50 lines
1019 B
Go
50 lines
1019 B
Go
package main
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import (
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"bufio"
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"bytes"
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"context"
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"flag"
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"fmt"
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"strings"
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"os"
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"git.defalsify.org/festive/engine"
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)
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func main() {
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var dir string
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var root string
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flag.StringVar(&dir, "d", ".", "resource dir to read from")
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flag.StringVar(&root, "root", "root", "entry point symbol")
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flag.Parse()
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fmt.Fprintf(os.Stderr, "starting session at symbol '%s' using resource dir: %s\n", root, dir)
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ctx := context.Background()
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en := engine.NewDefaultEngine(dir)
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err := en.Init(root, ctx)
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if err != nil {
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fmt.Fprintf(os.Stderr, "cannot init: %v\n", err)
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os.Exit(1)
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}
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running := true
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for running {
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reader := bufio.NewReader(os.Stdin)
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in, err := reader.ReadString('\n')
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if err != nil {
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fmt.Fprintf(os.Stderr, "cannot read input: %v\n", err)
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os.Exit(1)
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}
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in = strings.TrimSpace(in)
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err = en.Exec([]byte(in), ctx)
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if err != nil {
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fmt.Fprintf(os.Stderr, "execution terminated: %v\n", err)
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os.Exit(1)
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}
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b := bytes.NewBuffer(nil)
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en.WriteResult(b)
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fmt.Println(b.String())
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}
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}
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