FileManager.cpp

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#include "FileManager.hpp"
 
namespace Cori {
    namespace FileSystem {
        std::string FileManager::ReadTextFile(const std::filesystem::path& filepath) {
            std::ifstream file(filepath, std::ios::in | std::ios::binary);
            if (!file) {
                CORI_CORE_ERROR("FileManager: Could not open file: '{0}'", filepath.string());
                return "";
            }
 
            // Try to get file size for pre-allocation (optimization)
            file.seekg(0, std::ios::end);
            std::streampos file_size_pos = file.tellg();
            file.seekg(0, std::ios::beg); // Seek back to the beginning
 
            // Check for errors after seeking and telling
            if (file_size_pos == static_cast<std::streampos>(-1) || !file.good()) {
                CORI_CORE_ERROR("FileManager: Error determining file size or seeking in file: '{0}'", filepath.string());
                return "";
            }
 
            auto file_size = static_cast<std::size_t>(file_size_pos);
 
            std::string content;
            if (file_size > 0) {
                content.reserve(file_size);
                content.assign(std::istreambuf_iterator<char>(file),
                    std::istreambuf_iterator<char>());
            }
            else {
                content.assign(std::istreambuf_iterator<char>(file), std::istreambuf_iterator<char>());
            }
 
            if (file.bad() || (file.fail() && !file.eof())) {
                CORI_CORE_ERROR("FileManager: Error while reading file content: '{0}'", filepath.string());
                return "";
            }
 
            return content;
        }
    }
}