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C++ के लिए Aspose.Email FOSS

C++ से Outlook MSG फ़ाइलें और CFB कंटेनर पढ़ें, बनाएं और प्रोसेस करें — मुफ्त और ओपन‑सोर्स, कोई Microsoft Outlook निर्भरता नहीं।

C++ के लिए Aspose.Email FOSS for C++ C++ के लिए Aspose.Email FOSS
for C++

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MSG और CFB फ़ाइलों के लिए ओपन-सोर्स C++ लाइब्रेरी

Aspose.Email FOSS for C++ एक MIT-लाइसेंस वाला, ओपन-सोर्स C++ लाइब्रेरी है जो Microsoft Outlook .msg फ़ाइलों और Compound File Binary (CFB) कंटेनरों के साथ काम करने के लिए है। CMake के माध्यम से हेडर शामिल करें और तुरंत ईमेल संदेशों को पढ़ना, बनाना और प्रोसेस करना शुरू करें, बिना Microsoft Outlook या किसी भी स्वामित्व वाले रनटाइम को स्थापित किए।

लाइब्रेरी दो स्तरों की पहुँच प्रदान करती है। निचले स्तर पर, cfb_reader और cfb_writer CFB बाइनरी कंटेनरों पर पूर्ण नियंत्रण देते हैं — डायरेक्टरी एंट्रीज़ को ट्रैवर्स करें, स्टोरेज नोड्स और स्ट्रीम डेटा को पढ़ें और लिखें, और कच्चे सेक्टर लेआउट का निरीक्षण करें। msg_reader और msg_writer CFB के ऊपर MSG फ़ॉर्मेट को संभालते हैं, MAPI प्रॉपर्टी स्ट्रीम्स, रिसिपिएंट टेबल्स, और अटैचमेंट सब-स्टोरेज को उजागर करते हैं। उच्च स्तर पर, mapi_message आपको नई संदेशों को शून्य से बनाने, विषय, बॉडी, रिसिपिएंट्स और अटैचमेंट्स को पढ़ने, और MSG और EML फ़ॉर्मेट के बीच रूपांतरण करने की अनुमति देता है।

यह लाइब्रेरी किसी भी प्लेटफ़ॉर्म पर C++17 कंपाइलर के साथ बनती है और इसका कोई बाहरी निर्भरता नहीं है, जिससे यह Windows, Linux, macOS, Docker कंटेनरों और एम्बेडेड सिस्टम्स के लिए उपयुक्त बनती है।

CFB Container Read and Write

  • Open CFB files: Load existing CFB containers from a file path, stream, or byte array via cfb_reader::from_file(), cfb_reader::from_stream(), or cfb_reader::from_bytes().
  • Traverse the directory tree: Enumerate storages and streams using storage_ids(), stream_ids(), and child_ids(), and navigate nested hierarchies with resolve_path().
  • Inspect nodes: Check node type with cfb_node::is_storage() and cfb_node::is_stream(), read timestamps via creation_time() and modified_time().
  • Write CFB containers: Build CFB documents programmatically with cfb_document and serialize to bytes or file via cfb_writer::to_bytes() or cfb_writer::write_file().

Where CFB Access Is Used

  • MSG file inspection: CFB is the container format for Outlook .msg files — direct CFB access enables forensic inspection and repair.
  • Custom binary formats: Any legacy application using CFB for data storage can be read or written without a COM dependency.
  • Data recovery: Traverse the full directory tree and extract raw stream bytes from damaged or non-standard CFB files.

MSG File Read and Write

  • Read MSG files: Open Outlook MSG files with msg_reader::from_file() or msg_reader::from_stream() and access the underlying MAPI property streams and attachment sub-storages.
  • Write MSG files: Produce MSG files from a msg_document with msg_writer::to_bytes() or msg_writer::write_file().
  • MSG document inspection: Access version metadata via msg_document::major_version(), msg_document::minor_version(), and check strictness with msg_document::strict().
  • Convert to CFB: Extract the underlying CFB document from an MSG file via msg_document::to_cfb_document().

Where MSG Processing Is Used

  • Email archival pipelines: Bulk-read .msg files from archive directories and extract metadata or attachments.
  • Migration tools: Convert MSG collections to standard formats for import into non-Outlook systems.
  • Legal discovery: Parse raw MAPI property streams to extract all message fields including non-standard properties.

High-Level MAPI Message API

  • Create messages: Build a complete email with mapi_message::create(), then set subject, body, and HTML body via set_subject(), set_body(), and set_html_body().
  • Set sender details: Configure set_sender_name(), set_sender_email_address(), and set_sender_address_type() for the outgoing message.
  • Manage attachments: Load attachments from bytes or streams with mapi_attachment::from_bytes() and mapi_attachment::from_stream(), and check for embedded messages via is_embedded_message().
  • Save and reload: Serialize with mapi_message::save() and reload with mapi_message::from_file() or mapi_message::from_stream().

Where the High-Level API Is Used

  • Automated email generation: Generate thousands of personalized MSG files from data records in batch jobs.
  • Test fixture creation: Build known-good MSG files with predictable content for integration test suites.
  • Attachment extraction: Load an MSG file, iterate attachments, and save each to disk.

EML and MIME Conversion

  • Load EML into mapi_message: Parse a standard .eml file (RFC 5322 / MIME) into a full mapi_message object via mapi_message::load_from_eml().
  • Save mapi_message as EML: Serialize a mapi_message back to MIME format with save_to_eml().
  • Round-trip fidelity: Subject, body, sender, recipients, and attachments are preserved through EML to MSG to EML round-trips.

Where EML Conversion Is Used

  • Format bridging: Receive emails as EML from mail servers and convert to MSG for Outlook-compatible storage.
  • Standards compliance: Convert proprietary MSG files to standard MIME for delivery to any mail transport.
  • Archival normalization: Normalize a mixed archive of .eml and .msg files to a single format.

Read Subject from an MSG File

Open an Outlook MSG file from a stream and print the subject — no Microsoft Outlook required.

#include <fstream>
#include <iostream>

#include "aspose/email/foss/msg/mapi_message.hpp"

int main()
{
    std::ifstream input("sample.msg", std::ios::binary);
    auto message = aspose::email::foss::msg::mapi_message::from_stream(input);
    std::cout << message.subject() << '\n';
}

Create and Save an MSG Message

Build a complete email with sender, recipient, and attachment, then write it to both MSG and EML formats.

#include <fstream>

#include "aspose/email/foss/msg/mapi_message.hpp"

int main()
{
    auto message = aspose::email::foss::msg::mapi_message::create("Hello", "Body");
    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");

    std::ofstream msg_output("hello.msg", std::ios::binary);
    message.save(msg_output);

    std::ofstream eml_output("hello.eml", std::ios::binary);
    message.save_to_eml(eml_output);
}
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