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
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
package static
import (
"bytes"
"fmt"
"io"
"io/fs"
"mime"
"net/http"
"path/filepath"
"git.gabrielgio.me/cerrado/pkg/ext"
"git.gabrielgio.me/cerrado/static"
"github.com/alecthomas/chroma/v2"
"github.com/alecthomas/chroma/v2/formatters/html"
"github.com/alecthomas/chroma/v2/styles"
)
func ServeStaticHandler() (ext.ErrorRequestHandler, error) {
staticFs, err := fs.Sub(static.Static, ".")
if err != nil {
return nil, err
}
return func(w http.ResponseWriter, r *ext.Request) error {
var (
f = r.PathValue("file")
e = filepath.Ext(f)
m = mime.TypeByExtension(e)
)
ext.SetMIME(w, m)
w.Header().Add("Cache-Control", "max-age=31536000")
http.ServeFileFS(w, r.Request, staticFs, f)
return nil
}, nil
}
func ServeStaticCSSHandler(lightTheme, darkTheme string) (ext.ErrorRequestHandler, error) {
var (
lightStyle = styles.Get(lightTheme)
darkStyle = styles.Get(darkTheme)
formatter = html.New(
html.WithCSSComments(false),
)
)
return func(w http.ResponseWriter, r *ext.Request) error {
ext.SetMIME(w, "text/css")
w.Header().Add("Cache-Control", "max-age=31536000")
// use buffer so this function can fail before writing to http.ResponseWriter
var buffer bytes.Buffer
var style *chroma.Style
style = darkStyle
buffer.Write([]byte("[data-bs-theme=\"dark\"] {\n"))
err := formatter.WriteCSS(&ws{&buffer}, style)
if err != nil {
return err
}
buffer.Write([]byte("}\n"))
style = lightStyle
buffer.Write([]byte("[data-bs-theme=\"light\"] {\n"))
err = formatter.WriteCSS(&ws{&buffer}, style)
if err != nil {
return err
}
buffer.Write([]byte("}"))
_, err = io.Copy(w, &buffer)
if err != nil {
return err
}
return nil
}, nil
}
type ws struct {
inner io.Writer
}
// This is very cursed, and rely on the fact that it writes every css rule at time.
// it adds & to the begging so it can be nested by the ServeStaticCSSHandler.
// This will allow the follow bootstrap data-bs-theme.
func (w *ws) Write(p []byte) (n int, err error) {
return fmt.Fprintf(w.inner, "& %s", string(p))
}
|
