str.cc

早期freebsd实现

/* 
Copyright (C) 1990 Free Software Foundation
    written by Doug Lea ([e-mail])

This file is part of the GNU C++ Library.  This library is free
software; you can redistribute it and/or modify it under the terms of
the GNU Library General Public License as published by the Free
Software Foundation; either version 2 of the License, 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 Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#ifdef __GNUG__
#pragma implementation
#endif
#include <builtin.h>
#include <AllocRing.h>

extern AllocRing _libgxx_fmtq;

char* str(const char* s, int width)
{
  int len = strlen(s);
  int wrksiz = len + width + 1;
  char* fmtbase = (char *) _libgxx_fmtq.alloc(wrksiz);
  char* fmt = fmtbase;
  for (int blanks = width - len; blanks > 0; --blanks)
   *fmt++ = ' ';
  while (*s != 0) 
    *fmt++ = *s++;
  *fmt = 0;
  return fmtbase;
}