nodegit获取所有暂存文件的diff

nodegit get diff of all staged files

本文关键字：文件 diff 获取 nodegit      更新时间：2023-09-26

NodeGit提供了一种简单的方法，可以在没有阶段性更改的情况下获得所有当前更改的差异：

import NodeGit, { Diff } from 'nodegit';
function getUnstagedChanges(path) {
  const repo = await NodeGit.Repository.open(path);
  const diff = await Diff.indexToWorkdir(repo, null, {
    flags: Diff.OPTION.INCLUDE_UNTRACKED |
           Diff.OPTION.RECURSE_UNTRACKED_DIRS
    });
  console.log(await diff.patches());
}
getUnstagedChanges();

是否有类似的解决方案来区分所有阶段的更改？

好的，我找到了一种方法，但在第一次提交之前它不会起作用：

import NodeGit, { Diff } from 'nodegit';
function getStagedChanges(path) {
  const repo = await NodeGit.Repository.open(path);
  const head = await repository.getHeadCommit();
  if (!head) {
    return [];
  }
  const diff = await Diff.treeToIndex(repo, await head.getTree(), null);
  const patches = await diff.patches();
  console.log(patches.map((patch) => patch.newFile().path()));
}
getStagedChanges();

奇怪的是，您没有看到阶段性更改，因为indexToWorkdir的工作原理与git diff完全相同，并且只显示阶段性更改。我写了一个例子，对我来说很有效。它在diff中显示暂存和未暂存的文件，请尝试一下。如果跳过选项，只显示暂存的文件。

还要注意将Diff.OPTION.INCLUDE_UNTRACKED替换为Diff.OPTION.SHOW_UNTRACKED_CONTENT

import path from 'path';
import Git from 'nodegit';
async function print() {
    const repo = await Git.Repository.open(path.resolve(__dirname, '.git'));
    const diff = await Git.Diff.indexToWorkdir(repo, null, {
        flags: Git.Diff.OPTION.SHOW_UNTRACKED_CONTENT | Git.Diff.OPTION.RECURSE_UNTRACKED_DIRS
    });
    // you can't simple log diff here, it logs as empty object
    // console.log(diff); // -> {}
    diff.patches().then((patches) => {
        patches.forEach((patch) => {
            patch.hunks().then((hunks) => {
                hunks.forEach((hunk) => {
                    hunk.lines().then((lines) => {
                        console.log("diff", patch.oldFile().path(), patch.newFile().path());
                        console.log(hunk.header().trim());
                        lines.forEach((line) => {
                            console.log(String.fromCharCode(line.origin()) + line.content().trim());
                        });
                    });
                });
            });
        });
    });
    return diff;
}
print().catch(err => console.error(err));

即使没有现有的提交，也可以使用空树（不包含任何内容的树的哈希）。

import { Repository, Tree, Diff } from 'nodegit';
const emptyTree = '4b825dc642cb6eb9a060e54bf8d69288fbee4904';
function getStagedChanges(path) {
  const repo = await Repository.open(path);
  const head = await repository.getHeadCommit();
  const tree = await (head ? head.getTree() : Tree.lookup(repo, emptyTree));
  const diff = await Diff.treeToIndex(repo, await head.getTree(), null);
  const patches = await diff.patches();
  console.log(patches.map((patch) => patch.newFile().path()));
}
getStagedChanges('/path/to/repo');
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