feat(module): Add a meson devenv indicator (#4389)

* feat(module): Add a meson devenv indicator

Adds a Meson Developer Environment indicator, if the MESON_DEVENV
variable is set. Inside a `meson devenv`, the prompt will include the
current Meson project name

This also contains a new Truncate utility function, which may be adapted for other modules in the future

* docs: Add Meson to presets

1 files changed, 30 insertions, 0 deletions

diff --git a/src/configs/meson.rs b/src/configs/meson.rs
new file mode 100644
index 000000000..0325c3f56
--- /dev/null
+++ b/src/configs/meson.rs
@@ -0,0 +1,30 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Deserialize, Serialize)]
+#[cfg_attr(
+    feature = "config-schema",
+    derive(schemars::JsonSchema),
+    schemars(deny_unknown_fields)
+)]
+#[serde(default)]
+pub struct MesonConfig<'a> {
+    pub truncation_length: u32,
+    pub truncation_symbol: &'a str,
+    pub format: &'a str,
+    pub symbol: &'a str,
+    pub style: &'a str,
+    pub disabled: bool,
+}
+
+impl<'a> Default for MesonConfig<'a> {
+    fn default() -> Self {
+        MesonConfig {
+            truncation_length: std::u32::MAX,
+            truncation_symbol: "…",
+            format: "via [$symbol$project]($style) ",
+            symbol: "⬢ ",
+            style: "blue bold",
+            disabled: false,
+        }
+    }
+}