/
username.go
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/
username.go
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// Copyright 2022 Teamgram Authors
// All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Author: teamgramio (teamgram.io@gmail.com)
//
package username
import (
"strings"
)
const (
MinUsernameLen = 5
MaxUsernameLen = 32
)
const (
UsernameNotExisted = 0
UsernameExisted = 1
UsernameExistedNotMe = 2
UsernameExistedIsMe = 3
)
var ()
/*
if (name != null) {
if (name.startsWith("_") || name.endsWith("_")) {
checkTextView.setText(LocaleController.getString("LinkInvalid", R.string.LinkInvalid));
checkTextView.setTag(Theme.key_windowBackgroundWhiteRedText4);
checkTextView.setTextColor(Theme.getColor(Theme.key_windowBackgroundWhiteRedText4));
return false;
}
for (int a = 0; a < name.length(); a++) {
char ch = name.charAt(a);
if (a == 0 && ch >= '0' && ch <= '9') {
checkTextView.setText(LocaleController.getString("LinkInvalidStartNumber", R.string.LinkInvalidStartNumber));
checkTextView.setTag(Theme.key_windowBackgroundWhiteRedText4);
checkTextView.setTextColor(Theme.getColor(Theme.key_windowBackgroundWhiteRedText4));
return false;
}
if (!(ch >= '0' && ch <= '9' || ch >= 'a' && ch <= 'z' || ch >= 'A' && ch <= 'Z' || ch == '_')) {
checkTextView.setText(LocaleController.getString("LinkInvalid", R.string.LinkInvalid));
checkTextView.setTag(Theme.key_windowBackgroundWhiteRedText4);
checkTextView.setTextColor(Theme.getColor(Theme.key_windowBackgroundWhiteRedText4));
return false;
}
}
}
if (name == null || name.length() < 5) {
checkTextView.setText(LocaleController.getString("LinkInvalidShort", R.string.LinkInvalidShort));
checkTextView.setTag(Theme.key_windowBackgroundWhiteRedText4);
checkTextView.setTextColor(Theme.getColor(Theme.key_windowBackgroundWhiteRedText4));
return false;
}
if (name.length() > 32) {
checkTextView.setText(LocaleController.getString("LinkInvalidLong", R.string.LinkInvalidLong));
checkTextView.setTag(Theme.key_windowBackgroundWhiteRedText4);
checkTextView.setTextColor(Theme.getColor(Theme.key_windowBackgroundWhiteRedText4));
return false;
}
*/
func CheckUsernameInvalid(username string) bool {
if len(username) < MinUsernameLen || len(username) > MaxUsernameLen {
return false
}
if strings.HasPrefix(username, "_") || strings.HasSuffix(username, "_") {
return false
}
if username[0] >= '0' && username[0] <= '9' {
return false
}
for _, ch := range username {
if !(ch >= '0' && ch <= '9' || ch >= 'a' && ch <= 'z' || ch >= 'A' && ch <= 'Z' || ch == '_') {
return false
}
}
return true
}