Add clean-exclude input

This allows clients to ignore specific paths from the clean phase of the
checkout.

src/git-command-manager.ts

@@ -42,7 +42,7 @@ export interface IGitCommandManager {
   submoduleSync(recursive: boolean): Promise<void>
   submoduleUpdate(fetchDepth: number, recursive: boolean): Promise<void>
   tagExists(pattern: string): Promise<boolean>
-  tryClean(): Promise<boolean>
+  tryClean(exclude: string[]): Promise<boolean>
   tryConfigUnset(configKey: string, globalConfig?: boolean): Promise<boolean>
   tryDisableAutomaticGarbageCollection(): Promise<boolean>
   tryGetFetchUrl(): Promise<string>
@@ -331,8 +331,14 @@ class GitCommandManager {
     return !!output.stdout.trim()
   }
 
-  async tryClean(): Promise<boolean> {
-    const output = await this.execGit(['clean', '-ffdx'], true)
+  async tryClean(exclude: string[]): Promise<boolean> {
+    var cleanArgs: string[] = []
+    for (const pattern of exclude) {
+      cleanArgs.push('-e')
+      cleanArgs.push(pattern)
+    }
+
+    const output = await this.execGit(['clean', '-ffdx', ...cleanArgs], true)
     return output.exitCode === 0
   }
 

src/git-directory-helper.ts

@@ -11,6 +11,7 @@ export async function prepareExistingDirectory(
   repositoryPath: string,
   repositoryUrl: string,
   clean: boolean,
+  cleanExclude: string[],
   ref: string
 ): Promise<void> {
   assert.ok(repositoryPath, 'Expected repositoryPath to be defined')
@@ -84,7 +85,7 @@ export async function prepareExistingDirectory(
       // Clean
       if (clean) {
         core.startGroup('Cleaning the repository')
-        if (!(await git.tryClean())) {
+        if (!(await git.tryClean(cleanExclude))) {
           core.debug(
             `The clean command failed. This might be caused by: 1) path too long, 2) permission issue, or 3) file in use. For futher investigation, manually run 'git clean -ffdx' on the directory '${repositoryPath}'.`
           )

src/git-source-provider.ts

@@ -68,6 +68,7 @@ export async function getSource(settings: IGitSourceSettings): Promise<void> {
         settings.repositoryPath,
         repositoryUrl,
         settings.clean,
+        settings.cleanExclude,
         settings.ref
       )
     }

src/git-source-settings.ts

@@ -29,6 +29,11 @@ export interface IGitSourceSettings {
    */
   clean: boolean
 
+  /**
+   * Paths to ignore when cleaning the repository
+   */
+  cleanExclude: string[]
+
   /**
    * The depth when fetching
    */

src/input-helper.ts

@@ -81,6 +81,8 @@ export async function getInputs(): Promise<IGitSourceSettings> {
   // Clean
   result.clean = (core.getInput('clean') || 'true').toUpperCase() === 'TRUE'
   core.debug(`clean = ${result.clean}`)
+  result.cleanExclude = (core.getInput('clean-exclude') || '').split(',')
+  core.debug(`cleanExclude = ${JSON.stringify(result.cleanExclude)}`)
 
   // Fetch depth
   result.fetchDepth = Math.floor(Number(core.getInput('fetch-depth') || '1'))