com.iohao.game.common.kit.adapter.HuStrFormatter Maven / Gradle / Ivy

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package com.iohao.game.common.kit.adapter;

import java.util.Map;

/**
 * @author 渔民小镇
 * @date 2023-01-19
 */
class HuStrFormatter {
    public static String format(String strPattern, Object... argArray) {
        return formatWith(strPattern, HuStrUtil.EMPTY_JSON, argArray);
    }

    public static String formatWith(String strPattern, String placeHolder, Object... argArray) {
        if (HuStrUtil.isBlank(strPattern) || HuStrUtil.isBlank(placeHolder) || HuArrayUtil.isEmpty(argArray)) {
            return strPattern;
        }
        final int strPatternLength = strPattern.length();
        final int placeHolderLength = placeHolder.length();

        // 初始化定义好的长度以获得更好的性能
        final StringBuilder sbuf = new StringBuilder(strPatternLength + 50);

        int handledPosition = 0;
        // 记录已经处理到的位置
        int delimIndex;
        // 占位符所在位置
        for (int argIndex = 0; argIndex < argArray.length; argIndex++) {
            delimIndex = strPattern.indexOf(placeHolder, handledPosition);
            if (delimIndex == -1) {
                // 剩余部分无占位符
                if (handledPosition == 0) {
                    // 不带占位符的模板直接返回
                    return strPattern;
                }
                // 字符串模板剩余部分不再包含占位符，加入剩余部分后返回结果
                sbuf.append(strPattern, handledPosition, strPatternLength);
                return sbuf.toString();
            }

            // 转义符
            if (delimIndex > 0 && strPattern.charAt(delimIndex - 1) == HuStrUtil.C_BACKSLASH) {
                if (delimIndex > 1 && strPattern.charAt(delimIndex - 2) == HuStrUtil.C_BACKSLASH) {
                    // 转义符之前还有一个转义符，占位符依旧有效
                    sbuf.append(strPattern, handledPosition, delimIndex - 1);
                    sbuf.append(HuStrUtil.utf8Str(argArray[argIndex]));
                    handledPosition = delimIndex + placeHolderLength;
                } else {
                    // 占位符被转义
                    argIndex--;
                    sbuf.append(strPattern, handledPosition, delimIndex - 1);
                    sbuf.append(placeHolder.charAt(0));
                    handledPosition = delimIndex + 1;
                }
            } else {// 正常占位符
                sbuf.append(strPattern, handledPosition, delimIndex);
                sbuf.append(HuStrUtil.utf8Str(argArray[argIndex]));
                handledPosition = delimIndex + placeHolderLength;
            }
        }

        // 加入最后一个占位符后所有的字符
        sbuf.append(strPattern, handledPosition, strPatternLength);

        return sbuf.toString();
    }

    public static String format(CharSequence template, Map map, boolean ignoreNull) {
        if (null == template) {
            return null;
        }
        if (null == map || map.isEmpty()) {
            return template.toString();
        }

        String template2 = template.toString();
        String value;
        for (Map.Entry entry : map.entrySet()) {
            value = HuStrUtil.utf8Str(entry.getValue());
            if (null == value && ignoreNull) {
                continue;
            }
            template2 = HuStrUtil.replace(template2, "{" + entry.getKey() + "}", value);
        }
        return template2;
    }
}