#ifndef LYX_DOCSTREAM_H
#define LYX_DOCSTREAM_H
+#include "TexRow.h"
#include "support/docstring.h"
#if defined(_MSC_VER) && (_MSC_VER >= 1600)
\endcode, not \code
os << c;
\endcode . The latter will not output the character, but the code point
- as number. This is because we can't overload operator<< (our character
- type is not a real type but a typedef). Narrow characters of type char
- can be output as usual.
+ as number if USE_WCHAR_T is not defined. This is because we can't overload
+ operator<< (our character type is not always a real type but sometimes a
+ typedef). Narrow characters of type char can be output as usual.
*/
typedef std::basic_ostream<char_type> odocstream;
/// UCS4 input stringstream
typedef std::basic_istringstream<char_type> idocstringstream;
-/// UCS4 output stringstream
-typedef std::basic_ostringstream<char_type> odocstringstream;
+/// UCS4 output manipulator
+typedef odocstream & (*odocstream_manip)(odocstream &);
+
+/** Wrapper class for odocstream.
+ This class is used to automatically count the lines of the exported latex
+ code and also to ensure that no blank lines may be inadvertently output.
+ To this end, use the special variables "breakln" and "safebreakln" as if
+ they were iomanip's to ensure that the next output will start at the
+ beginning of a line. Using "breakln", a '\n' char will be output if needed,
+ while using "safebreakln", "%\n" will be output if needed.
+ The class also records the last output character and can tell whether
+ a paragraph break was just output.
+ */
+
+class otexstream {
+public:
+ ///
+ otexstream(odocstream & os, TexRow & texrow)
+ : os_(os), texrow_(texrow), canbreakline_(false),
+ protectspace_(false), parbreak_(true), lastchar_(0) {}
+ ///
+ odocstream & os() { return os_; }
+ ///
+ TexRow & texrow() { return texrow_; }
+ ///
+ void put(char_type const & c);
+ ///
+ void canBreakLine(bool breakline) { canbreakline_ = breakline; }
+ ///
+ bool canBreakLine() const { return canbreakline_; }
+ ///
+ void protectSpace(bool protectspace) { protectspace_ = protectspace; }
+ ///
+ bool protectSpace() const { return protectspace_; }
+ ///
+ void lastChar(char_type const & c)
+ {
+ parbreak_ = (!canbreakline_ && c == '\n');
+ canbreakline_ = (c != '\n');
+ lastchar_ = c;
+ }
+ ///
+ char_type lastChar() const { return lastchar_; }
+ ///
+ bool afterParbreak() const { return parbreak_; }
+private:
+ ///
+ odocstream & os_;
+ ///
+ TexRow & texrow_;
+ ///
+ bool canbreakline_;
+ ///
+ bool protectspace_;
+ ///
+ bool parbreak_;
+ ///
+ char_type lastchar_;
+};
+
+/// Helper structs for breaking a line
+struct BreakLine {
+ char n;
+};
+
+struct SafeBreakLine {
+ char n;
+};
+
+extern BreakLine breakln;
+extern SafeBreakLine safebreakln;
+
+///
+otexstream & operator<<(otexstream &, BreakLine);
+///
+otexstream & operator<<(otexstream &, SafeBreakLine);
+///
+otexstream & operator<<(otexstream &, odocstream_manip);
+///
+otexstream & operator<<(otexstream &, docstring const &);
+///
+otexstream & operator<<(otexstream &, std::string const &);
+///
+otexstream & operator<<(otexstream &, char const *);
+///
+otexstream & operator<<(otexstream &, char);
+///
+template <typename Type>
+otexstream & operator<<(otexstream & ots, Type value);
/// Helper struct for changing stream encoding
struct SetEnc {