blob: ae9309ce1b5cc6332c3397698ff7598151b25e09 [file] [log] [blame]
/*
* Copyright 2004 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "webrtc/base/fileutils.h"
#include "webrtc/base/arraysize.h"
#include "webrtc/base/checks.h"
#include "webrtc/base/pathutils.h"
#include "webrtc/base/stringutils.h"
#include "webrtc/base/stream.h"
#if defined(WEBRTC_WIN)
#include "webrtc/base/win32filesystem.h"
#else
#include "webrtc/base/unixfilesystem.h"
#endif
#if !defined(WEBRTC_WIN)
#define MAX_PATH 260
#endif
namespace rtc {
//////////////////////////
// Directory Iterator //
//////////////////////////
// A DirectoryIterator is created with a given directory. It originally points
// to the first file in the directory, and can be advanecd with Next(). This
// allows you to get information about each file.
// Constructor
DirectoryIterator::DirectoryIterator()
#ifdef WEBRTC_WIN
: handle_(INVALID_HANDLE_VALUE) {
#else
: dir_(NULL), dirent_(NULL) {
#endif
}
// Destructor
DirectoryIterator::~DirectoryIterator() {
#if defined(WEBRTC_WIN)
if (handle_ != INVALID_HANDLE_VALUE)
::FindClose(handle_);
#else
if (dir_)
closedir(dir_);
#endif
}
// Starts traversing a directory.
// dir is the directory to traverse
// returns true if the directory exists and is valid
bool DirectoryIterator::Iterate(const Pathname &dir) {
directory_ = dir.pathname();
#if defined(WEBRTC_WIN)
if (handle_ != INVALID_HANDLE_VALUE)
::FindClose(handle_);
std::string d = dir.pathname() + '*';
handle_ = ::FindFirstFile(ToUtf16(d).c_str(), &data_);
if (handle_ == INVALID_HANDLE_VALUE)
return false;
#else
if (dir_ != NULL)
closedir(dir_);
dir_ = ::opendir(directory_.c_str());
if (dir_ == NULL)
return false;
dirent_ = readdir(dir_);
if (dirent_ == NULL)
return false;
if (::stat(std::string(directory_ + Name()).c_str(), &stat_) != 0)
return false;
#endif
return true;
}
// Advances to the next file
// returns true if there were more files in the directory.
bool DirectoryIterator::Next() {
#if defined(WEBRTC_WIN)
return ::FindNextFile(handle_, &data_) == TRUE;
#else
dirent_ = ::readdir(dir_);
if (dirent_ == NULL)
return false;
return ::stat(std::string(directory_ + Name()).c_str(), &stat_) == 0;
#endif
}
// returns true if the file currently pointed to is a directory
bool DirectoryIterator::IsDirectory() const {
#if defined(WEBRTC_WIN)
return (data_.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != FALSE;
#else
return S_ISDIR(stat_.st_mode);
#endif
}
// returns the name of the file currently pointed to
std::string DirectoryIterator::Name() const {
#if defined(WEBRTC_WIN)
return ToUtf8(data_.cFileName);
#else
RTC_DCHECK(dirent_);
return dirent_->d_name;
#endif
}
// returns the size of the file currently pointed to
size_t DirectoryIterator::FileSize() const {
#if !defined(WEBRTC_WIN)
return stat_.st_size;
#else
return data_.nFileSizeLow;
#endif
}
bool DirectoryIterator::OlderThan(int seconds) const {
time_t file_modify_time;
#if defined(WEBRTC_WIN)
FileTimeToUnixTime(data_.ftLastWriteTime, &file_modify_time);
#else
file_modify_time = stat_.st_mtime;
#endif
return time(NULL) - file_modify_time >= seconds;
}
FilesystemInterface* Filesystem::default_filesystem_ = NULL;
FilesystemInterface *Filesystem::EnsureDefaultFilesystem() {
if (!default_filesystem_) {
#if defined(WEBRTC_WIN)
default_filesystem_ = new Win32Filesystem();
#else
default_filesystem_ = new UnixFilesystem();
#endif
}
return default_filesystem_;
}
DirectoryIterator* FilesystemInterface::IterateDirectory() {
return new DirectoryIterator();
}
bool FilesystemInterface::CopyFolder(const Pathname &old_path,
const Pathname &new_path) {
bool success = true;
VERIFY(IsFolder(old_path));
Pathname new_dir;
new_dir.SetFolder(new_path.pathname());
Pathname old_dir;
old_dir.SetFolder(old_path.pathname());
if (!CreateFolder(new_dir))
return false;
DirectoryIterator *di = IterateDirectory();
if (!di)
return false;
if (di->Iterate(old_dir.pathname())) {
do {
if (di->Name() == "." || di->Name() == "..")
continue;
Pathname source;
Pathname dest;
source.SetFolder(old_dir.pathname());
dest.SetFolder(new_path.pathname());
source.SetFilename(di->Name());
dest.SetFilename(di->Name());
if (!CopyFileOrFolder(source, dest))
success = false;
} while (di->Next());
}
delete di;
return success;
}
bool FilesystemInterface::DeleteFolderContents(const Pathname &folder) {
bool success = true;
VERIFY(IsFolder(folder));
DirectoryIterator *di = IterateDirectory();
if (!di)
return false;
if (di->Iterate(folder)) {
do {
if (di->Name() == "." || di->Name() == "..")
continue;
Pathname subdir;
subdir.SetFolder(folder.pathname());
if (di->IsDirectory()) {
subdir.AppendFolder(di->Name());
if (!DeleteFolderAndContents(subdir)) {
success = false;
}
} else {
subdir.SetFilename(di->Name());
if (!DeleteFile(subdir)) {
success = false;
}
}
} while (di->Next());
}
delete di;
return success;
}
bool FilesystemInterface::DeleteFolderAndContents(const Pathname& folder) {
return DeleteFolderContents(folder) && DeleteEmptyFolder(folder);
}
bool FilesystemInterface::CleanAppTempFolder() {
Pathname path;
if (!GetAppTempFolder(&path))
return false;
if (IsAbsent(path))
return true;
if (!IsTemporaryPath(path)) {
ASSERT(false);
return false;
}
return DeleteFolderContents(path);
}
Pathname Filesystem::GetCurrentDirectory() {
return EnsureDefaultFilesystem()->GetCurrentDirectory();
}
bool CreateUniqueFile(Pathname& path, bool create_empty) {
LOG(LS_INFO) << "Path " << path.pathname() << std::endl;
// If no folder is supplied, use the temporary folder
if (path.folder().empty()) {
Pathname temporary_path;
if (!Filesystem::GetTemporaryFolder(temporary_path, true, NULL)) {
printf("Get temp failed\n");
return false;
}
path.SetFolder(temporary_path.pathname());
}
// If no filename is supplied, use a temporary name
if (path.filename().empty()) {
std::string folder(path.folder());
std::string filename = Filesystem::TempFilename(folder, "gt");
path.SetPathname(filename);
if (!create_empty) {
Filesystem::DeleteFile(path.pathname());
}
return true;
}
// Otherwise, create a unique name based on the given filename
// foo.txt -> foo-N.txt
const std::string basename = path.basename();
const size_t MAX_VERSION = 100;
size_t version = 0;
while (version < MAX_VERSION) {
std::string pathname = path.pathname();
if (!Filesystem::IsFile(pathname)) {
if (create_empty) {
FileStream* fs = Filesystem::OpenFile(pathname, "w");
delete fs;
}
return true;
}
version += 1;
char version_base[MAX_PATH];
sprintfn(version_base, arraysize(version_base), "%s-%u", basename.c_str(),
version);
path.SetBasename(version_base);
}
return true;
}
} // namespace rtc