1
0
mirror of https://github.com/osmarks/mycorrhiza.git synced 2024-12-15 14:30:26 +00:00
mycorrhiza/util/util.go

118 lines
2.9 KiB
Go
Raw Normal View History

package util
import (
2020-11-14 10:39:18 +00:00
"crypto/rand"
"encoding/hex"
2020-08-31 17:52:26 +00:00
"net/http"
"regexp"
"strings"
2021-03-02 16:36:57 +00:00
"unicode"
)
// TODO: make names match to fields of config file
2020-10-25 15:06:51 +00:00
var (
SiteName string
SiteNavIcon string
HomePage string
UserHypha string
HeaderLinksHypha string
ServerPort string
URL string
GeminiCertPath string
WikiDir string
ConfigFilePath string
UseFixedAuth bool
FixedCredentialsPath string
UseRegistration bool
RegistrationCredentialsPath string
LimitRegistration int
2020-10-25 15:06:51 +00:00
)
2021-03-02 16:36:57 +00:00
// LettersNumbersOnly keeps letters and numbers only in the given string.
func LettersNumbersOnly(s string) string {
var (
ret strings.Builder
usedUnderscore bool
)
for _, r := range s {
if unicode.IsLetter(r) || unicode.IsNumber(r) {
ret.WriteRune(r)
usedUnderscore = false
} else if !usedUnderscore {
ret.WriteRune('_')
usedUnderscore = true
}
}
return strings.Trim(ret.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
}
2020-08-31 17:52:26 +00:00
// HTTP404Page writes a 404 error in the status, needed when no content is found on the page.
func HTTP404Page(w http.ResponseWriter, page string) {
w.Header().Set("Content-Type", "text/html;charset=utf-8")
w.WriteHeader(http.StatusNotFound)
w.Write([]byte(page))
}
2020-08-31 17:52:26 +00:00
// 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))
}
2020-10-03 16:56:56 +00:00
2020-11-14 10:39:18 +00:00
func RandomString(n int) (string, error) {
bytes := make([]byte, n)
if _, err := rand.Read(bytes); err != nil {
return "", err
}
return hex.EncodeToString(bytes), nil
}
2021-01-10 11:58:02 +00:00
// Strip hypha name from all ancestor names, replace _ with spaces, title case
func BeautifulName(uglyName string) string {
2021-01-11 16:13:41 +00:00
if uglyName == "" {
return uglyName
}
2021-01-14 11:39:54 +00:00
return strings.Title(strings.ReplaceAll(uglyName, "_", " "))
2021-01-10 11:58:02 +00:00
}
// 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(
strings.TrimRight(
strings.TrimLeft(name, "_"),
"_",
), " ", "_"))
}
// HyphaPattern is a pattern which all hyphae must match.
var HyphaPattern = regexp.MustCompile(`[^?!:#@><*|"\'&%{}]+`)
var UsernamePattern = regexp.MustCompile(`[^?!:#@><*|"\'&%{}/]+`)
// IsCanonicalName checks if the `name` is canonical.
func IsCanonicalName(name string) bool {
return HyphaPattern.MatchString(name)
}
func IsPossibleUsername(username string) bool {
return UsernamePattern.MatchString(strings.TrimSpace(username))
}