+// strstream definitions -*- C++ -*-
+
+// Copyright (C) 2001, 2002, 2003 Free Software Foundation
+//
+// 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.
+
+// As a special exception, you may use this file as part of a free software
+// library without restriction. Specifically, if other files instantiate
+// templates or use macros or inline functions from this file, or you compile
+// this file and link it with other files to produce an executable, this
+// file does not by itself cause the resulting executable to be covered by
+// the GNU General Public License. This exception does not however
+// invalidate any other reasons why the executable file might be covered by
+// the GNU General Public License.
+
/*
* Copyright (c) 1998
* Silicon Graphics Computer Systems, Inc.
// MAY BE REMOVED in a future standard revision. You should use the
// header <sstream> instead.
-#include <strstream.h>
+#include <strstream>
#include <algorithm>
#include <new>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
-__STL_BEGIN_NAMESPACE
-
-// strstreambuf constructor, destructor.
-
-strstreambuf::strstreambuf(streamsize initial_capacity)
- : _Base(),
- _M_alloc_fun(0), _M_free_fun(0),
- _M_dynamic(true), _M_frozen(false), _M_constant(false)
-{
- streamsize n = max(initial_capacity, streamsize(16));
-
- char* buf = _M_alloc(n);
- if (buf) {
- setp(buf, buf + n);
- setg(buf, buf, buf);
- }
-}
-
-strstreambuf::strstreambuf(void* (*alloc_f)(size_t), void (*free_f)(void*))
- : _Base(),
- _M_alloc_fun(alloc_f), _M_free_fun(free_f),
- _M_dynamic(true), _M_frozen(false), _M_constant(false)
-{
- streamsize n = 16;
-
- char* buf = _M_alloc(n);
- if (buf) {
- setp(buf, buf + n);
- setg(buf, buf, buf);
+namespace std
+{
+ strstreambuf::strstreambuf(streamsize initial_capacity)
+ : _Base(), _M_alloc_fun(0), _M_free_fun(0), _M_dynamic(true),
+ _M_frozen(false), _M_constant(false)
+ {
+ streamsize n = std::max(initial_capacity, streamsize(16));
+
+ char* buf = _M_alloc(n);
+ if (buf)
+ {
+ setp(buf, buf + n);
+ setg(buf, buf, buf);
+ }
}
-}
-
-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::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);
-}
-
-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)
- _M_free(eback());
-}
-
-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();
+ strstreambuf::strstreambuf(void* (*alloc_f)(size_t), void (*free_f)(void*))
+ : _Base(), _M_alloc_fun(alloc_f), _M_free_fun(free_f), _M_dynamic(true),
+ _M_frozen(false), _M_constant(false)
+ {
+ streamsize n = 16;
+
+ char* buf = _M_alloc(n);
+ if (buf)
+ {
+ setp(buf, buf + n);
+ setg(buf, buf, buf);
}
-
- 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;
+ 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::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); }
+
+ 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)
+ _M_free(eback());
}
- 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 == (unsigned int)(gptr()[-1])) { // (u int) added KLUDGE
- gbump(-1);
- return c;
- }
- else if (!_M_constant) {
- gbump(-1);
- *gptr() = c;
- return c;
- }
+ void
+ strstreambuf::freeze(bool frozenflag)
+ {
+ if (_M_dynamic)
+ _M_frozen = frozenflag;
}
- return _Traits::eof();
-}
-
-strstreambuf::int_type strstreambuf::underflow()
-{
- if (gptr() == egptr() && pptr() && pptr() > egptr())
- setg(eback(), gptr(), pptr());
-
- if (gptr() != egptr())
- return (unsigned char) *gptr();
- else
- 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));
+ char*
+ strstreambuf::str()
+ {
+ freeze(true);
+ return eback();
}
- off += newoff;
- if (off < 0 || off > seekhigh - seeklow)
- return pos_type(off_type(-1));
+ 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 = std::max(ptrdiff_t(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();
+ }
+
+ setp(buf, buf + new_size);
+ pbump(old_size);
+
+ if (reposition_get)
+ setg(buf, buf + old_get_offset, buf +
+ std::max(old_get_offset, old_size));
+
+ _M_free(old_buffer);
+ }
+ }
+
+ if (pptr() != epptr())
+ {
+ *pptr() = c;
+ pbump(1);
+ return c;
+ }
+ else
+ return traits_type::eof();
+ }
- if (do_put) {
- if (seeklow + off < pbase()) {
- setp(seeklow, epptr());
- pbump(off);
- }
- else {
- setp(pbase(), epptr());
- pbump(off - (pbase() - seeklow));
+ 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 == _Traits::to_int_type(gptr()[-1]))
+ { // KLUDGE
+ gbump(-1);
+ return c;
+ }
+ else if (!_M_constant)
+ {
+ gbump(-1);
+ *gptr() = c;
+ return c;
+ }
}
+ return _Traits::eof();
}
- 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);
-}
-
-strstreambuf::pos_type
-strstreambuf::seekpos(pos_type pos, ios_base::openmode mode)
-{
- return seekoff(pos - pos_type(off_type(0)), ios_base::beg, mode);
-}
+ 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());
+ else
+ setg(seeklow, seeklow + off, epptr());
+ }
+ return pos_type(newoff);
+ }
-char* strstreambuf::_M_alloc(size_t n)
-{
- if (_M_alloc_fun)
- return static_cast<char*>(_M_alloc_fun(n));
- else
- return new char[n];
-}
+ strstreambuf::pos_type
+ strstreambuf::seekpos(pos_type pos, ios_base::openmode mode)
+ { return seekoff(pos - pos_type(off_type(0)), ios_base::beg, mode); }
-void strstreambuf::_M_free(char* p)
-{
- if (p)
- if (_M_free_fun)
- _M_free_fun(p);
+ 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);
+ return new char[n];
+ }
- if (put) {
- setg(get, get, put);
- setp(put, put + N);
- }
- else {
- setg(get, get, get + N);
- }
+ void
+ strstreambuf::_M_free(char* p)
+ {
+ if (p)
+ if (_M_free_fun)
+ _M_free_fun(p);
+ else
+ delete[] p;
}
-}
-//----------------------------------------------------------------------
-// Class istrstream
+ 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)
+ 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);
-}
-
-istrstream::~istrstream() {}
+ { basic_ios<char>::init(&_M_buf); }
-strstreambuf* istrstream::rdbuf() const {
- return const_cast<strstreambuf*>(&_M_buf);
-}
+ istrstream::~istrstream() { }
-char* istrstream::str() { return _M_buf.str(); }
+ strstreambuf*
+ istrstream::rdbuf() const
+ { return const_cast<strstreambuf*>(&_M_buf); }
-//----------------------------------------------------------------------
-// Class ostrstream
+ char*
+ istrstream::str()
+ { return _M_buf.str(); }
-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();
-}
-
-//----------------------------------------------------------------------
-// Class strstream
+ int
+ ostrstream::pcount() const
+ { return _M_buf.pcount(); }
-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);
-}
-
-strstream::~strstream() {}
+ { basic_ios<char>::init(&_M_buf); }
-strstreambuf* strstream::rdbuf() const
-{
- return const_cast<strstreambuf*>(&_M_buf);
-}
+ strstream::~strstream() { }
-void strstream::freeze(bool freezeflag)
-{
- _M_buf.freeze(freezeflag);
-}
+ strstreambuf*
+ strstream::rdbuf() const
+ { return const_cast<strstreambuf*>(&_M_buf); }
-int strstream::pcount() const
-{
- return _M_buf.pcount();
-}
-
-char* strstream::str()
-{
- return _M_buf.str();
-}
+ void
+ strstream::freeze(bool freezeflag)
+ { _M_buf.freeze(freezeflag); }
-__STL_END_NAMESPACE
+ int
+ strstream::pcount() const
+ { return _M_buf.pcount(); }
-// Local Variables:
-// mode:C++
-// End:
+ char*
+ strstream::str()
+ { return _M_buf.str(); }
+} // namespace std
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