1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
// 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"
func HasPygments() bool {
if _, err := exec.LookPath(pygmentsBin); err != nil {
return false
}
return true
}
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()
}
|
