Annex D (normative) Compatibility features [depr]

D.7 char* streams [depr.str.strstreams]

D.7.2 Class istrstream [depr.istrstream]

namespace std {
  class istrstream : public basic_istream<char> {
  public:
    explicit istrstream(const char* s);
    explicit istrstream(char* s);
    istrstream(const char* s, streamsize n);
    istrstream(char* s, streamsize n);
    virtual ~istrstream();

    strstreambuf* rdbuf() const;
    char* str();
  private:
    strstreambuf sb;  // exposition only
  };
}
1

The class istrstream supports the reading of 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:

  • (1.1)

    sb, the strstreambuf object.

D.7.2.1 istrstream constructors [depr.istrstream.cons]

explicit istrstream(const char* s); explicit istrstream(char* s);

1

Effects: Constructs an object of class istrstream, initializing the base class with istream(&sb) and initializing sb with strstreambuf(s,0)). s shall designate the first element of an ntbs.

istrstream(const char* s, streamsize n);

2

Effects: Constructs an object of class istrstream, initializing the base class with istream(&sb) and initializing sb with strstreambuf(s,n)). s shall designate the first element of an array whose length is n elements, and n shall be greater than zero.

D.7.2.2 Member functions [depr.istrstream.members]

strstreambuf* rdbuf() const;

1

Returns: const_cast<strstreambuf*>(&sb).

char* str();

2

Returns: rdbuf()->str().