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151 lines
3.4 KiB
C++
151 lines
3.4 KiB
C++
// -*- C++ -*-
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/**
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* \file texstream.h
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Enrico Forestieri
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*
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* Full author contact details are available in file CREDITS.
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*/
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#ifndef LYX_TEXSTREAM_H
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#define LYX_TEXSTREAM_H
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#include "support/docstream.h"
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#include "support/unique_ptr.h"
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namespace lyx {
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class TexRow;
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// declared below
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class otexstringstream;
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/** Wrapper class for odocstream.
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This class is used to automatically count the lines of the exported latex
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code.
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*/
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class otexrowstream {
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public:
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///
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explicit otexrowstream(odocstream & os, bool enable = true);
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/// defaulted
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~otexrowstream();
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///
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odocstream & os() { return os_; }
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///
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TexRow & texrow() { return *texrow_; }
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///
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unique_ptr<TexRow> releaseTexRow();
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///
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void put(char_type const & c);
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///
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void append(docstring const & str, TexRow texrow);
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private:
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///
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odocstream & os_;
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///
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unique_ptr<TexRow> texrow_;
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};
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///
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otexrowstream & operator<<(otexrowstream &, odocstream_manip);
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///
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otexrowstream & operator<<(otexrowstream &, docstring const &);
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///
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otexrowstream & operator<<(otexrowstream &, std::string const &);
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///
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otexrowstream & operator<<(otexrowstream &, char const *);
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///
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otexrowstream & operator<<(otexrowstream &, char);
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///
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template <typename Type>
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otexrowstream & operator<<(otexrowstream & ots, Type value);
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/** Subclass for otexrowstream.
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This class is used to ensure that no blank lines may be inadvertently output.
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To this end, use the special variables "breakln" and "safebreakln" as if
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they were iomanip's to ensure that the next output will start at the
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beginning of a line. Using "breakln", a '\n' char will be output if needed,
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while using "safebreakln", "%\n" will be output if needed.
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The class also records the last output character and can tell whether
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a paragraph break was just output.
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*/
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class otexstream : public otexrowstream {
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public:
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///
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explicit otexstream(odocstream & os, bool enable = true)
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: otexrowstream(os, enable), canbreakline_(false),
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protectspace_(false), parbreak_(true), lastchar_(0) {}
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///
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void put(char_type const & c);
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///
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void canBreakLine(bool breakline) { canbreakline_ = breakline; }
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///
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bool canBreakLine() const { return canbreakline_; }
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///
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void protectSpace(bool protectspace) { protectspace_ = protectspace; }
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///
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bool protectSpace() const { return protectspace_; }
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///
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void lastChar(char_type const & c)
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{
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parbreak_ = (!canbreakline_ && c == '\n');
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canbreakline_ = (c != '\n');
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lastchar_ = c;
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}
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///
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char_type lastChar() const { return lastchar_; }
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///
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bool afterParbreak() const { return parbreak_; }
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private:
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///
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bool canbreakline_;
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///
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bool protectspace_;
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///
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bool parbreak_;
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///
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char_type lastchar_;
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};
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/// Helper structs for breaking a line
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struct BreakLine {
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char n;
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};
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struct SafeBreakLine {
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char n;
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};
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extern BreakLine breakln;
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extern SafeBreakLine safebreakln;
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///
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otexstream & operator<<(otexstream &, BreakLine);
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///
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otexstream & operator<<(otexstream &, SafeBreakLine);
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///
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otexstream & operator<<(otexstream &, odocstream_manip);
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///
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otexstream & operator<<(otexstream &, docstring const &);
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///
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otexstream & operator<<(otexstream &, std::string const &);
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///
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otexstream & operator<<(otexstream &, char const *);
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///
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otexstream & operator<<(otexstream &, char);
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///
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template <typename Type>
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otexstream & operator<<(otexstream & ots, Type value);
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}
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#endif
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