diff options
Diffstat (limited to 'usr.bin/window/wwdelline.c')
| -rw-r--r-- | usr.bin/window/wwdelline.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/usr.bin/window/wwdelline.c b/usr.bin/window/wwdelline.c new file mode 100644 index 0000000..f2aef72 --- /dev/null +++ b/usr.bin/window/wwdelline.c @@ -0,0 +1,88 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Edward Wang at The University of California, Berkeley. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static char sccsid[] = "@(#)wwdelline.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ + +#include "ww.h" + +wwdelline(w, row) +register struct ww *w; +int row; +{ + register i; + register union ww_char **cpp, **cqq; + register union ww_char *cp; + int row1, row2; + char deleted; + int visible; + + /* + * Scroll first. + */ + if ((row1 = row) < w->ww_i.t) { + row1 = w->ww_i.t; + } + if ((row2 = w->ww_b.b) > w->ww_i.b) { + row2 = w->ww_i.b; + visible = 0; + } else + visible = 1; + deleted = wwscroll1(w, row1, row2, 1, visible); + + /* + * Fix the buffer. + * But leave clearing the last line for wwclreol(). + */ + cpp = &w->ww_buf[row]; + cqq = cpp + 1; + cp = *cpp; + for (i = w->ww_b.b - row; --i > 0;) + *cpp++ = *cqq++; + *cpp = cp; + + /* + * Now clear the last line. + */ + if (visible) + wwclreol1(w, w->ww_b.b - 1, w->ww_b.l, deleted); + else { + cp += w->ww_b.l; + for (i = w->ww_b.nc; --i >= 0;) + cp++->c_w = ' '; + } +} |
