Extract reconcile (#85)

sync-server/src/cli/args.rs

@@ -0,0 +1,26 @@
+use std::ffi::OsString;
+
+use clap::Parser;
+use clap_verbosity_flag::{InfoLevel, Verbosity};
+
+use crate::cli::color_when::ColorWhen;
+
+/// Server for backing the `VaultLink` plugin
+#[derive(Parser, Debug)]
+#[command(version, about, long_about = None)]
+pub struct Args {
+    #[arg(index = 1)]
+    pub config_path: Option<OsString>,
+
+    #[command(flatten)]
+    pub verbose: Verbosity<InfoLevel>,
+
+    #[arg(
+            long,
+            value_name = "WHEN",
+            default_value_t = ColorWhen::Auto,
+            default_missing_value = "always",
+            value_enum
+        )]
+    pub color: ColorWhen,
+}

sync-server/src/cli/color_when.rs

@@ -0,0 +1,31 @@
+use std::io::IsTerminal;
+
+use clap::ValueEnum;
+
+#[derive(ValueEnum, Copy, Clone, Debug, PartialEq, Eq)]
+pub enum ColorWhen {
+    Always,
+    Auto,
+    Never,
+}
+
+impl ColorWhen {
+    pub fn use_colors(self) -> bool {
+        match self {
+            ColorWhen::Always => true,
+            ColorWhen::Auto => {
+                std::env::var_os("NO_COLOR").is_none() && std::io::stderr().is_terminal()
+            }
+            ColorWhen::Never => false,
+        }
+    }
+}
+
+impl std::fmt::Display for ColorWhen {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        self.to_possible_value()
+            .expect("no values are skipped")
+            .get_name()
+            .fmt(f)
+    }
+}