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// Copyright (c) 2009 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.
//
// This file declares util functions for setup project.
#include "chrome/installer/setup/setup_util.h"
#include "base/file_util.h"
#include "base/logging.h"
#include "chrome/installer/util/master_preferences.h"
#include "chrome/installer/util/util_constants.h"
#include "courgette/courgette.h"
#include "third_party/bspatch/mbspatch.h"
int setup_util::ApplyDiffPatch(const FilePath& src,
const FilePath& patch,
const FilePath& dest) {
LOG(INFO) << "Applying patch " << patch.value()
<< " to file " << src.value()
<< " and generating file " << dest.value();
// Try Courgette first. Courgette checks the patch file first and fails
// quickly if the patch file does not have a valid Courgette header.
courgette::Status patch_status =
courgette::ApplyEnsemblePatch(src.value().c_str(),
patch.value().c_str(),
dest.value().c_str());
if (patch_status == courgette::C_OK) {
return 0;
} else {
LOG(INFO) << "Failed to apply patch " << patch.value()
<< " using courgette.";
}
return ApplyBinaryPatch(src.value().c_str(), patch.value().c_str(),
dest.value().c_str());
}
installer::Version* setup_util::GetVersionFromDir(
const FilePath& chrome_path) {
LOG(INFO) << "Looking for Chrome version folder under "
<< chrome_path.value();
FilePath root_path = chrome_path.Append(L"*");
WIN32_FIND_DATA find_data;
HANDLE file_handle = FindFirstFile(root_path.value().c_str(), &find_data);
BOOL ret = TRUE;
installer::Version *version = NULL;
// Here we are assuming that the installer we have is really valid so there
// can not be two version directories. We exit as soon as we find a valid
// version directory.
while (ret) {
if (find_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
LOG(INFO) << "directory found: " << find_data.cFileName;
version = installer::Version::GetVersionFromString(find_data.cFileName);
if (version) break;
}
ret = FindNextFile(file_handle, &find_data);
}
FindClose(file_handle);
return version;
}
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