Return to getsn.c CVS log

Up to [local] / sys / lib / libkern

Annotation of sys/lib/libkern/getsn.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: getsn.c,v 1.5 2007/05/03 01:21:32 deraadt Exp $       */
        !             2:
        !             3: /*
        !             4:  * Copyright (c) 1996 Theo de Raadt
        !             5:  * All rights reserved.
        !             6:  *
        !             7:  * Redistribution and use in source and binary forms, with or without
        !             8:  * modification, are permitted provided that the following conditions
        !             9:  * are met:
        !            10:  * 1. Redistributions of source code must retain the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer.
        !            12:  * 2. Redistributions in binary form must reproduce the above copyright
        !            13:  *    notice, this list of conditions and the following disclaimer in the
        !            14:  *    documentation and/or other materials provided with the distribution.
        !            15:  *
        !            16:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
        !            17:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
        !            18:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
        !            19:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
        !            20:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
        !            21:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
        !            22:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
        !            23:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
        !            24:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
        !            25:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
        !            26:  */
        !            27:
        !            28: #include <sys/cdefs.h>
        !            29: #include <sys/types.h>
        !            30: #include <sys/systm.h>
        !            31: #include <dev/cons.h>
        !            32:
        !            33: int
        !            34: getsn(char *cp, int size)
        !            35: {
        !            36:        int len = 0, c;
        !            37:        char *lp = cp;
        !            38:
        !            39:        while (1) {
        !            40:                c = cngetc();
        !            41:                switch (c) {
        !            42:                case '\n':
        !            43:                case '\r':
        !            44:                        printf("\n");
        !            45:                        *lp++ = '\0';
        !            46:                        return (len);
        !            47:                case '\b':
        !            48:                case '\177':
        !            49:                        if (len) {
        !            50:                                printf("\b \b");
        !            51:                                --lp;
        !            52:                                --len;
        !            53:                        }
        !            54:                        break;
        !            55:                case 'u' & 037:
        !            56:                        while (len) {
        !            57:                                printf("\b \b");
        !            58:                                --lp;
        !            59:                                --len;
        !            60:                        }
        !            61:                        break;
        !            62:                case '\t':
        !            63:                        c = ' ';
        !            64:                default:
        !            65:                        if (len + 1 >= size || c < ' ') {
        !            66:                                printf("\007");
        !            67:                                break;
        !            68:                        }
        !            69:                        printf("%c", c);
        !            70:                        ++len;
        !            71:                        *lp++ = c;
        !            72:                }
        !            73:        }
        !            74: }