1 /* $NetBSD: ip_screen.c,v 1.3 2014/01/26 21:43:45 christos Exp $ */ 2 /*- 3 * Copyright (c) 1996 4 * Keith Bostic. All rights reserved. 5 * 6 * See the LICENSE file for redistribution information. 7 */ 8 9 #include "config.h" 10 11 #include <sys/cdefs.h> 12 #if 0 13 #ifndef lint 14 static const char sccsid[] = "Id: ip_screen.c,v 8.8 2001/06/25 15:19:24 skimo Exp (Berkeley) Date: 2001/06/25 15:19:24 "; 15 #endif /* not lint */ 16 #else 17 __RCSID("$NetBSD: ip_screen.c,v 1.3 2014/01/26 21:43:45 christos Exp $"); 18 #endif 19 20 #include <sys/types.h> 21 #include <sys/queue.h> 22 23 #include <bitstring.h> 24 #include <stdio.h> 25 26 #include "../common/common.h" 27 #include "../ipc/ip.h" 28 29 /* 30 * ip_screen -- 31 * Initialize/shutdown the IP screen. 32 * 33 * PUBLIC: int ip_screen __P((SCR *, u_int32_t)); 34 */ 35 int 36 ip_screen(SCR *sp, u_int32_t flags) 37 { 38 GS *gp; 39 IP_PRIVATE *ipp; 40 41 gp = sp->gp; 42 ipp = IPP(sp); 43 44 /* See if the current information is incorrect. */ 45 if (F_ISSET(gp, G_SRESTART)) { 46 if (ip_quit(sp->wp)) 47 return (1); 48 F_CLR(gp, G_SRESTART); 49 } 50 51 /* See if we're already in the right mode. */ 52 if ((LF_ISSET(SC_EX) && F_ISSET(sp, SC_SCR_EX)) || 53 (LF_ISSET(SC_VI) && F_ISSET(sp, SC_SCR_VI))) 54 return (0); 55 56 /* Ex isn't possible if there is no terminal. */ 57 if (LF_ISSET(SC_EX) && ipp->t_fd == -1) 58 return (1); 59 60 if (F_ISSET(sp, SC_SCR_EX)) 61 F_CLR(sp, SC_SCR_EX); 62 63 if (F_ISSET(sp, SC_SCR_VI)) 64 F_CLR(sp, SC_SCR_VI); 65 66 if (LF_ISSET(SC_EX)) { 67 F_SET(ipp, IP_IN_EX); 68 } else { 69 /* Initialize terminal based information. */ 70 if (ip_term_init(sp)) 71 return (1); 72 73 F_CLR(ipp, IP_IN_EX); 74 F_SET(ipp, IP_SCR_VI_INIT); 75 } 76 return (0); 77 } 78 79 /* 80 * ip_quit -- 81 * Shutdown the screens. 82 * 83 * PUBLIC: int ip_quit __P((WIN *)); 84 */ 85 int 86 ip_quit(WIN *wp) 87 { 88 IP_PRIVATE *ipp; 89 int rval; 90 91 /* Clean up the terminal mappings. */ 92 rval = ip_term_end(wp->gp); 93 94 ipp = WIPP(wp); 95 F_CLR(ipp, IP_SCR_VI_INIT); 96 97 return (rval); 98 } 99