1 /* $NetBSD: ip_screen.c,v 1.2 2013/11/22 15:52:05 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 #ifndef lint 12 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 "; 13 #endif /* not lint */ 14 15 #include <sys/types.h> 16 #include <sys/queue.h> 17 18 #include <bitstring.h> 19 #include <stdio.h> 20 21 #include "../common/common.h" 22 #include "../ipc/ip.h" 23 24 /* 25 * ip_screen -- 26 * Initialize/shutdown the IP screen. 27 * 28 * PUBLIC: int ip_screen __P((SCR *, u_int32_t)); 29 */ 30 int 31 ip_screen(SCR *sp, u_int32_t flags) 32 { 33 GS *gp; 34 IP_PRIVATE *ipp; 35 36 gp = sp->gp; 37 ipp = IPP(sp); 38 39 /* See if the current information is incorrect. */ 40 if (F_ISSET(gp, G_SRESTART)) { 41 if (ip_quit(sp->wp)) 42 return (1); 43 F_CLR(gp, G_SRESTART); 44 } 45 46 /* See if we're already in the right mode. */ 47 if ((LF_ISSET(SC_EX) && F_ISSET(sp, SC_SCR_EX)) || 48 (LF_ISSET(SC_VI) && F_ISSET(sp, SC_SCR_VI))) 49 return (0); 50 51 /* Ex isn't possible if there is no terminal. */ 52 if (LF_ISSET(SC_EX) && ipp->t_fd == -1) 53 return (1); 54 55 if (F_ISSET(sp, SC_SCR_EX)) 56 F_CLR(sp, SC_SCR_EX); 57 58 if (F_ISSET(sp, SC_SCR_VI)) 59 F_CLR(sp, SC_SCR_VI); 60 61 if (LF_ISSET(SC_EX)) { 62 F_SET(ipp, IP_IN_EX); 63 } else { 64 /* Initialize terminal based information. */ 65 if (ip_term_init(sp)) 66 return (1); 67 68 F_CLR(ipp, IP_IN_EX); 69 F_SET(ipp, IP_SCR_VI_INIT); 70 } 71 return (0); 72 } 73 74 /* 75 * ip_quit -- 76 * Shutdown the screens. 77 * 78 * PUBLIC: int ip_quit __P((WIN *)); 79 */ 80 int 81 ip_quit(WIN *wp) 82 { 83 IP_PRIVATE *ipp; 84 int rval; 85 86 /* Clean up the terminal mappings. */ 87 rval = ip_term_end(wp->gp); 88 89 ipp = WIPP(wp); 90 F_CLR(ipp, IP_SCR_VI_INIT); 91 92 return (rval); 93 } 94