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- /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
- /* termcap.c - version 1.0.3 */
-
- #include <stdio.h>
- #include "config.h" /* for ROWNO and COLNO */
- #include "flag.h" /* for flags.nonull */
- #ifndef MSDOS
- #define MSDOS
- #endif
- extern char *tgetstr(), *tgoto(), *getenv();
- extern long *alloc();
-
- #ifndef lint
- extern /* it is defined in libtermlib (libtermcap) */
- #endif lint
- short ospeed; /* terminal baudrate; used by tputs */
- static char tbuf[512];
- #ifdef DGK
- char *HO, *CL, *CE, *UP, *CM, *ND, *XD, *BC, *SO, *SE, *TI, *TE, *HI, *HE;
- #else
- static char *HO, *CL, *CE, *UP, *CM, *ND, *XD, *BC, *SO, *SE, *TI, *TE;
- #endif DGK
- 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 */
-
- #ifdef MSDOS
- static char tgotobuf[20];
- #define tgoto(fmt, x, y) (sprintf(tgotobuf, fmt, y+' ', x+' '), tgotobuf)
- #endif MSDOS
-
- startup()
- {
- #ifdef MSDOS
- HO = "\033H";
- CL = "\033E"; /* the ANSI termcap */
- CE = "\033K";
- UP = "\033A";
- CM = "\033Y%c%c"; /* used with function tgoto() */
- ND = "\033C";
- XD = "\033B";
- BC = "\033D";
- SO = "\033p";
- SE = "\033q";
- TI = "";
- TE = "";
- VS = "";
- VE = "";
- #ifdef DGK
- /* Both HI and HE have 4 characters. The function let_to_name()
- * in msdos.c uses this length when creating a buffer. If you
- * make HI and HE longer, you must also change the length of buf[]
- * in let_to_name()
- */
- HI = "\033p";
- HE = "\033q";
- #endif DGK
- CD = "\033";
- CO = COLNO;
- LI = ROWNO;
- #else
- register char *term;
- register 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("bc", &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);
- #endif MSDOS
- }
-
- start_screen()
- {
- xputs(TI);
- xputs(VS);
- }
-
- end_screen()
- {
- xputs(VE);
- xputs(TE);
- }
-
- /* Cursor movements */
- extern xchar curx, cury;
-
- curs(x, y)
- register int x, y; /* not xchar: perhaps xchar is unsigned and
- curx-x would be unsigned as well */
- {
-
- 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);
- }
-
- nocmov(x, 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--;
- }
- }
- }
-
- cmov(x, y)
- register x, y;
- {
- xputs(tgoto(CM, x-1, y-1));
- cury = y;
- curx = x;
- }
-
- xputc(c) char c; {
- (void) fputc(c, stdout);
- }
-
- xputs(s) char *s; {
- #ifdef MSDOS
- fputs(s, stdout);
- #else
- tputs(s, 1, xputc);
- #endif
- }
-
- cl_end() {
- 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 */
- register cx = curx, cy = cury;
-
- while(curx < COLNO) {
- xputc(' ');
- curx++;
- }
- curs(cx, cy);
- }
- }
-
- clear_screen() {
- xputs(CL);
- curx = cury = 1;
- }
-
- home()
- {
- if(HO)
- xputs(HO);
- else if(CM)
- xputs(tgoto(CM, 0, 0));
- else
- curs(1, 1); /* using UP ... */
- curx = cury = 1;
- }
-
- standoutbeg()
- {
- if(SO) xputs(SO);
- }
-
- standoutend()
- {
- if(SE) xputs(SE);
- }
-
- backsp()
- {
- xputs(BC);
- curx--;
- }
-
- bell()
- {
- #ifdef DGK
- if (flags.silent) return;
- #endif DGK
- (void) putchar('\007'); /* curx does not change */
- (void) fflush(stdout);
- }
-
- static short tmspc10[] = { /* from termcap */
- 0, 2000, 1333, 909, 743, 666, 500, 333, 166, 83, 55, 41, 20, 10, 5
- };
-
- delay_output() {
- /* delay 50 ms - could also use a 'nap'-system call */
- /* BUG: if the padding character is visible, as it is on the 5620
- then this looks terrible. */
- #ifdef MSDOS
- /* simulate the delay with "cursor here" 5 times*/
- register i;
- for (i = 0; i < 5; i++)
- cmov(curx, cury);
- #else
- if(!flags.nonull)
- tputs("50", 1, xputc);
-
- /* cbosgd!cbcephus!pds for SYS V R2 */
- /* is this terminfo, or what? */
- /* tputs("$<50>", 1, xputc); */
-
- else if(ospeed > 0 || ospeed < SIZE(tmspc10)) if(CM) {
- /* delay by sending cm(here) an appropriate number of times */
- register int cmlen = strlen(tgoto(CM, curx-1, cury-1));
- register int i = 500 + tmspc10[ospeed]/2;
-
- while(i > 0) {
- cmov(curx, cury);
- i -= cmlen*tmspc10[ospeed];
- }
- }
- #endif MSDOS
- }
-
- cl_eos() /* free after Robert Viduya */
- { /* must only be called with curx = 1 */
-
- if(CD)
- xputs(CD);
- else {
- register int cx = curx, cy = cury;
- while(cury <= LI-2) {
- cl_end();
- xputc('\n');
- curx = 1;
- cury++;
- }
- cl_end();
- curs(cx, cy);
- }
- }
-