maint: update copyright

[gnulib.git] / lib / getline.c

diff --git a/lib/getline.c b/lib/getline.c
index 3a13665..5002a2e 100644 (file)
--- a/lib/getline.c
+++ b/lib/getline.c
@@ -1,155 +1,27 @@
-/* getline.c -- Replacement for GNU C library function getline
+/* getline.c --- Implementation of replacement getline function.
+   Copyright (C) 2005-2007, 2009-2014 Free Software Foundation, Inc.
 
-Copyright (C) 1993, 1996 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+/* Written by Simon Josefsson. */
 
-/* Written by Jan Brittenson, bson@gnu.ai.mit.edu.  */
+#include <config.h>
 
-#if HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-/* The `getdelim' function is only declared if the following symbol
-   is defined.  */
-#define _GNU_SOURCE    1
 #include <stdio.h>
-#include <sys/types.h>
-
-#if defined __GNU_LIBRARY__ && HAVE_GETDELIM
 
-int
-getline (lineptr, n, stream)
-     char **lineptr;
-     size_t *n;
-     FILE *stream;
+ssize_t
+getline (char **lineptr, size_t *n, FILE *stream)
 {
   return getdelim (lineptr, n, '\n', stream);
 }
-
-
-#else /* ! have getdelim */
-
-#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;
-     size_t 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;
-{
-  return getstr (lineptr, n, stream, '\n', 0);
-}
-
-int
-getdelim (lineptr, n, delimiter, stream)
-     char **lineptr;
-     size_t *n;
-     int delimiter;
-     FILE *stream;
-{
-  return getstr (lineptr, n, stream, delimiter, 0);
-}
-#endif