custom_parser.rs - mozsearch

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/*

 * Copyright Stalwart Labs Ltd. See the COPYING

 * file at the top-level directory of this distribution.

 * Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or

 * https://www.apache.org/licenses/LICENSE-2.0> or the MIT license

 * <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your

 * option. This file may not be copied, modified, or distributed

 * except according to those terms.

*/

use mail_parser::{HeaderName, MessageParser};

const MESSAGE: &str = r#"From: Art Vandelay <art@vandelay.com> (Vandelay Industries)

To: "Colleagues": "James Smythe" <james@vandelay.com>; Friends:

    jane@example.com, =?UTF-8?Q?John_Sm=C3=AEth?= <john@example.com>;

Date: Sat, 20 Nov 2021 14:22:01 -0800

Subject: Why not both importing AND exporting? =?utf-8?b?4pi6?=

Content-Type: multipart/mixed; boundary="festivus";

--festivus

Content-Type: text/html; charset="us-ascii"

Content-Transfer-Encoding: base64

PGh0bWw+PHA+SSB3YXMgdGhpbmtpbmcgYWJvdXQgcXVpdHRpbmcgdGhlICZsZHF1bztle

HBvcnRpbmcmcmRxdW87IHRvIGZvY3VzIGp1c3Qgb24gdGhlICZsZHF1bztpbXBvcnRpbm

cmcmRxdW87LDwvcD48cD5idXQgdGhlbiBJIHRob3VnaHQsIHdoeSBub3QgZG8gYm90aD8

gJiN4MjYzQTs8L3A+PC9odG1sPg==

--festivus

Content-Type: message/rfc822

From: "Cosmo Kramer" <kramer@kramerica.com>

Subject: Exporting my book about coffee tables

Content-Type: multipart/mixed; boundary="giddyup";

--giddyup

Content-Type: text/plain; charset="utf-16"

Content-Transfer-Encoding: quoted-printable

=FF=FE=0C!5=D8"=DD5=D8)=DD5=D8-=DD =005=D8*=DD5=D8"=DD =005=D8"=

=DD5=D85=DD5=D8-=DD5=D8,=DD5=D8/=DD5=D81=DD =005=D8*=DD5=D86=DD =

=005=D8=1F=DD5=D8,=DD5=D8,=DD5=D8(=DD =005=D8-=DD5=D8)=DD5=D8"=

=DD5=D8=1E=DD5=D80=DD5=D8"=DD!=00

--giddyup

Content-Type: image/gif; name*1="about "; name*0="Book ";

              name*2*=utf-8''%e2%98%95 tables.gif

Content-Transfer-Encoding: Base64

Content-Disposition: attachment

R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7

--giddyup--

--festivus--

"#;

fn main() {

    // Parse only the message headers

    let _headers = MessageParser::new()

        .parse_headers(MESSAGE)

        .unwrap()

        .headers();

    // Parse only the message body, ignoring all headers (except MIME headers, which are required to parse the body)

    let _message = MessageParser::new()

        .with_mime_headers()

        .default_header_ignore()

        .parse(MESSAGE)

        .unwrap();

    // Parse only To, From, Date, and Subject headers. All other headers are parsed as raw.

    let _message = MessageParser::new()

        .with_mime_headers()

        .header_text(HeaderName::Subject)

        .header_address(HeaderName::From)

        .header_address(HeaderName::To)

        .header_date(HeaderName::Date)

        .default_header_raw()

        .parse(MESSAGE)

        .unwrap();