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- // Member templates for the -*- C++ -*- string classes.
- // Copyright (C) 1994 Free Software Foundation
-
- // This file is part of the GNU ANSI 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, if you link this library with files
- // compiled with a GNU compiler to produce an executable, this does not 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.
-
- // Written by Jason Merrill based upon the specification by Takanori Adachi
- // in ANSI X3J16/94-0013R2.
-
- #include <std/stddef.h>
- #include <std/bastring.h>
-
- extern "C++" {
- template <class charT, class traits>
- inline void * __bsrep <charT, traits>::
- operator new (size_t s, size_t extra)
- {
- return ::operator new (s + extra * sizeof (charT));
- }
-
- template <class charT, class traits>
- inline size_t __bsrep <charT, traits>::
- #if _G_ALLOC_CONTROL
- default_frob (size_t s)
- #else
- frob_size (size_t s)
- #endif
- {
- size_t i = 16;
- while (i < s) i *= 2;
- return i;
- }
-
- template <class charT, class traits>
- inline __bsrep <charT, traits> * __bsrep <charT, traits>::
- create (size_t extra)
- {
- extra = frob_size (extra + 1);
- Rep *p = new (extra) Rep;
- p->res = extra;
- p->ref = 1;
- p->selfish = false;
- return p;
- }
-
- template <class charT, class traits>
- charT * __bsrep <charT, traits>::
- clone ()
- {
- Rep *p = Rep::create (len);
- p->copy (0, data (), len);
- p->len = len;
- return p->data ();
- }
-
- template <class charT, class traits>
- inline bool __bsrep <charT, traits>::
- #ifdef _G_ALLOC_CONTROL
- default_excess (size_t s, size_t r)
- #else
- excess_slop (size_t s, size_t r)
- #endif
- {
- return 2 * (s <= 16 ? 16 : s) < r;
- }
-
- template <class charT, class traits>
- inline bool basic_string <charT, traits>::
- check_realloc (size_t s) const
- {
- ++s;
- return (rep ()->ref > 1
- || s > capacity ()
- || Rep::excess_slop (s, capacity ()));
- }
-
- template <class charT, class traits>
- void basic_string <charT, traits>::
- alloc (size_t size, bool save)
- {
- if (! check_realloc (size))
- return;
-
- Rep *p = Rep::create (size);
-
- if (save)
- {
- p->copy (0, data (), length ());
- p->len = length ();
- }
- else
- p->len = 0;
-
- repup (p);
- }
-
- template <class charT, class traits>
- basic_string <charT, traits>& basic_string <charT, traits>::
- replace (size_t pos1, size_t n1,
- const basic_string& str, size_t pos2, size_t n2)
- {
- const size_t len2 = str.length ();
-
- if (pos1 == 0 && n1 >= length () && pos2 == 0 && n2 >= len2)
- return operator= (str);
-
- OUTOFRANGE (pos2 > len2);
-
- if (n2 > len2 - pos2)
- n2 = len2 - pos2;
-
- return replace (pos1, n1, str.data () + pos2, n2);
- }
-
- template <class charT, class traits>
- inline void __bsrep <charT, traits>::
- copy (size_t pos, const charT *s, size_t n)
- {
- if (n)
- traits::copy (data () + pos, s, n);
- }
-
- template <class charT, class traits>
- inline void __bsrep <charT, traits>::
- move (size_t pos, const charT *s, size_t n)
- {
- if (n)
- traits::move (data () + pos, s, n);
- }
-
- template <class charT, class traits>
- basic_string <charT, traits>& basic_string <charT, traits>::
- replace (size_t pos, size_t n1, const charT* s, size_t n2)
- {
- const size_t len = length ();
- OUTOFRANGE (pos > len);
- if (n1 > len - pos)
- n1 = len - pos;
- LENGTHERROR (len - n1 >= npos - n2);
- size_t newlen = len - n1 + n2;
-
- if (check_realloc (newlen))
- {
- Rep *p = Rep::create (newlen);
- p->copy (0, data (), pos);
- p->copy (pos + n2, data () + pos + n1, len - (pos + n1));
- p->copy (pos, s, n2);
- repup (p);
- }
- else
- {
- rep ()->move (pos + n2, data () + pos + n1, len - (pos + n1));
- rep ()->copy (pos, s, n2);
- }
- rep ()->len = newlen;
-
- return *this;
- }
-
- template <class charT, class traits>
- inline void __bsrep <charT, traits>::
- set (size_t pos, const charT c, size_t n)
- {
- traits::set (data () + pos, c, n);
- }
-
- template <class charT, class traits>
- basic_string <charT, traits>& basic_string <charT, traits>::
- replace (size_t pos, size_t n1, size_t n2, charT c)
- {
- const size_t len = length ();
- OUTOFRANGE (pos > len);
- if (n1 > len - pos)
- n1 = len - pos;
- LENGTHERROR (len - n1 >= npos - n2);
- size_t newlen = len - n1 + n2;
-
- if (check_realloc (newlen))
- {
- Rep *p = Rep::create (newlen);
- p->copy (0, data (), pos);
- p->copy (pos + n2, data () + pos + n1, len - (pos + n1));
- p->set (pos, c, n2);
- repup (p);
- }
- else
- {
- rep ()->move (pos + n2, data () + pos + n1, len - (pos + n1));
- rep ()->set (pos, c, n2);
- }
- rep ()->len = newlen;
-
- return *this;
- }
-
- template <class charT, class traits>
- void basic_string <charT, traits>::
- resize (size_t n, charT c)
- {
- LENGTHERROR (n == npos);
-
- if (n > length ())
- append (n - length (), c);
- else
- remove (n);
- }
-
- template <class charT, class traits>
- size_t basic_string <charT, traits>::
- copy (charT* s, size_t n, size_t pos)
- {
- OUTOFRANGE (pos > length ());
-
- if (n > length () - pos)
- n = length () - pos;
-
- traits::copy (s, data () + pos, n);
- return n;
- }
-
- template <class charT, class traits>
- size_t basic_string <charT, traits>::
- find (const charT* s, size_t pos, size_t n) const
- {
- size_t xpos = pos;
- for (; xpos + n <= length (); ++xpos)
- if (traits::eq (data () [xpos], *s)
- && traits::compare (data () + xpos, s, n) == 0)
- return xpos;
- return npos;
- }
-
- template <class charT, class traits>
- inline size_t basic_string <charT, traits>::
- _find (const charT* ptr, charT c, size_t xpos, size_t len)
- {
- for (; xpos < len; ++xpos)
- if (traits::eq (ptr [xpos], c))
- return xpos;
- return npos;
- }
-
- template <class charT, class traits>
- size_t basic_string <charT, traits>::
- find (charT c, size_t pos) const
- {
- return _find (data (), c, pos, length ());
- }
-
- template <class charT, class traits>
- size_t basic_string <charT, traits>::
- rfind (const charT* s, size_t pos, size_t n) const
- {
- size_t xpos = length () - n;
- if (xpos > pos)
- xpos = pos;
-
- for (++xpos; xpos-- > 0; )
- if (traits::eq (data () [xpos], *s)
- && traits::compare (data () + xpos, s, n) == 0)
- return xpos;
- return npos;
- }
-
- template <class charT, class traits>
- size_t basic_string <charT, traits>::
- rfind (charT c, size_t pos) const
- {
- size_t xpos = length () - 1;
- if (xpos > pos)
- xpos = pos;
-
- for (++xpos; xpos-- > 0; )
- if (traits::eq (data () [xpos], c))
- return xpos;
- return npos;
- }
-
- template <class charT, class traits>
- size_t basic_string <charT, traits>::
- find_first_of (const charT* s, size_t pos, size_t n) const
- {
- size_t xpos = pos;
- for (; xpos < length (); ++xpos)
- if (_find (s, data () [xpos], 0, n) != npos)
- return xpos;
- return npos;
- }
-
- template <class charT, class traits>
- size_t basic_string <charT, traits>::
- find_last_of (const charT* s, size_t pos, size_t n) const
- {
- size_t xpos = length ();
- for (; xpos-- > pos; )
- if (_find (s, data () [xpos], 0, n) != npos)
- return xpos;
- return npos;
- }
-
- template <class charT, class traits>
- size_t basic_string <charT, traits>::
- find_first_not_of (const charT* s, size_t pos, size_t n) const
- {
- size_t xpos = pos;
- for (; xpos < length (); ++xpos)
- if (_find (s, data () [xpos], 0, n) == npos)
- return xpos;
- return npos;
- }
-
- template <class charT, class traits>
- size_t basic_string <charT, traits>::
- find_first_not_of (charT c, size_t pos) const
- {
- size_t xpos = pos;
- for (; xpos < length (); ++xpos)
- if (traits::ne (data () [xpos], c))
- return xpos;
- return npos;
- }
-
- template <class charT, class traits>
- size_t basic_string <charT, traits>::
- find_last_not_of (const charT* s, size_t pos, size_t n) const
- {
- size_t xpos = length ();
- for (; xpos-- > pos; )
- if (_find (s, data () [xpos], 0, n) == npos)
- return xpos;
- return npos;
- }
-
- template <class charT, class traits>
- size_t basic_string <charT, traits>::
- find_last_not_of (charT c, size_t pos) const
- {
- size_t xpos = length ();
- for (; xpos-- > pos; )
- if (traits::ne (data () [xpos], c))
- return xpos;
- return npos;
- }
-
- template <class charT, class traits>
- int basic_string <charT, traits>::
- compare (const basic_string& str, size_t pos, size_t n) const
- {
- OUTOFRANGE (pos > length ());
-
- size_t rlen = length () - pos;
- if (rlen > n)
- rlen = n;
- if (rlen > str.length ())
- rlen = str.length ();
- int r = traits::compare (data () + pos, str.data (), rlen);
- if (r != 0)
- return r;
- if (rlen == n)
- return 0;
- return (length () - pos) - str.length ();
- }
-
- template <class charT, class traits>
- int basic_string <charT, traits>::
- compare (const charT* s, size_t pos, size_t n) const
- {
- OUTOFRANGE (pos > length ());
-
- size_t rlen = length () - pos;
- if (rlen > n)
- rlen = n;
- int r = traits::compare (data () + pos, s, rlen);
- if (r != 0)
- return r;
- return (length () - pos) - n;
- }
-
- #include <iostream.h>
-
- template <class charT, class traits>
- istream &
- operator>> (istream &is, basic_string <charT, traits> &s)
- {
- int w = is.width (0);
- if (is.ipfx0 ())
- {
- register streambuf *sb = is.rdbuf ();
- s.resize (0);
- while (1)
- {
- int ch = sb->sbumpc ();
- if (ch == EOF)
- {
- is.setstate (ios::eofbit);
- break;
- }
- else if (traits::is_del (ch))
- {
- sb->sungetc ();
- break;
- }
- s += ch;
- if (--w == 1)
- break;
- }
- }
-
- is.isfx ();
- if (s.length () == 0)
- is.setstate (ios::failbit);
-
- return is;
- }
-
- template <class charT, class traits>
- ostream &
- operator<< (ostream &o, const basic_string <charT, traits>& s)
- {
- return o.write (s.data (), s.length ());
- }
-
- template <class charT, class traits>
- istream&
- getline (istream &is, basic_string <charT, traits>& s, charT delim)
- {
- if (is.ipfx1 ())
- {
- _IO_size_t count = 0;
- streambuf *sb = is.rdbuf ();
- s.resize (0);
-
- while (1)
- {
- int ch = sb->sbumpc ();
- if (ch == EOF)
- {
- is.setstate (count == 0
- ? (ios::failbit|ios::eofbit)
- : ios::eofbit);
- break;
- }
-
- ++count;
-
- if (ch == delim)
- break;
-
- s += ch;
-
- if (s.length () == s.npos - 1)
- {
- is.setstate (ios::failbit);
- break;
- }
- }
- }
-
- // We need to be friends with istream to do this.
- // is._gcount = count;
- is.isfx ();
-
- return is;
- }
- } // extern "C++"
-