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#include <mbgl/util/io.hpp>
#include <cstdio>
#include <cerrno>
#include <cstring>
#include <iostream>
#include <sstream>
#include <fstream>
namespace mbgl {
namespace util {
IOException::IOException(int err, const std::string& msg)
: std::runtime_error(msg + ": " + std::strerror(errno)), code(err) {
}
void write_file(const std::string &filename, const std::string &data) {
FILE *fd = fopen(filename.c_str(), "wb");
if (fd) {
fwrite(data.data(), sizeof(std::string::value_type), data.size(), fd);
fclose(fd);
} else {
throw std::runtime_error(std::string("Failed to open file ") + filename);
}
}
std::string read_file(const std::string &filename) {
std::ifstream file(filename, std::ios::binary);
if (file.good()) {
std::stringstream data;
data << file.rdbuf();
return data.str();
} else {
throw std::runtime_error(std::string("Cannot read file ") + filename);
}
}
optional<std::string> readFile(const std::string &filename) {
std::ifstream file(filename, std::ios::binary);
if (file.good()) {
std::stringstream data;
data << file.rdbuf();
return data.str();
}
return {};
}
void deleteFile(const std::string& filename) {
const int ret = std::remove(filename.c_str());
if (ret != 0 && errno != ENOENT) {
throw IOException(errno, "Could not delete file " + filename);
}
}
void copyFile(const std::string& destination, const std::string& source) {
std::ifstream src(source, std::ios::binary);
if (!src.good()) {
throw IOException(errno, "Cannot read file " + destination);
}
std::ofstream dst(destination, std::ios::binary);
if (!dst.good()) {
throw IOException(errno, "Cannot write file " + destination);
}
dst << src.rdbuf();
}
} // namespace util
} // namespace mbgl
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