แนะนำ Aspose.Email FOSS for C++

#include "aspose/email/foss/msg/msg_reader.hpp"
#include "aspose/email/foss/msg/msg_document.hpp"
#include <filesystem>

namespace aef = aspose::email::foss;

auto reader = aef::msg::msg_reader::from_file(
    std::filesystem::path("message.msg"), /*strict=*/false);
auto document = aef::msg::msg_document::from_reader(reader);

#include "aspose/email/foss/msg/mapi_message.hpp"
#include <filesystem>

namespace aef = aspose::email::foss;

auto message = aef::msg::mapi_message::create(
    "Quarterly status update", "Hello team,\n\nRollout summary attached.");
message.set_sender_name("Build Agent");
message.set_sender_email_address("build.agent@example.com");
message.add_recipient("alice@example.com", "Alice Example");
message.add_recipient("carol@example.com", "Carol Example",
    aef::msg::mapi_message::recipient_type_cc);
message.add_attachment("report.txt", std::vector<std::uint8_t>{'o', 'k'}, "text/plain");
message.save(std::filesystem::path("output.msg"));

auto message = aef::msg::mapi_message::from_file(
    std::filesystem::path("message.msg"), /*strict=*/false);
message.save_to_eml(std::filesystem::path("message.eml"));

auto restored = aef::msg::mapi_message::load_from_eml(std::filesystem::path("message.eml"));
restored.save(std::filesystem::path("restored.msg"));

#include "aspose/email/foss/msg/mapi_message.hpp"
#include "aspose/email/foss/msg/common_message_property_id.hpp"
#include "aspose/email/foss/msg/property_type_code.hpp"
#include <iostream>

namespace aef = aspose::email::foss;

template <typename E>
constexpr auto to_underlying(E value) noexcept {
    return static_cast<std::underlying_type_t<E>>(value);
}

auto message = aef::msg::mapi_message::from_file(
    std::filesystem::path("message.msg"), /*strict=*/false);

std::cout << "Subject: " << message.subject() << '\n';
std::cout << "From: " << message.sender_name()
           << " <" << message.sender_email_address() << ">\n";
std::cout << "Recipients: " << message.recipients().size() << '\n';

for (const auto& attachment : message.attachments()) {
    std::cout << "- " << attachment.filename
               << " (" << attachment.mime_type << ", "
               << attachment.data.size() << " bytes)\n";
}

const auto display_cc = message.get_property_value(
    to_underlying(aef::msg::common_message_property_id::display_cc),
    to_underlying(aef::msg::property_type_code::ptyp_string));

#include "aspose/email/foss/cfb/cfb_reader.hpp"
#include <iostream>

namespace aef = aspose::email::foss;

auto cfb = aef::cfb::cfb_reader::from_file(std::filesystem::path("message.msg"));
std::cout << "Directory entries: " << cfb.directory_entry_count() << '\n';
std::cout << "Storages: " << cfb.storage_ids().size() << '\n';
std::cout << "Streams: " << cfb.stream_ids().size() << '\n';

#include "aspose/email/foss/msg/mapi_message.hpp"
#include <filesystem>
#include <vector>
#include <cstdint>

namespace aef = aspose::email::foss;

int main() {
    auto message = aef::msg::mapi_message::create("Hello from C++", "Body text here");
    message.set_sender_name("Alice");
    message.set_sender_email_address("alice@example.com");
    message.add_recipient("bob@example.com", "Bob");
    message.add_attachment("note.txt", std::vector<std::uint8_t>{'a', 'b', 'c'}, "text/plain");
    message.save(std::filesystem::path("hello.msg"));

    auto loaded = aef::msg::mapi_message::from_file(
        std::filesystem::path("hello.msg"), /*strict=*/false);
    loaded.save_to_eml(std::filesystem::path("hello.eml"));

    return 0;
}