/**
* If there are no extra fields, use the given fields as new extra data - otherwise merge the
* fields assuming the existing fields and the new fields stem from different locations inside the
* archive.
*
* @param f the extra fields to merge
* @param local whether the new fields originate from local data
*/
private void mergeExtraFields(ZipExtraField[] f, boolean local) throws ZipException {
if (extraFields == null) {
setExtraFields(f);
} else {
for (int i = 0; i < f.length; i++) {
ZipExtraField existing;
if (f[i] instanceof UnparseableExtraFieldData) {
existing = unparseableExtra;
} else {
existing = getExtraField(f[i].getHeaderId());
}
if (existing == null) {
addExtraField(f[i]);
} else {
if (local || !(existing instanceof CentralDirectoryParsingZipExtraField)) {
byte[] b = f[i].getLocalFileDataData();
existing.parseFromLocalFileData(b, 0, b.length);
} else {
byte[] b = f[i].getCentralDirectoryData();
((CentralDirectoryParsingZipExtraField) existing)
.parseFromCentralDirectoryData(b, 0, b.length);
}
}
}
setExtra();
}
}
/** Removes unparseable extra field data. */
public void removeUnparseableExtraFieldData() {
if (unparseableExtra == null) {
throw new java.util.NoSuchElementException();
}
unparseableExtra = null;
setExtra();
}
/**
* Remove an extra field.
*
* @param type the type of extra field to remove
* @since 1.1
*/
public void removeExtraField(ZipShort type) {
if (extraFields == null) {
throw new java.util.NoSuchElementException();
}
if (extraFields.remove(type) == null) {
throw new java.util.NoSuchElementException();
}
setExtra();
}
/**
* Creates a new zip entry with fields taken from the specified zip entry.
*
* @param entry the entry to get fields from
* @since 1.1
* @throws ZipException on error
*/
public ZipEntry(java.util.zip.ZipEntry entry) throws ZipException {
super(entry);
byte[] extra = entry.getExtra();
if (extra != null) {
setExtraFields(
ExtraFieldUtils.parse(extra, true, ExtraFieldUtils.UnparseableExtraField.READ));
} else {
// initializes extra data to an empty byte array
setExtra();
}
}
/**
* Adds an extra field - replacing an already present extra field of the same type.
*
* <p>If no extra field of the same type exists, the field will be added as last field.
*
* @param ze an extra field
* @since 1.1
*/
public void addExtraField(ZipExtraField ze) {
if (ze instanceof UnparseableExtraFieldData) {
unparseableExtra = (UnparseableExtraFieldData) ze;
} else {
if (extraFields == null) {
extraFields = new LinkedHashMap();
}
extraFields.put(ze.getHeaderId(), ze);
}
setExtra();
}
/**
* Replaces all currently attached extra fields with the new array.
*
* @param fields an array of extra fields
* @since 1.1
*/
public void setExtraFields(ZipExtraField[] fields) {
extraFields = new LinkedHashMap();
for (int i = 0; i < fields.length; i++) {
if (fields[i] instanceof UnparseableExtraFieldData) {
unparseableExtra = (UnparseableExtraFieldData) fields[i];
} else {
extraFields.put(fields[i].getHeaderId(), fields[i]);
}
}
setExtra();
}
/**
* Adds an extra field - replacing an already present extra field of the same type.
*
* <p>The new extra field will be the first one.
*
* @param ze an extra field
* @since 1.1
*/
public void addAsFirstExtraField(ZipExtraField ze) {
if (ze instanceof UnparseableExtraFieldData) {
unparseableExtra = (UnparseableExtraFieldData) ze;
} else {
LinkedHashMap copy = extraFields;
extraFields = new LinkedHashMap();
extraFields.put(ze.getHeaderId(), ze);
if (copy != null) {
copy.remove(ze.getHeaderId());
extraFields.putAll(copy);
}
}
setExtra();
}
