contrib/cvs-1.12/lib/getnline.h

   1 /* getnline - Read a line from a stream, with bounded memory allocation.
   2
   3    Copyright (C) 2003, 2004 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 2, or (at your option)
   8    any later version.
   9
  10    This program 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 this program; if not, write to the Free Software Foundation,
  17    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  18
  19 #ifndef GETNLINE_H
  20 #define GETNLINE_H 1
  21
  22 #include <stdio.h>
  23 #include <sys/types.h>
  24
  25 #define GETNLINE_NO_LIMIT ((size_t) -1)
  26
  27 /* Read a line, up to the next newline, from STREAM, and store it in *LINEPTR.
  28    *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
  29    bytes of space.  It is realloc'd as necessary.  Reallocation is limited to
  30    NMAX bytes; if the line is longer than that, the extra bytes are read but
  31    thrown away.
  32    Return the number of bytes read and stored at *LINEPTR (not including the
  33    NUL terminator), or -1 on error or EOF.  */
  34 extern ssize_t getnline (char **lineptr, size_t *linesize, size_t nmax,
  35                          FILE *stream);
  36
  37 /* Read a line, up to the next occurrence of DELIMITER, from STREAM, and store
  38    it in *LINEPTR.
  39    *LINEPTR is a pointer returned from malloc (or NULL), pointing to *LINESIZE
  40    bytes of space.  It is realloc'd as necessary.  Reallocation is limited to
  41    NMAX bytes; if the line is longer than that, the extra bytes are read but
  42    thrown away.
  43    Return the number of bytes read and stored at *LINEPTR (not including the
  44    NUL terminator), or -1 on error or EOF.  */
  45 extern ssize_t getndelim (char **lineptr, size_t *linesize, size_t nmax,
  46                           int delimiter, FILE *stream);
  47
  48 #endif /* GETNLINE_H */