@Nullable
private byte[] loadFromVersionControl(long date, VirtualFile f) {
try {
final AbstractVcs vcs = VcsUtil.getVcsFor(myProject, f);
if (vcs == null) return null;
final VcsHistoryProvider historyProvider = vcs.getVcsHistoryProvider();
if (historyProvider == null) return null;
final FilePath filePath = VcsContextFactory.SERVICE.getInstance().createFilePathOn(f);
final VcsHistorySession session = historyProvider.createSessionFor(filePath);
if (session == null) return null;
final List<VcsFileRevision> list = session.getRevisionList();
if (list != null) {
for (VcsFileRevision revision : list) {
final Date revisionDate = revision.getRevisionDate();
if (revisionDate == null) {
return null;
}
if (revisionDate.getTime() < date) {
return revision.loadContent();
}
}
}
} catch (Exception e) {
LOG.info(e);
return null;
}
return null;
}
private static boolean isEnabled(
@NotNull Project project, @NotNull FilePath path, @NotNull VirtualFile fileOrParent) {
boolean result = false;
AbstractVcs vcs = ChangesUtil.getVcsForFile(fileOrParent, project);
if (vcs != null) {
VcsHistoryProvider provider = vcs.getVcsHistoryProvider();
result =
provider != null
&& (provider.supportsHistoryForDirectories() || !path.isDirectory())
&& AbstractVcs.fileInVcsByFileStatus(project, fileOrParent)
&& provider.canShowHistoryFor(fileOrParent);
}
return result;
}