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242 lines
3.7 KiB
C
242 lines
3.7 KiB
C
/* ANSI.C
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*
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* The routines in this file provide support for ANSI style terminals
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* over a serial line. The serial I/O services are provided by routines in
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* "termio.c". It compiles into nothing if not an ANSI device.
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*
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* modified by Petri Kutvonen
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*/
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#define termdef 1 /* don't define "term" external */
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#include <stdio.h>
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#include "estruct.h"
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#if ANSI
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#define NROW 25 /* Screen size. */
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#define NCOL 80 /* Edit if you want to. */
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#if PKCODE
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#define MROW 64
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#endif
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#define NPAUSE 100 /* # times thru update to pause */
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#define MARGIN 8 /* size of minimim margin and */
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#define SCRSIZ 64 /* scroll size for extended lines */
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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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extern int ansirev();
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extern int ansiclose();
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extern int ansikopen();
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extern int ansikclose();
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extern int ansicres();
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#if COLOR
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extern int ansifcol();
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extern int ansibcol();
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int cfcolor = -1; /* current forground color */
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int cbcolor = -1; /* current background color */
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#endif
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/*
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* Standard terminal interface dispatch table. Most of the fields point into
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* "termio" code.
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*/
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struct terminal term = {
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#if PKCODE
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MROW - 1,
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#else
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NROW - 1,
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#endif
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NROW - 1,
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NCOL,
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NCOL,
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MARGIN,
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SCRSIZ,
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NPAUSE,
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ansiopen,
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ansiclose,
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ansikopen,
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ansikclose,
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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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ansirev,
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ansicres
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#if COLOR
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, ansifcol,
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ansibcol
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#endif
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#if SCROLLCODE
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, NULL
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#endif
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};
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#if COLOR
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ansifcol(color)
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/* set the current output color */
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int color; /* color to set */
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{
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if (color == cfcolor)
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return;
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ttputc(ESC);
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ttputc('[');
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ansiparm(color + 30);
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ttputc('m');
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cfcolor = color;
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}
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/* Set the current background color.
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* color: color to set.
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*/
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void ansibcol(int color)
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{
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if (color == cbcolor)
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return;
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ttputc(ESC);
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ttputc('[');
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ansiparm(color + 40);
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ttputc('m');
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cbcolor = color;
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}
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#endif
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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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void ansieeol(void)
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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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void ansieeop(void)
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{
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#if COLOR
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ansifcol(gfcolor);
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ansibcol(gbcolor);
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#endif
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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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/* Change reverse video state.
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* state: TRUE = reverse, FALSE = normal
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*/
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void ansirev(int state)
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{
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#if COLOR
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int ftmp, btmp; /* temporaries for colors */
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#endif
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ttputc(ESC);
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ttputc('[');
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ttputc(state ? '7' : '0');
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ttputc('m');
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#if COLOR
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if (state == FALSE) {
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ftmp = cfcolor;
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btmp = cbcolor;
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cfcolor = -1;
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cbcolor = -1;
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ansifcol(ftmp);
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ansibcol(btmp);
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}
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#endif
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}
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/* Change screen resolution. */
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int ansicres()
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{
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return TRUE;
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}
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void ansibeep(void)
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{
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ttputc(BEL);
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ttflush();
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}
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void ansiparm(int n)
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{
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int q, r;
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q = n / 10;
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if (q != 0) {
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r = q / 10;
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if (r != 0) {
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ttputc((r % 10) + '0');
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}
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ttputc((q % 10) + '0');
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}
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ttputc((n % 10) + '0');
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}
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void ansiopen(void)
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{
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#if V7 | USG | BSD
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char *cp;
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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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strcpy(sres, "NORMAL");
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revexist = TRUE;
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ttopen();
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}
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void ansiclose(void)
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{
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#if COLOR
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ansifcol(7);
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ansibcol(0);
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#endif
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ttclose();
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}
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/* Open the keyboard (a noop here). */
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void ansikopen(void)
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{
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}
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/* Close the keyboard (a noop here). */
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void ansikclose(void)
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{
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}
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#endif
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