add --version flag

.gitignore

@@ -1,2 +1,3 @@
 /target
-/html
+/html
+/src/version.rs

build.sh

@@ -1,5 +1,12 @@
 #!/bin/sh
 
+rm webTemplate-*
+
+version="$(cat Cargo.toml | grep '^version' | sed -e 's/^.*"\([^"]*\)".*$/\1/')"
+commit="$(git show --oneline -s | sed -e 's/ .*$//')"
+dirty="$(test "$(git diff --shortstat 2> /dev/null | tail -n1)" == "" || echo -n "_drity" )"
+echo "pub const VERSION: &'static str = \"${version} (${commit}${dirty})\";" >src/version.rs
+
 cross build --target aarch64-unknown-linux-gnu --release
 cargo build --release
 

src/main.rs

@@ -4,6 +4,9 @@ use minijinja::Environment;
 mod render;
 use render::{Renderer, IndexItem, build_jinja_env, Template};
 
+mod version;
+use version::VERSION;
+
 const SRC_PATH: &'static str = "./src/";
 const OUT_PATH: &'static str = "./html/";
 
@@ -97,6 +100,10 @@ fn render_index(
     }
 }
 
+fn version() {
+    println!("version: {}", VERSION);
+}
+
 fn usage() {
     println!("webtemplate [--output=<dir>] [--src=<dir>]");
 }
@@ -148,6 +155,10 @@ fn main() {
                 "help" => {
                     usage();
                 }
+                "version" => {
+                    version();
+                    return;
+                }
                 _ => {
                     println!("ERROR: invalid option {}", option);
                     usage();

src/render.rs

@@ -98,14 +98,26 @@ impl Renderer {
                 let split = indexer::split_params(content);
                 match parse_md(split.md, jinja_env) {
                     Some(md) => {
-                        let template = jinja_env.get_template(&page.template).unwrap();
-                        let html = template.render(context! {
+                        let template = match jinja_env.get_template(&page.template) {
+                            Ok(templ) => templ,
+                            Err(_) => {
+                                println!("ERROR: jinja: failed to get template");
+                                return None;
+                            },
+                        };
+                        let html = match template.render(context! {
                             index => index.to_minijinja(),
                             is_error_not_found => false,
                             url => page.get_url(),
                             body => md,
                             params => Renderer::convert_yaml(split.yaml)
-                        }).unwrap();
+                        }) {
+                            Ok(out) => out,
+                            Err(_) => {
+                                println!("ERROR: jinja: failed to render template");
+                                return None;
+                            },
+                        };
 
                         Some(html)
                     },