Improve error and message handling when Commands fail

xbuild/src/cargo/mod.rs

@@ -12,7 +12,7 @@ pub use artifact::{Artifact, CrateType};
 
 use self::config::LocalizedConfig;
 use self::manifest::Manifest;
-use crate::{CompileTarget, Opt};
+use crate::{task, CompileTarget, Opt};
 
 pub struct Cargo {
     package: String,
@@ -469,9 +469,7 @@ impl CargoBuild {
         self.cc_triple_env("CFLAGS", &self.c_flags.clone());
         // These strings already end with a space if they're non-empty:
         self.cc_triple_env("CXXFLAGS", &format!("{}{}", self.c_flags, self.cxx_flags));
-        if !self.cmd.status()?.success() {
-            std::process::exit(1);
-        }
+        task::run(&mut self.cmd)?;
         Ok(())
     }
 }

xbuild/src/download.rs

@@ -1,4 +1,4 @@
-use crate::{BuildEnv, Platform};
+use crate::{task, BuildEnv, Platform};
 use anyhow::Result;
 use indicatif::{ProgressBar, ProgressDrawTarget, ProgressStyle};
 use mvn::Download;
@@ -115,13 +115,7 @@ impl<'a> DownloadManager<'a> {
     }
 
     fn rustup_target(&self, target: &str) -> Result<()> {
-        let status = Command::new("rustup")
-            .arg("target")
-            .arg("add")
-            .arg(target)
-            .status()?;
-        anyhow::ensure!(status.success(), "failure running rustup target add");
-        Ok(())
+        task::run(Command::new("rustup").arg("target").arg("add").arg(target))
     }
 
     pub fn prefetch(&self) -> Result<()> {

xbuild/src/gradle/mod.rs

@@ -157,14 +157,15 @@ pub fn build(env: &BuildEnv, out: &Path) -> Result<()> {
 
     let opt = env.target().opt();
     let format = env.target().format();
-    let mut cmd = Command::new("gradle");
-    cmd.current_dir(&gradle);
-    cmd.arg(match format {
-        Format::Aab => "bundle",
-        Format::Apk => "assemble",
-        _ => unreachable!(),
-    });
-    task::run(cmd, true)?;
+    task::run(
+        Command::new("gradle")
+            .current_dir(&gradle)
+            .arg(match format {
+                Format::Aab => "bundle",
+                Format::Apk => "assemble",
+                _ => unreachable!(),
+            }),
+    )?;
     let output = gradle
         .join("app")
         .join("build")

xbuild/src/task.rs

@@ -1,4 +1,4 @@
-use anyhow::Result;
+use anyhow::{Context, Result};
 use console::{style, Term};
 use std::process::Command;
 use std::time::Instant;
@@ -66,37 +66,20 @@ impl TaskRunner {
     }
 }
 
-pub fn run(mut command: Command, verbose: bool) -> Result<()> {
-    fn print_error(command: &Command, status: Option<i32>) {
-        let program = command.get_program().to_str().unwrap();
-        let args = command
-            .get_args()
-            .map(|arg| arg.to_str().unwrap())
-            .collect::<Vec<_>>()
-            .join(" ");
+pub fn run(command: &mut Command) -> Result<()> {
+    fn format_error(command: &Command, status: Option<i32>) -> String {
         let status = if let Some(code) = status {
             format!(" exited with {}", code)
         } else {
             Default::default()
         };
-        println!("{} {} {} {}", style("[ERROR]").red(), program, args, status);
+        format!("{} `{:?}`{}", style("[ERROR]").red(), command, status)
     }
-    if !verbose {
-        let output = command.output()?;
-        if !output.status.success() {
-            print_error(&command, output.status.code());
-            let stdout = std::str::from_utf8(&output.stdout)?;
-            print!("{}", stdout);
-            let stderr = std::str::from_utf8(&output.stderr)?;
-            print!("{}", stderr);
-            std::process::exit(1);
-        }
-    } else {
-        let status = command.status()?;
-        if !status.success() {
-            print_error(&command, status.code());
-            std::process::exit(1);
-        }
+    let status = command
+        .status()
+        .with_context(|| format_error(command, None))?;
+    if !status.success() {
+        anyhow::bail!("{}", format_error(command, status.code()));
     }
     Ok(())
 }