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#include <jinja2cpp/filesystem_handler.h>
#include <jinja2cpp/string_helpers.h>
#include <boost/filesystem/path.hpp>
#include <boost/filesystem/operations.hpp>
#include <sstream>
#include <fstream>
namespace jinja2
{
using TargetFileStream = std::variant<CharFileStreamPtr*, WCharFileStreamPtr*>;
struct FileContentConverter
{
void operator() (const std::string& content, CharFileStreamPtr* sPtr) const
{
sPtr->reset(new std::istringstream(content));
}
void operator() (const std::wstring& content, WCharFileStreamPtr* sPtr) const
{
sPtr->reset(new std::wistringstream(content));
}
void operator() (const std::wstring&, CharFileStreamPtr*) const
{
// CharFileStreamPtr stream(new std::istringstream(content), [](std::istream* s) {delete static_cast<std::istringstream>(s);});
// std::swap(*sPtr, stream);
}
void operator() (const std::string&, WCharFileStreamPtr*) const
{
// WCharFileStreamPtr stream(new std::wistringstream(content), [](std::wistream* s) {delete static_cast<std::wistringstream>(s);});
// std::swap(*sPtr, stream);
}
};
void MemoryFileSystem::AddFile(std::string fileName, std::string fileContent)
{
m_filesMap[std::move(fileName)] = FileContent{std::move(fileContent), {}};
}
void MemoryFileSystem::AddFile(std::string fileName, std::wstring fileContent)
{
m_filesMap[std::move(fileName)] = FileContent{ {}, std::move(fileContent) };
}
CharFileStreamPtr MemoryFileSystem::OpenStream(const std::string& name) const
{
CharFileStreamPtr result(nullptr, [](std::istream* s) {delete static_cast<std::istringstream*>(s);});
auto p = m_filesMap.find(name);
if (p == m_filesMap.end())
return result;
auto& content = p->second;
if (!content.narrowContent && !content.wideContent)
return result;
if (!content.narrowContent)
content.narrowContent = ConvertString<std::string>(content.wideContent.value());
result.reset(new std::istringstream(content.narrowContent.value()));
return result;
}
WCharFileStreamPtr MemoryFileSystem::OpenWStream(const std::string& name) const
{
WCharFileStreamPtr result(nullptr, [](std::wistream* s) {delete static_cast<std::wistringstream*>(s);});
auto p = m_filesMap.find(name);
if (p == m_filesMap.end())
return result;
auto& content = p->second;
if (!content.narrowContent && !content.wideContent)
return result;
if (!content.wideContent)
content.wideContent = ConvertString<std::wstring>(content.narrowContent.value());
result.reset(new std::wistringstream(content.wideContent.value()));
return result;
}
std::optional<std::chrono::system_clock::time_point> MemoryFileSystem::GetLastModificationDate(const std::string&) const
{
return std::optional<std::chrono::system_clock::time_point>();
}
bool MemoryFileSystem::IsEqual(const IComparable& other) const
{
auto* ptr = dynamic_cast<const MemoryFileSystem*>(&other);
if (!ptr)
return false;
return m_filesMap == ptr->m_filesMap;
}
RealFileSystem::RealFileSystem(std::string rootFolder)
: m_rootFolder(std::move(rootFolder))
{
}
std::string RealFileSystem::GetFullFilePath(const std::string& name) const
{
boost::filesystem::path root(m_rootFolder);
root /= name;
return root.string();
}
CharFileStreamPtr RealFileSystem::OpenStream(const std::string& name) const
{
auto filePath = GetFullFilePath(name);
CharFileStreamPtr result(new std::ifstream(filePath), [](std::istream* s) {delete static_cast<std::ifstream*>(s);});
if (result->good())
return result;
return CharFileStreamPtr(nullptr, [](std::istream*){});
}
WCharFileStreamPtr RealFileSystem::OpenWStream(const std::string& name) const
{
auto filePath = GetFullFilePath(name);
WCharFileStreamPtr result(new std::wifstream(filePath), [](std::wistream* s) {delete static_cast<std::wifstream*>(s);});
if (result->good())
return result;
return WCharFileStreamPtr(nullptr, [](std::wistream*){;});
}
std::optional<std::chrono::system_clock::time_point> RealFileSystem::GetLastModificationDate(const std::string& name) const
{
boost::filesystem::path root(m_rootFolder);
root /= name;
auto modify_time = boost::filesystem::last_write_time(root);
return std::chrono::system_clock::from_time_t(modify_time);
}
CharFileStreamPtr RealFileSystem::OpenByteStream(const std::string& name) const
{
auto filePath = GetFullFilePath(name);
CharFileStreamPtr result(new std::ifstream(filePath, std::ios_base::binary), [](std::istream* s) {delete static_cast<std::ifstream*>(s);});
if (result->good())
return result;
return CharFileStreamPtr(nullptr, [](std::istream*){});
}
bool RealFileSystem::IsEqual(const IComparable& other) const
{
auto* ptr = dynamic_cast<const RealFileSystem*>(&other);
if (!ptr)
return false;
return m_rootFolder == ptr->m_rootFolder;
}
} // namespace jinja2
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