tools/perf/util/term.c

   1 #include "term.h"
   2 #include <stdlib.h>
   3 #include <termios.h>
   4 #include <unistd.h>
   5 #include <sys/ioctl.h>
   6
   7 void get_term_dimensions(struct winsize *ws)
   8 {
   9         char *s = getenv("LINES");
  10
  11         if (s != NULL) {
  12                 ws->ws_row = atoi(s);
  13                 s = getenv("COLUMNS");
  14                 if (s != NULL) {
  15                         ws->ws_col = atoi(s);
  16                         if (ws->ws_row && ws->ws_col)
  17                                 return;
  18                 }
  19         }
  20 #ifdef TIOCGWINSZ
  21         if (ioctl(1, TIOCGWINSZ, ws) == 0 &&
  22             ws->ws_row && ws->ws_col)
  23                 return;
  24 #endif
  25         ws->ws_row = 25;
  26         ws->ws_col = 80;
  27 }
  28
  29 void set_term_quiet_input(struct termios *old)
  30 {
  31         struct termios tc;
  32
  33         tcgetattr(0, old);
  34         tc = *old;
  35         tc.c_lflag &= ~(ICANON | ECHO);
  36         tc.c_cc[VMIN] = 0;
  37         tc.c_cc[VTIME] = 0;
  38         tcsetattr(0, TCSANOW, &tc);
  39 }