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 | } |