Skeletal (non-echoing) version of readline()
authorMichael Brown <mcb30@etherboot.org>
Tue, 19 Dec 2006 22:35:10 +0000 (22:35 +0000)
committerMichael Brown <mcb30@etherboot.org>
Tue, 19 Dec 2006 22:35:10 +0000 (22:35 +0000)
src/hci/readline.c [new file with mode: 0644]
src/include/readline/readline.h [new file with mode: 0644]

diff --git a/src/hci/readline.c b/src/hci/readline.c
new file mode 100644 (file)
index 0000000..3fa5f2d
--- /dev/null
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2006 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <string.h>
+#include <malloc.h>
+#include <console.h>
+#include <gpxe/editstring.h>
+#include <readline/readline.h>
+
+/** @file
+ *
+ * Minimal readline
+ *
+ */
+
+#define READLINE_MAX 256
+
+/**
+ * Read line from console
+ *
+ * @v prompt           Prompt string
+ * @ret line           Line read from console (excluding terminating newline)
+ *
+ * The returned line is allocated with malloc(); the caller must
+ * eventually call free() to release the storage.
+ */
+char * readline ( const char *prompt ) {
+       char buf[READLINE_MAX];
+       struct edit_string string = {
+               .buf = buf,
+               .len = sizeof ( buf ),
+               .cursor = 0,
+       };
+       int key;
+
+       if ( prompt )
+               printf ( "%s", prompt );
+
+       buf[0] = '\0';
+       while ( 1 ) {
+               key = edit_string ( &string, getchar() );
+               switch ( key ) {
+               case 0x0d: /* Carriage return */
+               case 0x0a: /* Line feed */
+                       return ( strdup ( buf ) );
+               case 0x03: /* Ctrl-C */
+                       return NULL;
+               default:
+                       /* Do nothing */
+                       break;
+               }
+       }
+}
diff --git a/src/include/readline/readline.h b/src/include/readline/readline.h
new file mode 100644 (file)
index 0000000..4214a44
--- /dev/null
@@ -0,0 +1,12 @@
+#ifndef _READLINE_H
+#define _READLINE_H
+
+/** @file
+ *
+ * Minmal readline
+ *
+ */
+
+extern char * readline ( const char *prompt );
+
+#endif /* _READLINE_H */