#define OUTPUT_XHTML_H
#include "LayoutEnums.h"
+
#include "support/docstream.h"
+#include "support/shared_ptr.h"
#include "support/strfwd.h"
#include <deque>
std::string attr_;
};
+
+// trivial struct for output of newlines
+struct CR{};
+
} // namespace html
class XHTMLStream {
///
explicit XHTMLStream(odocstream & os);
///
- void cr();
- ///
odocstream & os() { return os_; }
///
// int & tab() { return tab_; }
/// \return false if there are open font tags we could not close.
/// because they are "blocked" by open non-font tags on the stack.
bool closeFontTags();
+ /// call at start of paragraph. sets a mark so we know what tags
+ /// to close at the end.
+ void startParagraph(bool keep_empty);
+ /// call at end of paragraph to clear that mark. note that this
+ /// will also close any tags still open.
+ void endParagraph();
///
XHTMLStream & operator<<(docstring const &);
///
///
XHTMLStream & operator<<(html::CompTag const &);
///
+ XHTMLStream & operator<<(html::CR const &);
+ ///
enum EscapeSettings {
ESCAPE_NONE,
ESCAPE_AND, // meaning &
/// Sets what we are going to escape on the NEXT write.
/// Everything is reset for the next time.
XHTMLStream & operator<<(EscapeSettings);
+#if 0
+ /// This routine is for debugging the tag stack, etc. Code
+ /// for it is disabled by default, however, so you will need
+ /// to enable it if you want to use it.
+ void dumpTagStack(std::string const & msg) const;
+#endif
private:
///
void clearTagDeque();
///
- bool isTagOpen(std::string const &);
+ bool isTagOpen(std::string const &) const;
///
- void writeError(std::string const &);
+ bool isTagPending(std::string const &) const;
///
- odocstream & os_;
+ void writeError(std::string const &) const;
///
- typedef std::deque<html::StartTag> TagStack;
- /// holds start tags until we know there is content in them.
- TagStack pending_tags_;
- /// remembers the history, so we can make sure we nest properly.
- TagStack tag_stack_;
+ odocstream & os_;
///
EscapeSettings escape_;
+ // What we would really like to do here is simply use a
+ // deque<StartTag>. But we want to store both StartTags and
+ // sub-classes thereof on this stack, which means we run into the
+ // so-called polymorphic class problem with the STL. We therefore have
+ // to use a deque<StartTag *>, which leads to the question who will
+ // own these pointers and how they will be deleted, so we use shared
+ // pointers.
+ ///
+ typedef shared_ptr<html::StartTag> TagPtr;
+ typedef std::deque<TagPtr> TagDeque;
+ ///
+ template <typename T>
+ shared_ptr<T> makeTagPtr(T const & tag)
+ { return shared_ptr<T>(new T(tag)); }
+ ///
+ TagDeque pending_tags_;
+ ///
+ TagDeque tag_stack_;
};
///