42 lines
1.2 KiB
Go
42 lines
1.2 KiB
Go
package main
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import (
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"log"
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"os"
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"golang.org/x/term"
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)
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// getTerminalWidth returns the width of the active terminal.
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// If the output is not an interactive terminal (e.g., it's being piped to a file
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// or another command), it returns a default width and false.
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func getTerminalWidth() (int, bool) {
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// term.IsTerminal checks if the given file descriptor is connected to a terminal.
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// We use os.Stdout.Fd() to check the standard output.
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if term.IsTerminal(int(os.Stdout.Fd())) {
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// term.GetSize returns the dimensions of the given terminal.
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width, _, err := term.GetSize(int(os.Stdout.Fd()))
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if err != nil {
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// If we can't get the size for some reason, fall back to the default.
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log.Printf("could not get terminal size: %v", err)
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return 120, false
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}
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return width, true
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}
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// If it's not a terminal, return the default width.
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return 120, false
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}
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// truncateString shortens a string to the specified length, adding an ellipsis if truncated.
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func truncateString(s string, maxLength int) string {
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if len(s) <= maxLength {
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return s
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}
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// Subtract 3 to make room for the ellipsis "..."
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if maxLength < 3 {
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return "..."
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}
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return s[:maxLength-3] + "..."
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}
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