/
pl0dashvm.go
76 lines (69 loc) · 1.32 KB
/
pl0dashvm.go
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package main
import (
"bufio"
"fmt"
"github.com/codegangsta/cli"
"github.com/ryo33/pl0dashvm/vm"
"os"
)
func main() {
app := cli.NewApp()
app.Name = "pl0dashrun"
app.Usage = "run pl0dash"
app.Action = action
app.HideHelp = true
app.Flags = []cli.Flag{
cli.HelpFlag,
cli.BoolFlag{
Name: "trace, t",
Usage: "print detailed reporting",
},
}
cli.AppHelpTemplate = `NAME:
{{.Name}} - {{.Usage}}
USAGE:
{{.Name}} [options] [arguments...]
VERSION:
{{.Version}}{{if or .Author .Email}}
AUTHOR:{{if .Author}}
{{.Author}}{{if .Email}} - <{{.Email}}>{{end}}{{else}}
{{.Email}}{{end}}{{end}}
OPTIONS:
{{range .Flags}}{{.}}
{{end}}
`
app.Run(os.Args)
}
func action(c *cli.Context) {
args := c.Args()
if len(args) == 0 {
fmt.Fprintln(os.Stderr, "filename required")
os.Exit(1)
}
f, err := os.Open(args[0])
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
var lines []string
scanner := bufio.NewScanner(f)
for scanner.Scan() {
lines = append(lines, scanner.Text())
}
if err := scanner.Err(); err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
option := vm.NewOption()
if c.Bool("trace") {
option.Trace()
}
result, errs := vm.Run(lines, option)
if len(errs) != 0 {
for _, err := range errs {
fmt.Fprintln(os.Stderr, err)
}
os.Exit(1)
}
fmt.Print(result)
}