1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */ 23*0Sstevel@tonic-gate /* All Rights Reserved */ 24*0Sstevel@tonic-gate 25*0Sstevel@tonic-gate 26*0Sstevel@tonic-gate /* 27*0Sstevel@tonic-gate * Copyright (c) 1999 by Sun Microsystems, Inc. 28*0Sstevel@tonic-gate * All rights reserved. 29*0Sstevel@tonic-gate */ 30*0Sstevel@tonic-gate 31*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 32*0Sstevel@tonic-gate 33*0Sstevel@tonic-gate /* 34*0Sstevel@tonic-gate * cscope - interactive C symbol or text cross-reference 35*0Sstevel@tonic-gate * 36*0Sstevel@tonic-gate * command history 37*0Sstevel@tonic-gate */ 38*0Sstevel@tonic-gate 39*0Sstevel@tonic-gate #include <stdio.h> 40*0Sstevel@tonic-gate #include "global.h" 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate HISTORY *head, *tail, *current; 43*0Sstevel@tonic-gate 44*0Sstevel@tonic-gate /* add a cmd to the history list */ 45*0Sstevel@tonic-gate void addcmd(int f,char * s)46*0Sstevel@tonic-gateaddcmd(int f, char *s) 47*0Sstevel@tonic-gate { 48*0Sstevel@tonic-gate HISTORY *h; 49*0Sstevel@tonic-gate 50*0Sstevel@tonic-gate h = (HISTORY *)mymalloc(sizeof (HISTORY)); 51*0Sstevel@tonic-gate if (tail) { 52*0Sstevel@tonic-gate tail->next = h; 53*0Sstevel@tonic-gate h->next = 0; 54*0Sstevel@tonic-gate h->previous = tail; 55*0Sstevel@tonic-gate tail = h; 56*0Sstevel@tonic-gate } else { 57*0Sstevel@tonic-gate head = tail = h; 58*0Sstevel@tonic-gate h->next = h->previous = 0; 59*0Sstevel@tonic-gate } 60*0Sstevel@tonic-gate h->field = f; 61*0Sstevel@tonic-gate h->text = stralloc(s); 62*0Sstevel@tonic-gate current = 0; 63*0Sstevel@tonic-gate } 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate /* return previous history item */ 66*0Sstevel@tonic-gate 67*0Sstevel@tonic-gate HISTORY * prevcmd(void)68*0Sstevel@tonic-gateprevcmd(void) 69*0Sstevel@tonic-gate { 70*0Sstevel@tonic-gate if (current) { 71*0Sstevel@tonic-gate if (current->previous) /* stay on first item */ 72*0Sstevel@tonic-gate return (current = current->previous); 73*0Sstevel@tonic-gate else 74*0Sstevel@tonic-gate return (current); 75*0Sstevel@tonic-gate } else if (tail) 76*0Sstevel@tonic-gate return (current = tail); 77*0Sstevel@tonic-gate else 78*0Sstevel@tonic-gate return (NULL); 79*0Sstevel@tonic-gate } 80*0Sstevel@tonic-gate 81*0Sstevel@tonic-gate /* return next history item */ 82*0Sstevel@tonic-gate 83*0Sstevel@tonic-gate HISTORY * nextcmd(void)84*0Sstevel@tonic-gatenextcmd(void) 85*0Sstevel@tonic-gate { 86*0Sstevel@tonic-gate if (current) { 87*0Sstevel@tonic-gate if (current->next) /* stay on first item */ 88*0Sstevel@tonic-gate return (current = current->next); 89*0Sstevel@tonic-gate else 90*0Sstevel@tonic-gate return (current); 91*0Sstevel@tonic-gate } else 92*0Sstevel@tonic-gate return (NULL); 93*0Sstevel@tonic-gate } 94*0Sstevel@tonic-gate 95*0Sstevel@tonic-gate /* reset current to tail */ 96*0Sstevel@tonic-gate 97*0Sstevel@tonic-gate void resetcmd(void)98*0Sstevel@tonic-gateresetcmd(void) 99*0Sstevel@tonic-gate { 100*0Sstevel@tonic-gate current = 0; 101*0Sstevel@tonic-gate } 102*0Sstevel@tonic-gate 103*0Sstevel@tonic-gate HISTORY * currentcmd(void)104*0Sstevel@tonic-gatecurrentcmd(void) 105*0Sstevel@tonic-gate { 106*0Sstevel@tonic-gate return (current); 107*0Sstevel@tonic-gate } 108