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- /*
- ** term.c
- **
- ** provide terminal functions for se
- **
- ** If HARD_TERMS is *not* defined, which is the default, se will
- ** use the termlib library, which provides terminal independant operations.
- ** This makes se both smaller, and more flexible.
- **
- ** If HARD_TERMS is defined, then se will use the original code, which
- ** had terminal types hard-wired into the code. This would be useful for
- ** a system which does not have the termlib library.
- **
- ** On System V systems, we have two possibilities. Release 1 did not have
- ** the terminfo package, so we assume that if it is Release 1, someone will
- ** have ported the BSD termlib library. If it is Release 2, then the new
- ** terminfo package is there, and we wil use it.
- */
-
- #include "se.h"
- #include "extern.h"
-
- #ifndef HARD_TERMS
-
- int outc (); /* defined later */
-
- #if defined (BSD) || !defined (S5R2)
- /*
- * code for using BSD termlib -- getting capabilities, and writing them out.
- */
-
- /* capabilities from termcap */
-
- static int AM; /* automatic margins, i.e. wraps at column 80 */
-
- static char *VS; /* visual start -- e.g. clear status line */
- static char *VE; /* visual end -- e.g. restore status line */
- static char *TI; /* terminal init -- whatever needed for screen ops */
- static char *TE; /* terminal ops end */
- static char *CM; /* cursor motion, used by tgoto() */
- static char *CE; /* clear to end of line */
- static char *DL; /* hardware delete line */
- static char *AL; /* hardware add (insert) line */
- static char *CL; /* clear screen */
-
- extern char PC; /* Pad character, usually '\0' */
-
- static char *pcstr;
- extern char *tgoto (), *tgetstr (); /* termlib routines */
-
- static char caps[128]; /* space for decoded capability strings */
- static char *addr_caps; /* address of caps for relocation */
-
- #define TERMBUFSIZ 1024+1
- static char termbuf[TERMBUFSIZ];
-
-
-
- /* setterm -- initialize terminal parameters and actual capabilities */
-
- static setterm (type)
- char *type;
- {
- if (type[0] == EOS)
- {
- ttynormal ();
- fprintf (stderr, "in setterm: can't happen.\n");
- exit (1);
- }
-
- Ncols = Nrows = 0;
-
- /*
- * we used to set certain mininum and maximum screen sizes,
- * but since we could end up on things like ATT 5620s, with big
- * screens, we just do it dynamically, but add some error
- * checking, and exit if can't do it.
- */
- Nrows = tgetnum ("li");
- Ncols = tgetnum ("co");
-
- if (Nrows == -1)
- {
- ttynormal ();
- fprintf (stderr, "se: could not determine number of rows\n");
- exit (1);
- }
-
- if (Ncols == -1)
- {
- ttynormal ();
- fprintf (stderr, "se: could not determine number of columns\n");
- exit (1);
- }
-
-
- addr_caps = caps;
-
- getdescrip (); /* get terminal description */
-
- if (*tgoto (CM, 0, 0) == 'O') /* OOPS returned.. */
- CM = 0;
-
- PC = pcstr ? pcstr[0] : EOS;
-
- if (CM == 0)
- {
- ttynormal ();
- fprintf (stderr, "se: terminal does not have cursor motion.\n");
- exit (2);
- }
-
- return OK;
- }
-
- /* getdescrip --- get descriptions out of termcap entry */
-
- static getdescrip ()
- {
- int i;
- static struct _table {
- char *name;
- char **ptr_to_cap;
- } table[] = {
- "vs", & VS,
- "ve", & VE,
- "ti", & TI,
- "te", & TE,
- "cm", & CM,
- "ce", & CE,
- "dl", & DL,
- "al", & AL,
- "cl", & CL,
- "pc", & pcstr,
- NULL, NULL
- };
-
- AM = tgetflag ("am"); /* only boolean se needs */
-
- /* get string values */
-
- for (i = 0; table[i].name != NULL; i++)
- *(table[i].ptr_to_cap) = tgetstr (table[i].name, & addr_caps);
- }
-
-
- /* setcaps -- get the capabilities from termcap file into termbuf */
-
- setcaps (term)
- char *term;
- {
- switch (tgetent (termbuf, term)) {
- case -1:
- ttynormal ();
- fprintf (stderr, "se: couldn't open termcap file.\n");
- return (ERR);
-
- case 0:
- ttynormal ();
- fprintf (stderr, "se: no termcap entry for %s terminals.\n", term);
- return (ERR);
-
- case 1:
- break;
-
- default:
- error ("in setcaps: can't happen.\n");
- }
-
- return (OK);
- }
-
- #else
-
- /* use the new terminfo package */
- /*
- * Do NOT include <curses.h>, since it redefines
- * USG, ERR, and OK, to values inconsisten with what
- * we use.
- */
-
- /* fix a problem in /usr/include/term.h */
- #include <termio.h>
- typedef struct termio SGTTY;
-
- #include <term.h> /* should be all we really need */
-
- #define AM auto_right_margin
- #define TI enter_ca_mode
- #define TE exit_ca_mode
- #define VS cursor_visible
- #define VE cursor_normal
- #define CL clear_screen
- #define CE clr_eol
- #define DL delete_line
- #define AL insert_line
-
- /* setcaps --- called from main() to get capabilities */
-
- setcaps (term)
- char *term;
- {
- int ret = 0;
-
- setupterm (term, 1, & ret);
- if (ret != 1)
- return (ERR);
- Nrows = lines;
- Ncols = columns;
- return (OK);
- }
-
- #endif
-
- /* outc -- write a character to the terminal */
-
- int outc (c)
- char c;
- {
- twrite (1, &c, 1);
- }
-
- /* t_init -- put out terminal initialization string */
-
- t_init ()
- {
- if (VS)
- tputs (VS, 1, outc);
- if (TI)
- tputs (TI, 1, outc); /* terminal initializations */
- }
-
- /* t_exit -- put out strings to turn off whatever modes we had turned on */
-
- t_exit ()
- {
- /* terminal exiting strings */
- if (TE)
- tputs (TE, 1, outc);
- if (VE)
- tputs (VE, 1, outc);
- tflush (); /* force it out */
- }
- #endif
-
- /* send --- send a printable character, predict cursor position */
-
- send (chr)
- char chr;
- {
- if (Currow == Nrows - 1 && Curcol == Ncols - 1)
- return; /* anything in corner causes scroll... */
-
- #ifndef HARD_TERMS
- outc (chr);
- #else
- twrite (1, &chr, 1);
- #endif
-
- if (Curcol == Ncols - 1)
- {
- #ifndef HARD_TERMS
- if (AM) /* terminal wraps when hits last column */
- #else
- if (Term_type != TVT && Term_type != NETRON
- && Term_type != ESPRIT && Term_type != VI300)
- #endif
- {
- Curcol = 0;
- Currow++;
- }
- }
- else /* cursor not at extreme right */
- Curcol++;
- }
-
- /* terminal handling functions used throughout the editor */
-
- /* clrscreen --- clear entire screen */
-
- clrscreen ()
- {
- Curcol = Currow = 0;
- /* clearing screen homes cursor to upper left corner */
- /* on all terminals */
-
- #ifndef HARD_TERMS
- tputs (CL, 1, outc);
- #else
- switch (Term_type) {
- case ADDS980:
- case ADDS100:
- case GT40:
- case CG:
- case ISC8001:
- case ANP:
- case NETRON:
- twrite (1, "\014", 1);
- break;
- case FOX:
- twrite (1, "\033K", 2); /* clear display and all tabs */
- break;
- case TVT:
- twrite (1, "\014\017", 2); /* home, erase to end of screen */
- break;
- case BEE150:
- case BEE200:
- case SBEE:
- case SOL:
- case H19:
- twrite (1, "\033E", 2);
- break;
- case HAZ1510:
- case ESPRIT:
- twrite (1, "\033\034", 2);
- break;
- case ADM3A:
- case VC4404:
- case TVI950:
- twrite (1, "\032", 1);
- break;
- case TS1:
- twrite (1, "\033*", 2);
- break;
- case ADM31:
- twrite (1, "\033+", 2);
- break;
- case IBM:
- twrite (1, "\033L", 2);
- break;
- case HP21:
- twrite (1, "\033H\033J", 4); /* home cursor, erase to end of screen */
- break;
- case TRS80:
- twrite (1, "\034\037", 2);
- break;
- case VI200:
- twrite (1, "\033v", 2);
- break;
- case VI300:
- twrite (1, "\033[H\033[J", 6);
- /* home cursor, clear screen */
- break;
- case VI50:
- twrite (1, "\033v", 2);
- senddelay (30);
- break;
- }
-
- senddelay (20);
- #endif
- }
-
-
- /* position_cursor --- position terminal's cursor to (row, col) */
-
- position_cursor (row, col)
- int row, col;
- {
- if (row < Nrows && row >= 0 /* within vertical range? */
- && col < Ncols && col >= 0 /* within horizontal range? */
- && (row != Currow || col != Curcol))/* not already there? */
- #ifndef HARD_TERMS
- {
- if (row == Currow && abs (Curcol - col) <= 4)
- {
- /* short motion in current line */
- if (Curcol < col)
- for (; Curcol != col; Curcol++)
- twrite (1, &Screen_image[Currow][Curcol], 1);
- else
- for (; Curcol != col; Curcol--)
- twrite (1, "\b", 1);
- }
- else
- {
- #if defined (USG) && defined(S5R2)
- tputs (tparm (cursor_address, row, col), 1, outc);
- #else
- tputs (tgoto (CM, col, row), 1, outc);
- #endif
- Currow = row;
- Curcol = col;
- }
- }
- #else
- switch (Term_type) {
- case ADDS980:
- addspos (row, col);
- break;
- case ADDS100:
- regentpos (row, col);
- break;
- case HP21:
- hp21pos (row, col);
- break;
- case FOX:
- pepos (row, col);
- break;
- case TVT:
- tvtpos (row, col);
- break;
- case GT40:
- gt40pos (row, col);
- break;
- case BEE150:
- case BEE200:
- case SBEE:
- case SOL:
- beepos (row, col);
- break;
- case VC4404:
- vcpos (row, col);
- break;
- case HAZ1510:
- hazpos (row, col);
- break;
- case ESPRIT:
- espritpos (row, col);
- break;
- case CG:
- cgpos (row, col);
- break;
- case ISC8001:
- iscpos (row, col);
- break;
- case ADM3A:
- case ADM31:
- case TS1:
- case TVI950:
- admpos (row, col);
- break;
- case IBM:
- ibmpos (row, col);
- break;
- case ANP:
- anppos (row, col);
- break;
- case NETRON:
- netpos (row, col);
- break;
- case H19:
- h19pos (row, col);
- break;
- case TRS80:
- trspos (row, col);
- break;
- case VI200:
- case VI50:
- vipos (row, col);
- break;
- case VI300:
- ansipos (row, col);
- break;
- }
- #endif
- }
-
-
- /* setscreen --- initialize screen and associated descriptive variables */
-
- setscreen ()
- {
- register int row, col;
-
- #ifndef HARD_TERMS
- char *getenv ();
-
- #if defined (BSD) || !defined (S5R2)
- setterm (getenv ("TERM"));
- #endif
-
- t_init (); /* put out the 'ti' and 'vs' capabilities */
- #else
- switch (Term_type) {
- case ADDS980:
- case FOX:
- case HAZ1510:
- case ADDS100:
- case BEE150:
- case ADM3A:
- case IBM:
- case HP21:
- case H19:
- case ADM31:
- case VI200:
- case VC4404:
- case ESPRIT:
- case TS1:
- case TVI950:
- case VI50:
- case VI300:
- Nrows = 24;
- Ncols = 80;
- break;
- case ANP:
- Nrows = 24;
- Ncols = 96;
- break;
- case SOL:
- case NETRON:
- case TRS80:
- Nrows = 16;
- Ncols = 64;
- break;
- case TVT:
- Nrows = 16;
- Ncols = 63;
- break;
- case GT40:
- Nrows = 32;
- Ncols = 73;
- break;
- case CG:
- Nrows = 51;
- Ncols = 85;
- break;
- case ISC8001:
- Nrows = 48;
- Ncols = 80;
- break;
- case BEE200:
- case SBEE:
- Nrows = 25;
- Ncols = 80;
- break;
- }
- #endif
- clrscreen (); /* clear physical screen, set cursor position */
-
- Toprow = 0;
- Botrow = Nrows - 3; /* 1 for 0-origin, 1 for status, 1 for cmd */
- Cmdrow = Botrow + 1;
- Topln = 1;
- Sclen = -1; /* make sure we assume nothing on the screen */
-
- for (row = 0; row < Nrows; row++) /* now clear virtual screen */
- for (col = 0; col < Ncols; col++)
- Screen_image[row][col] = ' ';
-
- for (col = 0; col < Ncols; col++) /* and clear out status line */
- Msgalloc[col] = NOMSG;
-
- Insert_mode = NO;
- }
-
-
- /* inslines --- insert 'n' lines on the screen at 'row' */
-
- inslines (row, n)
- int row, n;
- {
- register int i;
- int delay;
-
- position_cursor (row, 0);
- #ifdef HARD_TERMS
- if (Term_type == VI300)
- {
- char pseq[10];
- register int pp = 0;
- pseq[pp++] = '\033';
- pseq[pp++] = '[';
- if (n >= 10)
- pseq[pp++] = '0' + n / 10;
- pseq[pp++] = '0' + n % 10;
- pseq[pp++] = 'L';
- twrite (1, pseq, pp);
- delay = 0;
- }
- else
- #endif
- for (i = 0; i < n; i++)
- {
- #ifndef HARD_TERMS
- tputs (AL, n, outc);
- tflush ();
- #else
- switch (Term_type) {
- case VI200:
- twrite (1, "\033L", 2);
- delay = 0;
- break;
- case VI50:
- case H19:
- twrite (1, "\033L", 2);
- delay = 32;
- break;
- case ESPRIT:
- twrite (1, "\033\032", 2);
- delay = 32;
- break;
- case TS1:
- case TVI950:
- twrite (1, "\033E", 2);
- delay = 0;
- break;
- case ADDS100:
- twrite (1, "\033M", 2);
- delay = 96;
- break;
- default:
- error ("in inslines: shouldn't happen");
- }
-
- if (delay != 0)
- senddelay (delay);
- #endif
- }
-
- for (i = Nrows - 1; i - n >= Currow; i--)
- move_ (Screen_image[i - n], Screen_image[i], Ncols);
-
- for (; i >= Currow; i--)
- move_ (Blanks, Screen_image[i], Ncols);
- }
-
-
- /* dellines --- delete 'n' lines beginning at 'row' */
-
- dellines (row, n)
- int row, n;
- {
- register int i;
- int delay;
-
- position_cursor (row, 0);
- #ifdef HARD_TERMS
- if (Term_type == VI300)
- {
- char pseq[10];
- register int pp = 0;
- pseq[pp++] = '\033';
- pseq[pp++] = '[';
- if (n >= 10)
- pseq[pp++] = '0' + n / 10;
- pseq[pp++] = '0' + n % 10;
- pseq[pp++] = 'M';
- twrite (1, pseq, pp);
- delay = 0;
- }
- else
- #endif
- for (i = 0; i < n; i++)
- {
- #ifndef HARD_TERMS
- tputs (DL, n, outc);
- tflush ();
- #else
- switch (Term_type) {
- case VI200:
- twrite (1, "\033M", 2);
- delay = 0;
- break;
- case VI50:
- twrite (1, "\033M", 2);
- delay = 32;
- break;
- case H19:
- twrite (1, "\033M", 2);
- delay = 32;
- break;
- case TS1:
- case TVI950:
- twrite (1, "\033R", 2);
- delay = 0;
- break;
- case ESPRIT:
- twrite (1, "\033\023", 2);
- delay = 32;
- break;
- case ADDS100:
- twrite (1, "\033l", 2);
- delay = 96;
- break;
- default:
- error ("in dellines: shouldn't happen");
- }
-
- if (delay != 0)
- senddelay (delay);
- #endif
- }
-
- for (i = Currow; i + n < Nrows; i++)
- move_ (Screen_image[i + n], Screen_image[i], Ncols);
-
- for (; i < Nrows; i++)
- move_ (Blanks, Screen_image[i], Ncols);
- }
-
-
- /* hwinsdel --- return 1 if the terminal has hardware insert/delete */
-
- int hwinsdel ()
- {
- if (No_hardware == YES)
- return (NO);
-
- #ifndef HARD_TERMS
- return (AL != NULL && DL != NULL);
- #else
- switch (Term_type) {
- case VI300:
- case VI200:
- case VI50:
- case ESPRIT:
- case H19:
- case TS1:
- case TVI950:
- case ADDS100:
- return 1;
- }
- return 0;
- #endif
- }
-
-
- /* clear_to_eol --- clear screen to end-of-line */
-
- clear_to_eol (row, col)
- int row, col;
- {
- register int c, flag;
- #ifdef HARD_TERMS
- register int hardware;
-
- switch (Term_type) {
- case BEE200:
- case BEE150:
- case FOX:
- case SBEE:
- case ADDS100:
- case HP21:
- case IBM:
- case ANP:
- case NETRON:
- case H19:
- case TS1:
- case TRS80:
- case ADM31:
- case VI200:
- case VI300:
- case VI50:
- case VC4404:
- case ESPRIT:
- case TVI950:
- hardware = YES;
- break;
- default:
- hardware = NO;
- if (Term_type == ADDS980 && row < Nrows - 1)
- hardware = YES;
- if (Term_type == TVT && row > 0)
- hardware = YES;
- }
- #endif
-
- flag = NO;
-
- for (c = col; c < Ncols; c++)
- if (Screen_image[row][c] != ' ')
- {
- Screen_image[row][c] = ' ';
- #ifndef HARD_TERMS
- if (CE != NULL) /* there is hardware */
- #else
- if (hardware == YES)
- #endif
- flag = YES;
- else
- {
- position_cursor (row, c);
- send (' ');
- }
- }
-
- if (flag == YES)
- {
- position_cursor (row, col);
- #ifndef HARD_TERMS
- tputs (CE, 1, outc);
- #else
- switch (Term_type) {
- case BEE200:
- case BEE150:
- case SBEE:
- case ADDS100:
- case HP21:
- case H19:
- case VC4404:
- case TS1:
- case TVI950:
- case VI50:
- twrite (1, "\033K", 2);
- break;
- case FOX:
- case IBM:
- twrite (1, "\033I", 2);
- break;
- case ADDS980:
- twrite (1, "\n", 1);
- Currow++;
- Curcol = 0;
- break;
- case ANP:
- twrite (1, "\033L", 2);
- break;
- case NETRON:
- twrite (1, "\005", 1);
- break;
- case TRS80:
- twrite (1, "\036", 1);
- break;
- case ADM31:
- twrite (1, "\033T", 2);
- break;
- case VI200:
- twrite (1, "\033x", 2);
- break;
- case VI300:
- twrite (1, "\033[K", 3);
- break;
- case ESPRIT:
- twrite (1, "\033\017", 2);
- break;
- case TVT:
- twrite (1, "\013\012", 2);
- break;
- } /* end switch */
- #endif
- } /* end if (flag == YES) */
- } /* end clear_to_eol */
-
-
- #ifdef HARD_TERMS
-
- /* begin terminal dependant routines */
-
- /* addspos --- position cursor to (row, col) on ADDS Consul 980 */
-
- static addspos (row, col)
- int row, col;
- {
- char coord;
- int ntabs, where;
-
- if (Currow != row || col < Curcol - 7)
- {
- twrite (1, "\013", 1); /* VT */
- coord = '@' + row;
- twrite (1, &coord, 1);
- Currow = row;
- Curcol = 0;
- }
-
- if (col > Curcol + 2)
- {
- ntabs = (col + 2) / 5; /* from beginning */
- where = ntabs * 5;
- ntabs -= Curcol / 5; /* from Curcol */
- if (ntabs + abs (where - col) <= 4)
- {
- for (; ntabs > 0; ntabs--)
- twrite (1, "\t", 1);
- Curcol = where;
- }
- }
-
- if (col > Curcol + 4)
- {
- where = col - Curcol;
- twrite (1, "\033\005", 2); /* ESC ENQ */
- coord = '0' + (where / 10);
- twrite (1, &coord, 1);
- coord = '0' + (where % 10);
- twrite (1, &coord, 1);
- Curcol = col;
- }
-
- while (Curcol < col)
- {
- twrite (1, &Screen_image[Currow][Curcol], 1);
- Curcol++;
- }
-
- while (Curcol > col)
- {
- twrite (1, "\b", 1);
- Curcol--;
- }
- }
-
- /* admpos --- position cursor to (row, col) on ADM-3A and ADM-31 terminals */
-
- static admpos (row, col)
- int row, col;
- {
- int dist;
- char coord;
-
- dist = col - Curcol;
- if (dist < 0)
- dist = -dist;
- if (row == Currow && dist < 4) /* 4 chars for abs. position */
- {
- while (Curcol < col)
- {
- twrite (1, &Screen_image[Currow][Curcol], 1);
- Curcol++;
- }
- while (Curcol > col)
- {
- twrite (1, "\b", 1);
- Curcol--;
- }
- }
- else
- {
- twrite (1, "\033=", 2);
- coord = row + ' ';
- twrite (1, &coord, 1);
- coord = col + ' ';
- twrite (1, &coord, 1);
- Currow = row;
- Curcol = col;
- }
- }
-
-
-
- /* ansipos --- position cursor on ANSI X something-or-other terminals */
-
- static ansipos (row, col)
- register int row, col;
- {
- register int dist;
-
- char absseq[20], relseq[50];
- int absp = 0;
- register int relp = 0;
- register int trow, tcol;
-
- /*** Build relative positioning string--handle row first ***/
- trow = Currow;
- tcol = Curcol;
- if (row >= trow && row <= trow + 3)
- for (; trow < row; trow++)
- relseq[relp++] = '\012';
- else if (row < trow && row >= trow - 1)
- for (; trow > row; trow--)
- {
- relseq[relp++] = '\033';
- relseq[relp++] = 'M';
- }
- else if (row >= trow)
- {
- relseq[relp++] = '\033';
- relseq[relp++] = '[';
- dist = row - trow;
- if (dist >= 10)
- relseq[relp++] = '0' + dist / 10;
- relseq[relp++] = '0' + dist % 10;
- relseq[relp++] = 'B';
- trow = row;
- }
- else /* row < trow */
- {
- relseq[relp++] = '\033';
- relseq[relp++] = '[';
- dist = trow - row;
- if (dist >= 10)
- relseq[relp++] = '0' + dist / 10;
- relseq[relp++] = '0' + dist % 10;
- relseq[relp++] = 'A';
- trow = row;
- }
-
- /*** Now do the column part of relative positioning ***/
- if (col >= tcol - 2 && col <= tcol + 2)
- ; /* skip coarse positioning -- just do the fine stuff */
- else
- {
- if (col <= 4)
- {
- relseq[relp++] = '\015';
- tcol = 0;
- }
- dist = col - tcol;
- if (col < 72 && dist > 2
- && dist < 8 && (col + 1) % 8 <= 2)
- {
- relseq[relp++] = '\t';
- tcol = ((tcol + 8) / 8) * 8;
- }
- }
- dist = col - tcol;
- if (dist < 0)
- dist = -dist;
- if (dist == 0)
- ;
- else if (dist < 4) /* 4 chars for abs. position */
- {
- while (tcol < col)
- {
- relseq[relp++] = Screen_image[trow][tcol];
- tcol++;
- }
- while (tcol > col)
- {
- relseq[relp++] = '\b';
- tcol--;
- }
- }
- else if (col >= tcol)
- {
- relseq[relp++] = '\033';
- relseq[relp++] = '[';
- if (dist >= 10)
- relseq[relp++] = '0' + dist / 10;
- relseq[relp++] = '0' + dist % 10;
- relseq[relp++] = 'C';
- tcol = col;
- }
- else /* if (col < tcol) */
- {
- relseq[relp++] = '\033';
- relseq[relp++] = '[';
- if (dist >= 10)
- relseq[relp++] = '0' + dist / 10;
- relseq[relp++] = '0' + dist % 10;
- relseq[relp++] = 'D';
- tcol = col;
- }
-
- /*** If relative positioning will do it, forget absolute ***/
- if (relp <= 5)
- twrite (1, relseq, relp);
- else
- {
- absseq[absp++] = '\033';
- absseq[absp++] = '[';
- if (row >= 9)
- absseq[absp++] = '0' + (row + 1) / 10;
- absseq[absp++] = '0' + (row + 1) % 10;
- absseq[absp++] = ';';
- if (col >= 9)
- absseq[absp++] = '0' + (col + 1) / 10;
- absseq[absp++] = '0' + (col + 1) % 10;
- absseq[absp++] = 'H';
- if (absp >= relp)
- twrite (1, relseq, relp);
- else
- twrite (1, absseq, absp);
- }
- Curcol = col;
- Currow = row;
- }
-
-
-
- /* anppos --- position cursor on Allen & Paul model 1 */
-
- static anppos (row, col)
- int row, col;
- {
- register char coord;
-
- if (row == Currow) /* if close, just sneak right or left */
- {
- if (col == Curcol + 1)
- twrite (1, "\t", 1);
- else if (col == Curcol + 2)
- twrite (1, "\t\t", 2);
- else if (col == Curcol - 1)
- twrite (1, "\b", 1);
- else if (col == Curcol - 2)
- twrite (1, "\b\b", 2);
- else
- {
- twrite (1, "\033C", 2);
- coord = col + ' ';
- twrite (1, &coord, 1);
- }
- }
-
- else if (col == Curcol) /* if close, sneak up or down */
- {
- if (row == Currow + 1)
- twrite (1, "\012", 1);
- else if (row == Currow + 2)
- twrite (1, "\012\012", 2);
- else if (row == Currow - 1)
- twrite (1, "\013", 1);
- else if (row == Currow - 2)
- twrite (1, "\013\013", 2);
- else
- {
- /* because of bug in anp software, abs row pos is not working.
- * the following code was replaced to compensate:
- *
- * twrite (1, "\033R", 2);
- * coord = row + ' ';
- * twrite (1, &coord, 1);
- */
- twrite (1, "\033P", 2);
- coord = row + ' ';
- twrite (1, &coord, 1);
- coord = col + ' ';
- twrite (1, &coord, 1);
- }
- }
- else /* resort to absolute positioning */
- {
- twrite (1, "\033P", 2);
- coord = row + ' ';
- twrite (1, &coord, 1);
- coord = col + ' ';
- twrite (1, &coord, 1);
- }
-
- Currow = row;
- Curcol = col;
- }
-
- /* b200coord --- transmit a coordinate for Beehive 200 cursor addressing */
-
- static b200coord (coord)
- int coord;
- {
- char acc;
- int tens, units;
-
- tens = coord / 10;
- units = coord - 10 * tens;
- acc = units + 16 * tens;
-
- twrite (1, & acc, 1);
- }
-
- /* beepos --- position cursor on Beehive terminal */
-
- static beepos (row, col)
- int row, col;
- {
- if (row == Currow + 1 && col == 0 && Term_type != SBEE)
- {
- twrite (1, "\r\n", 2); /* CR LF */
- Curcol = 0;
- Currow++;
- }
- else if (row == 0 && col == 0) /* home cursor */
- {
- twrite (1, "\033H", 2);
- Currow = Curcol = 0;
- }
- else if (row == Currow && col > Curcol && col <= Curcol + 4)
- while (Curcol != col)
- {
- twrite (1, &Screen_image[Currow][Curcol], 1);
- Curcol++;
- }
- else if (row == Currow && col < Curcol && col >= Curcol - 4)
- while (Curcol != col)
- {
- twrite (1, "\b", 1);
- Curcol--;
- }
- else /* resort to absolute addressing */
- {
- twrite (1, "\033F", 2);
- if (Term_type == BEE200 || Term_type == SOL)
- {
- b200coord (row);
- b200coord (col);
- }
- else if (Term_type == BEE150)
- {
- char r, c;
-
- r = row + ' ';
- c = col + ' ';
- twrite (1, &r, 1);
- twrite (1, &c, 1);
- }
- else /* is superbee */
- {
- sbeecoord (col);
- sbeecoord (row);
- }
-
- Currow = row;
- Curcol = col;
- }
- }
-
- /* cgpos --- position cursor on Chromatics CG */
-
- static cgpos (row, col)
- int row, col;
- {
- char i, j;
-
- if (row == Currow + 1 && col == 0)
- {
- twrite (1, "\r\n", 2); /* CR LF */
- Curcol = 0;
- Currow++;
- }
- else if (row == 0 && col == 0) /* home cursor */
- {
- twrite (1, "\034", 1); /* FS */
- Currow = Curcol = 0;
- }
- else if (row == Currow && col > Curcol && col <= Curcol + 7)
- while (Curcol != col)
- {
- twrite (1, "\035", 1); /* GS */
- Curcol++;
- }
- else if (row == Currow && col < Curcol && col >= Curcol - 7)
- while (Curcol != col)
- {
- twrite (1, "\b", 1);
- Curcol--;
- }
- else
- {
- /* resort to absolute addressing */
- twrite (1, "\001U", 2); /* SOH U */
- i = 511 - (10 * row);
- j = 6 * col;
- cgcoord (j);
- cgcoord (i);
- Currow = row;
- Curcol = col;
- }
-
- }
-
-
- /* cgcoord --- output a decimal coordinate for Chromatics CG */
-
- static cgcoord (i)
- int i;
- {
- int units, tens, hundreds;
- char coords[4];
-
- units = i % 10;
- i /= 10;
- tens = i % 10;
- i /= 10;
- hundreds = i % 10;
-
- coords[0] = hundreds + 16 + ' ';
- coords[1] = tens + 16 + ' ';
- coords[2] = units + 16 + ' ';
- coords[3] = EOS;
- twrite (1, coords, 3);
- }
-
-
-
- /* gt40pos --- position cursor to (row, col) on DEC GT40 with Waugh software */
-
- static gt40pos (row, col)
- int row, col;
- {
- char coord;
-
- if (row != Currow && col != Curcol) /* absolute positioning */
- {
- twrite (1, "\033", 1);
- coord = row + ' ';
- twrite (1, &coord, 1);
- coord = col + ' ';
- twrite (1, &coord, 1);
- Currow = row;
- Curcol = col;
- }
- else if (row != Currow) /* col must = Curcol */
- { /* vertical positioning */
- twrite (1, "\006", 1); /* ACK */
- coord = row + ' ';
- twrite (1, &coord, 1);
- Currow = row;
- }
- else if (abs (col - Curcol) < 2)
- uhcm (col);
- else
- {
- twrite (1, "\025", 1); /* NACK */
- coord = col + ' ';
- twrite (1, &coord, 1);
- Curcol = col;
- }
- }
-
-
-
- /* h19pos --- position cursor on Heath H19 (DEC VT52 compatible, supposedly) */
-
- static h19pos (row, col)
- int row, col;
- {
- int dist;
- char coord;
-
- dist = col - Curcol;
- if (dist < 0)
- dist = -dist;
- if (row == Currow && dist < 4) /* 4 chars for abs. position */
- {
- while (Curcol < col)
- {
- twrite (1, &Screen_image[Currow][Curcol], 1);
- Curcol++;
- }
- while (Curcol > col)
- {
- twrite (1, "\b", 1);
- Curcol--;
- }
- }
- else
- {
- twrite (1, "\033Y", 2);
- coord = row + ' ';
- twrite (1, &coord, 1);
- coord = col + ' ';
- twrite (1, &coord, 1);
- Currow = row;
- Curcol = col;
- }
- }
-
- /* hp21pos --- position cursor on HP 2621 terminal */
-
- static hp21pos (row, col)
- int row, col;
- {
- int units, tens;
-
- if (row == Currow && col == 0)
- {
- twrite (1, "\r\n", 2); /* CR LF */
- Curcol = 0;
- Currow++;
- }
- else if (row == 0 && col == 0) /* home cursor */
- {
- twrite (1, "\033H", 2);
- Currow = Curcol = 0;
- }
- else if (row == Currow && col > Curcol && col <= Curcol + 4)
- while (Curcol != col)
- {
- twrite (1, &Screen_image[Currow][Curcol], 1);
- Curcol++;
- }
- else if (row == Currow && col < Curcol && col >= Curcol - 4)
- while (Curcol != col)
- {
- twrite (1, "\b", 1);
- Curcol--;
- }
- else if (2 * abs (Currow - row) + abs (Curcol - col) <= 7)
- {
- while (Currow < row)
- {
- twrite (1, "\033B", 2);
- Currow++;
- }
- while (Currow > row)
- {
- twrite (1, "\033A", 2);
- Currow--;
- }
- while (Curcol > col)
- {
- twrite (1, "\b", 1);
- Curcol--;
- }
- while (Curcol < col)
- {
- twrite (1, & Screen_image[Currow][Curcol], 1);
- Curcol++;
- }
- }
- else
- {
- /* resort to absolute addressing */
- char c;
-
- twrite (1, "\033&a", 3);
- units = row % 10;
- tens = row / 10;
- if (tens != 0)
- {
- c = tens + '0';
- twrite (1, &c, 1);
- }
- c = units + '0';
- twrite (1, &c, 1);
- twrite (1, "y", 1);
- units = col % 10;
- tens = col / 10;
- if (tens != 0)
- {
- c = tens + '0';
- twrite (1, &c, 1);
- }
- c = units + '0';
- twrite (1, &c, 1);
- twrite (1, "C", 1);
- Currow = row;
- Curcol = col;
- }
- }
-
-
- /* hazpos --- position cursor on Hazeltine 1510 */
-
- static hazpos (row, col)
- int row, col;
- {
- int dist;
- char c;
-
- dist = col - Curcol;
- if (dist < 0)
- dist = -dist;
- if (row == Currow && dist < 4) /* 4 chars for abs. position */
- {
- while (Curcol < col)
- {
- twrite (1, &Screen_image[Currow][Curcol], 1);
- Curcol++;
- }
- while (Curcol > col)
- {
- twrite (1, "\b", 1);
- Curcol--;
- }
- }
- else
- {
- twrite (1, "\033\021", 2);
- c = col;
- twrite (1, &c, 1);
- c = row;
- twrite (1, &c, 1);
- Currow = row;
- Curcol = col;
- }
- }
-
-
- /* ibmpos --- position cursor on IBM 3101 terminal */
-
- static ibmpos (row, col)
- int row, col;
- {
- int dist;
- static char abspos[] = "\033\Y\0\0";
-
- dist = col - Curcol;
- if (dist < 0)
- dist = -dist;
-
- if (row == Currow && dist < 4) /* 4 chars for abs pos */
- {
- while (Curcol < col)
- {
- twrite (1, & Screen_image[Currow][Curcol], 1);
- Curcol++;
- }
- while (Curcol > col)
- {
- twrite (1, "\b", 1);
- Curcol--;
- }
- }
- else
- {
- abspos[2] = row + ' ';
- abspos[3] = col + ' ';
- twrite (1, abspos, 4);
- Currow = row;
- Curcol = col;
- }
- }
-
-
-
- /* iscpos --- position cursor on ISC 8001 color terminal */
-
- static iscpos (row, col)
- int row, col;
- {
- char r, c;
-
- if (row == 0 && col == 0)
- twrite (1, "\b", 1);
- else
- {
- twrite (1, "\003", 1); /* ETX */
- r = row;
- c = col;
- twrite (1, & r, 1);
- twrite (1, & c, 1);
- }
-
- Currow = row;
- Curcol = col;
- }
-
- /* netpos --- position cursor on Netron terminal */
-
- static netpos (row, col)
- int row, col;
- {
- static char abspos[] = "\033=\0\0";
-
- abspos[2] = (char) row;
- abspos[3] = (char) col;
- twrite (1, abspos, 4);
- Currow = row;
- Curcol = col;
- }
-
- /* pepos --- position cursor on Perkin-Elmer 550 & 1100 terminals */
-
- static pepos (row, col)
- int row, col;
- {
- char coord;
-
- /* get on correct row first */
- if (Currow == row)
- ; /* already on correct row; nothing to do */
- else if (row == Currow - 1)
- {
- twrite (1, "\033A", 2); /* cursor up */
- Currow--;
- }
- else if (row == Currow + 1)
- {
- twrite (1, "\033B", 2); /* cursor down */
- Currow++;
- }
- else
- {
- /* vertical absolute positioning */
- twrite (1, "\033X", 2);
- coord = row + ' ';
- twrite (1, & coord, 1);
- }
-
- /* now perform horizontal motion */
- if (abs (col - Curcol) > 3) /* do absolute horizontal position */
- {
- twrite (1, "\033Y", 2);
- coord = col + ' ';
- twrite (1, &coord, 1);
- Curcol = col;
- }
- else
- uhcm (col);
- }
-
- /* sbeecoord --- transmit a coordinate for Superbee terminal */
-
- static sbeecoord (coord)
- int coord;
- {
- char r, c;
-
- r = (coord / 10) + ' ';
- c = (coord % 10) + ' ';
- twrite (1, & r, 1);
- twrite (1, & c, 1);
- }
-
- /* trspos --- position cursor on TRS80 Model 1 */
-
- static trspos (row, col)
- int row, col;
- {
- while (Currow != row)
- {
- if (Currow > row)
- {
- twrite (1, "\033", 1);
- Currow--;
- }
- else
- {
- twrite (1, "\032", 1); /* SUB */
- Currow++;
- }
- }
-
- if (Curcol != col)
- {
- if (col > Curcol)
- while (col > Curcol)
- {
- twrite (1, "\031", 1); /* EM */
- Curcol++;
- }
- else if (col < Curcol / 2)
- {
- twrite (1, "\035", 1); /* GS */
- Curcol = 0;
- while (Curcol < col)
- {
- twrite (1, "\031", 1); /* EM */
- Curcol++;
- }
- }
- else
- while (col < Curcol)
- {
- twrite (1, "\030", 1); /* CAN */
- Curcol--;
- }
- }
- }
-
-
-
- /* tvtpos --- position cursor on Allen's TV Typetwriter II */
-
- static tvtpos (row, col)
- int row, col;
- {
- register int horirel, horiabs, vertrel, vertabs;
-
- horirel = col - Curcol;
- if (horirel < 0)
- horirel = -horirel;
-
- horiabs = col;
-
- if (row <= Currow)
- vertrel = Currow - row;
- else
- vertrel = Nrows - (row - Currow);
-
- if (row == 0)
- vertabs = 0;
- else
- vertabs = Nrows - row;
-
- if (1 + horiabs + vertabs <= horirel + vertrel)
- {
- twrite (1, "\014", 1);
- Currow = Curcol = 0;
- }
-
- while (Currow != row)
- {
- twrite (1, "\013", 1);
- Currow--;
- if (Currow < 0)
- Currow = Nrows - 1;
- }
-
- if (Curcol > col)
- for (; Curcol != col; Curcol--)
- twrite (1, "\b", 1);
- else
- for (; Curcol != col; Curcol++)
- twrite (1, "\t", 1);
- }
-
-
-
- /* regentpos --- position cursor on ADDS Regent 100 */
-
- static regentpos (row, col)
- int row, col;
- {
- int dist;
- char coord;
-
- dist = col - Curcol;
- if (dist < 0)
- dist = -dist;
-
- if (dist > 4 || Currow != row)
- {
- twrite (1, "\033Y", 2);
- coord = ' ' + row;
- twrite (1, &coord, 1);
- coord = ' ' + col;
- twrite (1, &coord, 1);
- Currow = row;
- Curcol = col;
- }
- else
- {
- while (row < Currow)
- {
- twrite (1, "\032", 1); /* SUB, cursor up */
- Currow--;
- }
- while (row > Currow)
- {
- twrite (1, "\n", 1);
- Currow++;
- Curcol = 1;
- }
- if (col > Curcol)
- while (col != Curcol)
- {
- twrite (1, &Screen_image[Currow][Curcol], 1);
- Curcol++;
- }
- else if ((Curcol - col) * 2 >= Ncols)
- while (col != Curcol)
- {
- twrite (1, "\006", 1); /* ACK, cursor right */
- if (Curcol == Ncols)
- Curcol = 1;
- else
- Curcol++;
- }
- else
- while (col != Curcol)
- {
- twrite (1, "\b", 1);
- Curcol--;
- }
- }
- }
-
-
-
- /* vipos --- position cursor on Visual 200 & 50 */
-
- static vipos (row, col)
- register int row, col;
- {
- register int dist;
- register char coord;
-
- if (row == Currow + 1 && col < 3)
- {
- twrite (1, "\015\012", 2);
- Currow++;
- Curcol = 0;
- }
- dist = col - Curcol;
- if (Term_type == VI200 && row == Currow && col < 72 && dist > 2
- && dist < 8 && (col + 1) % 8 < 2)
- {
- twrite (1, "\t", 1);
- Curcol = ((Curcol + 7) / 8) * 8;
- dist = col - Curcol;
- }
- if (dist < 0)
- dist = -dist;
- if (row == Currow && dist < 4) /* 4 chars for abs. position */
- {
- while (Curcol < col)
- {
- twrite (1, &Screen_image[Currow][Curcol], 1);
- Curcol++;
- }
- while (Curcol > col)
- {
- twrite (1, "\b", 1);
- Curcol--;
- }
- }
- else
- {
- twrite (1, "\033Y", 2);
- coord = row + ' ';
- twrite (1, &coord, 1);
- coord = col + ' ';
- twrite (1, &coord, 1);
- Currow = row;
- Curcol = col;
- }
- }
-
-
-
- /* vcpos --- position cursor Volker-Craig 4404 (ADM3A mode) */
-
- static vcpos (row, col)
- int row, col;
- {
- int dist;
- char coord;
-
- dist = col - Curcol;
- if (dist < 0)
- dist = -dist;
- if (row == Currow && dist < 4) /* 4 chars for abs. position */
- {
- while (Curcol < col)
- {
- twrite (1, &Screen_image[Currow][Curcol], 1);
- Curcol++;
- }
- while (Curcol > col)
- {
- twrite (1, "\b", 1);
- Curcol--;
- }
- }
- else
- {
- twrite (1, "\033=", 2);
- coord = row + ' ';
- twrite (1, &coord, 1);
- coord = col + ' ';
- twrite (1, &coord, 1);
- Currow = row;
- Curcol = col;
- }
- }
-
-
- /* espritpos --- position cursor on Hazeltine Esprit */
-
- static espritpos (row, col)
- int row, col;
- {
- int dist;
- char c;
-
- dist = col - Curcol;
- if (dist < 0)
- dist = -dist;
- if (row == Currow && dist < 4) /* 4 chars for abs. position */
- {
- while (Curcol < col)
- {
- twrite (1, &Screen_image[Currow][Curcol], 1);
- Curcol++;
- }
- while (Curcol > col)
- {
- twrite (1, "\b", 1);
- Curcol--;
- }
- }
- else
- {
- twrite (1, "\033\021", 2);
- c = col >= 32 ? col : col + '`';
- twrite (1, &c, 1);
- c = row >= 32 ? row : row + '`';
- twrite (1, &c, 1);
- Currow = row;
- Curcol = col;
- }
- }
-
- /* uhcm --- universal horizontal cursor motion */
-
- static uhcm (col)
- int col;
- {
- while (Curcol < col)
- {
- twrite (1, &Screen_image[Currow][Curcol], 1);
- Curcol++;
- }
-
- while (Curcol > col)
- {
- twrite (1, "\b", 1);
- Curcol--;
- }
- }
- #endif
-