Annex D (normative) Compatibility features [depr]

D.14 char* streams [depr.str.strstreams]

D.14.5 Class strstream [depr.strstream]

D.14.5.1 General [depr.strstream.general]

namespace std { class strstream : public basic_iostream<char> { public: // types using char_type = char; using int_type = char_traits<char>::int_type; using pos_type = char_traits<char>::pos_type; using off_type = char_traits<char>::off_type; // constructors/destructor strstream(); strstream(char* s, int n, ios_base::openmode mode = ios_base::in|ios_base::out); virtual ~strstream(); // members strstreambuf* rdbuf() const; void freeze(bool freezefl = true); int pcount() const; char* str(); private: strstreambuf sb; // exposition only }; }
The class strstream supports reading and writing from objects of class strstreambuf.
It supplies a strstreambuf object to control the associated array object.
For the sake of exposition, the maintained data is presented here as:
  • sb, the strstreambuf object.

D.14.5.2 strstream constructors [depr.strstream.cons]

strstream();
Effects: Initializes the base class with iostream(&sb).
strstream(char* s, int n, ios_base::openmode mode = ios_base::in|ios_base::out);
Effects: Initializes the base class with iostream(&sb), and sb with one of the two constructors:
  • If (mode & app) == 0, then s shall designate the first element of an array of n elements.
    The constructor is strstreambuf(s,n,s).
  • If (mode & app) != 0, then s shall designate the first element of an array of n elements that contains an ntbs whose first element is designated by s.
    The constructor is strstreambuf(s,n,s + std​::​strlen(s)).

D.14.5.3 strstream destructor [depr.strstream.dest]

virtual ~strstream();
Effects: Destroys an object of class strstream.

D.14.5.4 strstream operations [depr.strstream.oper]

strstreambuf* rdbuf() const;
Returns: const_­cast<strstreambuf*>(&sb).
void freeze(bool freezefl = true);
Effects: Calls rdbuf()->freeze(freezefl).
char* str();
Returns: rdbuf()->str().
int pcount() const;
Returns: rdbuf()->pcount().