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mycorrhiza/util/util.go
2021-02-17 23:41:35 +05:00

72 lines
1.8 KiB
Go

package util
import (
"crypto/rand"
"encoding/hex"
"net/http"
"regexp"
"strings"
)
var (
URL string
ServerPort string
HomePage string
SiteNavIcon string
SiteName string
WikiDir string
UserHypha string
HeaderLinksHypha string
AuthMethod string
FixedCredentialsPath string
GeminiCertPath string
)
// ShorterPath is used by handlerList to display shorter path to the files. It simply strips WikiDir.
func ShorterPath(path string) string {
if strings.HasPrefix(path, WikiDir) {
tmp := strings.TrimPrefix(path, WikiDir)
if tmp == "" {
return ""
}
return tmp[1:]
}
return path
}
// HTTP200Page wraps some frequently used things for successful 200 responses.
func HTTP200Page(w http.ResponseWriter, page string) {
w.Header().Set("Content-Type", "text/html;charset=utf-8")
w.WriteHeader(http.StatusOK)
w.Write([]byte(page))
}
func RandomString(n int) (string, error) {
bytes := make([]byte, n)
if _, err := rand.Read(bytes); err != nil {
return "", err
}
return hex.EncodeToString(bytes), nil
}
// Strip hypha name from all ancestor names, replace _ with spaces, title case
func BeautifulName(uglyName string) string {
if uglyName == "" {
return uglyName
}
return strings.Title(strings.ReplaceAll(uglyName, "_", " "))
}
// CanonicalName makes sure the `name` is canonical. A name is canonical if it is lowercase and all spaces are replaced with underscores.
func CanonicalName(name string) string {
return strings.ToLower(strings.ReplaceAll(name, " ", "_"))
}
// HyphaPattern is a pattern which all hyphae must match.
var HyphaPattern = regexp.MustCompile(`[^?!:#@><*|"\'&%{}]+`)
// IsCanonicalName checks if the `name` is canonical.
func IsCanonicalName(name string) bool {
return HyphaPattern.MatchString(name)
}