Add basic logger

src/logger.rs

@@ -0,0 +1,35 @@
+#[derive(Debug, Default)]
+pub struct Logger {
+  pub quiet: bool,
+}
+
+impl Logger {
+  pub fn info(&self, message: impl ToString) {
+    if self.quiet {
+      return;
+    }
+    println!("{}", message.to_string());
+  }
+}
+
+#[macro_export]
+macro_rules! log {
+  ($logger:expr, $level:ident, $($args:tt)*) => {
+    $logger.$level(format!($($args)*));
+  };
+  ($logger:expr, $($args:tt)*) => {
+    log!($logger, info, $($args)*);
+  }
+}
+
+#[cfg(test)]
+mod test {
+  use crate::logger::Logger;
+
+  #[test]
+  #[ignore]
+  fn syntax_test() {
+    let logger = Logger { quiet: false };
+    log!(logger, "Foo {}", "bar");
+  }
+}

src/main.rs

@@ -2,9 +2,11 @@ mod action;
 mod file;
 mod os_string_builder;
 mod server;
+mod logger;
 
 use crate::action::{Action, FileAction, ServerActions};
 use crate::file::{FileMatcher, FileNameInfo};
+use crate::logger::Logger;
 use crate::os_string_builder::ReplaceWithOsStr;
 use clap::{Parser, Subcommand, ValueEnum};
 use lazy_regex::{lazy_regex, Lazy, Regex};
@@ -109,6 +111,8 @@ enum OldVersionPolicy {
 
 fn main() -> Result<(), String> {
   let args = Args::parse();
+  
+  let logger = Logger { quiet: false };
 
   let mut configured_servers = LazyCell::new(parse_server_configuration_from_env);
   let servers = args