diff options
Diffstat (limited to 'tree.go')
| -rw-r--r-- | tree.go | 18 |
1 files changed, 17 insertions, 1 deletions
@@ -8,6 +8,7 @@ extern int _go_git_treewalk(git_tree *tree, git_treewalk_mode mode, void *ptr); import "C" import ( + "errors" "runtime" "unsafe" ) @@ -134,7 +135,9 @@ func treeWalkCallback(_root *C.char, entry *C.git_tree_entry, ptr unsafe.Pointer } err := data.callback(C.GoString(_root), newTreeEntry(entry)) - if err != nil { + if err == TreeWalkSkip { + return C.int(1) + } else if err != nil { *data.errorTarget = err return C.int(ErrorCodeUser) } @@ -142,6 +145,19 @@ func treeWalkCallback(_root *C.char, entry *C.git_tree_entry, ptr unsafe.Pointer return C.int(ErrorCodeOK) } +// TreeWalkSkip is an error that can be returned form TreeWalkCallback to skip +// a subtree from being expanded. +var TreeWalkSkip = errors.New("skip") + +// Walk traverses the entries in a tree and its subtrees in pre order. +// +// The entries will be traversed in the pre order, children subtrees will be +// automatically loaded as required, and the callback will be called once per +// entry with the current (relative) root for the entry and the entry data +// itself. +// +// If the callback returns TreeWalkSkip, the passed entry will be skipped on +// the traversal. Any other non-nil error stops the walk. func (t *Tree) Walk(callback TreeWalkCallback) error { var err error data := treeWalkCallbackData{ |