[multiple changes]
2002-06-08 Paolo Carlini <pcarlini@unitus.it> * testsuite/backwards/strstream_members.cc: New. 2002-06-08 Benjamin Kosnik <bkoz@redhat.com> * include/backwards/strstream: Format. * src/strstream.cc: Format. 2002-06-08 Andreas Schwab <schwab@suse.de> * src/strstream.cc (strstreambuf::overflow): Set _M_buf, _M_buf_size and _M_buf_size_opt to the new buffer and size. From-SVN: r54375
This commit is contained in:
Benjamin Kosnik
parent
e362315840
commit
497e42fdf4
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@ -1,3 +1,17 @@
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2002-06-08 Paolo Carlini <pcarlini@unitus.it>
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* testsuite/backwards/strstream_members.cc: New.
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2002-06-08 Benjamin Kosnik <bkoz@redhat.com>
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* include/backwards/strstream: Format.
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* src/strstream.cc: Format.
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2002-06-08 Andreas Schwab <schwab@suse.de>
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* src/strstream.cc (strstreambuf::overflow): Set _M_buf,
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_M_buf_size and _M_buf_size_opt to the new buffer and size.
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2002-06-08 Benjamin Kosnik <bkoz@redhat.com>
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* config/os/generic/bits/ctype_noninline.h: Tweak format.
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@ -1,6 +1,6 @@
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// Backward-compat support -*- C++ -*-
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// Copyright (C) 2001 Free Software Foundation, Inc.
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// Copyright (C) 2001, 2002 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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@ -57,132 +57,118 @@
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namespace std
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{
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// Class strstreambuf, a streambuf class that manages an array of char.
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// Note that this class is not a template.
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class strstreambuf : public basic_streambuf<char, char_traits<char> >
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{
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public:
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// Types.
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typedef char_traits<char> _Traits;
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typedef basic_streambuf<char, _Traits> _Base;
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//----------------------------------------------------------------------
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// Class strstreambuf, a streambuf class that manages an array of char.
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// Note that this class is not a template.
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public:
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// Constructor, destructor
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explicit strstreambuf(streamsize __initial_capacity = 0);
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strstreambuf(void* (*__alloc)(size_t), void (*__free)(void*));
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class strstreambuf : public basic_streambuf<char, char_traits<char> >
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{
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public: // Types.
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typedef char_traits<char> _Traits;
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typedef basic_streambuf<char, _Traits> _Base;
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strstreambuf(char* __get, streamsize __n, char* __put = 0);
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strstreambuf(signed char* __get, streamsize __n, signed char* __put = 0);
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strstreambuf(unsigned char* __get, streamsize __n, unsigned char* __put=0);
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public: // Constructor, destructor
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explicit strstreambuf(streamsize __initial_capacity = 0);
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strstreambuf(void* (*__alloc)(size_t), void (*__free)(void*));
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strstreambuf(const char* __get, streamsize __n);
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strstreambuf(const signed char* __get, streamsize __n);
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strstreambuf(const unsigned char* __get, streamsize __n);
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strstreambuf(char* __get, streamsize __n, char* __put = 0);
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strstreambuf(signed char* __get, streamsize __n, signed char* __put = 0);
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strstreambuf(unsigned char* __get, streamsize __n, unsigned char* __put=0);
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virtual ~strstreambuf();
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strstreambuf(const char* __get, streamsize __n);
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strstreambuf(const signed char* __get, streamsize __n);
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strstreambuf(const unsigned char* __get, streamsize __n);
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public:
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void freeze(bool = true);
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char* str();
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int pcount() const;
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virtual ~strstreambuf();
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protected:
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virtual int_type overflow(int_type __c = _Traits::eof());
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virtual int_type pbackfail(int_type __c = _Traits::eof());
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virtual int_type underflow();
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virtual _Base* setbuf(char* __buf, streamsize __n);
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virtual pos_type seekoff(off_type __off, ios_base::seekdir __dir,
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ios_base::openmode __mode
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= ios_base::in | ios_base::out);
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virtual pos_type seekpos(pos_type __pos, ios_base::openmode __mode
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= ios_base::in | ios_base::out);
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public: // strstreambuf operations.
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void freeze(bool = true);
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char* str();
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int pcount() const;
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private:
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// Dynamic allocation, possibly using _M_alloc_fun and _M_free_fun.
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char* _M_alloc(size_t);
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void _M_free(char*);
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protected: // Overridden virtual member functions.
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virtual int_type overflow(int_type __c = _Traits::eof());
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virtual int_type pbackfail(int_type __c = _Traits::eof());
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virtual int_type underflow();
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virtual _Base* setbuf(char* __buf, streamsize __n);
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virtual pos_type seekoff(off_type __off, ios_base::seekdir __dir,
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ios_base::openmode __mode
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= ios_base::in | ios_base::out);
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virtual pos_type seekpos(pos_type __pos, ios_base::openmode __mode
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= ios_base::in | ios_base::out);
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// Helper function used in constructors.
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void _M_setup(char* __get, char* __put, streamsize __n);
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private: // Helper functions.
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// Dynamic allocation, possibly using _M_alloc_fun and _M_free_fun.
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char* _M_alloc(size_t);
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void _M_free(char*);
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private:
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// Data members.
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void* (*_M_alloc_fun)(size_t);
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void (*_M_free_fun)(void*);
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// Helper function used in constructors.
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void _M_setup(char* __get, char* __put, streamsize __n);
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bool _M_dynamic : 1;
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bool _M_frozen : 1;
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bool _M_constant : 1;
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};
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private: // Data members.
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void* (*_M_alloc_fun)(size_t);
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void (*_M_free_fun)(void*);
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// Class istrstream, an istream that manages a strstreambuf.
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class istrstream : public basic_istream<char>
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{
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public:
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explicit istrstream(char*);
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explicit istrstream(const char*);
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istrstream(char* , streamsize);
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istrstream(const char*, streamsize);
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virtual ~istrstream();
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bool _M_dynamic : 1;
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bool _M_frozen : 1;
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bool _M_constant : 1;
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};
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strstreambuf* rdbuf() const;
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char* str();
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//----------------------------------------------------------------------
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// Class istrstream, an istream that manages a strstreambuf.
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private:
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strstreambuf _M_buf;
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};
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class istrstream : public basic_istream<char>
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{
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public:
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explicit istrstream(char*);
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explicit istrstream(const char*);
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istrstream(char* , streamsize);
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istrstream(const char*, streamsize);
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virtual ~istrstream();
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// Class ostrstream
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class ostrstream : public basic_ostream<char>
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{
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public:
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ostrstream();
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ostrstream(char*, int, ios_base::openmode = ios_base::out);
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virtual ~ostrstream();
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strstreambuf* rdbuf() const;
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char* str();
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strstreambuf* rdbuf() const;
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void freeze(bool = true);
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char* str();
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int pcount() const;
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private:
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strstreambuf _M_buf;
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};
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private:
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strstreambuf _M_buf;
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};
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//----------------------------------------------------------------------
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// Class ostrstream
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// Class strstream
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class strstream : public basic_iostream<char>
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{
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public:
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typedef char char_type;
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typedef char_traits<char>::int_type int_type;
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typedef char_traits<char>::pos_type pos_type;
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typedef char_traits<char>::off_type off_type;
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class ostrstream : public basic_ostream<char>
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{
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public:
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ostrstream();
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ostrstream(char*, int, ios_base::openmode = ios_base::out);
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virtual ~ostrstream();
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strstream();
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strstream(char*, int, ios_base::openmode = ios_base::in | ios_base::out);
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virtual ~strstream();
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strstreambuf* rdbuf() const;
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void freeze(bool = true);
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char* str();
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int pcount() const;
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private:
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strstreambuf _M_buf;
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};
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//----------------------------------------------------------------------
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// Class strstream
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class strstream : public basic_iostream<char>
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{
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public:
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typedef char char_type;
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typedef char_traits<char>::int_type int_type;
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typedef char_traits<char>::pos_type pos_type;
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typedef char_traits<char>::off_type off_type;
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strstream();
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strstream(char*, int, ios_base::openmode = ios_base::in | ios_base::out);
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virtual ~strstream();
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strstreambuf* rdbuf() const;
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void freeze(bool = true);
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int pcount() const;
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char* str();
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private:
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strstreambuf _M_buf;
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};
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strstreambuf* rdbuf() const;
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void freeze(bool = true);
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int pcount() const;
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char* str();
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private:
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strstreambuf _M_buf;
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};
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} // namespace std
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#endif /* __SGI_STL_STRSTREAM */
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// Local Variables:
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// mode:C++
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// End:
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#endif
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@ -1,6 +1,6 @@
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// strstream definitions -*- C++ -*-
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// Copyright (C) 2001 Free Software Foundation
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// Copyright (C) 2001, 2002 Free Software Foundation
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//
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// This file is part of GNU CC.
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//
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@ -56,410 +56,369 @@
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namespace std
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{
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// strstreambuf constructor, destructor.
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strstreambuf::strstreambuf(streamsize initial_capacity)
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: _Base(),
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_M_alloc_fun(0), _M_free_fun(0),
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_M_dynamic(true), _M_frozen(false), _M_constant(false)
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{
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_M_buf_size = _M_buf_size_opt = max(initial_capacity, streamsize(16));
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_M_buf = _M_alloc(_M_buf_size);
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if (_M_buf)
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{
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setp(_M_buf, _M_buf + _M_buf_size);
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setg(_M_buf, _M_buf, _M_buf);
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}
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}
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strstreambuf::strstreambuf(void* (*alloc_f)(size_t), void (*free_f)(void*))
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: _Base(),
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_M_alloc_fun(alloc_f), _M_free_fun(free_f),
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_M_dynamic(true), _M_frozen(false), _M_constant(false)
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{
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_M_buf_size = _M_buf_size_opt = 16;
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_M_buf = _M_alloc(_M_buf_size);
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if (_M_buf)
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{
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setp(_M_buf, _M_buf + _M_buf_size);
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setg(_M_buf, _M_buf, _M_buf);
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}
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}
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strstreambuf::strstreambuf(char* get, streamsize n, char* put)
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: _Base(),
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_M_alloc_fun(0), _M_free_fun(0),
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_M_dynamic(false), _M_frozen(false), _M_constant(false)
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{
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_M_setup(get, put, n);
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}
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strstreambuf::strstreambuf(signed char* get, streamsize n, signed char* put)
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: _Base(),
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_M_alloc_fun(0), _M_free_fun(0),
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_M_dynamic(false), _M_frozen(false), _M_constant(false)
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{
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_M_setup(reinterpret_cast<char*>(get), reinterpret_cast<char*>(put), n);
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}
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strstreambuf::strstreambuf(unsigned char* get, streamsize n,
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unsigned char* put)
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: _Base(),
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_M_alloc_fun(0), _M_free_fun(0),
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_M_dynamic(false), _M_frozen(false), _M_constant(false)
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{
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_M_setup(reinterpret_cast<char*>(get), reinterpret_cast<char*>(put), n);
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}
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strstreambuf::strstreambuf(const char* get, streamsize n)
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: _Base(),
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_M_alloc_fun(0), _M_free_fun(0),
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_M_dynamic(false), _M_frozen(false), _M_constant(true)
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{
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_M_setup(const_cast<char*>(get), 0, n);
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}
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strstreambuf::strstreambuf(const signed char* get, streamsize n)
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: _Base(),
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_M_alloc_fun(0), _M_free_fun(0),
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_M_dynamic(false), _M_frozen(false), _M_constant(true)
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{
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_M_setup(reinterpret_cast<char*>(const_cast<signed char*>(get)), 0, n);
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}
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strstreambuf::strstreambuf(const unsigned char* get, streamsize n)
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: _Base(),
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_M_alloc_fun(0), _M_free_fun(0),
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_M_dynamic(false), _M_frozen(false), _M_constant(true)
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{
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_M_setup(reinterpret_cast<char*>(const_cast<unsigned char*>(get)), 0, n);
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}
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strstreambuf::~strstreambuf()
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{
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if (_M_dynamic && !_M_frozen)
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{
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char* p = this->eback();
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_M_free(p);
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if (p == _M_buf)
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_M_buf = 0;
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}
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if (_M_buf)
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_M_free(_M_buf);
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}
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void strstreambuf::freeze(bool frozenflag)
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{
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if (_M_dynamic)
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_M_frozen = frozenflag;
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}
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char* strstreambuf::str()
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{
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freeze(true);
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return eback();
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}
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int strstreambuf::pcount() const
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{
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return pptr() ? pptr() - pbase() : 0;
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}
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strstreambuf::int_type strstreambuf::overflow(int_type c) {
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if (c == traits_type::eof())
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return traits_type::not_eof(c);
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// Try to expand the buffer.
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if (pptr() == epptr() && _M_dynamic && !_M_frozen && !_M_constant) {
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ptrdiff_t old_size = epptr() - pbase();
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ptrdiff_t new_size = max(2 * old_size, ptrdiff_t(1));
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char* buf = _M_alloc(new_size);
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if (buf) {
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memcpy(buf, pbase(), old_size);
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char* old_buffer = pbase();
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bool reposition_get = false;
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ptrdiff_t old_get_offset;
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if (gptr() != 0) {
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reposition_get = true;
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old_get_offset = gptr() - eback();
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strstreambuf::strstreambuf(streamsize initial_capacity)
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: _Base(), _M_alloc_fun(0), _M_free_fun(0), _M_dynamic(true),
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_M_frozen(false), _M_constant(false)
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{
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_M_buf_size = _M_buf_size_opt = max(initial_capacity, streamsize(16));
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_M_buf = _M_alloc(_M_buf_size);
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if (_M_buf)
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{
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setp(_M_buf, _M_buf + _M_buf_size);
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setg(_M_buf, _M_buf, _M_buf);
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}
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setp(buf, buf + new_size);
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pbump(old_size);
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if (reposition_get)
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setg(buf, buf + old_get_offset, buf + max(old_get_offset, old_size));
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_M_free(old_buffer);
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}
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}
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if (pptr() != epptr()) {
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*pptr() = c;
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pbump(1);
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return c;
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}
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else
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return traits_type::eof();
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}
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strstreambuf::int_type strstreambuf::pbackfail(int_type c)
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{
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if (gptr() != eback()) {
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if (c == _Traits::eof()) {
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gbump(-1);
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return _Traits::not_eof(c);
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}
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else if (c == static_cast<int_type>(gptr()[-1])) { // KLUDGE
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gbump(-1);
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return c;
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}
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else if (!_M_constant) {
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gbump(-1);
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*gptr() = c;
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return c;
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}
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strstreambuf::strstreambuf(void* (*alloc_f)(size_t), void (*free_f)(void*))
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: _Base(), _M_alloc_fun(alloc_f), _M_free_fun(free_f), _M_dynamic(true),
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_M_frozen(false), _M_constant(false)
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{
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_M_buf_size = _M_buf_size_opt = 16;
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_M_buf = _M_alloc(_M_buf_size);
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if (_M_buf)
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{
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setp(_M_buf, _M_buf + _M_buf_size);
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setg(_M_buf, _M_buf, _M_buf);
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}
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}
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return _Traits::eof();
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}
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strstreambuf::strstreambuf(char* get, streamsize n, char* put)
|
||||
: _Base(), _M_alloc_fun(0), _M_free_fun(0), _M_dynamic(false),
|
||||
_M_frozen(false), _M_constant(false)
|
||||
{ _M_setup(get, put, n); }
|
||||
|
||||
strstreambuf::int_type strstreambuf::underflow()
|
||||
{
|
||||
if (gptr() == egptr() && pptr() && pptr() > egptr())
|
||||
setg(eback(), gptr(), pptr());
|
||||
strstreambuf::strstreambuf(signed char* get, streamsize n, signed char* put)
|
||||
: _Base(), _M_alloc_fun(0), _M_free_fun(0), _M_dynamic(false),
|
||||
_M_frozen(false), _M_constant(false)
|
||||
{ _M_setup(reinterpret_cast<char*>(get), reinterpret_cast<char*>(put), n); }
|
||||
|
||||
if (gptr() != egptr())
|
||||
return (unsigned char) *gptr();
|
||||
else
|
||||
strstreambuf::strstreambuf(unsigned char* get, streamsize n,
|
||||
unsigned char* put)
|
||||
: _Base(), _M_alloc_fun(0), _M_free_fun(0), _M_dynamic(false),
|
||||
_M_frozen(false), _M_constant(false)
|
||||
{ _M_setup(reinterpret_cast<char*>(get), reinterpret_cast<char*>(put), n); }
|
||||
|
||||
strstreambuf::strstreambuf(const char* get, streamsize n)
|
||||
: _Base(), _M_alloc_fun(0), _M_free_fun(0), _M_dynamic(false),
|
||||
_M_frozen(false), _M_constant(true)
|
||||
{ _M_setup(const_cast<char*>(get), 0, n); }
|
||||
|
||||
strstreambuf::strstreambuf(const signed char* get, streamsize n)
|
||||
: _Base(), _M_alloc_fun(0), _M_free_fun(0), _M_dynamic(false),
|
||||
_M_frozen(false), _M_constant(true)
|
||||
{ _M_setup(reinterpret_cast<char*>(const_cast<signed char*>(get)), 0, n); }
|
||||
|
||||
strstreambuf::strstreambuf(const unsigned char* get, streamsize n)
|
||||
: _Base(), _M_alloc_fun(0), _M_free_fun(0), _M_dynamic(false),
|
||||
_M_frozen(false), _M_constant(true)
|
||||
{ _M_setup(reinterpret_cast<char*>(const_cast<unsigned char*>(get)), 0, n); }
|
||||
|
||||
strstreambuf::~strstreambuf()
|
||||
{
|
||||
if (_M_dynamic && !_M_frozen)
|
||||
{
|
||||
char* p = this->eback();
|
||||
_M_free(p);
|
||||
if (p == _M_buf)
|
||||
_M_buf = 0;
|
||||
}
|
||||
if (_M_buf)
|
||||
_M_free(_M_buf);
|
||||
}
|
||||
|
||||
void
|
||||
strstreambuf::freeze(bool frozenflag)
|
||||
{
|
||||
if (_M_dynamic)
|
||||
_M_frozen = frozenflag;
|
||||
}
|
||||
|
||||
char*
|
||||
strstreambuf::str()
|
||||
{
|
||||
freeze(true);
|
||||
return eback();
|
||||
}
|
||||
|
||||
int
|
||||
strstreambuf::pcount() const
|
||||
{ return pptr() ? pptr() - pbase() : 0; }
|
||||
|
||||
strstreambuf::int_type
|
||||
strstreambuf::overflow(int_type c)
|
||||
{
|
||||
if (c == traits_type::eof())
|
||||
return traits_type::not_eof(c);
|
||||
|
||||
// Try to expand the buffer.
|
||||
if (pptr() == epptr() && _M_dynamic && !_M_frozen && !_M_constant)
|
||||
{
|
||||
ptrdiff_t old_size = epptr() - pbase();
|
||||
ptrdiff_t new_size = max(2 * old_size, ptrdiff_t(1));
|
||||
|
||||
char* buf = _M_alloc(new_size);
|
||||
if (buf)
|
||||
{
|
||||
memcpy(buf, pbase(), old_size);
|
||||
char* old_buffer = pbase();
|
||||
bool reposition_get = false;
|
||||
ptrdiff_t old_get_offset;
|
||||
if (gptr() != 0)
|
||||
{
|
||||
reposition_get = true;
|
||||
old_get_offset = gptr() - eback();
|
||||
}
|
||||
|
||||
_M_buf = buf;
|
||||
_M_buf_size = _M_buf_size_opt = new_size;
|
||||
setp(buf, buf + new_size);
|
||||
pbump(old_size);
|
||||
|
||||
if (reposition_get)
|
||||
setg(buf, buf + old_get_offset, buf +
|
||||
max(old_get_offset, old_size));
|
||||
|
||||
_M_free(old_buffer);
|
||||
}
|
||||
}
|
||||
|
||||
if (pptr() != epptr())
|
||||
{
|
||||
*pptr() = c;
|
||||
pbump(1);
|
||||
return c;
|
||||
}
|
||||
else
|
||||
return traits_type::eof();
|
||||
}
|
||||
|
||||
strstreambuf::int_type
|
||||
strstreambuf::pbackfail(int_type c)
|
||||
{
|
||||
if (gptr() != eback())
|
||||
{
|
||||
if (c == _Traits::eof())
|
||||
{
|
||||
gbump(-1);
|
||||
return _Traits::not_eof(c);
|
||||
}
|
||||
else if (c == static_cast<int_type>(gptr()[-1]))
|
||||
{ // KLUDGE
|
||||
gbump(-1);
|
||||
return c;
|
||||
}
|
||||
else if (!_M_constant)
|
||||
{
|
||||
gbump(-1);
|
||||
*gptr() = c;
|
||||
return c;
|
||||
}
|
||||
}
|
||||
return _Traits::eof();
|
||||
}
|
||||
|
||||
basic_streambuf<char, char_traits<char> >*
|
||||
strstreambuf::setbuf(char*, streamsize)
|
||||
{
|
||||
return this;
|
||||
}
|
||||
|
||||
strstreambuf::pos_type
|
||||
strstreambuf::seekoff(off_type off,
|
||||
ios_base::seekdir dir, ios_base::openmode mode)
|
||||
{
|
||||
bool do_get = false;
|
||||
bool do_put = false;
|
||||
|
||||
if ((mode & (ios_base::in | ios_base::out)) ==
|
||||
(ios_base::in | ios_base::out) &&
|
||||
(dir == ios_base::beg || dir == ios_base::end))
|
||||
do_get = do_put = true;
|
||||
else if (mode & ios_base::in)
|
||||
do_get = true;
|
||||
else if (mode & ios_base::out)
|
||||
do_put = true;
|
||||
|
||||
// !gptr() is here because, according to D.7.1 paragraph 4, the seekable
|
||||
// area is undefined if there is no get area.
|
||||
if ((!do_get && !do_put) || (do_put && !pptr()) || !gptr())
|
||||
return pos_type(off_type(-1));
|
||||
|
||||
char* seeklow = eback();
|
||||
char* seekhigh = epptr() ? epptr() : egptr();
|
||||
|
||||
off_type newoff;
|
||||
switch(dir) {
|
||||
case ios_base::beg:
|
||||
newoff = 0;
|
||||
break;
|
||||
case ios_base::end:
|
||||
newoff = seekhigh - seeklow;
|
||||
break;
|
||||
case ios_base::cur:
|
||||
newoff = do_put ? pptr() - seeklow : gptr() - seeklow;
|
||||
break;
|
||||
default:
|
||||
return pos_type(off_type(-1));
|
||||
}
|
||||
|
||||
off += newoff;
|
||||
if (off < 0 || off > seekhigh - seeklow)
|
||||
return pos_type(off_type(-1));
|
||||
|
||||
if (do_put) {
|
||||
if (seeklow + off < pbase()) {
|
||||
setp(seeklow, epptr());
|
||||
pbump(off);
|
||||
}
|
||||
else {
|
||||
setp(pbase(), epptr());
|
||||
pbump(off - (pbase() - seeklow));
|
||||
}
|
||||
}
|
||||
if (do_get) {
|
||||
if (off <= egptr() - seeklow)
|
||||
setg(seeklow, seeklow + off, egptr());
|
||||
else if (off <= pptr() - seeklow)
|
||||
setg(seeklow, seeklow + off, pptr());
|
||||
strstreambuf::int_type
|
||||
strstreambuf::underflow()
|
||||
{
|
||||
if (gptr() == egptr() && pptr() && pptr() > egptr())
|
||||
setg(eback(), gptr(), pptr());
|
||||
|
||||
if (gptr() != egptr())
|
||||
return (unsigned char) *gptr();
|
||||
else
|
||||
setg(seeklow, seeklow + off, epptr());
|
||||
return _Traits::eof();
|
||||
}
|
||||
|
||||
return pos_type(newoff);
|
||||
}
|
||||
basic_streambuf<char, char_traits<char> >*
|
||||
strstreambuf::setbuf(char*, streamsize)
|
||||
{ return this; }
|
||||
|
||||
strstreambuf::pos_type
|
||||
strstreambuf::seekpos(pos_type pos, ios_base::openmode mode)
|
||||
{
|
||||
return seekoff(pos - pos_type(off_type(0)), ios_base::beg, mode);
|
||||
}
|
||||
strstreambuf::pos_type
|
||||
strstreambuf::seekoff(off_type off, ios_base::seekdir dir,
|
||||
ios_base::openmode mode)
|
||||
{
|
||||
bool do_get = false;
|
||||
bool do_put = false;
|
||||
|
||||
char* strstreambuf::_M_alloc(size_t n)
|
||||
{
|
||||
if (_M_alloc_fun)
|
||||
return static_cast<char*>(_M_alloc_fun(n));
|
||||
else
|
||||
return new char[n];
|
||||
}
|
||||
if ((mode & (ios_base::in | ios_base::out))
|
||||
== (ios_base::in | ios_base::out) &&
|
||||
(dir == ios_base::beg || dir == ios_base::end))
|
||||
do_get = do_put = true;
|
||||
else if (mode & ios_base::in)
|
||||
do_get = true;
|
||||
else if (mode & ios_base::out)
|
||||
do_put = true;
|
||||
|
||||
void strstreambuf::_M_free(char* p)
|
||||
{
|
||||
if (p)
|
||||
if (_M_free_fun)
|
||||
_M_free_fun(p);
|
||||
// !gptr() is here because, according to D.7.1 paragraph 4, the seekable
|
||||
// area is undefined if there is no get area.
|
||||
if ((!do_get && !do_put) || (do_put && !pptr()) || !gptr())
|
||||
return pos_type(off_type(-1));
|
||||
|
||||
char* seeklow = eback();
|
||||
char* seekhigh = epptr() ? epptr() : egptr();
|
||||
|
||||
off_type newoff;
|
||||
switch (dir)
|
||||
{
|
||||
case ios_base::beg:
|
||||
newoff = 0;
|
||||
break;
|
||||
case ios_base::end:
|
||||
newoff = seekhigh - seeklow;
|
||||
break;
|
||||
case ios_base::cur:
|
||||
newoff = do_put ? pptr() - seeklow : gptr() - seeklow;
|
||||
break;
|
||||
default:
|
||||
return pos_type(off_type(-1));
|
||||
}
|
||||
|
||||
off += newoff;
|
||||
if (off < 0 || off > seekhigh - seeklow)
|
||||
return pos_type(off_type(-1));
|
||||
|
||||
if (do_put)
|
||||
{
|
||||
if (seeklow + off < pbase())
|
||||
{
|
||||
setp(seeklow, epptr());
|
||||
pbump(off);
|
||||
}
|
||||
else
|
||||
{
|
||||
setp(pbase(), epptr());
|
||||
pbump(off - (pbase() - seeklow));
|
||||
}
|
||||
}
|
||||
if (do_get)
|
||||
{
|
||||
if (off <= egptr() - seeklow)
|
||||
setg(seeklow, seeklow + off, egptr());
|
||||
else if (off <= pptr() - seeklow)
|
||||
setg(seeklow, seeklow + off, pptr());
|
||||
else
|
||||
setg(seeklow, seeklow + off, epptr());
|
||||
}
|
||||
return pos_type(newoff);
|
||||
}
|
||||
|
||||
strstreambuf::pos_type
|
||||
strstreambuf::seekpos(pos_type pos, ios_base::openmode mode)
|
||||
{ return seekoff(pos - pos_type(off_type(0)), ios_base::beg, mode); }
|
||||
|
||||
char*
|
||||
strstreambuf::_M_alloc(size_t n)
|
||||
{
|
||||
if (_M_alloc_fun)
|
||||
return static_cast<char*>(_M_alloc_fun(n));
|
||||
else
|
||||
delete[] p;
|
||||
}
|
||||
|
||||
void strstreambuf::_M_setup(char* get, char* put, streamsize n)
|
||||
{
|
||||
if (get) {
|
||||
size_t N = n > 0 ? size_t(n) : n == 0 ? strlen(get) : size_t(INT_MAX);
|
||||
|
||||
if (put) {
|
||||
setg(get, get, put);
|
||||
setp(put, put + N);
|
||||
}
|
||||
else {
|
||||
setg(get, get, get + N);
|
||||
}
|
||||
return new char[n];
|
||||
}
|
||||
}
|
||||
|
||||
//----------------------------------------------------------------------
|
||||
// Class istrstream
|
||||
void
|
||||
strstreambuf::_M_free(char* p)
|
||||
{
|
||||
if (p)
|
||||
if (_M_free_fun)
|
||||
_M_free_fun(p);
|
||||
else
|
||||
delete[] p;
|
||||
}
|
||||
|
||||
istrstream::istrstream(char* s)
|
||||
void
|
||||
strstreambuf::_M_setup(char* get, char* put, streamsize n)
|
||||
{
|
||||
if (get)
|
||||
{
|
||||
size_t N = n > 0 ? size_t(n) : n == 0 ? strlen(get) : size_t(INT_MAX);
|
||||
|
||||
if (put)
|
||||
{
|
||||
setg(get, get, put);
|
||||
setp(put, put + N);
|
||||
}
|
||||
else
|
||||
setg(get, get, get + N);
|
||||
}
|
||||
}
|
||||
|
||||
istrstream::istrstream(char* s)
|
||||
: basic_ios<char>(), basic_istream<char>(0), _M_buf(s, 0)
|
||||
{
|
||||
basic_ios<char>::init(&_M_buf);
|
||||
}
|
||||
{ basic_ios<char>::init(&_M_buf); }
|
||||
|
||||
istrstream::istrstream(const char* s)
|
||||
istrstream::istrstream(const char* s)
|
||||
: basic_ios<char>(), basic_istream<char>(0), _M_buf(s, 0)
|
||||
{
|
||||
basic_ios<char>::init(&_M_buf);
|
||||
}
|
||||
{ basic_ios<char>::init(&_M_buf); }
|
||||
|
||||
istrstream::istrstream(char* s, streamsize n)
|
||||
istrstream::istrstream(char* s, streamsize n)
|
||||
: basic_ios<char>(), basic_istream<char>(0), _M_buf(s, n)
|
||||
{
|
||||
basic_ios<char>::init(&_M_buf);
|
||||
}
|
||||
{ basic_ios<char>::init(&_M_buf); }
|
||||
|
||||
istrstream::istrstream(const char* s, streamsize n)
|
||||
istrstream::istrstream(const char* s, streamsize n)
|
||||
: basic_ios<char>(), basic_istream<char>(0), _M_buf(s, n)
|
||||
{
|
||||
basic_ios<char>::init(&_M_buf);
|
||||
}
|
||||
{ basic_ios<char>::init(&_M_buf); }
|
||||
|
||||
istrstream::~istrstream() {}
|
||||
istrstream::~istrstream() { }
|
||||
|
||||
strstreambuf* istrstream::rdbuf() const {
|
||||
return const_cast<strstreambuf*>(&_M_buf);
|
||||
}
|
||||
strstreambuf*
|
||||
istrstream::rdbuf() const
|
||||
{ return const_cast<strstreambuf*>(&_M_buf); }
|
||||
|
||||
char* istrstream::str() { return _M_buf.str(); }
|
||||
char*
|
||||
istrstream::str()
|
||||
{ return _M_buf.str(); }
|
||||
|
||||
//----------------------------------------------------------------------
|
||||
// Class ostrstream
|
||||
|
||||
ostrstream::ostrstream()
|
||||
ostrstream::ostrstream()
|
||||
: basic_ios<char>(), basic_ostream<char>(0), _M_buf()
|
||||
{
|
||||
basic_ios<char>::init(&_M_buf);
|
||||
}
|
||||
{ basic_ios<char>::init(&_M_buf); }
|
||||
|
||||
ostrstream::ostrstream(char* s, int n, ios_base::openmode mode)
|
||||
: basic_ios<char>(), basic_ostream<char>(0),
|
||||
ostrstream::ostrstream(char* s, int n, ios_base::openmode mode)
|
||||
: basic_ios<char>(), basic_ostream<char>(0),
|
||||
_M_buf(s, n, mode & ios_base::app ? s + strlen(s) : s)
|
||||
{
|
||||
basic_ios<char>::init(&_M_buf);
|
||||
}
|
||||
{ basic_ios<char>::init(&_M_buf); }
|
||||
|
||||
ostrstream::~ostrstream() {}
|
||||
ostrstream::~ostrstream() {}
|
||||
|
||||
strstreambuf* ostrstream::rdbuf() const
|
||||
{
|
||||
return const_cast<strstreambuf*>(&_M_buf);
|
||||
}
|
||||
strstreambuf*
|
||||
ostrstream::rdbuf() const
|
||||
{ return const_cast<strstreambuf*>(&_M_buf); }
|
||||
|
||||
void ostrstream::freeze(bool freezeflag)
|
||||
{
|
||||
_M_buf.freeze(freezeflag);
|
||||
}
|
||||
void
|
||||
ostrstream::freeze(bool freezeflag)
|
||||
{ _M_buf.freeze(freezeflag); }
|
||||
|
||||
char* ostrstream::str()
|
||||
{
|
||||
return _M_buf.str();
|
||||
}
|
||||
char*
|
||||
ostrstream::str()
|
||||
{ return _M_buf.str(); }
|
||||
|
||||
int ostrstream::pcount() const
|
||||
{
|
||||
return _M_buf.pcount();
|
||||
}
|
||||
int
|
||||
ostrstream::pcount() const
|
||||
{ return _M_buf.pcount(); }
|
||||
|
||||
//----------------------------------------------------------------------
|
||||
// Class strstream
|
||||
|
||||
strstream::strstream()
|
||||
strstream::strstream()
|
||||
: basic_ios<char>(), basic_iostream<char>(0), _M_buf()
|
||||
{
|
||||
basic_ios<char>::init(&_M_buf);
|
||||
}
|
||||
{ basic_ios<char>::init(&_M_buf); }
|
||||
|
||||
strstream::strstream(char* s, int n, ios_base::openmode mode)
|
||||
: basic_ios<char>(), basic_iostream<char>(0),
|
||||
strstream::strstream(char* s, int n, ios_base::openmode mode)
|
||||
: basic_ios<char>(), basic_iostream<char>(0),
|
||||
_M_buf(s, n, mode & ios_base::app ? s + strlen(s) : s)
|
||||
{
|
||||
basic_ios<char>::init(&_M_buf);
|
||||
}
|
||||
{ basic_ios<char>::init(&_M_buf); }
|
||||
|
||||
strstream::~strstream() {}
|
||||
strstream::~strstream() { }
|
||||
|
||||
strstreambuf* strstream::rdbuf() const
|
||||
{
|
||||
return const_cast<strstreambuf*>(&_M_buf);
|
||||
}
|
||||
strstreambuf*
|
||||
strstream::rdbuf() const
|
||||
{ return const_cast<strstreambuf*>(&_M_buf); }
|
||||
|
||||
void strstream::freeze(bool freezeflag)
|
||||
{
|
||||
_M_buf.freeze(freezeflag);
|
||||
}
|
||||
void
|
||||
strstream::freeze(bool freezeflag)
|
||||
{ _M_buf.freeze(freezeflag); }
|
||||
|
||||
int strstream::pcount() const
|
||||
{
|
||||
return _M_buf.pcount();
|
||||
}
|
||||
|
||||
char* strstream::str()
|
||||
{
|
||||
return _M_buf.str();
|
||||
}
|
||||
int
|
||||
strstream::pcount() const
|
||||
{ return _M_buf.pcount(); }
|
||||
|
||||
char*
|
||||
strstream::str()
|
||||
{ return _M_buf.str(); }
|
||||
} // namespace std
|
||||
|
||||
// Local Variables:
|
||||
// mode:C++
|
||||
// End:
|
||||
|
|
|
|||
|
|
@ -0,0 +1,40 @@
|
|||
// Copyright (C) 2002 Free Software Foundation, Inc.
|
||||
//
|
||||
// This file is part of the GNU ISO C++ Library. This library is free
|
||||
// software; you can redistribute it and/or modify it under the
|
||||
// terms of the GNU General Public License as published by the
|
||||
// Free Software Foundation; either version 2, or (at your option)
|
||||
// any later version.
|
||||
|
||||
// This library is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
|
||||
// You should have received a copy of the GNU General Public License along
|
||||
// with this library; see the file COPYING. If not, write to the Free
|
||||
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
||||
// USA.
|
||||
|
||||
// backward strstream members
|
||||
|
||||
#include <strstream.h>
|
||||
#include <testsuite_hooks.h>
|
||||
|
||||
// { dg-options "-Wno-deprecated" }
|
||||
|
||||
int test01()
|
||||
{
|
||||
strstream s;
|
||||
for (unsigned i=0 ; i!= 1000 ; ++i)
|
||||
s << i << std::endl;
|
||||
s << std::ends;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int main()
|
||||
{
|
||||
test01();
|
||||
return 0;
|
||||
}
|
||||
Loading…
Reference in New Issue