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/*
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* meli - pager conf module
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*
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* Copyright 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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//! Settings for the pager function.
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use super::default_vals::*;
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use super::deserializers::*;
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use super::DotAddressable;
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use melib::{MeliError, Result, ToggleFlag};
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/// Settings for the pager function.
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#[derive(Debug, Deserialize, Clone, Serialize)]
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#[serde(deny_unknown_fields)]
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pub struct PagerSettings {
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/// Number of context lines when going to next page.
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/// Default: 0
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#[serde(default = "zero_val", alias = "pager-context")]
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pub pager_context: usize,
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/// Stop at the end instead of displaying next mail.
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/// Default: false
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#[serde(default = "false_val", alias = "pager-stop")]
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pub pager_stop: bool,
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/// Always show headers when scrolling.
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/// Default: true
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#[serde(default = "true_val", alias = "headers-sticky")]
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pub headers_sticky: bool,
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/// The height of the pager in mail view, in percent.
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/// Default: 80
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#[serde(default = "eighty_val", alias = "pager-ratio")]
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pub pager_ratio: usize,
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/// A command to pipe mail output through for viewing in pager.
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/// Default: None
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#[serde(default = "none", deserialize_with = "non_empty_string")]
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pub filter: Option<String>,
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/// A command to pipe html output before displaying it in a pager
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/// Default: None
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#[serde(
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default = "none",
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deserialize_with = "non_empty_string",
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alias = "html-filter"
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)]
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pub html_filter: Option<String>,
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/// Respect "format=flowed"
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/// Default: true
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#[serde(default = "true_val", alias = "format-flowed")]
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pub format_flowed: bool,
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/// Split long lines that would overflow on the x axis.
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/// Default: true
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#[serde(default = "true_val", alias = "split-long-lines")]
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pub split_long_lines: bool,
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/// Minimum text width in columns.
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/// Default: 80
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#[serde(default = "eighty_val", alias = "minimum-width")]
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pub minimum_width: usize,
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/// Choose `text/html` alternative if `text/plain` is empty in `multipart/alternative`
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/// attachments.
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/// Default: true
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#[serde(
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default = "internal_value_true",
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alias = "auto-choose-multipart-alternative"
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)]
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pub auto_choose_multipart_alternative: ToggleFlag,
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/// Show Date: in my timezone
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/// Default: true
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#[serde(default = "internal_value_true", alias = "show-date-in-my-timezone")]
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pub show_date_in_my_timezone: ToggleFlag,
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/// A command to launch URLs with. The URL will be given as the first argument of the command.
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/// Default: None
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#[serde(default = "none", deserialize_with = "non_empty_string")]
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pub url_launcher: Option<String>,
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/// A command to open html files.
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/// Default: None
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#[serde(
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default = "none",
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deserialize_with = "non_empty_string",
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alias = "html-open"
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)]
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pub html_open: Option<String>,
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}
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impl Default for PagerSettings {
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fn default() -> Self {
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Self {
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pager_context: 0,
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pager_stop: false,
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headers_sticky: true,
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pager_ratio: 80,
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filter: None,
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html_filter: None,
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html_open: None,
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format_flowed: true,
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split_long_lines: true,
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minimum_width: 80,
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auto_choose_multipart_alternative: ToggleFlag::InternalVal(true),
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show_date_in_my_timezone: ToggleFlag::InternalVal(true),
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url_launcher: None,
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}
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}
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}
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impl DotAddressable for PagerSettings {
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fn lookup(&self, parent_field: &str, path: &[&str]) -> Result<String> {
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match path.first() {
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Some(field) => {
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let tail = &path[1..];
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match *field {
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"pager_context" => self.pager_context.lookup(field, tail),
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"pager_stop" => self.pager_stop.lookup(field, tail),
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"headers_sticky" => self.headers_sticky.lookup(field, tail),
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"pager_ratio" => self.pager_ratio.lookup(field, tail),
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"filter" => self.filter.lookup(field, tail),
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"html_filter" => self.html_filter.lookup(field, tail),
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"html_open" => self.html_open.lookup(field, tail),
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"format_flowed" => self.format_flowed.lookup(field, tail),
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"split_long_lines" => self.split_long_lines.lookup(field, tail),
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"minimum_width" => self.minimum_width.lookup(field, tail),
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"auto_choose_multipart_alternative" => {
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self.auto_choose_multipart_alternative.lookup(field, tail)
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}
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"show_date_in_my_timezone" => self.show_date_in_my_timezone.lookup(field, tail),
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"url_launcher" => self.html_filter.lookup(field, tail),
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other => Err(MeliError::new(format!(
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"{} has no field named {}",
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parent_field, other
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))),
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}
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}
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None => Ok(toml::to_string(self).map_err(|err| err.to_string())?),
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}
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}
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}
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