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157 lines
5.4 KiB
Rust
157 lines
5.4 KiB
Rust
/*
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* Copyright (c) 2020-2023, Stalwart Labs Ltd.
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*
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* This file is part of the Stalwart Sieve Interpreter.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* This program 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 Affero General Public License for more details.
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* in the LICENSE file at the top-level directory of this distribution.
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* You can be released from the requirements of the AGPLv3 license by
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* purchasing a commercial license. Please contact licensing@stalw.art
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* for more details.
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*/
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use crate::sieve::{
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compiler::{
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grammar::actions::action_flags::{Action, EditFlags},
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Value, VariableType,
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},
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Context,
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};
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impl EditFlags {
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pub(crate) fn exec(&self, ctx: &mut Context) {
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let mut var_name_ = None;
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let var_name = self.name.as_ref().unwrap_or_else(|| {
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var_name_.get_or_insert_with(|| VariableType::Global("__flags".to_string()))
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});
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match &self.action {
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Action::Set => {
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let mut flags_lc = Vec::new();
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let mut flags = String::new();
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ctx.tokenize_flags(&self.flags, |flag| {
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let flag_lc = flag.to_lowercase();
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if !flags_lc.contains(&flag_lc) {
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if !flags.is_empty() {
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flags.push(' ');
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}
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flags.push_str(flag);
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flags_lc.push(flag_lc);
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}
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false
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});
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ctx.set_variable(var_name, flags.into());
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}
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Action::Add => {
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let mut new_flags = ctx
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.get_variable(var_name)
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.map(|v| v.to_cow())
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.unwrap_or_default()
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.into_owned();
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let mut current_flags = new_flags
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.split(' ')
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.map(|f| f.to_lowercase())
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.collect::<Vec<_>>();
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ctx.tokenize_flags(&self.flags, |flag| {
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let flag_lc = flag.to_lowercase();
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if !current_flags.contains(&flag_lc) {
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if !new_flags.is_empty() {
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new_flags.push(' ');
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}
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new_flags.push_str(flag);
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current_flags.push(flag_lc);
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}
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false
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});
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ctx.set_variable(var_name, new_flags.into());
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}
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Action::Remove => {
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let mut current_flags = Vec::new();
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let mut current_flags_lc = Vec::new();
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let flags = ctx
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.get_variable(var_name)
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.map(|v| v.to_cow().into_owned())
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.unwrap_or_default();
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for flag in flags.split(' ') {
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current_flags.push(flag);
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current_flags_lc.push(flag.to_lowercase());
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}
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ctx.tokenize_flags(&self.flags, |flag| {
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let flag = flag.to_lowercase();
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if let Some(pos) = current_flags_lc.iter().position(|lflag| lflag == &flag) {
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current_flags.swap_remove(pos);
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current_flags_lc.swap_remove(pos);
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}
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false
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});
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ctx.set_variable(var_name, current_flags.join(" ").into());
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}
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}
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}
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}
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impl<'x> Context<'x> {
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pub(crate) fn tokenize_flags(
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&self,
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strings: &[Value],
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mut cb: impl FnMut(&str) -> bool,
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) -> bool {
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for (pos, string) in strings.iter().enumerate() {
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let flag = self.eval_value(string).into_cow();
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if !flag.is_empty() {
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if pos == 0 && strings.len() == 1 {
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for flag in flag.split_ascii_whitespace() {
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if !flag.is_empty() && cb(flag) {
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return true;
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}
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}
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} else if cb(flag.trim()) {
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return true;
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}
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}
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}
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false
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}
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pub(crate) fn get_local_flags(&self, strings: &[Value]) -> Vec<String> {
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let mut flags = Vec::new();
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self.tokenize_flags(strings, |flag| {
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flags.push(flag.to_string());
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false
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});
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flags
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}
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pub(crate) fn get_global_flags(&self) -> Vec<String> {
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match self.vars_global.get("__flags") {
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Some(flags) if !flags.is_empty() => flags
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.to_cow()
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.split(' ')
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.map(|s| s.to_string())
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.collect::<Vec<String>>(),
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_ => Vec::new(),
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}
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}
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pub(crate) fn get_local_or_global_flags(&self, strings: &[Value]) -> Vec<String> {
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if strings.is_empty() {
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self.get_global_flags()
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} else {
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self.get_local_flags(strings)
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}
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}
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}
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