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This commit is contained in:
Daniil Gentili 2022-01-06 20:42:55 +01:00
parent 2c98907303
commit 46f3fff6e1
Signed by: danog
GPG Key ID: 8C1BE3B34B230CA7
3 changed files with 55 additions and 19 deletions
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6
go.mod
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@ -1 +1,7 @@
module github.com/danog/blackfriday/v2
go 1.17
require github.com/alecthomas/chroma v0.9.4
require github.com/dlclark/regexp2 v1.4.0 // indirect

15
go.sum Normal file
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@ -0,0 +1,15 @@
github.com/alecthomas/chroma v0.9.4 h1:YL7sOAE3p8HS96T9km7RgvmsZIctqbK1qJ0b7hzed44=
github.com/alecthomas/chroma v0.9.4/go.mod h1:jtJATyUxlIORhUOFNA9NZDWGAQ8wpxQQqNSB4rjA/1s=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/dlclark/regexp2 v1.4.0 h1:F1rxgk7p4uKjwIQxBs9oAXe5CqrXlCduYEJvrF4u93E=
github.com/dlclark/regexp2 v1.4.0/go.mod h1:2pZnwuY/m+8K6iRw6wQdMtk+rH5tNGR1i55kozfMjCc=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

53
html.go
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@ -19,10 +19,13 @@ import (
"bytes"
"fmt"
"io"
"os"
"os/exec"
"regexp"
"strings"
"github.com/alecthomas/chroma"
"github.com/alecthomas/chroma/formatters/html"
"github.com/alecthomas/chroma/lexers"
"github.com/alecthomas/chroma/styles"
)
// HTMLFlags control optional behavior of HTML renderer.
@ -769,25 +772,37 @@ func (r *HTMLRenderer) RenderNode(w io.Writer, node *Node, entering bool) WalkSt
r.cr(w)
r.tag(w, divTag[:len(divTag)-1], attrs)
r.tag(w, divTag[:len(divTag)-1], []string{`class="highlight"`})
r.tag(w, preTag[:len(preTag)-1], []string{`class="highlight"`})
r.out(w, codeTag)
buf := new(bytes.Buffer)
args := []string{"highlight", "-f", "html"}
if lang != "" {
args = append(args, "-l", lang)
}
cmd := exec.Command("rougify", args...) // nolint: gas
cmd.Stdin = strings.NewReader(string(node.Literal))
cmd.Stdout = buf
cmd.Stderr = os.Stderr
if e := cmd.Run(); e != nil {
panic(e)
}
r.out(w, buf.Bytes())
source := string(node.Literal)
// Determine lexer.
l := lexers.Get(lang)
if l == nil {
l = lexers.Analyse(source)
}
if l == nil {
l = lexers.Fallback
}
l = chroma.Coalesce(l)
// Determine formatter.
f := html.New(html.WithClasses(true))
// Determine style.
s := styles.Get("")
if s == nil {
s = styles.Fallback
}
it, err := l.Tokenise(nil, source)
if err != nil {
panic(err)
}
if err = f.Format(w, s, it); err != nil {
panic(err)
}
r.out(w, codeCloseTag)
r.out(w, preCloseTag)
r.out(w, divCloseTag)
r.out(w, divCloseTag)