Created
March 24, 2021 08:45
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server for html parsing with readability
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package main | |
import ( | |
"fmt" | |
"net/http" | |
"github.com/recoilme/clean" | |
. "github.com/stevelacy/daz" | |
) | |
func main() { | |
http.HandleFunc("/", mainHandler) | |
fmt.Println("listening on :8081") | |
http.ListenAndServe(":8081", nil) | |
} | |
func mainHandler(w http.ResponseWriter, r *http.Request) { | |
title := "Example Server" | |
meta := []func() string{ | |
H("meta", Attr{"charset": "UTF-8"}), | |
H("meta", Attr{ | |
"name": "viewport", | |
"content": "width=device-width, initial-scale=1.0", | |
}), | |
} | |
css := `body{padding:1rem;margin:auto;max-width:46rem;font-family:pt serif,Georgia,Cambria,times new roman,Times,serif;line-height:1.5;font-size:20px;color:rgba(0,0,0,.87);-webkit-font-smoothing:antialiased;font-weight:300}nav{display:flex;justify-content:space-between;align-items:center;margin:1em 0 3em}nav ul,nav li{display:inline-block;list-style:none;margin:0 0 0 .5rem;padding:0}nav ul{margin-right:1rem}.logo{background-color:rgba(0,0,0,.87);color:#fff;min-width:48px;min-height:48px;font-size:28px;border-radius:2px;display:flex;justify-content:center;align-items:center}.logo:hover{color:#fff}h1,h2{line-height:1.2;font-family:roboto,system-ui,segoe ui,Helvetica,Arial,sans-serif;font-weight:400;text-transform:uppercase;margin:1.34em 0 0}h1{font-size:1.95em}h2{font-size:1.25em;border-bottom:2px solid rgba(0,0,0,.87)}h1 a{color:rgba(0,0,0,.87)}p{margin:.67em 0 1em}a{color:#0076df;text-decoration:none;word-break:break-word}a:hover{color:rgba(0,0,0,.87)}ul,ol{list-style-position:outside;margin-left:1em}img{display:block;margin-left:auto;margin-right:auto;max-width:100%}pre,code{font-family:roboto mono,SFMono-Regular,Consolas,liberation mono,Menlo,monospace;font-weight:400;font-size:18px;color:rgba(0,0,0,.6);background:#eee}code{padding:.2rem .4rem;font-size:14px;border-radius:2px}pre{overflow-y:auto;line-height:20px;border-radius:2px;padding:1em}pre code{font-size:14px;padding:0;color:rgba(0,0,0,.87)}footer{font-size:12px}@media(prefers-color-scheme:dark){.logo{color:#444;background-color:#e4e4e4}.logo:hover{color:#444}body,h1 a,h2 a{background-color:#444;color:#e4e4e4}pre,pre code{background:#333;color:#e4e4e4}h2{border-bottom:1px solid #e4e4e4}code{color:#aaa;background:#333}a{color:#e39777}a:hover{color:#e4e4e4}img{filter:grayscale(30%)}}.hl{display:block;width:100%;background-color:#ffc}.ow,.gh,.gp,.gs,.gu,.nt,.nn,.ne,.ni,.nc,.kr,.kn,.kd,.kc,.k{font-weight:700}.c,.ch,.cm,.c1,.cs,.ge{color:#777}` | |
style := H("style", Attr{ | |
"type": "text/css", | |
}, css) | |
head := H("head", H("title", title), meta, "\n", style) | |
inputs := []func() string{ | |
H("input", Attr{ | |
"type": "text", | |
"size": "40", | |
"name": "url", | |
"value": "", | |
}), | |
H("input", Attr{ | |
"type": "submit", | |
"value": "Go!", | |
}), | |
} | |
form := H("form", Attr{"method": "GET"}, "URL: ", inputs) | |
u := r.URL | |
link := u.Query().Get("url") | |
body := H( | |
"body", | |
form, | |
) | |
if link != "" { | |
content, err := clean.URI(link, true) | |
if err != nil { | |
body = H( | |
"body", | |
form, | |
err.Error(), | |
) | |
} else { | |
body = H( | |
"body", | |
form, | |
func() string { return content }, | |
) | |
} | |
} | |
html := H("html", head, "\n", body) | |
w.Write([]byte(html())) | |
} |
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