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/*
* Copyright 2015 WebAssembly Community Group participants
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//
// FIle helpers.
//
#ifndef wasm_support_file_h
#define wasm_support_file_h
#include <fstream>
#include <string>
#include <utility>
#include <vector>
namespace wasm {
namespace Flags {
enum BinaryOption { Binary, Text };
enum DebugOption { Debug, Release };
} // namespace Flags
std::vector<char> read_stdin(Flags::DebugOption);
template<typename T>
T read_file(const std::string& filename,
Flags::BinaryOption binary,
Flags::DebugOption debug);
// Declare the valid explicit specializations.
extern template std::string
read_file<>(const std::string&, Flags::BinaryOption, Flags::DebugOption);
extern template std::vector<char>
read_file<>(const std::string&, Flags::BinaryOption, Flags::DebugOption);
class Output {
public:
// An empty filename will open stdout instead.
Output(const std::string& filename,
Flags::BinaryOption binary,
Flags::DebugOption debug);
~Output() = default;
template<typename T> std::ostream& operator<<(const T& v) { return out << v; }
std::ostream& getStream() { return out; }
std::ostream& write(const char* s, std::streamsize c) {
return out.write(s, c);
}
private:
Output() = delete;
Output(const Output&) = delete;
Output& operator=(const Output&) = delete;
std::ofstream outfile;
std::ostream out;
};
// Copies a file to another file
void copy_file(std::string input, std::string output);
// Retusn the size of a file
size_t file_size(std::string filename);
} // namespace wasm
#endif // wasm_support_file_h
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