termSize.go


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package cobol

import (
	"log"
	"os"

	"golang.org/x/term"
)

var WIDTH int = 120

// getTerminalWidth returns the width of the active terminal.
// If the output is not an interactive terminal (e.g., it's being piped to a file
// or another command), it returns a default width and false.
func getTerminalWidth() (int, bool) {
	// 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.
			log.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 TerminalCut(cut string) {
	i, _ := getTerminalWidth()
	log.Printf("%s\n", cut[0:i])
}