projects / apple / shell_cmds.git / blame
| Commit | Line | Data |
|---|---|---|
| 44bd5ea7 A |
1 | /* $NetBSD: wwinsline.c,v 1.4 1997/11/21 08:37:29 lukem Exp $ */ |
| 2 | ||
| 3 | /* | |
| 4 | * Copyright (c) 1983, 1993 | |
| 5 | * The Regents of the University of California. All rights reserved. | |
| 6 | * | |
| 7 | * This code is derived from software contributed to Berkeley by | |
| 8 | * Edward Wang at The University of California, Berkeley. | |
| 9 | * | |
| 10 | * Redistribution and use in source and binary forms, with or without | |
| 11 | * modification, are permitted provided that the following conditions | |
| 12 | * are met: | |
| 13 | * 1. Redistributions of source code must retain the above copyright | |
| 14 | * notice, this list of conditions and the following disclaimer. | |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 16 | * notice, this list of conditions and the following disclaimer in the | |
| 17 | * documentation and/or other materials provided with the distribution. | |
| 18 | * 3. All advertising materials mentioning features or use of this software | |
| 19 | * must display the following acknowledgement: | |
| 20 | * This product includes software developed by the University of | |
| 21 | * California, Berkeley and its contributors. | |
| 22 | * 4. Neither the name of the University nor the names of its contributors | |
| 23 | * may be used to endorse or promote products derived from this software | |
| 24 | * without specific prior written permission. | |
| 25 | * | |
| 26 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 27 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 28 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 29 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 30 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 31 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 32 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 33 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 34 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 35 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 36 | * SUCH DAMAGE. | |
| 37 | */ | |
| 38 | ||
| 39 | #include <sys/cdefs.h> | |
| 40 | #ifndef lint | |
| 41 | #if 0 | |
| 42 | static char sccsid[] = "@(#)wwinsline.c 8.1 (Berkeley) 6/6/93"; | |
| 43 | #else | |
| 44 | __RCSID("$NetBSD: wwinsline.c,v 1.4 1997/11/21 08:37:29 lukem Exp $"); | |
| 45 | #endif | |
| 46 | #endif /* not lint */ | |
| 47 | ||
| 48 | #include "ww.h" | |
| 49 | ||
| 50 | void | |
| 51 | wwinsline(w, row) | |
| 52 | struct ww *w; | |
| 53 | int row; | |
| 54 | { | |
| 55 | int i; | |
| 56 | union ww_char **cpp, **cqq; | |
| 57 | union ww_char *cp; | |
| 58 | int row1, row2; | |
| 59 | char deleted; | |
| 60 | int visible; | |
| 61 | ||
| 62 | /* | |
| 63 | * Scroll first. | |
| 64 | */ | |
| 65 | if ((row1 = row) < w->ww_i.t) { | |
| 66 | row1 = w->ww_i.t; | |
| 67 | visible = 0; | |
| 68 | } else | |
| 69 | visible = 1; | |
| 70 | if ((row2 = w->ww_b.b) > w->ww_i.b) { | |
| 71 | row2 = w->ww_i.b; | |
| 72 | } | |
| 73 | deleted = wwscroll1(w, row1, row2, -1, visible); | |
| 74 | ||
| 75 | /* | |
| 76 | * Fix the buffer. | |
| 77 | * But leave clearing the last line for wwclreol(). | |
| 78 | */ | |
| 79 | cpp = &w->ww_buf[w->ww_b.b]; | |
| 80 | cqq = cpp - 1; | |
| 81 | cp = *cqq; | |
| 82 | for (i = w->ww_b.b - row; --i > 0;) | |
| 83 | *--cpp = *--cqq; | |
| 84 | *cqq = cp; | |
| 85 | ||
| 86 | /* | |
| 87 | * Now clear the last line. | |
| 88 | */ | |
| 89 | if (visible) | |
| 90 | wwclreol1(w, row, w->ww_b.l, deleted); | |
| 91 | else { | |
| 92 | cp += w->ww_b.l; | |
| 93 | for (i = w->ww_b.nc; --i >= 0;) | |
| 94 | cp++->c_w = ' '; | |
| 95 | } | |
| 96 | } |