blob: a85a2db0ff3d009db911dc6d304fbea7947172ec [file] [log] [blame]
// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'dart:io';
import 'package:meta/meta.dart';
import 'package:process/process.dart';
import './globals.dart';
/// A wrapper around git process calls that can be mocked for unit testing.
class Git {
Git(this.processManager) : assert(processManager != null);
final ProcessManager processManager;
String getOutput(
List<String> args,
String explanation, {
@required String workingDirectory,
}) {
final ProcessResult result = _run(args, workingDirectory);
if (result.exitCode == 0) {
return stdoutToString(result.stdout);
}
_reportFailureAndExit(args, workingDirectory, result, explanation);
return null; // for the analyzer's sake
}
int run(
List<String> args,
String explanation, {
bool allowNonZeroExitCode = false,
@required String workingDirectory,
}) {
final ProcessResult result = _run(args, workingDirectory);
if (result.exitCode != 0 && !allowNonZeroExitCode) {
_reportFailureAndExit(args, workingDirectory, result, explanation);
}
return result.exitCode;
}
ProcessResult _run(List<String> args, String workingDirectory) {
return processManager.runSync(
<String>['git', ...args],
workingDirectory: workingDirectory,
environment: <String, String>{'GIT_TRACE': '1'},
);
}
void _reportFailureAndExit(
List<String> args,
String workingDirectory,
ProcessResult result,
String explanation,
) {
final StringBuffer message = StringBuffer();
if (result.exitCode != 0) {
message.writeln(
'Command "git ${args.join(' ')}" failed in directory "$workingDirectory" to '
'$explanation. Git exited with error code ${result.exitCode}.',
);
} else {
message.writeln('Command "git ${args.join(' ')}" failed to $explanation.');
}
if ((result.stdout as String).isNotEmpty)
message.writeln('stdout from git:\n${result.stdout}\n');
if ((result.stderr as String).isNotEmpty)
message.writeln('stderr from git:\n${result.stderr}\n');
throw Exception(message);
}
}