org.ow2.proactive.process_tree_killer.VersionNumber Maven / Gradle / Ivy
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Java utilities for the LocalStack platform.
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/*
* ProActive Parallel Suite(TM):
* The Open Source library for parallel and distributed
* Workflows & Scheduling, Orchestration, Cloud Automation
* and Big Data Analysis on Enterprise Grids & Clouds.
*
* Copyright (c) 2007 - 2017 ActiveEon
* Contact: [email protected]
*
* This library is free software: you can redistribute it and/or
* modify it under the terms of the GNU Affero General Public License
* as published by the Free Software Foundation: version 3 of
* the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see Special tokens
*
* We allow a component to be not just a number, but also "ea", "ea1", "ea2".
* "ea" is treated as "ea0", and eaN < M for any M > 0.
*
*
* '*' is also allowed as a component, and '*' > M for any M > 0.
*
*
* 'SNAPSHOT' is also allowed as a component, and "N.SNAPSHOT" is interpreted as "N-1.*"
*
*
* 2.0.* > 2.0.1 > 2.0.1-SNAPSHOT > 2.0.0.99 > 2.0.0 > 2.0.ea > 2.0
*
*
* This class is re-implemented in 1.415. The class was originally introduced in 1.139
*
* @since 1.139
* @author Stephen Connolly ([email protected])
* @author Kenney Westerhof ([email protected])
* @author Hervé Boutemy ([email protected])
*/
@SuppressWarnings("all")
public class VersionNumber implements Comparable {
private String value;
private String canonical;
private ListItem items;
private interface Item {
public static final int INTEGER_ITEM = 0;
public static final int STRING_ITEM = 1;
public static final int LIST_ITEM = 2;
public static final int WILDCARD_ITEM = 3;
public int compareTo(Item item);
public int getType();
public boolean isNull();
}
/**
* Represents a wild-card item in the version item list.
*/
private static class WildCardItem implements Item {
public int compareTo(Item item) {
if (item == null) // 1.* ( > 1.99) > 1
return 1;
switch (item.getType()) {
case INTEGER_ITEM:
case LIST_ITEM:
case STRING_ITEM:
return 1;
case WILDCARD_ITEM:
return 0;
default:
return 1;
}
}
public int getType() {
return WILDCARD_ITEM;
}
public boolean isNull() {
return false;
}
@Override
public String toString() {
return "*";
}
}
/**
* Represents a numeric item in the version item list.
*/
private static class IntegerItem implements Item {
private static final BigInteger BigInteger_ZERO = new BigInteger("0");
private final BigInteger value;
public static final IntegerItem ZERO = new IntegerItem();
private IntegerItem() {
this.value = BigInteger_ZERO;
}
public IntegerItem(String str) {
this.value = new BigInteger(str);
}
public int getType() {
return INTEGER_ITEM;
}
public boolean isNull() {
return BigInteger_ZERO.equals(value);
}
public int compareTo(Item item) {
if (item == null) {
return BigInteger_ZERO.equals(value) ? 0 : 1; // 1.0 == 1, 1.1 > 1
}
switch (item.getType()) {
case INTEGER_ITEM:
return value.compareTo(((IntegerItem) item).value);
case STRING_ITEM:
return 1; // 1.1 > 1-sp
case LIST_ITEM:
return 1; // 1.1 > 1-1
case WILDCARD_ITEM:
return 0;
default:
throw new RuntimeException("invalid item: " + item.getClass());
}
}
public String toString() {
return value.toString();
}
}
/**
* Represents a string in the version item list, usually a qualifier.
*/
private static class StringItem implements Item {
private final static String[] QUALIFIERS = { "snapshot", "alpha", "beta", "milestone", "rc", "", "sp" };
private final static List _QUALIFIERS = Arrays.asList(QUALIFIERS);
private final static Properties ALIASES = new Properties();
static {
ALIASES.put("ga", "");
ALIASES.put("final", "");
ALIASES.put("cr", "rc");
ALIASES.put("ea", "rc");
}
/**
* A comparable for the empty-string qualifier. This one is used to determine if a given qualifier makes the
* version older than one without a qualifier, or more recent.
*/
private static String RELEASE_VERSION_INDEX = String.valueOf(_QUALIFIERS.indexOf(""));
private String value;
public StringItem(String value, boolean followedByDigit) {
if (followedByDigit && value.length() == 1) {
// a1 = alpha-1, b1 = beta-1, m1 = milestone-1
switch (value.charAt(0)) {
case 'a':
value = "alpha";
break;
case 'b':
value = "beta";
break;
case 'm':
value = "milestone";
break;
}
}
this.value = ALIASES.getProperty(value, value);
}
public int getType() {
return STRING_ITEM;
}
public boolean isNull() {
return (comparableQualifier(value).compareTo(RELEASE_VERSION_INDEX) == 0);
}
/**
* Returns a comparable for a qualifier.
*
* This method both takes into account the ordering of known qualifiers as well as lexical ordering for unknown
* qualifiers.
*
* just returning an Integer with the index here is faster, but requires a lot of if/then/else to check for -1
* or QUALIFIERS.size and then resort to lexical ordering. Most comparisons are decided by the first character,
* so this is still fast. If more characters are needed then it requires a lexical sort anyway.
*
* @param qualifier
* @return
*/
public static String comparableQualifier(String qualifier) {
int i = _QUALIFIERS.indexOf(qualifier);
return i == -1 ? _QUALIFIERS.size() + "-" + qualifier : String.valueOf(i);
}
public int compareTo(Item item) {
if (item == null) {
// 1-rc < 1, 1-ga > 1
return comparableQualifier(value).compareTo(RELEASE_VERSION_INDEX);
}
switch (item.getType()) {
case INTEGER_ITEM:
return -1; // 1.any < 1.1 ?
case STRING_ITEM:
return comparableQualifier(value).compareTo(comparableQualifier(((StringItem) item).value));
case LIST_ITEM:
return -1; // 1.any < 1-1
case WILDCARD_ITEM:
return -1;
default:
throw new RuntimeException("invalid item: " + item.getClass());
}
}
public String toString() {
return value;
}
}
/**
* Represents a version list item. This class is used both for the global item list and for sub-lists (which start
* with '-(number)' in the version specification).
*/
private static class ListItem extends ArrayList- implements Item {
public int getType() {
return LIST_ITEM;
}
public boolean isNull() {
return (size() == 0);
}
void normalize() {
for (ListIterator iterator = listIterator(size()); iterator.hasPrevious();) {
Item item = (Item) iterator.previous();
if (item.isNull()) {
iterator.remove(); // remove null trailing items: 0, "", empty list
} else {
break;
}
}
}
public int compareTo(Item item) {
if (item == null) {
if (size() == 0) {
return 0; // 1-0 = 1- (normalize) = 1
}
Item first = (Item) get(0);
return first.compareTo(null);
}
switch (item.getType()) {
case INTEGER_ITEM:
return -1; // 1-1 < 1.0.x
case STRING_ITEM:
return 1; // 1-1 > 1-sp
case LIST_ITEM:
Iterator left = iterator();
Iterator right = ((ListItem) item).iterator();
while (left.hasNext() || right.hasNext()) {
Item l = left.hasNext() ? (Item) left.next() : null;
Item r = right.hasNext() ? (Item) right.next() : null;
// if this is shorter, then invert the compare and mul with -1
int result = l == null ? -1 * r.compareTo(l) : l.compareTo(r);
if (result != 0) {
return result;
}
}
return 0;
case WILDCARD_ITEM:
return -1;
default:
throw new RuntimeException("invalid item: " + item.getClass());
}
}
public String toString() {
StringBuilder buffer = new StringBuilder("(");
for (Iterator
- iter = iterator(); iter.hasNext();) {
buffer.append(iter.next());
if (iter.hasNext()) {
buffer.append(',');
}
}
buffer.append(')');
return buffer.toString();
}
}
public VersionNumber(String version) {
parseVersion(version);
}
private void parseVersion(String version) {
this.value = version;
items = new ListItem();
version = version.toLowerCase(Locale.ENGLISH);
ListItem list = items;
Stack
- stack = new Stack
- ();
stack.push(list);
boolean isDigit = false;
int startIndex = 0;
for (int i = 0; i < version.length(); i++) {
char c = version.charAt(i);
if (c == '.') {
if (i == startIndex) {
list.add(IntegerItem.ZERO);
} else {
list.add(parseItem(isDigit, version.substring(startIndex, i)));
}
startIndex = i + 1;
} else if (c == '-') {
if (i == startIndex) {
list.add(IntegerItem.ZERO);
} else {
list.add(parseItem(isDigit, version.substring(startIndex, i)));
}
startIndex = i + 1;
if (isDigit) {
list.normalize(); // 1.0-* = 1-*
if ((i + 1 < version.length()) && Character.isDigit(version.charAt(i + 1))) {
// new ListItem only if previous were digits and new char is a digit,
// ie need to differentiate only 1.1 from 1-1
list.add(list = new ListItem());
stack.push(list);
}
}
} else if (c == '*') {
list.add(new WildCardItem());
startIndex = i + 1;
} else if (Character.isDigit(c)) {
if (!isDigit && i > startIndex) {
list.add(new StringItem(version.substring(startIndex, i), true));
startIndex = i;
}
isDigit = true;
} else if (Character.isWhitespace(c)) {
if (i > startIndex) {
if (isDigit) {
list.add(parseItem(true, version.substring(startIndex, i)));
} else {
list.add(new StringItem(version.substring(startIndex, i), true));
}
startIndex = i;
}
isDigit = false;
} else {
if (isDigit && i > startIndex) {
list.add(parseItem(true, version.substring(startIndex, i)));
startIndex = i;
}
isDigit = false;
}
}
if (version.length() > startIndex) {
list.add(parseItem(isDigit, version.substring(startIndex)));
}
while (!stack.isEmpty()) {
list = (ListItem) stack.pop();
list.normalize();
}
canonical = items.toString();
}
private static Item parseItem(boolean isDigit, String buf) {
return isDigit ? (Item) new IntegerItem(buf) : (Item) new StringItem(buf, false);
}
public int compareTo(VersionNumber o) {
return items.compareTo(o.items);
}
public String toString() {
return value;
}
public boolean equals(Object o) {
return (o instanceof VersionNumber) && canonical.equals(((VersionNumber) o).canonical);
}
public int hashCode() {
return canonical.hashCode();
}
public boolean isOlderThan(VersionNumber rhs) {
return compareTo(rhs) < 0;
}
public boolean isNewerThan(VersionNumber rhs) {
return compareTo(rhs) > 0;
}
public int digit(int idx) {
Iterator i = items.iterator();
Item item = (Item) i.next();
while (idx > 0 && i.hasNext()) {
if (item instanceof IntegerItem) {
idx--;
}
i.next();
}
return ((IntegerItem) item).value.intValue();
}
public static final Comparator
DESCENDING = new Comparator() {
public int compare(VersionNumber o1, VersionNumber o2) {
return o2.compareTo(o1);
}
};
}