LogMessageFormatter.java

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package dev.rafex.ether.logging.core.format;
 
/*-
 * #%L
 * ether-logging-core
 * %%
 * Copyright (C) 2025 - 2026 Raúl Eduardo González Argote
 * %%
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 * #L%
 */
 
public final class LogMessageFormatter {
 
    private LogMessageFormatter() {
    }
 
    public static String format(final String message, final Object... args) {
        if (message == null) {
            return "null";
        }
        if (args == null || args.length == 0) {
            return message;
        }
 
        final var builder = new StringBuilder(message.length() + 64);
        var argumentIndex = 0;
        var start = 0;
        int placeholderIndex;
        while ((placeholderIndex = message.indexOf("{}", start)) >= 0 && argumentIndex < args.length) {
            builder.append(message, start, placeholderIndex);
            final Object value = args[argumentIndex];
            builder.append(value == null ? "null" : value);
            start = placeholderIndex + 2;
            argumentIndex++;
        }
        builder.append(message, start, message.length());
        return builder.toString();
    }
}