Use callbacks for all Git command receivers

dist/index.js

@@ -7450,8 +7450,31 @@ class GitCommandManager {
             else {
                 args.push('--branches');
             }
-            const output = yield this.execGit(args);
-            for (let branch of output.stdout.trim().split('\n')) {
+            const stderr = [];
+            const errline = [];
+            const stdout = [];
+            const stdline = [];
+            const listeners = {
+                stderr: (data) => {
+                    stderr.push(data.toString());
+                },
+                errline: (data) => {
+                    errline.push(data.toString());
+                },
+                stdout: (data) => {
+                    stdout.push(data.toString());
+                },
+                stdline: (data) => {
+                    stdline.push(data.toString());
+                }
+            };
+            core.info(`${this.gitPath} ${args.join(' ')}`);
+            yield this.execGit(args, false, true, listeners);
+            core.debug(`stderr callback is: ${stderr}`);
+            core.debug(`errline callback is: ${errline}`);
+            core.debug(`stdout callback is: ${stdout}`);
+            core.debug(`stdline callback is: ${stdline}`);
+            for (let branch of stdline) {
                 branch = branch.trim();
                 if (branch) {
                     if (branch.startsWith('refs/heads/')) {
@@ -7463,6 +7486,7 @@ class GitCommandManager {
                     result.push(branch);
                 }
             }
+            core.info(result.join('\n'));
             return result;
         });
     }
@@ -7712,7 +7736,7 @@ class GitCommandManager {
             return result;
         });
     }
-    execGit(args, allowAllExitCodes = false, silent = false) {
+    execGit(args, allowAllExitCodes = false, silent = false, customListeners = {}) {
         return __awaiter(this, void 0, void 0, function* () {
             fshelper.directoryExistsSync(this.workingDirectory, true);
             const result = new GitOutput();
@@ -7723,17 +7747,19 @@ class GitCommandManager {
             for (const key of Object.keys(this.gitEnv)) {
                 env[key] = this.gitEnv[key];
             }
+            const defaultListener = {
+                stdout: (data) => {
+                    stdout.push(data.toString());
+                }
+            };
+            const mergedListeners = Object.assign(Object.assign({}, defaultListener), customListeners);
             const stdout = [];
             const options = {
                 cwd: this.workingDirectory,
                 env,
                 silent,
                 ignoreReturnCode: allowAllExitCodes,
-                listeners: {
-                    stdout: (data) => {
-                        stdout.push(data.toString());
-                    }
-                }
+                listeners: mergedListeners
             };
             result.exitCode = yield exec.exec(`"${this.gitPath}"`, args, options);
             result.stdout = stdout.join('');

package-lock.json

@@ -23138,6 +23138,11 @@
       "integrity": "sha512-M8WEXFuKXMYMVr45fo8mq0wUrrJHheiKZf6BArTKk9ZBYCKJEOU5H8cdWgDT+qCVZf7Na4lVUaZsA+h6uA9+PA==",
       "dev": true
     },
+    "emitter-component": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/emitter-component/-/emitter-component-1.1.1.tgz",
+      "integrity": "sha512-G+mpdiAySMuB7kesVRLuyvYRqDmshB7ReKEVuyBPkzQlmiDiLrt7hHHIy4Aff552bgknVN7B2/d3lzhGO5dvpQ=="
+    },
     "emittery": {
       "version": "0.8.1",
       "resolved": "https://registry.npmjs.org/emittery/-/emittery-0.8.1.tgz",
@@ -31781,6 +31786,14 @@
         }
       }
     },
+    "stream": {
+      "version": "0.0.2",
+      "resolved": "https://registry.npmjs.org/stream/-/stream-0.0.2.tgz",
+      "integrity": "sha512-gCq3NDI2P35B2n6t76YJuOp7d6cN/C7Rt0577l91wllh0sY9ZBuw9KaSGqH/b0hzn3CWWJbpbW0W0WvQ1H/Q7g==",
+      "requires": {
+        "emitter-component": "^1.1.1"
+      }
+    },
     "string-length": {
       "version": "4.0.2",
       "resolved": "https://registry.npmjs.org/string-length/-/string-length-4.0.2.tgz",

package.json

@@ -33,6 +33,7 @@
     "@actions/github": "^2.2.0",
     "@actions/io": "^1.1.2",
     "@actions/tool-cache": "^1.1.2",
+    "stream": "0.0.2",
     "uuid": "^3.3.3"
   },
   "devDependencies": {

src/git-command-manager.ts

@@ -7,6 +7,7 @@ import * as refHelper from './ref-helper'
 import * as regexpHelper from './regexp-helper'
 import * as retryHelper from './retry-helper'
 import {GitVersion} from './git-version'
+import stream, {Writable} from 'stream'
 
 // Auth header not supported before 2.9
 // Wire protocol v2 not supported before 2.18
@@ -94,8 +95,11 @@ class GitCommandManager {
 
     // Note, this implementation uses "rev-parse --symbolic-full-name" because the output from
     // "branch --list" is more difficult when in a detached HEAD state.
-    // Note, this implementation uses "rev-parse --symbolic-full-name" because there is a bug
-    // in Git 2.18 that causes "rev-parse --symbolic" to output symbolic full names.
+
+    // TODO(https://github.com/actions/checkout/issues/786): this implementation uses
+    // "rev-parse --symbolic-full-name" because there is a bug
+    // in Git 2.18 that causes "rev-parse --symbolic" to output symbolic full names. When
+    // 2.18 is no longer supported, we can switch back to --symbolic.
 
     const args = ['rev-parse', '--symbolic-full-name']
     if (remote) {
@@ -104,9 +108,36 @@ class GitCommandManager {
       args.push('--branches')
     }
 
-    const output = await this.execGit(args)
+    const stderr: string[] = []
+    const errline: string[] = []
+    const stdout: string[] = []
+    const stdline: string[] = []
+
+    const listeners = {
+      stderr: (data: Buffer) => {
+        stderr.push(data.toString())
+      },
+      errline: (data: Buffer) => {
+        errline.push(data.toString())
+      },
+      stdout: (data: Buffer) => {
+        stdout.push(data.toString())
+      },
+      stdline: (data: Buffer) => {
+        stdline.push(data.toString())
+      }
+    }
+
+    core.info(`${this.gitPath} ${args.join(' ')}`)
+
+    await this.execGit(args, false, true, listeners)
+
+    core.debug(`stderr callback is: ${stderr}`)
+    core.debug(`errline callback is: ${errline}`)
+    core.debug(`stdout callback is: ${stdout}`)
+    core.debug(`stdline callback is: ${stdline}`)
 
-    for (let branch of output.stdout.trim().split('\n')) {
+    for (let branch of stdline) {
       branch = branch.trim()
       if (branch) {
         if (branch.startsWith('refs/heads/')) {
@@ -119,6 +150,8 @@ class GitCommandManager {
       }
     }
 
+    core.info(result.join('\n'))
+
     return result
   }
 
@@ -395,7 +428,8 @@ class GitCommandManager {
   private async execGit(
     args: string[],
     allowAllExitCodes = false,
-    silent = false
+    silent = false,
+    customListeners = {}
   ): Promise<GitOutput> {
     fshelper.directoryExistsSync(this.workingDirectory, true)
 
@@ -409,18 +443,21 @@ class GitCommandManager {
       env[key] = this.gitEnv[key]
     }
 
-    const stdout: string[] = []
+    const defaultListener = {
+      stdout: (data: Buffer) => {
+        stdout.push(data.toString())
+      }
+    }
 
+    const mergedListeners = {...defaultListener, ...customListeners}
+
+    const stdout: string[] = []
     const options = {
       cwd: this.workingDirectory,
       env,
       silent,
       ignoreReturnCode: allowAllExitCodes,
-      listeners: {
-        stdout: (data: Buffer) => {
-          stdout.push(data.toString())
-        }
-      }
+      listeners: mergedListeners
     }
 
     result.exitCode = await exec.exec(`"${this.gitPath}"`, args, options)