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import { Commit } from "./commit";
import { Revwalk as NodeGitRevwalk, TreeEntry as NodeGitTreeEntry } from "nodegit";
import { Repository } from "./repository";
import { Tree } from "./tree";
import { Blob } from "./blob";
/**
* The core structure of a tree entry
*/
export abstract class BaseTreeEntry {
protected _owner: Repository;
public ng_tree_entry: NodeGitTreeEntry;
public path: string;
/**
* @param owner - The repository which the tree entry is in
* @param entry - An instance of a Nodegit tree entry
*/
constructor(owner: Repository, entry: NodeGitTreeEntry) {
this.ng_tree_entry = entry;
this._owner = owner;
this.path = entry.path();
}
/**
* Returns the tree entry's latest commit
*
* @returns An instance of a commit
*/
public async latestCommit(): Promise<Commit> {
const rev_walk = NodeGitRevwalk.create(this._owner.ng_repository);
rev_walk.pushRef(`refs/heads/${this._owner.branch_name}`);
const commit_cnt = (await rev_walk.getCommitsUntil(() => true)).length;
rev_walk.pushRef(`refs/heads/${this._owner.branch_name}`);
const file_hist = await rev_walk.fileHistoryWalk(this.path, commit_cnt);
return new Commit(this._owner, file_hist[0].commit);
}
/**
* Returns the tree entry's commit history
*
* @returns An array of commit instances
*/
public async history(count?: number): Promise<Commit[]> {
const rev_walk = NodeGitRevwalk.create(this._owner.ng_repository);
rev_walk.pushRef(`refs/heads/${this._owner.branch_name}`);
const commit_cnt = (await rev_walk.getCommitsUntil(() => true)).length;
rev_walk.pushRef(`refs/heads/${this._owner.branch_name}`);
const file_hist = await rev_walk.fileHistoryWalk(this.path, commit_cnt);
const commit_history = file_hist.map(hist_entry => new Commit(this._owner, hist_entry.commit));
return count
? commit_history.slice(0, count)
: commit_history;
}
}
/**
* A representation of a tree entry that's a tree
*/
export class TreeEntry extends BaseTreeEntry {
/**
* Returns the tree of the tree entry
*
* @returns An instance of a tree
*/
public async tree(): Promise<Tree> {
return new Tree(this._owner, await this.ng_tree_entry.getTree());
}
}
/**
* A representation of a tree entry that's a blob
*/
export class BlobTreeEntry extends BaseTreeEntry {
/**
* Returns the blob of the blob tree entry
*
* @returns An instance of a blob
*/
public async blob(): Promise<Blob> {
return new Blob(this);
}
}
/**
* A factory which creates a tree entry
*
* @param owner - The repository that the tree entry is in
* @param entry - An instance of a Nodegit tree entry
* @returns An instance of a tree entry
*/
export function createTreeEntry(owner: Repository, entry: NodeGitTreeEntry): BaseTreeEntry {
return entry.isBlob()
? new BlobTreeEntry(owner, entry)
: new TreeEntry(owner, entry);
}
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