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- /*
- * The functions in this file negotiate with the operating system for
- * characters, and write characters in a barely buffered fashion on the display.
- * All operating systems.
- */
- #include <stdio.h>
- #include "ed.h"
-
- #if AMIGA
- #define NEW 1006
- #define AMG_MAXBUF 1024
- static long terminal;
- static char scrn_tmp[AMG_MAXBUF+1];
- static int scrn_tmp_p = 0;
- #endif
-
- #if VMS
- #include <stsdef.h>
- #include <ssdef.h>
- #include <descrip.h>
- #include <iodef.h>
- #include <ttdef.h>
-
- #define NIBUF 128 /* Input buffer size */
- #define NOBUF 1024 /* MM says bug buffers win! */
- #define EFN 0 /* Event flag */
-
- char obuf[NOBUF]; /* Output buffer */
- int nobuf; /* # of bytes in above */
- char ibuf[NIBUF]; /* Input buffer */
- int nibuf; /* # of bytes in above */
- int ibufi; /* Read index */
- int oldmode[2]; /* Old TTY mode bits */
- int newmode[2]; /* New TTY mode bits */
- short iochan; /* TTY I/O channel */
- #endif
-
- #if CPM
- #include <bdos.h>
- #endif
-
- #if MSDOS
- #undef LATTICE
- #include <dos.h>
- #endif
-
- #if RAINBOW
- #include "rainbow.h"
- #endif
-
- #if V7
- #include <sgtty.h> /* for stty/gtty functions */
- struct sgttyb ostate; /* saved tty state */
- struct sgttyb nstate; /* values for editor mode */
- #endif
-
- /*
- * This function is called once to set up the terminal device streams.
- * On VMS, it translates SYS$INPUT until it finds the terminal, then assigns
- * a channel to it and sets it raw. On CPM it is a no-op.
- */
- ttopen()
- {
- #if AMIGA
- terminal = Open("RAW:1/1/639/199/MicroEmacs", NEW);
- #endif
- #if VMS
- struct dsc$descriptor idsc;
- struct dsc$descriptor odsc;
- char oname[40];
- int iosb[2];
- int status;
-
- odsc.dsc$a_pointer = "SYS$INPUT";
- odsc.dsc$w_length = strlen(odsc.dsc$a_pointer);
- odsc.dsc$b_dtype = DSC$K_DTYPE_T;
- odsc.dsc$b_class = DSC$K_CLASS_S;
- idsc.dsc$b_dtype = DSC$K_DTYPE_T;
- idsc.dsc$b_class = DSC$K_CLASS_S;
- do {
- idsc.dsc$a_pointer = odsc.dsc$a_pointer;
- idsc.dsc$w_length = odsc.dsc$w_length;
- odsc.dsc$a_pointer = &oname[0];
- odsc.dsc$w_length = sizeof(oname);
- status = LIB$SYS_TRNLOG(&idsc, &odsc.dsc$w_length, &odsc);
- if (status!=SS$_NORMAL && status!=SS$_NOTRAN)
- exit(status);
- if (oname[0] == 0x1B) {
- odsc.dsc$a_pointer += 4;
- odsc.dsc$w_length -= 4;
- }
- } while (status == SS$_NORMAL);
- status = SYS$ASSIGN(&odsc, &iochan, 0, 0);
- if (status != SS$_NORMAL)
- exit(status);
- status = SYS$QIOW(EFN, iochan, IO$_SENSEMODE, iosb, 0, 0,
- oldmode, sizeof(oldmode), 0, 0, 0, 0);
- if (status!=SS$_NORMAL || (iosb[0]&0xFFFF)!=SS$_NORMAL)
- exit(status);
- newmode[0] = oldmode[0];
- newmode[1] = oldmode[1] | TT$M_PASSALL | TT$M_NOECHO;
- status = SYS$QIOW(EFN, iochan, IO$_SETMODE, iosb, 0, 0,
- newmode, sizeof(newmode), 0, 0, 0, 0);
- if (status!=SS$_NORMAL || (iosb[0]&0xFFFF)!=SS$_NORMAL)
- exit(status);
- #endif
- #if CPM
- #endif
- #if MSDOS
- #endif
- #if V7
- gtty(1, &ostate); /* save old state */
- gtty(1, &nstate); /* get base of new state */
- nstate.sg_flags |= RAW;
- nstate.sg_flags &= ~(ECHO|CRMOD); /* no echo for now... */
- stty(1, &nstate); /* set mode */
- #endif
- }
-
- /*
- * This function gets called just before we go back home to the command
- * interpreter. On VMS it puts the terminal back in a reasonable state.
- * Another no-operation on CPM.
- */
- ttclose()
- {
- #if AMIGA
- amg_flush();
- Close(terminal);
- #endif
- #if VMS
- int status;
- int iosb[1];
-
- ttflush();
- status = SYS$QIOW(EFN, iochan, IO$_SETMODE, iosb, 0, 0,
- oldmode, sizeof(oldmode), 0, 0, 0, 0);
- if (status!=SS$_NORMAL || (iosb[0]&0xFFFF)!=SS$_NORMAL)
- exit(status);
- status = SYS$DASSGN(iochan);
- if (status != SS$_NORMAL)
- exit(status);
- #endif
- #if CPM
- #endif
- #if MSDOS
- #endif
- #if V7
- stty(1, &ostate);
- #endif
- }
-
- /*
- * Write a character to the display. On VMS, terminal output is buffered, and
- * we just put the characters in the big array, after checking for overflow.
- * On CPM terminal I/O unbuffered, so we just write the byte out. Ditto on
- * MS-DOS (use the very very raw console output routine).
- */
- ttputc(c)
- #if AMIGA
- char c;
- #endif
- {
- #if AMIGA
- scrn_tmp[scrn_tmp_p++] = c;
- if(scrn_tmp_p>=AMG_MAXBUF)
- amg_flush();
- #endif
- #if VMS
- if (nobuf >= NOBUF)
- ttflush();
- obuf[nobuf++] = c;
- #endif
-
- #if CPM
- bios(BCONOUT, c, 0);
- #endif
-
- #if MSDOS & CWC86
- dosb(CONDIO, c, 0);
- #endif
-
- #if RAINBOW
- Put_Char(c); /* fast video */
- #endif
-
- #if V7
- fputc(c, stdout);
- #endif
- }
-
- amg_flush()
- {
- if(scrn_tmp_p)
- Write(terminal,scrn_tmp,scrn_tmp_p);
- scrn_tmp_p = 0;
- }
-
- /*
- * Flush terminal buffer. Does real work where the terminal output is buffered
- * up. A no-operation on systems where byte at a time terminal I/O is done.
- */
- ttflush()
- {
- #if AMIGA
- amg_flush();
- #endif
- #if VMS
- int status;
- int iosb[2];
-
- status = SS$_NORMAL;
- if (nobuf != 0) {
- status = SYS$QIOW(EFN, iochan, IO$_WRITELBLK|IO$M_NOFORMAT,
- iosb, 0, 0, obuf, nobuf, 0, 0, 0, 0);
- if (status == SS$_NORMAL)
- status = iosb[0] & 0xFFFF;
- nobuf = 0;
- }
- return (status);
- #endif
- #if CPM
- #endif
- #if MSDOS
- #endif
- #if V7
- fflush(stdout);
- #endif
- }
-
- /*
- * Read a character from the terminal, performing no editing and doing no echo
- * at all. More complex in VMS that almost anyplace else, which figures. Very
- * simple on CPM, because the system can do exactly what you want.
- */
- ttgetc()
- {
- #if AMIGA
- char ch;
- amg_flush();
- Read(terminal, &ch, 1);
- return (int) ch;
- #endif
- #if VMS
- int status;
- int iosb[2];
- int term[2];
-
- while (ibufi >= nibuf) {
- ibufi = 0;
- term[0] = 0;
- term[1] = 0;
- status = SYS$QIOW(EFN, iochan, IO$_READLBLK|IO$M_TIMED,
- iosb, 0, 0, ibuf, NIBUF, 0, term, 0, 0);
- if (status != SS$_NORMAL)
- exit(status);
- status = iosb[0] & 0xFFFF;
- if (status!=SS$_NORMAL && status!=SS$_TIMEOUT)
- exit(status);
- nibuf = (iosb[0]>>16) + (iosb[1]>>16);
- if (nibuf == 0) {
- status = SYS$QIOW(EFN, iochan, IO$_READLBLK,
- iosb, 0, 0, ibuf, 1, 0, term, 0, 0);
- if (status != SS$_NORMAL
- || (status = (iosb[0]&0xFFFF)) != SS$_NORMAL)
- exit(status);
- nibuf = (iosb[0]>>16) + (iosb[1]>>16);
- }
- }
- return (ibuf[ibufi++] & 0xFF); /* Allow multinational */
- #endif
-
- #if CPM
- return (biosb(BCONIN, 0, 0));
- #endif
-
- #if RAINBOW
- int Ch;
-
- while ((Ch = Read_Keyboard()) < 0);
-
- if ((Ch & Function_Key) == 0)
- if (!((Ch & 0xFF) == 015 || (Ch & 0xFF) == 0177))
- Ch &= 0xFF;
-
- return Ch;
- #endif
-
- #if MSDOS & MWC86
- return (dosb(CONRAW, 0, 0));
- #endif
-
- #if V7
- return(fgetc(stdin));
- #endif
- }
-
-
-