Make fflush after ungetc work on BSD platforms.

[gnulib.git] / lib / linebuffer.c

diff --git a/lib/linebuffer.c b/lib/linebuffer.c
index 3f1e45b..90e4cca 100644 (file)
--- a/lib/linebuffer.c
+++ b/lib/linebuffer.c
@@ -1,12 +1,12 @@
 /* linebuffer.c -- read arbitrarily long lines
 
-   Copyright (C) 1986, 1991, 1998, 1999, 2001, 2003, 2004, 2006 Free
-   Software Foundation, Inc.
+   Copyright (C) 1986, 1991, 1998, 1999, 2001, 2003, 2004, 2006, 2007
+   Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   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.
+   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
@@ -14,8 +14,7 @@
    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, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 /* Written by Richard Stallman. */
 
@@ -40,17 +39,25 @@ initbuffer (struct linebuffer *linebuffer)
   memset (linebuffer, 0, sizeof *linebuffer);
 }
 
+struct linebuffer *
+readlinebuffer (struct linebuffer *linebuffer, FILE *stream)
+{
+  return readlinebuffer_delim (linebuffer, stream, '\n');
+}
+
 /* Read an arbitrarily long line of text from STREAM into LINEBUFFER.
-   Keep the newline; append a newline if it's the last line of a file
-   that ends in a non-newline character.  Do not null terminate.
+   Consider lines to be terminated by DELIMITER.
+   Keep the delimiter; append DELIMITER if it's the last line of a file
+   that ends in a character other than DELIMITER.  Do not NUL-terminate.
    Therefore the stream can contain NUL bytes, and the length
-   (including the newline) is returned in linebuffer->length.
+   (including the delimiter) is returned in linebuffer->length.
    Return NULL when stream is empty.  Return NULL and set errno upon
    error; callers can distinguish this case from the empty case by
    invoking ferror (stream).
    Otherwise, return LINEBUFFER.  */
 struct linebuffer *
-readlinebuffer (struct linebuffer *linebuffer, FILE *stream)
+readlinebuffer_delim (struct linebuffer *linebuffer, FILE *stream,
+                     char delimiter)
 {
   int c;
   char *buffer = linebuffer->buffer;
@@ -67,9 +74,9 @@ readlinebuffer (struct linebuffer *linebuffer, FILE *stream)
        {
          if (p == buffer || ferror (stream))
            return NULL;
-         if (p[-1] == '\n')
+         if (p[-1] == delimiter)
            break;
-         c = '\n';
+         c = delimiter;
        }
       if (p == end)
        {
@@ -81,7 +88,7 @@ readlinebuffer (struct linebuffer *linebuffer, FILE *stream)
        }
       *p++ = c;
     }
-  while (c != '\n');
+  while (c != delimiter);
 
   linebuffer->length = p - buffer;
   return linebuffer;