diff options
Diffstat (limited to 'lib/libcurses/addbytes.c')
| -rw-r--r-- | lib/libcurses/addbytes.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/lib/libcurses/addbytes.c b/lib/libcurses/addbytes.c new file mode 100644 index 0000000..5ec3a06 --- /dev/null +++ b/lib/libcurses/addbytes.c @@ -0,0 +1,157 @@ +/* + * Copyright (c) 1987, 1993 + * The Regents of the University of California. All rights reserved. + * + * 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[] = "@(#)addbytes.c 8.3 (Berkeley) 3/19/94"; +#endif /* not lint */ + +#include <curses.h> + +#define SYNCH_IN {y = win->cury; x = win->curx;} +#define SYNCH_OUT {win->cury = y; win->curx = x;} + +/* + * waddbytes -- + * Add the character to the current position in the given window. + */ +int +__waddbytes(win, bytes, count, so) + register WINDOW *win; + register const char *bytes; + register int count; + int so; +{ + static char blanks[] = " "; + register int c, newx, x, y; + char stand; + __LINE *lp; + + SYNCH_IN; + +#ifdef DEBUG + __CTRACE("ADDBYTES('%c') at (%d, %d)\n", c, y, x); +#endif + while (count--) { + c = *bytes++; + switch (c) { + case '\t': + SYNCH_OUT; + if (waddbytes(win, blanks, 8 - (x % 8)) == ERR) + return (ERR); + SYNCH_IN; + break; + + default: +#ifdef DEBUG + __CTRACE("ADDBYTES(%0.2o, %d, %d)\n", win, y, x); +#endif + + lp = win->lines[y]; + if (lp->flags & __ISPASTEOL) { + lp->flags &= ~__ISPASTEOL; +newline: if (y == win->maxy - 1) { + if (win->flags & __SCROLLOK) { + SYNCH_OUT; + scroll(win); + SYNCH_IN; + lp = win->lines[y]; + x = 0; + } else + return (ERR); + } else { + y++; + lp = win->lines[y]; + x = 0; + } + if (c == '\n') + break; + } + + stand = '\0'; + if (win->flags & __WSTANDOUT || so) + stand |= __STANDOUT; +#ifdef DEBUG + __CTRACE("ADDBYTES: 1: y = %d, x = %d, firstch = %d, lastch = %d\n", + y, x, *win->lines[y]->firstchp, *win->lines[y]->lastchp); +#endif + if (lp->line[x].ch != c || + !(lp->line[x].attr & stand)) { + newx = x + win->ch_off; + if (!(lp->flags & __ISDIRTY)) { + lp->flags |= __ISDIRTY; + *lp->firstchp = *lp->lastchp = newx; + } + else if (newx < *lp->firstchp) + *lp->firstchp = newx; + else if (newx > *lp->lastchp) + *lp->lastchp = newx; +#ifdef DEBUG + __CTRACE("ADDBYTES: change gives f/l: %d/%d [%d/%d]\n", + *lp->firstchp, *lp->lastchp, + *lp->firstchp - win->ch_off, + *lp->lastchp - win->ch_off); +#endif + } + lp->line[x].ch = c; + if (stand) + lp->line[x].attr |= __STANDOUT; + else + lp->line[x].attr &= ~__STANDOUT; + if (x == win->maxx - 1) + lp->flags |= __ISPASTEOL; + else + x++; +#ifdef DEBUG + __CTRACE("ADDBYTES: 2: y = %d, x = %d, firstch = %d, lastch = %d\n", + y, x, *win->lines[y]->firstchp, *win->lines[y]->lastchp); +#endif + break; + case '\n': + SYNCH_OUT; + wclrtoeol(win); + SYNCH_IN; + if (!NONL) + x = 0; + goto newline; + case '\r': + x = 0; + break; + case '\b': + if (--x < 0) + x = 0; + break; + } + } + SYNCH_OUT; + return (OK); +} |
