CanRead(const wxFSFile& file) const
{
// return (file.GetMimeType() == "text/html");
// This is true in most case but some page can return:
// "text/html; char-encoding=...."
// So we use Find instead
return (file.GetMimeType().Find(wxT("text/html")) == 0);
}
bool wxHtmlFilterImage::CanRead(const wxFSFile& file) const
{
return (file.GetMimeType().Left(6) == wxT("image/"));
}