108 lines
1.6 KiB
C++
108 lines
1.6 KiB
C++
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/*
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* The routines in this file
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* provide support for ANSI style terminals
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* over a serial line. The serial I/O services are
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* provided by routines in "termio.c". It compiles
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* into nothing if not an ANSI device.
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*/
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#include <stdio.h>
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#include "ed.h"
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#if ANSI
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#define NROW 24 /* Screen size. */
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#define NCOL 80 /* Edit if you want to. */
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#define BEL 0x07 /* BEL character. */
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#define ESC 0x1B /* ESC character. */
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extern int ttopen(); /* Forward references. */
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extern int ttgetc();
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extern int ttputc();
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extern int ttflush();
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extern int ttclose();
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extern int ansimove();
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extern int ansieeol();
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extern int ansieeop();
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extern int ansibeep();
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extern int ansiopen();
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/*
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* Standard terminal interface
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* dispatch table. Most of the fields
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* point into "termio" code.
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*/
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TERM term = {
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NROW-1,
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NCOL,
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&ansiopen,
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&ttclose,
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&ttgetc,
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&ttputc,
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&ttflush,
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&ansimove,
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&ansieeol,
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&ansieeop,
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&ansibeep
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};
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ansimove(row, col)
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{
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ttputc(ESC);
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ttputc('[');
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ansiparm(row+1);
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ttputc(';');
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ansiparm(col+1);
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ttputc('H');
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}
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ansieeol()
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{
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ttputc(ESC);
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ttputc('[');
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ttputc('K');
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}
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ansieeop()
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{
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ttputc(ESC);
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ttputc('[');
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ttputc('J');
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}
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ansibeep()
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{
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ttputc(BEL);
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ttflush();
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}
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ansiparm(n)
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register int n;
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{
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register int q;
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q = n/10;
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if (q != 0)
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ansiparm(q);
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ttputc((n%10) + '0');
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}
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#endif
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ansiopen()
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{
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#if V7
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register char *cp;
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char *getenv();
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if ((cp = getenv("TERM")) == NULL) {
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puts("Shell variable TERM not defined!");
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exit(1);
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}
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if (strcmp(cp, "vt100") != 0) {
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puts("Terminal type not 'vt100'!");
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exit(1);
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}
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#endif
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ttopen();
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}
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