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Diffstat (limited to 'lib/domain/libimagmail/src/mail.rs')
-rw-r--r-- | lib/domain/libimagmail/src/mail.rs | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/lib/domain/libimagmail/src/mail.rs b/lib/domain/libimagmail/src/mail.rs new file mode 100644 index 00000000..6ee4d57a --- /dev/null +++ b/lib/domain/libimagmail/src/mail.rs @@ -0,0 +1,137 @@ +// +// imag - the personal information management suite for the commandline +// Copyright (C) 2015, 2016 Matthias Beyer <mail@beyermatthias.de> and contributors +// +// This library is free software; you can redistribute it and/or +// modify it under the terms of the GNU Lesser General Public +// License as published by the Free Software Foundation; version +// 2.1 of the License. +// +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public +// License along with this library; if not, write to the Free Software +// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA +// + +use std::path::Path; +use std::path::PathBuf; +use std::fs::File; +use std::io::Read; + +use libimagstore::store::Store; +use libimagref::reference::Ref; +use libimagref::flags::RefFlags; + +use email::MimeMessage; +use email::results::ParsingResult as EmailParsingResult; + +use hasher::MailHasher; +use result::Result; +use error::{MapErrInto, MailErrorKind as MEK}; + +struct Buffer(String); + +impl Buffer { + pub fn parsed(&self) -> EmailParsingResult<MimeMessage> { + MimeMessage::parse(&self.0) + } +} + +impl From<String> for Buffer { + fn from(data: String) -> Buffer { + Buffer(data) + } +} + +pub struct Mail<'a>(Ref<'a>, Buffer); + +impl<'a> Mail<'a> { + + /// Imports a mail from the Path passed + pub fn import_from_path<P: AsRef<Path>>(store: &Store, p: P) -> Result<Mail> { + let h = MailHasher::new(); + let f = RefFlags::default().with_content_hashing(true).with_permission_tracking(false); + let p = PathBuf::from(p.as_ref()); + + Ref::create_with_hasher(store, p, f, h) + .map_err_into(MEK::RefCreationError) + .and_then(|reference| { + reference.fs_file() + .map_err_into(MEK::RefHandlingError) + .and_then(|path| File::open(path).map_err_into(MEK::IOError)) + .and_then(|mut file| { + let mut s = String::new(); + file.read_to_string(&mut s) + .map(|_| s) + .map_err_into(MEK::IOError) + }) + .map(Buffer::from) + .map(|buffer| Mail(reference, buffer)) + }) + } + + /// Opens a mail by the passed hash + pub fn open<S: AsRef<str>>(store: &Store, hash: S) -> Result<Option<Mail>> { + Ref::get_by_hash(store, String::from(hash.as_ref())) + .map_err_into(MEK::FetchByHashError) + .map_err_into(MEK::FetchError) + .and_then(|o| match o { + Some(r) => Mail::from_ref(r).map(Some), + None => Ok(None), + }) + + } + + /// Implement me as TryFrom as soon as it is stable + pub fn from_ref(r: Ref<'a>) -> Result<Mail> { + r.fs_file() + .map_err_into(MEK::RefHandlingError) + .and_then(|path| File::open(path).map_err_into(MEK::IOError)) + .and_then(|mut file| { + let mut s = String::new(); + file.read_to_string(&mut s) + .map(|_| s) + .map_err_into(MEK::IOError) + }) + .map(Buffer::from) + .map(|buffer| Mail(r, buffer)) + } + + pub fn get_field(&self, field: &str) -> Result<Option<String>> { + self.1 + .parsed() + .map_err_into(MEK::MailParsingError) + .map(|parsed| { + parsed.headers + .iter() + .filter(|hdr| hdr.name == field) + .nth(0) + .and_then(|field| field.get_value().ok()) + }) + } + + pub fn get_from(&self) -> Result<Option<String>> { + self.get_field("From") + } + + pub fn get_to(&self) -> Result<Option<String>> { + self.get_field("To") + } + + pub fn get_subject(&self) -> Result<Option<String>> { + self.get_field("Subject") + } + + pub fn get_message_id(&self) -> Result<Option<String>> { + self.get_field("Message-ID") + } + + pub fn get_in_reply_to(&self) -> Result<Option<String>> { + self.get_field("In-Reply-To") + } + +} |