| File: | src/usr.bin/vi/build/../ex/ex_screen.c |
| Warning: | line 111, column 8 Although the value stored to 'len' is used in the enclosing expression, the value is never actually read from 'len' |
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| 1 | /* $OpenBSD: ex_screen.c,v 1.10 2016/01/06 22:28:52 millert Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 1993, 1994 |
| 5 | * The Regents of the University of California. All rights reserved. |
| 6 | * Copyright (c) 1993, 1994, 1995, 1996 |
| 7 | * Keith Bostic. All rights reserved. |
| 8 | * |
| 9 | * See the LICENSE file for redistribution information. |
| 10 | */ |
| 11 | |
| 12 | #include "config.h" |
| 13 | |
| 14 | #include <sys/types.h> |
| 15 | #include <sys/queue.h> |
| 16 | #include <sys/time.h> |
| 17 | |
| 18 | #include <bitstring.h> |
| 19 | #include <limits.h> |
| 20 | #include <stdio.h> |
| 21 | #include <stdlib.h> |
| 22 | #include <string.h> |
| 23 | |
| 24 | #include "../common/common.h" |
| 25 | #include "../vi/vi.h" |
| 26 | |
| 27 | /* |
| 28 | * ex_bg -- :bg |
| 29 | * Hide the screen. |
| 30 | * |
| 31 | * PUBLIC: int ex_bg(SCR *, EXCMD *); |
| 32 | */ |
| 33 | int |
| 34 | ex_bg(SCR *sp, EXCMD *cmdp) |
| 35 | { |
| 36 | return (vs_bg(sp)); |
| 37 | } |
| 38 | |
| 39 | /* |
| 40 | * ex_fg -- :fg [file] |
| 41 | * Show the screen. |
| 42 | * |
| 43 | * PUBLIC: int ex_fg(SCR *, EXCMD *); |
| 44 | */ |
| 45 | int |
| 46 | ex_fg(SCR *sp, EXCMD *cmdp) |
| 47 | { |
| 48 | SCR *nsp; |
| 49 | int newscreen; |
| 50 | |
| 51 | newscreen = F_ISSET(cmdp, E_NEWSCREEN)(((cmdp)->flags) & ((0x00000100))); |
| 52 | if (vs_fg(sp, &nsp, cmdp->argc ? cmdp->argv[0]->bp : NULL((void *)0), newscreen)) |
| 53 | return (1); |
| 54 | |
| 55 | /* Set up the switch. */ |
| 56 | if (newscreen) { |
| 57 | sp->nextdisp = nsp; |
| 58 | F_SET(sp, SC_SSWITCH)(((sp)->flags) |= ((0x00001000))); |
| 59 | } |
| 60 | return (0); |
| 61 | } |
| 62 | |
| 63 | /* |
| 64 | * ex_resize -- :resize [+-]rows |
| 65 | * Change the screen size. |
| 66 | * |
| 67 | * PUBLIC: int ex_resize(SCR *, EXCMD *); |
| 68 | */ |
| 69 | int |
| 70 | ex_resize(SCR *sp, EXCMD *cmdp) |
| 71 | { |
| 72 | adj_t adj; |
| 73 | |
| 74 | switch (FL_ISSET(cmdp->iflags,((cmdp->iflags) & (0x00004 | 0x00008 | 0x00010)) |
| 75 | E_C_COUNT | E_C_COUNT_NEG | E_C_COUNT_POS)((cmdp->iflags) & (0x00004 | 0x00008 | 0x00010))) { |
| 76 | case E_C_COUNT0x00004: |
| 77 | adj = A_SET; |
| 78 | break; |
| 79 | case E_C_COUNT0x00004 | E_C_COUNT_NEG0x00008: |
| 80 | adj = A_DECREASE; |
| 81 | break; |
| 82 | case E_C_COUNT0x00004 | E_C_COUNT_POS0x00010: |
| 83 | adj = A_INCREASE; |
| 84 | break; |
| 85 | default: |
| 86 | ex_emsg(sp, cmdp->cmd->usage, EXM_USAGE); |
| 87 | return (1); |
| 88 | } |
| 89 | return (vs_resize(sp, cmdp->count, adj)); |
| 90 | } |
| 91 | |
| 92 | /* |
| 93 | * ex_sdisplay -- |
| 94 | * Display the list of screens. |
| 95 | * |
| 96 | * PUBLIC: int ex_sdisplay(SCR *); |
| 97 | */ |
| 98 | int |
| 99 | ex_sdisplay(SCR *sp) |
| 100 | { |
| 101 | GS *gp; |
| 102 | SCR *tsp; |
| 103 | int cnt, col, len, sep; |
| 104 | |
| 105 | gp = sp->gp; |
| 106 | if (TAILQ_EMPTY(&gp->hq)(((&gp->hq)->tqh_first) == ((void *)0))) { |
| 107 | msgq(sp, M_INFO, "No background screens to display"); |
| 108 | return (0); |
| 109 | } |
| 110 | |
| 111 | col = len = sep = 0; |
Although the value stored to 'len' is used in the enclosing expression, the value is never actually read from 'len' | |
| 112 | cnt = 1; |
| 113 | TAILQ_FOREACH(tsp, &gp->hq, q)for((tsp) = ((&gp->hq)->tqh_first); (tsp) != ((void *)0); (tsp) = ((tsp)->q.tqe_next)) { |
| 114 | if (INTERRUPTED(sp)(((((sp)->gp)->flags) & ((0x0004))) || (!v_event_get ((sp), ((void *)0), 0, 0x001) && ((((sp)->gp)-> flags) & ((0x0004)))))) |
| 115 | break; |
| 116 | col += len = strlen(tsp->frp->name) + sep; |
| 117 | if (col >= sp->cols - 1) { |
| 118 | col = len; |
| 119 | sep = 0; |
| 120 | (void)ex_puts(sp, "\n"); |
| 121 | } else if (cnt != 1) { |
| 122 | sep = 1; |
| 123 | (void)ex_puts(sp, " "); |
| 124 | } |
| 125 | (void)ex_puts(sp, tsp->frp->name); |
| 126 | ++cnt; |
| 127 | } |
| 128 | if (!INTERRUPTED(sp)(((((sp)->gp)->flags) & ((0x0004))) || (!v_event_get ((sp), ((void *)0), 0, 0x001) && ((((sp)->gp)-> flags) & ((0x0004)))))) |
| 129 | (void)ex_puts(sp, "\n"); |
| 130 | return (0); |
| 131 | } |