/*
* Copyright 2014 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.gradle.api.internal.artifacts.ivyservice.ivyresolve.strategy;
import com.google.common.primitives.Longs;
import org.gradle.api.Transformer;
import java.util.ArrayList;
import java.util.List;
public class VersionParser implements Transformer<Version, String> {
public static final VersionParser INSTANCE = new VersionParser();
public VersionParser() {
}
@Override
public Version transform(String original) {
List<String> parts = new ArrayList<String>();
boolean digit = false;
int startPart = 0;
int pos = 0;
int endBase = 0;
int endBaseStr = 0;
for (; pos < original.length(); pos++) {
char ch = original.charAt(pos);
if (ch == '.' || ch == '_' || ch == '-' || ch == '+') {
parts.add(original.substring(startPart, pos));
startPart = pos + 1;
digit = false;
if (ch != '.' && endBaseStr == 0) {
endBase = parts.size();
endBaseStr = pos;
}
} else if (ch >= '0' && ch <= '9') {
if (!digit && pos > startPart) {
if (endBaseStr == 0) {
endBase = parts.size() + 1;
endBaseStr = pos;
}
parts.add(original.substring(startPart, pos));
startPart = pos;
}
digit = true;
} else {
if (digit) {
if (endBaseStr == 0) {
endBase = parts.size() + 1;
endBaseStr = pos;
}
parts.add(original.substring(startPart, pos));
startPart = pos;
}
digit = false;
}
}
if (pos > startPart) {
parts.add(original.substring(startPart, pos));
}
DefaultVersion base = null;
if (endBaseStr > 0) {
base = new DefaultVersion(original.substring(0, endBaseStr), parts.subList(0, endBase), null);
}
return new DefaultVersion(original, parts, base);
}
private static class DefaultVersion implements Version {
private final String source;
private final String[] parts;
private final Long[] numericParts;
private final DefaultVersion baseVersion;
public DefaultVersion(String source, List<String> parts, DefaultVersion baseVersion) {
this.source = source;
this.parts = parts.toArray(new String[0]);
this.numericParts = new Long[this.parts.length];
for (int i = 0; i < parts.size(); i++) {
this.numericParts[i] = Longs.tryParse(this.parts[i]);
}
this.baseVersion = baseVersion == null ? this : baseVersion;
}
@Override
public String toString() {
return source;
}
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (obj == null || obj.getClass() != getClass()) {
return false;
}
DefaultVersion other = (DefaultVersion) obj;
return source.equals(other.source);
}
@Override
public int hashCode() {
return source.hashCode();
}
@Override
public boolean isQualified() {
return baseVersion != this;
}
@Override
public Version getBaseVersion() {
return baseVersion;
}
public String[] getParts() {
return parts;
}
@Override
public Long[] getNumericParts() {
return numericParts;
}
@Override
public String getSource() {
return source;
}
}
}