rm_/lib/getndelim2.h

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2020-09-02 16:47:03 +08:00
/* getndelim2 - Read a line from a stream, stopping at one of 2 delimiters,
with bounded memory allocation.
Copyright (C) 2003-2004, 2006, 2009-2020 Free Software Foundation, Inc.
This program 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 3 of the License, or
(at your option) any later version.
This program 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 program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef GETNDELIM2_H
#define GETNDELIM2_H 1
#include <stdio.h>
#include <sys/types.h>
#define GETNLINE_NO_LIMIT ((size_t) -1)
/* Read into a buffer *LINEPTR returned from malloc (or NULL),
pointing to *LINESIZE bytes of space. Store the input bytes
starting at *LINEPTR + OFFSET, and null-terminate them. Reallocate
the buffer as necessary, but if NMAX is not GETNLINE_NO_LIMIT
then do not allocate more than NMAX bytes; if the line is longer
than that, read and discard the extra bytes. Stop reading after
the first occurrence of DELIM1 or DELIM2, whichever comes first;
a delimiter equal to EOF stands for no delimiter. Read the
input bytes from STREAM.
Return the number of bytes read and stored at *LINEPTR + OFFSET (not
including the NUL terminator), or -1 on error or EOF. */
extern ssize_t getndelim2 (char **lineptr, size_t *linesize, size_t offset,
size_t nmax, int delim1, int delim2,
FILE *stream);
#endif /* GETNDELIM2_H */