302 lines
6.7 KiB
Go
302 lines
6.7 KiB
Go
/* WIP Under Construction */
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package main
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import "log"
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//import "strings"
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import "os"
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var routeList []*RouteImpl
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var routeGroups []*RouteGroup
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func main() {
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log.Println("Generating the router...")
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// Load all the routes...
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routes()
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var out string
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var fileData = "// Code generated by. DO NOT EDIT.\n/* This file was automatically generated by the software. Please don't edit it as your changes may be overwritten at any moment. */\n"
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for _, route := range routeList {
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var end int
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if route.Path[len(route.Path)-1] == '/' {
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end = len(route.Path) - 1
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} else {
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end = len(route.Path) - 1
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}
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out += "\n\t\tcase \"" + route.Path[0:end] + "\":"
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if len(route.RunBefore) > 0 {
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for _, runnable := range route.RunBefore {
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if runnable.Literal {
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out += "\n\t\t\t\t\t" + runnable.Contents
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} else {
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out += `
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err = ` + runnable.Contents + `(w,req,user)
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if err != nil {
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router.handleError(err,w,req,user)
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return
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}
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`
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}
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}
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}
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out += "\n\t\t\terr = " + route.Name + "(w,req,user"
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for _, item := range route.Vars {
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out += "," + item
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}
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out += `)
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if err != nil {
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router.handleError(err,w,req,user)
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}`
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}
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for _, group := range routeGroups {
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var end int
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if group.Path[len(group.Path)-1] == '/' {
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end = len(group.Path) - 1
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} else {
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end = len(group.Path) - 1
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}
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out += `
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case "` + group.Path[0:end] + `":`
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for _, runnable := range group.RunBefore {
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if runnable.Literal {
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out += "\t\t\t" + runnable.Contents
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} else {
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out += `
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err = ` + runnable.Contents + `(w,req,user)
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if err != nil {
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router.handleError(err,w,req,user)
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return
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}
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`
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}
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}
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out += "\n\t\t\tswitch(req.URL.Path) {"
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var defaultRoute = blankRoute()
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for _, route := range group.RouteList {
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if group.Path == route.Path {
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defaultRoute = route
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continue
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}
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out += "\n\t\t\t\tcase \"" + route.Path + "\":"
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if len(route.RunBefore) > 0 {
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for _, runnable := range route.RunBefore {
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if runnable.Literal {
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out += "\n\t\t\t\t\t" + runnable.Contents
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} else {
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out += `
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err = ` + runnable.Contents + `(w,req,user)
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if err != nil {
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router.handleError(err,w,req,user)
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return
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}
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`
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}
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}
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}
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out += "\n\t\t\t\t\terr = " + route.Name + "(w,req,user"
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for _, item := range route.Vars {
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out += "," + item
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}
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out += ")"
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}
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if defaultRoute.Name != "" {
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out += "\n\t\t\t\tdefault:"
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if len(defaultRoute.RunBefore) > 0 {
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for _, runnable := range defaultRoute.RunBefore {
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if runnable.Literal {
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out += "\n\t\t\t\t\t" + runnable.Contents
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} else {
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out += `
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err = ` + runnable.Contents + `(w,req,user)
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if err != nil {
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router.handleError(err,w,req,user)
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return
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}
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`
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}
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}
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}
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out += "\n\t\t\t\t\terr = " + defaultRoute.Name + "(w,req,user"
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for _, item := range defaultRoute.Vars {
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out += ", " + item
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}
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out += ")"
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}
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out += `
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}
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if err != nil {
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router.handleError(err,w,req,user)
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}`
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}
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fileData += `package main
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import "log"
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import "strings"
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import "sync"
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import "errors"
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import "net/http"
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var ErrNoRoute = errors.New("That route doesn't exist.")
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type GenRouter struct {
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UploadHandler func(http.ResponseWriter, *http.Request)
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extra_routes map[string]func(http.ResponseWriter, *http.Request, User) RouteError
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sync.RWMutex
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}
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func NewGenRouter(uploads http.Handler) *GenRouter {
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return &GenRouter{
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UploadHandler: http.StripPrefix("/uploads/",uploads).ServeHTTP,
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extra_routes: make(map[string]func(http.ResponseWriter, *http.Request, User) RouteError),
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}
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}
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func (router *GenRouter) handleError(err RouteError, w http.ResponseWriter, r *http.Request, user User) {
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if err.Handled() {
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return
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}
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if err.Type() == "system" {
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InternalErrorJSQ(err,w,r,err.Json())
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return
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}
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LocalErrorJSQ(err.Error(),w,r,user,err.Json())
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}
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func (router *GenRouter) Handle(_ string, _ http.Handler) {
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}
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func (router *GenRouter) HandleFunc(pattern string, handle func(http.ResponseWriter, *http.Request, User) RouteError) {
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router.Lock()
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router.extra_routes[pattern] = handle
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router.Unlock()
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}
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func (router *GenRouter) RemoveFunc(pattern string) error {
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router.Lock()
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_, ok := router.extra_routes[pattern]
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if !ok {
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router.Unlock()
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return ErrNoRoute
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}
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delete(router.extra_routes,pattern)
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router.Unlock()
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return nil
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}
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func (router *GenRouter) ServeHTTP(w http.ResponseWriter, req *http.Request) {
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//if req.URL.Path == "/" {
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// default_route(w,req)
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// return
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//}
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if len(req.URL.Path) == 0 || req.URL.Path[0] != '/' {
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w.WriteHeader(405)
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w.Write([]byte(""))
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return
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}
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var prefix, extra_data string
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prefix = req.URL.Path[0:strings.IndexByte(req.URL.Path[1:],'/') + 1]
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if req.URL.Path[len(req.URL.Path) - 1] != '/' {
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extra_data = req.URL.Path[strings.LastIndexByte(req.URL.Path,'/') + 1:]
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req.URL.Path = req.URL.Path[:strings.LastIndexByte(req.URL.Path,'/') + 1]
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}
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if dev.SuperDebug {
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log.Print("before routeStatic")
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log.Print("prefix: ", prefix)
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log.Print("req.URL.Path: ", req.URL.Path)
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log.Print("extra_data: ", extra_data)
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log.Print("req.Referer(): ", req.Referer())
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}
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if prefix == "/static" {
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req.URL.Path += extra_data
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routeStatic(w,req)
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return
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}
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if dev.SuperDebug {
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log.Print("before PreRoute")
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}
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// Deal with the session stuff, etc.
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user, ok := PreRoute(w,req)
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if !ok {
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return
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}
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if dev.SuperDebug {
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log.Print("after PreRoute")
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}
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var err RouteError
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switch(prefix) {` + out + `
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case "/uploads":
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if extra_data == "" {
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NotFound(w,req)
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return
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}
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req.URL.Path += extra_data
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// TODO: Find a way to propagate errors up from this?
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router.UploadHandler(w,req)
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case "":
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// Stop the favicons, robots.txt file, etc. resolving to the topics list
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// TODO: Add support for favicons and robots.txt files
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switch(extra_data) {
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case "robots.txt":
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err = routeRobotsTxt(w,req)
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if err != nil {
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router.handleError(err,w,req,user)
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}
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return
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}
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if extra_data != "" {
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NotFound(w,req)
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return
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}
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config.DefaultRoute(w,req,user)
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default:
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// A fallback for the routes which haven't been converted to the new router yet or plugins
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router.RLock()
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handle, ok := router.extra_routes[req.URL.Path]
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router.RUnlock()
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if ok {
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req.URL.Path += extra_data
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err = handle(w,req,user)
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if err != nil {
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router.handleError(err,w,req,user)
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}
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return
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}
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NotFound(w,req)
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}
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}
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`
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writeFile("./gen_router.go", fileData)
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log.Println("Successfully generated the router")
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}
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func writeFile(name string, content string) {
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f, err := os.Create(name)
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if err != nil {
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log.Fatal(err)
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}
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_, err = f.WriteString(content)
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if err != nil {
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log.Fatal(err)
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}
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f.Sync()
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f.Close()
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}
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