Provide proper fallback if a bibliography processor is not found

[lyx.git] / src / texstream.h

diff --git a/src/texstream.h b/src/texstream.h
index c81bbf9a84891ad2832d5cae85f63c26936a234c..a14f84bf95fec38f64fe101b594c513a6d6532c9 100644 (file)
--- a/src/texstream.h
+++ b/src/texstream.h
@@ -12,11 +12,15 @@
 #ifndef LYX_TEXSTREAM_H
 #define LYX_TEXSTREAM_H
 
-#include "TexRow.h"
 #include "support/docstream.h"
+#include "support/unique_ptr.h"
 
 namespace lyx {
 
+class TexRow;
+struct TexString;
+
+
 /** Wrapper class for odocstream.
     This class is used to automatically count the lines of the exported latex
     code.
@@ -25,26 +29,31 @@ namespace lyx {
 class otexrowstream {
 public:
        ///
-       otexrowstream(odocstream & os, TexRow & texrow)
-               : os_(os), texrow_(texrow) {}
+       explicit otexrowstream(odocstream & os);
+       /// defaulted
+       ~otexrowstream();
        ///
        odocstream & os() { return os_; }
        ///
-       TexRow & texrow() { return texrow_; }
+       TexRow & texrow() { return *texrow_; }
+       ///
+       unique_ptr<TexRow> releaseTexRow();
        ///
        void put(char_type const & c);
        ///
-       void append(docstring const &, TexRow const &);
+       void append(TexString ts);
 private:
        ///
        odocstream & os_;
        ///
-       TexRow & texrow_;
+       unique_ptr<TexRow> texrow_;
 };
 
 ///
 otexrowstream & operator<<(otexrowstream &, odocstream_manip);
 ///
+otexrowstream & operator<<(otexrowstream &, TexString);
+///
 otexrowstream & operator<<(otexrowstream &, docstring const &);
 ///
 otexrowstream & operator<<(otexrowstream &, std::string const &);
@@ -70,12 +79,15 @@ otexrowstream & operator<<(otexrowstream & ots, Type value);
 class otexstream : public otexrowstream {
 public:
        ///
-       otexstream(odocstream & os, TexRow & texrow)
-               : otexrowstream(os, texrow), canbreakline_(false),
-                 protectspace_(false), parbreak_(true), lastchar_(0) {}
+       explicit otexstream(odocstream & os)
+               : otexrowstream(os), canbreakline_(false),
+                 protectspace_(false), terminate_command_(false),
+                 parbreak_(true), blankline_(true), lastchar_(0) {}
        ///
        void put(char_type const & c);
        ///
+       void append(TexString ts);
+       ///
        void canBreakLine(bool breakline) { canbreakline_ = breakline; }
        ///
        bool canBreakLine() const { return canbreakline_; }
@@ -84,9 +96,14 @@ public:
        ///
        bool protectSpace() const { return protectspace_; }
        ///
+       void terminateCommand(bool terminate) { terminate_command_ = terminate; }
+       ///
+       bool terminateCommand() const { return terminate_command_; }
+       ///
        void lastChar(char_type const & c)
        {
                parbreak_ = (!canbreakline_ && c == '\n');
+               blankline_ = ((!canbreakline_ && c == ' ') || c == '\n');
                canbreakline_ = (c != '\n');
                lastchar_ = c;
        }
@@ -94,17 +111,42 @@ public:
        char_type lastChar() const { return lastchar_; }
        ///
        bool afterParbreak() const { return parbreak_; }
+       ///
+       bool blankLine() const { return blankline_; }
 private:
        ///
        bool canbreakline_;
        ///
        bool protectspace_;
        ///
+       bool terminate_command_;
+       ///
        bool parbreak_;
        ///
+       bool blankline_;
+       ///
        char_type lastchar_;
 };
 
+
+/// because we need to pass ods_ to the base class
+struct otexstringstream_helper { odocstringstream ods_; };
+
+/// otexstringstream : a odocstringstream with tex/row correspondence
+class otexstringstream : otexstringstream_helper, public otexstream {
+public:
+       otexstringstream() : otexstringstream_helper(), otexstream(ods_) {}
+       ///
+       docstring str() const { return ods_.str(); }
+       ///
+       size_t length();
+       ///
+       bool empty() { return 0 == length(); }
+       /// move-returns the contents and reset the texstream
+       TexString release();
+};
+
+
 /// Helper structs for breaking a line
 struct BreakLine {
        char n;
@@ -114,16 +156,26 @@ struct SafeBreakLine {
        char n;
 };
 
+/// Helper structs for terminating a command
+struct TerminateCommand {
+       char n;
+};
+
 extern BreakLine breakln;
 extern SafeBreakLine safebreakln;
+extern TerminateCommand termcmd;
 
 ///
 otexstream & operator<<(otexstream &, BreakLine);
 ///
 otexstream & operator<<(otexstream &, SafeBreakLine);
 ///
+otexstream & operator<<(otexstream &, TerminateCommand);
+///
 otexstream & operator<<(otexstream &, odocstream_manip);
 ///
+otexstream & operator<<(otexstream &, TexString);
+///
 otexstream & operator<<(otexstream &, docstring const &);
 ///
 otexstream & operator<<(otexstream &, std::string const &);
@@ -135,6 +187,7 @@ otexstream & operator<<(otexstream &, char);
 template <typename Type>
 otexstream & operator<<(otexstream & ots, Type value);
 
-}
+
+} // namespace lyx
 
 #endif