Rename interestingtimes.c to tty.c. (It's the "not curses" code.)

1 files changed, 0 insertions, 277 deletions

diff --git a/lib/interestingtimes.c b/lib/interestingtimes.c
deleted file mode 100644
index a1aa2b67..00000000
--- a/lib/interestingtimes.c
+++ /dev/null
@@ -1,277 +0,0 @@
-/* interestingtimes.c - cursor control
- *
- * Copyright 2015 Rob Landley <rob@landley.net>
- */
-
-#include "toys.h"
-
-int tty_fd(void)
-{
-  int i, j;
-
-  for (i = 0; i<3; i++) if (isatty(j = (i+1)%3)) return j;
-
-  return notstdio(open("/dev/tty", O_RDWR));
-}
-
-// Quick and dirty query size of terminal, doesn't do ANSI probe fallback.
-// set x=80 y=25 before calling to provide defaults. Returns 0 if couldn't
-// determine size.
-
-int terminal_size(unsigned *xx, unsigned *yy)
-{
-  struct winsize ws;
-  unsigned i, x = 0, y = 0;
-  char *s;
-
-  // stdin, stdout, stderr
-  for (i=0; i<3; i++) {
-    memset(&ws, 0, sizeof(ws));
-    if (isatty(i) && !ioctl(i, TIOCGWINSZ, &ws)) {
-      if (ws.ws_col) x = ws.ws_col;
-      if (ws.ws_row) y = ws.ws_row;
-
-      break;
-    }
-  }
-  s = getenv("COLUMNS");
-  if (s) sscanf(s, "%u", &x);
-  s = getenv("LINES");
-  if (s) sscanf(s, "%u", &y);
-
-  // Never return 0 for either value, leave it at default instead.
-  if (xx && x) *xx = x;
-  if (yy && y) *yy = y;
-
-  return x || y;
-}
-
-// Query terminal size, sending ANSI probe if necesary. (Probe queries xterm
-// size through serial connection, when local TTY doesn't know but remote does.)
-// Returns 0 if ANSI probe sent, 1 if size determined from tty or environment
-
-int terminal_probesize(unsigned *xx, unsigned *yy)
-{
-  if (terminal_size(xx, yy) && (!xx || *xx) && (!yy || *yy)) return 1;
-
-  // Send probe: bookmark cursor position, jump to bottom right,
-  // query position, return cursor to bookmarked position.
-  xprintf("\033[s\033[999C\033[999B\033[6n\033[u");
-
-  return 0;
-}
-
-// Wrapper that parses results from ANSI probe to update screensize.
-// Otherwise acts like scan_key()
-int scan_key_getsize(char *scratch, int miliwait, unsigned *xx, unsigned *yy)
-{
-  int key;
-
-  if (512&(key = scan_key(scratch, miliwait))) {
-    if (key>0) {
-      if (xx) *xx = (key>>10)&1023;
-      if (yy) *yy = (key>>20)&1023;
-
-      return -3;
-    }
-  }
-
-  return key;
-}
-
-// Reset terminal to known state, saving copy of old state if old != NULL.
-int set_terminal(int fd, int raw, int speed, struct termios *old)
-{
-  struct termios termio;
-  int i = tcgetattr(fd, &termio);
-
-  // Fetch local copy of old terminfo, and copy struct contents to *old if set
-  if (i) return i;
-  if (old) *old = termio;
-
-  // the following are the bits set for an xterm. Linux text mode TTYs by
-  // default add two additional bits that only matter for serial processing
-  // (turn serial line break into an interrupt, and XON/XOFF flow control)
-
-  // Any key unblocks output, swap CR and NL on input
-  termio.c_iflag = IXANY|ICRNL|INLCR;
-  if (toys.which->flags & TOYFLAG_LOCALE) termio.c_iflag |= IUTF8;
-
-  // Output appends CR to NL, does magic undocumented postprocessing
-  termio.c_oflag = ONLCR|OPOST;
-
-  // Leave serial port speed alone
-  // termio.c_cflag = C_READ|CS8|EXTB;
-
-  // Generate signals, input entire line at once, echo output
-  // erase, line kill, escape control characters with ^
-  // erase line char at a time
-  // "extended" behavior: ctrl-V quotes next char, ctrl-R reprints unread chars,
-  // ctrl-W erases word
-  termio.c_lflag = ISIG|ICANON|ECHO|ECHOE|ECHOK|ECHOCTL|ECHOKE|IEXTEN;
-
-  if (raw) cfmakeraw(&termio);
-
-  if (speed) {
-    int i, speeds[] = {50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400,
-                    4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800,
-                    500000, 576000, 921600, 1000000, 1152000, 1500000, 2000000,
-                    2500000, 3000000, 3500000, 4000000};
-
-    // Find speed in table, adjust to constant
-    for (i = 0; i < ARRAY_LEN(speeds); i++) if (speeds[i] == speed) break;
-    if (i == ARRAY_LEN(speeds)) error_exit("unknown speed: %d", speed);
-    cfsetspeed(&termio, i+1+4081*(i>15));
-  }
-
-  return tcsetattr(fd, TCSAFLUSH, &termio);
-}
-
-void xset_terminal(int fd, int raw, int speed, struct termios *old)
-{
-  if (-1 != set_terminal(fd, raw, speed, old)) return;
-
-  sprintf(libbuf, "/proc/self/fd/%d", fd);
-  libbuf[readlink0(libbuf, libbuf, sizeof(libbuf))] = 0;
-  perror_exit("tcsetattr %s", libbuf);
-}
-
-struct scan_key_list {
-  char *name, *seq;
-} static const scan_key_list[] = TAGGED_ARRAY(KEY,
-  // up down right left pgup pgdn home end ins
-  {"UP", "\033[A"}, {"DOWN", "\033[B"}, {"RIGHT", "\033[C"}, {"LEFT", "\033[D"},
-  {"PGUP", "\033[5~"}, {"PGDN", "\033[6~"}, {"HOME", "\033OH"},
-  {"END", "\033OF"}, {"INSERT", "\033[2~"},
-
-  {"F1", "\033OP"}, {"F2", "\033OQ"}, {"F3", "\033OR"}, {"F4", "\033OS"},
-  {"F5", "\033[15~"}, {"F6", "\033[17~"}, {"F7", "\033[18~"},
-  {"F8", "\033[19~"}, {"F9", "\033[20~"},
-
-  {"SUP", "\033[1;2A"}, {"AUP", "\033[1;3A"}, {"CUP", "\033[1;5A"},
-  {"SDOWN", "\033[1;2B"}, {"ADOWN", "\033[1;3B"}, {"CDOWN", "\033[1;5B"},
-  {"SRIGHT", "\033[1;2C"}, {"ARIGHT", "\033[1;3C"}, {"CRIGHT", "\033[1;5C"},
-  {"SLEFT", "\033[1;2D"}, {"ALEFT", "\033[1;3D"}, {"CLEFT", "\033[1;5D"},
-
-  {"SF1", "\033O1;2P"}, {"AF1", "\033O1;3P"}, {"CF1", "\033[1;5P"}
-);
-
-// Scan stdin for a keypress, parsing known escape sequences
-// Blocks for miliwait miliseconds, none 0, forever if -1
-// Returns: 0-255=literal, -1=EOF, -2=TIMEOUT, 256-...=index into scan_key_list
-// >512 is x<<9+y<<21
-// scratch space is necessary because last char of !seq could start new seq
-// Zero out first byte of scratch before first call to scan_key
-// block=0 allows fetching multiple characters before updating display
-int scan_key(char *scratch, int miliwait)
-{
-  struct pollfd pfd;
-  int maybe, i, j;
-  char *test;
-
-  for (;;) {
-    pfd.fd = 0;
-    pfd.events = POLLIN;
-    pfd.revents = 0;
-
-    maybe = 0;
-    if (*scratch) {
-      int pos[6];
-      unsigned x, y;
-
-      // Check for return from terminal size probe
-      memset(pos, 0, 6*sizeof(int));
-      scratch[(1+*scratch)&15] = 0;
-      sscanf(scratch+1, "\033%n[%n%3u%n;%n%3u%nR%n", pos, pos+1, &y,
-             pos+2, pos+3, &x, pos+4, pos+5);
-      if (pos[5]) {
-        // Recognized X/Y position, consume and return
-        *scratch = 0;
-        return 512+(x<<10)+(y<<20);
-      } else for (i=0; i<6; i++) if (pos[i]==*scratch) maybe = 1;
-
-      // Check sequences
-      for (i = 0; i<ARRAY_LEN(scan_key_list); i++) {
-        test = scan_key_list[i].seq;
-        for (j = 0; j<*scratch; j++) if (scratch[j+1] != test[j]) break;
-        if (j == *scratch) {
-          maybe = 1;
-          if (!test[j]) {
-            // We recognized current sequence: consume and return
-            *scratch = 0;
-            return 256+i;
-          }
-        }
-      }
-
-      // If current data can't be a known sequence, return next raw char
-      if (!maybe) break;
-    }
-
-    // Need more data to decide
-
-    // 30 miliseconds is about the gap between characters at 300 baud 
-    if (maybe || miliwait != -1)
-      if (!xpoll(&pfd, 1, maybe ? 30 : miliwait)) break;
-
-    // Read 1 byte so we don't overshoot sequence match. (We can deviate
-    // and fail to match, but match consumes entire buffer.)
-    if (toys.signal>0 || 1 != read(0, scratch+1+*scratch, 1))
-      return (toys.signal>0) ? -3 : -1;
-    ++*scratch;
-  }
-
-  // Was not a sequence
-  if (!*scratch) return -2;
-  i = scratch[1];
-  if (--*scratch) memmove(scratch+1, scratch+2, *scratch);
-
-  return i;
-}
-
-void tty_esc(char *s)
-{
-  printf("\033[%s", s);
-}
-
-void tty_jump(int x, int y)
-{
-  char s[32];
-
-  sprintf(s, "%d;%dH", y+1, x+1);
-  tty_esc(s);
-}
-
-void tty_reset(void)
-{
-  set_terminal(0, 0, 0, 0);
-  tty_esc("?25h");
-  tty_esc("0m");
-  tty_jump(0, 999);
-  tty_esc("K");
-  fflush(0);
-}
-
-// If you call set_terminal(), use sigatexit(tty_sigreset);
-void tty_sigreset(int i)
-{
-  tty_reset();
-  _exit(i ? 128+i : 0);
-}
-
-void start_redraw(unsigned *width, unsigned *height)
-{
-  // If never signaled, do raw mode setup.
-  if (!toys.signal) {
-    *width = 80;
-    *height = 25;
-    set_terminal(0, 1, 0, 0);
-    sigatexit(tty_sigreset);
-    xsignal(SIGWINCH, generic_signal);
-  }
-  if (toys.signal != -1) {
-    toys.signal = -1;
-    terminal_probesize(width, height);
-  }
-  xprintf("\033[H\033[J");
-}