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module github.com/tschaub/host | ||
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go 1.21.0 | ||
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require ( | ||
github.com/alecthomas/kong v0.8.0 | ||
github.com/rs/cors v1.9.0 | ||
) |
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github.com/alecthomas/assert/v2 v2.1.0 h1:tbredtNcQnoSd3QBhQWI7QZ3XHOVkw1Moklp2ojoH/0= | ||
github.com/alecthomas/assert/v2 v2.1.0/go.mod h1:b/+1DI2Q6NckYi+3mXyH3wFb8qG37K/DuK80n7WefXA= | ||
github.com/alecthomas/kong v0.8.0 h1:ryDCzutfIqJPnNn0omnrgHLbAggDQM2VWHikE1xqK7s= | ||
github.com/alecthomas/kong v0.8.0/go.mod h1:n1iCIO2xS46oE8ZfYCNDqdR0b0wZNrXAIAqro/2132U= | ||
github.com/alecthomas/repr v0.1.0 h1:ENn2e1+J3k09gyj2shc0dHr/yjaWSHRlrJ4DPMevDqE= | ||
github.com/alecthomas/repr v0.1.0/go.mod h1:2kn6fqh/zIyPLmm3ugklbEi5hg5wS435eygvNfaDQL8= | ||
github.com/hexops/gotextdiff v1.0.3 h1:gitA9+qJrrTCsiCl7+kh75nPqQt1cx4ZkudSTLoUqJM= | ||
github.com/hexops/gotextdiff v1.0.3/go.mod h1:pSWU5MAI3yDq+fZBTazCSJysOMbxWL1BSow5/V2vxeg= | ||
github.com/rs/cors v1.9.0 h1:l9HGsTsHJcvW14Nk7J9KFz8bzeAWXn3CG6bgt7LsrAE= | ||
github.com/rs/cors v1.9.0/go.mod h1:XyqrcTp5zjWr1wsJ8PIRZssZ8b/WMcMf71DJnit4EMU= |
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<!DOCTYPE html> | ||
<html> | ||
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<head> | ||
<meta charSet="utf-8"> | ||
<title>Index of {{.Dir}}</title> | ||
<style> | ||
:root { | ||
--body-bg: #FFFFFF; | ||
--body-color: #4B4B4B; | ||
} | ||
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ul a.file::before { | ||
content: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" width="20" height="20" viewBox="0 0 50 50"><path fill="%234B4B4B" d="M 7 2 L 7 48 L 43 48 L 43 14.59375 L 42.71875 14.28125 L 30.71875 2.28125 L 30.40625 2 Z M 9 4 L 29 4 L 29 16 L 41 16 L 41 46 L 9 46 Z M 31 5.4375 L 39.5625 14 L 31 14 Z"></path></svg>'); | ||
} | ||
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ul a.folder::before { | ||
content: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" width="20" height="20" viewBox="0 0 50 50"><path fill="%234B4B4B" d="M 5 4 C 3.3550302 4 2 5.3550302 2 7 L 2 16 L 2 18 L 2 43 C 2 44.64497 3.3550302 46 5 46 L 45 46 C 46.64497 46 48 44.64497 48 43 L 48 19 L 48 16 L 48 11 C 48 9.3550302 46.64497 8 45 8 L 18 8 C 18.08657 8 17.96899 8.000364 17.724609 7.71875 C 17.480227 7.437136 17.179419 6.9699412 16.865234 6.46875 C 16.55105 5.9675588 16.221777 5.4327899 15.806641 4.9628906 C 15.391504 4.4929914 14.818754 4 14 4 L 5 4 z M 5 6 L 14 6 C 13.93925 6 14.06114 6.00701 14.308594 6.2871094 C 14.556051 6.5672101 14.857231 7.0324412 15.169922 7.53125 C 15.482613 8.0300588 15.806429 8.562864 16.212891 9.03125 C 16.619352 9.499636 17.178927 10 18 10 L 45 10 C 45.56503 10 46 10.43497 46 11 L 46 13.1875 C 45.685108 13.07394 45.351843 13 45 13 L 5 13 C 4.6481575 13 4.3148915 13.07394 4 13.1875 L 4 7 C 4 6.4349698 4.4349698 6 5 6 z M 5 15 L 45 15 C 45.56503 15 46 15.43497 46 16 L 46 19 L 46 43 C 46 43.56503 45.56503 44 45 44 L 5 44 C 4.4349698 44 4 43.56503 4 43 L 4 18 L 4 16 C 4 15.43497 4.4349698 15 5 15 z"></path></svg>'); | ||
} | ||
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@media (prefers-color-scheme: dark) { | ||
:root { | ||
--body-bg: #0d0d0d; | ||
--body-color: #FFFFFF; | ||
} | ||
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ul a.file::before { | ||
content: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" width="20" height="20" viewBox="0 0 50 50"><path fill="%23FFFFFF" d="M 7 2 L 7 48 L 43 48 L 43 14.59375 L 42.71875 14.28125 L 30.71875 2.28125 L 30.40625 2 Z M 9 4 L 29 4 L 29 16 L 41 16 L 41 46 L 9 46 Z M 31 5.4375 L 39.5625 14 L 31 14 Z"></path></svg>'); | ||
} | ||
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ul a.folder::before { | ||
content: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" width="20" height="20" viewBox="0 0 50 50"><path fill="%23FFFFFF" d="M 5 4 C 3.3550302 4 2 5.3550302 2 7 L 2 16 L 2 18 L 2 43 C 2 44.64497 3.3550302 46 5 46 L 45 46 C 46.64497 46 48 44.64497 48 43 L 48 19 L 48 16 L 48 11 C 48 9.3550302 46.64497 8 45 8 L 18 8 C 18.08657 8 17.96899 8.000364 17.724609 7.71875 C 17.480227 7.437136 17.179419 6.9699412 16.865234 6.46875 C 16.55105 5.9675588 16.221777 5.4327899 15.806641 4.9628906 C 15.391504 4.4929914 14.818754 4 14 4 L 5 4 z M 5 6 L 14 6 C 13.93925 6 14.06114 6.00701 14.308594 6.2871094 C 14.556051 6.5672101 14.857231 7.0324412 15.169922 7.53125 C 15.482613 8.0300588 15.806429 8.562864 16.212891 9.03125 C 16.619352 9.499636 17.178927 10 18 10 L 45 10 C 45.56503 10 46 10.43497 46 11 L 46 13.1875 C 45.685108 13.07394 45.351843 13 45 13 L 5 13 C 4.6481575 13 4.3148915 13.07394 4 13.1875 L 4 7 C 4 6.4349698 4.4349698 6 5 6 z M 5 15 L 45 15 C 45.56503 15 46 15.43497 46 16 L 46 19 L 46 43 C 46 43.56503 45.56503 44 45 44 L 5 44 C 4.4349698 44 4 43.56503 4 43 L 4 18 L 4 16 C 4 15.43497 4.4349698 15 5 15 z"></path></svg>'); | ||
} | ||
} | ||
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body { | ||
margin: 0; | ||
padding: 30px; | ||
background: var(--body-bg); | ||
color: var(--body-color); | ||
font-family: sans-serif; | ||
} | ||
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header { | ||
display: flex; | ||
justify-content: space-between; | ||
flex-wrap: wrap; | ||
} | ||
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h1 { | ||
font-size: 16px; | ||
} | ||
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a { | ||
color: var(--body-color); | ||
text-decoration: none; | ||
} | ||
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a:hover { | ||
text-decoration: underline; | ||
} | ||
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ul { | ||
display: flex; | ||
flex-wrap: wrap; | ||
} | ||
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ul li { | ||
width: 230px; | ||
padding-right: 20px; | ||
} | ||
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ul a { | ||
padding: 10px 5px; | ||
white-space: nowrap; | ||
overflow: hidden; | ||
display: block; | ||
width: 100%; | ||
text-overflow: ellipsis; | ||
} | ||
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ul { | ||
margin: 0; | ||
padding: 20px 0; | ||
} | ||
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ul li { | ||
list-style: none; | ||
font-size: 14px; | ||
display: flex; | ||
justify-content: space-between; | ||
} | ||
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ul a::before { | ||
vertical-align: middle; | ||
margin-right: 10px; | ||
} | ||
</style> | ||
</head> | ||
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<body> | ||
<header> | ||
<h1> | ||
Index of | ||
{{range $i, $e := .Parents}}{{if $i}}/{{end}}<a href="{{$e.Path}}">{{$e.Name}}</a>{{end}} | ||
</h1> | ||
</header> | ||
<ul> | ||
{{range .Entries}} | ||
<li> | ||
<a href="{{.Path}}" class="{{.Type}}">{{.Name}}</a> | ||
</li> | ||
{{end}} | ||
</ul> | ||
</body> | ||
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</html> |
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# License for host | ||
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The host module is distributed under the MIT license. Find the full source | ||
here: http://tschaub.mit-license.org/ | ||
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Copyright Tim Schaub. | ||
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Permission is hereby granted, free of charge, to any person obtaining a copy of | ||
this software and associated documentation files (the “Software”), to deal in | ||
the Software without restriction, including without limitation the rights to | ||
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of | ||
the Software, and to permit persons to whom the Software is furnished to do so, | ||
subject to the following conditions: | ||
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The above copyright notice and this permission notice shall be included in all | ||
copies or substantial portions of the Software. | ||
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THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS | ||
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR | ||
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER | ||
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | ||
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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package main | ||
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import ( | ||
_ "embed" | ||
"errors" | ||
"fmt" | ||
"html/template" | ||
"net/http" | ||
"os" | ||
"path" | ||
"path/filepath" | ||
"sort" | ||
"strings" | ||
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"github.com/alecthomas/kong" | ||
"github.com/rs/cors" | ||
) | ||
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func main() { | ||
ctx := kong.Parse(&ServeCmd{}, kong.UsageOnError()) | ||
err := ctx.Run() | ||
ctx.FatalIfErrorf(err) | ||
} | ||
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type ServeCmd struct { | ||
Port int `help:"Listen on this port." default:"4000"` | ||
Dir string `help:"Serve files from this directory." arg:"" type:"existingdir"` | ||
Cors bool `help:"Include CORS support (on by default)." default:"true" negatable:""` | ||
Dot bool `help:"Serve dot files (files prefixed with a '.')" default:"false"` | ||
} | ||
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func (c *ServeCmd) Run() error { | ||
server := &Server{ | ||
dir: c.Dir, | ||
port: c.Port, | ||
cors: c.Cors, | ||
dot: c.Dot, | ||
} | ||
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return server.Start() | ||
} | ||
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type Server struct { | ||
dir string | ||
port int | ||
cors bool | ||
dot bool | ||
} | ||
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func excludeDot(handler http.Handler) http.Handler { | ||
return http.HandlerFunc(func(response http.ResponseWriter, request *http.Request) { | ||
parts := strings.Split(request.URL.Path, "/") | ||
for _, part := range parts { | ||
if strings.HasPrefix(part, ".") { | ||
http.NotFound(response, request) | ||
return | ||
} | ||
} | ||
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handler.ServeHTTP(response, request) | ||
}) | ||
} | ||
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type IndexData struct { | ||
Dir string | ||
Parents []*Entry | ||
Entries []*Entry | ||
} | ||
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type Entry struct { | ||
Name string | ||
Path string | ||
Type string | ||
} | ||
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const ( | ||
fileType = "file" | ||
folderType = "folder" | ||
) | ||
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//go:embed index.html | ||
var indexHtml string | ||
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func withIndex(dir string, dot bool, handler http.Handler) http.Handler { | ||
indexTemplate := template.Must(template.New("index").Parse(indexHtml)) | ||
base := filepath.Base(dir) | ||
return http.HandlerFunc(func(response http.ResponseWriter, request *http.Request) { | ||
urlPath := request.URL.Path | ||
if !strings.HasSuffix(urlPath, "/") { | ||
handler.ServeHTTP(response, request) | ||
return | ||
} | ||
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dirPath := filepath.Join(dir, urlPath) | ||
list, dirErr := os.ReadDir(dirPath) | ||
if dirErr != nil { | ||
if errors.Is(dirErr, os.ErrNotExist) { | ||
http.NotFound(response, request) | ||
return | ||
} | ||
http.Error(response, dirErr.Error(), http.StatusInternalServerError) | ||
return | ||
} | ||
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entries := []*Entry{} | ||
for _, item := range list { | ||
name := item.Name() | ||
if !dot && strings.HasPrefix(name, ".") { | ||
continue | ||
} | ||
entry := &Entry{ | ||
Name: name, | ||
Path: path.Join(urlPath, name), | ||
} | ||
if item.IsDir() { | ||
entry.Type = folderType | ||
entry.Path = entry.Path + "/" | ||
} else { | ||
entry.Type = fileType | ||
} | ||
entries = append(entries, entry) | ||
} | ||
sort.Slice(entries, func(i int, j int) bool { | ||
iEntry := entries[i] | ||
jEntry := entries[j] | ||
if iEntry.Type == folderType && jEntry.Type != folderType { | ||
return true | ||
} | ||
if jEntry.Type == folderType && iEntry.Type != folderType { | ||
return false | ||
} | ||
return iEntry.Name < jEntry.Name | ||
}) | ||
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if urlPath != "/" { | ||
parentEntry := &Entry{ | ||
Name: "..", | ||
Path: path.Join(urlPath, ".."), | ||
Type: folderType, | ||
} | ||
entries = append([]*Entry{parentEntry}, entries...) | ||
} | ||
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parentParts := strings.Split(urlPath, "/") | ||
parentParts = parentParts[:len(parentParts)-1] | ||
parentEntries := make([]*Entry, len(parentParts)) | ||
for i, part := range parentParts { | ||
entry := &Entry{ | ||
Name: part, | ||
Path: strings.Join(parentParts[:i+1], "/") + "/", | ||
Type: folderType, | ||
} | ||
if part == "" { | ||
entry.Name = base | ||
} | ||
parentEntries[i] = entry | ||
} | ||
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data := &IndexData{ | ||
Dir: filepath.Join(base, urlPath), | ||
Entries: entries, | ||
Parents: parentEntries, | ||
} | ||
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response.WriteHeader(http.StatusOK) | ||
if err := indexTemplate.Execute(response, data); err != nil { | ||
fmt.Printf("trouble executing template: %s\n", err) | ||
} | ||
}) | ||
} | ||
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func (s *Server) Start() error { | ||
mux := http.NewServeMux() | ||
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dir := http.Dir(s.dir) | ||
mux.Handle("/", http.FileServer(dir)) | ||
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handler := withIndex(string(dir), s.dot, http.Handler(mux)) | ||
if !s.dot { | ||
handler = excludeDot(handler) | ||
} | ||
if s.cors { | ||
handler = cors.Default().Handler(handler) | ||
} | ||
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fmt.Printf("Serving %s on http://localhost:%d/\n", s.dir, s.port) | ||
return http.ListenAndServe(fmt.Sprintf(":%d", s.port), handler) | ||
} |
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# host | ||
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Serve files via HTTP. | ||
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``` | ||
Usage: host <dir> | ||
Arguments: | ||
<dir> Serve files from this directory. | ||
Flags: | ||
-h, --help Show context-sensitive help. | ||
--port=4000 Listen on this port. | ||
--[no-]cors Include CORS support (on by default). | ||
--dot Serve dot files (files prefixed with a '.') | ||
``` |