Cmake build: Prepare for hardening use of external programs

[lyx.git] / src / texstream.h

diff --git a/src/texstream.h b/src/texstream.h
index 282d210163189bb5e0a93bf816e2ca2b652bebf3..e5450ce7417a53a84b77672fcd69225d56c6b4ec 100644 (file)
--- a/src/texstream.h
+++ b/src/texstream.h
@@ -12,14 +12,62 @@
 #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 and also to ensure that no blank lines may be inadvertently output.
+    code.
+  */
+
+class otexrowstream {
+public:
+       ///
+       explicit otexrowstream(odocstream & os);
+       /// defaulted
+       ~otexrowstream();
+       ///
+       odocstream & os() { return os_; }
+       ///
+       TexRow & texrow() { return *texrow_; }
+       ///
+       unique_ptr<TexRow> releaseTexRow();
+       ///
+       void put(char_type const & c);
+       ///
+       void append(TexString ts);
+private:
+       ///
+       odocstream & os_;
+       ///
+       unique_ptr<TexRow> texrow_;
+};
+
+///
+otexrowstream & operator<<(otexrowstream &, odocstream_manip);
+///
+otexrowstream & operator<<(otexrowstream &, TexString);
+///
+otexrowstream & operator<<(otexrowstream &, docstring const &);
+///
+otexrowstream & operator<<(otexrowstream &, std::string const &);
+///
+otexrowstream & operator<<(otexrowstream &, char const *);
+///
+otexrowstream & operator<<(otexrowstream &, char);
+///
+template <typename Type>
+otexrowstream & operator<<(otexrowstream & ots, Type value);
+
+
+/** Subclass for otexrowstream.
+    This class is used 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,
@@ -28,19 +76,17 @@ namespace lyx {
     a paragraph break was just output.
   */
 
-class otexstream {
+class otexstream : public otexrowstream {
 public:
        ///
-       otexstream(odocstream & os, TexRow & texrow)
-               : os_(os), texrow_(texrow), canbreakline_(false),
+       explicit otexstream(odocstream & os)
+               : otexrowstream(os), canbreakline_(false),
                  protectspace_(false), parbreak_(true), lastchar_(0) {}
        ///
-       odocstream & os() { return os_; }
-       ///
-       TexRow & texrow() { return texrow_; }
-       ///
        void put(char_type const & c);
        ///
+       void append(TexString ts);
+       ///
        void canBreakLine(bool breakline) { canbreakline_ = breakline; }
        ///
        bool canBreakLine() const { return canbreakline_; }
@@ -60,10 +106,6 @@ public:
        ///
        bool afterParbreak() const { return parbreak_; }
 private:
-       ///
-       odocstream & os_;
-       ///
-       TexRow & texrow_;
        ///
        bool canbreakline_;
        ///
@@ -74,6 +116,25 @@ private:
        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;
@@ -93,6 +154,8 @@ otexstream & operator<<(otexstream &, SafeBreakLine);
 ///
 otexstream & operator<<(otexstream &, odocstream_manip);
 ///
+otexstream & operator<<(otexstream &, TexString);
+///
 otexstream & operator<<(otexstream &, docstring const &);
 ///
 otexstream & operator<<(otexstream &, std::string const &);
@@ -104,6 +167,7 @@ otexstream & operator<<(otexstream &, char);
 template <typename Type>
 otexstream & operator<<(otexstream & ots, Type value);
 
+
 }
 
 #endif