net.n2oapp.framework.config.util.StylesResolver Maven / Gradle / Ivy
package net.n2oapp.framework.config.util;
import java.util.HashMap;
import java.util.Map;
import java.util.stream.Collectors;
/**
* Утилита преобразования стилей
*/
public class StylesResolver {
private StylesResolver() {
}
/**
* Преобразовать html стили в react стили
*/
public static Map resolveStyles(String input) {
if (input == null || input.trim().length() == 0) return null;
Map result = new HashMap<>();
String[] lines = input.trim().split(";");
for (String line : lines) {
String[] lineArr = line.split(":");
if (lineArr.length != 2)
throw new IllegalArgumentException("Invalid string of styles");
String key = kebabToCamelCase(lineArr[0].replaceAll("[\\t ]", ""));
String value = lineArr[1];
while (value.startsWith(" "))
value = value.replaceFirst("[\\t ]", "");
result.put(key, value);
}
return result;
}
/**
* Преобразовать html стили в react стили
*/
public static String resolveStylesToString(String input) {
if (input == null) return null;
Map styleMap = resolveStyles(input);
return styleMap.keySet().stream().map(key -> key + ":" + styleMap.get(key))
.collect(Collectors.joining(";"));
}
/**
* Преобразовать строку из kebab-case в camelCase
*/
private static String kebabToCamelCase(String s) {
StringBuilder builder = new StringBuilder();
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) == '-' && i + 1 < s.length()) {
builder.append(Character.toUpperCase(s.charAt(++i)));
} else
builder.append(s.charAt(i));
}
return builder.toString();
}
}