void EbookController::ExtractPageAnchors()
{
if (pageAnchorIds || pageAnchorIdxs) {
CrashIf(!pageAnchorIds || !pageAnchorIdxs);
return;
}
pageAnchorIds = new WStrVec();
pageAnchorIdxs = new Vec<int>();
ScopedMem<WCHAR> epubPagePath;
int fb2TitleCount = 0;
size_t len;
const char *data = doc.GetHtmlData(len);
HtmlPullParser parser(data, len);
HtmlToken *tok;
while ((tok = parser.Next()) != nullptr && !tok->IsError()) {
if (!tok->IsStartTag() && !tok->IsEmptyElementEndTag())
continue;
AttrInfo *attr = tok->GetAttrByName("id");
if (!attr && Tag_A == tok->tag && doc.Type() != Doc_Fb2)
attr = tok->GetAttrByName("name");
if (attr) {
ScopedMem<WCHAR> id(str::conv::FromUtf8(attr->val, attr->valLen));
pageAnchorIds->Append(str::Format(L"%s#%s", epubPagePath ? epubPagePath : L"", id.Get()));
pageAnchorIdxs->Append((int)(tok->GetReparsePoint() - parser.Start()));
}
// update EPUB page paths and create an anchor per chapter
if (Tag_Pagebreak == tok->tag &&
(attr = tok->GetAttrByName("page_path")) != nullptr &&
str::StartsWith(attr->val + attr->valLen, "\" page_marker />")) {
CrashIf(doc.Type() != Doc_Epub);
epubPagePath.Set(str::conv::FromUtf8(attr->val, attr->valLen));
pageAnchorIds->Append(str::Dup(epubPagePath));
pageAnchorIdxs->Append((int)(tok->GetReparsePoint() - parser.Start()));
}
// create FB2 title anchors (cf. Fb2Doc::ParseToc)
if (Tag_Title == tok->tag && tok->IsStartTag() && Doc_Fb2 == doc.Type()) {
ScopedMem<WCHAR> id(str::Format(TEXT(FB2_TOC_ENTRY_MARK) L"%d", ++fb2TitleCount));
pageAnchorIds->Append(id.StealData());
pageAnchorIdxs->Append((int)(tok->GetReparsePoint() - parser.Start()));
}
}
}
