org.openl.util.FileSignatureHelper Maven / Gradle / Ivy
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package org.openl.util;
public final class FileSignatureHelper {
private static final int REGULAR_ARCHIVE_FILE_SIGN = 0x504B0304;
private static final int EMPTY_ARCHIVE_FILE_SIGN = 0x504B0506;
private FileSignatureHelper() {
}
/**
* Verifies if first 4 bytes matches archive signature
*
* @param sign first 4 bytes
* @return {@code true} if it's archive, otherwise {@code false}
* @see List of file signatures
*/
public static boolean isArchiveSign(int sign) {
return sign == REGULAR_ARCHIVE_FILE_SIGN || isEmptyArchive(sign);
}
public static boolean isEmptyArchive(int sing) {
return sing == EMPTY_ARCHIVE_FILE_SIGN;
}
}