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utils.go
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/
utils.go
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package main
import (
"bufio"
"net/http"
"os"
)
func CORS(next http.HandlerFunc) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
w.Header().Add("Access-Control-Allow-Origin", "*")
w.Header().Add("Access-Control-Allow-Credentials", "true")
w.Header().Add("Access-Control-Allow-Headers", "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With")
w.Header().Add("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, DELETE")
if r.Method == "OPTIONS" {
http.Error(w, "No Content", http.StatusNoContent)
return
}
next(w, r)
}
}
func readFromFile(fileName string) ([]string, error) {
file, err := os.Open(fileName)
if err != nil {
return nil, err
}
defer file.Close()
var lines []string
scanner := bufio.NewScanner(file)
for scanner.Scan() {
lines = append(lines, scanner.Text())
}
return lines, scanner.Err()
}