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cache the file/dir status when creating a tree node so that traversal can work if the file is deleted

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This commit is contained in:
Zlatin Balevsky
2020-03-25 08:08:55 +00:00
parent a2ed308cd0
commit 83bdf76c08
1 changed files with 4 additions and 2 deletions
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6
core/src/main/groovy/com/muwire/core/files/FileTree.groovy
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@ -23,6 +23,7 @@ class FileTree<T> {
if (existing == null) {
existing = new TreeNode()
existing.file = element
existing.isFile = element.isFile()
existing.parent = current
fileToNode.put(element, existing)
current.children.add(existing)
@ -64,7 +65,7 @@ class FileTree<T> {
private void doTraverse(TreeNode<T> node, FileTreeCallback<T> callback) {
boolean leave = false
if (node.file != null) {
if (node.file.isFile())
if (node.isFile)
callback.onFile(node.file, node.value)
else {
leave = true
@ -88,7 +89,7 @@ class FileTree<T> {
node = fileToNode.get(parent)
node.children.each {
if (it.file.isFile())
if (it.isFile)
callback.onFile(it.file, it.value)
else
callback.onDirectory(it.file)
@ -98,6 +99,7 @@ class FileTree<T> {
public static class TreeNode<T> {
TreeNode parent
File file
boolean isFile
T value;
final Set<TreeNode> children = new HashSet<>()