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Annotation of GNUtools/libg++/libio/isgetsb.cc, revision 1.1

1.1     ! root        1: /* This is part of libio/iostream, providing -*- C++ -*- input/output.
        !             2: Copyright (C) 1993 Free Software Foundation
        !             3: 
        !             4: This file is part of the GNU IO Library.  This library is free
        !             5: software; you can redistribute it and/or modify it under the
        !             6: terms of the GNU General Public License as published by the
        !             7: Free Software Foundation; either version 2, or (at your option)
        !             8: any later version.
        !             9: 
        !            10: This library is distributed in the hope that it will be useful,
        !            11: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            12: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            13: GNU General Public License for more details.
        !            14: 
        !            15: You should have received a copy of the GNU General Public License
        !            16: along with GNU CC; see the file COPYING.  If not, write to
        !            17: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
        !            18: 
        !            19: As a special exception, if you link this library with files
        !            20: compiled with a GNU compiler to produce an executable, this does not cause
        !            21: the resulting executable to be covered by the GNU General Public License.
        !            22: This exception does not however invalidate any other reasons why
        !            23: the executable file might be covered by the GNU General Public License. */
        !            24: 
        !            25: #include "libioP.h"
        !            26: #include "iostream.h"
        !            27: #include <string.h>
        !            28: 
        !            29: istream& istream::get(streambuf& sb, char delim /* = '\n' */)
        !            30: {
        !            31:   _gcount = 0;
        !            32:   if (ipfx1())
        !            33:     {
        !            34:       register streambuf* isb = rdbuf();
        !            35:       for (;;)
        !            36:        {
        !            37:          streamsize len = isb->_IO_read_end - isb->_IO_read_ptr;
        !            38:          if (len <= 0)
        !            39:            if (__underflow(isb) == EOF)
        !            40:              break;
        !            41:            else
        !            42:              len = isb->_IO_read_end - isb->_IO_read_ptr;
        !            43:          char *delimp = (char*)memchr((void*)isb->_IO_read_ptr, delim, len);
        !            44:          if (delimp != NULL)
        !            45:            len = delimp - isb->_IO_read_ptr;
        !            46:          int written = sb.sputn(isb->_IO_read_ptr, len);
        !            47:          isb->_IO_read_ptr += written;
        !            48:          _gcount += written;
        !            49:          if (written != len)
        !            50:            {
        !            51:              set(ios::failbit);
        !            52:              break;
        !            53:            }
        !            54:          if (delimp != NULL)
        !            55:            break;
        !            56:        }
        !            57:     }
        !            58:   return *this;
        !            59: }

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