DocTocItem *MobiEngineImpl::GetTocTree()
{
if (!tocReparsePoint)
return NULL;
EbookTocItem *root = NULL;
ScopedMem<WCHAR> itemText;
ScopedMem<WCHAR> itemLink;
int itemLevel = 0;
int idCounter = 0;
// there doesn't seem to be a standard for Mobi ToCs, so we try to
// determine the author's intentions by looking at commonly used tags
HtmlPullParser parser(tocReparsePoint, str::Len(tocReparsePoint));
HtmlToken *tok;
while ((tok = parser.Next()) && !tok->IsError()) {
if (itemLink && tok->IsText()) {
ScopedMem<WCHAR> linkText(str::conv::FromHtmlUtf8(tok->s, tok->sLen));
if (itemText)
itemText.Set(str::Join(itemText, L" ", linkText));
else
itemText.Set(linkText.StealData());
}
else if (!tok->IsTag())
continue;
else if (Tag_Mbp_Pagebreak == tok->tag)
break;
else if (!itemLink && tok->IsStartTag() && Tag_A == tok->tag) {
AttrInfo *attr = tok->GetAttrByName("filepos");
if (!attr)
attr = tok->GetAttrByName("href");
if (attr)
itemLink.Set(str::conv::FromHtmlUtf8(attr->val, attr->valLen));
}
else if (itemLink && tok->IsEndTag() && Tag_A == tok->tag) {
PageDestination *dest = NULL;
if (!itemText) {
itemLink.Set(NULL);
continue;
}
if (IsExternalUrl(itemLink))
dest = new SimpleDest2(0, RectD(), itemLink.StealData());
else
dest = GetNamedDest(itemLink);
EbookTocItem *item = new EbookTocItem(itemText.StealData(), dest);
item->id = ++idCounter;
item->open = itemLevel <= 2;
AppendTocItem(root, item, itemLevel);
itemLink.Set(NULL);
}
else if (Tag_Blockquote == tok->tag || Tag_Ul == tok->tag || Tag_Ol == tok->tag) {
if (tok->IsStartTag())
itemLevel++;
else if (tok->IsEndTag() && itemLevel > 0)
itemLevel--;
}
}
return root;
}
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()));
}
}
}
static void Test00(const char *s, HtmlToken::TokenType expectedType) {
HtmlPullParser parser(s, str::Len(s));
HtmlToken *t = parser.Next();
assert(t->type == expectedType);
assert(t->NameIs("p"));
assert(Tag_P == t->tag);
AttrInfo *a = t->GetAttrByName("a1");
assert(a->NameIs("a1"));
assert(a->ValIs(">"));
a = t->GetAttrByName("foo");
assert(a->NameIs("foo"));
assert(a->ValIs("bar"));
a = t->GetAttrByName("nope");
assert(!a);
t = parser.Next();
assert(!t);
}
// cf. http://www.w3.org/TR/html4/charset.html#h-5.2.2
static UINT ExtractHttpCharset(const char *html, size_t htmlLen)
{
if (!strstr(html, "charset="))
return 0;
HtmlPullParser parser(html, min(htmlLen, 1024));
HtmlToken *tok;
while ((tok = parser.Next()) && !tok->IsError()) {
if (tok->tag != Tag_Meta)
continue;
AttrInfo *attr = tok->GetAttrByName("http-equiv");
if (!attr || !attr->ValIs("Content-Type"))
continue;
attr = tok->GetAttrByName("content");
ScopedMem<char> mimetype, charset;
if (!attr || !str::Parse(attr->val, attr->valLen, "%S;%_charset=%S", &mimetype, &charset))
continue;
static struct {
const char *name;
UINT codepage;
} codepages[] = {
{ "ISO-8859-1", 1252 }, { "Latin1", 1252 }, { "CP1252", 1252 }, { "Windows-1252", 1252 },
{ "ISO-8859-2", 28592 }, { "Latin2", 28592 },
{ "CP1251", 1251 }, { "Windows-1251", 1251 }, { "KOI8-R", 20866 },
{ "shift-jis", 932 }, { "x-euc", 932 }, { "euc-kr", 949 },
{ "Big5", 950 }, { "GB2312", 936 },
{ "UTF-8", CP_UTF8 },
};
for (int i = 0; i < dimof(codepages); i++) {
if (str::EqI(charset, codepages[i].name))
return codepages[i].codepage;
}
break;
}
return 0;
}
