Mac app mode: locate Chrome + refactor

chrome/common/mac/app_mode_chrome_locator.mm

+// Copyright (c) 2012 The Chromium 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 "chrome/common/mac/app_mode_chrome_locator.h"
+
+#import <AppKit/AppKit.h>
+#include <CoreFoundation/CoreFoundation.h>
+
+#include "base/file_path.h"
+#include "base/mac/foundation_util.h"
+#include "base/sys_string_conversions.h"
+
+namespace app_mode {
+
+bool FindBundleById(NSString* bundle_id, FilePath* out_bundle) {
+  NSWorkspace* ws = [NSWorkspace sharedWorkspace];
+  NSString *bundlePath = [ws absolutePathForAppBundleWithIdentifier:bundle_id];
+  if (!bundlePath)
+    return false;
+
+  *out_bundle = base::mac::NSStringToFilePath(bundlePath);
+  return true;
+}
+
+bool GetChromeBundleInfo(const FilePath& chrome_bundle,
+                         string16* raw_version_str,
+                         FilePath* version_path,
+                         FilePath* framework_shlib_path) {
+  using base::mac::ObjCCast;
+
+  NSString* cr_bundle_path = base::mac::FilePathToNSString(chrome_bundle);
+  NSBundle* cr_bundle = [NSBundle bundleWithPath:cr_bundle_path];
+
+  if (!cr_bundle)
+    return false;
+
+  // Read raw version string.
+  NSString* cr_version =
+       ObjCCast<NSString>(
+          [cr_bundle objectForInfoDictionaryKey:@"CFBundleShortVersionString"]);
+  if (!cr_version)
+    return false;
+
+  // Get versioned directory.
+  NSArray* cr_versioned_path_components =
+      [NSArray arrayWithObjects:cr_bundle_path,
+                                @"Contents",
+                                @"Versions",
+                                cr_version,
+                                nil];
+  NSString* cr_versioned_path =
+    [NSString pathWithComponents:cr_versioned_path_components];
+
+  // Get the framework path.
+  NSString* cr_bundle_exe =
+      ObjCCast<NSString>(
+          [cr_bundle objectForInfoDictionaryKey:@"CFBundleExecutable"]);
+  NSString* cr_framework_shlib_path =
+      [cr_versioned_path stringByAppendingPathComponent:
+          [cr_bundle_exe stringByAppendingString:@" Framework.framework"]];
+  cr_framework_shlib_path =
+      [cr_framework_shlib_path stringByAppendingPathComponent:
+          [cr_bundle_exe stringByAppendingString:@" Framework"]];
+  if (!cr_bundle_exe || !cr_framework_shlib_path)
+    return false;
+
+  // A few more sanity checks.
+  BOOL is_directory;
+  BOOL exists = [[NSFileManager defaultManager]
+                    fileExistsAtPath:cr_framework_shlib_path
+                         isDirectory:&is_directory];
+  if (!exists || is_directory)
+    return false;
+
+  // Everything OK, copy output parameters.
+  *raw_version_str = base::SysNSStringToUTF16(cr_version);
+  *version_path = base::mac::NSStringToFilePath(cr_versioned_path);
+  *framework_shlib_path =
+      base::mac::NSStringToFilePath(cr_framework_shlib_path);
+  return true;
+}
+
+}  // namespace app_mode