public static boolean deleteOlderVersions(File f) {
String[] nav = getNameAndVersion(f);
if (nav == null) return false;
boolean success = true;
VersionNumber num = new VersionNumber(nav[1]);
Map<VersionNumber, File> versions = getInstalledVersions(nav[0]);
for (VersionNumber versionNumber : versions.keySet()) {
if (num.compareTo(versionNumber) < 0) {
String vnString =
versionNumber.equals(VersionNumber.ZERO) ? null : versionNumber.toString();
File file = versions.get(versionNumber); // buildFileName(nav[0], vnString);
success = deletePluginFile(file); // file).delete() && success;
}
}
return success;
}
public int compareTo(NameAndVersion oth) {
if (!name.equals(oth.name)) return name.compareTo(oth.name);
else {
if (version == null) return 1;
else if (oth.version == null) return -1;
else return version.compareTo(oth.version);
}
}
/**
* Check the status of the named plugin - whether an older, the same or a newer version is already
* installed.
*
* @param f The plugin file.
* @return an integer indicating the status
*/
public static int checkInstalledVersion(File f) {
String[] nav = getNameAndVersion(f);
if (nav == null) return UNKNOWN_VERSION;
VersionNumber vn = new VersionNumber(nav[1]);
Map<VersionNumber, File> versions = getInstalledVersions(nav[0]);
if (versions.size() == 0) {
return NO_VERSIONS_INSTALLED;
}
VersionNumber thenum = versions.keySet().iterator().next();
boolean hasSame = vn.compareTo(thenum) == 0;
boolean hasNewer = vn.compareTo(thenum) > 0;
if (hasNewer) return NEWER_VERSION_INSTALLED;
if (hasSame) return SAME_VERSION_INSTALLED;
return OLDER_VERSION_INSTALLED;
}