add cli override support

src/drivers.rs

@@ -18,7 +18,7 @@ fn find_version<'a, V: Iterator<Item=&'a str>>(requirement: &str, version_iter:
     // Filter for matching versions
     let mut filtered: Vec<_> = version_iter.filter(|v| {
         // Remove leading `v` for git tags
-        let ver_str = match v.strip_prefix("s") {
+        let ver_str = match v.strip_prefix('s') {
             Some(v) => v,
             None => v,
         };

src/helpers.rs

@@ -57,7 +57,7 @@ pub fn extract<S: AsRef<Path>, P: AsRef<Path>>(source: S, fmt: PkgFmt, path: P)
 
             tar.unpack(path)?;
         },
-        PkgFmt::Tgz => {
+        PkgFmt::Tgz | PkgFmt::TarGz => {
             // Extract to install dir
             debug!("Decompressing from tgz archive '{:?}' to `{:?}`", source.as_ref(), path.as_ref());
 
@@ -129,7 +129,7 @@ pub fn get_install_path<P: AsRef<Path>>(install_path: Option<P>) -> Option<PathB
     // Local executable dir if no cargo is found
     if let Some(d) = dirs::executable_dir() {
         debug!("Fallback to {}", d.display());
-        return Some(d.into());
+        return Some(d);
     }
 
     None

src/lib.rs

@@ -14,13 +14,13 @@ pub use drivers::*;
 
 
 /// Compiled target triple, used as default for binary fetching
-pub const TARGET: &'static str = env!("TARGET");
+pub const TARGET: &str = env!("TARGET");
 
 /// Default package path template (may be overridden in package Cargo.toml)
-pub const DEFAULT_PKG_URL: &'static str = "{ repo }/releases/download/v{ version }/{ name }-{ target }-v{ version }.{ format }";
+pub const DEFAULT_PKG_URL: &str = "{ repo }/releases/download/v{ version }/{ name }-{ target }-v{ version }.{ format }";
 
 /// Default binary name template (may be overridden in package Cargo.toml)
-pub const DEFAULT_BIN_PATH: &'static str = "{ name }-{ target }-v{ version }/{ bin }{ format }";
+pub const DEFAULT_BIN_PATH: &str = "{ name }-{ target }-v{ version }/{ bin }{ format }";
 
 
 /// Binary format enumeration
@@ -33,6 +33,9 @@ pub enum PkgFmt {
     Tar,
     /// Download format is TGZ (TAR + GZip)
     Tgz,
+    /// Download format is TAR.GZ (TAR + GZip)
+    #[strum(serialize = "tar.gz")]
+    TarGz,
     /// Download format is TAR + XZ
     Txz,
     /// Download format is Zip
@@ -159,7 +162,7 @@ impl Context {
         let mut tt = TinyTemplate::new();
 
         // Add template to instance
-        tt.add_template("path", &template)?;
+        tt.add_template("path", template)?;
 
         // Render output
         let rendered = tt.render("path", self)?;

src/main.rs

@@ -56,6 +56,18 @@ struct Options {
     /// Utility log level
     #[structopt(long, default_value = "info")]
     log_level: LevelFilter,
+
+    /// Override Cargo.toml package manifest pkg-url.
+    #[structopt(long)]
+    pkg_url: Option<String>,
+
+    /// Override Cargo.toml package manifest pkg-fmt.
+    #[structopt(long)]
+    pkg_fmt: Option<PkgFmt>,
+
+    /// Override Cargo.toml package manifest bin-dir.
+    #[structopt(long)]
+    bin_dir: Option<String>,
 }
 
 
@@ -72,6 +84,11 @@ async fn main() -> Result<(), anyhow::Error> {
 
     // Load options
     let opts = Options::from_iter(args.iter());
+    let cli_overrides = PkgOverride {
+        pkg_url: opts.pkg_url.clone(),
+        pkg_fmt: opts.pkg_fmt,
+        bin_dir: opts.bin_dir.clone(),
+    };
 
     // Setup logging
     let mut log_config = ConfigBuilder::new();
@@ -98,7 +115,7 @@ async fn main() -> Result<(), anyhow::Error> {
     let package = manifest.package.unwrap();
 
     let (mut meta, binaries) = (
-        package.metadata.map(|m| m.binstall ).flatten().unwrap_or(PkgMeta::default()),
+        package.metadata.map(|m| m.binstall ).flatten().unwrap_or_default(),
         manifest.bin,
     );
 
@@ -106,8 +123,7 @@ async fn main() -> Result<(), anyhow::Error> {
     if let Some(o) = meta.overrides.remove(&opts.target) {
         meta.merge(&o);
     }
-
-    debug!("Found metadata: {:?}", meta);
+    meta.merge(&cli_overrides);
 
     // Generate context for URL interpolation
     let ctx = Context { 
@@ -175,7 +191,7 @@ async fn main() -> Result<(), anyhow::Error> {
         let _ = temp_dir.into_path();
     }
 
-    if binaries.len() == 0 {
+    if binaries.is_empty() {
         error!("No binaries specified (or inferred from file system)");
         return Err(anyhow::anyhow!("No binaries specified (or inferred from file system)"));
     }