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multiplexer.go
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/
multiplexer.go
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package serverHandler
import (
"../param"
"../serverErrHandler"
"../serverLog"
"../tpl"
"../user"
"../util"
"net/http"
)
var defaultHandler = http.NotFoundHandler()
type aliasHandler struct {
alias alias
handler http.Handler
}
type multiplexer struct {
aliasHandlers []aliasHandler
}
func (mux multiplexer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
rawReqPath := util.CleanUrlPath(r.URL.Path)
for _, aliasHandler := range mux.aliasHandlers {
if aliasHandler.alias.isMatch(rawReqPath) || aliasHandler.alias.isPredecessorOf(rawReqPath) {
aliasHandler.handler.ServeHTTP(w, r)
return
}
}
defaultHandler.ServeHTTP(w, r)
}
func NewMultiplexer(
p *param.Param,
users user.Users,
theme tpl.Theme,
logger *serverLog.Logger,
errHandler *serverErrHandler.ErrHandler,
) http.Handler {
aliases := newAliases(p.Aliases, p.Binds)
if len(aliases) == 0 {
return defaultHandler
}
if len(aliases) == 1 {
alias, hasRootAlias := aliases.byUrlPath("/")
if hasRootAlias {
return newHandler(p, alias.fsPath(), alias.urlPath(), aliases, users, theme, logger, errHandler)
}
}
aliasHandlers := make([]aliasHandler, len(aliases))
for i, alias := range aliases {
aliasHandlers[i] = aliasHandler{
alias: alias,
handler: newHandler(p, alias.fsPath(), alias.urlPath(), aliases, users, theme, logger, errHandler),
}
}
return multiplexer{aliasHandlers}
}