- // an illegal tag for internal use
- static string const parsep_tag = "&LyX_parsep_tag&";
-}
-
-
-bool XHTMLStream::closeFontTags()
-{
- if (isTagPending(parsep_tag))
- // we haven't had any content
- return true;
-
- // this may be a useless check, since we ought at least to have
- // the parsep_tag. but it can't hurt too much to be careful.
- if (tag_stack_.empty())
- return true;
-
- // first, we close any open font tags we can close
- html::StartTag curtag = tag_stack_.back();
- while (html::isFontTag(curtag.tag_)) {
- os_ << curtag.asEndTag();
- tag_stack_.pop_back();
- if (tag_stack_.empty())
- // this probably shouldn't happen, since then the
- // font tags weren't in any other tag. but that
- // problem will likely be caught elsewhere.
- return true;
- curtag = tag_stack_.back();
- }
-
- if (curtag.tag_ == parsep_tag)
- return true;
-
- // so we've hit a non-font tag.
- writeError("Tags still open in closeFontTags(). Probably not a problem,\n"
- "but you might want to check these tags:");
- TagStack::const_reverse_iterator it = tag_stack_.rbegin();
- TagStack::const_reverse_iterator const en = tag_stack_.rend();
- for (; it != en; ++it) {
- string const tagname = it->tag_;
- if (tagname == parsep_tag)
- break;
- writeError(it->tag_);
- }
- return false;
-}
-
-
-void XHTMLStream::startParagraph(bool keep_empty)
-{
- pending_tags_.push_back(html::StartTag(parsep_tag));
- if (keep_empty)
- clearTagDeque();
-}
-
-
-void XHTMLStream::endParagraph()
-{
- if (isTagPending(parsep_tag)) {
- // this case is normal. it just means we didn't have content,
- // so the parsep_tag never got moved onto the tag stack.
- while (!pending_tags_.empty()) {
- // clear all pending tags up to and including the parsep tag.
- // note that we work from the back, because we want to get rid
- // of everything that hasn't been used.
- html::StartTag const cur_tag = pending_tags_.back();
- string const & tag = cur_tag.tag_;
- pending_tags_.pop_back();
- if (tag == parsep_tag)
- break;
- }
- return;
- }
-
- if (!isTagOpen(parsep_tag)) {
- writeError("No paragraph separation tag found in endParagraph().");
- return;
- }
-
- // this case is also normal, if the parsep tag is the last one
- // on the stack. otherwise, it's an error.
- while (!tag_stack_.empty()) {
- html::StartTag const cur_tag = tag_stack_.back();
- string const & tag = cur_tag.tag_;
- tag_stack_.pop_back();
- if (tag == parsep_tag)
- break;
- writeError("Tag `" + tag + "' still open at end of paragraph. Closing.");
- os_ << cur_tag.asEndTag();
- }
-}
-
-
-void XHTMLStream::clearTagDeque()
-{
- while (!pending_tags_.empty()) {
- html::StartTag const & tag = pending_tags_.front();
- if (tag.tag_ != parsep_tag)
- // tabs?
- os_ << tag.asTag();
- tag_stack_.push_back(tag);
- pending_tags_.pop_front();
- }
-}
-
-
-XHTMLStream & XHTMLStream::operator<<(docstring const & d)
-{
- clearTagDeque();
- os_ << html::htmlize(d, escape_);
- escape_ = ESCAPE_ALL;
- return *this;
-}
-
-
-XHTMLStream & XHTMLStream::operator<<(const char * s)
-{
- clearTagDeque();
- docstring const d = from_ascii(s);
- os_ << html::htmlize(d, escape_);
- escape_ = ESCAPE_ALL;
- return *this;
-}
-
-
-XHTMLStream & XHTMLStream::operator<<(char_type c)
-{
- clearTagDeque();
- os_ << html::escapeChar(c, escape_);
- escape_ = ESCAPE_ALL;
- return *this;
-}
-
-
-XHTMLStream & XHTMLStream::operator<<(char c)
-{
- clearTagDeque();
- string const d = html::escapeChar(c, escape_);
- escape_ = ESCAPE_ALL;
- return *this;
-}
-
-
-XHTMLStream & XHTMLStream::operator<<(int i)
-{
- clearTagDeque();
- os_ << i;
- escape_ = ESCAPE_ALL;
- return *this;
-}
-
-
-XHTMLStream & XHTMLStream::operator<<(EscapeSettings e)
-{
- escape_ = e;
- return *this;
-}
-
-
-XHTMLStream & XHTMLStream::operator<<(html::StartTag const & tag)
-{
- if (tag.tag_.empty())
- return *this;
- pending_tags_.push_back(tag);
- if (tag.keepempty_)
- clearTagDeque();
- return *this;
-}
-
-
-XHTMLStream & XHTMLStream::operator<<(html::CompTag const & tag)
-{
- if (tag.tag_.empty())
- return *this;
- clearTagDeque();
- // tabs?
- os_ << tag.asTag();
- *this << html::CR();
- return *this;
-}
-
-
-XHTMLStream & XHTMLStream::operator<<(html::CR const &)
-{
- // tabs?
- os_ << from_ascii("\n");
- return *this;
-}
-
-
-bool XHTMLStream::isTagOpen(string const & stag) const
-{
- TagStack::const_iterator sit = tag_stack_.begin();
- TagStack::const_iterator const sen = tag_stack_.end();
- for (; sit != sen; ++sit)
- if (sit->tag_ == stag)
- return true;
- return false;
-}
-
-
-bool XHTMLStream::isTagPending(string const & stag) const
-{
- TagStack::const_iterator sit = pending_tags_.begin();
- TagStack::const_iterator const sen = pending_tags_.end();
- for (; sit != sen; ++sit)
- if (sit->tag_ == stag)
- return true;
- return false;
-}
-
-
-// this is complicated, because we want to make sure that
-// everything is properly nested. the code ought to make
-// sure of that, but we won't assert (yet) if we run into
-// a problem. we'll just output error messages and try our
-// best to make things work.
-XHTMLStream & XHTMLStream::operator<<(html::EndTag const & etag)
-{
- if (etag.tag_.empty())
- return *this;
-
- // make sure there are tags to be closed
- if (tag_stack_.empty()) {
- writeError("Tried to close `" + etag.tag_
- + "' when no tags were open!");
- return *this;
- }
-
- // first make sure we're not closing an empty tag
- if (!pending_tags_.empty()) {
- html::StartTag const & stag = pending_tags_.back();
- if (etag.tag_ == stag.tag_) {
- // we have <tag></tag>, so we discard it and remove it
- // from the pending_tags_.
- pending_tags_.pop_back();
- return *this;
- }
- // there is a pending tag that isn't the one we are trying
- // to close.
- // is this tag itself pending?
- // non-const iterators because we may call erase().
- TagStack::iterator dit = pending_tags_.begin();
- TagStack::iterator const den = pending_tags_.end();
- for (; dit != den; ++dit) {
- if (dit->tag_ == etag.tag_) {
- // it was pending, so we just erase it
- writeError("Tried to close pending tag `" + etag.tag_
- + "' when other tags were pending. Last pending tag is `"
- + pending_tags_.back().tag_ + "'. Tag discarded.");
- pending_tags_.erase(dit);
- return *this;
- }
- }
- // so etag isn't itself pending. is it even open?
- if (!isTagOpen(etag.tag_)) {
- writeError("Tried to close `" + etag.tag_
- + "' when tag was not open. Tag discarded.");
- return *this;
- }
- // ok, so etag is open.
- // our strategy will be as below: we will do what we need to
- // do to close this tag.
- string estr = "Closing tag `" + etag.tag_
- + "' when other tags are pending. Discarded pending tags:\n";
- for (dit = pending_tags_.begin(); dit != den; ++dit)
- estr += dit->tag_ + "\n";
- writeError(estr);
- // clear the pending tags...
- pending_tags_.clear();
- // ...and then just fall through.
- }