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#include "vcpkg_Files.h"
#include <fstream>
#include <filesystem>
#include <regex>
namespace fs = std::tr2::sys;
namespace vcpkg {namespace Files
{
static const std::regex FILESYSTEM_INVALID_CHARACTERS_REGEX = std::regex(R"([\/:*?"<>|])");
void check_is_directory(const fs::path& dirpath)
{
Checks::check_throw(fs::is_directory(dirpath), "The path %s is not a directory", dirpath.string());
}
bool has_invalid_chars_for_filesystem(const std::string s)
{
return std::regex_search(s, FILESYSTEM_INVALID_CHARACTERS_REGEX);
}
expected<std::string> get_contents(const fs::path& file_path) noexcept
{
std::fstream file_stream(file_path, std::ios_base::in | std::ios_base::binary);
if (file_stream.fail())
{
return std::errc::no_such_file_or_directory;
}
file_stream.seekg(0, file_stream.end);
auto length = file_stream.tellg();
file_stream.seekg(0, file_stream.beg);
if (length > SIZE_MAX)
{
return std::errc::file_too_large;
}
std::string output;
output.resize(static_cast<size_t>(length));
file_stream.read(&output[0], length);
file_stream.close();
return std::move(output);
}
fs::path find_file_recursively_up(const fs::path& starting_dir, const std::string& filename)
{
fs::path current_dir = starting_dir;
for (; !current_dir.empty(); current_dir = current_dir.parent_path())
{
const fs::path candidate = current_dir / filename;
if (fs::exists(candidate))
{
break;
}
}
return current_dir;
}
}}
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