Support local changes

.github/workflows/pull-request-verification.yml

@@ -71,6 +71,23 @@ jobs:
       if: steps.filter.outputs.any != 'true' || steps.filter.outputs.error == 'true'
       run: exit 1
 
+  test-local-changes:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - run: echo "NEW FILE" > local
+    - run: git add local
+    - uses: ./
+      id: filter
+      with:
+        base: HEAD
+        filters: |
+          local:
+            - local
+    - name: filter-test
+      if: steps.filter.outputs.local != 'true'
+      run: exit 1
+
   test-change-type:
     runs-on: ubuntu-latest
     steps:

README.md

@@ -35,6 +35,10 @@ doesn't allow this because they doesn't work on a level of individual jobs or st
   when `base` input parameter is same as the branch that triggered the workflow:
     - Changes are detected from last commit
   - Uses git commands to detect changes - repository must be already [checked out](https://github.com/actions/checkout)
+- **Local changes**
+  - Workflow triggered by any event when `base` input parameter is set to `HEAD`
+  - Changes are detected against current HEAD
+  - Untracked files are ignored
 
 ## Example
 ```yaml
@@ -304,6 +308,35 @@ jobs:
 ```
 </details>
 
+<details>
+  <summary><b>Local changes:</b> Detect staged and unstaged local changes</summary>
+
+```yaml
+on:
+  push:
+    branches: # Push to following branches will trigger the workflow
+      - master
+      - develop
+      - release/**
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+
+      # Some action which modifies files tracked by git (e.g. code linter)
+    - uses: johndoe/some-action@v1
+
+      # Filter to detect which files were modified
+      # Changes could be for example automatically committed
+    - uses: dorny/paths-filter@v2
+      id: filter
+      with:
+        base: HEAD
+        filters: ... # Configure your filters
+```
+</details>
+
 ## Advanced options
 
 <details>

dist/index.js

@@ -3811,11 +3811,12 @@ var __importDefault = (this && this.__importDefault) || function (mod) {
     return (mod && mod.__esModule) ? mod : { "default": mod };
 };
 Object.defineProperty(exports, "__esModule", { value: true });
-exports.isGitSha = exports.getShortName = exports.getCurrentRef = exports.listAllFilesAsAdded = exports.parseGitDiffOutput = exports.getChangesSinceMergeBase = exports.getChanges = exports.getChangesInLastCommit = exports.NULL_SHA = void 0;
+exports.isGitSha = exports.getShortName = exports.getCurrentRef = exports.listAllFilesAsAdded = exports.parseGitDiffOutput = exports.getChangesSinceMergeBase = exports.getChangesOnHead = exports.getChanges = exports.getChangesInLastCommit = exports.HEAD = exports.NULL_SHA = void 0;
 const exec_1 = __importDefault(__webpack_require__(807));
 const core = __importStar(__webpack_require__(470));
 const file_1 = __webpack_require__(258);
 exports.NULL_SHA = '0000000000000000000000000000000000000000';
+exports.HEAD = 'HEAD';
 async function getChangesInLastCommit() {
     core.startGroup(`Change detection in last commit`);
     let output = '';
@@ -3850,6 +3851,20 @@ async function getChanges(ref) {
     return parseGitDiffOutput(output);
 }
 exports.getChanges = getChanges;
+async function getChangesOnHead() {
+    // Get current changes - both staged and unstaged
+    core.startGroup(`Change detection on HEAD`);
+    let output = '';
+    try {
+        output = (await exec_1.default('git', ['diff', '--no-renames', '--name-status', '-z', 'HEAD'])).stdout;
+    }
+    finally {
+        fixStdOutNullTermination();
+        core.endGroup();
+    }
+    return parseGitDiffOutput(output);
+}
+exports.getChangesOnHead = getChangesOnHead;
 async function getChangesSinceMergeBase(ref, initialFetchDepth) {
     if (!(await hasCommit(ref))) {
         // Fetch and add base branch
@@ -4675,6 +4690,11 @@ function getConfigFileContent(configPath) {
     return fs.readFileSync(configPath, { encoding: 'utf8' });
 }
 async function getChangedFiles(token, base, initialFetchDepth) {
+    // if base is 'HEAD' only local uncommitted changes will be detected
+    // This is the simplest case as we don't need to fetch more commits or evaluate current/before refs
+    if (base === git.HEAD) {
+        return await git.getChangesOnHead();
+    }
     if (github.context.eventName === 'pull_request' || github.context.eventName === 'pull_request_target') {
         const pr = github.context.payload.pull_request;
         if (token) {
@@ -4692,7 +4712,7 @@ async function getChangedFilesFromGit(base, initialFetchDepth) {
     const defaultRef = (_a = github.context.payload.repository) === null || _a === void 0 ? void 0 : _a.default_branch;
     const beforeSha = github.context.eventName === 'push' ? github.context.payload.before : null;
     const pushRef = git.getShortName(github.context.ref) ||
-        (core.warning(`'ref' field is missing in PUSH event payload - using current branch, tag or commit SHA`),
+        (core.warning(`'ref' field is missing in event payload - using current branch, tag or commit SHA`),
             await git.getCurrentRef());
     const baseRef = git.getShortName(base) || defaultRef;
     if (!baseRef) {
@@ -4700,11 +4720,11 @@ async function getChangedFilesFromGit(base, initialFetchDepth) {
     }
     const isBaseRefSha = git.isGitSha(baseRef);
     const isBaseSameAsPush = baseRef === pushRef;
-    // If base is commit SHA will do comparison against the referenced commit
-    // Or If base references same branch it was pushed to, we will do comparison against the previously pushed commit
+    // If base is commit SHA we will do comparison against the referenced commit
+    // Or if base references same branch it was pushed to, we will do comparison against the previously pushed commit
     if (isBaseRefSha || isBaseSameAsPush) {
         if (!isBaseRefSha && !beforeSha) {
-            core.warning(`'before' field is missing in PUSH event payload - changes will be detected from last commit`);
+            core.warning(`'before' field is missing in event payload - changes will be detected from last commit`);
             return await git.getChangesInLastCommit();
         }
         const baseSha = isBaseRefSha ? baseRef : beforeSha;

src/git.ts

@@ -3,6 +3,7 @@ import * as core from '@actions/core'
 import {File, ChangeStatus} from './file'
 
 export const NULL_SHA = '0000000000000000000000000000000000000000'
+export const HEAD = 'HEAD'
 
 export async function getChangesInLastCommit(): Promise<File[]> {
   core.startGroup(`Change detection in last commit`)
@@ -39,6 +40,20 @@ export async function getChanges(ref: string): Promise<File[]> {
   return parseGitDiffOutput(output)
 }
 
+export async function getChangesOnHead(): Promise<File[]> {
+  // Get current changes - both staged and unstaged
+  core.startGroup(`Change detection on HEAD`)
+  let output = ''
+  try {
+    output = (await exec('git', ['diff', '--no-renames', '--name-status', '-z', 'HEAD'])).stdout
+  } finally {
+    fixStdOutNullTermination()
+    core.endGroup()
+  }
+
+  return parseGitDiffOutput(output)
+}
+
 export async function getChangesSinceMergeBase(ref: string, initialFetchDepth: number): Promise<File[]> {
   if (!(await hasCommit(ref))) {
     // Fetch and add base branch

src/main.ts

@@ -55,6 +55,12 @@ function getConfigFileContent(configPath: string): string {
 }
 
 async function getChangedFiles(token: string, base: string, initialFetchDepth: number): Promise<File[]> {
+  // if base is 'HEAD' only local uncommitted changes will be detected
+  // This is the simplest case as we don't need to fetch more commits or evaluate current/before refs
+  if (base === git.HEAD) {
+    return await git.getChangesOnHead()
+  }
+
   if (github.context.eventName === 'pull_request' || github.context.eventName === 'pull_request_target') {
     const pr = github.context.payload.pull_request as Webhooks.WebhookPayloadPullRequestPullRequest
     if (token) {
@@ -75,7 +81,7 @@ async function getChangedFilesFromGit(base: string, initialFetchDepth: number):
 
   const pushRef =
     git.getShortName(github.context.ref) ||
-    (core.warning(`'ref' field is missing in PUSH event payload - using current branch, tag or commit SHA`),
+    (core.warning(`'ref' field is missing in event payload - using current branch, tag or commit SHA`),
     await git.getCurrentRef())
 
   const baseRef = git.getShortName(base) || defaultRef
@@ -88,11 +94,11 @@ async function getChangedFilesFromGit(base: string, initialFetchDepth: number):
   const isBaseRefSha = git.isGitSha(baseRef)
   const isBaseSameAsPush = baseRef === pushRef
 
-  // If base is commit SHA will do comparison against the referenced commit
-  // Or If base references same branch it was pushed to, we will do comparison against the previously pushed commit
+  // If base is commit SHA we will do comparison against the referenced commit
+  // Or if base references same branch it was pushed to, we will do comparison against the previously pushed commit
   if (isBaseRefSha || isBaseSameAsPush) {
     if (!isBaseRefSha && !beforeSha) {
-      core.warning(`'before' field is missing in PUSH event payload - changes will be detected from last commit`)
+      core.warning(`'before' field is missing in event payload - changes will be detected from last commit`)
       return await git.getChangesInLastCommit()
     }