2020-09-24 13:51:51 +00:00
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# melib
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[](https://github.com/meli/meli/blob/master/COPYING) [](https://crates.io/crates/melib) [](https://docs.rs/melib)
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Library for handling mail.
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## optional features
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| feature flag | dependencies | notes |
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| ---------------------- | ----------------------------------- | ------------------------ |
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| `imap_backend` | `native-tls` | |
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| `deflate_compression` | `flate2` | for use with IMAP |
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| `jmap_backend` | `isahc`, `native-tls`, `serde_json` | |
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2020-10-20 20:15:52 +00:00
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| `maildir_backend` | `notify` | |
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| `mbox_backend` | `notify` | |
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| `notmuch_backend` | `notify` | |
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| `sqlite` | `rusqlite` | used in IMAP cache |
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| `unicode_algorithms` | `unicode-segmentation` | linebreaking algo etc |
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| `vcard` | | vcard parsing |
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| `gpgme` | | GPG use with libgpgme |
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2020-09-24 13:51:51 +00:00
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| `smtp` | `native-tls`, `base64` | async SMTP communication |
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## Example: Parsing bytes into an `Envelope`
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An `Envelope` represents the information you can get from an email's headers
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and body structure. Addresses in `To`, `From` fields etc are parsed into
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`Address` types.
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```rust
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use melib::{Attachment, Envelope};
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2021-01-13 18:59:23 +00:00
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let raw_mail = r#"From: "some name" <some@example.com>
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To: "me" <myself@example.com>
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2020-09-24 13:51:51 +00:00
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Cc:
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Subject: =?utf-8?Q?gratuitously_encoded_subject?=
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2021-01-13 18:59:23 +00:00
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Message-ID: <h2g7f.z0gy2pgaen5m@example.com>
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2020-09-24 13:51:51 +00:00
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MIME-Version: 1.0
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Content-Type: multipart/mixed; charset="utf-8";
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boundary="bzz_bzz__bzz__"
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This is a MIME formatted message with attachments. Use a MIME-compliant client to view it properly.
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--bzz_bzz__bzz__
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hello world.
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--bzz_bzz__bzz__
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Content-Type: image/gif; name="test_image.gif"; charset="utf-8"
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Content-Disposition: attachment
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Content-Transfer-Encoding: base64
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R0lGODdhKAAXAOfZAAABzAADzQAEzgQFtBEAxAAGxBcAxwALvRcFwAAPwBcLugATuQEUuxoNuxYQ
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sxwOvAYVvBsStSAVtx8YsRUcuhwhth4iuCQsyDAwuDc1vTc3uDg4uT85rkc9ukJBvENCvURGukdF
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wUVKt0hLuUxPvVZSvFlYu1hbt2BZuFxdul5joGhqlnNuf3FvlnBvwXJyt3Jxw3N0oXx1gH12gV99
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z317f3N7spFxwHp5wH99gYB+goF/g25+26tziIOBhWqD3oiBjICAuudkjIN+zHeC2n6Bzc1vh4eF
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iYaBw8F0kImHi4KFxYyHmIWIvI2Lj4uIvYaJyY+IuJGMi5iJl4qKxZSMmIuLxpONnpGPk42NvI2M
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1LKGl46OvZePm5ORlZiQnJqSnpaUmLyJnJuTn5iVmZyUoJGVyZ2VoZSVw5iXoZmWrO18rJiUyp6W
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opuYnKaVnZ+Xo5yZncaMoaCYpJiaqo+Z2Z2annuf5qGZpa2WoJybpZmayZ2Z0KCZypydrZ6dp6Cd
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oZ6a0aGay5ucy5+eqKGeouWMgp+b0qKbzKCfqdqPnp2ezaGgqqOgpKafqrScpp+gz6ajqKujr62j
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qayksKmmq62lsaiosqqorOyWnaqqtKeqzLGptaurta2rr7Kqtq+ssLOrt6+uuLGusuqhfbWtubCv
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ubKvs7GwurOwtPSazbevu+ali7SxtbiwvOykjLOyvLWytuCmqOankrSzvbazuLmyvrW0vre0uba1
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wLi1ury0wLm2u721wbe3wbq3vMC2vLi4wr+3w7m5w8C4xLi6yry6vsG5xbu7xcC6zMK6xry8xry+
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u8O7x729x8C9wb++yMG+wsO+vMK/w8a+y8e/zMnBzcXH18nL2///////////////////////////
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////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////ywAAAAAKAAXAAAI/gBP4Cjh
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IYMLEh0w4EgBgsMLEyFGFBEB5cOFABgzatS4AVssZAOsLOHCxooVMzCyoNmzaBOkJlS0VEDyZMjG
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mxk3XOMF60CDBgsoPABK9KcDCRImPCiQYAECAgQCRMU4VSrGCjFarBgUSJCgQ10FBTrkNRCfPnz4
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dA3UNa1btnDZqgU7Ntqzu3ej2X2mFy9eaHuhNRtMGJrhwYYN930G2K7eaNIY34U2mfJkwpgzI9Yr
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GBqwR2KSvAlMOXHnw5pTNzPdLNoWIWtU9XjGjDEYS8LAlFm1SrVvzIKj5TH0KpORSZOryPgCZgqL
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Ob+jG0YVRBErUrOiiGJ8KxgtYsh27xWL/tswnTtEbsiRVYdJNMHk4yOGhswGjR88UKjQ9Ey+/8TL
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XKKGGn7Akph/8XX2WDTTcAYfguVt9hhrEPqmzIOJ3VUheb48WJiHG6amC4i+WVJKKCimqGIoYxyj
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WWK8kKjaJ9bA18sxvXjYhourmbbMMrjI+OIn1QymDCVXANGFK4S1gQw0PxozzC+33FLLKUJq9gk1
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gyWDhyNwrMLkYGUEM4wvuLRiCiieXIJJJVlmJskcZ9TZRht1lnFGGmTMkMoonVQSSSOFAGJHHI0w
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ouiijDaaCCGQRgrpH3q4QYYXWDihxBE+7KCDDjnUIEVAADs=
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--bzz_bzz__bzz__--"#;
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let envelope = Envelope::from_bytes(raw_mail.as_bytes(), None).expect("Could not parse mail");
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assert_eq!(envelope.subject().as_ref(), "gratuitously encoded subject");
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2021-01-13 18:59:23 +00:00
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assert_eq!(envelope.message_id_display().as_ref(), "<h2g7f.z0gy2pgaen5m@example.com>");
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2020-09-24 13:51:51 +00:00
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let body = envelope.body_bytes(raw_mail.as_bytes());
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assert_eq!(body.content_type().to_string().as_str(), "multipart/mixed");
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let body_text = body.text();
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assert_eq!(body_text.as_str(), "hello world.");
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let subattachments: Vec<Attachment> = body.attachments();
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assert_eq!(subattachments.len(), 3);
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assert_eq!(subattachments[2].content_type().name().unwrap(), "test_image.gif");
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```
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