diff options
Diffstat (limited to 'lib/libcurses/addbytes.c')
| -rw-r--r-- | lib/libcurses/addbytes.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/lib/libcurses/addbytes.c b/lib/libcurses/addbytes.c new file mode 100644 index 000000000000..3d47b326acf4 --- /dev/null +++ b/lib/libcurses/addbytes.c @@ -0,0 +1,148 @@ +/* + * Copyright (c) 1987 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 5.4 (Berkeley) 6/1/90"; +#endif /* not lint */ + +# include "curses.ext" + +waddbytes(win, bytes, count) +reg WINDOW *win; +reg char *bytes; +int count; +{ + chtype c; + reg int i; + + for (i = 0; i < count; i++) { + c = (unsigned char) *bytes++; + if (_waddbytes(win, &c, 1) == ERR) + return ERR; + } + return OK; +} + +/* + * This routine adds the character to the current position + * + */ +_waddbytes(win, bytes, count) +reg WINDOW *win; +reg chtype *bytes; +reg int count; +{ +#define SYNCH_OUT() {win->_cury = y; win->_curx = x;} +#define SYNCH_IN() {y = win->_cury; x = win->_curx;} + reg int x, y; + reg int newx; + + SYNCH_IN(); + while (count--) { + register chtype c; + static chtype blanks[] = {' ',' ',' ',' ',' ',' ',' ',' '}; + + c = *bytes++; + switch (c) { + case '\t': + SYNCH_OUT(); + if (_waddbytes(win, blanks, 8-(x%8)) == ERR) { + return ERR; + } + SYNCH_IN(); + break; + + default: +# ifdef FULLDEBUG + fprintf(outf, "ADDBYTES: 1: y = %d, x = %d, firstch = %d, lastch = %d\n", y, x, win->_firstch[y], win->_lastch[y]); +# endif + if (win->_flags & _STANDOUT) + c |= _STANDOUT; + { +# ifdef FULLDEBUG + fprintf(outf, "ADDBYTES(%0.2o, %d, %d)\n", win, y, x); +# endif + if (win->_y[y][x] != c) { + newx = x + win->_ch_off; + if (win->_firstch[y] == _NOCHANGE) { + win->_firstch[y] = + win->_lastch[y] = newx; + } else if (newx < win->_firstch[y]) + win->_firstch[y] = newx; + else if (newx > win->_lastch[y]) + win->_lastch[y] = newx; +# ifdef FULLDEBUG + fprintf(outf, "ADDBYTES: change gives f/l: %d/%d [%d/%d]\n", + win->_firstch[y], win->_lastch[y], + win->_firstch[y] - win->_ch_off, + win->_lastch[y] - win->_ch_off); +# endif + } + } + win->_y[y][x++] = c; + if (x >= win->_maxx) { + x = 0; + newline: + if (++y >= win->_maxy) + if (win->_scroll) { + --y; + SYNCH_OUT(); + scroll(win); + SYNCH_IN(); + } + else + return ERR; + } +# ifdef FULLDEBUG + fprintf(outf, "ADDBYTES: 2: y = %d, x = %d, firstch = %d, lastch = %d\n", y, x, win->_firstch[y], win->_lastch[y]); +# 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; +} |