Add finalising commands for things like git

src/context.rs

@@ -1,7 +1,7 @@
 use std::path::{Path, PathBuf};
 
-use crate::manifest::{FileDefinition, Manifest, Source, Transform, Params};
-use eyre::Result;
+use crate::manifest::{FileDefinition, Manifest, Params, Source, Transform};
+use eyre::{Result, ensure};
 use tracing::instrument;
 
 #[derive(Debug)]
@@ -17,7 +17,9 @@ impl Context {
         let params = Params::load_user()?.merge(params);
         Ok(Context {
             manifest: load_manifest(&source)?,
-            root: source.parent().ok_or_else(|| eyre::eyre!("Expect manifest to have a parent"))?,
+            root: source
+                .parent()
+                .ok_or_else(|| eyre::eyre!("Expect manifest to have a parent"))?,
             params,
         })
     }
@@ -30,12 +32,25 @@ impl Context {
             self.generate_file(&dest, path, def)?;
         }
 
+        for command in &self.manifest.commands {
+            let success = std::process::Command::new(&command.command)
+                .args(&command.args)
+                .current_dir(&dest)
+                .status()?
+                .success();
+            ensure!(success, "Command {:?} failed", command.command);
+        }
+
         Ok(())
     }
 
     #[instrument]
     fn generate_file(&self, dest: &Path, path: &PathBuf, def: &FileDefinition) -> Result<()> {
-        std::fs::create_dir_all(dest.join(path).parent().expect("`dest` should be an absolute path with a parent"))?;
+        std::fs::create_dir_all(
+            dest.join(path)
+                .parent()
+                .expect("`dest` should be an absolute path with a parent"),
+        )?;
         let mut input = self
             .root
             .join(
@@ -67,13 +82,8 @@ fn load_manifest(src: &Source) -> Result<Manifest> {
     Ok(toml::from_str(std::str::from_utf8(&src.load()?)?)?)
 }
 
-
 #[instrument(skip(input))]
-fn run_template(
-    args: &Params,
-    params: &Params,
-    input: Vec<u8>,
-) -> Result<Vec<u8>> {
+fn run_template(args: &Params, params: &Params, input: Vec<u8>) -> Result<Vec<u8>> {
     let engine = upon::Engine::new();
     let context = args.clone().merge(params.clone());
     Ok(engine

src/manifest.rs

@@ -3,10 +3,18 @@ use serde::{Deserialize, Serialize};
 use std::{collections::HashMap, convert::Infallible, path::PathBuf, str::FromStr};
 use tracing::instrument;
 
-#[derive(Debug, Clone, PartialEq, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Deserialize, Default)]
+#[serde(default)]
 pub struct Manifest {
     pub parameters: HashMap<String, ParameterDefinition>,
     pub files: HashMap<PathBuf, FileDefinition>,
+    pub commands: Vec<Command>
+}
+
+#[derive(Debug, Clone, PartialEq, Deserialize)]
+pub struct Command {
+    pub command: String,
+    pub args: Vec<String>
 }
 
 #[derive(Debug, Clone, PartialEq, Deserialize)]