add unrule

src/config.rs

@@ -27,7 +27,7 @@ use crate::{
         command::{CommandError, HlwmCommand},
         hook::Hook,
         key::{Key, KeyParseError, KeyUnbind, Keybind, MouseButton, Mousebind, MousebindAction},
-        rule::{Condition, Consequence, FloatPlacement, Rule},
+        rule::{Condition, Consequence, FloatPlacement, Rule, Unrule},
         setting::{FrameLayout, Setting, ShowFrameDecoration, SmartFrameSurroundings},
         theme::ThemeAttr,
         window::Window,
@@ -298,11 +298,9 @@ impl Config {
     }
 
     fn rule_command_set(&self) -> Vec<HlwmCommand> {
-        info!("loading rule command set");
+        [HlwmCommand::Unrule(Unrule::All)]
-        self.rules
-            .clone()
             .into_iter()
-            .map(|r| HlwmCommand::Rule(r))
+            .chain(self.rules.clone().into_iter().map(|r| HlwmCommand::Rule(r)))
             .collect()
     }
 

src/hlwm/command.rs

@@ -12,7 +12,7 @@ use super::{
     hook::Hook,
     key::{KeyUnbind, Keybind, Mousebind},
     pad::Pad,
-    rule::Rule,
+    rule::{Rule, Unrule},
     setting::{FrameLayout, Setting, SettingName},
     split,
     window::Window,
@@ -199,6 +199,9 @@ pub enum HlwmCommand {
     },
     #[strum(serialize = "sprintf")]
     Sprintf(Vec<String>),
+    /// Removes all rules either with the given label, or all of them
+    /// (See [Unrule])
+    Unrule(Unrule),
 }
 
 impl FromStr for Box<HlwmCommand> {
@@ -573,6 +576,7 @@ impl HlwmCommand {
                 })
             }
             HlwmCommand::Sprintf(_) => parse!([Vec<String>] => Sprintf),
+            HlwmCommand::Unrule(_) => parse!(FromStr => Unrule),
         }?;
 
         assert_eq!(command.to_string(), parsed_command.to_string());
@@ -833,6 +837,7 @@ impl ToCommandString for HlwmCommand {
                 .chain(args.into_iter().cloned())
                 .collect::<Vec<_>>()
                 .join("\t"),
+            HlwmCommand::Unrule(unrule) => format!("{self}\t{unrule}"),
         };
         if let Some(s) = cmd_string.strip_suffix('\t') {
             return s.to_string();
@@ -1149,6 +1154,10 @@ mod test {
                     ),
                     "sprintf\tX\ttag=%s\ttags.focus.name\trule\tonce\tX".into(),
                 ),
+                HlwmCommand::Unrule(_) => (
+                    HlwmCommand::Unrule(super::Unrule::All),
+                    "unrule\t--all".into(),
+                ),
             })
             .collect::<Vec<_>>();
         for (command, expected_string) in commands {

src/hlwm/rule.rs

@@ -1,5 +1,6 @@
 use std::{
     borrow::BorrowMut,
+    convert::Infallible,
     fmt::{Display, Write},
     str::FromStr,
 };
@@ -634,6 +635,38 @@ macro_rules! rule {
 	}
 }
 
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub enum Unrule {
+    All,
+    Rule(String),
+}
+
+impl Display for Unrule {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Unrule::All => f.write_str("--all"),
+            Unrule::Rule(rule) => f.write_str(&rule),
+        }
+    }
+}
+
+impl Default for Unrule {
+    fn default() -> Self {
+        Unrule::All
+    }
+}
+
+impl FromStr for Unrule {
+    type Err = Infallible;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        match s {
+            "--all" | "-F" => Ok(Self::All),
+            _ => Ok(Self::Rule(s.to_string())),
+        }
+    }
+}
+
 #[cfg(test)]
 mod test {
     use serde::{Deserialize, Serialize};