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mycorrhiza/main.go

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package main
import (
"fmt"
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"github.com/gorilla/mux"
"io/ioutil"
"log"
"net/http"
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"os"
"path/filepath"
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// "strconv"
"time"
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)
func RevInMap(m map[string]string) string {
if val, ok := m["rev"]; ok {
return val
}
return "0"
}
// handlers
func HandlerGetBinary(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
revno := RevInMap(vars)
rev, err := GetRevision(hyphae, vars["hypha"], revno)
if err != nil {
log.Println("Failed to show image of", rev.FullName)
}
fileContents, err := ioutil.ReadFile(rev.BinaryPath)
if err != nil {
log.Println("Failed to show image of", rev.FullName)
}
log.Println("Contents:", fileContents[:10], "...")
w.Header().Set("Content-Type", rev.MimeType)
// w.Header().Set("Content-Length", strconv.Itoa(len(fileContents)))
w.WriteHeader(http.StatusOK)
w.Write(fileContents)
log.Println("Showing image of", rev.FullName)
}
func HandlerRaw(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusNotImplemented)
log.Println("Attempt to access an unimplemented thing")
}
func HandlerZen(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusNotImplemented)
log.Println("Attempt to access an unimplemented thing")
}
func HandlerView(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
rev, err := GetRevision(hyphae, vars["hypha"], "0")
if err != nil {
log.Println("Failed to show image of", rev.FullName)
w.WriteHeader(http.StatusInternalServerError)
return
}
html, err := rev.Render(hyphae)
if err != nil {
log.Println("Failed to show image of", rev.FullName)
w.WriteHeader(http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusOK)
fmt.Fprint(w, HyphaPage(hyphae, rev, html))
log.Println("Rendering", rev.FullName)
}
func HandlerHistory(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusNotImplemented)
log.Println("Attempt to access an unimplemented thing")
}
func HandlerEdit(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusNotImplemented)
log.Println("Attempt to access an unimplemented thing")
}
func HandlerRewind(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusNotImplemented)
log.Println("Attempt to access an unimplemented thing")
}
func HandlerDelete(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusNotImplemented)
log.Println("Attempt to access an unimplemented thing")
}
func HandlerRename(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusNotImplemented)
log.Println("Attempt to access an unimplemented thing")
}
func HandlerUpdate(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusNotImplemented)
log.Println("Attempt to access an unimplemented thing")
}
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var rootWikiDir string
var hyphae map[string]*Hypha
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func hyphaeAsMap(hyphae []*Hypha) map[string]*Hypha {
mh := make(map[string]*Hypha)
for _, h := range hyphae {
mh[h.Name] = h
}
return mh
}
func main() {
if len(os.Args) == 1 {
panic("Expected a root wiki pages directory")
}
// Required so the rootWikiDir hereinbefore does not get redefined.
var err error
rootWikiDir, err = filepath.Abs(os.Args[1])
if err != nil {
panic(err)
}
hyphae = hyphaeAsMap(recurFindHyphae(rootWikiDir))
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setRelations(hyphae)
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// Start server code
r := mux.NewRouter()
r.Queries("action", "getBinary", "rev", revQuery).Path(hyphaUrl).
HandlerFunc(HandlerGetBinary)
r.Queries("action", "getBinary").Path(hyphaUrl).
HandlerFunc(HandlerGetBinary)
r.Queries("action", "raw", "rev", revQuery).Path(hyphaUrl).
HandlerFunc(HandlerRaw)
r.Queries("action", "raw").Path(hyphaUrl).
HandlerFunc(HandlerRaw)
r.Queries("action", "zen", "rev", revQuery).Path(hyphaUrl).
HandlerFunc(HandlerZen)
r.Queries("action", "zen").Path(hyphaUrl).
HandlerFunc(HandlerZen)
r.Queries("action", "view", "rev", revQuery).Path(hyphaUrl).
HandlerFunc(HandlerView)
r.Queries("action", "view").Path(hyphaUrl).
HandlerFunc(HandlerView)
r.Queries("action", "history").Path(hyphaUrl).
HandlerFunc(HandlerHistory)
r.Queries("action", "edit").Path(hyphaUrl).
HandlerFunc(HandlerEdit)
r.Queries("action", "rewind", "rev", revQuery).Path(hyphaUrl).
HandlerFunc(HandlerRewind)
r.Queries("action", "delete").Path(hyphaUrl).
HandlerFunc(HandlerDelete)
r.Queries("action", "rename", "to", hyphaPattern).Path(hyphaUrl).
HandlerFunc(HandlerRename)
r.Queries("action", "update").Path(hyphaUrl).
HandlerFunc(HandlerUpdate)
r.HandleFunc(hyphaUrl, HandlerView)
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r.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "text/html; charset=utf-8")
w.WriteHeader(http.StatusOK)
for _, v := range hyphae {
log.Println("Rendering latest revision of hypha", v.Name)
html, err := v.Render(hyphae, 0)
if err != nil {
fmt.Fprintln(w, err)
}
fmt.Fprintln(w, html)
}
})
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http.Handle("/", r)
srv := &http.Server{
Handler: r,
Addr: "127.0.0.1:8000",
// Good practice: enforce timeouts for servers you create!
WriteTimeout: 15 * time.Second,
ReadTimeout: 15 * time.Second,
}
log.Fatal(srv.ListenAndServe())
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}