io.questdb.std.str.AbstractCharSink Maven / Gradle / Ivy

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 *  Copyright (c) 2014-2019 Appsicle
 *  Copyright (c) 2019-2023 QuestDB
 *
 *  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
 *
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 *  distributed under the License is distributed on an "AS IS" BASIS,
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package io.questdb.std.str;

import org.jetbrains.annotations.NotNull;

import static io.questdb.std.Numbers.hexDigits;

public abstract class AbstractCharSink implements CharSink {

    public void putAsPrintable(CharSequence nonPrintable) {
        for (int i = 0, n = nonPrintable.length(); i < n; i++) {
            char c = nonPrintable.charAt(i);
            if (c > 0x1F && c != 0x7F) {
                put(c);
            } else {
                put('\\');
                put('u');

                final int s = (int) c & 0xFF;
                put('0');
                put('0');
                put(hexDigits[s / 0x10]);
                put(hexDigits[s % 0x10]);
            }
        }
    }

    public CharSink repeat(@NotNull CharSequence value, int n) {
        for (int i = 0; i < n; i++) {
            put(value);
        }
        return this;
    }
}