main.go
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package main
import (
"fmt"
"log"
"os"
"strconv"
"j3s.sh/zoa/env"
"j3s.sh/zoa/shell"
"mvdan.cc/sh/v3/interp"
)
func printUsageExit() {
fmt.Printf(`usage: zoa <command> [arguments]
commands:
fmt TODO
run <posix shell script> - 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 "fmt":
if len(os.Args) <= 2 {
fmt.Println("fmt requires 1 argument: the path to a posix shell script")
os.Exit(1)
}
shell.ZoaFmt(os.Args[2])
case "cp":
var mode os.FileMode
if len(os.Args) < 4 {
fmt.Println("cp requires at least 2 arguments: source and destination")
os.Exit(1)
}
if len(os.Args) == 4 {
mode = 0644
}
if len(os.Args) > 4 {
m64, err := strconv.ParseUint(os.Args[4], 0, 32)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
mode = os.FileMode(m64)
}
shell.ZoaCopy(os.Args[2], os.Args[3], mode)
case "version":
fmt.Println("0.1.0")
default:
printUsageExit()
}
os.Exit(0)
}
func zoaRun() {
if len(os.Args) <= 2 {
fmt.Println("run requires 1 argument: the path to a posix shell script")
os.Exit(1)
}
script := os.Args[2]
envs, err := env.GenerateEnv()
if err != nil {
log.Fatal(err)
}
r, err := interp.New(
// TODO: make quiet var silence stdout?
interp.StdIO(nil, os.Stdout, os.Stdout),
interp.CallHandler(shell.CallHandler),
interp.Env(envs),
)
if err != nil {
log.Fatal(err)
}
// TODO: err?
shell.Run(r, script)
}