src/app/util/HtmlUtil.java - master - evernotenkai/DataBaseXJavaProject

src/app/util/HtmlUtil.java
56 строк2 KB
Makson4ik
Весь проект с src db и прочим делом
12 май 2026, 22:43
12 май 2026, 22:43431f4aa

package app.util;

public final class HtmlUtil {
    private HtmlUtil() {}

    public static String escape(String text) {
        if (text == null) return "";
        return text.replace("&", "&amp;")
                .replace("<", "&lt;")
                .replace(">", "&gt;")
                .replace("\"", "&quot;")
                .replace("'", "&#39;");
    }

    public static boolean isBlankHtml(String html) {
        if (html == null) {
            return true;
        }
        String plain = html
                .replaceAll("(?is)<script.*?>.*?</script>", " ")
                .replaceAll("(?is)<style.*?>.*?</style>", " ")
                .replaceAll("(?s)<[^>]+>", " ")
                .replace("&nbsp;", " ")
                .replace("\u00a0", " ")
                .trim();
        return plain.isEmpty();
    }

    public static String wrapHtml(String content) {
        if (content == null || content.trim().isEmpty()) {
            return "<html><body><div style=\"font-family:Segoe UI,Arial,sans-serif;color:#64748b;\">Пустой текст</div></body></html>";
        }
        String trimmed = content.trim();
        if (trimmed.startsWith("<html") || trimmed.startsWith("<!DOCTYPE") || trimmed.contains("<body")) {
            return content;
        }
        return "<html><body style=\"font-family:Segoe UI,Arial,sans-serif;color:#0f172a;line-height:1.5;\">"
                + escape(content).replace("\n", "<br/>")
                + "</body></html>";
    }

    public static String plainText(String html) {
        if (html == null) return "";
        String text = html.replaceAll("(?is)<script.*?>.*?</script>", " ")
                .replaceAll("(?is)<style.*?>.*?</style>", " ")
                .replaceAll("(?s)<[^>]+>", " ")
                .replace("&nbsp;", " ")
                .replace("\u00a0", " ")
                .replace("&lt;", "<")
                .replace("&gt;", ">")
                .replace("&amp;", "&")
                .replace("&quot;", "\"")
                .replace("&#39;", "'");
        return text.replaceAll("\\s+", " ").trim();
    }
}