private static String[] getTypes(ICompareInput input) {
ITypedElement ancestor = input.getAncestor();
ITypedElement left = input.getLeft();
ITypedElement right = input.getRight();
ArrayList tmp = new ArrayList();
if (ancestor != null) {
String type = ancestor.getType();
if (type != null) tmp.add(normalizeCase(type));
}
if (left != null) {
String type = left.getType();
if (type != null) tmp.add(normalizeCase(type));
}
if (right != null) {
String type = right.getType();
if (type != null) tmp.add(normalizeCase(type));
}
return (String[]) tmp.toArray(new String[tmp.size()]);
}
private DiffNode addDirectoryFiles(ITypedElement elem, int diffType) {
ITypedElement l = null;
ITypedElement r = null;
if (diffType == Differencer.DELETION) {
r = elem;
} else {
l = elem;
}
if (elem.getType().equals(ITypedElement.FOLDER_TYPE)) {
DiffNode diffNode = null;
diffNode = new DiffNode(null, Differencer.CHANGE, null, l, r);
ITypedElement[] children = (ITypedElement[]) ((IStructureComparator) elem).getChildren();
for (ITypedElement child : children) {
diffNode.add(addDirectoryFiles(child, diffType));
}
return diffNode;
}
return new DiffNode(diffType, null, l, r);
}
/* (non Javadoc)
* see ITypedElement.getType
*/
public String getType() {
ITypedElement id = getId();
if (id != null) return id.getType();
return ITypedElement.UNKNOWN_TYPE;
}
public ViewerDescriptor[] findContentViewerDescriptor(
Viewer oldViewer, Object in, CompareConfiguration cc) {
Set result = new LinkedHashSet();
if (in instanceof IStreamContentAccessor) {
String type = ITypedElement.TEXT_TYPE;
if (in instanceof ITypedElement) {
ITypedElement tin = (ITypedElement) in;
IContentType ct = getContentType(tin);
if (ct != null) {
initializeRegistries();
List list = fContentViewers.searchAll(ct);
if (list != null) result.addAll(list);
}
String ty = tin.getType();
if (ty != null) type = ty;
}
initializeRegistries();
List list = fContentViewers.searchAll(type);
if (list != null) result.addAll(list);
// fallback
result.add(
fContentViewers.search(
Platform.getContentTypeManager().getContentType(IContentTypeManager.CT_TEXT)));
return (ViewerDescriptor[]) result.toArray(new ViewerDescriptor[0]);
}
if (!(in instanceof ICompareInput)) return null;
ICompareInput input = (ICompareInput) in;
IContentType ctype = getCommonType(input);
if (ctype != null) {
initializeRegistries();
List list = fContentMergeViewers.searchAll(ctype);
if (list != null) result.addAll(list);
}
String[] types = getTypes(input);
String type = null;
if (isHomogenous(types)) type = types[0];
if (ITypedElement.FOLDER_TYPE.equals(type)) return null;
if (type == null) {
int n = 0;
for (int i = 0; i < types.length; i++)
if (!ITypedElement.UNKNOWN_TYPE.equals(types[i])) {
n++;
if (type == null) type = types[i]; // remember the first known type
}
if (n > 1) // don't use the type if there were more than one
type = null;
}
if (type != null) {
initializeRegistries();
List list = fContentMergeViewers.searchAll(type);
if (list != null) result.addAll(list);
}
// fallback
String leftType = guessType(input.getLeft());
String rightType = guessType(input.getRight());
if (leftType != null || rightType != null) {
boolean right_text = rightType != null && ITypedElement.TEXT_TYPE.equals(rightType);
boolean left_text = leftType != null && ITypedElement.TEXT_TYPE.equals(leftType);
initializeRegistries();
if ((rightType != null && !right_text) || (leftType != null && !left_text)) {
List list = fContentMergeViewers.searchAll(BINARY_TYPE);
if (list != null) result.addAll(list);
}
List list = fContentMergeViewers.searchAll(ITypedElement.TEXT_TYPE);
if (list != null) result.addAll(list);
return (ViewerDescriptor[]) result.toArray(new ViewerDescriptor[0]);
}
return null;
}
private DiffNode compare(ITypedElement left, ITypedElement right) {
if (left.getType().equals(ITypedElement.FOLDER_TYPE)) {
// return new MyDiffContainer(null, left,right);
DiffNode diffNode = new DiffNode(null, Differencer.CHANGE, null, left, right);
ITypedElement[] lc = (ITypedElement[]) ((IStructureComparator) left).getChildren();
ITypedElement[] rc = (ITypedElement[]) ((IStructureComparator) right).getChildren();
int li = 0;
int ri = 0;
while (li < lc.length && ri < rc.length) {
ITypedElement ln = lc[li];
ITypedElement rn = rc[ri];
int compareTo = ln.getName().compareTo(rn.getName());
// TODO: Git ordering!
if (compareTo == 0) {
if (!ln.equals(rn)) diffNode.add(compare(ln, rn));
++li;
++ri;
} else if (compareTo < 0) {
DiffNode childDiffNode = new DiffNode(Differencer.ADDITION, null, ln, null);
diffNode.add(childDiffNode);
if (ln.getType().equals(ITypedElement.FOLDER_TYPE)) {
ITypedElement[] children = (ITypedElement[]) ((IStructureComparator) ln).getChildren();
if (children != null && children.length > 0) {
for (ITypedElement child : children) {
childDiffNode.add(addDirectoryFiles(child, Differencer.ADDITION));
}
}
}
++li;
} else {
DiffNode childDiffNode = new DiffNode(Differencer.DELETION, null, null, rn);
diffNode.add(childDiffNode);
if (rn.getType().equals(ITypedElement.FOLDER_TYPE)) {
ITypedElement[] children = (ITypedElement[]) ((IStructureComparator) rn).getChildren();
if (children != null && children.length > 0) {
for (ITypedElement child : children) {
childDiffNode.add(addDirectoryFiles(child, Differencer.DELETION));
}
}
}
++ri;
}
}
while (li < lc.length) {
ITypedElement ln = lc[li];
DiffNode childDiffNode = new DiffNode(Differencer.ADDITION, null, ln, null);
diffNode.add(childDiffNode);
if (ln.getType().equals(ITypedElement.FOLDER_TYPE)) {
ITypedElement[] children = (ITypedElement[]) ((IStructureComparator) ln).getChildren();
if (children != null && children.length > 0) {
for (ITypedElement child : children) {
childDiffNode.add(addDirectoryFiles(child, Differencer.ADDITION));
}
}
}
++li;
}
while (ri < rc.length) {
ITypedElement rn = rc[ri];
DiffNode childDiffNode = new DiffNode(Differencer.DELETION, null, null, rn);
diffNode.add(childDiffNode);
if (rn.getType().equals(ITypedElement.FOLDER_TYPE)) {
ITypedElement[] children = (ITypedElement[]) ((IStructureComparator) rn).getChildren();
if (children != null && children.length > 0) {
for (ITypedElement child : children) {
childDiffNode.add(addDirectoryFiles(child, Differencer.DELETION));
}
}
}
++ri;
}
return diffNode;
}
return new DiffNode(left, right);
}