Documentation
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Overview ¶
package path implements utilities for resolving paths within ipfs.
Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func SplitAbsPath ¶
func SplitAbsPath(fpath Path) (mh.Multihash, []string, error)
SplitAbsPath clean up and split fpath. It extracts the first component (which must be a Multihash) and return it separately.
Types ¶
type ErrNoLink ¶
type ErrNoLink struct {
// contains filtered or unexported fields
}
ErrNoLink is returned when a link is not found in a path
type Path ¶
type Path string
TODO: debate making this a private struct wrapped in a public interface would allow us to control creation, and cache segments.
func FromString ¶
func FromString(s string) Path
FromString safely converts a string type to a Path type
type Resolver ¶
type Resolver struct {
DAG merkledag.DAGService
}
Resolver provides path resolution to IPFS It has a pointer to a DAGService, which is uses to resolve nodes.
func (*Resolver) ResolveLinks ¶
func (s *Resolver) ResolveLinks(ndd *merkledag.Node, names []string) (
result []*merkledag.Node, err error)
ResolveLinks iteratively resolves names by walking the link hierarchy. Every node is fetched from the DAGService, resolving the next name. Returns the list of nodes forming the path, starting with ndd. This list is guaranteed never to be empty.
ResolveLinks(nd, []string{"foo", "bar", "baz"}) would retrieve "baz" in ("bar" in ("foo" in nd.Links).Links).Links
func (*Resolver) ResolvePath ¶
func (s *Resolver) ResolvePath(fpath Path) (*merkledag.Node, error)
ResolvePath fetches the node for given path. It returns the last item returned by ResolvePathComponents.
func (*Resolver) ResolvePathComponents ¶
func (s *Resolver) ResolvePathComponents(fpath Path) ([]*merkledag.Node, error)
ResolvePathComponents fetches the nodes for each segment of the given path. It uses the first path component as a hash (key) of the first node, then resolves all other components walking the links, with ResolveLinks.
Source Files