1 files changed, 78 insertions, 0 deletions
diff --git a/roms/ipxe/src/core/lineconsole.c b/roms/ipxe/src/core/lineconsole.c
new file mode 100644
index 000000000..0a72d1434
--- /dev/null
+++ b/roms/ipxe/src/core/lineconsole.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * 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 of the
+ * License, or 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
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 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.
+ *
+ * You can also choose to distribute this program under the terms of
+ * the Unmodified Binary Distribution Licence (as given in the file
+ * COPYING.UBDL), provided that you have satisfied its requirements.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+
+/** @file
+ *
+ * Line-based console
+ *
+ */
+
+#include <stdint.h>
+#include <stddef.h>
+#include <ipxe/ansiesc.h>
+#include <ipxe/lineconsole.h>
+
+/**
+ * Print a character to a line-based console
+ *
+ * @v character		Character to be printed
+ * @ret print		Print line
+ */
+size_t line_putchar ( struct line_console *line, int character ) {
+
+	/* Strip ANSI escape sequences */
+	character = ansiesc_process ( &line->ctx, character );
+	if ( character < 0 )
+		return 0;
+
+	/* Handle backspace characters */
+	if ( character == '\b' ) {
+		if ( line->index )
+			line->index--;
+		return 0;
+	}
+
+	/* Ignore carriage return */
+	if ( character == '\r' )
+		return 0;
+
+	/* Treat newline as a terminator */
+	if ( character == '\n' )
+		character = 0;
+
+	/* Add character to buffer */
+	line->buffer[line->index++] = character;
+
+	/* Do nothing more unless we reach end-of-line (or end-of-buffer) */
+	if ( ( character != 0 ) &&
+	     ( line->index < ( line->len - 1 /* NUL */ ) ) ) {
+		return 0;
+	}
+
+	/* Reset to start of buffer */
+	line->index = 0;
+
+	return 1;
+}