Mon May 6 09:51:05 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>

	* stdio/linewrap.c: New file.
	* stdio/Makefile (routines): Add linewrap.
	* stdio/stdio.h [__USE_GNU]: Declare line_wrap_stream,
	line_unwrap_stream.

1 files changed, 17 insertions, 1 deletions

diff --git a/stdio/stdio.h b/stdio/stdio.h
index 349b9c3..efaf2b9 100644
--- a/stdio/stdio.h
+++ b/stdio/stdio.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc.
 This file is part of the GNU C Library.
 
 The GNU C Library is free software; you can redistribute it and/or
@@ -353,6 +353,22 @@ extern FILE *fmemopen __P ((__ptr_t __s, size_t __len, __const char *__modes));
    necessary.  *BUFLOC and *SIZELOC are updated with the buffer's location
    and the number of characters written on fflush or fclose.  */
 extern FILE *open_memstream __P ((char **__bufloc, size_t *__sizeloc));
+
+
+/* Modify STREAM so that it prefixes lines written on it with *LMARGIN
+   spaces and limits them to *RMARGIN columns total.  If WRAP is not null,
+   words that extend past *RMARGIN are wrapped by replacing the whitespace
+   before them with a newline and *WRAP spaces.  Otherwise, chars beyond
+   *RMARGIN are simply dropped until a newline.  Returns STREAM after
+   modifying it, or NULL if there was an error.  The pointers passed are
+   stored in the stream and so must remain valid until `line_unwrap_stream'
+   is called; the values pointed to can be changed between stdio calls.  */
+extern FILE *line_wrap_stream __P ((FILE *__stream,
+				    size_t *__lmargin, size_t *__rmargin,
+				    size_t *__wrap));
+
+/* Remove the hooks placed in STREAM by `line_wrap_stream'.  */
+extern void line_unwrap_stream __P ((FILE *__stream));
 #endif