Use json output format in cargo if set in scarb_ui

commit-id:fd15f5ab

scarb/src/compiler/plugin/proc_macro/compilation.rs

@@ -6,6 +6,8 @@ use crate::process::exec_piping;
 use anyhow::Result;
 use camino::Utf8PathBuf;
 use libloading::library_filename;
+use scarb_ui::OutputFormat;
+use std::fmt::Display;
 use std::process::Command;
 use tracing::trace_span;
 
@@ -62,6 +64,7 @@ fn run_cargo(action: CargoAction, package: &Package, ws: &Workspace<'_>) -> Resu
     let cmd = CargoCommand {
         action,
         current_dir: package.root().to_path_buf(),
+        output_format: ws.config().ui().output_format(),
         target_dir: package
             .target_path(ws.config())
             .path_unchecked()
@@ -83,9 +86,33 @@ enum CargoAction {
 struct CargoCommand {
     current_dir: Utf8PathBuf,
     target_dir: Utf8PathBuf,
+    output_format: OutputFormat,
     action: CargoAction,
 }
 
+enum CargoOutputFormat {
+    Human,
+    Json,
+}
+
+impl Display for CargoOutputFormat {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            CargoOutputFormat::Human => write!(f, "human"),
+            CargoOutputFormat::Json => write!(f, "json"),
+        }
+    }
+}
+
+impl From<OutputFormat> for CargoOutputFormat {
+    fn from(format: OutputFormat) -> Self {
+        match format {
+            OutputFormat::Text => CargoOutputFormat::Human,
+            OutputFormat::Json => CargoOutputFormat::Json,
+        }
+    }
+}
+
 impl From<CargoCommand> for Command {
     fn from(args: CargoCommand) -> Self {
         let mut cmd = Command::new("cargo");
@@ -99,6 +126,9 @@ impl From<CargoCommand> for Command {
             CargoAction::Fetch => (),
             _ => {
                 cmd.arg("--release");
+                cmd.arg("--message-format");
+                let output_format: CargoOutputFormat = args.output_format.into();
+                cmd.arg(output_format.to_string());
                 cmd.arg("--target-dir");
                 cmd.arg(args.target_dir);
             }

scarb/tests/build_cairo_plugin.rs

@@ -149,6 +149,34 @@ fn resolve_fetched_plugins() {
     assert!(t.child("Cargo.lock").exists())
 }
 
+#[test]
+fn can_use_json_output() {
+    let t = TempDir::new().unwrap();
+    simple_project(&t);
+    let output = Scarb::quick_snapbox()
+        .arg("--json")
+        .arg("check")
+        .current_dir(&t)
+        .output()
+        .unwrap();
+    assert!(output.status.success());
+    let stdout = String::from_utf8_lossy(&output.stdout).to_string();
+    let lines = stdout.lines().map(ToString::to_string).collect::<Vec<_>>();
+    let (first, lines) = lines.split_first().unwrap();
+    assert_matches(
+        r#"{"status":"checking","message":"hello v1.0.0 ([..]Scarb.toml)"}"#,
+        first,
+    );
+    let (last, lines) = lines.split_last().unwrap();
+    assert_matches(
+        r#"{"status":"finished","message":"checking release target(s) in [..]"}"#,
+        last,
+    );
+    // Line from Cargo.
+    let (last, _lines) = lines.split_last().unwrap();
+    assert_matches(r#"{"reason":"build-finished","success":true}"#, last);
+}
+
 #[test]
 fn compile_cairo_plugin_with_lib_target() {
     let t = TempDir::new().unwrap();