Adds a modified copy of talk/base to webrtc/base. It is the first step in migrating talk/base to webrtc/base.
BUG=N/A R=andrew@webrtc.org, wu@webrtc.org Review URL: https://webrtc-codereview.appspot.com/12199004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@6107 4adac7df-926f-26a2-2b94-8c16560cd09d
This commit is contained in:
henrike@webrtc.org
307
webrtc/base/fileutils.cc
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307
webrtc/base/fileutils.cc
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/*
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* Copyright 2004 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <assert.h>
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#if defined(WEBRTC_WIN)
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// TODO(grunell): Remove io.h includes when Chromium has started
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// to use AEC in each source. http://crbug.com/264611.
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#include <io.h>
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#include "webrtc/base/win32.h"
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#endif
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#include "webrtc/base/pathutils.h"
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#include "webrtc/base/fileutils.h"
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#include "webrtc/base/stringutils.h"
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#include "webrtc/base/stream.h"
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#if defined(WEBRTC_WIN)
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#include "webrtc/base/win32filesystem.h"
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#else
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#include "webrtc/base/unixfilesystem.h"
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#endif
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#if !defined(WEBRTC_WIN)
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#define MAX_PATH 260
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#endif
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namespace rtc {
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//////////////////////////
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// Directory Iterator //
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//////////////////////////
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// A DirectoryIterator is created with a given directory. It originally points
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// to the first file in the directory, and can be advanecd with Next(). This
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// allows you to get information about each file.
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// Constructor
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DirectoryIterator::DirectoryIterator()
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#ifdef WEBRTC_WIN
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: handle_(INVALID_HANDLE_VALUE) {
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#else
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: dir_(NULL), dirent_(NULL) {
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#endif
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}
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// Destructor
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DirectoryIterator::~DirectoryIterator() {
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#if defined(WEBRTC_WIN)
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if (handle_ != INVALID_HANDLE_VALUE)
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::FindClose(handle_);
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#else
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if (dir_)
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closedir(dir_);
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#endif
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}
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// Starts traversing a directory.
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// dir is the directory to traverse
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// returns true if the directory exists and is valid
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bool DirectoryIterator::Iterate(const Pathname &dir) {
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directory_ = dir.pathname();
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#if defined(WEBRTC_WIN)
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if (handle_ != INVALID_HANDLE_VALUE)
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::FindClose(handle_);
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std::string d = dir.pathname() + '*';
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handle_ = ::FindFirstFile(ToUtf16(d).c_str(), &data_);
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if (handle_ == INVALID_HANDLE_VALUE)
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return false;
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#else
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if (dir_ != NULL)
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closedir(dir_);
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dir_ = ::opendir(directory_.c_str());
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if (dir_ == NULL)
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return false;
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dirent_ = readdir(dir_);
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if (dirent_ == NULL)
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return false;
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if (::stat(std::string(directory_ + Name()).c_str(), &stat_) != 0)
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return false;
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#endif
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return true;
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}
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// Advances to the next file
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// returns true if there were more files in the directory.
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bool DirectoryIterator::Next() {
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#if defined(WEBRTC_WIN)
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return ::FindNextFile(handle_, &data_) == TRUE;
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#else
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dirent_ = ::readdir(dir_);
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if (dirent_ == NULL)
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return false;
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return ::stat(std::string(directory_ + Name()).c_str(), &stat_) == 0;
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#endif
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}
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// returns true if the file currently pointed to is a directory
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bool DirectoryIterator::IsDirectory() const {
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#if defined(WEBRTC_WIN)
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return (data_.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != FALSE;
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#else
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return S_ISDIR(stat_.st_mode);
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#endif
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}
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// returns the name of the file currently pointed to
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std::string DirectoryIterator::Name() const {
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#if defined(WEBRTC_WIN)
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return ToUtf8(data_.cFileName);
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#else
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assert(dirent_ != NULL);
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return dirent_->d_name;
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#endif
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}
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// returns the size of the file currently pointed to
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size_t DirectoryIterator::FileSize() const {
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#if !defined(WEBRTC_WIN)
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return stat_.st_size;
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#else
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return data_.nFileSizeLow;
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#endif
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}
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// returns the last modified time of this file
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time_t DirectoryIterator::FileModifyTime() const {
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#if defined(WEBRTC_WIN)
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time_t val;
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FileTimeToUnixTime(data_.ftLastWriteTime, &val);
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return val;
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#else
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return stat_.st_mtime;
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#endif
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}
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FilesystemInterface* Filesystem::default_filesystem_ = NULL;
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FilesystemInterface *Filesystem::EnsureDefaultFilesystem() {
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if (!default_filesystem_) {
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#if defined(WEBRTC_WIN)
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default_filesystem_ = new Win32Filesystem();
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#else
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default_filesystem_ = new UnixFilesystem();
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#endif
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}
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return default_filesystem_;
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}
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bool FilesystemInterface::CopyFolder(const Pathname &old_path,
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const Pathname &new_path) {
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bool success = true;
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VERIFY(IsFolder(old_path));
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Pathname new_dir;
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new_dir.SetFolder(new_path.pathname());
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Pathname old_dir;
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old_dir.SetFolder(old_path.pathname());
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if (!CreateFolder(new_dir))
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return false;
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DirectoryIterator *di = IterateDirectory();
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if (!di)
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return false;
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if (di->Iterate(old_dir.pathname())) {
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do {
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if (di->Name() == "." || di->Name() == "..")
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continue;
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Pathname source;
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Pathname dest;
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source.SetFolder(old_dir.pathname());
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dest.SetFolder(new_path.pathname());
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source.SetFilename(di->Name());
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dest.SetFilename(di->Name());
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if (!CopyFileOrFolder(source, dest))
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success = false;
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} while (di->Next());
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}
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delete di;
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return success;
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}
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bool FilesystemInterface::DeleteFolderContents(const Pathname &folder) {
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bool success = true;
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VERIFY(IsFolder(folder));
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DirectoryIterator *di = IterateDirectory();
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if (!di)
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return false;
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if (di->Iterate(folder)) {
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do {
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if (di->Name() == "." || di->Name() == "..")
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continue;
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Pathname subdir;
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subdir.SetFolder(folder.pathname());
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if (di->IsDirectory()) {
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subdir.AppendFolder(di->Name());
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if (!DeleteFolderAndContents(subdir)) {
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success = false;
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}
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} else {
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subdir.SetFilename(di->Name());
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if (!DeleteFile(subdir)) {
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success = false;
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}
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}
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} while (di->Next());
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}
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delete di;
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return success;
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}
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bool FilesystemInterface::CleanAppTempFolder() {
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Pathname path;
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if (!GetAppTempFolder(&path))
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return false;
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if (IsAbsent(path))
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return true;
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if (!IsTemporaryPath(path)) {
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ASSERT(false);
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return false;
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}
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return DeleteFolderContents(path);
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}
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Pathname Filesystem::GetCurrentDirectory() {
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return EnsureDefaultFilesystem()->GetCurrentDirectory();
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}
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bool CreateUniqueFile(Pathname& path, bool create_empty) {
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LOG(LS_INFO) << "Path " << path.pathname() << std::endl;
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// If no folder is supplied, use the temporary folder
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if (path.folder().empty()) {
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Pathname temporary_path;
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if (!Filesystem::GetTemporaryFolder(temporary_path, true, NULL)) {
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printf("Get temp failed\n");
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return false;
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}
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path.SetFolder(temporary_path.pathname());
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}
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// If no filename is supplied, use a temporary name
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if (path.filename().empty()) {
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std::string folder(path.folder());
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std::string filename = Filesystem::TempFilename(folder, "gt");
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path.SetPathname(filename);
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if (!create_empty) {
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Filesystem::DeleteFile(path.pathname());
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}
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return true;
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}
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// Otherwise, create a unique name based on the given filename
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// foo.txt -> foo-N.txt
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const std::string basename = path.basename();
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const size_t MAX_VERSION = 100;
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size_t version = 0;
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while (version < MAX_VERSION) {
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std::string pathname = path.pathname();
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if (!Filesystem::IsFile(pathname)) {
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if (create_empty) {
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FileStream* fs = Filesystem::OpenFile(pathname, "w");
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delete fs;
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}
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return true;
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}
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version += 1;
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char version_base[MAX_PATH];
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sprintfn(version_base, ARRAY_SIZE(version_base), "%s-%u",
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basename.c_str(), version);
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path.SetBasename(version_base);
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}
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return true;
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}
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// Taken from Chromium's base/platform_file_*.cc.
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// TODO(grunell): Remove when Chromium has started to use AEC in each source.
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// http://crbug.com/264611.
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FILE* FdopenPlatformFileForWriting(PlatformFile file) {
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#if defined(WEBRTC_WIN)
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if (file == kInvalidPlatformFileValue)
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return NULL;
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int fd = _open_osfhandle(reinterpret_cast<intptr_t>(file), 0);
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if (fd < 0)
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return NULL;
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return _fdopen(fd, "w");
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#else
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return fdopen(file, "w");
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#endif
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}
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bool ClosePlatformFile(PlatformFile file) {
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#if defined(WEBRTC_WIN)
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return CloseHandle(file) != 0;
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#else
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return close(file);
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#endif
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}
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} // namespace rtc
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