ref: 8afff8c7c43d3e593313832dfa371461a0cb133b
dir: /helpers/pygments.go/
// Copyright © 2013 Steve Francia <[email protected]>.
//
// Licensed under the Simple Public License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://opensource.org/licenses/Simple-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package helpers
import (
"bytes"
"os/exec"
"strings"
jww "github.com/spf13/jwalterweatherman"
)
func Highlight(code string, lexer string) string {
var pygmentsBin = "pygmentize"
if _, err := exec.LookPath(pygmentsBin); err != nil {
jww.WARN.Println("Highlighting requries Pygments to be installed and in the path")
return code
}
var out bytes.Buffer
var stderr bytes.Buffer
cmd := exec.Command(pygmentsBin, "-l"+lexer, "-fhtml", "-O style=monokai,noclasses=true,encoding=utf-8")
cmd.Stdin = strings.NewReader(code)
cmd.Stdout = &out
cmd.Stderr = &stderr
if err := cmd.Run(); err != nil {
jww.ERROR.Print(stderr.String())
return code
}
return out.String()
}