X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Foutput_xhtml.h;h=a2eac95ab437881bf06926839fe04e786aae94ac;hb=0f5c34b8abcaf5bf4ae2df665b2f5aed40229502;hp=e58e4a8db49f2f4720a921d85da0ed5c2a47d755;hpb=32fabb3f6ae58033290bcb2fea553fa5f97249c6;p=lyx.git

diff --git a/src/output_xhtml.h b/src/output_xhtml.h
index e58e4a8db4..a2eac95ab4 100644
--- a/src/output_xhtml.h
+++ b/src/output_xhtml.h
@@ -12,23 +12,303 @@
 #ifndef OUTPUT_XHTML_H
 #define OUTPUT_XHTML_H
 
+#include "LayoutEnums.h"
+
+#include "support/docstream.h"
 #include "support/strfwd.h"
 
+#include <deque>
+#include <memory>
+
+
 namespace lyx {
 
 class Buffer;
 class OutputParams;
-class ParagraphList;
+class Text;
+
+// Inspiration for the *Tag structs and for XHTMLStream
+// came from MathStream and its cousins.
+
+namespace html {
+
+struct FontTag;
+struct EndFontTag;
+
+/// Attributes will be escaped automatically and so should NOT
+/// be escaped before being passed to the constructor.
+struct StartTag
+{
+	///
+	explicit StartTag(std::string const & tag) : tag_(tag), keepempty_(false) {}
+	///
+	explicit StartTag(std::string const & tag, std::string const & attr,
+		bool keepempty = false)
+		: tag_(tag), attr_(attr), keepempty_(keepempty) {}
+	///
+	virtual ~StartTag() {}
+	/// <tag_ attr_>
+	virtual docstring writeTag() const;
+	/// </tag_>
+	virtual docstring writeEndTag() const;
+	///
+	virtual FontTag const * asFontTag() const { return 0; }
+	///
+	virtual bool operator==(StartTag const & rhs) const
+		{ return tag_ == rhs.tag_; }
+	///
+	virtual bool operator!=(StartTag const & rhs) const
+		{ return !(*this == rhs); }
+	///
+	virtual bool operator==(FontTag const & rhs) const;
+	///
+	std::string tag_;
+	///
+	std::string attr_;
+	/// whether to keep things like "<tag></tag>" or discard them
+	/// you would want this for td, e.g, but maybe not for a div
+	bool keepempty_;
+};
+
+
+///
+struct EndTag
+{
+	///
+	explicit EndTag(std::string tag) : tag_(tag) {}
+	///
+	virtual ~EndTag() {}
+	/// </tag_>
+	virtual docstring writeEndTag() const;
+	///
+	bool operator==(StartTag const & rhs) const
+		{ return tag_ == rhs.tag_; }
+	///
+	bool operator!=(StartTag const & rhs) const
+		{ return !(*this == rhs); }
+	///
+	virtual EndFontTag const * asFontTag() const { return 0; }
+	///
+	std::string tag_;
+};
+
+
+/// Tags like <img />
+/// Attributes will be escaped automatically and so should NOT
+/// be escaped before being passed to the constructor.
+struct CompTag
+{
+	///
+	explicit CompTag(std::string const & tag)
+		: tag_(tag) {}
+	///
+	explicit CompTag(std::string const & tag, std::string const & attr)
+		: tag_(tag), attr_(attr) {}
+	/// <tag_ attr_ />
+	docstring writeTag() const;
+	///
+	std::string tag_;
+	///
+	std::string attr_;
+};
+
+
+/// A special case of StartTag, used exclusively for tags that wrap paragraphs.
+struct ParTag : public StartTag
+{
+	///
+	explicit ParTag(std::string const & tag, std::string const & attr,
+	       std::string const & parid)
+	  : StartTag(tag, attr), parid_(parid)
+	{}
+	///
+	~ParTag() {}
+	///
+	docstring writeTag() const;
+	/// the "magic par label" for this paragraph
+	std::string parid_;
+};
+
 
 ///
-void xhtmlParagraphs(ParagraphList const & subset,
+enum FontTypes {
+	// ranges
+	FT_EMPH,
+	FT_NOUN,
+	FT_UBAR,
+	FT_DBAR,
+	FT_WAVE,
+	FT_SOUT,
+	// bold
+	FT_BOLD,
+	// shapes
+	FT_UPRIGHT,
+	FT_ITALIC,
+	FT_SLANTED,
+	FT_SMALLCAPS,
+	// families
+	FT_ROMAN,
+	FT_SANS,
+	FT_TYPE,
+	// sizes
+	FT_SIZE_TINY,
+	FT_SIZE_SCRIPT,
+	FT_SIZE_FOOTNOTE,
+	FT_SIZE_SMALL,
+	FT_SIZE_NORMAL,
+	FT_SIZE_LARGE,
+	FT_SIZE_LARGER,
+	FT_SIZE_LARGEST,
+	FT_SIZE_HUGE,
+	FT_SIZE_HUGER,
+	FT_SIZE_INCREASE,
+	FT_SIZE_DECREASE
+};
+
+
+///
+struct FontTag : public StartTag
+{
+	///
+	explicit FontTag(FontTypes type);
+	///
+	FontTag const * asFontTag() const { return this; }
+	///
+	bool operator==(StartTag const &) const;
+	///
+	FontTypes font_type_;
+};
+
+
+///
+struct EndFontTag : public EndTag
+{
+	///
+	explicit EndFontTag(FontTypes type);
+	///
+	EndFontTag const * asFontTag() const { return this; }
+	///
+	FontTypes font_type_;
+};
+
+
+// trivial struct for output of newlines
+struct CR{};
+
+} // namespace html
+
+class XHTMLStream {
+public:
+	///
+	explicit XHTMLStream(odocstream & os);
+	///
+	odocstream & os() { return os_; }
+	///
+	// int & tab() { return tab_; }
+	/// closes any font tags that are eligible to be closed,
+	/// i.e., last on the tag_stack_.
+	/// \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<<(const char *);
+	///
+	XHTMLStream & operator<<(char_type);
+	///
+	XHTMLStream & operator<<(int);
+	///
+	XHTMLStream & operator<<(char);
+	///
+	XHTMLStream & operator<<(html::StartTag const &);
+	///
+	XHTMLStream & operator<<(html::EndTag const &);
+	///
+	XHTMLStream & operator<<(html::CompTag const &);
+	///
+	XHTMLStream & operator<<(html::ParTag const &);
+	///
+	XHTMLStream & operator<<(html::FontTag const &);
+	///
+	XHTMLStream & operator<<(html::CR const &);
+	///
+	enum EscapeSettings {
+		ESCAPE_NONE,
+		ESCAPE_AND, // meaning &
+		ESCAPE_ALL  // meaning <, >, &, at present
+	};
+	/// 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(html::StartTag const &) const;
+	///
+	bool isTagOpen(html::EndTag const &) const;
+	///
+	bool isTagPending(html::StartTag const &) const;
+	///
+	void writeError(std::string const &) const;
+	///
+	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 std::shared_ptr<html::StartTag> TagPtr;
+	typedef std::deque<TagPtr> TagDeque;
+	///
+	template <typename T>
+	TagPtr makeTagPtr(T const & tag) { return std::make_shared<T>(tag); }
+	///
+	TagDeque pending_tags_;
+	///
+	TagDeque tag_stack_;
+};
+
+///
+void xhtmlParagraphs(Text const & text,
 		       Buffer const & buf,
-		       odocstream & os,
+		       XHTMLStream & xs,
 		       OutputParams const & runparams);
 
+/// \return a string appropriate for setting alignment in CSS
+/// Does NOT return "justify" for "block"
+std::string alignmentToCSS(LyXAlignment align);
+
 namespace html {
-	docstring escapeChar(char_type c);
-}
+///
+docstring escapeChar(char_type c, XHTMLStream::EscapeSettings e);
+/// converts a string to a form safe for links, etc
+docstring htmlize(docstring const & str, XHTMLStream::EscapeSettings e);
+/// cleans \param str for use as an atttribute by replacing
+/// all non-alnum by "_"
+docstring cleanAttr(docstring const & str);
+/// \p c must be ASCII
+docstring escapeChar(char c, XHTMLStream::EscapeSettings e);
+
+} // namespace html
 } // namespace lyx
 
 #endif