I want to use ioctl to get winsize. i have c code but dont get zig

squeek502 · March 16, 2025, 6:30am

An example from std.Progress:

lib/std/Progress.zig

aa3db7cc1


      
          var winsize: posix.winsize = .{
              .row = 0,
              .col = 0,
              .xpixel = 0,
              .ypixel = 0,
          };
          
          const err = posix.system.ioctl(fd, posix.T.IOCGWINSZ, @intFromPtr(&winsize));
          if (posix.errno(err) == .SUCCESS) {
              global_progress.rows = winsize.row;
              global_progress.cols = winsize.col;
          } else {
              std.log.debug("failed to determine terminal size; using conservative guess 80x25", .{});
              global_progress.rows = 25;
              global_progress.cols = 80;
          }

(posix here is std.posix FYI)