1 files changed, 43 insertions, 0 deletions
diff --git a/sys/libc/cflsbuf.c b/sys/libc/cflsbuf.c
new file mode 100644
index 00000000..9547b0c2
--- /dev/null
+++ b/sys/libc/cflsbuf.c
@@ -0,0 +1,43 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+*/
+
+#define	import_spp
+#define	import_libc
+#define	import_xnames
+#define	import_stdio
+#include <iraf.h>
+
+
+/* C_FLSBUF -- Flush the FIO file buffer.  Called by the PUTC macro to flush
+** the file buffer when it fills.  The function value returned is either the
+** first char written to the buffer (passed as an argument) or EOF in the
+** event of an error.
+*/
+int
+c_flsbuf (
+  unsigned int	ch,		/* char which caused the fault	*/
+  FILE	*fp			/* output file			*/
+)
+{
+	register int	buf_not_full;
+	XINT	fd = fileno(fp);
+	XINT	nreserve = 1;
+
+
+	/* If we were called due to flush on newline and there is space in
+	 * the buffer, put the ch in the buffer before flushing.
+	 */
+	buf_not_full = (fp->_iop < fp->_otop);
+	if (buf_not_full)
+	    Memc[fp->_iop++] = (unsigned)ch;
+
+	iferr (FLSBUF (&fd, &nreserve)) {
+	    fp->_fflags |= _FERR;
+	    return (EOF);
+	}
+
+	if (!buf_not_full)
+	    Memc[fp->_iop++] = (unsigned)ch;
+
+	return (ch);
+}