436 lines
13 KiB
Rust
436 lines
13 KiB
Rust
/*
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* meli - ui crate.
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*
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* Copyright 2017-2018 Manos Pitsidianakis
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*
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* This file is part of meli.
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*
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* meli is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* meli is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with meli. If not, see <http://www.gnu.org/licenses/>.
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*/
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use melib::email::UnixTimestamp;
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use melib::parsec::*;
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use melib::{
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backends::{FolderHash, MailBackend},
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email::EnvelopeHash,
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thread::{SortField, SortOrder},
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Result, StackVec,
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};
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use std::sync::{Arc, RwLock};
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pub use query_parser::query;
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use Query::*;
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#[derive(Debug, PartialEq)]
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pub enum Query {
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Before(UnixTimestamp),
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After(UnixTimestamp),
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Between(UnixTimestamp, UnixTimestamp),
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On(UnixTimestamp),
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/* * * * */
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From(String),
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To(String),
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Cc(String),
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Bcc(String),
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InReplyTo(String),
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References(String),
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AllAddresses(String),
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/* * * * */
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Body(String),
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Subject(String),
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AllText(String),
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/* * * * */
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Flags(Vec<String>),
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HasAttachment,
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And(Box<Query>, Box<Query>),
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Or(Box<Query>, Box<Query>),
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Not(Box<Query>),
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}
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pub mod query_parser {
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use super::*;
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fn subject<'a>() -> impl Parser<'a, Query> {
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prefix(
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whitespace_wrap(match_literal("subject:")),
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whitespace_wrap(literal()),
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)
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.map(|term| Query::Subject(term))
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}
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fn from<'a>() -> impl Parser<'a, Query> {
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prefix(
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whitespace_wrap(match_literal("from:")),
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whitespace_wrap(literal()),
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)
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.map(|term| Query::From(term))
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}
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fn to<'a>() -> impl Parser<'a, Query> {
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prefix(
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whitespace_wrap(match_literal("to:")),
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whitespace_wrap(literal()),
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)
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.map(|term| Query::To(term))
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}
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fn cc<'a>() -> impl Parser<'a, Query> {
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prefix(
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whitespace_wrap(match_literal("cc:")),
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whitespace_wrap(literal()),
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)
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.map(|term| Query::Cc(term))
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}
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fn bcc<'a>() -> impl Parser<'a, Query> {
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prefix(
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whitespace_wrap(match_literal("bcc:")),
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whitespace_wrap(literal()),
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)
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.map(|term| Query::Bcc(term))
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}
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fn or<'a>() -> impl Parser<'a, Query> {
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move |input| {
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whitespace_wrap(match_literal_anycase("or"))
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.parse(input)
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.and_then(|(last_input, _)| query().parse(debug!(last_input)))
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}
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}
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fn not<'a>() -> impl Parser<'a, Query> {
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move |input| {
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whitespace_wrap(either(
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match_literal_anycase("not"),
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match_literal_anycase("!"),
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))
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.parse(input)
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.and_then(|(last_input, _)| query().parse(debug!(last_input)))
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}
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}
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fn and<'a>() -> impl Parser<'a, Query> {
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move |input| {
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whitespace_wrap(match_literal_anycase("and"))
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.parse(input)
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.and_then(|(last_input, _)| query().parse(debug!(last_input)))
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}
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}
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fn has_attachment<'a>() -> impl Parser<'a, Query> {
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move |input| {
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whitespace_wrap(match_literal_anycase("has:attachment"))
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.map(|()| Query::HasAttachment)
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.parse(input)
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}
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}
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fn literal<'a>() -> impl Parser<'a, String> {
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move |input| either(quoted_string(), string()).parse(input)
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}
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fn parentheses_query<'a>() -> impl Parser<'a, Query> {
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move |input| {
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delimited(
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whitespace_wrap(match_literal("(")),
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whitespace_wrap(query()),
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whitespace_wrap(match_literal(")")),
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)
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.parse(input)
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}
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}
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fn flags<'a>() -> impl Parser<'a, Query> {
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move |input| {
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whitespace_wrap(either(
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match_literal_anycase("flags:"),
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match_literal_anycase("is:"),
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))
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.parse(input)
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.and_then(|(rest, _)| {
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map(one_or_more(pred(any_char, |c| *c != ' ')), |chars| {
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chars.into_iter().collect::<String>()
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})
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.parse(rest)
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})
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.and_then(|(rest, flags_list)| {
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if let Ok(r) = flags_list
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.split(",")
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.map(|t| {
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either(quoted_string(), string())
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.parse_complete(t)
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.map(|(_, r)| r)
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})
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.collect::<std::result::Result<Vec<String>, &str>>()
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.map(|v| Flags(v))
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{
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Ok((rest, r))
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} else {
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Err(rest)
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}
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})
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}
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}
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/// Parser from `String` to `Query`.
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///
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/// # Invocation
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/// ```
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/// use ui::cache::query;
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/// use ui::cache::Query;
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/// use melib::parsec::Parser;
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///
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/// let input = "test";
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/// let query = query().parse(input);
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/// assert_eq!(Ok(("", Query::AllText("test".to_string()))), query);
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/// ```
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pub fn query<'a>() -> impl Parser<'a, Query> {
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move |input| {
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let (rest, query_a): (&'a str, Query) = if let Ok(q) = parentheses_query()
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.parse(input)
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.or(from().parse(input))
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.or(to().parse(input))
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.or(cc().parse(input))
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.or(bcc().parse(input))
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.or(subject().parse(input))
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.or(flags().parse(input))
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.or(has_attachment().parse(input))
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{
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Ok(q)
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} else if let Ok((rest, query_a)) = not().parse(input) {
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Ok((rest, Not(Box::new(query_a))))
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} else if let Ok((rest, query_a)) = {
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let result = literal().parse(input);
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if result.is_ok()
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&& result
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.as_ref()
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.map(|(_, s)| s != "and" && s != "or" && s != "not")
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.unwrap_or(false)
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{
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result.map(|(r, s)| (r, AllText(s)))
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} else {
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Err("")
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}
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} {
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Ok((rest, query_a))
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} else {
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Err("")
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}?;
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if rest.is_empty() {
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return Ok((rest, query_a));
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}
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if let Ok((rest, query_b)) = and().parse(rest) {
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Ok((rest, And(Box::new(query_a), Box::new(query_b))))
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} else if let Ok((rest, query_b)) = or().parse(rest) {
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Ok((rest, Or(Box::new(query_a), Box::new(query_b))))
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} else if let Ok((rest, query_b)) = query().parse(rest) {
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Ok((rest, Or(Box::new(query_a), Box::new(query_b))))
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} else {
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Ok((rest, query_a))
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}
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}
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}
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#[test]
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fn test_query_parsing() {
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assert_eq!(
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Err("subject: test and"),
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query().parse_complete("subject: test and")
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);
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assert_eq!(
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Ok((
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"",
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And(
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Box::new(Subject("test".to_string())),
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Box::new(AllText("i".to_string()))
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)
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)),
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query().parse_complete("subject: test and i")
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);
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assert_eq!(
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Ok(("", AllText("test".to_string()))),
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query().parse_complete("test")
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);
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assert_eq!(
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Ok(("", Subject("test".to_string()))),
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query().parse_complete("subject: test")
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);
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assert_eq!(
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Ok((
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"",
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Or(
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Box::new(Subject("wah ah ah".to_string())),
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Box::new(And(
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Box::new(From("Manos".to_string())),
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Box::new(From("Sia".to_string()))
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))
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)
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)),
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query().parse_complete("subject: \"wah ah ah\" or (from: Manos and from: Sia)")
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);
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assert_eq!(
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Ok((
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"",
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Or(
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Box::new(Subject("wah".to_string())),
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Box::new(And(
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Box::new(From("Manos".to_string())),
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Box::new(Or(
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Box::new(Subject("foo".to_string())),
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Box::new(Subject("bar".to_string())),
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))
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))
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)
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)),
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query()
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.parse_complete("subject: wah or (from: Manos and (subject:foo or subject: bar))")
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);
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assert_eq!(
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Ok((
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"",
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And(
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Box::new(From("Manos".to_string())),
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Box::new(And(
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Box::new(Or(
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Box::new(Subject("foo".to_string())),
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Box::new(Subject("bar".to_string()))
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)),
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Box::new(Or(
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Box::new(From("woo".to_string())),
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Box::new(From("my".to_string()))
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))
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))
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)
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)),
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query().parse_complete(
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"(from: Manos and (subject:foo or subject: bar) and (from:woo or from:my))"
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)
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);
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assert_eq!(
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Ok(("", Flags(vec!["test".to_string(), "testtest".to_string()]))),
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query().parse_complete("flags:test,testtest")
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);
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}
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}
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pub fn query_to_imap(q: &Query) -> String {
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fn rec(q: &Query, s: &mut String) {
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use crate::sqlite3::escape_double_quote;
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match q {
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Subject(t) => {
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s.push_str(" SUBJECT \"");
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s.extend(escape_double_quote(t).chars());
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s.push_str("\"");
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}
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From(t) => {
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s.push_str(" FROM \"");
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s.extend(escape_double_quote(t).chars());
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s.push_str("\"");
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}
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To(t) => {
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s.push_str(" TO \"");
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s.extend(escape_double_quote(t).chars());
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s.push_str("\"");
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}
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Cc(t) => {
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s.push_str(" CC \"");
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s.extend(escape_double_quote(t).chars());
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s.push_str("\"");
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}
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Bcc(t) => {
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s.push_str(" BCC \"");
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s.extend(escape_double_quote(t).chars());
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s.push_str("\"");
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}
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AllText(t) => {
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s.push_str(" TEXT \"");
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s.extend(escape_double_quote(t).chars());
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s.push_str("\"");
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}
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Flags(v) => {
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for f in v {
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match f.as_str() {
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"draft" => {
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s.push_str(" DRAFT ");
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}
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"deleted" => {
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s.push_str(" DELETED ");
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}
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"flagged" => {
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s.push_str(" FLAGGED ");
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}
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"recent" => {
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s.push_str(" RECENT ");
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}
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"seen" | "read" => {
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s.push_str(" SEEN ");
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}
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"unseen" | "unread" => {
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s.push_str(" UNSEEN ");
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}
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"answered" => {
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s.push_str(" ANSWERED ");
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}
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"unanswered" => {
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s.push_str(" UNANSWERED ");
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}
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keyword => {
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s.push_str(" ");
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s.extend(keyword.chars());
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s.push_str(" ");
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}
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}
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}
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}
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And(q1, q2) => {
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rec(q1, s);
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s.push_str(" ");
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rec(q2, s);
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}
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Or(q1, q2) => {
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s.push_str(" OR ");
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rec(q1, s);
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s.push_str(" ");
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rec(q2, s);
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}
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Not(q) => {
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s.push_str(" NOT ");
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rec(q, s);
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}
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_ => {}
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}
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}
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let mut ret = String::new();
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rec(q, &mut ret);
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ret
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}
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pub fn imap_search(
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term: &str,
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(sort_field, sort_order): (SortField, SortOrder),
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folder_hash: FolderHash,
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backend: &Arc<RwLock<Box<dyn MailBackend>>>,
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) -> Result<StackVec<EnvelopeHash>> {
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let query = query().parse(term)?.1;
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let backend_lck = backend.read().unwrap();
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let b = (*backend_lck).as_any();
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if let Some(imap_backend) = b.downcast_ref::<melib::backends::ImapType>() {
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imap_backend.search(query_to_imap(&query), folder_hash)
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} else {
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panic!("Could not downcast ImapType backend. BUG");
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}
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}
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