mirror of https://github.com/jlelse/GoBlog
49 lines
910 B
Go
49 lines
910 B
Go
package main
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import (
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"net/http"
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"regexp"
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)
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var regexRedirects []*regexRedirect
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type regexRedirect struct {
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From *regexp.Regexp
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To string
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Type int
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}
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func initRegexRedirects() error {
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for _, cr := range appConfig.PathRedirects {
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re, err := regexp.Compile(cr.From)
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if err != nil {
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return err
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}
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regexRedirects = append(regexRedirects, ®exRedirect{
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From: re,
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To: cr.To,
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Type: cr.Type,
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})
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}
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return nil
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}
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func checkRegexRedirects(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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oldPath := r.URL.Path
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for _, re := range regexRedirects {
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newPath := re.From.ReplaceAllString(oldPath, re.To)
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if oldPath != newPath {
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r.URL.Path = newPath
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code := re.Type
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if code == 0 {
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code = http.StatusFound
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}
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http.Redirect(w, r, r.URL.String(), code)
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return
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}
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}
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next.ServeHTTP(w, r)
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})
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}
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