/**
* Returns the root of the current context or {@code null}.
*
* @param ctx query context
* @return root
*/
final Value root(final QueryContext ctx) {
final Value v = ctx != null ? ctx.value : null;
// no root specified: return context, if it does not reference a document
// as e.g. happens in //a(b|c)
if (root == null) return v == null || v.type != NodeType.DOC ? v : null;
// root is value: return root
if (root.isValue()) return (Value) root;
// no root reference, no context: return null
if (!(root instanceof Root) || v == null) return null;
// return context sequence or root of current context
return v.size() == 1 ? Root.root(v) : v;
}
/**
* Returns the initial context value of a path or {@code null}.
*
* @param qc query context (may be @code null)
* @return root
*/
private Value initial(final QueryContext qc) {
// current context value
final Value v = qc != null ? qc.value : null;
// no root or context expression: return context
if (root == null || root instanceof Context) return v;
// root reference
if (root instanceof Root) return v != null && v instanceof Item ? Root.root(v) : v;
// root is value: return root
if (root.isValue()) return (Value) root;
// data reference
final Data d = root.data();
if (d != null) return new DBNode(d, 0, Data.ELEM);
// otherwise, return null
return null;
}
/**
* Load VCS roots
*
* @param project the project
* @param roots the VCS root list
* @param exceptions the list of of exceptions to use
* @param fetchData if true, the data for remote is fetched.
* @return the loaded information about vcs roots
*/
private static List<Root> loadRoots(
final Project project,
final List<VirtualFile> roots,
final Collection<VcsException> exceptions,
final boolean fetchData) {
final ArrayList<Root> rc = new ArrayList<Root>();
for (VirtualFile root : roots) {
try {
Root r = new Root();
rc.add(r);
r.root = root;
GitBranch b = GitBranch.current(project, root);
if (b != null) {
r.currentBranch = b.getFullName();
r.remoteName = b.getTrackedRemoteName(project, root);
r.remoteBranch = b.getTrackedBranchName(project, root);
if (r.remoteName != null) {
if (fetchData && !r.remoteName.equals(".")) {
GitLineHandler fetch = new GitLineHandler(project, root, GitCommand.FETCH);
fetch.addParameters(r.remoteName, "-v");
Collection<VcsException> exs = GitHandlerUtil.doSynchronouslyWithExceptions(fetch);
exceptions.addAll(exs);
}
GitBranch tracked = b.tracked(project, root);
assert tracked != null : "Tracked branch cannot be null here";
final boolean trackedBranchExists = tracked.exists(root);
if (!trackedBranchExists) {
LOG.info("loadRoots tracked branch " + tracked + " doesn't exist yet");
}
// check what remote commits are not yet merged
if (trackedBranchExists) {
GitSimpleHandler toPull = new GitSimpleHandler(project, root, GitCommand.LOG);
toPull.addParameters(
"--pretty=format:%H", r.currentBranch + ".." + tracked.getFullName());
toPull.setNoSSH(true);
toPull.setStdoutSuppressed(true);
StringScanner su = new StringScanner(toPull.run());
while (su.hasMoreData()) {
if (su.line().trim().length() != 0) {
r.remoteCommits++;
}
}
}
// check what local commits are to be pushed
GitSimpleHandler toPush = new GitSimpleHandler(project, root, GitCommand.LOG);
// if the tracked branch doesn't exist yet (nobody pushed the branch yet), show all
// commits on this branch.
final String revisions =
trackedBranchExists
? tracked.getFullName() + ".." + r.currentBranch
: r.currentBranch;
toPush.addParameters("--pretty=format:%H%x20%ct%x20%at%x20%s%n%P", revisions);
toPush.setNoSSH(true);
toPush.setStdoutSuppressed(true);
StringScanner sp = new StringScanner(toPush.run());
while (sp.hasMoreData()) {
if (sp.isEol()) {
sp.line();
continue;
}
Commit c = new Commit();
c.root = r;
String hash = sp.spaceToken();
String time = sp.spaceToken();
c.revision = new GitRevisionNumber(hash, new Date(Long.parseLong(time) * 1000L));
c.authorTime = sp.spaceToken();
c.message = sp.line();
c.isMerge = sp.line().indexOf(' ') != -1;
r.commits.add(c);
}
}
}
} catch (VcsException e) {
exceptions.add(e);
}
}
return rc;
}