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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
// Copyright (c) 2006-2009 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.
#include "base/file_util.h"
#if defined(OS_WIN)
#include <io.h>
#endif
#include <stdio.h>
#if defined(ANDROID) || defined(OS_POSIX)
#include <unistd.h>
#endif
#include <fstream>
#include "base/file_path.h"
#include "base/logging.h"
#include "base/string_util.h"
#include "base/string_piece.h"
#include "base/sys_string_conversions.h"
namespace {
const FilePath::CharType kExtensionSeparator = FILE_PATH_LITERAL('.');
} // namespace
namespace file_util {
bool EndsWithSeparator(const FilePath& path) {
FilePath::StringType value = path.value();
if (value.empty())
return false;
return FilePath::IsSeparator(value[value.size() - 1]);
}
void TrimTrailingSeparator(std::wstring* dir) {
while (dir->length() > 1 && EndsWithSeparator(dir))
dir->resize(dir->length() - 1);
}
FilePath::StringType GetFileExtensionFromPath(const FilePath& path) {
FilePath::StringType file_name = path.BaseName().value();
const FilePath::StringType::size_type last_dot =
file_name.rfind(kExtensionSeparator);
return FilePath::StringType(last_dot == FilePath::StringType::npos ?
FILE_PATH_LITERAL("") :
file_name, last_dot+1);
}
void InsertBeforeExtension(FilePath* path, const FilePath::StringType& suffix) {
FilePath::StringType& value =
const_cast<FilePath::StringType&>(path->value());
const FilePath::StringType::size_type last_dot =
value.rfind(kExtensionSeparator);
const FilePath::StringType::size_type last_separator =
value.find_last_of(FilePath::StringType(FilePath::kSeparators));
if (last_dot == FilePath::StringType::npos ||
(last_separator != std::wstring::npos && last_dot < last_separator)) {
// The path looks something like "C:\pics.old\jojo" or "C:\pics\jojo".
// We should just append the suffix to the entire path.
value.append(suffix);
return;
}
value.insert(last_dot, suffix);
}
void ReplaceExtension(FilePath* path, const FilePath::StringType& extension) {
FilePath::StringType clean_extension;
// If the new extension is "" or ".", then we will just remove the current
// extension.
if (!extension.empty() &&
extension != FilePath::StringType(&kExtensionSeparator, 1)) {
if (extension[0] != kExtensionSeparator)
clean_extension.append(&kExtensionSeparator, 1);
clean_extension.append(extension);
}
FilePath::StringType& value =
const_cast<FilePath::StringType&>(path->value());
const FilePath::StringType::size_type last_dot =
value.rfind(kExtensionSeparator);
const FilePath::StringType::size_type last_separator =
value.find_last_of(FilePath::StringType(FilePath::kSeparators));
// Erase the current extension, if any.
if ((last_dot > last_separator ||
last_separator == FilePath::StringType::npos) &&
last_dot != FilePath::StringType::npos)
value.erase(last_dot);
value.append(clean_extension);
}
FILE* CreateAndOpenTemporaryFile(FilePath* path) {
FilePath directory;
if (!GetTempDir(&directory))
return NULL;
return CreateAndOpenTemporaryFileInDir(directory, path);
}
bool GetFileSize(const FilePath& file_path, int64_t* file_size) {
FileInfo info;
if (!GetFileInfo(file_path, &info))
return false;
*file_size = info.size;
return true;
}
bool CloseFile(FILE* file) {
if (file == NULL)
return true;
return fclose(file) == 0;
}
// Deprecated functions ----------------------------------------------------
bool AbsolutePath(std::wstring* path_str) {
FilePath path(FilePath::FromWStringHack(*path_str));
if (!AbsolutePath(&path))
return false;
*path_str = path.ToWStringHack();
return true;
}
void AppendToPath(std::wstring* path, const std::wstring& new_ending) {
if (!path) {
NOTREACHED();
return; // Don't crash in this function in release builds.
}
if (!EndsWithSeparator(path))
path->push_back(FilePath::kSeparators[0]);
path->append(new_ending);
}
bool CopyFile(const std::wstring& from_path, const std::wstring& to_path) {
return CopyFile(FilePath::FromWStringHack(from_path),
FilePath::FromWStringHack(to_path));
}
bool CreateDirectory(const std::wstring& full_path) {
return CreateDirectory(FilePath::FromWStringHack(full_path));
}
bool CreateNewTempDirectory(const std::wstring& prefix,
std::wstring* new_temp_path) {
#if defined(OS_WIN)
FilePath::StringType dir_prefix(prefix);
#elif defined(OS_POSIX)
FilePath::StringType dir_prefix = WideToUTF8(prefix);
#endif
FilePath temp_path;
if (!CreateNewTempDirectory(dir_prefix, &temp_path))
return false;
*new_temp_path = temp_path.ToWStringHack();
return true;
}
bool CreateTemporaryFileName(std::wstring* temp_file) {
FilePath temp_file_path;
if (!CreateTemporaryFileName(&temp_file_path))
return false;
*temp_file = temp_file_path.ToWStringHack();
return true;
}
bool Delete(const std::wstring& path) {
return Delete(FilePath::FromWStringHack(path));
}
bool DirectoryExists(const std::wstring& path) {
return DirectoryExists(FilePath::FromWStringHack(path));
}
bool EndsWithSeparator(std::wstring* path) {
return EndsWithSeparator(FilePath::FromWStringHack(*path));
}
bool EndsWithSeparator(const std::wstring& path) {
return EndsWithSeparator(FilePath::FromWStringHack(path));
}
bool GetCurrentDirectory(std::wstring* path_str) {
FilePath path;
if (!GetCurrentDirectory(&path))
return false;
*path_str = path.ToWStringHack();
return true;
}
std::wstring GetFileExtensionFromPath(const std::wstring& path) {
FilePath::StringType extension =
GetFileExtensionFromPath(FilePath::FromWStringHack(path));
#if defined(OS_WIN)
return extension;
#elif defined(OS_POSIX)
return UTF8ToWide(extension);
#endif
}
bool GetFileInfo(const std::wstring& file_path, FileInfo* results) {
return GetFileInfo(FilePath::FromWStringHack(file_path), results);
}
std::wstring GetFilenameFromPath(const std::wstring& path) {
if (path.empty() || EndsWithSeparator(path))
return std::wstring();
return FilePath::FromWStringHack(path).BaseName().ToWStringHack();
}
bool GetFileSize(const std::wstring& file_path, int64_t* file_size) {
return GetFileSize(FilePath::FromWStringHack(file_path), file_size);
}
bool GetTempDir(std::wstring* path_str) {
FilePath path;
if (!GetTempDir(&path))
return false;
*path_str = path.ToWStringHack();
return true;
}
FILE* OpenFile(const std::wstring& filename, const char* mode) {
return OpenFile(FilePath::FromWStringHack(filename), mode);
}
bool PathExists(const std::wstring& path) {
return PathExists(FilePath::FromWStringHack(path));
}
bool PathIsWritable(const std::wstring& path) {
return PathIsWritable(FilePath::FromWStringHack(path));
}
int ReadFile(const std::wstring& filename, char* data, int size) {
return ReadFile(FilePath::FromWStringHack(filename), data, size);
}
bool SetCurrentDirectory(const std::wstring& directory) {
return SetCurrentDirectory(FilePath::FromWStringHack(directory));
}
void UpOneDirectory(std::wstring* dir) {
FilePath path = FilePath::FromWStringHack(*dir);
FilePath directory = path.DirName();
// If there is no separator, we will get back kCurrentDirectory.
// In this case don't change |dir|.
if (directory.value() != FilePath::kCurrentDirectory)
*dir = directory.ToWStringHack();
}
int WriteFile(const std::wstring& filename, const char* data, int size) {
return WriteFile(FilePath::FromWStringHack(filename), data, size);
}
} // namespace
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