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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ppapi/shared_impl/file_ref_util.h"
#include <stddef.h>
#include "base/files/file_path.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "build/build_config.h"
namespace ppapi {
std::string GetNameForInternalFilePath(const std::string& path) {
if (path == "/")
return path;
size_t pos = path.rfind('/');
CHECK(pos != std::string::npos);
return path.substr(pos + 1);
}
std::string GetNameForExternalFilePath(const base::FilePath& path) {
const base::FilePath::StringType& file_path = path.value();
size_t pos = file_path.rfind(base::FilePath::kSeparators[0]);
CHECK(pos != base::FilePath::StringType::npos);
#if BUILDFLAG(IS_WIN)
return base::WideToUTF8(file_path.substr(pos + 1));
#elif BUILDFLAG(IS_POSIX)
return file_path.substr(pos + 1);
#else
#error "Unsupported platform."
#endif
}
bool IsValidInternalPath(const std::string& path) {
// We check that:
// The path starts with '/'
// The path must contain valid UTF-8 characters.
// It must not FilePath::ReferencesParent().
if (path.empty() || !base::IsStringUTF8(path) || path[0] != '/')
return false;
base::FilePath file_path = base::FilePath::FromUTF8Unsafe(path);
if (file_path.ReferencesParent())
return false;
return true;
}
bool IsValidExternalPath(const base::FilePath& path) {
return !path.empty() && !path.ReferencesParent();
}
void NormalizeInternalPath(std::string* path) {
if (path->size() > 1 && path->back() == '/')
path->erase(path->size() - 1, 1);
}
} // namespace ppapi
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