Getting close to a basic working readline now.

[pd_readline] / mg / ttyio.c

diff --git a/mg/ttyio.c b/mg/ttyio.c
deleted file mode 100644 (file)
index 228a370..0000000
--- a/mg/ttyio.c
+++ /dev/null
@@ -1,225 +0,0 @@
-/*     $OpenBSD: ttyio.c,v 1.32 2008/02/05 12:53:38 reyk Exp $ */
-
-/* This file is in the public domain. */
-
-/*
- * POSIX terminal I/O.
- *
- * The functions in this file negotiate with the operating system for
- * keyboard characters, and write characters to the display in a barely
- * buffered fashion.
- */
-#include "def.h"
-
-#include <sys/types.h>
-#include <sys/time.h>
-#include <sys/ioctl.h>
-#include <fcntl.h>
-#include <termios.h>
-#include <term.h>
-
-#define NOBUF  512                     /* Output buffer size. */
-
-#ifndef TCSASOFT
-#define TCSASOFT       0
-#endif
-
-int    ttstarted;
-char   obuf[NOBUF];                    /* Output buffer. */
-size_t nobuf;                          /* Buffer count. */
-struct termios oldtty;                 /* POSIX tty settings. */
-struct termios newtty;
-int    nrow;                           /* Terminal size, rows. */
-int    ncol;                           /* Terminal size, columns. */
-
-/*
- * This function gets called once, to set up the terminal.
- * On systems w/o TCSASOFT we turn off off flow control,
- * which isn't really the right thing to do.
- */
-void
-ttopen(void)
-{
-       if (!isatty(STDIN_FILENO) || !isatty(STDOUT_FILENO))
-               panic("standard input and output must be a terminal");
-
-       if (ttraw() == FALSE)
-               panic("aborting due to terminal initialize failure");
-}
-
-/*
- * This function sets the terminal to RAW mode, as defined for the current
- * shell.  This is called both by ttopen() above and by spawncli() to
- * get the current terminal settings and then change them to what
- * mg expects. Thus, tty changes done while spawncli() is in effect
- * will be reflected in mg.
- */
-int
-ttraw(void)
-{
-       if (tcgetattr(0, &oldtty) < 0) {
-               ewprintf("ttopen can't get terminal attributes");
-               return (FALSE);
-       }
-       (void)memcpy(&newtty, &oldtty, sizeof(newtty));
-       /* Set terminal to 'raw' mode and ignore a 'break' */
-       newtty.c_cc[VMIN] = 1;
-       newtty.c_cc[VTIME] = 0;
-       newtty.c_iflag |= IGNBRK;
-       newtty.c_iflag &= ~(BRKINT | PARMRK | INLCR | IGNCR | ICRNL | IXON);
-       newtty.c_oflag &= ~OPOST;
-       newtty.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
-
-#if !TCSASOFT
-       /*
-        * If we don't have TCSASOFT, force terminal to
-        * 8 bits, no parity.
-        */
-       newtty.c_iflag &= ~ISTRIP;
-       newtty.c_cflag &= ~(CSIZE | PARENB);
-       newtty.c_cflag |= CS8;
-#endif
-       if (tcsetattr(0, TCSASOFT | TCSADRAIN, &newtty) < 0) {
-               ewprintf("ttopen can't tcsetattr");
-               return (FALSE);
-       }
-       ttstarted = 1;
-
-       return (TRUE);
-}
-
-/*
- * This function gets called just before we go back home to the shell.
- * Put all of the terminal parameters back.
- * Under UN*X this just calls ttcooked(), but the ttclose() hook is in
- * because vttidy() in display.c expects it for portability reasons.
- */
-void
-ttclose(void)
-{
-       if (ttstarted) {
-               if (ttcooked() == FALSE)
-                       panic("");      /* ttcooked() already printf'd */
-               ttstarted = 0;
-       }
-}
-
-/*
- * This function restores all terminal settings to their default values,
- * in anticipation of exiting or suspending the editor.
- */
-int
-ttcooked(void)
-{
-       ttflush();
-       if (tcsetattr(0, TCSASOFT | TCSADRAIN, &oldtty) < 0) {
-               ewprintf("ttclose can't tcsetattr");
-               return (FALSE);
-       }
-       return (TRUE);
-}
-
-/*
- * Write character to the display.  Characters are buffered up,
- * to make things a little bit more efficient.
- */
-int
-ttputc(int c)
-{
-       if (nobuf >= NOBUF)
-               ttflush();
-       obuf[nobuf++] = c;
-       return (c);
-}
-
-/*
- * Flush output.
- */
-void
-ttflush(void)
-{
-       ssize_t  written;
-       char    *buf = obuf;
-
-       if (nobuf == 0)
-               return;
-
-       while ((written = write(fileno(stdout), buf, nobuf)) != nobuf) {
-               if (written == -1) {
-                       if (errno == EINTR)
-                               continue;
-                       panic("ttflush write failed");
-               }
-               buf += written;
-               nobuf -= written;
-       }
-       nobuf = 0;
-}
-
-/*
- * Read character from terminal. All 8 bits are returned, so that you
- * can use a multi-national terminal.
- */
-int
-ttgetc(void)
-{
-       char    c;
-       ssize_t ret;
-
-       do {
-               ret = read(STDIN_FILENO, &c, 1);
-               if (ret == -1 && errno == EINTR) {
-                       if (winch_flag) {
-                               redraw(0, 0);
-                               winch_flag = 0;
-                       }
-               } else if (ret == 1)
-                       break;
-       } while (1);
-       return ((int) c) & 0xFF;
-}
-
-/*
- * Returns TRUE if there are characters waiting to be read.
- */
-int
-charswaiting(void)
-{
-       int     x;
-
-       return ((ioctl(0, FIONREAD, &x) < 0) ? 0 : x);
-}
-
-/*
- * panic - just exit, as quickly as we can.
- */
-void
-panic(char *s)
-{
-       ttclose();
-       (void) fputs("panic: ", stderr);
-       (void) fputs(s, stderr);
-       (void) fputc('\n', stderr);
-       exit(1);
-}
-
-/*
- * This function returns FALSE if any characters have showed up on the
- * tty before 'msec' milliseconds.
- */
-int
-ttwait(int msec)
-{
-       fd_set          readfds;
-       struct timeval  tmout;
-
-       FD_ZERO(&readfds);
-       FD_SET(0, &readfds);
-
-       tmout.tv_sec = msec/1000;
-       tmout.tv_usec = msec - tmout.tv_sec * 1000;
-
-       if ((select(1, &readfds, NULL, NULL, &tmout)) == 0)
-               return (TRUE);
-       return (FALSE);
-}