1 /*
2 * Copyright 2016-2025 the original author or authors.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.mybatis.dynamic.sql.util;
17
18 public interface StringUtilities {
19
20 static String spaceAfter(String in) {
21 return in + " "; //$NON-NLS-1$
22 }
23
24 static String spaceBefore(String in) {
25 return " " + in; //$NON-NLS-1$
26 }
27
28 static String toCamelCase(String inputString) {
29 StringBuilder sb = new StringBuilder();
30
31 boolean nextUpperCase = false;
32
33 for (int i = 0; i < inputString.length(); i++) {
34 char c = inputString.charAt(i);
35 if (Character.isLetterOrDigit(c)) {
36 if (nextUpperCase) {
37 sb.append(Character.toUpperCase(c));
38 nextUpperCase = false;
39 } else {
40 sb.append(Character.toLowerCase(c));
41 }
42 } else {
43 if (!sb.isEmpty()) {
44 nextUpperCase = true;
45 }
46 }
47 }
48
49 return sb.toString();
50 }
51
52 static String formatConstantForSQL(String in) {
53 String escaped = in.replace("'", "''"); //$NON-NLS-1$ //$NON-NLS-2$
54 return "'" + escaped + "'"; //$NON-NLS-1$ //$NON-NLS-2$
55 }
56
57 static <T> T upperCaseIfPossible(T value) {
58 if (value instanceof String) {
59 @SuppressWarnings("unchecked")
60 T t = (T) ((String) value).toUpperCase();
61 return t;
62 }
63
64 return value;
65 }
66 }