First version

...that actually does something _remotely_ useful. :)

Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "changelog-rs"
+version = "0.1.0"
+authors = ["Per Lundberg <[email protected]>"]
+
+[dependencies]

src/main.rs

@@ -0,0 +1,45 @@
+use std::env;
+use std::process::Command;
+use std::process::exit;
+
+pub fn get_commits(dir: &str, from_revision: &str, to_revision: &str) {
+    let range = format!("{}..{}", from_revision, to_revision);
+
+    let output = Command::new("git")
+            .arg("log")
+            .arg("--oneline")
+            .arg(&range)
+            .current_dir(dir)
+            .output().unwrap_or_else(|e| panic!("Failed to run 'git log' with error: {}", e));
+
+    let stdout_output = String::from_utf8_lossy(&output.stdout);
+    let lines = stdout_output
+            .split('\n')
+            .collect::<Vec<_>>();
+    let mut lines_iterator = lines.iter();
+
+    print!("## {}\n\n", to_revision);
+
+    loop {
+        match lines_iterator.next() {
+            Some(line) => {
+                if line.is_empty() { return; }
+                println!("* {}", line)
+            },
+            None => break
+        }
+    }
+}
+
+fn main() {
+    let args: Vec<_> = env::args().collect();
+
+    if args.len() == 4 {
+        get_commits(&args[1], &args[2], &args[3]);
+    }
+    else {
+        println!("Usage: {} <path> <from_revision> <to_revision>\n", args[0]);
+        println!("The path must be a clone of valid git repository.");
+        exit(1);
+    }
+}