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Source:NetHack 1.4f/termcap.c

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Below is the full text to termcap.c from the source code of NetHack 1.4f. To link to a particular line, write [[NetHack 1.4f/termcap.c#line123]], for example.

Warning! This is the source code from an old release. For the latest release, see Source code

Screenshots and source code from Hack are used under the CWI license.
1.    /*	SCCS Id: @(#)termcap.c	1.4	87/08/08
2.    /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
3.    /* termcap.c - version 1.0.3 */
4.    
5.    #include <stdio.h>
6.    #include <ctype.h>	/* for isdigit() */
7.    #include "config.h"	/* for ROWNO and COLNO */
8.    #include "hack.h"	/* for  *HI, *HE */
9.    #ifdef GENIX
10.   #define	void	int	/* jhn - mod to prevent compiler from bombing */
11.   #endif
12.   
13.   extern char *tgetstr(), *tgoto(), *getenv();
14.   extern long *alloc();
15.   
16.   #ifndef TERMINFO
17.   # ifndef lint
18.   extern			/* it is defined in libtermlib (libtermcap) */
19.   # endif
20.   	short ospeed;		/* terminal baudrate; used by tputs */
21.   #endif
22.   static char tbuf[512];
23.   static char *HO, *CL, *CE, *UP, *CM, *ND, *XD, *BC, *SO, *SE, *TI, *TE;
24.   static char *VS, *VE;
25.   static int SG;
26.   static char PC = '\0';
27.   char *CD;		/* tested in pri.c: docorner() */
28.   int CO, LI;		/* used in pri.c and whatis.c */
29.   
30.   #ifdef MSDOS
31.   static char tgotobuf[20];
32.   #define tgoto(fmt, x, y)	(sprintf(tgotobuf, fmt, y+1, x+1), tgotobuf)
33.   #endif /* MSDOS /**/
34.   
35.   startup()
36.   {
37.   #ifdef MSDOS
38.   	HO = "\033[H";
39.   	CL = "\033[2J";
40.   	CE = "\033[K";
41.   	UP = "\033[1A";
42.   	CM = "\033[%d;%dH";	/* used with function tgoto() */
43.   	ND = "\033[1C";
44.   	XD = "\033[1B";
45.   	BC = "\033[1D";
46.   	SO = "\033[7m";
47.   	SE = "\033[0m";
48.   	TI = TE = VS = VE = "";
49.   	CD = "\033";
50.   	CO = COLNO;
51.   	LI = ROWNO;
52.   #if defined(DGK) || defined(SORTING)
53.   	/* Both HI and HE have 4 characters.  The function let_to_name()
54.   	 * in msdos.c uses this length when creating a buffer.  If you
55.   	 * make HI and HE longer, you must also change the length of buf[]
56.   	 * in let_to_name()
57.   	 */
58.   	HI = "\033[4m";
59.   	HE = "\033[0m";
60.   #endif
61.   #else
62.   	register char *term;
63.   	register char *tptr;
64.   	char *tbufptr, *pc;
65.   	register int i;
66.   
67.   	tptr = (char *) alloc(1024);
68.   
69.   	tbufptr = tbuf;
70.   	if(!(term = getenv("TERM")))
71.   		error("Can't get TERM.");
72.   	if(!strncmp(term, "5620", 4))
73.   		flags.nonull = 1;	/* this should be a termcap flag */
74.   	if(tgetent(tptr, term) < 1)
75.   		error("Unknown terminal type: %s.", term);
76.   	if(pc = tgetstr("pc", &tbufptr))
77.   		PC = *pc;
78.   	if(!(BC = tgetstr("bc", &tbufptr))) {	
79.   		if(!tgetflag("bs"))
80.   			error("Terminal must backspace.");
81.   		BC = tbufptr;
82.   		tbufptr += 2;
83.   		*BC = '\b';
84.   	}
85.   	HO = tgetstr("ho", &tbufptr);
86.   	CO = tgetnum("co");
87.   	LI = tgetnum("li");
88.   	if(CO < COLNO || LI < ROWNO+2)
89.   		setclipped();
90.   	if(!(CL = tgetstr("cl", &tbufptr)))
91.   		error("Hack needs CL.");
92.   	ND = tgetstr("nd", &tbufptr);
93.   	if(tgetflag("os"))
94.   		error("Hack can't have OS.");
95.   	CE = tgetstr("ce", &tbufptr);
96.   	UP = tgetstr("up", &tbufptr);
97.   	/* It seems that xd is no longer supported, and we should use
98.   	   a linefeed instead; unfortunately this requires resetting
99.   	   CRMOD, and many output routines will have to be modified
100.  	   slightly. Let's leave that till the next release. */
101.  	XD = tgetstr("xd", &tbufptr);
102.  /* not: 		XD = tgetstr("do", &tbufptr); */
103.  	if(!(CM = tgetstr("cm", &tbufptr))) {
104.  		if(!UP && !HO)
105.  			error("Hack needs CM or UP or HO.");
106.  		printf("Playing hack on terminals without cm is suspect...\n");
107.  		getret();
108.  	}
109.  	SO = tgetstr("so", &tbufptr);
110.  	SE = tgetstr("se", &tbufptr);
111.  	SG = tgetnum("sg");	/* -1: not fnd; else # of spaces left by so */
112.  	if(!SO || !SE || (SG > 0)) SO = SE = 0;
113.  #ifdef SORTING
114.  	/* Get rid of padding numbers for HI and HE.  Hope they
115.  	 * aren't really needed!!!  HI and HE are ouputted to the
116.  	 * pager as a string - so how can you send it NULLS???
117.  	 *  -jsb
118.  	 */
119.  	    HI = (char *) alloc(strlen(SO));
120.  	    HE = (char *) alloc(strlen(SE));
121.  	    i = 0;
122.  	    while(isdigit(SO[i])) i++;
123.  	    strcpy(HI, &SO[i]);
124.  	    i = 0;
125.  	    while(isdigit(SE[i])) i++;
126.  	    strcpy(HE, &SE[i]);
127.  #endif
128.  	CD = tgetstr("cd", &tbufptr);
129.  	set_whole_screen();		/* uses LI and CD */
130.  	if(tbufptr-tbuf > sizeof(tbuf)) error("TERMCAP entry too big...\n");
131.  	free(tptr);
132.  #endif /* MSDOS /**/
133.  }
134.  
135.  start_screen()
136.  {
137.  	xputs(TI);
138.  	xputs(VS);
139.  #ifdef DGK
140.  	/* Select normal ASCII and line drawing character sets.
141.  	 */
142.  	if (flags.DECRainbow)
143.  		xputs("\033(B\033)0");
144.  #endif
145.  }
146.  
147.  end_screen()
148.  {
149.  	clear_screen();
150.  	xputs(VE);
151.  	xputs(TE);
152.  }
153.  
154.  /* Cursor movements */
155.  extern xchar curx, cury;
156.  
157.  curs(x, y)
158.  register int x, y;	/* not xchar: perhaps xchar is unsigned and
159.  			   curx-x would be unsigned as well */
160.  {
161.  
162.  	if (y == cury && x == curx)
163.  		return;
164.  	if(!ND && (curx != x || x <= 3)) {	/* Extremely primitive */
165.  		cmov(x, y);			/* bunker!wtm */
166.  		return;
167.  	}
168.  	if(abs(cury-y) <= 3 && abs(curx-x) <= 3)
169.  		nocmov(x, y);
170.  	else if((x <= 3 && abs(cury-y)<= 3) || (!CM && x<abs(curx-x))) {
171.  		(void) putchar('\r');
172.  		curx = 1;
173.  		nocmov(x, y);
174.  	} else if(!CM) {
175.  		nocmov(x, y);
176.  	} else
177.  		cmov(x, y);
178.  }
179.  
180.  nocmov(x, y)
181.  {
182.  	if (cury > y) {
183.  		if(UP) {
184.  			while (cury > y) {	/* Go up. */
185.  				xputs(UP);
186.  				cury--;
187.  			}
188.  		} else if(CM) {
189.  			cmov(x, y);
190.  		} else if(HO) {
191.  			home();
192.  			curs(x, y);
193.  		} /* else impossible("..."); */
194.  	} else if (cury < y) {
195.  		if(XD) {
196.  			while(cury < y) {
197.  				xputs(XD);
198.  				cury++;
199.  			}
200.  		} else if(CM) {
201.  			cmov(x, y);
202.  		} else {
203.  			while(cury < y) {
204.  				xputc('\n');
205.  				curx = 1;
206.  				cury++;
207.  			}
208.  		}
209.  	}
210.  	if (curx < x) {		/* Go to the right. */
211.  		if(!ND) cmov(x, y); else	/* bah */
212.  			/* should instead print what is there already */
213.  		while (curx < x) {
214.  			xputs(ND);
215.  			curx++;
216.  		}
217.  	} else if (curx > x) {
218.  		while (curx > x) {	/* Go to the left. */
219.  			xputs(BC);
220.  			curx--;
221.  		}
222.  	}
223.  }
224.  
225.  cmov(x, y)
226.  register x, y;
227.  {
228.  	xputs(tgoto(CM, x-1, y-1));
229.  	cury = y;
230.  	curx = x;
231.  }
232.  
233.  xputc(c) char c; {
234.  	(void) fputc(c, stdout);
235.  }
236.  
237.  xputs(s) char *s; {
238.  #ifdef MSDOS
239.  	fputs(s, stdout);
240.  #else
241.  	tputs(s, 1, xputc);
242.  #endif
243.  }
244.  
245.  cl_end() {
246.  	if(CE)
247.  		xputs(CE);
248.  	else {	/* no-CE fix - free after Harold Rynes */
249.  		/* this looks terrible, especially on a slow terminal
250.  		   but is better than nothing */
251.  		register cx = curx, cy = cury;
252.  
253.  		while(curx < COLNO) {
254.  			xputc(' ');
255.  			curx++;
256.  		}
257.  		curs(cx, cy);
258.  	}
259.  }
260.  
261.  clear_screen() {
262.  	xputs(CL);
263.  	xputs(HO);
264.  	curx = cury = 1;
265.  }
266.  
267.  home()
268.  {
269.  	if(HO)
270.  		xputs(HO);
271.  	else if(CM)
272.  		xputs(tgoto(CM, 0, 0));
273.  	else
274.  		curs(1, 1);	/* using UP ... */
275.  	curx = cury = 1;
276.  }
277.  
278.  standoutbeg()
279.  {
280.  	if(SO) xputs(SO);
281.  }
282.  
283.  standoutend()
284.  {
285.  	if(SE) xputs(SE);
286.  }
287.  
288.  backsp()
289.  {
290.  	xputs(BC);
291.  	curx--;
292.  }
293.  
294.  bell()
295.  {
296.  #ifdef DGKMOD
297.  	if (flags.silent) return;
298.  #endif /* DGKMOD /**/
299.  	(void) putchar('\007');		/* curx does not change */
300.  	(void) fflush(stdout);
301.  }
302.  
303.  static short tmspc10[] = {		/* from termcap */
304.  	0, 2000, 1333, 909, 743, 666, 500, 333, 166, 83, 55, 41, 20, 10, 5
305.  };
306.  
307.  delay_output() {
308.  	/* delay 50 ms - could also use a 'nap'-system call */
309.  	/* BUG: if the padding character is visible, as it is on the 5620
310.  	   then this looks terrible. */
311.  #ifdef MSDOS
312.  	/* simulate the delay with "cursor here" */
313.  	register i;
314.  	for (i = 0; i < 3; i++) {
315.  		cmov(curx, cury);
316.  		(void) fflush(stdout);
317.  	}
318.  #else
319.  	if(!flags.nonull)
320.  #ifdef TERMINFO
321.  		tputs("$<50>", 1, xputs);
322.  #else
323.  		tputs("50", 1, xputs);
324.  #endif
325.  		/* cbosgd!cbcephus!pds for SYS V R2 */
326.  		/* is this terminfo, or what? */
327.  		/* tputs("$<50>", 1, xputc); */
328.  
329.  	else if(ospeed > 0 || ospeed < SIZE(tmspc10)) if(CM) {
330.  		/* delay by sending cm(here) an appropriate number of times */
331.  		register int cmlen = strlen(tgoto(CM, curx-1, cury-1));
332.  		register int i = 500 + tmspc10[ospeed]/2;
333.  
334.  		while(i > 0) {
335.  			cmov(curx, cury);
336.  			i -= cmlen*tmspc10[ospeed];
337.  		}
338.  	}
339.  #endif /* MSDOS /**/
340.  }
341.  
342.  cl_eos()			/* free after Robert Viduya */
343.  {				/* must only be called with curx = 1 */
344.  
345.  	if(CD)
346.  		xputs(CD);
347.  	else {
348.  		register int cx = curx, cy = cury;
349.  		while(cury <= LI-2) {
350.  			cl_end();
351.  			xputc('\n');
352.  			curx = 1;
353.  			cury++;
354.  		}
355.  		cl_end();
356.  		curs(cx, cy);
357.  	}
358.  }

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