Example usage for org.apache.commons.compress.archivers.zip UnicodePathExtraField getNameCRC32

Introduction

In this page you can find the example usage for org.apache.commons.compress.archivers.zip UnicodePathExtraField getNameCRC32.

Prototype

public long getNameCRC32() 

Source Link

Usage

From source file:com.zimbra.cs.util.ZipUtil.java

/**
 * Use InfoZIP Unicode Extra Fields (if present) to set the filename
 *//* w  w  w.  jav  a  2s  .c  o m*/
private static String getNameFromUnicodeExtraPathIfPresent(ZipArchiveEntry zae) {
    UnicodePathExtraField unicodePathExtraField = (UnicodePathExtraField) zae
            .getExtraField(UnicodePathExtraField.UPATH_ID);
    if (null == unicodePathExtraField) {
        return null;
    }
    CRC32 crc32 = new CRC32();
    crc32.update(zae.getRawName());
    long origCRC32 = crc32.getValue();

    if (origCRC32 == unicodePathExtraField.getNameCRC32()) {
        String val = convertBytesIfPossible(unicodePathExtraField.getUnicodeName(), StandardCharsets.UTF_8);
        if (null != val) {
            ZimbraLog.misc.debug("ZipUtil name '%s' from unicodeExtraPath", val);
        }
        return val;
    }
    return null;
}

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