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add lowerAt and upperAt

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Looly 2023-12-05 12:59:48 +08:00
parent 42e3c66af9
commit 71d4cea0c5
1 changed files with 61 additions and 10 deletions
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71
hutool-core/src/main/java/org/dromara/hutool/core/text/CharSequenceUtil.java
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@ -46,6 +46,8 @@ import java.util.Set;
import java.util.function.Function;
import java.util.function.Predicate;
import java.util.function.Supplier;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* {@link CharSequence} 相关工具类封装，包括但不限于：
@ -3025,10 +3027,10 @@ public class CharSequenceUtil extends StrValidator {
* @param pattern 用于匹配的正则式
* @param replaceFun 决定如何替换的函数
* @return 替换后的字符串
* @see ReUtil#replaceAll(CharSequence, java.util.regex.Pattern, SerFunction)
* @see ReUtil#replaceAll(CharSequence, Pattern, SerFunction)
* @since 4.2.2
*/
public static String replace(final CharSequence str, final java.util.regex.Pattern pattern, final SerFunction<java.util.regex.Matcher, String> replaceFun) {
public static String replace(final CharSequence str, final Pattern pattern, final SerFunction<Matcher, String> replaceFun) {
return ReUtil.replaceAll(str, pattern, replaceFun);
}
@ -3042,7 +3044,7 @@ public class CharSequenceUtil extends StrValidator {
* @see ReUtil#replaceAll(CharSequence, String, SerFunction)
* @since 4.2.2
*/
public static String replace(final CharSequence str, final String regex, final SerFunction<java.util.regex.Matcher, String> replaceFun) {
public static String replace(final CharSequence str, final String regex, final SerFunction<Matcher, String> replaceFun) {
return ReUtil.replaceAll(str, regex, replaceFun);
}
@ -3114,6 +3116,46 @@ public class CharSequenceUtil extends StrValidator {
}
return builder.toString();
}
/**
* 按照给定逻辑替换指定位置的字符，如字符大小写转换等
*
* @param str 字符串
* @param index 位置，-1表示最后一个字符
* @param replaceFunc 替换逻辑，给定原字符，返回新字符
* @return 替换后的字符串
* @since 6.0.0
*/
public static String replaceAt(final CharSequence str, int index, final Function<Character, Character> replaceFunc) {
if (str == null) {
return null;
}
// 支持负数
final int length = str.length();
if (index < 0) {
index += length;
}
final String string = str.toString();
if (index < 0 || index >= length) {
return string;
}
// 检查转换前后是否有编码，无变化则不转换，返回原字符串
final char c = string.charAt(index);
final Character newC = replaceFunc.apply(c);
if(c == newC){
// 无变化，返回原字符串
return string;
}
// 此处转换为字符数组
final char[] charArray = string.toCharArray();
charArray[index] = replaceFunc.apply(charArray[index]);
return String.valueOf(charArray);
}
// endregion
// region ----- length
@ -3323,15 +3365,20 @@ public class CharSequenceUtil extends StrValidator {
if (index < 0) {
index += length;
}
final String string = str.toString();
if (index < 0 || index >= length) {
return str.toString();
return string;
}
final char c = str.charAt(index);
if (Character.isLowerCase(c)) {
return subPre(str, index) + Character.toUpperCase(c) + subSuf(str, index + 1);
// return subPre(str, index) + Character.toUpperCase(c) + subSuf(str, index + 1);
final char[] charArray = string.toCharArray();
charArray[index] = Character.toUpperCase(c);
return String.valueOf(charArray);
}
return str.toString();
return string;
}
/**
@ -3352,17 +3399,21 @@ public class CharSequenceUtil extends StrValidator {
if (index < 0) {
index += length;
}
final String string = str.toString();
if (index < 0 || index >= length) {
return str.toString();
return string;
}
final char c = str.charAt(index);
if (Character.isUpperCase(c)) {
return subPre(str, index) + Character.toLowerCase(c) + subSuf(str, index + 1);
// return subPre(str, index) + Character.toLowerCase(c) + subSuf(str, index + 1);
final char[] charArray = string.toCharArray();
charArray[index] = Character.toLowerCase(c);
return String.valueOf(charArray);
}
return str.toString();
return string;
}
/**