/* $OpenBSD: hack.termcap.c,v 1.9 2016/01/09 18:33:15 mestre Exp $ */ /* * Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica, * Amsterdam * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * - 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. * * - Neither the name of the Stichting Centrum voor Wiskunde en * Informatica, 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER * 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. */ /* * Copyright (c) 1982 Jay Fenlason <hack@gnu.org> * 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. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED ``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 AUTHOR 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. */ #include <curses.h> #include <stdlib.h> #include <term.h> #include "hack.h" static char tbuf[512]; static char *HO, *CL, *CE, *UP, *CM, *ND, *XD, *BC, *SO, *SE, *TI, *TE; static char *VS, *VE; static int SG; static char PC = '\0'; char *CD; /* tested in pri.c: docorner() */ int CO, LI; /* used in pri.c and whatis.c */ static void nocmov(int, int); static void cmov(int, int); static int xputc(int); static void xputs(char *); void startup(void) { char *term; char *tptr; char *tbufptr, *pc; tptr = (char *) alloc(1024); tbufptr = tbuf; if(!(term = getenv("TERM"))) error("Can't get TERM."); if(!strncmp(term, "5620", 4)) flags.nonull = 1; /* this should be a termcap flag */ if(tgetent(tptr, term) < 1) error("Unknown terminal type: %s.", term); if ((pc = tgetstr("pc", &tbufptr))) PC = *pc; if(!(BC = tgetstr("le", &tbufptr))) { if(!tgetflag("bs")) error("Terminal must backspace."); BC = tbufptr; tbufptr += 2; *BC = '\b'; } HO = tgetstr("ho", &tbufptr); CO = tgetnum("co"); LI = tgetnum("li"); if(CO < COLNO || LI < ROWNO+2) setclipped(); if(!(CL = tgetstr("cl", &tbufptr))) error("Hack needs CL."); ND = tgetstr("nd", &tbufptr); if(tgetflag("os")) error("Hack can't have OS."); CE = tgetstr("ce", &tbufptr); UP = tgetstr("up", &tbufptr); /* It seems that xd is no longer supported, and we should use a linefeed instead; unfortunately this requires resetting CRMOD, and many output routines will have to be modified slightly. Let's leave that till the next release. */ XD = tgetstr("xd", &tbufptr); /* not: XD = tgetstr("do", &tbufptr); */ if(!(CM = tgetstr("cm", &tbufptr))) { if(!UP && !HO) error("Hack needs CM or UP or HO."); printf("Playing hack on terminals without cm is suspect...\n"); getret(); } SO = tgetstr("so", &tbufptr); SE = tgetstr("se", &tbufptr); SG = tgetnum("sg"); /* -1: not fnd; else # of spaces left by so */ if(!SO || !SE || (SG > 0)) SO = SE = 0; CD = tgetstr("cd", &tbufptr); set_whole_screen(); /* uses LI and CD */ if(tbufptr-tbuf > sizeof(tbuf)) error("TERMCAP entry too big...\n"); free(tptr); } void start_screen(void) { xputs(TI); xputs(VS); } void end_screen(void) { xputs(VE); xputs(TE); } /* Cursor movements */ extern xchar curx, cury; /* int x, y; not xchar: perhaps xchar is unsigned and * curx-x would be unsigned as well */ void curs(int x, int y) { if (y == cury && x == curx) return; if(!ND && (curx != x || x <= 3)) { /* Extremely primitive */ cmov(x, y); /* bunker!wtm */ return; } if(abs(cury-y) <= 3 && abs(curx-x) <= 3) nocmov(x, y); else if((x <= 3 && abs(cury-y)<= 3) || (!CM && x<abs(curx-x))) { (void) putchar('\r'); curx = 1; nocmov(x, y); } else if(!CM) { nocmov(x, y); } else cmov(x, y); } static void nocmov(int x, int y) { if (cury > y) { if(UP) { while (cury > y) { /* Go up. */ xputs(UP); cury--; } } else if(CM) { cmov(x, y); } else if(HO) { home(); curs(x, y); } /* else impossible("..."); */ } else if (cury < y) { if(XD) { while(cury < y) { xputs(XD); cury++; } } else if(CM) { cmov(x, y); } else { while(cury < y) { xputc('\n'); curx = 1; cury++; } } } if (curx < x) { /* Go to the right. */ if(!ND) cmov(x, y); else /* bah */ /* should instead print what is there already */ while (curx < x) { xputs(ND); curx++; } } else if (curx > x) { while (curx > x) { /* Go to the left. */ xputs(BC); curx--; } } } static void cmov(int x, int y) { xputs(tgoto(CM, x-1, y-1)); cury = y; curx = x; } static int xputc(int c) { return fputc(c, stdout); } static void xputs(char *s) { tputs(s, 1, xputc); } void cl_end(void) { if(CE) xputs(CE); else { /* no-CE fix - free after Harold Rynes */ /* this looks terrible, especially on a slow terminal but is better than nothing */ int cx = curx, cy = cury; while(curx < COLNO) { xputc(' '); curx++; } curs(cx, cy); } } void clr_screen(void) { xputs(CL); curx = cury = 1; } void home(void) { if(HO) xputs(HO); else if(CM) xputs(tgoto(CM, 0, 0)); else curs(1, 1); /* using UP ... */ curx = cury = 1; } void standoutbeg(void) { if(SO) xputs(SO); } void standoutend(void) { if(SE) xputs(SE); } void backsp(void) { xputs(BC); curx--; } void hackbell(void) { (void) putchar('\007'); /* curx does not change */ (void) fflush(stdout); } /* free after Robert Viduya * must only be called with curx = 1 */ void cl_eos(void) { if(CD) xputs(CD); else { int cx = curx, cy = cury; while(cury <= LI-2) { cl_end(); xputc('\n'); curx = 1; cury++; } cl_end(); curs(cx, cy); } }
