409 lines
13 KiB
Rust
409 lines
13 KiB
Rust
/*
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* meli - melib
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*
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* Copyright 2019-2020 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 crate::parsec::*;
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use crate::UnixTimestamp;
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use std::borrow::Cow;
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use std::convert::TryFrom;
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pub use query_parser::query;
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use Query::*;
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#[derive(Debug, PartialEq, Clone, Serialize)]
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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 trait QueryTrait {
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fn is_match(&self, query: &Query) -> bool;
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}
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impl QueryTrait for crate::Envelope {
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fn is_match(&self, query: &Query) -> bool {
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use Query::*;
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match query {
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Before(timestamp) => self.date() < *timestamp,
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After(timestamp) => self.date() > *timestamp,
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Between(timestamp_a, timestamp_b) => {
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self.date() > *timestamp_a && self.date() < *timestamp_b
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}
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On(timestamp) => {
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self.date() > timestamp.saturating_sub(60 * 60 * 24)
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&& self.date() < *timestamp + 60 * 60 * 24
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}
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From(s) => self.other_headers()["From"].contains(s),
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To(s) => self.other_headers()["To"].contains(s),
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Cc(s) => self.other_headers()["Cc"].contains(s),
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Bcc(s) => self.other_headers()["Bcc"].contains(s),
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AllAddresses(s) => {
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self.is_match(&From(s.clone()))
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|| self.is_match(&To(s.clone()))
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|| self.is_match(&Cc(s.clone()))
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|| self.is_match(&Bcc(s.clone()))
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}
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Flags(v) => v.iter().any(|s| self.flags() == s.as_str()),
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Subject(s) => self.other_headers()["Subject"].contains(s),
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HasAttachment => self.has_attachments(),
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And(q_a, q_b) => self.is_match(q_a) && self.is_match(q_b),
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Or(q_a, q_b) => self.is_match(q_a) || self.is_match(q_b),
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Not(q) => !self.is_match(q),
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_ => false,
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}
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}
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}
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impl TryFrom<&str> for Query {
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type Error = crate::error::MeliError;
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fn try_from(t: &str) -> crate::error::Result<Query> {
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query()
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.parse_complete(t)
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.map(|(_, q)| q)
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.map_err(|err| err.into())
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}
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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(Query::Subject)
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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(Query::From)
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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(Query::To)
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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(Query::Cc)
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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(Query::Bcc)
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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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either(
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match_literal_anycase("flags:"),
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match_literal_anycase("tags:"),
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),
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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(Flags)
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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 melib::search::query;
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/// use melib::search::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_else(|_| from().parse(input))
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.or_else(|_| to().parse(input))
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.or_else(|_| cc().parse(input))
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.or_else(|_| bcc().parse(input))
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.or_else(|_| subject().parse(input))
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.or_else(|_| flags().parse(input))
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.or_else(|_| 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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assert_eq!(
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query().parse_complete("flags:test,testtest"),
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query().parse_complete("tags:test,testtest")
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);
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assert_eq!(
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query().parse_complete("flags:seen"),
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query().parse_complete("tags:seen")
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);
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assert_eq!(
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Ok(("", Flags(vec!["f".to_string()]))),
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query().parse_complete("tags:f")
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);
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}
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}
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#[inline(always)]
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pub fn escape_double_quote(w: &str) -> Cow<str> {
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if w.contains('"') {
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Cow::from(w.replace('"', "\"\""))
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} else {
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Cow::from(w)
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}
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}
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use serde::{de, Deserialize, Deserializer};
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impl<'de> Deserialize<'de> for Query {
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fn deserialize<D>(deserializer: D) -> std::result::Result<Self, D::Error>
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where
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D: Deserializer<'de>,
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{
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let s = <String>::deserialize(deserializer)?;
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let ret = query()
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.parse(&s)
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.map(|(_, q)| q)
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.map_err(|err| de::Error::custom(format!("invalid query value: {}", err)));
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ret
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}
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}
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