version: Add support for git-testament derived version info

Signed-off-by: Daniel Silverstone <dsilvers@digital-scurf.org>

1 files changed, 36 insertions, 1 deletions

diff --git a/src/bin/subplot.rs b/src/bin/subplot.rs
index ebbdec8..4a650ee 100644
--- a/src/bin/subplot.rs
+++ b/src/bin/subplot.rs
@@ -17,6 +17,10 @@ use std::time::UNIX_EPOCH;
 
 mod cli;
 
+use git_testament::*;
+
+git_testament!(VERSION);
+
 #[derive(Debug, StructOpt)]
 struct Toplevel {
     #[structopt(flatten)]
@@ -53,6 +57,33 @@ impl Cmd {
     }
 }
 
+fn long_version() -> Result<String> {
+    use std::fmt::Write as _;
+    let mut ret = String::new();
+    writeln!(ret, "{}", render_testament!(VERSION))?;
+    writeln!(ret, "Crate version: {}", env!("CARGO_PKG_VERSION"))?;
+    if let Some(branch) = VERSION.branch_name {
+        writeln!(ret, "Built from branch: {}", branch)?;
+    } else {
+        writeln!(ret, "Branch information is missing.")?;
+    }
+    writeln!(ret, "Commit info: {}", VERSION.commit)?;
+    if VERSION.modifications.is_empty() {
+        writeln!(ret, "Working tree is clean")?;
+    } else {
+        use GitModification::*;
+        for fmod in VERSION.modifications {
+            match fmod {
+                Added(f) => writeln!(ret, "Added: {}", String::from_utf8_lossy(f))?,
+                Removed(f) => writeln!(ret, "Removed: {}", String::from_utf8_lossy(f))?,
+                Modified(f) => writeln!(ret, "Modified: {}", String::from_utf8_lossy(f))?,
+                Untracked(f) => writeln!(ret, "Untracked: {}", String::from_utf8_lossy(f))?,
+            }
+        }
+    }
+    Ok(ret)
+}
+
 #[derive(Debug, StructOpt)]
 /// Extract embedded files from a subplot document
 ///
@@ -337,7 +368,11 @@ impl Codegen {
 }
 
 fn main() {
-    let args = Toplevel::from_args();
+    let argparser = Toplevel::clap();
+    let version = long_version().unwrap();
+    let argparser = argparser.long_version(version.as_str());
+    let args = argparser.get_matches();
+    let args = Toplevel::from_clap(&args);
     args.resources.handle();
     match args.run() {
         Ok(_) => {}