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// Package die contains utilities for fatal error handling.
package die
import (
"fmt"
"os"
)
// If prints the error to stderr and exits if err != nil.
func If(err error) {
if err != nil {
fmt.Fprintf(os.Stderr, "[!] %v\n", err)
os.Exit(1)
}
}
// With prints the message to stderr, appending a newline, and exits.
func With(fstr string, args ...interface{}) {
out := fmt.Sprintf("[!] %s\n", fstr)
fmt.Fprintf(os.Stderr, out, args...)
os.Exit(1)
}
// When prints the error to stderr and exits if cond is true.
func When(cond bool, fstr string, args ...interface{}) {
if cond {
With(fstr, args...)
}
}
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