/**
* Loads the versioning information for the given project-information structure using the project
* information's internal name as lookup key.
*
* @param projectInformation the project we load information for.
*/
public VersionHelper(final ProjectInformation projectInformation) {
if (projectInformation == null) {
throw new NullPointerException();
}
this.projectInformation = projectInformation;
Manifest manifest = manifestCache.get(projectInformation.getInternalName());
if (manifest == null) {
final ClassLoader loader = projectInformation.getClass().getClassLoader();
try {
final Enumeration resources = loader.getResources("META-INF/MANIFEST.MF");
while (resources.hasMoreElements()) {
final URL url = (URL) resources.nextElement();
final String urlAsText = url.toURI().toString();
Manifest maybeManifest = manifestCache.getByURL(urlAsText);
if (maybeManifest == null) {
final InputStream inputStream = url.openStream();
try {
maybeManifest = new Manifest(new BufferedInputStream(inputStream));
} finally {
inputStream.close();
}
}
final Attributes attr =
getAttributes(maybeManifest, projectInformation.getInternalName());
final String maybeTitle = getValue(attr, "Implementation-ProductID", null);
if (maybeTitle != null) {
manifestCache.set(maybeTitle, urlAsText, maybeManifest);
if (maybeTitle.equals(projectInformation.getInternalName())) {
manifest = maybeManifest;
break;
}
} else {
manifestCache.set(maybeTitle, urlAsText, maybeManifest);
}
}
} catch (Exception e) {
// Ignore; Maybe log.
e.printStackTrace();
}
}
if (manifest != null) {
init(manifest);
} else {
DebugLog.log(
"Failed to create version information for " + projectInformation.getInternalName());
version = "TRUNK.development";
title = projectInformation.getInternalName();
productId = projectInformation.getInternalName();
releaseMajor = "0";
releaseMinor = "0";
releaseMilestone = "0";
releaseCandidateToken = "snapshot";
releaseBuildNumber = "0";
releaseNumber = createReleaseVersion();
}
}
/**
* Initializes the instance, reaading the properties from the input stream.
*
* @param props the manifest.
* @return true, if the manifest contains version information about this library, false otherwise.
*/
private boolean init(final Manifest props) {
try {
final Attributes attr = getAttributes(props, projectInformation.getInternalName());
final String maybeTitle = getValue(attr, "Implementation-ProductID", null);
if (ObjectUtilities.equal(projectInformation.getInternalName(), maybeTitle) == false) {
return false;
}
title = getValue(attr, "Implementation-Title", maybeTitle);
version = getValue(attr, "Implementation-Version", "");
if (version.length() == 0) {
version = "TRUNK.development";
}
releaseMajor = "0";
releaseMinor = "0";
releaseMilestone = "0";
releaseCandidateToken = "snapshot";
releaseBuildNumber = "0";
if (version.startsWith("TRUNK") == false) {
// format is something like 3.8.0[.x]-GA.12345
final int dashPos = version.indexOf('-');
final String versionNumber;
final String implIndicator;
if (dashPos != -1) {
versionNumber = version.substring(0, dashPos);
implIndicator = version.substring(dashPos + 1);
} else {
versionNumber = version;
implIndicator = "";
}
if (StringUtils.isEmpty(versionNumber) == false) {
final StringTokenizer tokNum = new StringTokenizer(versionNumber, ".");
if (tokNum.hasMoreTokens()) {
releaseMajor = tokNum.nextToken();
}
if (tokNum.hasMoreTokens()) {
releaseMinor = tokNum.nextToken();
}
if (tokNum.hasMoreTokens()) {
releaseMilestone = tokNum.nextToken();
}
final StringTokenizer tokImpl = new StringTokenizer(implIndicator, ".");
if (tokImpl.hasMoreTokens()) {
releaseCandidateToken = tokImpl.nextToken();
}
if (tokImpl.hasMoreTokens()) {
releaseBuildNumber = tokImpl.nextToken();
}
}
}
releaseNumber = createReleaseVersion();
productId = maybeTitle;
if (productId.length() == 0) {
productId = createProductId();
}
return true;
} catch (final Exception e) {
return false;
}
}