contrib/cvs-1.12/lib/getndelim2.h

   1 /* getndelim2 - Read a line from a stream, stopping at one of 2 delimiters,
   2    with bounded memory allocation.
   3
   4    Copyright (C) 2003, 2004 Free Software Foundation, Inc.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2, or (at your option)
   9    any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software Foundation,
  18    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  19
  20 #ifndef GETNDELIM2_H
  21 #define GETNDELIM2_H 1
  22
  23 #include <stdio.h>
  24 #include <sys/types.h>
  25
  26 #define GETNLINE_NO_LIMIT ((size_t) -1)
  27
  28 /* Read into a buffer *LINEPTR returned from malloc (or NULL),
  29    pointing to *LINESIZE bytes of space.  Store the input bytes
  30    starting at *LINEPTR + OFFSET, and null-terminate them.  Reallocate
  31    the buffer as necessary, but if NMAX is not GETNLINE_NO_LIMIT
  32    then do not allocate more than NMAX bytes; if the line is longer
  33    than that, read and discard the extra bytes.  Stop reading after
  34    after the first occurrence of DELIM1 or DELIM2, whichever comes
  35    first; a delimiter equal to EOF stands for no delimiter.  Read the
  36    input bytes from STREAM.
  37    Return the number of bytes read and stored at *LINEPTR + OFFSET (not
  38    including the NUL terminator), or -1 on error or EOF.  */
  39 extern ssize_t getndelim2 (char **lineptr, size_t *linesize, size_t offset,
  40                            size_t nmax, int delim1, int delim2,
  41                            FILE *stream);
  42
  43 #endif /* GETNDELIM2_H */