7b38fdd801
This commit moves a huge chunk of the code to go. The TODO.md document indicates what is left to be done.
46 lines
1.2 KiB
Go
46 lines
1.2 KiB
Go
// Package execx defines extensions to the "os/exec" package
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package execx
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import (
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"os/exec"
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"github.com/tkw1536/goprogram/stream"
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)
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// ExecCommandError is returned by Exec when a command could not be executed.
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// This typically hints that the executable cannot be found, but may have other causes.
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const ExecCommandError = 127
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// Exec executes a system command with the specified input/output streams, working directory, and arguments.
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//
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// If the command executes, it's exit code will be returned.
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// If the command can not be executed, returns [ExecCommandError].
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func Exec(io stream.IOStream, workdir string, exe string, argv ...string) int {
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// setup the command
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cmd := exec.Command(exe, argv...)
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cmd.Dir = workdir
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cmd.Stdin = io.Stdin
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cmd.Stdout = io.Stdout
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cmd.Stderr = io.Stderr
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// run it
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err := cmd.Run()
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// non-zero exit
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if err, ok := err.(*exec.ExitError); ok {
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return err.ExitCode()
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}
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// unknown error
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if err != nil {
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return ExecCommandError
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}
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// everything is fine!
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return 0
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}
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// MustExec is like Exec, except that it returns true if the command exited successfully, and else false.
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func MustExec(io stream.IOStream, workdir string, exe string, argv ...string) bool {
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return Exec(io, workdir, exe, argv...) == 0
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}
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