Refactor config parsing files

This is a large refactor of the config parsing structure, attempting to
reduce the size of the file a bit by splitting it up into different
modules with more specific purposes.

This also fixes #2279.

1 files changed, 61 insertions, 0 deletions

diff --git a/alacritty_terminal/src/config/debug.rs b/alacritty_terminal/src/config/debug.rs
new file mode 100644
index 00000000..b7d1144f
--- /dev/null
+++ b/alacritty_terminal/src/config/debug.rs
@@ -0,0 +1,61 @@
+use log::LevelFilter;
+use serde::Deserializer;
+
+use crate::config::failure_default;
+
+/// Debugging options
+#[serde(default)]
+#[derive(Deserialize, Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
+pub struct Debug {
+    #[serde(default = "default_log_level", deserialize_with = "deserialize_log_level")]
+    pub log_level: LevelFilter,
+
+    #[serde(deserialize_with = "failure_default")]
+    pub print_events: bool,
+
+    /// Keep the log file after quitting
+    #[serde(deserialize_with = "failure_default")]
+    pub persistent_logging: bool,
+
+    /// Should show render timer
+    #[serde(deserialize_with = "failure_default")]
+    pub render_timer: bool,
+
+    /// Record ref test
+    #[serde(deserialize_with = "failure_default")]
+    pub ref_test: bool,
+}
+
+impl Default for Debug {
+    fn default() -> Self {
+        Self {
+            log_level: default_log_level(),
+            print_events: Default::default(),
+            persistent_logging: Default::default(),
+            render_timer: Default::default(),
+            ref_test: Default::default(),
+        }
+    }
+}
+
+fn default_log_level() -> LevelFilter {
+    LevelFilter::Warn
+}
+
+fn deserialize_log_level<'a, D>(deserializer: D) -> Result<LevelFilter, D::Error>
+where
+    D: Deserializer<'a>,
+{
+    Ok(match failure_default::<D, String>(deserializer)?.to_lowercase().as_str() {
+        "off" | "none" => LevelFilter::Off,
+        "error" => LevelFilter::Error,
+        "warn" => LevelFilter::Warn,
+        "info" => LevelFilter::Info,
+        "debug" => LevelFilter::Debug,
+        "trace" => LevelFilter::Trace,
+        level => {
+            error!("Problem with config: invalid log level {}; using level Warn", level);
+            default_log_level()
+        },
+    })
+}