-/* getline.c -- Replacement for GNU C library function getline
+/* getline.c --- Implementation of replacement getline function.
+ Copyright (C) 2005-2007, 2009-2013 Free Software Foundation, Inc.
-Copyright (C) 1993 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 2, or (at
+ your option) any later version.
-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 2 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.
-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 <http://www.gnu.org/licenses/>. */
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+/* Written by Simon Josefsson. */
-/* Written by Jan Brittenson, bson@gnu.ai.mit.edu. */
-
-#ifdef HAVE_CONFIG_H
#include <config.h>
-#endif
-#include <sys/types.h>
#include <stdio.h>
-#define NDEBUG
-#include <assert.h>
-
-#if STDC_HEADERS
-#include <stdlib.h>
-#else
-char *malloc (), *realloc ();
-#endif
-
-/* Always add at least this many bytes when extending the buffer. */
-#define MIN_CHUNK 64
-
-/* Read up to (and including) a TERMINATOR from STREAM into *LINEPTR
- + OFFSET (and null-terminate it). *LINEPTR is a pointer returned from
- malloc (or NULL), pointing to *N characters of space. It is realloc'd
- as necessary. Return the number of characters read (not including the
- null terminator), or -1 on error or EOF. */
-
-int
-getstr (lineptr, n, stream, terminator, offset)
- char **lineptr;
- size_t *n;
- FILE *stream;
- char terminator;
- int offset;
-{
- int nchars_avail; /* Allocated but unused chars in *LINEPTR. */
- char *read_pos; /* Where we're reading into *LINEPTR. */
- int ret;
-
- if (!lineptr || !n || !stream)
- return -1;
-
- if (!*lineptr)
- {
- *n = MIN_CHUNK;
- *lineptr = malloc (*n);
- if (!*lineptr)
- return -1;
- }
-
- nchars_avail = *n - offset;
- read_pos = *lineptr + offset;
-
- for (;;)
- {
- register int c = getc (stream);
-
- /* We always want at least one char left in the buffer, since we
- always (unless we get an error while reading the first char)
- NUL-terminate the line buffer. */
-
- assert(*n - nchars_avail == read_pos - *lineptr);
- if (nchars_avail < 2)
- {
- if (*n > MIN_CHUNK)
- *n *= 2;
- else
- *n += MIN_CHUNK;
-
- nchars_avail = *n + *lineptr - read_pos;
- *lineptr = realloc (*lineptr, *n);
- if (!*lineptr)
- return -1;
- read_pos = *n - nchars_avail + *lineptr;
- assert(*n - nchars_avail == read_pos - *lineptr);
- }
-
- if (c == EOF || ferror (stream))
- {
- /* Return partial line, if any. */
- if (read_pos == *lineptr)
- return -1;
- else
- break;
- }
-
- *read_pos++ = c;
- nchars_avail--;
-
- if (c == terminator)
- /* Return the line. */
- break;
- }
-
- /* Done - NUL terminate and return the number of chars read. */
- *read_pos = '\0';
-
- ret = read_pos - (*lineptr + offset);
- return ret;
-}
-int
-getline (lineptr, n, stream)
- char **lineptr;
- size_t *n;
- FILE *stream;
+ssize_t
+getline (char **lineptr, size_t *n, FILE *stream)
{
- return getstr (lineptr, n, stream, '\n', 0);
+ return getdelim (lineptr, n, '\n', stream);
}