1 /* 2 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 7 /* All Rights Reserved */ 8 9 /* 10 * Copyright (c) 1980 Regents of the University of California. 11 * All rights reserved. The Berkeley software License Agreement 12 * specifies the terms and conditions for redistribution. 13 */ 14 15 #pragma ident "%Z%%M% %I% %E% SMI" 16 17 #ifndef lint 18 static char 19 sccsid[] = "@(#)addch.c 1.6 88/02/08 SMI"; /* from UCB 5.1 85/06/07 */ 20 #endif /* not lint */ 21 22 #include "curses.ext" 23 24 /* forward declaration */ 25 static void set_ch(WINDOW *, int, int, int); 26 27 /* 28 * This routine adds the character to the current position 29 */ 30 31 int 32 waddch(WINDOW *win, char c) 33 { 34 int x, y; 35 int newx; 36 37 x = win->_curx; 38 y = win->_cury; 39 #ifdef FULLDEBUG 40 fprintf(outf, "ADDCH('%c') at (%d, %d)\n", c, y, x); 41 #endif 42 switch (c) { 43 case '\t': 44 for (newx = x + (8 - (x & 07)); x < newx; x++) 45 if (waddch(win, ' ') == ERR) 46 return (ERR); 47 return (OK); 48 49 default: 50 #ifdef FULLDEBUG 51 fprintf(outf, "ADDCH: 1: y = %d, x = %d, firstch = %d," 52 " lastch = %d\n", y, x, win->_firstch[y], 53 win->_lastch[y]); 54 #endif 55 if (win->_flags & _STANDOUT) 56 c |= _STANDOUT; 57 set_ch(win, y, x, c); 58 win->_y[y][x++] = c; 59 if (x >= win->_maxx) { 60 x = 0; 61 newline: 62 if (++y >= win->_maxy) 63 if (win->_scroll) { 64 (void) scroll(win); 65 --y; 66 } 67 else 68 return (ERR); 69 } 70 #ifdef FULLDEBUG 71 fprintf(outf, "ADDCH: 2: y = %d, x = %d, firstch = %d," 72 " lastch = %d\n", y, x, win->_firstch[y], 73 win->_lastch[y]); 74 #endif 75 break; 76 case '\n': 77 (void) wclrtoeol(win); 78 if (!NONL) 79 x = 0; 80 goto newline; 81 case '\r': 82 x = 0; 83 break; 84 case '\b': 85 if (--x < 0) 86 x = 0; 87 break; 88 } 89 win->_curx = (short)x; 90 win->_cury = (short)y; 91 return (OK); 92 } 93 94 /* 95 * set_ch: 96 * Set the first and last change flags for this window. 97 */ 98 99 static void 100 set_ch(WINDOW *win, int y, int x, int ch) 101 { 102 #ifdef FULLDEBUG 103 fprintf(outf, "SET_CH(%0.2o, %d, %d)\n", win, y, x); 104 #endif 105 if (win->_y[y][x] != ch) { 106 x += win->_ch_off; 107 if (win->_firstch[y] == _NOCHANGE) 108 win->_firstch[y] = win->_lastch[y] = (short)x; 109 else if (x < win->_firstch[y]) 110 win->_firstch[y] = (short)x; 111 else if (x > win->_lastch[y]) 112 win->_lastch[y] = (short)x; 113 #ifdef FULLDEBUG 114 fprintf(outf, "SET_CH: change gives f/l: %d/%d [%d/%d]\n", 115 win->_firstch[y], win->_lastch[y], 116 win->_firstch[y] - win->_ch_off, 117 win->_lastch[y] - win->_ch_off); 118 #endif 119 } 120 } 121