main.go
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package main
import (
"fmt"
"log"
"os"
"path/filepath"
"j3s.sh/zoa/env"
"j3s.sh/zoa/shell"
"mvdan.cc/sh/v3/interp"
)
func printUsageExit() {
// TODO: -v -h
fmt.Printf(`usage: zoa <command> [arguments]
commands:
run <main|scripts/example> - execute given zoa script
version - print zoa version
examples:
zoa run main
zoa run scripts/hello-world
misc commands:
cp <src> <dst> [mode] - copy file from source to dest, optionally set mode
get <url> <dst> - download file from url to dest
watch <file> <command> - execute command when file changes
examples: see README
`)
os.Exit(1)
}
func main() {
if len(os.Args) <= 1 {
printUsageExit()
}
command := os.Args[1]
switch command {
case "run":
zoaRun()
case "version":
fmt.Println("0.1.0")
os.Exit(0)
default:
printUsageExit()
}
}
func zoaRun() {
if len(os.Args) <= 2 {
fmt.Println("run requires 1 argument: the path to a posix shell script")
os.Exit(1)
}
path := os.Args[2]
if path != "main" {
fmt.Println("incorrect script name: script must be named either main or scripts/<scriptname>")
os.Exit(1)
}
envs, err := env.GenerateEnv()
if err != nil {
log.Fatal(err)
}
r, err := interp.New(
// TODO: make quiet flag silence stdout
interp.StdIO(nil, os.Stdout, os.Stdout),
interp.CallHandler(shell.CallHandler),
interp.Env(envs),
)
if err != nil {
log.Fatal(err)
}
session := &shell.Session{
ScriptPath: path,
ScriptBaseDir: filepath.Dir(path),
Runner: r,
SubShell: false,
}
// todo: err?
session.Run()
}