1 files changed, 58 insertions, 0 deletions
diff --git a/sys/libc/sprintf.c b/sys/libc/sprintf.c
new file mode 100644
index 00000000..24d408a0
--- /dev/null
+++ b/sys/libc/sprintf.c
@@ -0,0 +1,58 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+*/
+
+#define	import_spp
+#define	import_libc
+#define	import_xnames
+#define	import_stdio
+#define	import_stdarg
+#include <iraf.h>
+
+#define	SZ_OBUF		SZ_COMMAND	/* sz intermediate buffer	*/
+
+
+/* SPRINTF -- Formatted print to a string.  If char and XCHAR are the
+** same size we open the output string as a file and write directly into
+** it.  Otherwise we must write into an intermediate buffer, then pack
+** XCHAR into the char output string.  This is not as bad as it sounds
+** as the operation is negligible compared to the encoding operation.
+*/
+char *
+sprintf (char *str, char *format, ...)
+{
+	register XCHAR	*ip;
+	register char	*op;
+	XCHAR obuf[SZ_OBUF], *fiobuf;
+	XINT x_fd, x_maxch = SZ_OBUF, x_mode = NEW_FILE;
+	va_list	argp;
+
+	extern int  u_doprnt();
+
+
+	va_start (argp, format);
+
+	/* Select output buffer. */
+	if (sizeof (XCHAR) == sizeof (char))
+	    fiobuf = (XCHAR *)str;
+	else
+	    fiobuf = obuf;
+
+	/* Make it the file buffer.  Call FIO to open the string as a file.
+	 */
+	x_fd = STROPEN (fiobuf, &x_maxch, &x_mode);
+
+	/* Format the data into obuf.  */
+	u_doprnt (format, &argp, FDTOFP(x_fd));
+
+	/* FIO does not write the EOS until the string file is closed.
+	 * Move obuf to str if it is not already there.
+	 */
+	CLOSE (&x_fd);
+	if (fiobuf == obuf)
+	    for (ip=obuf, op=str;  (*op++ = *ip++) != EOS;  )
+		;
+
+	va_end (argp);
+
+	return (str);
+}