69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
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/*
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* Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <string.h>
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#include <malloc.h>
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#include <console.h>
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#include <gpxe/editstring.h>
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#include <readline/readline.h>
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/** @file
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*
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* Minimal readline
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*
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*/
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#define READLINE_MAX 256
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/**
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* Read line from console
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*
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* @v prompt Prompt string
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* @ret line Line read from console (excluding terminating newline)
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*
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* The returned line is allocated with malloc(); the caller must
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* eventually call free() to release the storage.
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*/
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char * readline ( const char *prompt ) {
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char buf[READLINE_MAX];
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struct edit_string string = {
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.buf = buf,
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.len = sizeof ( buf ),
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.cursor = 0,
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};
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int key;
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if ( prompt )
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printf ( "%s", prompt );
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buf[0] = '\0';
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while ( 1 ) {
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key = edit_string ( &string, getchar() );
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switch ( key ) {
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case 0x0d: /* Carriage return */
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case 0x0a: /* Line feed */
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return ( strdup ( buf ) );
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case 0x03: /* Ctrl-C */
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return NULL;
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default:
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/* Do nothing */
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break;
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}
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}
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}
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