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00048 #ifndef __SGI_STL_STRSTREAM
00049 #define __SGI_STL_STRSTREAM
00050
00051 #include "backward_warning.h"
00052 #include <iosfwd>
00053 #include <ios>
00054 #include <istream>
00055 #include <ostream>
00056 #include <string>
00057
00058 namespace std
00059 {
00060
00061
00062 class strstreambuf : public basic_streambuf<char, char_traits<char> >
00063 {
00064 public:
00065
00066 typedef char_traits<char> _Traits;
00067 typedef basic_streambuf<char, _Traits> _Base;
00068
00069 public:
00070
00071 explicit strstreambuf(streamsize __initial_capacity = 0);
00072 strstreambuf(void* (*__alloc)(size_t), void (*__free)(void*));
00073
00074 strstreambuf(char* __get, streamsize __n, char* __put = 0);
00075 strstreambuf(signed char* __get, streamsize __n, signed char* __put = 0);
00076 strstreambuf(unsigned char* __get, streamsize __n, unsigned char* __put=0);
00077
00078 strstreambuf(const char* __get, streamsize __n);
00079 strstreambuf(const signed char* __get, streamsize __n);
00080 strstreambuf(const unsigned char* __get, streamsize __n);
00081
00082 virtual ~strstreambuf();
00083
00084 public:
00085 void freeze(bool = true);
00086 char* str();
00087 int pcount() const;
00088
00089 protected:
00090 virtual int_type overflow(int_type __c = _Traits::eof());
00091 virtual int_type pbackfail(int_type __c = _Traits::eof());
00092 virtual int_type underflow();
00093 virtual _Base* setbuf(char* __buf, streamsize __n);
00094 virtual pos_type seekoff(off_type __off, ios_base::seekdir __dir,
00095 ios_base::openmode __mode
00096 = ios_base::in | ios_base::out);
00097 virtual pos_type seekpos(pos_type __pos, ios_base::openmode __mode
00098 = ios_base::in | ios_base::out);
00099
00100 private:
00101
00102 char* _M_alloc(size_t);
00103 void _M_free(char*);
00104
00105
00106 void _M_setup(char* __get, char* __put, streamsize __n);
00107
00108 private:
00109
00110 void* (*_M_alloc_fun)(size_t);
00111 void (*_M_free_fun)(void*);
00112
00113 bool _M_dynamic : 1;
00114 bool _M_frozen : 1;
00115 bool _M_constant : 1;
00116 };
00117
00118
00119 class istrstream : public basic_istream<char>
00120 {
00121 public:
00122 explicit istrstream(char*);
00123 explicit istrstream(const char*);
00124 istrstream(char* , streamsize);
00125 istrstream(const char*, streamsize);
00126 virtual ~istrstream();
00127
00128 strstreambuf* rdbuf() const;
00129 char* str();
00130
00131 private:
00132 strstreambuf _M_buf;
00133 };
00134
00135
00136 class ostrstream : public basic_ostream<char>
00137 {
00138 public:
00139 ostrstream();
00140 ostrstream(char*, int, ios_base::openmode = ios_base::out);
00141 virtual ~ostrstream();
00142
00143 strstreambuf* rdbuf() const;
00144 void freeze(bool = true);
00145 char* str();
00146 int pcount() const;
00147
00148 private:
00149 strstreambuf _M_buf;
00150 };
00151
00152
00153 class strstream : public basic_iostream<char>
00154 {
00155 public:
00156 typedef char char_type;
00157 typedef char_traits<char>::int_type int_type;
00158 typedef char_traits<char>::pos_type pos_type;
00159 typedef char_traits<char>::off_type off_type;
00160
00161 strstream();
00162 strstream(char*, int, ios_base::openmode = ios_base::in | ios_base::out);
00163 virtual ~strstream();
00164
00165 strstreambuf* rdbuf() const;
00166 void freeze(bool = true);
00167 int pcount() const;
00168 char* str();
00169
00170 private:
00171 strstreambuf _M_buf;
00172 };
00173 }
00174 #endif