mirror of
https://github.com/gohugoio/hugo.git
synced 2024-11-29 12:12:10 -05:00
66 lines
1.7 KiB
Go
66 lines
1.7 KiB
Go
// Copyright © 2013-14 Steve Francia <spf@spf13.com>.
|
|
//
|
|
// 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"
|
|
"fmt"
|
|
"os/exec"
|
|
"strings"
|
|
|
|
jww "github.com/spf13/jwalterweatherman"
|
|
"github.com/spf13/viper"
|
|
)
|
|
|
|
const pygmentsBin = "pygmentize"
|
|
|
|
// HasPygments checks to see if Pygments is installed and available
|
|
// on the system.
|
|
func HasPygments() bool {
|
|
if _, err := exec.LookPath(pygmentsBin); err != nil {
|
|
return false
|
|
}
|
|
return true
|
|
}
|
|
|
|
// Highlight takes some code and returns highlighted code.
|
|
func Highlight(code string, lexer string) string {
|
|
|
|
if !HasPygments() {
|
|
jww.WARN.Println("Highlighting requires Pygments to be installed and in the path")
|
|
return code
|
|
}
|
|
|
|
var out bytes.Buffer
|
|
var stderr bytes.Buffer
|
|
style := viper.GetString("PygmentsStyle")
|
|
|
|
noclasses := "true"
|
|
if viper.GetBool("PygmentsUseClasses") {
|
|
noclasses = "false"
|
|
}
|
|
|
|
cmd := exec.Command(pygmentsBin, "-l"+lexer, "-fhtml", "-O",
|
|
fmt.Sprintf("style=%s,noclasses=%s,encoding=utf8", style, noclasses))
|
|
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()
|
|
}
|