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package cobol
import (
"fmt"
"os"
"golang.org/x/term"
)
func osTerminalWidth() (int, bool) {
w, _, err := ttyGetSize()
if err == nil {
return w, true
}
// term.IsTerminal checks if the given file descriptor is connected to a terminal.
// We use os.Stdout.Fd() to check the standard output.
if term.IsTerminal(int(os.Stdout.Fd())) {
var err error
// term.GetSize returns the dimensions of the given terminal.
WIDTH, _, err = term.GetSize(int(os.Stdout.Fd()))
if err != nil {
// If we can't get the size for some reason, fall back to the default.
fmt.Printf("could not get terminal size: %v", err)
return WIDTH, false
}
return WIDTH, true
}
// If it's not a terminal, return the default width.
return WIDTH, false
}
func ttyGetSize() (int, int, error) {
tty, err := os.Open("/dev/tty")
if err != nil {
return 0, 0, err
}
w, h, err := term.GetSize(int(tty.Fd()))
if err != nil {
fmt.Println("linux.osTerminalWidth tty.Fd() err", w, h, err)
}
return w, h, err
}
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