tools/perf/util/term.c

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