package jdk.tools.jlink.internal;
import jdk.internal.jimage.ImageLocation;
import jdk.internal.jimage.ImageStream;
import jdk.internal.jimage.ImageStringsReader;
public final class ImageLocationWriter extends ImageLocation {
private int locationOffset;
private ImageLocationWriter(ImageStringsWriter strings) {
super(new long[ATTRIBUTE_COUNT], strings);
}
void writeTo(ImageStream stream) {
byte[] bytes = ImageLocation.compress(attributes);
locationOffset = stream.getPosition();
stream.put(bytes, 0, bytes.length);
}
private ImageLocationWriter addAttribute(int kind, long value) {
assert ATTRIBUTE_END < kind &&
kind < ATTRIBUTE_COUNT : "Invalid attribute kind";
attributes[kind] = value;
return this;
}
private ImageLocationWriter addAttribute(int kind, String value) {
return addAttribute(kind, strings.add(value));
}
static ImageLocationWriter newLocation(String fullName,
ImageStringsWriter strings,
long contentOffset, long compressedSize, long uncompressedSize) {
String moduleName = "";
String parentName = "";
String baseName;
String extensionName = "";
if (fullName.startsWith("/modules/")) {
moduleName = "modules";
baseName = fullName.substring("/modules/".length());
} else if ( fullName.startsWith("/packages/")) {
moduleName = "packages";
baseName = fullName.substring("/packages/".length());
} else {
int offset = fullName.indexOf('/', 1);
if (fullName.length() >= 2 && fullName.charAt(0) == '/' && offset != -1) {
moduleName = fullName.substring(1, offset);
fullName = fullName.substring(offset + 1);
}
offset = fullName.lastIndexOf('/');
if (1 < offset) {
parentName = fullName.substring(0, offset);
fullName = fullName.substring(offset + 1);
}
offset = fullName.lastIndexOf('.');
if (offset != -1) {
baseName = fullName.substring(0, offset);
extensionName = fullName.substring(offset + 1);
} else {
baseName = fullName;
}
}
return new ImageLocationWriter(strings)
.addAttribute(ATTRIBUTE_MODULE, moduleName)
.addAttribute(ATTRIBUTE_PARENT, parentName)
.addAttribute(ATTRIBUTE_BASE, baseName)
.addAttribute(ATTRIBUTE_EXTENSION, extensionName)
.addAttribute(ATTRIBUTE_OFFSET, contentOffset)
.addAttribute(ATTRIBUTE_COMPRESSED, compressedSize)
.addAttribute(ATTRIBUTE_UNCOMPRESSED, uncompressedSize);
}
@Override
public int hashCode() {
return hashCode(ImageStringsReader.HASH_MULTIPLIER);
}
int hashCode(int seed) {
int hash = seed;
if (getModuleOffset() != 0) {
hash = ImageStringsReader.unmaskedHashCode("/", hash);
hash = ImageStringsReader.unmaskedHashCode(getModule(), hash);
hash = ImageStringsReader.unmaskedHashCode("/", hash);
}
if (getParentOffset() != 0) {
hash = ImageStringsReader.unmaskedHashCode(getParent(), hash);
hash = ImageStringsReader.unmaskedHashCode("/", hash);
}
hash = ImageStringsReader.unmaskedHashCode(getBase(), hash);
if (getExtensionOffset() != 0) {
hash = ImageStringsReader.unmaskedHashCode(".", hash);
hash = ImageStringsReader.unmaskedHashCode(getExtension(), hash);
}
return hash & ImageStringsReader.POSITIVE_MASK;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof ImageLocationWriter)) {
return false;
}
ImageLocationWriter other = (ImageLocationWriter) obj;
return getModuleOffset() == other.getModuleOffset() &&
getParentOffset() == other.getParentOffset() &&
getBaseOffset() == other.getBaseOffset() &&
getExtensionOffset() == other.getExtensionOffset();
}
int getLocationOffset() {
return locationOffset;
}
}