--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/genericopenlibs/cstdlib/LSTDIO/WBUF.C Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,81 @@
+/* WBUF.C
+ *
+ * Portions Copyright (c) 1990-1999 Nokia Corporation and/or its subsidiary(-ies).
+ * All rights reserved.
+ */
+
+/* No user fns here. Pesch 15apr92. */
+
+/*
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley. The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#include <stdio.h>
+#include "LOCAL.H"
+#include "FVWRITE.H"
+
+/*
+ * Write the given character into the (probably full) buffer for
+ * the given file. Flush the buffer out if it is or becomes full,
+ * or if c=='\n' and the file is line buffered.
+ */
+
+int
+__swbuf (register int c,register FILE *fp)
+{
+ register int n;
+
+ /* Ensure stdio has been initialized. */
+
+ CHECK_INIT (fp);
+
+ /*
+ * In case we cannot write, or longjmp takes us out early,
+ * make sure _w is 0 (if fully- or un-buffered) or -_bf._size
+ * (if line buffered) so that we will get called again.
+ * If we did not do this, a sufficient number of putc()
+ * calls might wrap _w from negative to positive.
+ */
+
+ fp->_w = fp->_lbfsize;
+ if (cantwrite (fp))
+ return EOF;
+ c = (unsigned char) c;
+
+ /*
+ * If it is completely full, flush it out. Then, in any case,
+ * stuff c into the buffer. If this causes the buffer to fill
+ * completely, or if c is '\n' and the file is line buffered,
+ * flush it (perhaps a second time). The second flush will always
+ * happen on unbuffered streams, where _bf._size==1; fflush()
+ * guarantees that putc() will always call wbuf() by setting _w
+ * to 0, so we need not do anything else.
+ */
+
+ n = fp->_p - fp->_bf._base;
+ if (n >= fp->_bf._size)
+ {
+ if (fflush (fp))
+ return EOF;
+ n = 0;
+ }
+ fp->_w--;
+ *fp->_p++ = (unsigned char)c;
+ if (++n == fp->_bf._size || (fp->_flags & __SLBF && c == '\n'))
+ if (fflush (fp))
+ return EOF;
+ return c;
+}