66 lines
2.1 KiB
Java
66 lines
2.1 KiB
Java
package com.seconectai.condocontab.util;
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import java.time.temporal.TemporalAccessor;
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import java.util.Iterator;
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import java.util.Map;
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public final class Json {
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private Json() {
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}
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public static String write(Object value) {
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return value(value);
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}
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private static String value(Object value) {
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if (value == null) {
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return "null";
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}
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if (value instanceof Number || value instanceof Boolean) {
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return String.valueOf(value);
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}
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if (value instanceof TemporalAccessor) {
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return quote(String.valueOf(value));
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}
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if (value instanceof Map<?, ?> map) {
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StringBuilder json = new StringBuilder("{");
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Iterator<? extends Map.Entry<?, ?>> iterator = map.entrySet().iterator();
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while (iterator.hasNext()) {
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Map.Entry<?, ?> entry = iterator.next();
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json.append(quote(String.valueOf(entry.getKey()))).append(":").append(value(entry.getValue()));
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if (iterator.hasNext()) {
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json.append(",");
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}
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}
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return json.append("}").toString();
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}
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if (value instanceof Iterable<?> iterable) {
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StringBuilder json = new StringBuilder("[");
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Iterator<?> iterator = iterable.iterator();
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while (iterator.hasNext()) {
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json.append(value(iterator.next()));
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if (iterator.hasNext()) {
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json.append(",");
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}
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}
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return json.append("]").toString();
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}
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return quote(String.valueOf(value));
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}
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private static String quote(String text) {
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StringBuilder out = new StringBuilder("\"");
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for (char c : text.toCharArray()) {
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switch (c) {
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case '"' -> out.append("\\\"");
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case '\\' -> out.append("\\\\");
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case '\n' -> out.append("\\n");
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case '\r' -> out.append("\\r");
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case '\t' -> out.append("\\t");
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default -> out.append(c);
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}
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}
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return out.append("\"").toString();
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}
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}
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