Duc-Tam Nguyen
fafa3dfa51
BuildZIM walks a cloned host directory, turns every file into a content entry with a MIME inferred from its extension, picks a main page, and adds the standard metadata plus a mainPage redirect. state.json is skipped. BuildBinary appends the archive to a copy of kage behind a KAGEPCK1 trailer, and Embedded detects that trailer at startup so the binary serves itself. Handler maps / to the main page and /path to a content entry, the same handler the embedded viewer uses.
63 lines
1.5 KiB
Go
63 lines
1.5 KiB
Go
package pack
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import (
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"errors"
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"net/http"
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"os/exec"
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"runtime"
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"strings"
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"github.com/tamnd/kage/zim"
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)
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// Handler serves a ZIM archive over HTTP. "/" maps to the archive's main page;
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// "/a/b.png" maps to the C/a/b.png content entry. Because the saved HTML's links
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// are mirror-relative paths, and those are exactly the C urls, a click in a
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// served page hits the right entry with no rewriting. A miss is a plain 404.
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func Handler(r *zim.Reader) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
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p := strings.TrimPrefix(req.URL.Path, "/")
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if p == "" {
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blob, err := r.MainPage()
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if err != nil {
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http.NotFound(w, req)
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return
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}
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serveBlob(w, blob)
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return
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}
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blob, err := r.Get(zim.NamespaceContent, p)
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if errors.Is(err, zim.ErrNotFound) {
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http.NotFound(w, req)
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return
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}
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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serveBlob(w, blob)
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})
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}
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func serveBlob(w http.ResponseWriter, b zim.Blob) {
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if b.MimeType != "" {
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w.Header().Set("Content-Type", b.MimeType)
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}
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_, _ = w.Write(b.Data)
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}
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// OpenInBrowser launches the platform default browser at url. It is best-effort:
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// callers print the url regardless and never treat a launch failure as fatal.
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func OpenInBrowser(url string) error {
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var cmd *exec.Cmd
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switch runtime.GOOS {
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case "darwin":
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cmd = exec.Command("open", url)
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case "windows":
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cmd = exec.Command("rundll32", "url.dll,FileProtocolHandler", url)
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default:
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cmd = exec.Command("xdg-open", url)
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}
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return cmd.Start()
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}
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