/**
* Prepare branch descriptors for existing configuration
*
* @param target the target
* @param roots the vcs root
* @return the list of branch descriptors
* @throws VcsException in case of error
*/
private List<BranchDescriptor> prepareBranchDescriptors(
BranchConfiguration target, List<VirtualFile> roots) throws VcsException {
Map<String, String> map =
target == null ? Collections.<String, String>emptyMap() : target.getReferences();
List<BranchDescriptor> rc = new ArrayList<BranchDescriptor>();
for (VirtualFile root : roots) {
BranchDescriptor d = new BranchDescriptor();
d.root = root;
d.storedReference = map.remove(root.getPath());
if (d.storedReference != null) {
d.storedRoot = d.root.getPath();
}
d.currentReference = myConfig.describeRoot(root);
if (d.storedReference != null && !myModify) {
d.referenceToCheckout = d.storedReference;
} else {
d.referenceToCheckout = d.currentReference;
}
Branch.listAsStrings(myProject, root, false, true, d.existingBranches, null);
Branch.listAsStrings(myProject, root, true, true, d.referencesToSelect, null);
d.updateStatus();
rc.add(d);
}
for (Map.Entry<String, String> m : map.entrySet()) {
String root = m.getKey();
String ref = m.getValue();
BranchDescriptor d = new BranchDescriptor();
d.storedReference = ref;
d.storedRoot = root;
d.referenceToCheckout = ref;
d.updateStatus();
rc.add(d);
}
return rc;
}
/**
* Prepare branches for the case of remote checkout
*
* @param remoteBranch the remote branch to checkout
* @param roots the collection of vcs roots
* @return the list of descriptors for the remote
* @throws VcsException if failed
*/
private List<BranchDescriptor> prepareBranchesForRemote(
String remoteBranch, List<VirtualFile> roots) throws VcsException {
assert roots.size() > 0;
List<BranchDescriptor> rc = new ArrayList<BranchDescriptor>();
HashSet<String> allBranches = new HashSet<String>();
allBranches.addAll(myConfig.getConfigurationNames());
final String qualifiedBranch = "remotes/" + remoteBranch;
String firstRemote = remoteBranch.endsWith("/HEAD") ? null : qualifiedBranch;
for (VirtualFile root : roots) {
BranchDescriptor d = new BranchDescriptor();
d.root = root;
d.currentReference = myConfig.describeRoot(root);
if (firstRemote == null) {
firstRemote = resolveHead(qualifiedBranch, d.root.getPath());
}
d.referenceToCheckout = qualifiedBranch;
Branch.listAsStrings(myProject, root, false, true, d.existingBranches, null);
Branch.listAsStrings(myProject, root, true, true, d.referencesToSelect, null);
allBranches.addAll(d.existingBranches);
rc.add(d);
}
String candidate;
if (firstRemote == null) {
candidate = "untitled";
} else {
int p = firstRemote.indexOf('/', REMOTES_PREFIX.length() + 1);
assert p > 0 && p < firstRemote.length() - 1
: "Unexpected format for remote branch: " + firstRemote;
candidate = firstRemote.substring(p + 1);
}
String actual = null;
if (!allBranches.contains(candidate)) {
actual = candidate;
} else {
for (int i = 2; i < Integer.MAX_VALUE; i++) {
String t = candidate + i;
if (!allBranches.contains(t)) {
actual = t;
break;
}
}
assert actual != null : "Unexpected number of branches: " + remoteBranch;
}
for (BranchDescriptor d : rc) {
d.newBranchName = actual;
d.updateStatus();
}
return rc;
}