diff options
| -rw-r--r-- | src/hci/readline.c | 68 | ||||
| -rw-r--r-- | src/include/readline/readline.h | 12 |
2 files changed, 80 insertions, 0 deletions
diff --git a/src/hci/readline.c b/src/hci/readline.c new file mode 100644 index 000000000..3fa5f2d4a --- /dev/null +++ b/src/hci/readline.c @@ -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 index 000000000..4214a44ff --- /dev/null +++ b/src/include/readline/readline.h @@ -0,0 +1,12 @@ +#ifndef _READLINE_H +#define _READLINE_H + +/** @file + * + * Minmal readline + * + */ + +extern char * readline ( const char *prompt ); + +#endif /* _READLINE_H */ |