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lp
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support running code from files or stdin

without starting the server, making it usable as a cmdline tool.
Lucas Stadler 11 vuotta sitten
vanhempi
375bbd9434
commit
29acea37f2
1 muutettua tiedostoa jossa 90 lisäystä ja 1 poistoa
Jaettu näkymä Näytä diff tilastot
  1. 90 1
      go/linguaevalia/linguaevalia.go

+ 90 - 1
go/linguaevalia/linguaevalia.go
Näytä tiedosto 

@ -6,8 +6,10 @@ package main
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import (
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	"crypto/rand"
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	"flag"
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	"fmt"
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	"html/template"
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	"io"
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	"io/ioutil"
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	"log"
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	"math/big"
 
@ -15,6 +17,7 @@ import (
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	"os"
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	"os/exec"
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	"path"
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	"strings"
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)
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type Language interface {
 
@ -138,7 +141,7 @@ func homePageHandler(w http.ResponseWriter, r *http.Request) {
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var homePageTemplate = template.Must(template.New("homepage").Parse(homePageTemplateStr))
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func main() {
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func runServer() {
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	addr, port := "localhost", 8000
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	fmt.Printf("running on %s:%d\n", addr, port)
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@ -157,6 +160,92 @@ func main() {
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	}
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}
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func languageForExtension(extension string) *Language {
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	var language *Language = nil
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	for _, lang := range languageMappings {
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		if "."+lang.Extension() == extension {
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			return &lang
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		}
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	}
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	return language
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}
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func runOnce(args []string) {
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	var (
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		f        *os.File
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		err      error
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		langName string = *language
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	)
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	if len(args) > 0 {
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		if *language == "" {
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			l := languageForExtension(path.Ext(args[0]))
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			if l == nil {
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				fmt.Printf("Error: Don't know how to handle '%s' files\n", path.Ext(args[0]))
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				os.Exit(1)
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			}
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			langName = (*l).Name()
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		}
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		f, err = os.Open(args[0])
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	} else {
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		f, err = os.Stdin, nil
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	}
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	defer f.Close()
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	if err != nil {
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		fmt.Println("Error: ", err)
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		os.Exit(1)
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	}
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	langName = strings.ToLower(langName)
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	lang, ok := languageMappings[langName]
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	if !ok {
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		fmt.Printf("Error: Unknown language '%s'\n", langName)
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		os.Exit(1)
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	}
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	if f == os.Stdin {
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		f, err = tempFile("/tmp", "linguaevalia", lang.Extension())
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		_, err = io.Copy(f, os.Stdin)
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		if err != nil {
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			fmt.Printf("Error: ", err)
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			os.Exit(1)
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		}
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		defer os.Remove(f.Name())
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	}
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	res, err := lang.RunFile(f)
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	os.Stdout.Write(res)
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	if err != nil {
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		os.Exit(1)
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	}
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}
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func parseCommand() (string, []string) {
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	if len(os.Args) == 1 {
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		return "server", []string{}
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	} else {
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		return os.Args[1], os.Args[2:]
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	}
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}
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var language = flag.String("l", "", "The language to use for code passed via stdin.")
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func main() {
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	cmd, args := parseCommand()
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	flag.CommandLine.Parse(args)
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	switch cmd {
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	case "server":
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		runServer()
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	case "run":
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		runOnce(flag.Args())
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	default:
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		fmt.Println("Error: Unknown command:", cmd)
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		os.Exit(1)
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	}
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}
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const homePageTemplateStr = `
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<!doctype html>
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<html>