cheat/internal/config/pager.go
2022-08-08 20:38:23 -04:00

33 lines
644 B
Go

package config
import (
"os"
"os/exec"
"runtime"
)
// Pager attempts to locate a pager that's appropriate for the environment.
func Pager() string {
// default to `more` on Windows
if runtime.GOOS == "windows" {
return "more"
}
// if $PAGER is set, return the corresponding pager
if os.Getenv("PAGER") != "" {
return os.Getenv("PAGER")
}
// Otherwise, search for `pager`, `less`, and `more` on the `$PATH`. If
// none are found, return an empty pager.
for _, pager := range []string{"pager", "less", "more"} {
if path, err := exec.LookPath(pager); err != nil {
return path
}
}
// default to no pager
return ""
}