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mycorrhiza/main.go
2020-08-19 23:54:23 +05:00

158 lines
4.3 KiB
Go

package main
import (
"fmt"
"log"
"net/http"
"os"
"path/filepath"
"regexp"
"github.com/bouncepaw/mycorrhiza/history"
"github.com/bouncepaw/mycorrhiza/util"
)
// WikiDir is a rooted path to the wiki storage directory.
var WikiDir string
// HyphaPattern is a pattern which all hyphae must match. Not used currently.
var HyphaPattern = regexp.MustCompile(`[^?!:#@><*|"\'&%]+`)
// HyphaStorage is a mapping between canonical hypha names and their meta information.
var HyphaStorage = make(map[string]*HyphaData)
// IterateHyphaNamesWith is a closure to be passed to subpackages to let them iterate all hypha names read-only.
func IterateHyphaNamesWith(f func(string)) {
for hyphaName, _ := range HyphaStorage {
f(hyphaName)
}
}
// HttpErr is used by many handlers to signal errors in a compact way.
func HttpErr(w http.ResponseWriter, status int, name, title, errMsg string) {
log.Println(errMsg, "for", name)
w.Header().Set("Content-Type", "text/html;charset=utf-8")
w.WriteHeader(status)
fmt.Fprint(w, base(title, fmt.Sprintf(
`<p>%s. <a href="/page/%s">Go back to the hypha.<a></p>`,
errMsg, name)))
}
// shorterPath is used by handlerList to display shorter path to the files. It simply strips WikiDir. It was moved to util package, this is an alias. TODO: demolish.
var shorterPath = util.ShorterPath
// Show all hyphae
func handlerList(w http.ResponseWriter, rq *http.Request) {
log.Println(rq.URL)
w.Header().Set("Content-Type", "text/html;charset=utf-8")
w.WriteHeader(http.StatusOK)
buf := `
<h1>List of pages</h1>
<table>
<thead>
<tr>
<th>Name</th>
<th>Text path</th>
<th>Text type</th>
<th>Binary path</th>
<th>Binary type</th>
</tr>
</thead>
<tbody>`
for name, data := range HyphaStorage {
buf += fmt.Sprintf(`
<tr>
<td><a href="/page/%s">%s</a></td>
<td>%s</td>
<td>%d</td>
<td>%s</td>
<td>%d</td>
</tr>`,
name, name,
shorterPath(data.textPath), data.textType,
shorterPath(data.binaryPath), data.binaryType,
)
}
buf += `
</tbody>
</table>
`
w.Write([]byte(base("List of pages", buf)))
}
// This part is present in all html documents.
func base(title, body string) string {
return fmt.Sprintf(`
<!doctype html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" type="text/css" href="/static/common.css">
<title>%s</title>
</head>
<body>
%s
</body>
</html>
`, title, body)
}
// Reindex all hyphae by checking the wiki storage directory anew.
func handlerReindex(w http.ResponseWriter, rq *http.Request) {
log.Println(rq.URL)
HyphaStorage = make(map[string]*HyphaData)
log.Println("Wiki storage directory is", WikiDir)
log.Println("Start indexing hyphae...")
Index(WikiDir)
log.Println("Indexed", len(HyphaStorage), "hyphae")
}
func handlerListCommits(w http.ResponseWriter, rq *http.Request) {
log.Println(rq.URL)
w.Header().Set("Content-Type", "text/html;charset=utf-8")
w.WriteHeader(http.StatusOK)
w.Write([]byte(history.CommitsTable()))
}
func handlerStatus(w http.ResponseWriter, rq *http.Request) {
log.Println(rq.URL)
w.Header().Set("Content-Type", "text/html;charset=utf-8")
w.WriteHeader(http.StatusOK)
w.Write([]byte(history.StatusTable()))
}
func main() {
log.Println("Running MycorrhizaWiki β")
var err error
WikiDir, err = filepath.Abs(os.Args[1])
util.WikiDir = WikiDir
if err != nil {
log.Fatal(err)
}
if err := os.Chdir(WikiDir); err != nil {
log.Fatal(err)
}
log.Println("Wiki storage directory is", WikiDir)
log.Println("Start indexing hyphae...")
Index(WikiDir)
log.Println("Indexed", len(HyphaStorage), "hyphae")
history.Start(WikiDir)
http.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.Dir(WikiDir+"/static"))))
// See http_readers.go for /page/, /text/, /binary/, /history/.
// See http_mutators.go for /upload-binary/, /upload-text/, /edit/.
http.HandleFunc("/list", handlerList)
http.HandleFunc("/reindex", handlerReindex)
http.HandleFunc("/git/list", handlerListCommits)
http.HandleFunc("/git/status", handlerStatus)
http.HandleFunc("/favicon.ico", func(w http.ResponseWriter, rq *http.Request) {
http.ServeFile(w, rq, WikiDir+"/static/favicon.ico")
})
http.HandleFunc("/", func(w http.ResponseWriter, rq *http.Request) {
http.Redirect(w, rq, "/page/home", http.StatusSeeOther)
})
log.Fatal(http.ListenAndServe("0.0.0.0:1737", nil))
}