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extern/STLport/5.2.1/stlport/stl/_strstream.h

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+/*
+ * Copyright (c) 1999
+ * Silicon Graphics Computer Systems, Inc.
+ *
+ * Copyright (c) 1999
+ * Boris Fomitchev
+ *
+ * This material is provided "as is", with absolutely no warranty expressed
+ * or implied. Any use is at your own risk.
+ *
+ * Permission to use or copy this software for any purpose is hereby granted
+ * without fee, provided the above notices are retained on all copies.
+ * Permission to modify the code and to distribute modified code is granted,
+ * provided the above notices are retained, and a notice that the code was
+ * modified is included with the above copyright notice.
+ *
+ */
+#ifndef _STLP_INTERNAL_STRSTREAM
+#define _STLP_INTERNAL_STRSTREAM
+
+#ifndef _STLP_INTERNAL_STREAMBUF
+#  include <stl/_streambuf.h>
+#endif
+
+#ifndef _STLP_INTERNAL_ISTREAM
+#  include <stl/_istream.h>              // Includes <ostream>, <ios>, <iosfwd>
+#endif
+
+#ifndef _STLP_INTERNAL_STRING_H
+#  include <stl/_string.h>
+#endif
+
+_STLP_BEGIN_NAMESPACE
+
+#ifndef _STLP_USE_NAMESPACES
+#  define strstream _STLP_strstream
+#  define ostrstream _STLP_ostrstream
+#  define istrstream _STLP_istrstream
+#  define strstreambuf _STLP_strstreambuf
+#endif
+
+//----------------------------------------------------------------------
+// Class strstreambuf, a streambuf class that manages an array of char.
+// Note that this class is not a template.
+
+class _STLP_CLASS_DECLSPEC strstreambuf : public basic_streambuf<char, char_traits<char> > {
+public:                         // Types.
+  typedef char_traits<char>              _Traits;
+  typedef basic_streambuf<char, char_traits<char> > _Base;
+  typedef void* (*__alloc_fn)(size_t);
+  typedef void (*__free_fn)(void*);
+public:                         // Constructor, destructor
+
+  explicit strstreambuf(streamsize _Initial_capacity = 0);
+
+  strstreambuf(__alloc_fn, __free_fn);
+
+  strstreambuf(char* __get, streamsize __n, char* __put = 0);
+  strstreambuf(signed char* __get, streamsize __n, signed char* __put = 0);
+  strstreambuf(unsigned char* __get, streamsize __n, unsigned char* __put=0);
+
+  strstreambuf(const char* __get, streamsize __n);
+  strstreambuf(const signed char* __get, streamsize __n);
+  strstreambuf(const unsigned char* __get, streamsize __n);
+
+  virtual ~strstreambuf();
+
+public:                         // strstreambuf operations.
+  void freeze(bool = true);
+  char* str();
+  int pcount() const;
+
+protected:                      // Overridden virtual member functions.
+  virtual int_type overflow(int_type __c  = _Traits::eof());
+  virtual int_type pbackfail(int_type __c = _Traits::eof());
+  virtual int_type underflow();
+  virtual _Base* setbuf(char* __buf, streamsize __n);
+  virtual pos_type seekoff(off_type __off, ios_base::seekdir __dir,
+                           ios_base::openmode __mode
+                                      = ios_base::in | ios_base::out);
+  virtual pos_type seekpos(pos_type __pos, ios_base::openmode __mode
+                                      = ios_base::in | ios_base::out);
+
+private:                        // Helper functions.
+  // Dynamic allocation, possibly using _M_alloc_fun and _M_free_fun.
+  char* _M_alloc(size_t);
+  void  _M_free(char*);
+
+  // Helper function used in constructors.
+  void _M_setup(char* __get, char* __put, streamsize __n);
+private:                        // Data members.
+  __alloc_fn _M_alloc_fun;
+  __free_fn  _M_free_fun;
+  bool _M_dynamic  : 1;
+  bool _M_frozen   : 1;
+  bool _M_constant : 1;
+};
+
+//----------------------------------------------------------------------
+// Class istrstream, an istream that manages a strstreambuf.
+
+class _STLP_CLASS_DECLSPEC istrstream : public basic_istream<char, char_traits<char> > {
+public:
+  explicit istrstream(char*);
+  explicit istrstream(const char*);
+  istrstream(char* , streamsize);
+  istrstream(const char*, streamsize);
+  virtual ~istrstream();
+
+  strstreambuf* rdbuf() const;
+  char* str();
+
+private:
+  strstreambuf _M_buf;
+};
+
+//----------------------------------------------------------------------
+// Class ostrstream
+
+class _STLP_CLASS_DECLSPEC ostrstream : public basic_ostream<char, char_traits<char> >
+{
+public:
+  ostrstream();
+  ostrstream(char*, int, ios_base::openmode = ios_base::out);
+  virtual ~ostrstream();
+
+  strstreambuf* rdbuf() const;
+  void freeze(bool = true);
+  char* str();
+  int pcount() const;
+
+private:
+  strstreambuf _M_buf;
+};
+
+//----------------------------------------------------------------------
+// Class strstream
+
+class _STLP_CLASS_DECLSPEC strstream : public basic_iostream<char, char_traits<char> > {
+public:
+  typedef char                        char_type;
+  typedef char_traits<char>::int_type int_type;
+  typedef char_traits<char>::pos_type pos_type;
+  typedef char_traits<char>::off_type off_type;
+
+  strstream();
+  strstream(char*, int, ios_base::openmode = ios_base::in | ios_base::out);
+  virtual ~strstream();
+
+  strstreambuf* rdbuf() const;
+  void freeze(bool = true);
+  int pcount() const;
+  char* str();
+
+private:
+  strstreambuf _M_buf;
+
+  //explicitely defined as private to avoid warnings:
+  strstream(strstream const&);
+  strstream& operator = (strstream const&);
+};
+
+_STLP_END_NAMESPACE
+
+#endif /* _STLP_INTERNAL_STRSTREAM */