Mock .git for packaging purposes

Author: tilpner

Cargo.toml

@@ -5,6 +5,7 @@ license = "Apache-2.0"
 name = "ilc"
 repository = "https://github.com/tilpner/ilc"
 version = "0.3.0"
+build = "build.rs"
 exclude = [".cargo/**"]
 
 [[bin]]

build.rs

@@ -0,0 +1,10 @@
+use std::fs::{self, File};
+use std::path::Path;
+
+fn main() {
+    let path = Path::new(".git").join("refs").join("heads").join("master");
+    if !path.exists() {
+        let _ = fs::create_dir_all(path.parent().unwrap());
+        let _ = File::create(&path);
+    }
+}

cli/src/lib.rs

@@ -35,7 +35,7 @@ mod stats;
 
 pub struct Cli {
     pub version: String,
-    pub master_hash: String,
+    pub master_hash: Option<String>,
 }
 
 pub fn main(cli: Cli) {
@@ -44,7 +44,10 @@ pub fn main(cli: Cli) {
         info!("Compiled with FUSEs")
     }
 
-    let version = format!("{} ({})", cli.version, cli.master_hash);
+    let version = match cli.master_hash {
+        Some(ref h) => format!("{} ({})", cli.version, h),
+        None => cli.version.clone(),
+    };
     let args = App::new("ilc")
                    .version(&version[..])
                    .setting(AppSettings::GlobalVersion)

cli/src/stats.rs

@@ -13,7 +13,7 @@ use error;
 
 struct StatFormat {
     version: String,
-    master_hash: String,
+    master_hash: Option<String>,
     time: String,
     stats: Stats,
 }
@@ -28,7 +28,9 @@ impl Serialize for StatFormat {
                 where S: Serializer
             {
                 try!(s.serialize_struct_elt("version", &self.0.version));
-                try!(s.serialize_struct_elt("master_hash", &self.0.master_hash));
+                if let &Some(ref h) = &self.0.master_hash {
+                    try!(s.serialize_struct_elt("master_hash", h));
+                }
                 try!(s.serialize_struct_elt("time", &self.0.time));
                 try!(s.serialize_struct_elt("stats", &self.0.stats));
                 Ok(None)

src/main.rs

@@ -2,11 +2,15 @@ extern crate ilc_cli;
 
 use ilc_cli::Cli;
 
-static MASTER: &'static str = include_str!("../.git/refs/heads/master");
+static MASTER_HASH: &'static str = include_str!("../.git/refs/heads/master");
 
 fn main() {
     ilc_cli::main(Cli {
         version: env!("CARGO_PKG_VERSION").into(),
-        master_hash: MASTER.trim_right().into(),
+        master_hash: if MASTER_HASH.is_empty() {
+            None
+        } else {
+            Some(MASTER_HASH.trim_right().to_owned())
+        },
     });
 }