add support for user supplied coverage output types

src/bin/cargo-ziggy/coverage.rs

@@ -92,13 +92,18 @@ impl Cover {
  }
  };
 
+ let output_types = match &self.output_types {
+ Some(o) => o,
+ None => "html",
+ };
+
  // We generate the code coverage report
  process::Command::new("grcov")
  .args([
  ".",
  &format!("-b=./target/coverage/debug/{}", self.target),
  &format!("-s={source_or_workspace_root}"),
- "-t=html",
+ &format!("-t={}", output_types),
  "--llvm",
  "--branch",
  "--ignore-not-existing",

src/bin/cargo-ziggy/main.rs

@@ -234,6 +234,10 @@ pub struct Cover {
  /// Keep coverage data files (WARNING: Do not use if source code has changed)
  #[clap(short, long, default_value_t = false)]
  keep: bool,
+
+ /// Comma separated list of output types. See grov --help to see supported output types.
+ #[clap(short = 't', long)]
+ output_types: Option<String>,
 }
 
 #[derive(Args)]