Source:NetHack 1.4f/termcap.c

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.

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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.  }